such as ACPI. This file will read either "removable" or
"fixed" if the information is available, and "unknown"
otherwise.
+
+What: /sys/bus/usb/devices/.../ltm_capable
+Date: July 2012
+Contact: Sarah Sharp <sarah.a.sharp@linux.intel.com>
+Description:
+ USB 3.0 devices may optionally support Latency Tolerance
+ Messaging (LTM). They indicate their support by setting a bit
+ in the bmAttributes field of their SuperSpeed BOS descriptors.
+ If that bit is set for the device, ltm_capable will read "yes".
+ If the device doesn't support LTM, the file will read "no".
+ The file will be present for all speeds of USB devices, and will
+ always read "no" for USB 1.1 and USB 2.0 devices.
--- /dev/null
+* Freescale i.MX ci13xxx usb controllers
+
+Required properties:
+- compatible: Should be "fsl,imx27-usb"
+- reg: Should contain registers location and length
+- interrupts: Should contain controller interrupt
+
+Optional properties:
+- fsl,usbphy: phandler of usb phy that connects to the only one port
+- vbus-supply: regulator for vbus
+
+Examples:
+usb@02184000 { /* USB OTG */
+ compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
+ reg = <0x02184000 0x200>;
+ interrupts = <0 43 0x04>;
+ fsl,usbphy = <&usbphy1>;
+};
--- /dev/null
+* Freescale MXS USB Phy Device
+
+Required properties:
+- compatible: Should be "fsl,imx23-usbphy"
+- reg: Should contain registers location and length
+- interrupts: Should contain phy interrupt
+
+Example:
+usbphy1: usbphy@020c9000 {
+ compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";
+ reg = <0x020c9000 0x1000>;
+ interrupts = <0 44 0x04>;
+};
--- /dev/null
+* Overview
+
+ Mass Storage Gadget (or MSG) acts as a USB Mass Storage device,
+ appearing to the host as a disk or a CD-ROM drive. It supports
+ multiple logical units (LUNs). Backing storage for each LUN is
+ provided by a regular file or a block device, access can be limited
+ to read-only, and gadget can indicate that it is removable and/or
+ CD-ROM (the latter implies read-only access).
+
+ Its requirements are modest; only a bulk-in and a bulk-out endpoint
+ are needed. The memory requirement amounts to two 16K buffers.
+ Support is included for full-speed, high-speed and SuperSpeed
+ operation.
+
+ Note that the driver is slightly non-portable in that it assumes
+ a single memory/DMA buffer will be useable for bulk-in and bulk-out
+ endpoints. With most device controllers this is not an issue, but
+ there may be some with hardware restrictions that prevent a buffer
+ from being used by more than one endpoint.
+
+ This document describes how to use the gadget from user space, its
+ relation to mass storage function (or MSF) and different gadgets
+ using it, and how it differs from File Storage Gadget (or FSG). It
+ will talk only briefly about how to use MSF within composite
+ gadgets.
+
+* Module parameters
+
+ The mass storage gadget accepts the following mass storage specific
+ module parameters:
+
+ - file=filename[,filename...]
+
+ This parameter lists paths to files or block devices used for
+ backing storage for each logical unit. There may be at most
+ FSG_MAX_LUNS (8) LUNs set. If more files are specified, they will
+ be silently ignored. See also “luns” parameter.
+
+ *BEWARE* that if a file is used as a backing storage, it may not
+ be modified by any other process. This is because the host
+ assumes the data does not change without its knowledge. It may be
+ read, but (if the logical unit is writable) due to buffering on
+ the host side, the contents are not well defined.
+
+ The size of the logical unit will be rounded down to a full
+ logical block. The logical block size is 2048 bytes for LUNs
+ simulating CD-ROM, block size of the device if the backing file is
+ a block device, or 512 bytes otherwise.
+
+ - removable=b[,b...]
+
+ This parameter specifies whether each logical unit should be
+ removable. “b” here is either “y”, “Y” or “1” for true or “n”,
+ “N” or “0” for false.
+
+ If this option is set for a logical unit, gadget will accept an
+ “eject” SCSI request (Start/Stop Unit). When it is sent, the
+ backing file will be closed to simulate ejection and the logical
+ unit will not be mountable by the host until a new backing file is
+ specified by userspace on the device (see “sysfs entries”
+ section).
+
+ If a logical unit is not removable (the default), a backing file
+ must be specified for it with the “file” parameter as the module
+ is loaded. The same applies if the module is built in, no
+ exceptions.
+
+ The default value of the flag is false, *HOWEVER* it used to be
+ true. This has been changed to better match File Storage Gadget
+ and because it seems like a saner default after all. Thus to
+ maintain compatibility with older kernels, it's best to specify
+ the default values. Also, if one relied on old default, explicit
+ “n” needs to be specified now.
+
+ Note that “removable” means the logical unit's media can be
+ ejected or removed (as is true for a CD-ROM drive or a card
+ reader). It does *not* mean that the entire gadget can be
+ unplugged from the host; the proper term for that is
+ “hot-unpluggable”.
+
+ - cdrom=b[,b...]
+
+ This parameter specifies whether each logical unit should simulate
+ CD-ROM. The default is false.
+
+ - ro=b[,b...]
+
+ This parameter specifies whether each logical unit should be
+ reported as read only. This will prevent host from modifying the
+ backing files.
+
+ Note that if this flag for given logical unit is false but the
+ backing file could not be opened in read/write mode, the gadget
+ will fall back to read only mode anyway.
+
+ The default value for non-CD-ROM logical units is false; for
+ logical units simulating CD-ROM it is forced to true.
+
+ - nofua=b[,b...]
+
+ This parameter specifies whether FUA flag should be ignored in SCSI
+ Write10 and Write12 commands sent to given logical units.
+
+ MS Windows mounts removable storage in “Removal optimised mode” by
+ default. All the writes to the media are synchronous, which is
+ achieved by setting the FUA (Force Unit Access) bit in SCSI
+ Write(10,12) commands. This forces each write to wait until the
+ data has actually been written out and prevents I/O requests
+ aggregation in block layer dramatically decreasing performance.
+
+ Note that this may mean that if the device is powered from USB and
+ the user unplugs the device without unmounting it first (which at
+ least some Windows users do), the data may be lost.
+
+ The default value is false.
+
+ - luns=N
+
+ This parameter specifies number of logical units the gadget will
+ have. It is limited by FSG_MAX_LUNS (8) and higher value will be
+ capped.
+
+ If this parameter is provided, and the number of files specified
+ in “file” argument is greater then the value of “luns”, all excess
+ files will be ignored.
+
+ If this parameter is not present, the number of logical units will
+ be deduced from the number of files specified in the “file”
+ parameter. If the file parameter is missing as well, one is
+ assumed.
+
+ - stall=b
+
+ Specifies whether the gadget is allowed to halt bulk endpoints.
+ The default is determined according to the type of USB device
+ controller, but usually true.
+
+ In addition to the above, the gadget also accepts the following
+ parameters defined by the composite framework (they are common to
+ all composite gadgets so just a quick listing):
+
+ - idVendor -- USB Vendor ID (16 bit integer)
+ - idProduct -- USB Product ID (16 bit integer)
+ - bcdDevice -- USB Device version (BCD) (16 bit integer)
+ - iManufacturer -- USB Manufacturer string (string)
+ - iProduct -- USB Product string (string)
+ - iSerialNumber -- SerialNumber string (sting)
+
+* sysfs entries
+
+ For each logical unit, the gadget creates a directory in the sysfs
+ hierarchy. Inside of it the following three files are created:
+
+ - file
+
+ When read it returns the path to the backing file for the given
+ logical unit. If there is no backing file (possible only if the
+ logical unit is removable), the content is empty.
+
+ When written into, it changes the backing file for given logical
+ unit. This change can be performed even if given logical unit is
+ not specified as removable (but that may look strange to the
+ host). It may fail, however, if host disallowed medium removal
+ with the Prevent-Allow Medium Removal SCSI command.
+
+ - ro
+
+ Reflects the state of ro flag for the given logical unit. It can
+ be read any time, and written to when there is no backing file
+ open for given logical unit.
+
+ - nofua
+
+ Reflects the state of nofua flag for given logical unit. It can
+ be read and written.
+
+ Other then those, as usual, the values of module parameters can be
+ read from /sys/module/g_mass_storage/parameters/* files.
+
+* Other gadgets using mass storage function
+
+ The Mass Storage Gadget uses the Mass Storage Function to handle
+ mass storage protocol. As a composite function, MSF may be used by
+ other gadgets as well (eg. g_multi and acm_ms).
+
+ All of the information in previous sections are valid for other
+ gadgets using MSF, except that support for mass storage related
+ module parameters may be missing, or the parameters may have
+ a prefix. To figure out whether any of this is true one needs to
+ consult the gadget's documentation or its source code.
+
+ For examples of how to include mass storage function in gadgets, one
+ may take a look at mass_storage.c, acm_ms.c and multi.c (sorted by
+ complexity).
+
+* Relation to file storage gadget
+
+ The Mass Storage Function and thus the Mass Storage Gadget has been
+ based on the File Storage Gadget. The difference between the two is
+ that MSG is a composite gadget (ie. uses the composite framework)
+ while file storage gadget is a traditional gadget. From userspace
+ point of view this distinction does not really matter, but from
+ kernel hacker's point of view, this means that (i) MSG does not
+ duplicate code needed for handling basic USB protocol commands and
+ (ii) MSF can be used in any other composite gadget.
+
+ Because of that, File Storage Gadget has been deprecated and
+ scheduled to be removed in Linux 3.8. All users need to transition
+ to the Mass Storage Gadget by that time. The two gadgets behave
+ mostly the same from the outside except:
+
+ 1. In FSG the “removable” and “cdrom” module parameters set the flag
+ for all logical units whereas in MSG they accept a list of y/n
+ values for each logical unit. If one uses only a single logical
+ unit this does not matter, but if there are more, the y/n value
+ needs to be repeated for each logical unit.
+
+ 2. FSG's “serial”, “vendor”, “product” and “release” module
+ parameters are handled in MSG by the composite layer's parameters
+ named respectively: “iSerialnumber”, “idVendor”, “idProduct” and
+ “bcdDevice”.
+
+ 3. MSG does not support FSG's test mode, thus “transport”,
+ “protocol” and “buflen” FSG's module parameters are not
+ supported. MSG always uses SCSI protocol with bulk only
+ transport mode and 16 KiB buffers.
CLK(NULL, "usbhost_48m_fck", &usbhost_48m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
CLK(NULL, "usbhost_ick", &usbhost_ick, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
CLK("usbhs_omap", "usbhost_ick", &usbhost_ick, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
- CLK("usbhs_omap", "utmi_p1_gfclk", &dummy_ck, CK_3XXX),
- CLK("usbhs_omap", "utmi_p2_gfclk", &dummy_ck, CK_3XXX),
- CLK("usbhs_omap", "xclk60mhsp1_ck", &dummy_ck, CK_3XXX),
- CLK("usbhs_omap", "xclk60mhsp2_ck", &dummy_ck, CK_3XXX),
- CLK("usbhs_omap", "usb_host_hs_utmi_p1_clk", &dummy_ck, CK_3XXX),
- CLK("usbhs_omap", "usb_host_hs_utmi_p2_clk", &dummy_ck, CK_3XXX),
+ CLK(NULL, "utmi_p1_gfclk", &dummy_ck, CK_3XXX),
+ CLK(NULL, "utmi_p2_gfclk", &dummy_ck, CK_3XXX),
+ CLK(NULL, "xclk60mhsp1_ck", &dummy_ck, CK_3XXX),
+ CLK(NULL, "xclk60mhsp2_ck", &dummy_ck, CK_3XXX),
+ CLK(NULL, "usb_host_hs_utmi_p1_clk", &dummy_ck, CK_3XXX),
+ CLK(NULL, "usb_host_hs_utmi_p2_clk", &dummy_ck, CK_3XXX),
CLK("usbhs_omap", "usb_tll_hs_usb_ch0_clk", &dummy_ck, CK_3XXX),
CLK("usbhs_omap", "usb_tll_hs_usb_ch1_clk", &dummy_ck, CK_3XXX),
- CLK("usbhs_omap", "init_60m_fclk", &dummy_ck, CK_3XXX),
+ CLK(NULL, "init_60m_fclk", &dummy_ck, CK_3XXX),
CLK(NULL, "usim_fck", &usim_fck, CK_3430ES2PLUS | CK_36XX),
CLK(NULL, "gpt1_fck", &gpt1_fck, CK_3XXX),
CLK(NULL, "wkup_32k_fck", &wkup_32k_fck, CK_3XXX),
dev_err(di->dev, "%s mask and set failed\n", __func__);
usb_unregister_notifier(di->usb_phy, &di->nb);
- usb_put_transceiver(di->usb_phy);
+ usb_put_phy(di->usb_phy);
/* Delete the work queue */
destroy_workqueue(di->charger_wq);
goto free_ac;
}
- di->usb_phy = usb_get_transceiver();
- if (!di->usb_phy) {
+ di->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(di->usb_phy)) {
dev_err(di->dev, "failed to get usb transceiver\n");
ret = -EINVAL;
goto free_usb;
free_irq(irq, di);
}
put_usb_phy:
- usb_put_transceiver(di->usb_phy);
+ usb_put_phy(di->usb_phy);
free_usb:
power_supply_unregister(&di->usb_chg.psy);
free_ac:
if (!isp)
return -ENOMEM;
- isp->phy = usb_get_transceiver();
- if (!isp->phy)
+ isp->phy = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(isp->phy))
goto fail0;
isp->dev = &pdev->dev;
power_supply_unregister(&isp->psy);
fail1:
isp1704_charger_set_power(isp, 0);
- usb_put_transceiver(isp->phy);
+ usb_put_phy(isp->phy);
fail0:
kfree(isp);
usb_unregister_notifier(isp->phy, &isp->nb);
power_supply_unregister(&isp->psy);
- usb_put_transceiver(isp->phy);
+ usb_put_phy(isp->phy);
isp1704_charger_set_power(isp, 0);
kfree(isp);
}
#ifdef CONFIG_USB_OTG_UTILS
- transceiver = usb_get_transceiver();
- if (transceiver && !pdata->is_usb_online) {
- pdata->is_usb_online = otg_is_usb_online;
- }
- if (transceiver && !pdata->is_ac_online) {
- pdata->is_ac_online = otg_is_ac_online;
+ transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (!IS_ERR_OR_NULL(transceiver)) {
+ if (!pdata->is_usb_online)
+ pdata->is_usb_online = otg_is_usb_online;
+ if (!pdata->is_ac_online)
+ pdata->is_ac_online = otg_is_ac_online;
}
#endif
}
#ifdef CONFIG_USB_OTG_UTILS
- if (transceiver && pdata->use_otg_notifier) {
+ if (!IS_ERR_OR_NULL(transceiver) && pdata->use_otg_notifier) {
otg_nb.notifier_call = otg_handle_notification;
ret = usb_register_notifier(transceiver, &otg_nb);
if (ret) {
if (pdata->is_ac_online && ac_irq)
free_irq(ac_irq->start, &pda_psy_ac);
#ifdef CONFIG_USB_OTG_UTILS
- if (transceiver)
- usb_put_transceiver(transceiver);
+ if (!IS_ERR_OR_NULL(transceiver))
+ usb_put_phy(transceiver);
#endif
ac_irq_failed:
if (pdata->is_ac_online)
if (pdata->is_ac_online)
power_supply_unregister(&pda_psy_ac);
#ifdef CONFIG_USB_OTG_UTILS
- if (transceiver)
- usb_put_transceiver(transceiver);
+ if (!IS_ERR_OR_NULL(transceiver))
+ usb_put_phy(transceiver);
#endif
if (ac_draw) {
regulator_put(ac_draw);
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/i2c/twl.h>
INIT_WORK(&bci->work, twl4030_bci_usb_work);
- bci->transceiver = usb_get_transceiver();
- if (bci->transceiver != NULL) {
+ bci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (!IS_ERR_OR_NULL(bci->transceiver)) {
bci->usb_nb.notifier_call = twl4030_bci_usb_ncb;
usb_register_notifier(bci->transceiver, &bci->usb_nb);
}
return 0;
fail_unmask_interrupts:
- if (bci->transceiver != NULL) {
+ if (!IS_ERR_OR_NULL(bci->transceiver)) {
usb_unregister_notifier(bci->transceiver, &bci->usb_nb);
- usb_put_transceiver(bci->transceiver);
+ usb_put_phy(bci->transceiver);
}
free_irq(bci->irq_bci, bci);
fail_bci_irq:
twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
TWL4030_INTERRUPTS_BCIIMR2A);
- if (bci->transceiver != NULL) {
+ if (!IS_ERR_OR_NULL(bci->transceiver)) {
usb_unregister_notifier(bci->transceiver, &bci->usb_nb);
- usb_put_transceiver(bci->transceiver);
+ usb_put_phy(bci->transceiver);
}
free_irq(bci->irq_bci, bci);
free_irq(bci->irq_chg, bci);
config USB_CHIPIDEA_HOST
bool "ChipIdea host controller"
+ select USB_EHCI_ROOT_HUB_TT
help
Say Y here to enable host controller functionality of the
ChipIdea driver.
ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST) += host.o
ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG) += debug.o
+# Glue/Bridge layers go here
+
+obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_msm.o
+
+# PCI doesn't provide stubs, need to check
ifneq ($(CONFIG_PCI),)
obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_pci.o
endif
-ifneq ($(CONFIG_ARCH_MSM),)
- obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_msm.o
+ifneq ($(CONFIG_OF_DEVICE),)
+ obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o
endif
* @name: string description of the endpoint
* @qh: queue head for this endpoint
* @wedge: is the endpoint wedged
- * @udc: pointer to the controller
+ * @ci: pointer to the controller
* @lock: pointer to controller's spinlock
* @td_pool: pointer to controller's TD pool
*/
int wedge;
/* global resources */
- struct ci13xxx *udc;
+ struct ci13xxx *ci;
spinlock_t *lock;
struct dma_pool *td_pool;
};
* @remote_wakeup: host-enabled remote wakeup
* @suspended: suspended by host
* @test_mode: the selected test mode
- * @udc_driver: platform specific information supplied by parent device
+ * @platdata: platform specific information supplied by parent device
* @vbus_active: is VBUS active
* @transceiver: pointer to USB PHY, if any
* @hcd: pointer to usb_hcd for ehci host driver
u8 suspended;
u8 test_mode;
- struct ci13xxx_udc_driver *udc_driver;
+ struct ci13xxx_platform_data *platdata;
int vbus_active;
+ /* FIXME: some day, we'll not use global phy */
+ bool global_phy;
struct usb_phy *transceiver;
struct usb_hcd *hcd;
};
*
* This function returns register contents
*/
-static inline u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask)
+static inline u32 hw_read(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask)
{
- return ioread32(udc->hw_bank.regmap[reg]) & mask;
+ return ioread32(ci->hw_bank.regmap[reg]) & mask;
}
/**
* @mask: bitfield mask
* @data: new value
*/
-static inline void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline void hw_write(struct ci13xxx *ci, enum ci13xxx_regs reg,
u32 mask, u32 data)
{
if (~mask)
- data = (ioread32(udc->hw_bank.regmap[reg]) & ~mask)
+ data = (ioread32(ci->hw_bank.regmap[reg]) & ~mask)
| (data & mask);
- iowrite32(data, udc->hw_bank.regmap[reg]);
+ iowrite32(data, ci->hw_bank.regmap[reg]);
}
/**
*
* This function returns register contents
*/
-static inline u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline u32 hw_test_and_clear(struct ci13xxx *ci, enum ci13xxx_regs reg,
u32 mask)
{
- u32 val = ioread32(udc->hw_bank.regmap[reg]) & mask;
+ u32 val = ioread32(ci->hw_bank.regmap[reg]) & mask;
- iowrite32(val, udc->hw_bank.regmap[reg]);
+ iowrite32(val, ci->hw_bank.regmap[reg]);
return val;
}
*
* This function returns register contents
*/
-static inline u32 hw_test_and_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
+static inline u32 hw_test_and_write(struct ci13xxx *ci, enum ci13xxx_regs reg,
u32 mask, u32 data)
{
- u32 val = hw_read(udc, reg, ~0);
+ u32 val = hw_read(ci, reg, ~0);
- hw_write(udc, reg, mask, data);
+ hw_write(ci, reg, mask, data);
return (val & mask) >> ffs_nr(mask);
}
--- /dev/null
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Marek Vasut <marex@denx.de>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/dma-mapping.h>
+#include <linux/usb/chipidea.h>
+#include <linux/clk.h>
+#include <linux/regulator/consumer.h>
+
+#include "ci.h"
+
+#define pdev_to_phy(pdev) \
+ ((struct usb_phy *)platform_get_drvdata(pdev))
+
+struct ci13xxx_imx_data {
+ struct device_node *phy_np;
+ struct usb_phy *phy;
+ struct platform_device *ci_pdev;
+ struct clk *clk;
+ struct regulator *reg_vbus;
+};
+
+static struct ci13xxx_platform_data ci13xxx_imx_platdata __devinitdata = {
+ .name = "ci13xxx_imx",
+ .flags = CI13XXX_REQUIRE_TRANSCEIVER |
+ CI13XXX_PULLUP_ON_VBUS |
+ CI13XXX_DISABLE_STREAMING,
+ .capoffset = DEF_CAPOFFSET,
+};
+
+static int __devinit ci13xxx_imx_probe(struct platform_device *pdev)
+{
+ struct ci13xxx_imx_data *data;
+ struct platform_device *plat_ci, *phy_pdev;
+ struct device_node *phy_np;
+ struct resource *res;
+ struct regulator *reg_vbus;
+ int ret;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ dev_err(&pdev->dev, "Failed to allocate CI13xxx-IMX data!\n");
+ return -ENOMEM;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Can't get device resources!\n");
+ return -ENOENT;
+ }
+
+ data->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(data->clk)) {
+ dev_err(&pdev->dev,
+ "Failed to get clock, err=%ld\n", PTR_ERR(data->clk));
+ return PTR_ERR(data->clk);
+ }
+
+ ret = clk_prepare_enable(data->clk);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to prepare or enable clock, err=%d\n", ret);
+ return ret;
+ }
+
+ phy_np = of_parse_phandle(pdev->dev.of_node, "fsl,usbphy", 0);
+ if (phy_np) {
+ data->phy_np = phy_np;
+ phy_pdev = of_find_device_by_node(phy_np);
+ if (phy_pdev) {
+ struct usb_phy *phy;
+ phy = pdev_to_phy(phy_pdev);
+ if (phy &&
+ try_module_get(phy_pdev->dev.driver->owner)) {
+ usb_phy_init(phy);
+ data->phy = phy;
+ }
+ }
+ }
+
+ /* we only support host now, so enable vbus here */
+ reg_vbus = devm_regulator_get(&pdev->dev, "vbus");
+ if (!IS_ERR(reg_vbus)) {
+ ret = regulator_enable(reg_vbus);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to enable vbus regulator, err=%d\n",
+ ret);
+ goto put_np;
+ }
+ data->reg_vbus = reg_vbus;
+ } else {
+ reg_vbus = NULL;
+ }
+
+ ci13xxx_imx_platdata.phy = data->phy;
+
+ if (!pdev->dev.dma_mask) {
+ pdev->dev.dma_mask = devm_kzalloc(&pdev->dev,
+ sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
+ if (!pdev->dev.dma_mask) {
+ ret = -ENOMEM;
+ dev_err(&pdev->dev, "Failed to alloc dma_mask!\n");
+ goto err;
+ }
+ *pdev->dev.dma_mask = DMA_BIT_MASK(32);
+ dma_set_coherent_mask(&pdev->dev, *pdev->dev.dma_mask);
+ }
+ plat_ci = ci13xxx_add_device(&pdev->dev,
+ pdev->resource, pdev->num_resources,
+ &ci13xxx_imx_platdata);
+ if (IS_ERR(plat_ci)) {
+ ret = PTR_ERR(plat_ci);
+ dev_err(&pdev->dev,
+ "Can't register ci_hdrc platform device, err=%d\n",
+ ret);
+ goto err;
+ }
+
+ data->ci_pdev = plat_ci;
+ platform_set_drvdata(pdev, data);
+
+ pm_runtime_no_callbacks(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+
+err:
+ if (reg_vbus)
+ regulator_disable(reg_vbus);
+put_np:
+ if (phy_np)
+ of_node_put(phy_np);
+ clk_disable_unprepare(data->clk);
+ return ret;
+}
+
+static int __devexit ci13xxx_imx_remove(struct platform_device *pdev)
+{
+ struct ci13xxx_imx_data *data = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+ ci13xxx_remove_device(data->ci_pdev);
+
+ if (data->reg_vbus)
+ regulator_disable(data->reg_vbus);
+
+ if (data->phy) {
+ usb_phy_shutdown(data->phy);
+ module_put(data->phy->dev->driver->owner);
+ }
+
+ of_node_put(data->phy_np);
+
+ clk_disable_unprepare(data->clk);
+
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static const struct of_device_id ci13xxx_imx_dt_ids[] = {
+ { .compatible = "fsl,imx27-usb", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ci13xxx_imx_dt_ids);
+
+static struct platform_driver ci13xxx_imx_driver = {
+ .probe = ci13xxx_imx_probe,
+ .remove = __devexit_p(ci13xxx_imx_remove),
+ .driver = {
+ .name = "imx_usb",
+ .owner = THIS_MODULE,
+ .of_match_table = ci13xxx_imx_dt_ids,
+ },
+};
+
+module_platform_driver(ci13xxx_imx_driver);
+
+MODULE_ALIAS("platform:imx-usb");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("CI13xxx i.MX USB binding");
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
#include "ci.h"
-#define MSM_USB_BASE (udc->hw_bank.abs)
+#define MSM_USB_BASE (ci->hw_bank.abs)
-static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
+static void ci13xxx_msm_notify_event(struct ci13xxx *ci, unsigned event)
{
- struct device *dev = udc->gadget.dev.parent;
+ struct device *dev = ci->gadget.dev.parent;
int val;
switch (event) {
* Put the transceiver in non-driving mode. Otherwise host
* may not detect soft-disconnection.
*/
- val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
+ val = usb_phy_io_read(ci->transceiver, ULPI_FUNC_CTRL);
val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
- usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
+ usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL);
break;
default:
- dev_dbg(dev, "unknown ci13xxx_udc event\n");
+ dev_dbg(dev, "unknown ci13xxx event\n");
break;
}
}
-static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
+static struct ci13xxx_platform_data ci13xxx_msm_platdata = {
.name = "ci13xxx_msm",
.flags = CI13XXX_REGS_SHARED |
CI13XXX_REQUIRE_TRANSCEIVER |
.notify_event = ci13xxx_msm_notify_event,
};
-static int ci13xxx_msm_probe(struct platform_device *pdev)
+static int __devinit ci13xxx_msm_probe(struct platform_device *pdev)
{
struct platform_device *plat_ci;
- int ret;
dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
- plat_ci = platform_device_alloc("ci_hdrc", -1);
- if (!plat_ci) {
- dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
- return -ENOMEM;
+ plat_ci = ci13xxx_add_device(&pdev->dev,
+ pdev->resource, pdev->num_resources,
+ &ci13xxx_msm_platdata);
+ if (IS_ERR(plat_ci)) {
+ dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
+ return PTR_ERR(plat_ci);
}
- ret = platform_device_add_resources(plat_ci, pdev->resource,
- pdev->num_resources);
- if (ret) {
- dev_err(&pdev->dev, "can't add resources to platform device\n");
- goto put_platform;
- }
-
- ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
- sizeof(ci13xxx_msm_udc_driver));
- if (ret)
- goto put_platform;
-
- ret = platform_device_add(plat_ci);
- if (ret)
- goto put_platform;
+ platform_set_drvdata(pdev, plat_ci);
pm_runtime_no_callbacks(&pdev->dev);
pm_runtime_enable(&pdev->dev);
return 0;
+}
+
+static int __devexit ci13xxx_msm_remove(struct platform_device *pdev)
+{
+ struct platform_device *plat_ci = platform_get_drvdata(pdev);
-put_platform:
- platform_device_put(plat_ci);
+ pm_runtime_disable(&pdev->dev);
+ ci13xxx_remove_device(plat_ci);
- return ret;
+ return 0;
}
static struct platform_driver ci13xxx_msm_driver = {
.probe = ci13xxx_msm_probe,
+ .remove = __devexit_p(ci13xxx_msm_remove),
.driver = { .name = "msm_hsusb", },
};
-MODULE_ALIAS("platform:msm_hsusb");
-static int __init ci13xxx_msm_init(void)
-{
- return platform_driver_register(&ci13xxx_msm_driver);
-}
-module_init(ci13xxx_msm_init);
+module_platform_driver(ci13xxx_msm_driver);
+MODULE_ALIAS("platform:msm_hsusb");
MODULE_LICENSE("GPL v2");
/******************************************************************************
* PCI block
*****************************************************************************/
-struct ci13xxx_udc_driver pci_driver = {
+struct ci13xxx_platform_data pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = DEF_CAPOFFSET,
};
-struct ci13xxx_udc_driver langwell_pci_driver = {
+struct ci13xxx_platform_data langwell_pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = 0,
};
-struct ci13xxx_udc_driver penwell_pci_driver = {
+struct ci13xxx_platform_data penwell_pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = 0,
.power_budget = 200,
static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
- struct ci13xxx_udc_driver *driver = (void *)id->driver_data;
+ struct ci13xxx_platform_data *platdata = (void *)id->driver_data;
struct platform_device *plat_ci;
struct resource res[3];
int retval = 0, nres = 2;
- if (!driver) {
+ if (!platdata) {
dev_err(&pdev->dev, "device doesn't provide driver data\n");
return -ENODEV;
}
pci_set_master(pdev);
pci_try_set_mwi(pdev);
- plat_ci = platform_device_alloc("ci_hdrc", -1);
- if (!plat_ci) {
- dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
- retval = -ENOMEM;
- goto disable_device;
- }
-
memset(res, 0, sizeof(res));
res[0].start = pci_resource_start(pdev, 0);
res[0].end = pci_resource_end(pdev, 0);
res[1].start = pdev->irq;
res[1].flags = IORESOURCE_IRQ;
- retval = platform_device_add_resources(plat_ci, res, nres);
- if (retval) {
- dev_err(&pdev->dev, "can't add resources to platform device\n");
- goto put_platform;
+ plat_ci = ci13xxx_add_device(&pdev->dev, res, nres, platdata);
+ if (IS_ERR(plat_ci)) {
+ dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
+ retval = PTR_ERR(plat_ci);
+ goto disable_device;
}
- retval = platform_device_add_data(plat_ci, driver, sizeof(*driver));
- if (retval)
- goto put_platform;
-
- dma_set_coherent_mask(&plat_ci->dev, pdev->dev.coherent_dma_mask);
- plat_ci->dev.dma_mask = pdev->dev.dma_mask;
- plat_ci->dev.dma_parms = pdev->dev.dma_parms;
- plat_ci->dev.parent = &pdev->dev;
-
pci_set_drvdata(pdev, plat_ci);
- retval = platform_device_add(plat_ci);
- if (retval)
- goto put_platform;
-
return 0;
- put_platform:
- pci_set_drvdata(pdev, NULL);
- platform_device_put(plat_ci);
disable_device:
pci_disable_device(pdev);
done:
{
struct platform_device *plat_ci = pci_get_drvdata(pdev);
- platform_device_unregister(plat_ci);
+ ci13xxx_remove_device(plat_ci);
pci_set_drvdata(pdev, NULL);
pci_disable_device(pdev);
}
static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
{
PCI_DEVICE(0x153F, 0x1004),
- .driver_data = (kernel_ulong_t)&pci_driver,
+ .driver_data = (kernel_ulong_t)&pci_platdata,
},
{
PCI_DEVICE(0x153F, 0x1006),
- .driver_data = (kernel_ulong_t)&pci_driver,
+ .driver_data = (kernel_ulong_t)&pci_platdata,
},
{
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
- .driver_data = (kernel_ulong_t)&langwell_pci_driver,
+ .driver_data = (kernel_ulong_t)&langwell_pci_platdata,
},
{
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
- .driver_data = (kernel_ulong_t)&penwell_pci_driver,
+ .driver_data = (kernel_ulong_t)&penwell_pci_platdata,
},
{ 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
};
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/module.h>
+#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
ci->hw_bank.abs = base;
ci->hw_bank.cap = ci->hw_bank.abs;
- ci->hw_bank.cap += ci->udc_driver->capoffset;
+ ci->hw_bank.cap += ci->platdata->capoffset;
ci->hw_bank.op = ci->hw_bank.cap + ioread8(ci->hw_bank.cap);
hw_alloc_regmap(ci, false);
udelay(10); /* not RTOS friendly */
- if (ci->udc_driver->notify_event)
- ci->udc_driver->notify_event(ci,
+ if (ci->platdata->notify_event)
+ ci->platdata->notify_event(ci,
CI13XXX_CONTROLLER_RESET_EVENT);
- if (ci->udc_driver->flags & CI13XXX_DISABLE_STREAMING)
+ if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING)
hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS);
/* USBMODE should be configured step by step */
return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci);
}
+static DEFINE_IDA(ci_ida);
+
+struct platform_device *ci13xxx_add_device(struct device *dev,
+ struct resource *res, int nres,
+ struct ci13xxx_platform_data *platdata)
+{
+ struct platform_device *pdev;
+ int id, ret;
+
+ id = ida_simple_get(&ci_ida, 0, 0, GFP_KERNEL);
+ if (id < 0)
+ return ERR_PTR(id);
+
+ pdev = platform_device_alloc("ci_hdrc", id);
+ if (!pdev) {
+ ret = -ENOMEM;
+ goto put_id;
+ }
+
+ pdev->dev.parent = dev;
+ pdev->dev.dma_mask = dev->dma_mask;
+ pdev->dev.dma_parms = dev->dma_parms;
+ dma_set_coherent_mask(&pdev->dev, dev->coherent_dma_mask);
+
+ ret = platform_device_add_resources(pdev, res, nres);
+ if (ret)
+ goto err;
+
+ ret = platform_device_add_data(pdev, platdata, sizeof(*platdata));
+ if (ret)
+ goto err;
+
+ ret = platform_device_add(pdev);
+ if (ret)
+ goto err;
+
+ return pdev;
+
+err:
+ platform_device_put(pdev);
+put_id:
+ ida_simple_remove(&ci_ida, id);
+ return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(ci13xxx_add_device);
+
+void ci13xxx_remove_device(struct platform_device *pdev)
+{
+ platform_device_unregister(pdev);
+ ida_simple_remove(&ci_ida, pdev->id);
+}
+EXPORT_SYMBOL_GPL(ci13xxx_remove_device);
+
static int __devinit ci_hdrc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
}
ci->dev = dev;
- ci->udc_driver = dev->platform_data;
+ ci->platdata = dev->platform_data;
+ if (ci->platdata->phy)
+ ci->transceiver = ci->platdata->phy;
+ else
+ ci->global_phy = true;
ret = hw_device_init(ci, base);
if (ret < 0) {
}
platform_set_drvdata(pdev, ci);
- ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->udc_driver->name,
+ ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name,
ci);
if (ret)
goto stop;
*
* This function returns number of registers read
*/
-static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size)
+static size_t hw_register_read(struct ci13xxx *ci, u32 *buf, size_t size)
{
unsigned i;
- if (size > udc->hw_bank.size)
- size = udc->hw_bank.size;
+ if (size > ci->hw_bank.size)
+ size = ci->hw_bank.size;
for (i = 0; i < size; i++)
- buf[i] = hw_read(udc, i * sizeof(u32), ~0);
+ buf[i] = hw_read(ci, i * sizeof(u32), ~0);
return size;
}
*
* This function returns an error code
*/
-static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data)
+static int hw_register_write(struct ci13xxx *ci, u16 addr, u32 data)
{
/* align */
addr /= sizeof(u32);
- if (addr >= udc->hw_bank.size)
+ if (addr >= ci->hw_bank.size)
return -EINVAL;
/* align */
addr *= sizeof(u32);
- hw_write(udc, addr, ~0, data);
+ hw_write(ci, addr, ~0, data);
return 0;
}
*
* This function returns an error code
*/
-static int hw_intr_clear(struct ci13xxx *udc, int n)
+static int hw_intr_clear(struct ci13xxx *ci, int n)
{
if (n >= REG_BITS)
return -EINVAL;
- hw_write(udc, OP_USBINTR, BIT(n), 0);
- hw_write(udc, OP_USBSTS, BIT(n), BIT(n));
+ hw_write(ci, OP_USBINTR, BIT(n), 0);
+ hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
return 0;
}
*
* This function returns an error code
*/
-static int hw_intr_force(struct ci13xxx *udc, int n)
+static int hw_intr_force(struct ci13xxx *ci, int n)
{
if (n >= REG_BITS)
return -EINVAL;
- hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
- hw_write(udc, OP_USBINTR, BIT(n), BIT(n));
- hw_write(udc, OP_USBSTS, BIT(n), BIT(n));
- hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, 0);
+ hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
+ hw_write(ci, OP_USBINTR, BIT(n), BIT(n));
+ hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
+ hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, 0);
return 0;
}
static ssize_t show_device(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
- struct usb_gadget *gadget = &udc->gadget;
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct usb_gadget *gadget = &ci->gadget;
int n = 0;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+ dev_err(ci->dev, "[%s] EINVAL\n", __func__);
return 0;
}
static ssize_t show_driver(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
- struct usb_gadget_driver *driver = udc->driver;
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct usb_gadget_driver *driver = ci->driver;
int n = 0;
if (attr == NULL || buf == NULL) {
static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long flags;
u32 intr;
unsigned i, j, n = 0;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+ dev_err(ci->dev, "[%s] EINVAL\n", __func__);
return 0;
}
- spin_lock_irqsave(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
/*n += scnprintf(buf + n, PAGE_SIZE - n,
- "status = %08x\n", hw_read_intr_status(udc));
+ "status = %08x\n", hw_read_intr_status(ci));
n += scnprintf(buf + n, PAGE_SIZE - n,
- "enable = %08x\n", hw_read_intr_enable(udc));*/
+ "enable = %08x\n", hw_read_intr_enable(ci));*/
n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
isr_statistics.test);
n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
}
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
return n;
}
static ssize_t store_inters(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long flags;
unsigned en, bit;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "EINVAL\n");
+ dev_err(ci->dev, "EINVAL\n");
goto done;
}
if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) {
- dev_err(udc->dev, "<1|0> <bit>: enable|disable interrupt\n");
+ dev_err(ci->dev, "<1|0> <bit>: enable|disable interrupt\n");
goto done;
}
- spin_lock_irqsave(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
if (en) {
- if (hw_intr_force(udc, bit))
+ if (hw_intr_force(ci, bit))
dev_err(dev, "invalid bit number\n");
else
isr_statistics.test++;
} else {
- if (hw_intr_clear(udc, bit))
+ if (hw_intr_clear(ci, bit))
dev_err(dev, "invalid bit number\n");
}
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
done:
return count;
static ssize_t show_port_test(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long flags;
unsigned mode;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "EINVAL\n");
+ dev_err(ci->dev, "EINVAL\n");
return 0;
}
- spin_lock_irqsave(&udc->lock, flags);
- mode = hw_port_test_get(udc);
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ mode = hw_port_test_get(ci);
+ spin_unlock_irqrestore(&ci->lock, flags);
return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode);
}
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long flags;
unsigned mode;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+ dev_err(ci->dev, "[%s] EINVAL\n", __func__);
goto done;
}
if (sscanf(buf, "%u", &mode) != 1) {
- dev_err(udc->dev, "<mode>: set port test mode");
+ dev_err(ci->dev, "<mode>: set port test mode");
goto done;
}
- spin_lock_irqsave(&udc->lock, flags);
- if (hw_port_test_set(udc, mode))
- dev_err(udc->dev, "invalid mode\n");
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ if (hw_port_test_set(ci, mode))
+ dev_err(ci->dev, "invalid mode\n");
+ spin_unlock_irqrestore(&ci->lock, flags);
done:
return count;
static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long flags;
unsigned i, j, n = 0;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+ dev_err(ci->dev, "[%s] EINVAL\n", __func__);
return 0;
}
- spin_lock_irqsave(&udc->lock, flags);
- for (i = 0; i < udc->hw_ep_max/2; i++) {
- struct ci13xxx_ep *mEpRx = &udc->ci13xxx_ep[i];
+ spin_lock_irqsave(&ci->lock, flags);
+ for (i = 0; i < ci->hw_ep_max/2; i++) {
+ struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i];
struct ci13xxx_ep *mEpTx =
- &udc->ci13xxx_ep[i + udc->hw_ep_max/2];
+ &ci->ci13xxx_ep[i + ci->hw_ep_max/2];
n += scnprintf(buf + n, PAGE_SIZE - n,
"EP=%02i: RX=%08X TX=%08X\n",
i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
*((u32 *)mEpTx->qh.ptr + j));
}
}
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
return n;
}
static ssize_t show_registers(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long flags;
u32 *dump;
unsigned i, k, n = 0;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+ dev_err(ci->dev, "[%s] EINVAL\n", __func__);
return 0;
}
dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL);
if (!dump) {
- dev_err(udc->dev, "%s: out of memory\n", __func__);
+ dev_err(ci->dev, "%s: out of memory\n", __func__);
return 0;
}
- spin_lock_irqsave(&udc->lock, flags);
- k = hw_register_read(udc, dump, DUMP_ENTRIES);
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ k = hw_register_read(ci, dump, DUMP_ENTRIES);
+ spin_unlock_irqrestore(&ci->lock, flags);
for (i = 0; i < k; i++) {
n += scnprintf(buf + n, PAGE_SIZE - n,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long addr, data, flags;
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+ dev_err(ci->dev, "[%s] EINVAL\n", __func__);
goto done;
}
if (sscanf(buf, "%li %li", &addr, &data) != 2) {
- dev_err(udc->dev,
+ dev_err(ci->dev,
"<addr> <data>: write data to register address\n");
goto done;
}
- spin_lock_irqsave(&udc->lock, flags);
- if (hw_register_write(udc, addr, data))
- dev_err(udc->dev, "invalid address range\n");
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ if (hw_register_write(ci, addr, data))
+ dev_err(ci->dev, "invalid address range\n");
+ spin_unlock_irqrestore(&ci->lock, flags);
done:
return count;
static ssize_t show_requests(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
unsigned long flags;
struct list_head *ptr = NULL;
struct ci13xxx_req *req = NULL;
unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32);
if (attr == NULL || buf == NULL) {
- dev_err(udc->dev, "[%s] EINVAL\n", __func__);
+ dev_err(ci->dev, "[%s] EINVAL\n", __func__);
return 0;
}
- spin_lock_irqsave(&udc->lock, flags);
- for (i = 0; i < udc->hw_ep_max; i++)
- list_for_each(ptr, &udc->ci13xxx_ep[i].qh.queue)
+ spin_lock_irqsave(&ci->lock, flags);
+ for (i = 0; i < ci->hw_ep_max; i++)
+ list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue)
{
req = list_entry(ptr, struct ci13xxx_req, queue);
n += scnprintf(buf + n, PAGE_SIZE - n,
"EP=%02i: TD=%08X %s\n",
- i % udc->hw_ep_max/2, (u32)req->dma,
- ((i < udc->hw_ep_max/2) ? "RX" : "TX"));
+ i % ci->hw_ep_max/2, (u32)req->dma,
+ ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
for (j = 0; j < qSize; j++)
n += scnprintf(buf + n, PAGE_SIZE - n,
" %04X: %08X\n", j,
*((u32 *)req->ptr + j));
}
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
return n;
}
hcd->regs = ci->hw_bank.abs;
hcd->has_tt = 1;
- hcd->power_budget = ci->udc_driver->power_budget;
+ hcd->power_budget = ci->platdata->power_budget;
+ hcd->phy = ci->transceiver;
ehci = hcd_to_ehci(hcd);
ehci->caps = ci->hw_bank.cap;
#include <linux/device.h>
#include <linux/dmapool.h>
#include <linux/dma-mapping.h>
+#include <linux/err.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/module.h>
return num + (dir ? 16 : 0);
}
-static inline int ep_to_bit(struct ci13xxx *udc, int n)
+static inline int ep_to_bit(struct ci13xxx *ci, int n)
{
- int fill = 16 - udc->hw_ep_max / 2;
+ int fill = 16 - ci->hw_ep_max / 2;
- if (n >= udc->hw_ep_max / 2)
+ if (n >= ci->hw_ep_max / 2)
n += fill;
return n;
*
* This function returns an error code
*/
-static int hw_device_state(struct ci13xxx *udc, u32 dma)
+static int hw_device_state(struct ci13xxx *ci, u32 dma)
{
if (dma) {
- hw_write(udc, OP_ENDPTLISTADDR, ~0, dma);
+ hw_write(ci, OP_ENDPTLISTADDR, ~0, dma);
/* interrupt, error, port change, reset, sleep/suspend */
- hw_write(udc, OP_USBINTR, ~0,
+ hw_write(ci, OP_USBINTR, ~0,
USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
- hw_write(udc, OP_USBCMD, USBCMD_RS, USBCMD_RS);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
} else {
- hw_write(udc, OP_USBCMD, USBCMD_RS, 0);
- hw_write(udc, OP_USBINTR, ~0, 0);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+ hw_write(ci, OP_USBINTR, ~0, 0);
}
return 0;
}
*
* This function returns an error code
*/
-static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_flush(struct ci13xxx *ci, int num, int dir)
{
int n = hw_ep_bit(num, dir);
do {
/* flush any pending transfer */
- hw_write(udc, OP_ENDPTFLUSH, BIT(n), BIT(n));
- while (hw_read(udc, OP_ENDPTFLUSH, BIT(n)))
+ hw_write(ci, OP_ENDPTFLUSH, BIT(n), BIT(n));
+ while (hw_read(ci, OP_ENDPTFLUSH, BIT(n)))
cpu_relax();
- } while (hw_read(udc, OP_ENDPTSTAT, BIT(n)));
+ } while (hw_read(ci, OP_ENDPTSTAT, BIT(n)));
return 0;
}
*
* This function returns an error code
*/
-static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_disable(struct ci13xxx *ci, int num, int dir)
{
- hw_ep_flush(udc, num, dir);
- hw_write(udc, OP_ENDPTCTRL + num,
+ hw_ep_flush(ci, num, dir);
+ hw_write(ci, OP_ENDPTCTRL + num,
dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
return 0;
}
*
* This function returns an error code
*/
-static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
+static int hw_ep_enable(struct ci13xxx *ci, int num, int dir, int type)
{
u32 mask, data;
mask |= ENDPTCTRL_RXE; /* enable */
data |= ENDPTCTRL_RXE;
}
- hw_write(udc, OP_ENDPTCTRL + num, mask, data);
+ hw_write(ci, OP_ENDPTCTRL + num, mask, data);
return 0;
}
*
* This function returns 1 if endpoint halted
*/
-static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_get_halt(struct ci13xxx *ci, int num, int dir)
{
u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
- return hw_read(udc, OP_ENDPTCTRL + num, mask) ? 1 : 0;
+ return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0;
}
/**
*
* This function returns setup status
*/
-static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
+static int hw_test_and_clear_setup_status(struct ci13xxx *ci, int n)
{
- n = ep_to_bit(udc, n);
- return hw_test_and_clear(udc, OP_ENDPTSETUPSTAT, BIT(n));
+ n = ep_to_bit(ci, n);
+ return hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(n));
}
/**
*
* This function returns an error code
*/
-static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
+static int hw_ep_prime(struct ci13xxx *ci, int num, int dir, int is_ctrl)
{
int n = hw_ep_bit(num, dir);
- if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+ if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
return -EAGAIN;
- hw_write(udc, OP_ENDPTPRIME, BIT(n), BIT(n));
+ hw_write(ci, OP_ENDPTPRIME, BIT(n), BIT(n));
- while (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+ while (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
cpu_relax();
- if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+ if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
return -EAGAIN;
/* status shoult be tested according with manual but it doesn't work */
*
* This function returns an error code
*/
-static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
+static int hw_ep_set_halt(struct ci13xxx *ci, int num, int dir, int value)
{
if (value != 0 && value != 1)
return -EINVAL;
u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
/* data toggle - reserved for EP0 but it's in ESS */
- hw_write(udc, reg, mask_xs|mask_xr,
+ hw_write(ci, reg, mask_xs|mask_xr,
value ? mask_xs : mask_xr);
- } while (value != hw_ep_get_halt(udc, num, dir));
+ } while (value != hw_ep_get_halt(ci, num, dir));
return 0;
}
*
* This function returns true if high speed port
*/
-static int hw_port_is_high_speed(struct ci13xxx *udc)
+static int hw_port_is_high_speed(struct ci13xxx *ci)
{
- return udc->hw_bank.lpm ? hw_read(udc, OP_DEVLC, DEVLC_PSPD) :
- hw_read(udc, OP_PORTSC, PORTSC_HSP);
+ return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) :
+ hw_read(ci, OP_PORTSC, PORTSC_HSP);
}
/**
*
* This function returns register data
*/
-static u32 hw_read_intr_enable(struct ci13xxx *udc)
+static u32 hw_read_intr_enable(struct ci13xxx *ci)
{
- return hw_read(udc, OP_USBINTR, ~0);
+ return hw_read(ci, OP_USBINTR, ~0);
}
/**
*
* This function returns register data
*/
-static u32 hw_read_intr_status(struct ci13xxx *udc)
+static u32 hw_read_intr_status(struct ci13xxx *ci)
{
- return hw_read(udc, OP_USBSTS, ~0);
+ return hw_read(ci, OP_USBSTS, ~0);
}
/**
*
* This function returns complete status
*/
-static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
+static int hw_test_and_clear_complete(struct ci13xxx *ci, int n)
{
- n = ep_to_bit(udc, n);
- return hw_test_and_clear(udc, OP_ENDPTCOMPLETE, BIT(n));
+ n = ep_to_bit(ci, n);
+ return hw_test_and_clear(ci, OP_ENDPTCOMPLETE, BIT(n));
}
/**
*
* This function returns active interrutps
*/
-static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
+static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci)
{
- u32 reg = hw_read_intr_status(udc) & hw_read_intr_enable(udc);
+ u32 reg = hw_read_intr_status(ci) & hw_read_intr_enable(ci);
- hw_write(udc, OP_USBSTS, ~0, reg);
+ hw_write(ci, OP_USBSTS, ~0, reg);
return reg;
}
*
* This function returns guard value
*/
-static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_clear_setup_guard(struct ci13xxx *ci)
{
- return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, 0);
+ return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, 0);
}
/**
*
* This function returns guard value
*/
-static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_set_setup_guard(struct ci13xxx *ci)
{
- return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
+ return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
}
/**
* This function explicitly sets the address, without the "USBADRA" (advance)
* feature, which is not supported by older versions of the controller.
*/
-static void hw_usb_set_address(struct ci13xxx *udc, u8 value)
+static void hw_usb_set_address(struct ci13xxx *ci, u8 value)
{
- hw_write(udc, OP_DEVICEADDR, DEVICEADDR_USBADR,
+ hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR,
value << ffs_nr(DEVICEADDR_USBADR));
}
*
* This function returns an error code
*/
-static int hw_usb_reset(struct ci13xxx *udc)
+static int hw_usb_reset(struct ci13xxx *ci)
{
- hw_usb_set_address(udc, 0);
+ hw_usb_set_address(ci, 0);
/* ESS flushes only at end?!? */
- hw_write(udc, OP_ENDPTFLUSH, ~0, ~0);
+ hw_write(ci, OP_ENDPTFLUSH, ~0, ~0);
/* clear setup token semaphores */
- hw_write(udc, OP_ENDPTSETUPSTAT, 0, 0);
+ hw_write(ci, OP_ENDPTSETUPSTAT, 0, 0);
/* clear complete status */
- hw_write(udc, OP_ENDPTCOMPLETE, 0, 0);
+ hw_write(ci, OP_ENDPTCOMPLETE, 0, 0);
/* wait until all bits cleared */
- while (hw_read(udc, OP_ENDPTPRIME, ~0))
+ while (hw_read(ci, OP_ENDPTPRIME, ~0))
udelay(10); /* not RTOS friendly */
/* reset all endpoints ? */
*/
static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
{
- struct ci13xxx *udc = mEp->udc;
+ struct ci13xxx *ci = mEp->ci;
unsigned i;
int ret = 0;
unsigned length = mReq->req.length;
if (!mReq->req.no_interrupt)
mReq->zptr->token |= TD_IOC;
}
- ret = usb_gadget_map_request(&udc->gadget, &mReq->req, mEp->dir);
+ ret = usb_gadget_map_request(&ci->gadget, &mReq->req, mEp->dir);
if (ret)
return ret;
else
mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK;
wmb();
- if (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+ if (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
goto done;
do {
- hw_write(udc, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
- tmp_stat = hw_read(udc, OP_ENDPTSTAT, BIT(n));
- } while (!hw_read(udc, OP_USBCMD, USBCMD_ATDTW));
- hw_write(udc, OP_USBCMD, USBCMD_ATDTW, 0);
+ hw_write(ci, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
+ tmp_stat = hw_read(ci, OP_ENDPTSTAT, BIT(n));
+ } while (!hw_read(ci, OP_USBCMD, USBCMD_ATDTW));
+ hw_write(ci, OP_USBCMD, USBCMD_ATDTW, 0);
if (tmp_stat)
goto done;
}
wmb(); /* synchronize before ep prime */
- ret = hw_ep_prime(udc, mEp->num, mEp->dir,
+ ret = hw_ep_prime(ci, mEp->num, mEp->dir,
mEp->type == USB_ENDPOINT_XFER_CONTROL);
done:
return ret;
mReq->req.status = 0;
- usb_gadget_unmap_request(&mEp->udc->gadget, &mReq->req, mEp->dir);
+ usb_gadget_unmap_request(&mEp->ci->gadget, &mReq->req, mEp->dir);
mReq->req.status = mReq->ptr->token & TD_STATUS;
if ((TD_STATUS_HALTED & mReq->req.status) != 0)
if (mEp == NULL)
return -EINVAL;
- hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+ hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
while (!list_empty(&mEp->qh.queue)) {
static int _gadget_stop_activity(struct usb_gadget *gadget)
{
struct usb_ep *ep;
- struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+ struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget);
unsigned long flags;
- spin_lock_irqsave(&udc->lock, flags);
- udc->gadget.speed = USB_SPEED_UNKNOWN;
- udc->remote_wakeup = 0;
- udc->suspended = 0;
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ ci->gadget.speed = USB_SPEED_UNKNOWN;
+ ci->remote_wakeup = 0;
+ ci->suspended = 0;
+ spin_unlock_irqrestore(&ci->lock, flags);
/* flush all endpoints */
gadget_for_each_ep(ep, gadget) {
usb_ep_fifo_flush(ep);
}
- usb_ep_fifo_flush(&udc->ep0out->ep);
- usb_ep_fifo_flush(&udc->ep0in->ep);
+ usb_ep_fifo_flush(&ci->ep0out->ep);
+ usb_ep_fifo_flush(&ci->ep0in->ep);
- if (udc->driver)
- udc->driver->disconnect(gadget);
+ if (ci->driver)
+ ci->driver->disconnect(gadget);
/* make sure to disable all endpoints */
gadget_for_each_ep(ep, gadget) {
usb_ep_disable(ep);
}
- if (udc->status != NULL) {
- usb_ep_free_request(&udc->ep0in->ep, udc->status);
- udc->status = NULL;
+ if (ci->status != NULL) {
+ usb_ep_free_request(&ci->ep0in->ep, ci->status);
+ ci->status = NULL;
}
return 0;
*****************************************************************************/
/**
* isr_reset_handler: USB reset interrupt handler
- * @udc: UDC device
+ * @ci: UDC device
*
* This function resets USB engine after a bus reset occurred
*/
-static void isr_reset_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_reset_handler(struct ci13xxx *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
{
int retval;
dbg_event(0xFF, "BUS RST", 0);
- spin_unlock(&udc->lock);
- retval = _gadget_stop_activity(&udc->gadget);
+ spin_unlock(&ci->lock);
+ retval = _gadget_stop_activity(&ci->gadget);
if (retval)
goto done;
- retval = hw_usb_reset(udc);
+ retval = hw_usb_reset(ci);
if (retval)
goto done;
- udc->status = usb_ep_alloc_request(&udc->ep0in->ep, GFP_ATOMIC);
- if (udc->status == NULL)
+ ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC);
+ if (ci->status == NULL)
retval = -ENOMEM;
done:
- spin_lock(&udc->lock);
+ spin_lock(&ci->lock);
if (retval)
- dev_err(udc->dev, "error: %i\n", retval);
+ dev_err(ci->dev, "error: %i\n", retval);
}
/**
/**
* isr_get_status_response: get_status request response
- * @udc: udc struct
+ * @ci: ci struct
* @setup: setup request packet
*
* This function returns an error code
*/
-static int isr_get_status_response(struct ci13xxx *udc,
+static int isr_get_status_response(struct ci13xxx *ci,
struct usb_ctrlrequest *setup)
__releases(mEp->lock)
__acquires(mEp->lock)
{
- struct ci13xxx_ep *mEp = udc->ep0in;
+ struct ci13xxx_ep *mEp = ci->ep0in;
struct usb_request *req = NULL;
gfp_t gfp_flags = GFP_ATOMIC;
int dir, num, retval;
if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
/* Assume that device is bus powered for now. */
- *(u16 *)req->buf = udc->remote_wakeup << 1;
+ *(u16 *)req->buf = ci->remote_wakeup << 1;
retval = 0;
} else if ((setup->bRequestType & USB_RECIP_MASK) \
== USB_RECIP_ENDPOINT) {
dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ?
TX : RX;
num = le16_to_cpu(setup->wIndex) & USB_ENDPOINT_NUMBER_MASK;
- *(u16 *)req->buf = hw_ep_get_halt(udc, num, dir);
+ *(u16 *)req->buf = hw_ep_get_halt(ci, num, dir);
}
/* else do nothing; reserved for future use */
static void
isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req)
{
- struct ci13xxx *udc = req->context;
+ struct ci13xxx *ci = req->context;
unsigned long flags;
- if (udc->setaddr) {
- hw_usb_set_address(udc, udc->address);
- udc->setaddr = false;
+ if (ci->setaddr) {
+ hw_usb_set_address(ci, ci->address);
+ ci->setaddr = false;
}
- spin_lock_irqsave(&udc->lock, flags);
- if (udc->test_mode)
- hw_port_test_set(udc, udc->test_mode);
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ if (ci->test_mode)
+ hw_port_test_set(ci, ci->test_mode);
+ spin_unlock_irqrestore(&ci->lock, flags);
}
/**
* isr_setup_status_phase: queues the status phase of a setup transation
- * @udc: udc struct
+ * @ci: ci struct
*
* This function returns an error code
*/
-static int isr_setup_status_phase(struct ci13xxx *udc)
+static int isr_setup_status_phase(struct ci13xxx *ci)
__releases(mEp->lock)
__acquires(mEp->lock)
{
int retval;
struct ci13xxx_ep *mEp;
- mEp = (udc->ep0_dir == TX) ? udc->ep0out : udc->ep0in;
- udc->status->context = udc;
- udc->status->complete = isr_setup_status_complete;
+ mEp = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in;
+ ci->status->context = ci;
+ ci->status->complete = isr_setup_status_complete;
spin_unlock(mEp->lock);
- retval = usb_ep_queue(&mEp->ep, udc->status, GFP_ATOMIC);
+ retval = usb_ep_queue(&mEp->ep, ci->status, GFP_ATOMIC);
spin_lock(mEp->lock);
return retval;
spin_unlock(mEp->lock);
if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) &&
mReq->req.length)
- mEpTemp = mEp->udc->ep0in;
+ mEpTemp = mEp->ci->ep0in;
mReq->req.complete(&mEpTemp->ep, &mReq->req);
spin_lock(mEp->lock);
}
/**
* isr_tr_complete_handler: transaction complete interrupt handler
- * @udc: UDC descriptor
+ * @ci: UDC descriptor
*
* This function handles traffic events
*/
-static void isr_tr_complete_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_tr_complete_handler(struct ci13xxx *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
{
unsigned i;
u8 tmode = 0;
- for (i = 0; i < udc->hw_ep_max; i++) {
- struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+ for (i = 0; i < ci->hw_ep_max; i++) {
+ struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i];
int type, num, dir, err = -EINVAL;
struct usb_ctrlrequest req;
if (mEp->ep.desc == NULL)
continue; /* not configured */
- if (hw_test_and_clear_complete(udc, i)) {
+ if (hw_test_and_clear_complete(ci, i)) {
err = isr_tr_complete_low(mEp);
if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
if (err > 0) /* needs status phase */
- err = isr_setup_status_phase(udc);
+ err = isr_setup_status_phase(ci);
if (err < 0) {
dbg_event(_usb_addr(mEp),
"ERROR", err);
- spin_unlock(&udc->lock);
+ spin_unlock(&ci->lock);
if (usb_ep_set_halt(&mEp->ep))
- dev_err(udc->dev,
+ dev_err(ci->dev,
"error: ep_set_halt\n");
- spin_lock(&udc->lock);
+ spin_lock(&ci->lock);
}
}
}
if (mEp->type != USB_ENDPOINT_XFER_CONTROL ||
- !hw_test_and_clear_setup_status(udc, i))
+ !hw_test_and_clear_setup_status(ci, i))
continue;
if (i != 0) {
- dev_warn(udc->dev, "ctrl traffic at endpoint %d\n", i);
+ dev_warn(ci->dev, "ctrl traffic at endpoint %d\n", i);
continue;
}
* Flush data and handshake transactions of previous
* setup packet.
*/
- _ep_nuke(udc->ep0out);
- _ep_nuke(udc->ep0in);
+ _ep_nuke(ci->ep0out);
+ _ep_nuke(ci->ep0in);
/* read_setup_packet */
do {
- hw_test_and_set_setup_guard(udc);
+ hw_test_and_set_setup_guard(ci);
memcpy(&req, &mEp->qh.ptr->setup, sizeof(req));
- } while (!hw_test_and_clear_setup_guard(udc));
+ } while (!hw_test_and_clear_setup_guard(ci));
type = req.bRequestType;
- udc->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
+ ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
dbg_setup(_usb_addr(mEp), &req);
dir = num & USB_ENDPOINT_DIR_MASK;
num &= USB_ENDPOINT_NUMBER_MASK;
if (dir) /* TX */
- num += udc->hw_ep_max/2;
- if (!udc->ci13xxx_ep[num].wedge) {
- spin_unlock(&udc->lock);
+ num += ci->hw_ep_max/2;
+ if (!ci->ci13xxx_ep[num].wedge) {
+ spin_unlock(&ci->lock);
err = usb_ep_clear_halt(
- &udc->ci13xxx_ep[num].ep);
- spin_lock(&udc->lock);
+ &ci->ci13xxx_ep[num].ep);
+ spin_lock(&ci->lock);
if (err)
break;
}
- err = isr_setup_status_phase(udc);
+ err = isr_setup_status_phase(ci);
} else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
le16_to_cpu(req.wValue) ==
USB_DEVICE_REMOTE_WAKEUP) {
if (req.wLength != 0)
break;
- udc->remote_wakeup = 0;
- err = isr_setup_status_phase(udc);
+ ci->remote_wakeup = 0;
+ err = isr_setup_status_phase(ci);
} else {
goto delegate;
}
if (le16_to_cpu(req.wLength) != 2 ||
le16_to_cpu(req.wValue) != 0)
break;
- err = isr_get_status_response(udc, &req);
+ err = isr_get_status_response(ci, &req);
break;
case USB_REQ_SET_ADDRESS:
if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
if (le16_to_cpu(req.wLength) != 0 ||
le16_to_cpu(req.wIndex) != 0)
break;
- udc->address = (u8)le16_to_cpu(req.wValue);
- udc->setaddr = true;
- err = isr_setup_status_phase(udc);
+ ci->address = (u8)le16_to_cpu(req.wValue);
+ ci->setaddr = true;
+ err = isr_setup_status_phase(ci);
break;
case USB_REQ_SET_FEATURE:
if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
dir = num & USB_ENDPOINT_DIR_MASK;
num &= USB_ENDPOINT_NUMBER_MASK;
if (dir) /* TX */
- num += udc->hw_ep_max/2;
+ num += ci->hw_ep_max/2;
- spin_unlock(&udc->lock);
- err = usb_ep_set_halt(&udc->ci13xxx_ep[num].ep);
- spin_lock(&udc->lock);
+ spin_unlock(&ci->lock);
+ err = usb_ep_set_halt(&ci->ci13xxx_ep[num].ep);
+ spin_lock(&ci->lock);
if (!err)
- isr_setup_status_phase(udc);
+ isr_setup_status_phase(ci);
} else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
if (req.wLength != 0)
break;
switch (le16_to_cpu(req.wValue)) {
case USB_DEVICE_REMOTE_WAKEUP:
- udc->remote_wakeup = 1;
- err = isr_setup_status_phase(udc);
+ ci->remote_wakeup = 1;
+ err = isr_setup_status_phase(ci);
break;
case USB_DEVICE_TEST_MODE:
tmode = le16_to_cpu(req.wIndex) >> 8;
case TEST_SE0_NAK:
case TEST_PACKET:
case TEST_FORCE_EN:
- udc->test_mode = tmode;
+ ci->test_mode = tmode;
err = isr_setup_status_phase(
- udc);
+ ci);
break;
default:
break;
default:
delegate:
if (req.wLength == 0) /* no data phase */
- udc->ep0_dir = TX;
+ ci->ep0_dir = TX;
- spin_unlock(&udc->lock);
- err = udc->driver->setup(&udc->gadget, &req);
- spin_lock(&udc->lock);
+ spin_unlock(&ci->lock);
+ err = ci->driver->setup(&ci->gadget, &req);
+ spin_lock(&ci->lock);
break;
}
if (err < 0) {
dbg_event(_usb_addr(mEp), "ERROR", err);
- spin_unlock(&udc->lock);
+ spin_unlock(&ci->lock);
if (usb_ep_set_halt(&mEp->ep))
- dev_err(udc->dev, "error: ep_set_halt\n");
- spin_lock(&udc->lock);
+ dev_err(ci->dev, "error: ep_set_halt\n");
+ spin_lock(&ci->lock);
}
}
}
mEp->ep.desc = desc;
if (!list_empty(&mEp->qh.queue))
- dev_warn(mEp->udc->dev, "enabling a non-empty endpoint!\n");
+ dev_warn(mEp->ci->dev, "enabling a non-empty endpoint!\n");
mEp->dir = usb_endpoint_dir_in(desc) ? TX : RX;
mEp->num = usb_endpoint_num(desc);
* is always enabled
*/
if (mEp->num)
- retval |= hw_ep_enable(mEp->udc, mEp->num, mEp->dir, mEp->type);
+ retval |= hw_ep_enable(mEp->ci, mEp->num, mEp->dir, mEp->type);
spin_unlock_irqrestore(mEp->lock, flags);
return retval;
dbg_event(_usb_addr(mEp), "DISABLE", 0);
retval |= _ep_nuke(mEp);
- retval |= hw_ep_disable(mEp->udc, mEp->num, mEp->dir);
+ retval |= hw_ep_disable(mEp->ci, mEp->num, mEp->dir);
if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
mEp->dir = (mEp->dir == TX) ? RX : TX;
if (ep == NULL || req == NULL) {
return;
} else if (!list_empty(&mReq->queue)) {
- dev_err(mEp->udc->dev, "freeing queued request\n");
+ dev_err(mEp->ci->dev, "freeing queued request\n");
return;
}
{
struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
- struct ci13xxx *udc = mEp->udc;
+ struct ci13xxx *ci = mEp->ci;
int retval = 0;
unsigned long flags;
if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
if (req->length)
- mEp = (udc->ep0_dir == RX) ?
- udc->ep0out : udc->ep0in;
+ mEp = (ci->ep0_dir == RX) ?
+ ci->ep0out : ci->ep0in;
if (!list_empty(&mEp->qh.queue)) {
_ep_nuke(mEp);
retval = -EOVERFLOW;
- dev_warn(mEp->udc->dev, "endpoint ctrl %X nuked\n",
+ dev_warn(mEp->ci->dev, "endpoint ctrl %X nuked\n",
_usb_addr(mEp));
}
}
/* first nuke then test link, e.g. previous status has not sent */
if (!list_empty(&mReq->queue)) {
retval = -EBUSY;
- dev_err(mEp->udc->dev, "request already in queue\n");
+ dev_err(mEp->ci->dev, "request already in queue\n");
goto done;
}
if (req->length > 4 * CI13XXX_PAGE_SIZE) {
req->length = 4 * CI13XXX_PAGE_SIZE;
retval = -EMSGSIZE;
- dev_warn(mEp->udc->dev, "request length truncated\n");
+ dev_warn(mEp->ci->dev, "request length truncated\n");
}
dbg_queue(_usb_addr(mEp), req, retval);
dbg_event(_usb_addr(mEp), "DEQUEUE", 0);
- hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+ hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
/* pop request */
list_del_init(&mReq->queue);
- usb_gadget_unmap_request(&mEp->udc->gadget, req, mEp->dir);
+ usb_gadget_unmap_request(&mEp->ci->gadget, req, mEp->dir);
req->status = -ECONNRESET;
direction = mEp->dir;
do {
dbg_event(_usb_addr(mEp), "HALT", value);
- retval |= hw_ep_set_halt(mEp->udc, mEp->num, mEp->dir, value);
+ retval |= hw_ep_set_halt(mEp->ci, mEp->num, mEp->dir, value);
if (!value)
mEp->wedge = 0;
unsigned long flags;
if (ep == NULL) {
- dev_err(mEp->udc->dev, "%02X: -EINVAL\n", _usb_addr(mEp));
+ dev_err(mEp->ci->dev, "%02X: -EINVAL\n", _usb_addr(mEp));
return;
}
spin_lock_irqsave(mEp->lock, flags);
dbg_event(_usb_addr(mEp), "FFLUSH", 0);
- hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+ hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
spin_unlock_irqrestore(mEp->lock, flags);
}
*****************************************************************************/
static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
{
- struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+ struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
unsigned long flags;
int gadget_ready = 0;
- if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS))
+ if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS))
return -EOPNOTSUPP;
- spin_lock_irqsave(&udc->lock, flags);
- udc->vbus_active = is_active;
- if (udc->driver)
+ spin_lock_irqsave(&ci->lock, flags);
+ ci->vbus_active = is_active;
+ if (ci->driver)
gadget_ready = 1;
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
if (gadget_ready) {
if (is_active) {
pm_runtime_get_sync(&_gadget->dev);
- hw_device_reset(udc, USBMODE_CM_DC);
- hw_device_state(udc, udc->ep0out->qh.dma);
+ hw_device_reset(ci, USBMODE_CM_DC);
+ hw_device_state(ci, ci->ep0out->qh.dma);
} else {
- hw_device_state(udc, 0);
- if (udc->udc_driver->notify_event)
- udc->udc_driver->notify_event(udc,
+ hw_device_state(ci, 0);
+ if (ci->platdata->notify_event)
+ ci->platdata->notify_event(ci,
CI13XXX_CONTROLLER_STOPPED_EVENT);
- _gadget_stop_activity(&udc->gadget);
+ _gadget_stop_activity(&ci->gadget);
pm_runtime_put_sync(&_gadget->dev);
}
}
static int ci13xxx_wakeup(struct usb_gadget *_gadget)
{
- struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+ struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
unsigned long flags;
int ret = 0;
- spin_lock_irqsave(&udc->lock, flags);
- if (!udc->remote_wakeup) {
+ spin_lock_irqsave(&ci->lock, flags);
+ if (!ci->remote_wakeup) {
ret = -EOPNOTSUPP;
goto out;
}
- if (!hw_read(udc, OP_PORTSC, PORTSC_SUSP)) {
+ if (!hw_read(ci, OP_PORTSC, PORTSC_SUSP)) {
ret = -EINVAL;
goto out;
}
- hw_write(udc, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
+ hw_write(ci, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
out:
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
return ret;
}
static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
{
- struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+ struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget);
- if (udc->transceiver)
- return usb_phy_set_power(udc->transceiver, mA);
+ if (ci->transceiver)
+ return usb_phy_set_power(ci->transceiver, mA);
return -ENOTSUPP;
}
.udc_stop = ci13xxx_stop,
};
-static int init_eps(struct ci13xxx *udc)
+static int init_eps(struct ci13xxx *ci)
{
int retval = 0, i, j;
- for (i = 0; i < udc->hw_ep_max/2; i++)
+ for (i = 0; i < ci->hw_ep_max/2; i++)
for (j = RX; j <= TX; j++) {
- int k = i + j * udc->hw_ep_max/2;
- struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[k];
+ int k = i + j * ci->hw_ep_max/2;
+ struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[k];
scnprintf(mEp->name, sizeof(mEp->name), "ep%i%s", i,
(j == TX) ? "in" : "out");
- mEp->udc = udc;
- mEp->lock = &udc->lock;
- mEp->td_pool = udc->td_pool;
+ mEp->ci = ci;
+ mEp->lock = &ci->lock;
+ mEp->td_pool = ci->td_pool;
mEp->ep.name = mEp->name;
mEp->ep.ops = &usb_ep_ops;
mEp->ep.maxpacket = CTRL_PAYLOAD_MAX;
INIT_LIST_HEAD(&mEp->qh.queue);
- mEp->qh.ptr = dma_pool_alloc(udc->qh_pool, GFP_KERNEL,
+ mEp->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
&mEp->qh.dma);
if (mEp->qh.ptr == NULL)
retval = -ENOMEM;
*/
if (i == 0) {
if (j == RX)
- udc->ep0out = mEp;
+ ci->ep0out = mEp;
else
- udc->ep0in = mEp;
+ ci->ep0in = mEp;
continue;
}
- list_add_tail(&mEp->ep.ep_list, &udc->gadget.ep_list);
+ list_add_tail(&mEp->ep.ep_list, &ci->gadget.ep_list);
}
return retval;
static int ci13xxx_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver)
{
- struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+ struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget);
unsigned long flags;
int retval = -ENOMEM;
return -EINVAL;
- udc->ep0out->ep.desc = &ctrl_endpt_out_desc;
- retval = usb_ep_enable(&udc->ep0out->ep);
+ ci->ep0out->ep.desc = &ctrl_endpt_out_desc;
+ retval = usb_ep_enable(&ci->ep0out->ep);
if (retval)
return retval;
- udc->ep0in->ep.desc = &ctrl_endpt_in_desc;
- retval = usb_ep_enable(&udc->ep0in->ep);
+ ci->ep0in->ep.desc = &ctrl_endpt_in_desc;
+ retval = usb_ep_enable(&ci->ep0in->ep);
if (retval)
return retval;
- spin_lock_irqsave(&udc->lock, flags);
-
- udc->driver = driver;
- pm_runtime_get_sync(&udc->gadget.dev);
- if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) {
- if (udc->vbus_active) {
- if (udc->udc_driver->flags & CI13XXX_REGS_SHARED)
- hw_device_reset(udc, USBMODE_CM_DC);
+ spin_lock_irqsave(&ci->lock, flags);
+
+ ci->driver = driver;
+ pm_runtime_get_sync(&ci->gadget.dev);
+ if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
+ if (ci->vbus_active) {
+ if (ci->platdata->flags & CI13XXX_REGS_SHARED)
+ hw_device_reset(ci, USBMODE_CM_DC);
} else {
- pm_runtime_put_sync(&udc->gadget.dev);
+ pm_runtime_put_sync(&ci->gadget.dev);
goto done;
}
}
- retval = hw_device_state(udc, udc->ep0out->qh.dma);
+ retval = hw_device_state(ci, ci->ep0out->qh.dma);
if (retval)
- pm_runtime_put_sync(&udc->gadget.dev);
+ pm_runtime_put_sync(&ci->gadget.dev);
done:
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
return retval;
}
static int ci13xxx_stop(struct usb_gadget *gadget,
struct usb_gadget_driver *driver)
{
- struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+ struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget);
unsigned long flags;
- spin_lock_irqsave(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
- if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) ||
- udc->vbus_active) {
- hw_device_state(udc, 0);
- if (udc->udc_driver->notify_event)
- udc->udc_driver->notify_event(udc,
+ if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) ||
+ ci->vbus_active) {
+ hw_device_state(ci, 0);
+ if (ci->platdata->notify_event)
+ ci->platdata->notify_event(ci,
CI13XXX_CONTROLLER_STOPPED_EVENT);
- udc->driver = NULL;
- spin_unlock_irqrestore(&udc->lock, flags);
- _gadget_stop_activity(&udc->gadget);
- spin_lock_irqsave(&udc->lock, flags);
- pm_runtime_put(&udc->gadget.dev);
+ ci->driver = NULL;
+ spin_unlock_irqrestore(&ci->lock, flags);
+ _gadget_stop_activity(&ci->gadget);
+ spin_lock_irqsave(&ci->lock, flags);
+ pm_runtime_put(&ci->gadget.dev);
}
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
return 0;
}
* BUS block
*****************************************************************************/
/**
- * udc_irq: udc interrupt handler
+ * udc_irq: ci interrupt handler
*
* This function returns IRQ_HANDLED if the IRQ has been handled
* It locks access to registers
*/
-static irqreturn_t udc_irq(struct ci13xxx *udc)
+static irqreturn_t udc_irq(struct ci13xxx *ci)
{
irqreturn_t retval;
u32 intr;
- if (udc == NULL)
+ if (ci == NULL)
return IRQ_HANDLED;
- spin_lock(&udc->lock);
+ spin_lock(&ci->lock);
- if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
- if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
+ if (ci->platdata->flags & CI13XXX_REGS_SHARED) {
+ if (hw_read(ci, OP_USBMODE, USBMODE_CM) !=
USBMODE_CM_DC) {
- spin_unlock(&udc->lock);
+ spin_unlock(&ci->lock);
return IRQ_NONE;
}
}
- intr = hw_test_and_clear_intr_active(udc);
+ intr = hw_test_and_clear_intr_active(ci);
dbg_interrupt(intr);
if (intr) {
/* order defines priority - do NOT change it */
if (USBi_URI & intr)
- isr_reset_handler(udc);
+ isr_reset_handler(ci);
if (USBi_PCI & intr) {
- udc->gadget.speed = hw_port_is_high_speed(udc) ?
+ ci->gadget.speed = hw_port_is_high_speed(ci) ?
USB_SPEED_HIGH : USB_SPEED_FULL;
- if (udc->suspended && udc->driver->resume) {
- spin_unlock(&udc->lock);
- udc->driver->resume(&udc->gadget);
- spin_lock(&udc->lock);
- udc->suspended = 0;
+ if (ci->suspended && ci->driver->resume) {
+ spin_unlock(&ci->lock);
+ ci->driver->resume(&ci->gadget);
+ spin_lock(&ci->lock);
+ ci->suspended = 0;
}
}
if (USBi_UI & intr)
- isr_tr_complete_handler(udc);
+ isr_tr_complete_handler(ci);
if (USBi_SLI & intr) {
- if (udc->gadget.speed != USB_SPEED_UNKNOWN &&
- udc->driver->suspend) {
- udc->suspended = 1;
- spin_unlock(&udc->lock);
- udc->driver->suspend(&udc->gadget);
- spin_lock(&udc->lock);
+ if (ci->gadget.speed != USB_SPEED_UNKNOWN &&
+ ci->driver->suspend) {
+ ci->suspended = 1;
+ spin_unlock(&ci->lock);
+ ci->driver->suspend(&ci->gadget);
+ spin_lock(&ci->lock);
}
}
retval = IRQ_HANDLED;
} else {
retval = IRQ_NONE;
}
- spin_unlock(&udc->lock);
+ spin_unlock(&ci->lock);
return retval;
}
/**
* udc_start: initialize gadget role
- * @udc: chipidea controller
+ * @ci: chipidea controller
*/
-static int udc_start(struct ci13xxx *udc)
+static int udc_start(struct ci13xxx *ci)
{
- struct device *dev = udc->dev;
+ struct device *dev = ci->dev;
int retval = 0;
- if (!udc)
- return -EINVAL;
-
- spin_lock_init(&udc->lock);
+ spin_lock_init(&ci->lock);
- udc->gadget.ops = &usb_gadget_ops;
- udc->gadget.speed = USB_SPEED_UNKNOWN;
- udc->gadget.max_speed = USB_SPEED_HIGH;
- udc->gadget.is_otg = 0;
- udc->gadget.name = udc->udc_driver->name;
+ ci->gadget.ops = &usb_gadget_ops;
+ ci->gadget.speed = USB_SPEED_UNKNOWN;
+ ci->gadget.max_speed = USB_SPEED_HIGH;
+ ci->gadget.is_otg = 0;
+ ci->gadget.name = ci->platdata->name;
- INIT_LIST_HEAD(&udc->gadget.ep_list);
+ INIT_LIST_HEAD(&ci->gadget.ep_list);
- dev_set_name(&udc->gadget.dev, "gadget");
- udc->gadget.dev.dma_mask = dev->dma_mask;
- udc->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask;
- udc->gadget.dev.parent = dev;
- udc->gadget.dev.release = udc_release;
+ dev_set_name(&ci->gadget.dev, "gadget");
+ ci->gadget.dev.dma_mask = dev->dma_mask;
+ ci->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask;
+ ci->gadget.dev.parent = dev;
+ ci->gadget.dev.release = udc_release;
/* alloc resources */
- udc->qh_pool = dma_pool_create("ci13xxx_qh", dev,
+ ci->qh_pool = dma_pool_create("ci13xxx_qh", dev,
sizeof(struct ci13xxx_qh),
64, CI13XXX_PAGE_SIZE);
- if (udc->qh_pool == NULL)
+ if (ci->qh_pool == NULL)
return -ENOMEM;
- udc->td_pool = dma_pool_create("ci13xxx_td", dev,
+ ci->td_pool = dma_pool_create("ci13xxx_td", dev,
sizeof(struct ci13xxx_td),
64, CI13XXX_PAGE_SIZE);
- if (udc->td_pool == NULL) {
+ if (ci->td_pool == NULL) {
retval = -ENOMEM;
goto free_qh_pool;
}
- retval = init_eps(udc);
+ retval = init_eps(ci);
if (retval)
goto free_pools;
- udc->gadget.ep0 = &udc->ep0in->ep;
+ ci->gadget.ep0 = &ci->ep0in->ep;
- udc->transceiver = usb_get_transceiver();
+ if (ci->global_phy)
+ ci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
- if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
- if (udc->transceiver == NULL) {
+ if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
+ if (ci->transceiver == NULL) {
retval = -ENODEV;
goto free_pools;
}
}
- if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) {
- retval = hw_device_reset(udc, USBMODE_CM_DC);
+ if (!(ci->platdata->flags & CI13XXX_REGS_SHARED)) {
+ retval = hw_device_reset(ci, USBMODE_CM_DC);
if (retval)
goto put_transceiver;
}
- retval = device_register(&udc->gadget.dev);
+ retval = device_register(&ci->gadget.dev);
if (retval) {
- put_device(&udc->gadget.dev);
+ put_device(&ci->gadget.dev);
goto put_transceiver;
}
- retval = dbg_create_files(&udc->gadget.dev);
+ retval = dbg_create_files(&ci->gadget.dev);
if (retval)
goto unreg_device;
- if (udc->transceiver) {
- retval = otg_set_peripheral(udc->transceiver->otg,
- &udc->gadget);
+ if (!IS_ERR_OR_NULL(ci->transceiver)) {
+ retval = otg_set_peripheral(ci->transceiver->otg,
+ &ci->gadget);
if (retval)
goto remove_dbg;
}
- retval = usb_add_gadget_udc(dev, &udc->gadget);
+ retval = usb_add_gadget_udc(dev, &ci->gadget);
if (retval)
goto remove_trans;
- pm_runtime_no_callbacks(&udc->gadget.dev);
- pm_runtime_enable(&udc->gadget.dev);
+ pm_runtime_no_callbacks(&ci->gadget.dev);
+ pm_runtime_enable(&ci->gadget.dev);
return retval;
remove_trans:
- if (udc->transceiver) {
- otg_set_peripheral(udc->transceiver->otg, &udc->gadget);
- usb_put_transceiver(udc->transceiver);
+ if (!IS_ERR_OR_NULL(ci->transceiver)) {
+ otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
+ if (ci->global_phy)
+ usb_put_phy(ci->transceiver);
}
dev_err(dev, "error = %i\n", retval);
remove_dbg:
- dbg_remove_files(&udc->gadget.dev);
+ dbg_remove_files(&ci->gadget.dev);
unreg_device:
- device_unregister(&udc->gadget.dev);
+ device_unregister(&ci->gadget.dev);
put_transceiver:
- if (udc->transceiver)
- usb_put_transceiver(udc->transceiver);
+ if (!IS_ERR_OR_NULL(ci->transceiver) && ci->global_phy)
+ usb_put_phy(ci->transceiver);
free_pools:
- dma_pool_destroy(udc->td_pool);
+ dma_pool_destroy(ci->td_pool);
free_qh_pool:
- dma_pool_destroy(udc->qh_pool);
+ dma_pool_destroy(ci->qh_pool);
return retval;
}
*
* No interrupts active, the IRQ has been released
*/
-static void udc_stop(struct ci13xxx *udc)
+static void udc_stop(struct ci13xxx *ci)
{
int i;
- if (udc == NULL)
+ if (ci == NULL)
return;
- usb_del_gadget_udc(&udc->gadget);
+ usb_del_gadget_udc(&ci->gadget);
- for (i = 0; i < udc->hw_ep_max; i++) {
- struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+ for (i = 0; i < ci->hw_ep_max; i++) {
+ struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i];
- dma_pool_free(udc->qh_pool, mEp->qh.ptr, mEp->qh.dma);
+ dma_pool_free(ci->qh_pool, mEp->qh.ptr, mEp->qh.dma);
}
- dma_pool_destroy(udc->td_pool);
- dma_pool_destroy(udc->qh_pool);
+ dma_pool_destroy(ci->td_pool);
+ dma_pool_destroy(ci->qh_pool);
- if (udc->transceiver) {
- otg_set_peripheral(udc->transceiver->otg, NULL);
- usb_put_transceiver(udc->transceiver);
+ if (!IS_ERR_OR_NULL(ci->transceiver)) {
+ otg_set_peripheral(ci->transceiver->otg, NULL);
+ if (ci->global_phy)
+ usb_put_phy(ci->transceiver);
}
- dbg_remove_files(&udc->gadget.dev);
- device_unregister(&udc->gadget.dev);
+ dbg_remove_files(&ci->gadget.dev);
+ device_unregister(&ci->gadget.dev);
/* my kobject is dynamic, I swear! */
- memset(&udc->gadget, 0, sizeof(udc->gadget));
+ memset(&ci->gadget, 0, sizeof(ci->gadget));
}
/**
case USB_CDC_CALL_MANAGEMENT_TYPE:
call_management_function = buffer[3];
call_interface_num = buffer[4];
- if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
+ if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
break;
default:
#define DRIVER_AUTHOR "Oliver Neukum"
#define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management"
-#define HUAWEI_VENDOR_ID 0x12D1
-
static const struct usb_device_id wdm_ids[] = {
{
.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
.bInterfaceClass = USB_CLASS_COMM,
.bInterfaceSubClass = USB_CDC_SUBCLASS_DMM
},
- {
- /*
- * Huawei E392, E398 and possibly other Qualcomm based modems
- * embed the Qualcomm QMI protocol inside CDC on CDC ECM like
- * control interfaces. Userspace access to this is required
- * to configure the accompanying data interface
- */
- .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
- USB_DEVICE_ID_MATCH_INT_INFO,
- .idVendor = HUAWEI_VENDOR_ID,
- .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
- .bInterfaceSubClass = 1,
- .bInterfaceProtocol = 9, /* NOTE: CDC ECM control interface! */
- },
- {
- /* Vodafone/Huawei K5005 (12d1:14c8) and similar modems */
- .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
- USB_DEVICE_ID_MATCH_INT_INFO,
- .idVendor = HUAWEI_VENDOR_ID,
- .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
- .bInterfaceSubClass = 1,
- .bInterfaceProtocol = 57, /* NOTE: CDC ECM control interface! */
- },
{ }
};
#include <linux/notifier.h>
#include <linux/security.h>
#include <linux/user_namespace.h>
+#include <linux/scatterlist.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
#include <linux/moduleparam.h>
#define USB_MAXBUS 64
#define USB_DEVICE_MAX USB_MAXBUS * 128
+#define USB_SG_SIZE 16384 /* split-size for large txs */
/* Mutual exclusion for removal, open, and release */
DEFINE_MUTEX(usbfs_mutex);
static void free_async(struct async *as)
{
+ int i;
+
put_pid(as->pid);
if (as->cred)
put_cred(as->cred);
+ for (i = 0; i < as->urb->num_sgs; i++) {
+ if (sg_page(&as->urb->sg[i]))
+ kfree(sg_virt(&as->urb->sg[i]));
+ }
+ kfree(as->urb->sg);
kfree(as->urb->transfer_buffer);
kfree(as->urb->setup_packet);
usb_free_urb(as->urb);
}
}
+static void snoop_urb_data(struct urb *urb, unsigned len)
+{
+ int i, size;
+
+ if (!usbfs_snoop)
+ return;
+
+ if (urb->num_sgs == 0) {
+ print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1,
+ urb->transfer_buffer, len, 1);
+ return;
+ }
+
+ for (i = 0; i < urb->num_sgs && len; i++) {
+ size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len;
+ print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1,
+ sg_virt(&urb->sg[i]), size, 1);
+ len -= size;
+ }
+}
+
+static int copy_urb_data_to_user(u8 __user *userbuffer, struct urb *urb)
+{
+ unsigned i, len, size;
+
+ if (urb->number_of_packets > 0) /* Isochronous */
+ len = urb->transfer_buffer_length;
+ else /* Non-Isoc */
+ len = urb->actual_length;
+
+ if (urb->num_sgs == 0) {
+ if (copy_to_user(userbuffer, urb->transfer_buffer, len))
+ return -EFAULT;
+ return 0;
+ }
+
+ for (i = 0; i < urb->num_sgs && len; i++) {
+ size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len;
+ if (copy_to_user(userbuffer, sg_virt(&urb->sg[i]), size))
+ return -EFAULT;
+ userbuffer += size;
+ len -= size;
+ }
+
+ return 0;
+}
+
#define AS_CONTINUATION 1
#define AS_UNLINK 2
}
snoop(&urb->dev->dev, "urb complete\n");
snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
- as->status, COMPLETE,
- ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_OUT) ?
- NULL : urb->transfer_buffer, urb->actual_length);
+ as->status, COMPLETE, NULL, 0);
+ if ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_IN)
+ snoop_urb_data(urb, urb->actual_length);
+
if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
as->status != -ENOENT)
cancel_bulk_urbs(ps, as->bulk_addr);
struct async *as = NULL;
struct usb_ctrlrequest *dr = NULL;
unsigned int u, totlen, isofrmlen;
- int ret, ifnum = -1;
- int is_in;
+ int i, ret, is_in, num_sgs = 0, ifnum = -1;
+ void *buf;
if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP |
USBDEVFS_URB_SHORT_NOT_OK |
goto interrupt_urb;
}
uurb->number_of_packets = 0;
+ num_sgs = DIV_ROUND_UP(uurb->buffer_length, USB_SG_SIZE);
+ if (num_sgs == 1 || num_sgs > ps->dev->bus->sg_tablesize)
+ num_sgs = 0;
break;
case USBDEVFS_URB_TYPE_INTERRUPT:
ret = -ENOMEM;
goto error;
}
- u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length;
+
+ u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length +
+ num_sgs * sizeof(struct scatterlist);
ret = usbfs_increase_memory_usage(u);
if (ret)
goto error;
as->mem_usage = u;
- if (uurb->buffer_length > 0) {
+ if (num_sgs) {
+ as->urb->sg = kmalloc(num_sgs * sizeof(struct scatterlist),
+ GFP_KERNEL);
+ if (!as->urb->sg) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ as->urb->num_sgs = num_sgs;
+ sg_init_table(as->urb->sg, as->urb->num_sgs);
+
+ totlen = uurb->buffer_length;
+ for (i = 0; i < as->urb->num_sgs; i++) {
+ u = (totlen > USB_SG_SIZE) ? USB_SG_SIZE : totlen;
+ buf = kmalloc(u, GFP_KERNEL);
+ if (!buf) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ sg_set_buf(&as->urb->sg[i], buf, u);
+
+ if (!is_in) {
+ if (copy_from_user(buf, uurb->buffer, u)) {
+ ret = -EFAULT;
+ goto error;
+ }
+ }
+ totlen -= u;
+ }
+ } else if (uurb->buffer_length > 0) {
as->urb->transfer_buffer = kmalloc(uurb->buffer_length,
GFP_KERNEL);
if (!as->urb->transfer_buffer) {
ret = -ENOMEM;
goto error;
}
- /* Isochronous input data may end up being discontiguous
- * if some of the packets are short. Clear the buffer so
- * that the gaps don't leak kernel data to userspace.
- */
- if (is_in && uurb->type == USBDEVFS_URB_TYPE_ISO)
+
+ if (!is_in) {
+ if (copy_from_user(as->urb->transfer_buffer,
+ uurb->buffer,
+ uurb->buffer_length)) {
+ ret = -EFAULT;
+ goto error;
+ }
+ } else if (uurb->type == USBDEVFS_URB_TYPE_ISO) {
+ /*
+ * Isochronous input data may end up being
+ * discontiguous if some of the packets are short.
+ * Clear the buffer so that the gaps don't leak
+ * kernel data to userspace.
+ */
memset(as->urb->transfer_buffer, 0,
uurb->buffer_length);
+ }
}
as->urb->dev = ps->dev;
as->urb->pipe = (uurb->type << 30) |
as->pid = get_pid(task_pid(current));
as->cred = get_current_cred();
security_task_getsecid(current, &as->secid);
- if (!is_in && uurb->buffer_length > 0) {
- if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
- uurb->buffer_length)) {
- ret = -EFAULT;
- goto error;
- }
- }
snoop_urb(ps->dev, as->userurb, as->urb->pipe,
as->urb->transfer_buffer_length, 0, SUBMIT,
- is_in ? NULL : as->urb->transfer_buffer,
- uurb->buffer_length);
+ NULL, 0);
+ if (!is_in)
+ snoop_urb_data(as->urb, as->urb->transfer_buffer_length);
+
async_newpending(as);
if (usb_endpoint_xfer_bulk(&ep->desc)) {
unsigned int i;
if (as->userbuffer && urb->actual_length) {
- if (urb->number_of_packets > 0) /* Isochronous */
- i = urb->transfer_buffer_length;
- else /* Non-Isoc */
- i = urb->actual_length;
- if (copy_to_user(as->userbuffer, urb->transfer_buffer, i))
+ if (copy_urb_data_to_user(as->userbuffer, urb))
goto err_out;
}
if (put_user(as->status, &userurb->status))
void __user *addr = as->userurb;
unsigned int i;
- if (as->userbuffer && urb->actual_length)
- if (copy_to_user(as->userbuffer, urb->transfer_buffer,
- urb->actual_length))
+ if (as->userbuffer && urb->actual_length) {
+ if (copy_urb_data_to_user(as->userbuffer, urb))
return -EFAULT;
+ }
if (put_user(as->status, &userurb->status))
return -EFAULT;
if (put_user(urb->actual_length, &userurb->actual_length))
return usb_hub_release_port(ps->dev, portnum, ps);
}
+static int proc_get_capabilities(struct dev_state *ps, void __user *arg)
+{
+ __u32 caps;
+
+ caps = USBDEVFS_CAP_ZERO_PACKET | USBDEVFS_CAP_NO_PACKET_SIZE_LIM;
+ if (!ps->dev->bus->no_stop_on_short)
+ caps |= USBDEVFS_CAP_BULK_CONTINUATION;
+ if (ps->dev->bus->sg_tablesize)
+ caps |= USBDEVFS_CAP_BULK_SCATTER_GATHER;
+
+ if (put_user(caps, (__u32 __user *)arg))
+ return -EFAULT;
+
+ return 0;
+}
+
/*
* NOTE: All requests here that have interface numbers as parameters
* are assuming that somehow the configuration has been prevented from
snoop(&dev->dev, "%s: RELEASE_PORT\n", __func__);
ret = proc_release_port(ps, p);
break;
+ case USBDEVFS_GET_CAPABILITIES:
+ ret = proc_get_capabilities(ps, p);
+ break;
}
usb_unlock_device(dev);
if (ret >= 0)
return error;
err:
+ usb_set_intfdata(intf, NULL);
intf->needs_remote_wakeup = 0;
intf->condition = USB_INTERFACE_UNBOUND;
usb_cancel_queued_reset(intf);
}
/* returns 0 if no match, 1 if match */
-int usb_match_one_id(struct usb_interface *interface,
- const struct usb_device_id *id)
+int usb_match_one_id_intf(struct usb_device *dev,
+ struct usb_host_interface *intf,
+ const struct usb_device_id *id)
{
- struct usb_host_interface *intf;
- struct usb_device *dev;
-
- /* proc_connectinfo in devio.c may call us with id == NULL. */
- if (id == NULL)
- return 0;
-
- intf = interface->cur_altsetting;
- dev = interface_to_usbdev(interface);
-
- if (!usb_match_device(dev, id))
- return 0;
-
- /* The interface class, subclass, and protocol should never be
+ /* The interface class, subclass, protocol and number should never be
* checked for a match if the device class is Vendor Specific,
* unless the match record specifies the Vendor ID. */
if (dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC &&
!(id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
(id->match_flags & (USB_DEVICE_ID_MATCH_INT_CLASS |
USB_DEVICE_ID_MATCH_INT_SUBCLASS |
- USB_DEVICE_ID_MATCH_INT_PROTOCOL)))
+ USB_DEVICE_ID_MATCH_INT_PROTOCOL |
+ USB_DEVICE_ID_MATCH_INT_NUMBER)))
return 0;
if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_CLASS) &&
(id->bInterfaceProtocol != intf->desc.bInterfaceProtocol))
return 0;
+ if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) &&
+ (id->bInterfaceNumber != intf->desc.bInterfaceNumber))
+ return 0;
+
return 1;
}
+
+/* returns 0 if no match, 1 if match */
+int usb_match_one_id(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct usb_host_interface *intf;
+ struct usb_device *dev;
+
+ /* proc_connectinfo in devio.c may call us with id == NULL. */
+ if (id == NULL)
+ return 0;
+
+ intf = interface->cur_altsetting;
+ dev = interface_to_usbdev(interface);
+
+ if (!usb_match_device(dev, id))
+ return 0;
+
+ return usb_match_one_id_intf(dev, intf, id);
+}
EXPORT_SYMBOL_GPL(usb_match_one_id);
/**
}
kref_init(&usb_class->kref);
- usb_class->class = class_create(THIS_MODULE, "usb");
+ usb_class->class = class_create(THIS_MODULE, "usbmisc");
if (IS_ERR(usb_class->class)) {
result = IS_ERR(usb_class->class);
printk(KERN_ERR "class_create failed for usb devices\n");
&& !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
if (hcd->self.uses_dma) {
if (urb->num_sgs) {
- int n = dma_map_sg(
+ int n;
+
+ /* We don't support sg for isoc transfers ! */
+ if (usb_endpoint_xfer_isoc(&urb->ep->desc)) {
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ n = dma_map_sg(
hcd->self.controller,
urb->sg,
urb->num_sgs,
#include <linux/usb.h>
#include <linux/usbdevice_fs.h>
#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
#include <linux/usb/quirks.h>
#include <linux/kthread.h>
#include <linux/mutex.h>
u8 indicator[USB_MAXCHILDREN];
struct delayed_work leds;
struct delayed_work init_work;
- void **port_owners;
+ struct dev_state **port_owners;
};
static inline int hub_is_superspeed(struct usb_device *hdev)
hdev->children = kzalloc(hdev->maxchild *
sizeof(struct usb_device *), GFP_KERNEL);
- hub->port_owners = kzalloc(hdev->maxchild * sizeof(void *), GFP_KERNEL);
+ hub->port_owners = kzalloc(hdev->maxchild * sizeof(struct dev_state *),
+ GFP_KERNEL);
if (!hdev->children || !hub->port_owners) {
ret = -ENOMEM;
goto fail;
* to one of these "claimed" ports, the program will "own" the device.
*/
static int find_port_owner(struct usb_device *hdev, unsigned port1,
- void ***ppowner)
+ struct dev_state ***ppowner)
{
if (hdev->state == USB_STATE_NOTATTACHED)
return -ENODEV;
}
/* In the following three functions, the caller must hold hdev's lock */
-int usb_hub_claim_port(struct usb_device *hdev, unsigned port1, void *owner)
+int usb_hub_claim_port(struct usb_device *hdev, unsigned port1,
+ struct dev_state *owner)
{
int rc;
- void **powner;
+ struct dev_state **powner;
rc = find_port_owner(hdev, port1, &powner);
if (rc)
return rc;
}
-int usb_hub_release_port(struct usb_device *hdev, unsigned port1, void *owner)
+int usb_hub_release_port(struct usb_device *hdev, unsigned port1,
+ struct dev_state *owner)
{
int rc;
- void **powner;
+ struct dev_state **powner;
rc = find_port_owner(hdev, port1, &powner);
if (rc)
return rc;
}
-void usb_hub_release_all_ports(struct usb_device *hdev, void *owner)
+void usb_hub_release_all_ports(struct usb_device *hdev, struct dev_state *owner)
{
int n;
- void **powner;
+ struct dev_state **powner;
n = find_port_owner(hdev, 1, &powner);
if (n == 0) {
if (err < 0) {
dev_err(&udev->dev, "can't read configurations, error %d\n",
err);
- goto fail;
+ return err;
}
}
if (udev->wusb == 1 && udev->authorized == 0) {
udev->serial = usb_cache_string(udev, udev->descriptor.iSerialNumber);
}
err = usb_enumerate_device_otg(udev);
-fail:
- return err;
+ if (err < 0)
+ return err;
+
+ usb_detect_interface_quirks(udev);
+
+ return 0;
}
static void set_usb_port_removable(struct usb_device *udev)
return status;
}
+int usb_disable_ltm(struct usb_device *udev)
+{
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
+ /* Check if the roothub and device supports LTM. */
+ if (!usb_device_supports_ltm(hcd->self.root_hub) ||
+ !usb_device_supports_ltm(udev))
+ return 0;
+
+ /* Clear Feature LTM Enable can only be sent if the device is
+ * configured.
+ */
+ if (!udev->actconfig)
+ return 0;
+
+ return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE,
+ USB_DEVICE_LTM_ENABLE, 0, NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
+}
+EXPORT_SYMBOL_GPL(usb_disable_ltm);
+
+void usb_enable_ltm(struct usb_device *udev)
+{
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
+ /* Check if the roothub and device supports LTM. */
+ if (!usb_device_supports_ltm(hcd->self.root_hub) ||
+ !usb_device_supports_ltm(udev))
+ return;
+
+ /* Set Feature LTM Enable can only be sent if the device is
+ * configured.
+ */
+ if (!udev->actconfig)
+ return;
+
+ usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ USB_REQ_SET_FEATURE, USB_RECIP_DEVICE,
+ USB_DEVICE_LTM_ENABLE, 0, NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
+}
+EXPORT_SYMBOL_GPL(usb_enable_ltm);
+
#ifdef CONFIG_USB_SUSPEND
/*
if (udev->usb2_hw_lpm_enabled == 1)
usb_set_usb2_hardware_lpm(udev, 0);
+ if (usb_disable_ltm(udev)) {
+ dev_err(&udev->dev, "%s Failed to disable LTM before suspend\n.",
+ __func__);
+ return -ENOMEM;
+ }
if (usb_unlocked_disable_lpm(udev)) {
dev_err(&udev->dev, "%s Failed to disable LPM before suspend\n.",
__func__);
if (udev->usb2_hw_lpm_capable == 1)
usb_set_usb2_hardware_lpm(udev, 1);
- /* Try to enable USB3 LPM again */
+ /* Try to enable USB3 LTM and LPM again */
+ usb_enable_ltm(udev);
usb_unlocked_enable_lpm(udev);
/* System sleep transitions should never fail */
if (udev->usb2_hw_lpm_capable == 1)
usb_set_usb2_hardware_lpm(udev, 1);
- /* Try to enable USB3 LPM */
+ /* Try to enable USB3 LTM and LPM */
+ usb_enable_ltm(udev);
usb_unlocked_enable_lpm(udev);
}
void usb_unlocked_enable_lpm(struct usb_device *udev) { }
EXPORT_SYMBOL_GPL(usb_unlocked_enable_lpm);
+
+int usb_disable_ltm(struct usb_device *udev)
+{
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usb_disable_ltm);
+
+void usb_enable_ltm(struct usb_device *udev) { }
+EXPORT_SYMBOL_GPL(usb_enable_ltm);
#endif
}
}
+ if (hcd->phy && !hdev->parent) {
+ if (portstatus & USB_PORT_STAT_CONNECTION)
+ usb_phy_notify_connect(hcd->phy, port1);
+ else
+ usb_phy_notify_disconnect(hcd->phy, port1);
+ }
+
/* Return now if debouncing failed or nothing is connected or
* the device was "removed".
*/
}
parent_hub = hdev_to_hub(parent_hdev);
+ /* Disable LPM and LTM while we reset the device and reinstall the alt
+ * settings. Device-initiated LPM settings, and system exit latency
+ * settings are cleared when the device is reset, so we have to set
+ * them up again.
+ */
+ ret = usb_unlocked_disable_lpm(udev);
+ if (ret) {
+ dev_err(&udev->dev, "%s Failed to disable LPM\n.", __func__);
+ goto re_enumerate;
+ }
+ ret = usb_disable_ltm(udev);
+ if (ret) {
+ dev_err(&udev->dev, "%s Failed to disable LTM\n.",
+ __func__);
+ goto re_enumerate;
+ }
+
set_bit(port1, parent_hub->busy_bits);
for (i = 0; i < SET_CONFIG_TRIES; ++i) {
goto done;
mutex_lock(hcd->bandwidth_mutex);
- /* Disable LPM while we reset the device and reinstall the alt settings.
- * Device-initiated LPM settings, and system exit latency settings are
- * cleared when the device is reset, so we have to set them up again.
- */
- ret = usb_disable_lpm(udev);
- if (ret) {
- dev_err(&udev->dev, "%s Failed to disable LPM\n.", __func__);
- mutex_unlock(hcd->bandwidth_mutex);
- goto done;
- }
ret = usb_hcd_alloc_bandwidth(udev, udev->actconfig, NULL, NULL);
if (ret < 0) {
dev_warn(&udev->dev,
"Busted HC? Not enough HCD resources for "
"old configuration.\n");
- usb_enable_lpm(udev);
mutex_unlock(hcd->bandwidth_mutex);
goto re_enumerate;
}
dev_err(&udev->dev,
"can't restore configuration #%d (error=%d)\n",
udev->actconfig->desc.bConfigurationValue, ret);
- usb_enable_lpm(udev);
mutex_unlock(hcd->bandwidth_mutex);
goto re_enumerate;
}
desc->bInterfaceNumber,
desc->bAlternateSetting,
ret);
- usb_unlocked_enable_lpm(udev);
goto re_enumerate;
}
}
- /* Now that the alt settings are re-installed, enable LPM. */
- usb_unlocked_enable_lpm(udev);
done:
+ /* Now that the alt settings are re-installed, enable LTM and LPM. */
+ usb_unlocked_enable_lpm(udev);
+ usb_enable_ltm(udev);
return 0;
re_enumerate:
+ /* LPM state doesn't matter when we're about to destroy the device. */
hub_port_logical_disconnect(parent_hub, port1);
return -ENODEV;
}
put_device(&dev->actconfig->interface[i]->dev);
dev->actconfig->interface[i] = NULL;
}
+ usb_unlocked_disable_lpm(dev);
+ usb_disable_ltm(dev);
dev->actconfig = NULL;
if (dev->state == USB_STATE_CONFIGURED)
usb_set_device_state(dev, USB_STATE_ADDRESS);
if (add_uevent_var(env,
"MODALIAS=usb:"
- "v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X",
+ "v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02Xin%02X",
le16_to_cpu(usb_dev->descriptor.idVendor),
le16_to_cpu(usb_dev->descriptor.idProduct),
le16_to_cpu(usb_dev->descriptor.bcdDevice),
usb_dev->descriptor.bDeviceProtocol,
alt->desc.bInterfaceClass,
alt->desc.bInterfaceSubClass,
- alt->desc.bInterfaceProtocol))
+ alt->desc.bInterfaceProtocol,
+ alt->desc.bInterfaceNumber))
return -ENOMEM;
return 0;
* installed, so that the xHCI driver can recalculate the U1/U2
* timeouts.
*/
- if (usb_disable_lpm(dev)) {
+ if (dev->actconfig && usb_disable_lpm(dev)) {
dev_err(&dev->dev, "%s Failed to disable LPM\n.", __func__);
mutex_unlock(hcd->bandwidth_mutex);
return -ENOMEM;
}
ret = usb_hcd_alloc_bandwidth(dev, cp, NULL, NULL);
if (ret < 0) {
- usb_enable_lpm(dev);
+ if (dev->actconfig)
+ usb_enable_lpm(dev);
mutex_unlock(hcd->bandwidth_mutex);
usb_autosuspend_device(dev);
goto free_interfaces;
if (!cp) {
usb_set_device_state(dev, USB_STATE_ADDRESS);
usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL);
- usb_enable_lpm(dev);
+ /* Leave LPM disabled while the device is unconfigured. */
mutex_unlock(hcd->bandwidth_mutex);
usb_autosuspend_device(dev);
goto free_interfaces;
/* Now that the interfaces are installed, re-enable LPM. */
usb_unlocked_enable_lpm(dev);
+ /* Enable LTM if it was turned off by usb_disable_device. */
+ usb_enable_ltm(dev);
/* Now that all the interfaces are set up, register them
* to trigger binding of drivers to interfaces. probe()
#include <linux/usb/quirks.h>
#include "usb.h"
-/* List of quirky USB devices. Please keep this list ordered by:
+/* Lists of quirky USB devices, split in device quirks and interface quirks.
+ * Device quirks are applied at the very beginning of the enumeration process,
+ * right after reading the device descriptor. They can thus only match on device
+ * information.
+ *
+ * Interface quirks are applied after reading all the configuration descriptors.
+ * They can match on both device and interface information.
+ *
+ * Note that the DELAY_INIT and HONOR_BNUMINTERFACES quirks do not make sense as
+ * interface quirks, as they only influence the enumeration process which is run
+ * before processing the interface quirks.
+ *
+ * Please keep the lists ordered by:
* 1) Vendor ID
* 2) Product ID
* 3) Class ID
- *
- * as we want specific devices to be overridden first, and only after that, any
- * class specific quirks.
- *
- * Right now the logic aborts if it finds a valid device in the table, we might
- * want to change that in the future if it turns out that a whole class of
- * devices is broken...
*/
static const struct usb_device_id usb_quirk_list[] = {
/* CBM - Flash disk */
/* Creative SB Audigy 2 NX */
{ USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
- /* Logitech Webcam C200 */
- { USB_DEVICE(0x046d, 0x0802), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Webcam C250 */
- { USB_DEVICE(0x046d, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Webcam C300 */
- { USB_DEVICE(0x046d, 0x0805), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Webcam B/C500 */
- { USB_DEVICE(0x046d, 0x0807), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Webcam C600 */
- { USB_DEVICE(0x046d, 0x0808), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Webcam Pro 9000 */
- { USB_DEVICE(0x046d, 0x0809), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Logitech Quickcam Fusion */
+ { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME },
- /* Logitech Webcam C905 */
- { USB_DEVICE(0x046d, 0x080a), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Logitech Quickcam Orbit MP */
+ { USB_DEVICE(0x046d, 0x08c2), .driver_info = USB_QUIRK_RESET_RESUME },
- /* Logitech Webcam C210 */
- { USB_DEVICE(0x046d, 0x0819), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Logitech Quickcam Pro for Notebook */
+ { USB_DEVICE(0x046d, 0x08c3), .driver_info = USB_QUIRK_RESET_RESUME },
- /* Logitech Webcam C260 */
- { USB_DEVICE(0x046d, 0x081a), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Logitech Quickcam Pro 5000 */
+ { USB_DEVICE(0x046d, 0x08c5), .driver_info = USB_QUIRK_RESET_RESUME },
- /* Logitech Webcam C310 */
- { USB_DEVICE(0x046d, 0x081b), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Logitech Quickcam OEM Dell Notebook */
+ { USB_DEVICE(0x046d, 0x08c6), .driver_info = USB_QUIRK_RESET_RESUME },
- /* Logitech Webcam C910 */
- { USB_DEVICE(0x046d, 0x0821), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Webcam C160 */
- { USB_DEVICE(0x046d, 0x0824), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Webcam C270 */
- { USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Quickcam Pro 9000 */
- { USB_DEVICE(0x046d, 0x0990), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Quickcam E3500 */
- { USB_DEVICE(0x046d, 0x09a4), .driver_info = USB_QUIRK_RESET_RESUME },
-
- /* Logitech Quickcam Vision Pro */
- { USB_DEVICE(0x046d, 0x09a6), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Logitech Quickcam OEM Cisco VT Camera II */
+ { USB_DEVICE(0x046d, 0x08c7), .driver_info = USB_QUIRK_RESET_RESUME },
/* Logitech Harmony 700-series */
{ USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT },
{ } /* terminating entry must be last */
};
-static const struct usb_device_id *find_id(struct usb_device *udev)
+static const struct usb_device_id usb_interface_quirk_list[] = {
+ /* Logitech UVC Cameras */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0),
+ .driver_info = USB_QUIRK_RESET_RESUME },
+
+ { } /* terminating entry must be last */
+};
+
+static bool usb_match_any_interface(struct usb_device *udev,
+ const struct usb_device_id *id)
{
- const struct usb_device_id *id = usb_quirk_list;
+ unsigned int i;
- for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass ||
- id->driver_info; id++) {
- if (usb_match_device(udev, id))
- return id;
+ for (i = 0; i < udev->descriptor.bNumConfigurations; ++i) {
+ struct usb_host_config *cfg = &udev->config[i];
+ unsigned int j;
+
+ for (j = 0; j < cfg->desc.bNumInterfaces; ++j) {
+ struct usb_interface_cache *cache;
+ struct usb_host_interface *intf;
+
+ cache = cfg->intf_cache[j];
+ if (cache->num_altsetting == 0)
+ continue;
+
+ intf = &cache->altsetting[0];
+ if (usb_match_one_id_intf(udev, intf, id))
+ return true;
+ }
+ }
+
+ return false;
+}
+
+static u32 __usb_detect_quirks(struct usb_device *udev,
+ const struct usb_device_id *id)
+{
+ u32 quirks = 0;
+
+ for (; id->match_flags; id++) {
+ if (!usb_match_device(udev, id))
+ continue;
+
+ if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_INFO) &&
+ !usb_match_any_interface(udev, id))
+ continue;
+
+ quirks |= (u32)(id->driver_info);
}
- return NULL;
+
+ return quirks;
}
/*
*/
void usb_detect_quirks(struct usb_device *udev)
{
- const struct usb_device_id *id = usb_quirk_list;
-
- id = find_id(udev);
- if (id)
- udev->quirks = (u32)(id->driver_info);
+ udev->quirks = __usb_detect_quirks(udev, usb_quirk_list);
if (udev->quirks)
dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
- udev->quirks);
+ udev->quirks);
/* For the present, all devices default to USB-PERSIST enabled */
#if 0 /* was: #ifdef CONFIG_PM */
udev->persist_enabled = 1;
#endif /* CONFIG_PM */
}
+
+void usb_detect_interface_quirks(struct usb_device *udev)
+{
+ u32 quirks;
+
+ quirks = __usb_detect_quirks(udev, usb_interface_quirk_list);
+ if (quirks == 0)
+ return;
+
+ dev_dbg(&udev->dev, "USB interface quirks for this device: %x\n",
+ quirks);
+ udev->quirks |= quirks;
+}
}
static DEVICE_ATTR(removable, S_IRUGO, show_removable, NULL);
+static ssize_t
+show_ltm_capable(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (usb_device_supports_ltm(to_usb_device(dev)))
+ return sprintf(buf, "%s\n", "yes");
+ return sprintf(buf, "%s\n", "no");
+}
+static DEVICE_ATTR(ltm_capable, S_IRUGO, show_ltm_capable, NULL);
+
#ifdef CONFIG_PM
static ssize_t
&dev_attr_authorized.attr,
&dev_attr_remove.attr,
&dev_attr_removable.attr,
+ &dev_attr_ltm_capable.attr,
NULL,
};
static struct attribute_group dev_attr_grp = {
alt = intf->cur_altsetting;
return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02X"
- "ic%02Xisc%02Xip%02X\n",
+ "ic%02Xisc%02Xip%02Xin%02X\n",
le16_to_cpu(udev->descriptor.idVendor),
le16_to_cpu(udev->descriptor.idProduct),
le16_to_cpu(udev->descriptor.bcdDevice),
udev->descriptor.bDeviceProtocol,
alt->desc.bInterfaceClass,
alt->desc.bInterfaceSubClass,
- alt->desc.bInterfaceProtocol);
+ alt->desc.bInterfaceProtocol,
+ alt->desc.bInterfaceNumber);
}
static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);
dev->dev.dma_mask = bus->controller->dma_mask;
set_dev_node(&dev->dev, dev_to_node(bus->controller));
dev->state = USB_STATE_ATTACHED;
+ dev->lpm_disable_count = 1;
atomic_set(&dev->urbnum, 0);
INIT_LIST_HEAD(&dev->ep0.urb_list);
#include <linux/pm.h>
+struct dev_state;
+
/* Functions local to drivers/usb/core/ */
extern int usb_create_sysfs_dev_files(struct usb_device *dev);
extern int usb_deauthorize_device(struct usb_device *);
extern int usb_authorize_device(struct usb_device *);
extern void usb_detect_quirks(struct usb_device *udev);
+extern void usb_detect_interface_quirks(struct usb_device *udev);
extern int usb_remove_device(struct usb_device *udev);
extern int usb_get_device_descriptor(struct usb_device *dev,
extern int usb_choose_configuration(struct usb_device *udev);
extern void usb_kick_khubd(struct usb_device *dev);
+extern int usb_match_one_id_intf(struct usb_device *dev,
+ struct usb_host_interface *intf,
+ const struct usb_device_id *id);
extern int usb_match_device(struct usb_device *dev,
const struct usb_device_id *id);
extern void usb_forced_unbind_intf(struct usb_interface *intf);
extern void usb_rebind_intf(struct usb_interface *intf);
extern int usb_hub_claim_port(struct usb_device *hdev, unsigned port,
- void *owner);
+ struct dev_state *owner);
extern int usb_hub_release_port(struct usb_device *hdev, unsigned port,
- void *owner);
-extern void usb_hub_release_all_ports(struct usb_device *hdev, void *owner);
+ struct dev_state *owner);
+extern void usb_hub_release_all_ports(struct usb_device *hdev,
+ struct dev_state *owner);
extern bool usb_device_is_owned(struct usb_device *udev);
extern int usb_hub_init(void);
reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+ mdelay(100);
+
/* After PHYs are stable we can take Core out of reset state */
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
reg &= ~DWC3_GCTL_CORESOFTRESET;
*
* Returns 0 on success otherwise negative errno.
*/
-static int __devinit dwc3_event_buffers_setup(struct dwc3 *dwc)
+static int dwc3_event_buffers_setup(struct dwc3 *dwc)
{
struct dwc3_event_buffer *evt;
int n;
evt->buf, (unsigned long long) evt->dma,
evt->length);
+ evt->lpos = 0;
+
dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n),
lower_32_bits(evt->dma));
dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n),
for (n = 0; n < dwc->num_event_buffers; n++) {
evt = dwc->ev_buffs[n];
+
+ evt->lpos = 0;
+
dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0);
dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0);
dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 0);
}
dwc->revision = reg;
- dwc3_core_soft_reset(dwc);
-
/* issue device SoftReset too */
timeout = jiffies + msecs_to_jiffies(500);
dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST);
cpu_relax();
} while (true);
+ dwc3_core_soft_reset(dwc);
+
dwc3_cache_hwparams(dwc);
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
#define DWC3_DEVICE_EVENT_CONNECT_DONE 2
#define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE 3
#define DWC3_DEVICE_EVENT_WAKEUP 4
+#define DWC3_DEVICE_EVENT_HIBER_REQ 5
#define DWC3_DEVICE_EVENT_EOPF 6
#define DWC3_DEVICE_EVENT_SOF 7
#define DWC3_DEVICE_EVENT_ERRATIC_ERROR 9
#define DWC3_GCTL_PRTCAP_DEVICE 2
#define DWC3_GCTL_PRTCAP_OTG 3
-#define DWC3_GCTL_CORESOFTRESET (1 << 11)
-#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
-#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
-#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
-#define DWC3_GCTL_DSBLCLKGTNG (1 << 0)
+#define DWC3_GCTL_CORESOFTRESET (1 << 11)
+#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
+#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
+#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
+#define DWC3_GCTL_GBLHIBERNATIONEN (1 << 1)
+#define DWC3_GCTL_DSBLCLKGTNG (1 << 0)
/* Global USB2 PHY Configuration Register */
-#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
-#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6)
+#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
+#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6)
/* Global USB3 PIPE Control Register */
-#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
-#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
+#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
+#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
/* Global TX Fifo Size Register */
-#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff)
-#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000)
+#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff)
+#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000)
/* Global HWPARAMS1 Register */
#define DWC3_GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24)
#define DWC3_GHWPARAMS1_EN_PWROPT_NO 0
#define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1
+#define DWC3_GHWPARAMS1_EN_PWROPT_HIB 2
+#define DWC3_GHWPARAMS1_PWROPT(n) ((n) << 24)
+#define DWC3_GHWPARAMS1_PWROPT_MASK DWC3_GHWPARAMS1_PWROPT(3)
+
+/* Global HWPARAMS4 Register */
+#define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n) (((n) & (0x0f << 13)) >> 13)
+#define DWC3_MAX_HIBER_SCRATCHBUFS 15
/* Device Configuration Register */
#define DWC3_DCFG_LPM_CAP (1 << 22)
#define DWC3_DCFG_LOWSPEED (2 << 0)
#define DWC3_DCFG_FULLSPEED1 (3 << 0)
+#define DWC3_DCFG_LPM_CAP (1 << 22)
+
/* Device Control Register */
#define DWC3_DCTL_RUN_STOP (1 << 31)
#define DWC3_DCTL_CSFTRST (1 << 30)
#define DWC3_DCTL_LSFTRST (1 << 29)
#define DWC3_DCTL_HIRD_THRES_MASK (0x1f << 24)
-#define DWC3_DCTL_HIRD_THRES(n) (((n) & DWC3_DCTL_HIRD_THRES_MASK) >> 24)
+#define DWC3_DCTL_HIRD_THRES(n) ((n) << 24)
#define DWC3_DCTL_APPL1RES (1 << 23)
-#define DWC3_DCTL_TRGTULST_MASK (0x0f << 17)
-#define DWC3_DCTL_TRGTULST(n) ((n) << 17)
-
-#define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2))
-#define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3))
-#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4))
-#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5))
-#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6))
+/* These apply for core versions 1.87a and earlier */
+#define DWC3_DCTL_TRGTULST_MASK (0x0f << 17)
+#define DWC3_DCTL_TRGTULST(n) ((n) << 17)
+#define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2))
+#define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3))
+#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4))
+#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5))
+#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6))
+
+/* These apply for core versions 1.94a and later */
+#define DWC3_DCTL_KEEP_CONNECT (1 << 19)
+#define DWC3_DCTL_L1_HIBER_EN (1 << 18)
+#define DWC3_DCTL_CRS (1 << 17)
+#define DWC3_DCTL_CSS (1 << 16)
#define DWC3_DCTL_INITU2ENA (1 << 12)
#define DWC3_DCTL_ACCEPTU2ENA (1 << 11)
#define DWC3_DEVTEN_ERRTICERREN (1 << 9)
#define DWC3_DEVTEN_SOFEN (1 << 7)
#define DWC3_DEVTEN_EOPFEN (1 << 6)
+#define DWC3_DEVTEN_HIBERNATIONREQEVTEN (1 << 5)
#define DWC3_DEVTEN_WKUPEVTEN (1 << 4)
#define DWC3_DEVTEN_ULSTCNGEN (1 << 3)
#define DWC3_DEVTEN_CONNECTDONEEN (1 << 2)
#define DWC3_DEVTEN_DISCONNEVTEN (1 << 0)
/* Device Status Register */
+#define DWC3_DSTS_DCNRD (1 << 29)
+
+/* This applies for core versions 1.87a and earlier */
#define DWC3_DSTS_PWRUPREQ (1 << 24)
+
+/* These apply for core versions 1.94a and later */
+#define DWC3_DSTS_RSS (1 << 25)
+#define DWC3_DSTS_SSS (1 << 24)
+
#define DWC3_DSTS_COREIDLE (1 << 23)
#define DWC3_DSTS_DEVCTRLHLT (1 << 22)
#define DWC3_DSTS_RXFIFOEMPTY (1 << 17)
-#define DWC3_DSTS_SOFFN_MASK (0x3ff << 3)
+#define DWC3_DSTS_SOFFN_MASK (0x3fff << 3)
#define DWC3_DSTS_SOFFN(n) (((n) & DWC3_DSTS_SOFFN_MASK) >> 3)
#define DWC3_DSTS_CONNECTSPD (7 << 0)
#define DWC3_DGCMD_SET_LMP 0x01
#define DWC3_DGCMD_SET_PERIODIC_PAR 0x02
#define DWC3_DGCMD_XMIT_FUNCTION 0x03
+
+/* These apply for core versions 1.94a and later */
+#define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO 0x04
+#define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI 0x05
+
#define DWC3_DGCMD_SELECTED_FIFO_FLUSH 0x09
#define DWC3_DGCMD_ALL_FIFO_FLUSH 0x0a
#define DWC3_DGCMD_SET_ENDPOINT_NRDY 0x0c
#define DWC3_DGCMD_STATUS(n) (((n) >> 15) & 1)
#define DWC3_DGCMD_CMDACT (1 << 10)
+#define DWC3_DGCMD_CMDIOC (1 << 8)
+
+/* Device Generic Command Parameter Register */
+#define DWC3_DGCMDPAR_FORCE_LINKPM_ACCEPT (1 << 0)
+#define DWC3_DGCMDPAR_FIFO_NUM(n) ((n) << 0)
+#define DWC3_DGCMDPAR_RX_FIFO (0 << 5)
+#define DWC3_DGCMDPAR_TX_FIFO (1 << 5)
+#define DWC3_DGCMDPAR_LOOPBACK_DIS (0 << 0)
+#define DWC3_DGCMDPAR_LOOPBACK_ENA (1 << 0)
/* Device Endpoint Command Register */
#define DWC3_DEPCMD_PARAM_SHIFT 16
#define DWC3_DEPCMD_STARTTRANSFER (0x06 << 0)
#define DWC3_DEPCMD_CLEARSTALL (0x05 << 0)
#define DWC3_DEPCMD_SETSTALL (0x04 << 0)
+/* This applies for core versions 1.90a and earlier */
#define DWC3_DEPCMD_GETSEQNUMBER (0x03 << 0)
+/* This applies for core versions 1.94a and later */
+#define DWC3_DEPCMD_GETEPSTATE (0x03 << 0)
#define DWC3_DEPCMD_SETTRANSFRESOURCE (0x02 << 0)
#define DWC3_DEPCMD_SETEPCONFIG (0x01 << 0)
* @current_trb: index of current used trb
* @number: endpoint number (1 - 15)
* @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK
- * @res_trans_idx: Resource transfer index
+ * @resource_index: Resource transfer index
+ * @current_uf: Current uf received through last event parameter
* @interval: the intervall on which the ISOC transfer is started
* @name: a human readable name e.g. ep1out-bulk
* @direction: true for TX, false for RX
#define DWC3_EP_WEDGE (1 << 2)
#define DWC3_EP_BUSY (1 << 4)
#define DWC3_EP_PENDING_REQUEST (1 << 5)
+#define DWC3_EP_MISSED_ISOC (1 << 6)
/* This last one is specific to EP0 */
#define DWC3_EP0_DIR_IN (1 << 31)
u8 number;
u8 type;
- u8 res_trans_idx;
+ u8 resource_index;
+ u16 current_uf;
u32 interval;
char name[20];
DWC3_LINK_STATE_HRESET = 0x09,
DWC3_LINK_STATE_CMPLY = 0x0a,
DWC3_LINK_STATE_LPBK = 0x0b,
+ DWC3_LINK_STATE_RESET = 0x0e,
+ DWC3_LINK_STATE_RESUME = 0x0f,
DWC3_LINK_STATE_MASK = 0x0f,
};
#define DWC3_TRB_SIZE_MASK (0x00ffffff)
#define DWC3_TRB_SIZE_LENGTH(n) ((n) & DWC3_TRB_SIZE_MASK)
#define DWC3_TRB_SIZE_PCM1(n) (((n) & 0x03) << 24)
-#define DWC3_TRB_SIZE_TRBSTS(n) (((n) & (0x0f << 28) >> 28))
+#define DWC3_TRB_SIZE_TRBSTS(n) (((n) & (0x0f << 28)) >> 28)
#define DWC3_TRBSTS_OK 0
#define DWC3_TRBSTS_MISSED_ISOC 1
#define DWC3_TRBSTS_SETUP_PENDING 2
+#define DWC3_TRB_STS_XFER_IN_PROG 4
/* TRB Control */
#define DWC3_TRB_CTRL_HWO (1 << 0)
unsigned queued:1;
};
+/*
+ * struct dwc3_scratchpad_array - hibernation scratchpad array
+ * (format defined by hw)
+ */
+struct dwc3_scratchpad_array {
+ __le64 dma_adr[DWC3_MAX_HIBER_SCRATCHBUFS];
+};
+
/**
* struct dwc3 - representation of our controller
* @ctrl_req: usb control request which is used for ep0
#define DWC3_REVISION_180A 0x5533180a
#define DWC3_REVISION_183A 0x5533183a
#define DWC3_REVISION_185A 0x5533185a
+#define DWC3_REVISION_187A 0x5533187a
#define DWC3_REVISION_188A 0x5533188a
#define DWC3_REVISION_190A 0x5533190a
+#define DWC3_REVISION_194A 0x5533194a
#define DWC3_REVISION_200A 0x5533200a
#define DWC3_REVISION_202A 0x5533202a
#define DWC3_REVISION_210A 0x5533210a
#include <linux/platform_device.h>
#include <linux/platform_data/dwc3-exynos.h>
#include <linux/dma-mapping.h>
-#include <linux/module.h>
#include <linux/clk.h>
#include "core.h"
#include "gadget.h"
#include "io.h"
-static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum);
+static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep);
+static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
+ struct dwc3_ep *dep, struct dwc3_request *req);
static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
{
}
dep->flags |= DWC3_EP_BUSY;
- dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc,
+ dep->resource_index = dwc3_gadget_ep_get_transfer_index(dwc,
dep->number);
dwc->ep0_next_event = DWC3_EP0_COMPLETE;
return 0;
}
- ret = dwc3_ep0_start_trans(dwc, direction,
- req->request.dma, req->request.length,
- DWC3_TRBCTL_CONTROL_DATA);
+ __dwc3_ep0_do_control_data(dwc, dwc->eps[direction], req);
+
dep->flags &= ~(DWC3_EP_PENDING_REQUEST |
DWC3_EP0_DIR_IN);
} else if (dwc->delayed_status) {
dwc->delayed_status = false;
if (dwc->ep0state == EP0_STATUS_PHASE)
- dwc3_ep0_do_control_status(dwc, 1);
+ __dwc3_ep0_do_control_status(dwc, dwc->eps[1]);
else
dev_dbg(dwc->dev, "too early for delayed status\n");
}
dwc3_ep0_out_start(dwc);
}
+int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
+{
+ struct dwc3_ep *dep = to_dwc3_ep(ep);
+ struct dwc3 *dwc = dep->dwc;
+
+ dwc3_ep0_stall_and_restart(dwc);
+
+ return 0;
+}
+
void dwc3_ep0_out_start(struct dwc3 *dwc)
{
int ret;
{
u32 cfg;
int ret;
+ u32 reg;
dwc->start_config_issued = false;
cfg = le16_to_cpu(ctrl->wValue);
/* if the cfg matches and the cfg is non zero */
if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) {
dwc->dev_state = DWC3_CONFIGURED_STATE;
+ /*
+ * Enable transition to U1/U2 state when
+ * nothing is pending from application.
+ */
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg |= (DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA);
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
dwc->resize_fifos = true;
dev_dbg(dwc->dev, "resize fifos flag SET\n");
}
dwc->u1sel = timing.u1sel;
dwc->u1pel = timing.u1pel;
- dwc->u2sel = timing.u2sel;
- dwc->u2pel = timing.u2pel;
+ dwc->u2sel = le16_to_cpu(timing.u2sel);
+ dwc->u2pel = le16_to_cpu(timing.u2pel);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
if (reg & DWC3_DCTL_INITU2ENA)
const struct dwc3_event_depevt *event)
{
struct usb_ctrlrequest *ctrl = dwc->ctrl_req;
- int ret;
+ int ret = -EINVAL;
u32 len;
if (!dwc->gadget_driver)
- goto err;
+ goto out;
len = le16_to_cpu(ctrl->wLength);
if (!len) {
if (ret == USB_GADGET_DELAYED_STATUS)
dwc->delayed_status = true;
- if (ret >= 0)
- return;
-
-err:
- dwc3_ep0_stall_and_restart(dwc);
+out:
+ if (ret < 0)
+ dwc3_ep0_stall_and_restart(dwc);
}
static void dwc3_ep0_complete_data(struct dwc3 *dwc,
}
}
-static void dwc3_ep0_complete_req(struct dwc3 *dwc,
+static void dwc3_ep0_complete_status(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r;
dev_dbg(dwc->dev, "Invalid Test #%d\n",
dwc->test_mode_nr);
dwc3_ep0_stall_and_restart(dwc);
+ return;
}
}
struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
dep->flags &= ~DWC3_EP_BUSY;
- dep->res_trans_idx = 0;
+ dep->resource_index = 0;
dwc->setup_packet_pending = false;
switch (dwc->ep0state) {
case EP0_STATUS_PHASE:
dev_vdbg(dwc->dev, "Status Phase\n");
- dwc3_ep0_complete_req(dwc, event);
+ dwc3_ep0_complete_status(dwc, event);
break;
default:
WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state);
dwc3_ep0_out_start(dwc);
}
-static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
- const struct dwc3_event_depevt *event)
+static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
+ struct dwc3_ep *dep, struct dwc3_request *req)
{
- struct dwc3_ep *dep;
- struct dwc3_request *req;
int ret;
- dep = dwc->eps[0];
-
- if (list_empty(&dep->request_list)) {
- dev_vdbg(dwc->dev, "pending request for EP0 Data phase\n");
- dep->flags |= DWC3_EP_PENDING_REQUEST;
-
- if (event->endpoint_number)
- dep->flags |= DWC3_EP0_DIR_IN;
- return;
- }
-
- req = next_request(&dep->request_list);
- req->direction = !!event->endpoint_number;
+ req->direction = !!dep->number;
if (req->request.length == 0) {
- ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
+ ret = dwc3_ep0_start_trans(dwc, dep->number,
dwc->ctrl_req_addr, 0,
DWC3_TRBCTL_CONTROL_DATA);
- } else if ((req->request.length % dep->endpoint.maxpacket)
- && (event->endpoint_number == 0)) {
+ } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket)
+ && (dep->number == 0)) {
+ u32 transfer_size;
+
ret = usb_gadget_map_request(&dwc->gadget, &req->request,
- event->endpoint_number);
+ dep->number);
if (ret) {
dev_dbg(dwc->dev, "failed to map request\n");
return;
}
- WARN_ON(req->request.length > dep->endpoint.maxpacket);
+ WARN_ON(req->request.length > DWC3_EP0_BOUNCE_SIZE);
+
+ transfer_size = roundup(req->request.length,
+ (u32) dep->endpoint.maxpacket);
dwc->ep0_bounced = true;
/*
- * REVISIT in case request length is bigger than EP0
- * wMaxPacketSize, we will need two chained TRBs to handle
- * the transfer.
+ * REVISIT in case request length is bigger than
+ * DWC3_EP0_BOUNCE_SIZE we will need two chained
+ * TRBs to handle the transfer.
*/
- ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
- dwc->ep0_bounce_addr, dep->endpoint.maxpacket,
+ ret = dwc3_ep0_start_trans(dwc, dep->number,
+ dwc->ep0_bounce_addr, transfer_size,
DWC3_TRBCTL_CONTROL_DATA);
} else {
ret = usb_gadget_map_request(&dwc->gadget, &req->request,
- event->endpoint_number);
+ dep->number);
if (ret) {
dev_dbg(dwc->dev, "failed to map request\n");
return;
}
- ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
- req->request.dma, req->request.length,
- DWC3_TRBCTL_CONTROL_DATA);
+ ret = dwc3_ep0_start_trans(dwc, dep->number, req->request.dma,
+ req->request.length, DWC3_TRBCTL_CONTROL_DATA);
}
WARN_ON(ret < 0);
}
+static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
+ const struct dwc3_event_depevt *event)
+{
+ struct dwc3_ep *dep;
+ struct dwc3_request *req;
+
+ dep = dwc->eps[0];
+
+ if (list_empty(&dep->request_list)) {
+ dev_vdbg(dwc->dev, "pending request for EP0 Data phase\n");
+ dep->flags |= DWC3_EP_PENDING_REQUEST;
+
+ if (event->endpoint_number)
+ dep->flags |= DWC3_EP0_DIR_IN;
+ return;
+ }
+
+ req = next_request(&dep->request_list);
+ dep = dwc->eps[event->endpoint_number];
+
+ __dwc3_ep0_do_control_data(dwc, dep, req);
+}
+
static int dwc3_ep0_start_control_status(struct dwc3_ep *dep)
{
struct dwc3 *dwc = dep->dwc;
dwc->ctrl_req_addr, 0, type);
}
-static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum)
+static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep)
{
- struct dwc3_ep *dep = dwc->eps[epnum];
-
if (dwc->resize_fifos) {
dev_dbg(dwc->dev, "starting to resize fifos\n");
dwc3_gadget_resize_tx_fifos(dwc);
WARN_ON(dwc3_ep0_start_control_status(dep));
}
+static void dwc3_ep0_do_control_status(struct dwc3 *dwc,
+ const struct dwc3_event_depevt *event)
+{
+ struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
+
+ __dwc3_ep0_do_control_status(dwc, dep);
+}
+
static void dwc3_ep0_xfernotready(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
dwc->setup_packet_pending = true;
/*
- * This part is very tricky: If we has just handled
+ * This part is very tricky: If we have just handled
* XferNotReady(Setup) and we're now expecting a
* XferComplete but, instead, we receive another
* XferNotReady(Setup), we should STALL and restart
return;
}
- dwc3_ep0_do_control_status(dwc, event->endpoint_number);
+ dwc3_ep0_do_control_status(dwc, event);
}
}
int retries = 10000;
u32 reg;
+ /*
+ * Wait until device controller is ready. Only applies to 1.94a and
+ * later RTL.
+ */
+ if (dwc->revision >= DWC3_REVISION_194A) {
+ while (--retries) {
+ reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+ if (reg & DWC3_DSTS_DCNRD)
+ udelay(5);
+ else
+ break;
+ }
+
+ if (retries <= 0)
+ return -ETIMEDOUT;
+ }
+
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
reg |= DWC3_DCTL_ULSTCHNGREQ(state);
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+ /*
+ * The following code is racy when called from dwc3_gadget_wakeup,
+ * and is not needed, at least on newer versions
+ */
+ if (dwc->revision >= DWC3_REVISION_194A)
+ return 0;
+
/* wait for a change in DSTS */
+ retries = 10000;
while (--retries) {
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
return "Clear Stall";
case DWC3_DEPCMD_SETSTALL:
return "Set Stall";
- case DWC3_DEPCMD_GETSEQNUMBER:
- return "Get Data Sequence Number";
+ case DWC3_DEPCMD_GETEPSTATE:
+ return "Get Endpoint State";
case DWC3_DEPCMD_SETTRANSFRESOURCE:
return "Set Endpoint Transfer Resource";
case DWC3_DEPCMD_SETEPCONFIG:
params.param0 = DWC3_DEPCFG_EP_TYPE(usb_endpoint_type(desc))
| DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc))
- | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst);
+ | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst - 1);
params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN
| DWC3_DEPCFG_XFER_NOT_READY_EN;
{
struct dwc3_request *req;
- if (!list_empty(&dep->req_queued))
+ if (!list_empty(&dep->req_queued)) {
dwc3_stop_active_transfer(dwc, dep->number);
+ /*
+ * NOTICE: We are violating what the Databook says about the
+ * EndTransfer command. Ideally we would _always_ wait for the
+ * EndTransfer Command Completion IRQ, but that's causing too
+ * much trouble synchronizing between us and gadget driver.
+ *
+ * We have discussed this with the IP Provider and it was
+ * suggested to giveback all requests here, but give HW some
+ * extra time to synchronize with the interconnect. We're using
+ * an arbitraty 100us delay for that.
+ *
+ * Note also that a similar handling was tested by Synopsys
+ * (thanks a lot Paul) and nothing bad has come out of it.
+ * In short, what we're doing is:
+ *
+ * - Issue EndTransfer WITH CMDIOC bit set
+ * - Wait 100us
+ * - giveback all requests to gadget driver
+ */
+ udelay(100);
+
+ while (!list_empty(&dep->req_queued)) {
+ req = next_request(&dep->req_queued);
+
+ dwc3_gadget_giveback(dep, req, -ESHUTDOWN);
+ }
+ }
+
while (!list_empty(&dep->request_list)) {
req = next_request(&dep->request_list);
case USB_ENDPOINT_XFER_ISOC:
trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
- /* IOC every DWC3_TRB_NUM / 4 so we can refill */
- if (!(cur_slot % (DWC3_TRB_NUM / 4)))
+ if (!req->request.no_interrupt)
trb->ctrl |= DWC3_TRB_CTRL_IOC;
break;
dep->flags |= DWC3_EP_BUSY;
if (start_new) {
- dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc,
+ dep->resource_index = dwc3_gadget_ep_get_transfer_index(dwc,
dep->number);
- WARN_ON_ONCE(!dep->res_trans_idx);
+ WARN_ON_ONCE(!dep->resource_index);
}
return 0;
}
+static void __dwc3_gadget_start_isoc(struct dwc3 *dwc,
+ struct dwc3_ep *dep, u32 cur_uf)
+{
+ u32 uf;
+
+ if (list_empty(&dep->request_list)) {
+ dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
+ dep->name);
+ return;
+ }
+
+ /* 4 micro frames in the future */
+ uf = cur_uf + dep->interval * 4;
+
+ __dwc3_gadget_kick_transfer(dep, uf, 1);
+}
+
+static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
+ struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
+{
+ u32 cur_uf, mask;
+
+ mask = ~(dep->interval - 1);
+ cur_uf = event->parameters & mask;
+
+ __dwc3_gadget_start_isoc(dwc, dep, cur_uf);
+}
+
static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
{
struct dwc3 *dwc = dep->dwc;
list_add_tail(&req->list, &dep->request_list);
- if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && (dep->flags & DWC3_EP_BUSY))
- dep->flags |= DWC3_EP_PENDING_REQUEST;
-
/*
- * There are two special cases:
+ * There are a few special cases:
*
* 1. XferNotReady with empty list of requests. We need to kick the
* transfer here in that situation, otherwise we will be NAKing
* able to receive the data until the next request is queued.
* The following code is handling exactly that.
*
- * 2. XferInProgress on Isoc EP with an active transfer. We need to
- * kick the transfer here after queuing a request, otherwise the
- * core may not see the modified TRB(s).
*/
if (dep->flags & DWC3_EP_PENDING_REQUEST) {
int ret;
- int start_trans = 1;
- u8 trans_idx = dep->res_trans_idx;
- if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
- (dep->flags & DWC3_EP_BUSY)) {
- start_trans = 0;
- WARN_ON_ONCE(!trans_idx);
- } else {
- trans_idx = 0;
+ ret = __dwc3_gadget_kick_transfer(dep, 0, true);
+ if (ret && ret != -EBUSY) {
+ struct dwc3 *dwc = dep->dwc;
+
+ dev_dbg(dwc->dev, "%s: failed to kick transfers\n",
+ dep->name);
}
+ }
- ret = __dwc3_gadget_kick_transfer(dep, trans_idx, start_trans);
+ /*
+ * 2. XferInProgress on Isoc EP with an active transfer. We need to
+ * kick the transfer here after queuing a request, otherwise the
+ * core may not see the modified TRB(s).
+ */
+ if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
+ (dep->flags & DWC3_EP_BUSY)) {
+ WARN_ON_ONCE(!dep->resource_index);
+ ret = __dwc3_gadget_kick_transfer(dep, dep->resource_index,
+ false);
if (ret && ret != -EBUSY) {
struct dwc3 *dwc = dep->dwc;
dev_dbg(dwc->dev, "%s: failed to kick transfers\n",
dep->name);
}
- };
+ }
+
+ /*
+ * 3. Missed ISOC Handling. We need to start isoc transfer on the saved
+ * uframe number.
+ */
+ if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
+ (dep->flags & DWC3_EP_MISSED_ISOC)) {
+ __dwc3_gadget_start_isoc(dwc, dep, dep->current_uf);
+ dep->flags &= ~DWC3_EP_MISSED_ISOC;
+ }
return 0;
}
memset(¶ms, 0x00, sizeof(params));
if (value) {
- if (dep->number == 0 || dep->number == 1) {
- /*
- * Whenever EP0 is stalled, we will restart
- * the state machine, thus moving back to
- * Setup Phase
- */
- dwc->ep0state = EP0_SETUP_PHASE;
- }
-
ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
DWC3_DEPCMD_SETSTALL, ¶ms);
if (ret)
dep->flags |= DWC3_EP_WEDGE;
spin_unlock_irqrestore(&dwc->lock, flags);
- return dwc3_gadget_ep_set_halt(ep, 1);
+ if (dep->number == 0 || dep->number == 1)
+ return dwc3_gadget_ep0_set_halt(ep, 1);
+ else
+ return dwc3_gadget_ep_set_halt(ep, 1);
}
/* -------------------------------------------------------------------------- */
.free_request = dwc3_gadget_ep_free_request,
.queue = dwc3_gadget_ep0_queue,
.dequeue = dwc3_gadget_ep_dequeue,
- .set_halt = dwc3_gadget_ep_set_halt,
+ .set_halt = dwc3_gadget_ep0_set_halt,
.set_wedge = dwc3_gadget_ep_set_wedge,
};
goto out;
}
- /* write zeroes to Link Change Request */
- reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
- dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+ /* Recent versions do this automatically */
+ if (dwc->revision < DWC3_REVISION_194A) {
+ /* write zeroes to Link Change Request */
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+ }
/* poll until Link State changes to ON */
timeout = jiffies + msecs_to_jiffies(100);
return 0;
}
-static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on)
+static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on)
{
u32 reg;
u32 timeout = 500;
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
if (is_on) {
- reg &= ~DWC3_DCTL_TRGTULST_MASK;
- reg |= (DWC3_DCTL_RUN_STOP
- | DWC3_DCTL_TRGTULST_RX_DET);
+ if (dwc->revision <= DWC3_REVISION_187A) {
+ reg &= ~DWC3_DCTL_TRGTULST_MASK;
+ reg |= DWC3_DCTL_TRGTULST_RX_DET;
+ }
+
+ if (dwc->revision >= DWC3_REVISION_194A)
+ reg &= ~DWC3_DCTL_KEEP_CONNECT;
+ reg |= DWC3_DCTL_RUN_STOP;
} else {
reg &= ~DWC3_DCTL_RUN_STOP;
}
}
timeout--;
if (!timeout)
- break;
+ return -ETIMEDOUT;
udelay(1);
} while (1);
dwc->gadget_driver
? dwc->gadget_driver->function : "no-function",
is_on ? "connect" : "disconnect");
+
+ return 0;
}
static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)
{
struct dwc3 *dwc = gadget_to_dwc(g);
unsigned long flags;
+ int ret;
is_on = !!is_on;
spin_lock_irqsave(&dwc->lock, flags);
- dwc3_gadget_run_stop(dwc, is_on);
+ ret = dwc3_gadget_run_stop(dwc, is_on);
spin_unlock_irqrestore(&dwc->lock, flags);
- return 0;
+ return ret;
}
static int dwc3_gadget_start(struct usb_gadget *g,
return 0;
}
+
static const struct usb_gadget_ops dwc3_gadget_ops = {
.get_frame = dwc3_gadget_get_frame,
.wakeup = dwc3_gadget_wakeup,
struct dwc3_trb *trb;
unsigned int count;
unsigned int s_pkt = 0;
+ unsigned int trb_status;
do {
req = next_request(&dep->req_queued);
if (dep->direction) {
if (count) {
- dev_err(dwc->dev, "incomplete IN transfer %s\n",
- dep->name);
- status = -ECONNRESET;
+ trb_status = DWC3_TRB_SIZE_TRBSTS(trb->size);
+ if (trb_status == DWC3_TRBSTS_MISSED_ISOC) {
+ dev_dbg(dwc->dev, "incomplete IN transfer %s\n",
+ dep->name);
+ dep->current_uf = event->parameters &
+ ~(dep->interval - 1);
+ dep->flags |= DWC3_EP_MISSED_ISOC;
+ } else {
+ dev_err(dwc->dev, "incomplete IN transfer %s\n",
+ dep->name);
+ status = -ECONNRESET;
+ }
}
} else {
if (count && (event->status & DEPEVT_STATUS_SHORT))
if (s_pkt)
break;
if ((event->status & DEPEVT_STATUS_LST) &&
- (trb->ctrl & DWC3_TRB_CTRL_LST))
+ (trb->ctrl & (DWC3_TRB_CTRL_LST |
+ DWC3_TRB_CTRL_HWO)))
break;
if ((event->status & DEPEVT_STATUS_IOC) &&
(trb->ctrl & DWC3_TRB_CTRL_IOC))
}
}
-static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
- struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
-{
- u32 uf, mask;
-
- if (list_empty(&dep->request_list)) {
- dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
- dep->name);
- return;
- }
-
- mask = ~(dep->interval - 1);
- uf = event->parameters & mask;
- /* 4 micro frames in the future */
- uf += dep->interval * 4;
-
- __dwc3_gadget_kick_transfer(dep, uf, 1);
-}
-
-static void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep,
- const struct dwc3_event_depevt *event)
-{
- struct dwc3 *dwc = dep->dwc;
- struct dwc3_event_depevt mod_ev = *event;
-
- /*
- * We were asked to remove one request. It is possible that this
- * request and a few others were started together and have the same
- * transfer index. Since we stopped the complete endpoint we don't
- * know how many requests were already completed (and not yet)
- * reported and how could be done (later). We purge them all until
- * the end of the list.
- */
- mod_ev.status = DEPEVT_STATUS_LST;
- dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN);
- dep->flags &= ~DWC3_EP_BUSY;
- /* pending requests are ignored and are queued on XferNotReady */
-}
-
-static void dwc3_ep_cmd_compl(struct dwc3_ep *dep,
- const struct dwc3_event_depevt *event)
-{
- u32 param = event->parameters;
- u32 cmd_type = (param >> 8) & ((1 << 5) - 1);
-
- switch (cmd_type) {
- case DWC3_DEPCMD_ENDTRANSFER:
- dwc3_process_ep_cmd_complete(dep, event);
- break;
- case DWC3_DEPCMD_STARTTRANSFER:
- dep->res_trans_idx = param & 0x7f;
- break;
- default:
- printk(KERN_ERR "%s() unknown /unexpected type: %d\n",
- __func__, cmd_type);
- break;
- };
-}
-
static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
dep = dwc->eps[epnum];
+ if (!(dep->flags & DWC3_EP_ENABLED))
+ return;
+
dev_vdbg(dwc->dev, "%s: %s\n", dep->name,
dwc3_ep_event_string(event->endpoint_event));
switch (event->endpoint_event) {
case DWC3_DEPEVT_XFERCOMPLETE:
- dep->res_trans_idx = 0;
+ dep->resource_index = 0;
if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",
dev_dbg(dwc->dev, "%s FIFO Overrun\n", dep->name);
break;
case DWC3_DEPEVT_EPCMDCMPLT:
- dwc3_ep_cmd_compl(dep, event);
+ dev_vdbg(dwc->dev, "Endpoint Command Complete\n");
break;
}
}
dep = dwc->eps[epnum];
- WARN_ON(!dep->res_trans_idx);
- if (dep->res_trans_idx) {
- cmd = DWC3_DEPCMD_ENDTRANSFER;
- cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC;
- cmd |= DWC3_DEPCMD_PARAM(dep->res_trans_idx);
- memset(¶ms, 0, sizeof(params));
- ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms);
- WARN_ON_ONCE(ret);
- dep->res_trans_idx = 0;
- }
+ if (!dep->resource_index)
+ return;
+
+ cmd = DWC3_DEPCMD_ENDTRANSFER;
+ cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC;
+ cmd |= DWC3_DEPCMD_PARAM(dep->resource_index);
+ memset(¶ms, 0, sizeof(params));
+ ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms);
+ WARN_ON_ONCE(ret);
+ dep->resource_index = 0;
}
static void dwc3_stop_active_transfers(struct dwc3 *dwc)
static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
{
+ int reg;
+
dev_vdbg(dwc->dev, "%s\n", __func__);
-#if 0
- XXX
- U1/U2 is powersave optimization. Skip it for now. Anyway we need to
- enable it before we can disable it.
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_INITU1ENA;
reg &= ~DWC3_DCTL_INITU2ENA;
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
-#endif
- dwc3_stop_active_transfers(dwc);
dwc3_disconnect_gadget(dwc);
dwc->start_config_issued = false;
dwc->setup_packet_pending = false;
}
-static void dwc3_gadget_usb3_phy_power(struct dwc3 *dwc, int on)
+static void dwc3_gadget_usb3_phy_suspend(struct dwc3 *dwc, int suspend)
{
u32 reg;
reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
- if (on)
- reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
- else
+ if (suspend)
reg |= DWC3_GUSB3PIPECTL_SUSPHY;
+ else
+ reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
}
-static void dwc3_gadget_usb2_phy_power(struct dwc3 *dwc, int on)
+static void dwc3_gadget_usb2_phy_suspend(struct dwc3 *dwc, int suspend)
{
u32 reg;
reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
- if (on)
- reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
- else
+ if (suspend)
reg |= DWC3_GUSB2PHYCFG_SUSPHY;
+ else
+ reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
}
/* after reset -> Default State */
dwc->dev_state = DWC3_DEFAULT_STATE;
- /* Enable PHYs */
- dwc3_gadget_usb2_phy_power(dwc, true);
- dwc3_gadget_usb3_phy_power(dwc, true);
+ /* Recent versions support automatic phy suspend and don't need this */
+ if (dwc->revision < DWC3_REVISION_194A) {
+ /* Resume PHYs */
+ dwc3_gadget_usb2_phy_suspend(dwc, false);
+ dwc3_gadget_usb3_phy_suspend(dwc, false);
+ }
if (dwc->gadget.speed != USB_SPEED_UNKNOWN)
dwc3_disconnect_gadget(dwc);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_TSTCTRL_MASK;
- reg &= ~(DWC3_DCTL_INITU1ENA | DWC3_DCTL_INITU2ENA);
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
dwc->test_mode = false;
dwc3_writel(dwc->regs, DWC3_GCTL, reg);
}
-static void dwc3_gadget_disable_phy(struct dwc3 *dwc, u8 speed)
+static void dwc3_gadget_phy_suspend(struct dwc3 *dwc, u8 speed)
{
switch (speed) {
case USB_SPEED_SUPER:
- dwc3_gadget_usb2_phy_power(dwc, false);
+ dwc3_gadget_usb2_phy_suspend(dwc, true);
break;
case USB_SPEED_HIGH:
case USB_SPEED_FULL:
case USB_SPEED_LOW:
- dwc3_gadget_usb3_phy_power(dwc, false);
+ dwc3_gadget_usb3_phy_suspend(dwc, true);
break;
}
}
break;
}
- /* Disable unneded PHY */
- dwc3_gadget_disable_phy(dwc, dwc->gadget.speed);
+ /* Recent versions support automatic phy suspend and don't need this */
+ if (dwc->revision < DWC3_REVISION_194A) {
+ /* Suspend unneeded PHY */
+ dwc3_gadget_phy_suspend(dwc, dwc->gadget.speed);
+ }
dep = dwc->eps[0];
ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL);
reg |= DWC3_DCFG_LPM_CAP;
dwc3_writel(dwc->regs, DWC3_DCFG, reg);
- reg = dwc3_readl(dwc->regs, DWC3_DCTL);
- reg |= DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA;
- dwc3_writel(dwc->regs, DWC3_DCTL, reg);
-
/* Enable all but Start and End of Frame IRQs */
reg = (DWC3_DEVTEN_VNDRDEVTSTRCVEDEN |
DWC3_DEVTEN_EVNTOVERFLOWEN |
DWC3_DEVTEN_DISCONNEVTEN);
dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);
+ /* Enable USB2 LPM and automatic phy suspend only on recent versions */
+ if (dwc->revision >= DWC3_REVISION_194A) {
+ reg = dwc3_readl(dwc->regs, DWC3_DCFG);
+ reg |= DWC3_DCFG_LPM_CAP;
+ dwc3_writel(dwc->regs, DWC3_DCFG, reg);
+
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN);
+
+ /* TODO: This should be configurable */
+ reg |= DWC3_DCTL_HIRD_THRES(28);
+
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+ dwc3_gadget_usb2_phy_suspend(dwc, false);
+ dwc3_gadget_usb3_phy_suspend(dwc, false);
+ }
+
ret = device_register(&dwc->gadget.dev);
if (ret) {
dev_err(dwc->dev, "failed to register gadget device\n");
#define DWC3_DEPCFG_FIFO_NUMBER(n) ((n) << 17)
#define DWC3_DEPCFG_BURST_SIZE(n) ((n) << 22)
#define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26)
+/* This applies for core versions earlier than 1.94a */
#define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31)
+/* These apply for core versions 1.94a and later */
+#define DWC3_DEPCFG_ACTION_INIT (0 << 30)
+#define DWC3_DEPCFG_ACTION_RESTORE (1 << 30)
+#define DWC3_DEPCFG_ACTION_MODIFY (2 << 30)
/* DEPXFERCFG parameter 0 */
#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
void dwc3_ep0_interrupt(struct dwc3 *dwc,
const struct dwc3_event_depevt *event);
void dwc3_ep0_out_start(struct dwc3 *dwc);
+int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
gfp_t gfp_flags);
int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
int ret;
read = (requesttype & USB_DIR_IN) != 0;
- if (size > (read ? DBGP_MAX_PACKET:0))
+ if (size > (read ? DBGP_MAX_PACKET : 0))
return -1;
/* Compute the control message */
USB2.0 OTG controller, which can be configured as high speed or
full speed USB peripheral.
+config USB_MV_U3D
+ tristate "MARVELL PXA2128 USB 3.0 controller"
+ depends on CPU_MMP3
+ select USB_GADGET_DUALSPEED
+ select USB_GADGET_SUPERSPEED
+ help
+ MARVELL PXA2128 Processor series include a super speed USB3.0 device
+ controller, which support super speed USB peripheral.
+
#
# Controllers available in both integrated and discrete versions
#
obj-$(CONFIG_USB_MV_UDC) += mv_udc.o
mv_udc-y := mv_udc_core.o
obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o
+obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o
#
# USB gadget drivers
static struct usb_composite_driver acm_ms_driver = {
.name = "g_acm_ms",
.dev = &device_desc,
+ .max_speed = USB_SPEED_SUPER,
.strings = dev_strings,
.unbind = __exit_p(acm_ms_unbind),
};
udc = container_of(gadget, struct at91_udc, gadget);
udc->driver = driver;
udc->gadget.dev.driver = &driver->driver;
+ udc->gadget.dev.of_node = udc->pdev->dev.of_node;
dev_set_drvdata(&udc->gadget.dev, &driver->driver);
udc->enabled = 1;
udc->selfpowered = 1;
struct usb_function *f,
struct usb_ep *_ep)
{
+ struct usb_composite_dev *cdev = get_gadget_data(g);
struct usb_endpoint_descriptor *chosen_desc = NULL;
struct usb_descriptor_header **speed_desc = NULL;
_ep->mult = comp_desc->bmAttributes & 0x3;
case USB_ENDPOINT_XFER_BULK:
case USB_ENDPOINT_XFER_INT:
- _ep->maxburst = comp_desc->bMaxBurst;
+ _ep->maxburst = comp_desc->bMaxBurst + 1;
break;
default:
- /* Do nothing for control endpoints */
+ if (comp_desc->bMaxBurst != 0)
+ ERROR(cdev, "ep0 bMaxBurst must be 0\n");
+ _ep->maxburst = 1;
break;
}
}
#include <linux/blkdev.h>
#include <linux/pagemap.h>
#include <linux/export.h>
+#include <linux/hid.h>
#include <asm/unaligned.h>
#include <linux/usb/composite.h>
}
break;
+ case HID_DT_HID:
+ pr_vdebug("hid descriptor\n");
+ if (length != sizeof(struct hid_descriptor))
+ goto inv_length;
+ break;
+
case USB_DT_OTG:
if (length != sizeof(struct usb_otg_descriptor))
goto inv_length;
/*-------------------------------------------------------------------------*/
/* HID gadget struct */
+struct f_hidg_req_list {
+ struct usb_request *req;
+ unsigned int pos;
+ struct list_head list;
+};
+
struct f_hidg {
/* configuration */
unsigned char bInterfaceSubClass;
unsigned short report_length;
/* recv report */
- char *set_report_buff;
- unsigned short set_report_length;
+ struct list_head completed_out_req;
spinlock_t spinlock;
wait_queue_head_t read_queue;
+ unsigned int qlen;
/* send report */
struct mutex lock;
int minor;
struct cdev cdev;
struct usb_function func;
+
struct usb_ep *in_ep;
+ struct usb_ep *out_ep;
};
static inline struct f_hidg *func_to_hidg(struct usb_function *f)
.bDescriptorType = USB_DT_INTERFACE,
/* .bInterfaceNumber = DYNAMIC */
.bAlternateSetting = 0,
- .bNumEndpoints = 1,
+ .bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_HID,
/* .bInterfaceSubClass = DYNAMIC */
/* .bInterfaceProtocol = DYNAMIC */
*/
};
+static struct usb_endpoint_descriptor hidg_hs_out_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ /*.wMaxPacketSize = DYNAMIC */
+ .bInterval = 4, /* FIXME: Add this field in the
+ * HID gadget configuration?
+ * (struct hidg_func_descriptor)
+ */
+};
+
static struct usb_descriptor_header *hidg_hs_descriptors[] = {
(struct usb_descriptor_header *)&hidg_interface_desc,
(struct usb_descriptor_header *)&hidg_desc,
(struct usb_descriptor_header *)&hidg_hs_in_ep_desc,
+ (struct usb_descriptor_header *)&hidg_hs_out_ep_desc,
NULL,
};
*/
};
+static struct usb_endpoint_descriptor hidg_fs_out_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ /*.wMaxPacketSize = DYNAMIC */
+ .bInterval = 10, /* FIXME: Add this field in the
+ * HID gadget configuration?
+ * (struct hidg_func_descriptor)
+ */
+};
+
static struct usb_descriptor_header *hidg_fs_descriptors[] = {
(struct usb_descriptor_header *)&hidg_interface_desc,
(struct usb_descriptor_header *)&hidg_desc,
(struct usb_descriptor_header *)&hidg_fs_in_ep_desc,
+ (struct usb_descriptor_header *)&hidg_fs_out_ep_desc,
NULL,
};
static ssize_t f_hidg_read(struct file *file, char __user *buffer,
size_t count, loff_t *ptr)
{
- struct f_hidg *hidg = file->private_data;
- char *tmp_buff = NULL;
- unsigned long flags;
+ struct f_hidg *hidg = file->private_data;
+ struct f_hidg_req_list *list;
+ struct usb_request *req;
+ unsigned long flags;
+ int ret;
if (!count)
return 0;
spin_lock_irqsave(&hidg->spinlock, flags);
-#define READ_COND (hidg->set_report_buff != NULL)
+#define READ_COND (!list_empty(&hidg->completed_out_req))
+ /* wait for at least one buffer to complete */
while (!READ_COND) {
spin_unlock_irqrestore(&hidg->spinlock, flags);
if (file->f_flags & O_NONBLOCK)
spin_lock_irqsave(&hidg->spinlock, flags);
}
-
- count = min_t(unsigned, count, hidg->set_report_length);
- tmp_buff = hidg->set_report_buff;
- hidg->set_report_buff = NULL;
-
+ /* pick the first one */
+ list = list_first_entry(&hidg->completed_out_req,
+ struct f_hidg_req_list, list);
+ req = list->req;
+ count = min_t(unsigned int, count, req->actual - list->pos);
spin_unlock_irqrestore(&hidg->spinlock, flags);
- if (tmp_buff != NULL) {
- /* copy to user outside spinlock */
- count -= copy_to_user(buffer, tmp_buff, count);
- kfree(tmp_buff);
- } else
- count = -ENOMEM;
+ /* copy to user outside spinlock */
+ count -= copy_to_user(buffer, req->buf + list->pos, count);
+ list->pos += count;
+
+ /*
+ * if this request is completely handled and transfered to
+ * userspace, remove its entry from the list and requeue it
+ * again. Otherwise, we will revisit it again upon the next
+ * call, taking into account its current read position.
+ */
+ if (list->pos == req->actual) {
+ spin_lock_irqsave(&hidg->spinlock, flags);
+ list_del(&list->list);
+ kfree(list);
+ spin_unlock_irqrestore(&hidg->spinlock, flags);
+
+ req->length = hidg->report_length;
+ ret = usb_ep_queue(hidg->out_ep, req, GFP_KERNEL);
+ if (ret < 0)
+ return ret;
+ }
return count;
}
/*-------------------------------------------------------------------------*/
/* usb_function */
-static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req)
+static struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep, unsigned length)
{
- struct f_hidg *hidg = (struct f_hidg *)req->context;
-
- if (req->status != 0 || req->buf == NULL || req->actual == 0) {
- ERROR(hidg->func.config->cdev, "%s FAILED\n", __func__);
- return;
+ struct usb_request *req;
+
+ req = usb_ep_alloc_request(ep, GFP_ATOMIC);
+ if (req) {
+ req->length = length;
+ req->buf = kmalloc(length, GFP_ATOMIC);
+ if (!req->buf) {
+ usb_ep_free_request(ep, req);
+ req = NULL;
+ }
}
+ return req;
+}
- spin_lock(&hidg->spinlock);
-
- hidg->set_report_buff = krealloc(hidg->set_report_buff,
- req->actual, GFP_ATOMIC);
+static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req)
+{
+ struct f_hidg *hidg = (struct f_hidg *) req->context;
+ struct f_hidg_req_list *req_list;
+ unsigned long flags;
- if (hidg->set_report_buff == NULL) {
- spin_unlock(&hidg->spinlock);
+ req_list = kzalloc(sizeof(*req_list), GFP_ATOMIC);
+ if (!req_list)
return;
- }
- hidg->set_report_length = req->actual;
- memcpy(hidg->set_report_buff, req->buf, req->actual);
- spin_unlock(&hidg->spinlock);
+ req_list->req = req;
+
+ spin_lock_irqsave(&hidg->spinlock, flags);
+ list_add_tail(&req_list->list, &hidg->completed_out_req);
+ spin_unlock_irqrestore(&hidg->spinlock, flags);
wake_up(&hidg->read_queue);
}
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
| HID_REQ_SET_REPORT):
VDBG(cdev, "set_report | wLenght=%d\n", ctrl->wLength);
- req->context = hidg;
- req->complete = hidg_set_report_complete;
- goto respond;
+ goto stall;
break;
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
static void hidg_disable(struct usb_function *f)
{
struct f_hidg *hidg = func_to_hidg(f);
+ struct f_hidg_req_list *list, *next;
usb_ep_disable(hidg->in_ep);
hidg->in_ep->driver_data = NULL;
+
+ usb_ep_disable(hidg->out_ep);
+ hidg->out_ep->driver_data = NULL;
+
+ list_for_each_entry_safe(list, next, &hidg->completed_out_req, list) {
+ list_del(&list->list);
+ kfree(list);
+ }
}
static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
{
struct usb_composite_dev *cdev = f->config->cdev;
struct f_hidg *hidg = func_to_hidg(f);
- int status = 0;
+ int i, status = 0;
VDBG(cdev, "hidg_set_alt intf:%d alt:%d\n", intf, alt);
}
status = usb_ep_enable(hidg->in_ep);
if (status < 0) {
- ERROR(cdev, "Enable endpoint FAILED!\n");
+ ERROR(cdev, "Enable IN endpoint FAILED!\n");
goto fail;
}
hidg->in_ep->driver_data = hidg;
}
+
+
+ if (hidg->out_ep != NULL) {
+ /* restart endpoint */
+ if (hidg->out_ep->driver_data != NULL)
+ usb_ep_disable(hidg->out_ep);
+
+ status = config_ep_by_speed(f->config->cdev->gadget, f,
+ hidg->out_ep);
+ if (status) {
+ ERROR(cdev, "config_ep_by_speed FAILED!\n");
+ goto fail;
+ }
+ status = usb_ep_enable(hidg->out_ep);
+ if (status < 0) {
+ ERROR(cdev, "Enable IN endpoint FAILED!\n");
+ goto fail;
+ }
+ hidg->out_ep->driver_data = hidg;
+
+ /*
+ * allocate a bunch of read buffers and queue them all at once.
+ */
+ for (i = 0; i < hidg->qlen && status == 0; i++) {
+ struct usb_request *req =
+ hidg_alloc_ep_req(hidg->out_ep,
+ hidg->report_length);
+ if (req) {
+ req->complete = hidg_set_report_complete;
+ req->context = hidg;
+ status = usb_ep_queue(hidg->out_ep, req,
+ GFP_ATOMIC);
+ if (status)
+ ERROR(cdev, "%s queue req --> %d\n",
+ hidg->out_ep->name, status);
+ } else {
+ usb_ep_disable(hidg->out_ep);
+ hidg->out_ep->driver_data = NULL;
+ status = -ENOMEM;
+ goto fail;
+ }
+ }
+ }
+
fail:
return status;
}
ep->driver_data = c->cdev; /* claim */
hidg->in_ep = ep;
+ ep = usb_ep_autoconfig(c->cdev->gadget, &hidg_fs_out_ep_desc);
+ if (!ep)
+ goto fail;
+ ep->driver_data = c->cdev; /* claim */
+ hidg->out_ep = ep;
+
/* preallocate request and buffer */
status = -ENOMEM;
hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL);
if (!hidg->req)
goto fail;
-
hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL);
if (!hidg->req->buf)
goto fail;
hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol;
hidg_hs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);
hidg_fs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);
+ hidg_hs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);
+ hidg_fs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);
hidg_desc.desc[0].bDescriptorType = HID_DT_REPORT;
hidg_desc.desc[0].wDescriptorLength =
cpu_to_le16(hidg->report_desc_length);
- hidg->set_report_buff = NULL;
-
/* copy descriptors */
f->descriptors = usb_copy_descriptors(hidg_fs_descriptors);
if (!f->descriptors)
if (gadget_is_dualspeed(c->cdev->gadget)) {
hidg_hs_in_ep_desc.bEndpointAddress =
hidg_fs_in_ep_desc.bEndpointAddress;
+ hidg_hs_out_ep_desc.bEndpointAddress =
+ hidg_fs_out_ep_desc.bEndpointAddress;
f->hs_descriptors = usb_copy_descriptors(hidg_hs_descriptors);
if (!f->hs_descriptors)
goto fail;
spin_lock_init(&hidg->spinlock);
init_waitqueue_head(&hidg->write_queue);
init_waitqueue_head(&hidg->read_queue);
+ INIT_LIST_HEAD(&hidg->completed_out_req);
/* create char device */
cdev_init(&hidg->cdev, &f_hidg_fops);
usb_free_descriptors(f->descriptors);
kfree(hidg->report_desc);
- kfree(hidg->set_report_buff);
kfree(hidg);
}
hidg->func.disable = hidg_disable;
hidg->func.setup = hidg_setup;
+ /* this could me made configurable at some point */
+ hidg->qlen = 4;
+
status = usb_add_function(c, &hidg->func);
if (status)
kfree(hidg);
* function for a USB device, it also illustrates a technique of
* double-buffering for increased throughput.
*
- * Function supports multiple logical units (LUNs). Backing storage
- * for each LUN is provided by a regular file or a block device.
- * Access for each LUN can be limited to read-only. Moreover, the
- * function can indicate that LUN is removable and/or CD-ROM. (The
- * later implies read-only access.)
- *
+ * For more information about MSF and in particular its module
+ * parameters and sysfs interface read the
+ * <Documentation/usb/mass-storage.txt> file.
+ */
+
+/*
* MSF is configured by specifying a fsg_config structure. It has the
* following fields:
*
* ->nofua Flag specifying that FUA flag in SCSI WRITE(10,12)
* commands for this LUN shall be ignored.
*
- * lun_name_format A printf-like format for names of the LUN
- * devices. This determines how the
- * directory in sysfs will be named.
- * Unless you are using several MSFs in
- * a single gadget (as opposed to single
- * MSF in many configurations) you may
- * leave it as NULL (in which case
- * "lun%d" will be used). In the format
- * you can use "%d" to index LUNs for
- * MSF's with more than one LUN. (Beware
- * that there is only one integer given
- * as an argument for the format and
- * specifying invalid format may cause
- * unspecified behaviour.)
- * thread_name Name of the kernel thread process used by the
- * MSF. You can safely set it to NULL
- * (in which case default "file-storage"
- * will be used).
- *
* vendor_name
* product_name
* release Information used as a reply to INQUIRY
* data track and no audio tracks; hence there need be only one
* backing file per LUN.
*
- *
- * MSF includes support for module parameters. If gadget using it
- * decides to use it, the following module parameters will be
- * available:
- *
- * file=filename[,filename...]
- * Names of the files or block devices used for
- * backing storage.
- * ro=b[,b...] Default false, boolean for read-only access.
- * removable=b[,b...]
- * Default true, boolean for removable media.
- * cdrom=b[,b...] Default false, boolean for whether to emulate
- * a CD-ROM drive.
- * nofua=b[,b...] Default false, booleans for ignore FUA flag
- * in SCSI WRITE(10,12) commands
- * luns=N Default N = number of filenames, number of
- * LUNs to support.
- * stall Default determined according to the type of
- * USB device controller (usually true),
- * boolean to permit the driver to halt
- * bulk endpoints.
- *
- * The module parameters may be prefixed with some string. You need
- * to consult gadget's documentation or source to verify whether it is
- * using those module parameters and if it does what are the prefixes
- * (look for FSG_MODULE_PARAMETERS() macro usage, what's inside it is
- * the prefix).
- *
- *
- * Requirements are modest; only a bulk-in and a bulk-out endpoint are
- * needed. The memory requirement amounts to two 16K buffers, size
- * configurable by a parameter. Support is included for both
- * full-speed and high-speed operation.
- *
- * Note that the driver is slightly non-portable in that it assumes a
- * single memory/DMA buffer will be useable for bulk-in, bulk-out, and
- * interrupt-in endpoints. With most device controllers this isn't an
- * issue, but there may be some with hardware restrictions that prevent
- * a buffer from being used by more than one endpoint.
- *
- *
- * The pathnames of the backing files and the ro settings are
- * available in the attribute files "file" and "ro" in the lun<n> (or
- * to be more precise in a directory which name comes from
- * "lun_name_format" option!) subdirectory of the gadget's sysfs
- * directory. If the "removable" option is set, writing to these
- * files will simulate ejecting/loading the medium (writing an empty
- * line means eject) and adjusting a write-enable tab. Changes to the
- * ro setting are not allowed when the medium is loaded or if CD-ROM
- * emulation is being used.
- *
- * When a LUN receive an "eject" SCSI request (Start/Stop Unit),
- * if the LUN is removable, the backing file is released to simulate
- * ejection.
- *
- *
* This function is heavily based on "File-backed Storage Gadget" by
* Alan Stern which in turn is heavily based on "Gadget Zero" by David
* Brownell. The driver's SCSI command interface was based on the
* In normal operation the main thread is started during the gadget's
* fsg_bind() callback and stopped during fsg_unbind(). But it can
* also exit when it receives a signal, and there's no point leaving
- * the gadget running when the thread is dead. At of this moment, MSF
+ * the gadget running when the thread is dead. As of this moment, MSF
* provides no way to deregister the gadget when thread dies -- maybe
* a callback functions is needed.
*
char nofua;
} luns[FSG_MAX_LUNS];
- const char *lun_name_format;
- const char *thread_name;
-
/* Callback functions. */
const struct fsg_operations *ops;
/* Gadget's private data. */
/*************************** DEVICE ATTRIBUTES ***************************/
-/* Write permission is checked per LUN in store_*() functions. */
static DEVICE_ATTR(ro, 0644, fsg_show_ro, fsg_store_ro);
static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, fsg_store_nofua);
static DEVICE_ATTR(file, 0644, fsg_show_file, fsg_store_file);
+static struct device_attribute dev_attr_ro_cdrom =
+ __ATTR(ro, 0444, fsg_show_ro, NULL);
+static struct device_attribute dev_attr_file_nonremovable =
+ __ATTR(file, 0444, fsg_show_file, NULL);
+
/****************************** FSG COMMON ******************************/
curlun->dev.parent = &gadget->dev;
/* curlun->dev.driver = &fsg_driver.driver; XXX */
dev_set_drvdata(&curlun->dev, &common->filesem);
- dev_set_name(&curlun->dev,
- cfg->lun_name_format
- ? cfg->lun_name_format
- : "lun%d",
- i);
+ dev_set_name(&curlun->dev, "lun%d", i);
rc = device_register(&curlun->dev);
if (rc) {
goto error_release;
}
- rc = device_create_file(&curlun->dev, &dev_attr_ro);
+ rc = device_create_file(&curlun->dev,
+ curlun->cdrom
+ ? &dev_attr_ro_cdrom
+ : &dev_attr_ro);
if (rc)
goto error_luns;
- rc = device_create_file(&curlun->dev, &dev_attr_file);
+ rc = device_create_file(&curlun->dev,
+ curlun->removable
+ ? &dev_attr_file
+ : &dev_attr_file_nonremovable);
if (rc)
goto error_luns;
rc = device_create_file(&curlun->dev, &dev_attr_nofua);
/* Tell the thread to start working */
common->thread_task =
- kthread_create(fsg_main_thread, common,
- cfg->thread_name ?: "file-storage");
+ kthread_create(fsg_main_thread, common, "file-storage");
if (IS_ERR(common->thread_task)) {
rc = PTR_ERR(common->thread_task);
goto error_release;
/* In error recovery common->nluns may be zero. */
for (; i; --i, ++lun) {
device_remove_file(&lun->dev, &dev_attr_nofua);
- device_remove_file(&lun->dev, &dev_attr_ro);
- device_remove_file(&lun->dev, &dev_attr_file);
+ device_remove_file(&lun->dev,
+ lun->cdrom
+ ? &dev_attr_ro_cdrom
+ : &dev_attr_ro);
+ device_remove_file(&lun->dev,
+ lun->removable
+ ? &dev_attr_file
+ : &dev_attr_file_nonremovable);
fsg_lun_close(lun);
device_unregister(&lun->dev);
}
for (i = 0, lun = cfg->luns; i < cfg->nluns; ++i, ++lun) {
lun->ro = !!params->ro[i];
lun->cdrom = !!params->cdrom[i];
- lun->removable = /* Removable by default */
- params->removable_count <= i || params->removable[i];
+ lun->removable = !!params->removable[i];
lun->filename =
params->file_count > i && params->file[i][0]
? params->file[i]
}
/* Let MSF use defaults */
- cfg->lun_name_format = 0;
- cfg->thread_name = 0;
cfg->vendor_name = 0;
cfg->product_name = 0;
cfg->release = 0xffff;
fsg_config_from_params(&cfg, params);
return fsg_common_init(common, cdev, &cfg);
}
-
unsigned int uvc_gadget_trace_param;
+/*-------------------------------------------------------------------------*/
+
+/* module parameters specific to the Video streaming endpoint */
+static unsigned streaming_interval = 1;
+module_param(streaming_interval, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(streaming_interval, "1 - 16");
+
+static unsigned streaming_maxpacket = 1024;
+module_param(streaming_maxpacket, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(streaming_maxpacket, "0 - 1023 (fs), 0 - 1024 (hs/ss)");
+
+static unsigned streaming_mult;
+module_param(streaming_mult, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(streaming_mult, "0 - 2 (hs/ss only)");
+
+static unsigned streaming_maxburst;
+module_param(streaming_maxburst, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(streaming_maxburst, "0 - 15 (ss only)");
+
/* --------------------------------------------------------------------------
* Function descriptors
*/
#define UVC_INTF_VIDEO_CONTROL 0
#define UVC_INTF_VIDEO_STREAMING 1
+#define STATUS_BYTECOUNT 16 /* 16 bytes status */
+
static struct usb_interface_assoc_descriptor uvc_iad __initdata = {
.bLength = sizeof(uvc_iad),
.bDescriptorType = USB_DT_INTERFACE_ASSOCIATION,
.iInterface = 0,
};
-static struct usb_endpoint_descriptor uvc_control_ep __initdata = {
+static struct usb_endpoint_descriptor uvc_fs_control_ep __initdata = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
- .wMaxPacketSize = cpu_to_le16(16),
+ .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT),
.bInterval = 8,
};
.bLength = UVC_DT_CONTROL_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_CS_ENDPOINT,
.bDescriptorSubType = UVC_EP_INTERRUPT,
- .wMaxTransferSize = cpu_to_le16(16),
+ .wMaxTransferSize = cpu_to_le16(STATUS_BYTECOUNT),
};
static struct usb_interface_descriptor uvc_streaming_intf_alt0 __initdata = {
.iInterface = 0,
};
-static struct usb_endpoint_descriptor uvc_streaming_ep = {
+static struct usb_endpoint_descriptor uvc_fs_streaming_ep = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bInterval = 1,
};
+static struct usb_endpoint_descriptor uvc_hs_streaming_ep = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(1024),
+ .bInterval = 1,
+};
+
+/* super speed support */
+static struct usb_endpoint_descriptor uvc_ss_control_ep __initdata = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT),
+ .bInterval = 8,
+};
+
+static struct usb_ss_ep_comp_descriptor uvc_ss_control_comp __initdata = {
+ .bLength = sizeof uvc_ss_control_comp,
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+
+ /* the following 3 values can be tweaked if necessary */
+ /* .bMaxBurst = 0, */
+ /* .bmAttributes = 0, */
+ .wBytesPerInterval = cpu_to_le16(STATUS_BYTECOUNT),
+};
+
+static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(1024),
+ .bInterval = 4,
+};
+
+static struct usb_ss_ep_comp_descriptor uvc_ss_streaming_comp = {
+ .bLength = sizeof uvc_ss_streaming_comp,
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+
+ /* the following 3 values can be tweaked if necessary */
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(1024),
+};
+
static const struct usb_descriptor_header * const uvc_fs_streaming[] = {
(struct usb_descriptor_header *) &uvc_streaming_intf_alt1,
- (struct usb_descriptor_header *) &uvc_streaming_ep,
+ (struct usb_descriptor_header *) &uvc_fs_streaming_ep,
NULL,
};
static const struct usb_descriptor_header * const uvc_hs_streaming[] = {
(struct usb_descriptor_header *) &uvc_streaming_intf_alt1,
- (struct usb_descriptor_header *) &uvc_streaming_ep,
+ (struct usb_descriptor_header *) &uvc_hs_streaming_ep,
+ NULL,
+};
+
+static const struct usb_descriptor_header * const uvc_ss_streaming[] = {
+ (struct usb_descriptor_header *) &uvc_streaming_intf_alt1,
+ (struct usb_descriptor_header *) &uvc_ss_streaming_ep,
+ (struct usb_descriptor_header *) &uvc_ss_streaming_comp,
NULL,
};
struct uvc_device *uvc = to_uvc(f);
struct v4l2_event v4l2_event;
struct uvc_event *uvc_event = (void *)&v4l2_event.u.data;
+ int ret;
INFO(f->config->cdev, "uvc_function_set_alt(%u, %u)\n", interface, alt);
return 0;
if (uvc->video.ep) {
- uvc->video.ep->desc = &uvc_streaming_ep;
+ ret = config_ep_by_speed(f->config->cdev->gadget,
+ &(uvc->func), uvc->video.ep);
+ if (ret)
+ return ret;
usb_ep_enable(uvc->video.ep);
}
{
struct uvc_input_header_descriptor *uvc_streaming_header;
struct uvc_header_descriptor *uvc_control_header;
+ const struct uvc_descriptor_header * const *uvc_control_desc;
const struct uvc_descriptor_header * const *uvc_streaming_cls;
const struct usb_descriptor_header * const *uvc_streaming_std;
const struct usb_descriptor_header * const *src;
+ static struct usb_endpoint_descriptor *uvc_control_ep;
struct usb_descriptor_header **dst;
struct usb_descriptor_header **hdr;
unsigned int control_size;
unsigned int bytes;
void *mem;
- uvc_streaming_cls = (speed == USB_SPEED_FULL)
- ? uvc->desc.fs_streaming : uvc->desc.hs_streaming;
- uvc_streaming_std = (speed == USB_SPEED_FULL)
- ? uvc_fs_streaming : uvc_hs_streaming;
+ switch (speed) {
+ case USB_SPEED_SUPER:
+ uvc_control_desc = uvc->desc.ss_control;
+ uvc_streaming_cls = uvc->desc.ss_streaming;
+ uvc_streaming_std = uvc_ss_streaming;
+ uvc_control_ep = &uvc_ss_control_ep;
+ break;
+
+ case USB_SPEED_HIGH:
+ uvc_control_desc = uvc->desc.fs_control;
+ uvc_streaming_cls = uvc->desc.hs_streaming;
+ uvc_streaming_std = uvc_hs_streaming;
+ uvc_control_ep = &uvc_fs_control_ep;
+ break;
+
+ case USB_SPEED_FULL:
+ default:
+ uvc_control_desc = uvc->desc.fs_control;
+ uvc_streaming_cls = uvc->desc.fs_streaming;
+ uvc_streaming_std = uvc_fs_streaming;
+ uvc_control_ep = &uvc_fs_control_ep;
+ break;
+ }
/* Descriptors layout
*
control_size = 0;
streaming_size = 0;
bytes = uvc_iad.bLength + uvc_control_intf.bLength
- + uvc_control_ep.bLength + uvc_control_cs_ep.bLength
+ + uvc_control_ep->bLength + uvc_control_cs_ep.bLength
+ uvc_streaming_intf_alt0.bLength;
- n_desc = 5;
- for (src = (const struct usb_descriptor_header**)uvc->desc.control; *src; ++src) {
+ if (speed == USB_SPEED_SUPER) {
+ bytes += uvc_ss_control_comp.bLength;
+ n_desc = 6;
+ } else {
+ n_desc = 5;
+ }
+
+ for (src = (const struct usb_descriptor_header **)uvc_control_desc;
+ *src; ++src) {
control_size += (*src)->bLength;
bytes += (*src)->bLength;
n_desc++;
}
- for (src = (const struct usb_descriptor_header**)uvc_streaming_cls; *src; ++src) {
+ for (src = (const struct usb_descriptor_header **)uvc_streaming_cls;
+ *src; ++src) {
streaming_size += (*src)->bLength;
bytes += (*src)->bLength;
n_desc++;
uvc_control_header = mem;
UVC_COPY_DESCRIPTORS(mem, dst,
- (const struct usb_descriptor_header**)uvc->desc.control);
+ (const struct usb_descriptor_header **)uvc_control_desc);
uvc_control_header->wTotalLength = cpu_to_le16(control_size);
uvc_control_header->bInCollection = 1;
uvc_control_header->baInterfaceNr[0] = uvc->streaming_intf;
- UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_ep);
+ UVC_COPY_DESCRIPTOR(mem, dst, uvc_control_ep);
+ if (speed == USB_SPEED_SUPER)
+ UVC_COPY_DESCRIPTOR(mem, dst, &uvc_ss_control_comp);
+
UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_cs_ep);
UVC_COPY_DESCRIPTOR(mem, dst, &uvc_streaming_intf_alt0);
UVC_COPY_DESCRIPTORS(mem, dst,
(const struct usb_descriptor_header**)uvc_streaming_cls);
uvc_streaming_header->wTotalLength = cpu_to_le16(streaming_size);
- uvc_streaming_header->bEndpointAddress = uvc_streaming_ep.bEndpointAddress;
+ uvc_streaming_header->bEndpointAddress =
+ uvc_fs_streaming_ep.bEndpointAddress;
UVC_COPY_DESCRIPTORS(mem, dst, uvc_streaming_std);
kfree(f->descriptors);
kfree(f->hs_descriptors);
+ kfree(f->ss_descriptors);
kfree(uvc);
}
INFO(cdev, "uvc_function_bind\n");
+ /* sanity check the streaming endpoint module parameters */
+ if (streaming_interval < 1)
+ streaming_interval = 1;
+ if (streaming_interval > 16)
+ streaming_interval = 16;
+ if (streaming_mult > 2)
+ streaming_mult = 2;
+ if (streaming_maxburst > 15)
+ streaming_maxburst = 15;
+
+ /*
+ * fill in the FS video streaming specific descriptors from the
+ * module parameters
+ */
+ uvc_fs_streaming_ep.wMaxPacketSize = streaming_maxpacket > 1023 ?
+ 1023 : streaming_maxpacket;
+ uvc_fs_streaming_ep.bInterval = streaming_interval;
+
/* Allocate endpoints. */
- ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep);
+ ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_control_ep);
if (!ep) {
INFO(cdev, "Unable to allocate control EP\n");
goto error;
uvc->control_ep = ep;
ep->driver_data = uvc;
- ep = usb_ep_autoconfig(cdev->gadget, &uvc_streaming_ep);
+ ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_streaming_ep);
if (!ep) {
INFO(cdev, "Unable to allocate streaming EP\n");
goto error;
uvc_streaming_intf_alt1.bInterfaceNumber = ret;
uvc->streaming_intf = ret;
- /* Copy descriptors. */
+ /* sanity check the streaming endpoint module parameters */
+ if (streaming_maxpacket > 1024)
+ streaming_maxpacket = 1024;
+
+ /* Copy descriptors for FS. */
f->descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL);
- f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH);
+
+ /* support high speed hardware */
+ if (gadget_is_dualspeed(cdev->gadget)) {
+ /*
+ * Fill in the HS descriptors from the module parameters for the
+ * Video Streaming endpoint.
+ * NOTE: We assume that the user knows what they are doing and
+ * won't give parameters that their UDC doesn't support.
+ */
+ uvc_hs_streaming_ep.wMaxPacketSize = streaming_maxpacket;
+ uvc_hs_streaming_ep.wMaxPacketSize |= streaming_mult << 11;
+ uvc_hs_streaming_ep.bInterval = streaming_interval;
+ uvc_hs_streaming_ep.bEndpointAddress =
+ uvc_fs_streaming_ep.bEndpointAddress;
+
+ /* Copy descriptors. */
+ f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH);
+ }
+
+ /* support super speed hardware */
+ if (gadget_is_superspeed(c->cdev->gadget)) {
+ /*
+ * Fill in the SS descriptors from the module parameters for the
+ * Video Streaming endpoint.
+ * NOTE: We assume that the user knows what they are doing and
+ * won't give parameters that their UDC doesn't support.
+ */
+ uvc_ss_streaming_ep.wMaxPacketSize = streaming_maxpacket;
+ uvc_ss_streaming_ep.bInterval = streaming_interval;
+ uvc_ss_streaming_comp.bmAttributes = streaming_mult;
+ uvc_ss_streaming_comp.bMaxBurst = streaming_maxburst;
+ uvc_ss_streaming_comp.wBytesPerInterval =
+ streaming_maxpacket * (streaming_mult + 1) *
+ (streaming_maxburst + 1);
+ uvc_ss_streaming_ep.bEndpointAddress =
+ uvc_fs_streaming_ep.bEndpointAddress;
+
+ /* Copy descriptors. */
+ f->ss_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER);
+ }
/* Preallocate control endpoint request. */
uvc->control_req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL);
*/
int __init
uvc_bind_config(struct usb_configuration *c,
- const struct uvc_descriptor_header * const *control,
+ const struct uvc_descriptor_header * const *fs_control,
+ const struct uvc_descriptor_header * const *ss_control,
const struct uvc_descriptor_header * const *fs_streaming,
- const struct uvc_descriptor_header * const *hs_streaming)
+ const struct uvc_descriptor_header * const *hs_streaming,
+ const struct uvc_descriptor_header * const *ss_streaming)
{
struct uvc_device *uvc;
int ret = 0;
uvc->state = UVC_STATE_DISCONNECTED;
/* Validate the descriptors. */
- if (control == NULL || control[0] == NULL ||
- control[0]->bDescriptorSubType != UVC_VC_HEADER)
+ if (fs_control == NULL || fs_control[0] == NULL ||
+ fs_control[0]->bDescriptorSubType != UVC_VC_HEADER)
goto error;
- if (fs_streaming == NULL || fs_streaming[0] == NULL ||
- fs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
+ if (ss_control == NULL || ss_control[0] == NULL ||
+ ss_control[0]->bDescriptorSubType != UVC_VC_HEADER)
goto error;
- if (hs_streaming == NULL || hs_streaming[0] == NULL ||
- hs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
+ if (fs_streaming == NULL || fs_streaming[0] == NULL ||
+ fs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
goto error;
- uvc->desc.control = control;
- uvc->desc.fs_streaming = fs_streaming;
- uvc->desc.hs_streaming = hs_streaming;
-
- /* Allocate string descriptor numbers. */
- if ((ret = usb_string_id(c->cdev)) < 0)
+ if (hs_streaming == NULL || hs_streaming[0] == NULL ||
+ hs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
goto error;
- uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id = ret;
- uvc_iad.iFunction = ret;
- if ((ret = usb_string_id(c->cdev)) < 0)
+ if (ss_streaming == NULL || ss_streaming[0] == NULL ||
+ ss_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER)
goto error;
- uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = ret;
- uvc_control_intf.iInterface = ret;
- if ((ret = usb_string_id(c->cdev)) < 0)
- goto error;
- uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id = ret;
- uvc_streaming_intf_alt0.iInterface = ret;
- uvc_streaming_intf_alt1.iInterface = ret;
+ uvc->desc.fs_control = fs_control;
+ uvc->desc.ss_control = ss_control;
+ uvc->desc.fs_streaming = fs_streaming;
+ uvc->desc.hs_streaming = hs_streaming;
+ uvc->desc.ss_streaming = ss_streaming;
+
+ /* maybe allocate device-global string IDs, and patch descriptors */
+ if (uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id == 0) {
+ /* Allocate string descriptor numbers. */
+ ret = usb_string_id(c->cdev);
+ if (ret < 0)
+ goto error;
+ uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id = ret;
+ uvc_iad.iFunction = ret;
+
+ ret = usb_string_id(c->cdev);
+ if (ret < 0)
+ goto error;
+ uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = ret;
+ uvc_control_intf.iInterface = ret;
+
+ ret = usb_string_id(c->cdev);
+ if (ret < 0)
+ goto error;
+ uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id = ret;
+ uvc_streaming_intf_alt0.iInterface = ret;
+ uvc_streaming_intf_alt1.iInterface = ret;
+ }
/* Register the function. */
uvc->func.name = "uvc";
#include <linux/usb/video.h>
extern int uvc_bind_config(struct usb_configuration *c,
- const struct uvc_descriptor_header * const *control,
- const struct uvc_descriptor_header * const *fs_streaming,
- const struct uvc_descriptor_header * const *hs_streaming);
+ const struct uvc_descriptor_header * const *fs_control,
+ const struct uvc_descriptor_header * const *hs_control,
+ const struct uvc_descriptor_header * const *fs_streaming,
+ const struct uvc_descriptor_header * const *hs_streaming,
+ const struct uvc_descriptor_header * const *ss_streaming);
#endif /* _F_UVC_H_ */
#include <mach/hardware.h>
static struct clk *mxc_ahb_clk;
-static struct clk *mxc_usb_clk;
+static struct clk *mxc_per_clk;
+static struct clk *mxc_ipg_clk;
/* workaround ENGcm09152 for i.MX35 */
#define USBPHYCTRL_OTGBASE_OFFSET 0x608
pdata = pdev->dev.platform_data;
- if (!cpu_is_mx35() && !cpu_is_mx25()) {
- mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb");
- if (IS_ERR(mxc_ahb_clk))
- return PTR_ERR(mxc_ahb_clk);
+ mxc_ipg_clk = devm_clk_get(&pdev->dev, "ipg");
+ if (IS_ERR(mxc_ipg_clk)) {
+ dev_err(&pdev->dev, "clk_get(\"ipg\") failed\n");
+ return PTR_ERR(mxc_ipg_clk);
+ }
- ret = clk_enable(mxc_ahb_clk);
- if (ret < 0) {
- dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n");
- goto eenahb;
- }
+ mxc_ahb_clk = devm_clk_get(&pdev->dev, "ahb");
+ if (IS_ERR(mxc_ahb_clk)) {
+ dev_err(&pdev->dev, "clk_get(\"ahb\") failed\n");
+ return PTR_ERR(mxc_ahb_clk);
}
- /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */
- mxc_usb_clk = clk_get(&pdev->dev, "usb");
- if (IS_ERR(mxc_usb_clk)) {
- dev_err(&pdev->dev, "clk_get(\"usb\") failed\n");
- ret = PTR_ERR(mxc_usb_clk);
- goto egusb;
+ mxc_per_clk = devm_clk_get(&pdev->dev, "per");
+ if (IS_ERR(mxc_per_clk)) {
+ dev_err(&pdev->dev, "clk_get(\"per\") failed\n");
+ return PTR_ERR(mxc_per_clk);
}
+ clk_prepare_enable(mxc_ipg_clk);
+ clk_prepare_enable(mxc_ahb_clk);
+ clk_prepare_enable(mxc_per_clk);
+
+ /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */
if (!cpu_is_mx51()) {
- freq = clk_get_rate(mxc_usb_clk);
+ freq = clk_get_rate(mxc_per_clk);
if (pdata->phy_mode != FSL_USB2_PHY_ULPI &&
(freq < 59999000 || freq > 60001000)) {
dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq);
}
}
- ret = clk_enable(mxc_usb_clk);
- if (ret < 0) {
- dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n");
- goto eenusb;
- }
-
return 0;
-eenusb:
eclkrate:
- clk_put(mxc_usb_clk);
- mxc_usb_clk = NULL;
-egusb:
- if (!cpu_is_mx35())
- clk_disable(mxc_ahb_clk);
-eenahb:
- if (!cpu_is_mx35())
- clk_put(mxc_ahb_clk);
+ clk_disable_unprepare(mxc_ipg_clk);
+ clk_disable_unprepare(mxc_ahb_clk);
+ clk_disable_unprepare(mxc_per_clk);
+ mxc_per_clk = NULL;
return ret;
}
/* ULPI transceivers don't need usbpll */
if (pdata->phy_mode == FSL_USB2_PHY_ULPI) {
- clk_disable(mxc_usb_clk);
- clk_put(mxc_usb_clk);
- mxc_usb_clk = NULL;
+ clk_disable_unprepare(mxc_per_clk);
+ mxc_per_clk = NULL;
}
}
void fsl_udc_clk_release(void)
{
- if (mxc_usb_clk) {
- clk_disable(mxc_usb_clk);
- clk_put(mxc_usb_clk);
- }
- if (!cpu_is_mx35()) {
- clk_disable(mxc_ahb_clk);
- clk_put(mxc_ahb_clk);
- }
+ if (mxc_per_clk)
+ clk_disable_unprepare(mxc_per_clk);
+ clk_disable_unprepare(mxc_ahb_clk);
+ clk_disable_unprepare(mxc_ipg_clk);
}
#include <linux/ioport.h>
#include <linux/types.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/list.h>
struct fsl_udc *udc;
udc = container_of(gadget, struct fsl_udc, gadget);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return usb_phy_set_power(udc->transceiver, mA);
return -ENOTSUPP;
}
goto out;
}
- if (udc_controller->transceiver) {
+ if (!IS_ERR_OR_NULL(udc_controller->transceiver)) {
/* Suspend the controller until OTG enable it */
udc_controller->stopped = 1;
printk(KERN_INFO "Suspend udc for OTG auto detect\n");
/* connect to bus through transceiver */
- if (udc_controller->transceiver) {
+ if (!IS_ERR_OR_NULL(udc_controller->transceiver)) {
retval = otg_set_peripheral(
udc_controller->transceiver->otg,
&udc_controller->gadget);
if (!driver || driver != udc_controller->driver || !driver->unbind)
return -EINVAL;
- if (udc_controller->transceiver)
+ if (!IS_ERR_OR_NULL(udc_controller->transceiver))
otg_set_peripheral(udc_controller->transceiver->otg, NULL);
/* stop DR, disable intr */
#ifdef CONFIG_USB_OTG
if (pdata->operating_mode == FSL_USB2_DR_OTG) {
- udc_controller->transceiver = usb_get_transceiver();
- if (!udc_controller->transceiver) {
+ udc_controller->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(udc_controller->transceiver)) {
ERR("Can't find OTG driver!\n");
ret = -ENODEV;
goto err_kfree;
goto err_free_irq;
}
- if (!udc_controller->transceiver) {
+ if (IS_ERR_OR_NULL(udc_controller->transceiver)) {
/* initialize usb hw reg except for regs for EP,
* leave usbintr reg untouched */
dr_controller_setup(udc_controller);
dev_set_name(&udc_controller->gadget.dev, "gadget");
udc_controller->gadget.dev.release = fsl_udc_release;
udc_controller->gadget.dev.parent = &pdev->dev;
+ udc_controller->gadget.dev.of_node = pdev->dev.of_node;
ret = device_register(&udc_controller->gadget.dev);
if (ret < 0)
goto err_free_irq;
- if (udc_controller->transceiver)
+ if (!IS_ERR_OR_NULL(udc_controller->transceiver))
udc_controller->gadget.is_otg = 1;
/* setup QH and epctrl for ep0 */
dev_err(&pdev->dev, "can't get USB clock\n");
goto fail2;
}
- clk_enable(clk);
+ clk_prepare_enable(clk);
if (clk_get_rate(clk) != 48000000) {
D_INI(&pdev->dev,
free_irq(imx_usb->usbd_int[i], imx_usb);
fail3:
clk_put(clk);
- clk_disable(clk);
+ clk_disable_unprepare(clk);
fail2:
iounmap(base);
fail1:
free_irq(imx_usb->usbd_int[i], imx_usb);
clk_put(imx_usb->clk);
- clk_disable(imx_usb->clk);
+ clk_disable_unprepare(imx_usb->clk);
iounmap(imx_usb->base);
release_mem_region(imx_usb->res->start, resource_size(imx_usb->res));
int udp_irq[4];
struct clk *usb_pll_clk;
struct clk *usb_slv_clk;
+ struct clk *usb_otg_clk;
/* DMA support */
u32 *udca_v_base;
#define UDCA_BUFF_SIZE (128)
/* TODO: When the clock framework is introduced in LPC32xx, IO_ADDRESS will
- * be replaced with an inremap()ed pointer, see USB_OTG_CLK_CTRL()
+ * be replaced with an inremap()ed pointer
* */
#define USB_CTRL IO_ADDRESS(LPC32XX_CLK_PM_BASE + 0x64)
-#define USB_CLOCK_MASK (AHB_M_CLOCK_ON | OTG_CLOCK_ON | \
- DEV_CLOCK_ON | I2C_CLOCK_ON)
/* USB_CTRL bit defines */
#define USB_SLAVE_HCLK_EN (1 << 24)
#define USB_HOST_NEED_CLK_EN (1 << 21)
#define USB_DEV_NEED_CLK_EN (1 << 22)
-#define USB_OTG_CLK_CTRL(udc) ((udc)->udp_baseaddr + 0xFF4)
-#define USB_OTG_CLK_STAT(udc) ((udc)->udp_baseaddr + 0xFF8)
-
-/* USB_OTG_CLK_CTRL bit defines */
-#define AHB_M_CLOCK_ON (1 << 4)
-#define OTG_CLOCK_ON (1 << 3)
-#define I2C_CLOCK_ON (1 << 2)
-#define DEV_CLOCK_ON (1 << 1)
-#define HOST_CLOCK_ON (1 << 0)
-
-#define USB_OTG_STAT_CONTROL(udc) (udc->udp_baseaddr + 0x110)
-
-/* USB_OTG_STAT_CONTROL bit defines */
-#define TRANSPARENT_I2C_EN (1 << 7)
-#define HOST_EN (1 << 0)
-
/**********************************************************************
* USB device controller register offsets
**********************************************************************/
ISP1301_I2C_INTERRUPT_RISING, INT_VBUS_VLD);
/* Enable usb_need_clk clock after transceiver is initialized */
- writel((readl(USB_CTRL) | (1 << 22)), USB_CTRL);
+ writel((readl(USB_CTRL) | USB_DEV_NEED_CLK_EN), USB_CTRL);
dev_info(udc->dev, "ISP1301 Vendor ID : 0x%04x\n",
i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x00));
/* Enables or disables most of the USB system clocks when low power mode is
* needed. Clocks are typically started on a connection event, and disabled
* when a cable is disconnected */
-#define OTGOFF_CLK_MASK (AHB_M_CLOCK_ON | I2C_CLOCK_ON)
static void udc_clk_set(struct lpc32xx_udc *udc, int enable)
{
- int to = 1000;
-
if (enable != 0) {
if (udc->clocked)
return;
writel(readl(USB_CTRL) | USB_DEV_NEED_CLK_EN,
USB_CTRL);
- /* Set to enable all needed USB OTG clocks */
- writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL(udc));
-
- while (((readl(USB_OTG_CLK_STAT(udc)) & USB_CLOCK_MASK) !=
- USB_CLOCK_MASK) && (to > 0))
- to--;
- if (!to)
- dev_dbg(udc->dev, "Cannot enable USB OTG clocking\n");
+ clk_enable(udc->usb_otg_clk);
} else {
if (!udc->clocked)
return;
/* 48MHz PLL dpwn */
clk_disable(udc->usb_pll_clk);
- /* Enable the USB device clock */
+ /* Disable the USB device clock */
writel(readl(USB_CTRL) & ~USB_DEV_NEED_CLK_EN,
USB_CTRL);
- /* Set to enable all needed USB OTG clocks */
- writel(OTGOFF_CLK_MASK, USB_OTG_CLK_CTRL(udc));
-
- while (((readl(USB_OTG_CLK_STAT(udc)) &
- OTGOFF_CLK_MASK) !=
- OTGOFF_CLK_MASK) && (to > 0))
- to--;
- if (!to)
- dev_dbg(udc->dev, "Cannot disable USB OTG clocking\n");
+ clk_disable(udc->usb_otg_clk);
}
}
udc->driver = driver;
udc->gadget.dev.driver = &driver->driver;
+ udc->gadget.dev.of_node = udc->dev->of_node;
udc->enabled = 1;
udc->selfpowered = 1;
udc->vbus = 0;
retval = PTR_ERR(udc->usb_slv_clk);
goto usb_clk_get_fail;
}
+ udc->usb_otg_clk = clk_get(&pdev->dev, "ck_usb_otg");
+ if (IS_ERR(udc->usb_otg_clk)) {
+ dev_err(udc->dev, "failed to acquire USB otg clock\n");
+ retval = PTR_ERR(udc->usb_slv_clk);
+ goto usb_otg_clk_get_fail;
+ }
/* Setup PLL clock to 48MHz */
retval = clk_enable(udc->usb_pll_clk);
goto usb_clk_enable_fail;
}
- /* Set to enable all needed USB OTG clocks */
- writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL(udc));
-
- i = 1000;
- while (((readl(USB_OTG_CLK_STAT(udc)) & USB_CLOCK_MASK) !=
- USB_CLOCK_MASK) && (i > 0))
- i--;
- if (!i)
- dev_dbg(udc->dev, "USB OTG clocks not correctly enabled\n");
+ /* Enable USB OTG clock */
+ retval = clk_enable(udc->usb_otg_clk);
+ if (retval < 0) {
+ dev_err(udc->dev, "failed to start USB otg clock\n");
+ goto usb_otg_clk_enable_fail;
+ }
/* Setup deferred workqueue data */
udc->poweron = udc->pullup = 0;
dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE,
udc->udca_v_base, udc->udca_p_base);
i2c_fail:
+ clk_disable(udc->usb_otg_clk);
+usb_otg_clk_enable_fail:
clk_disable(udc->usb_slv_clk);
usb_clk_enable_fail:
pll_set_fail:
clk_disable(udc->usb_pll_clk);
pll_enable_fail:
clk_put(udc->usb_slv_clk);
+usb_otg_clk_get_fail:
+ clk_put(udc->usb_otg_clk);
usb_clk_get_fail:
clk_put(udc->usb_pll_clk);
pll_get_fail:
device_unregister(&udc->gadget.dev);
+ clk_disable(udc->usb_otg_clk);
+ clk_put(udc->usb_otg_clk);
clk_disable(udc->usb_slv_clk);
clk_put(udc->usb_slv_clk);
clk_disable(udc->usb_pll_clk);
#ifdef CONFIG_PM
static int lpc32xx_udc_suspend(struct platform_device *pdev, pm_message_t mesg)
{
- int to = 1000;
struct lpc32xx_udc *udc = platform_get_drvdata(pdev);
if (udc->clocked) {
on resume */
udc->clocked = 1;
- /* Kill OTG and I2C clocks */
- writel(0, USB_OTG_CLK_CTRL(udc));
- while (((readl(USB_OTG_CLK_STAT(udc)) & OTGOFF_CLK_MASK) !=
- OTGOFF_CLK_MASK) && (to > 0))
- to--;
- if (!to)
- dev_dbg(udc->dev,
- "USB OTG clocks not correctly enabled\n");
-
/* Kill global USB clock */
clk_disable(udc->usb_slv_clk);
}
--- /dev/null
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#ifndef __MV_U3D_H
+#define __MV_U3D_H
+
+#define MV_U3D_EP_CONTEXT_ALIGNMENT 32
+#define MV_U3D_TRB_ALIGNMENT 16
+#define MV_U3D_DMA_BOUNDARY 4096
+#define MV_U3D_EP0_MAX_PKT_SIZE 512
+
+/* ep0 transfer state */
+#define MV_U3D_WAIT_FOR_SETUP 0
+#define MV_U3D_DATA_STATE_XMIT 1
+#define MV_U3D_DATA_STATE_NEED_ZLP 2
+#define MV_U3D_WAIT_FOR_OUT_STATUS 3
+#define MV_U3D_DATA_STATE_RECV 4
+#define MV_U3D_STATUS_STAGE 5
+
+#define MV_U3D_EP_MAX_LENGTH_TRANSFER 0x10000
+
+/* USB3 Interrupt Status */
+#define MV_U3D_USBINT_SETUP 0x00000001
+#define MV_U3D_USBINT_RX_COMPLETE 0x00000002
+#define MV_U3D_USBINT_TX_COMPLETE 0x00000004
+#define MV_U3D_USBINT_UNDER_RUN 0x00000008
+#define MV_U3D_USBINT_RXDESC_ERR 0x00000010
+#define MV_U3D_USBINT_TXDESC_ERR 0x00000020
+#define MV_U3D_USBINT_RX_TRB_COMPLETE 0x00000040
+#define MV_U3D_USBINT_TX_TRB_COMPLETE 0x00000080
+#define MV_U3D_USBINT_VBUS_VALID 0x00010000
+#define MV_U3D_USBINT_STORAGE_CMD_FULL 0x00020000
+#define MV_U3D_USBINT_LINK_CHG 0x01000000
+
+/* USB3 Interrupt Enable */
+#define MV_U3D_INTR_ENABLE_SETUP 0x00000001
+#define MV_U3D_INTR_ENABLE_RX_COMPLETE 0x00000002
+#define MV_U3D_INTR_ENABLE_TX_COMPLETE 0x00000004
+#define MV_U3D_INTR_ENABLE_UNDER_RUN 0x00000008
+#define MV_U3D_INTR_ENABLE_RXDESC_ERR 0x00000010
+#define MV_U3D_INTR_ENABLE_TXDESC_ERR 0x00000020
+#define MV_U3D_INTR_ENABLE_RX_TRB_COMPLETE 0x00000040
+#define MV_U3D_INTR_ENABLE_TX_TRB_COMPLETE 0x00000080
+#define MV_U3D_INTR_ENABLE_RX_BUFFER_ERR 0x00000100
+#define MV_U3D_INTR_ENABLE_VBUS_VALID 0x00010000
+#define MV_U3D_INTR_ENABLE_STORAGE_CMD_FULL 0x00020000
+#define MV_U3D_INTR_ENABLE_LINK_CHG 0x01000000
+#define MV_U3D_INTR_ENABLE_PRIME_STATUS 0x02000000
+
+/* USB3 Link Change */
+#define MV_U3D_LINK_CHANGE_LINK_UP 0x00000001
+#define MV_U3D_LINK_CHANGE_SUSPEND 0x00000002
+#define MV_U3D_LINK_CHANGE_RESUME 0x00000004
+#define MV_U3D_LINK_CHANGE_WRESET 0x00000008
+#define MV_U3D_LINK_CHANGE_HRESET 0x00000010
+#define MV_U3D_LINK_CHANGE_VBUS_INVALID 0x00000020
+#define MV_U3D_LINK_CHANGE_INACT 0x00000040
+#define MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0 0x00000080
+#define MV_U3D_LINK_CHANGE_U1 0x00000100
+#define MV_U3D_LINK_CHANGE_U2 0x00000200
+#define MV_U3D_LINK_CHANGE_U3 0x00000400
+
+/* bridge setting */
+#define MV_U3D_BRIDGE_SETTING_VBUS_VALID (1 << 16)
+
+/* Command Register Bit Masks */
+#define MV_U3D_CMD_RUN_STOP 0x00000001
+#define MV_U3D_CMD_CTRL_RESET 0x00000002
+
+/* ep control register */
+#define MV_U3D_EPXCR_EP_TYPE_CONTROL 0
+#define MV_U3D_EPXCR_EP_TYPE_ISOC 1
+#define MV_U3D_EPXCR_EP_TYPE_BULK 2
+#define MV_U3D_EPXCR_EP_TYPE_INT 3
+#define MV_U3D_EPXCR_EP_ENABLE_SHIFT 4
+#define MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT 12
+#define MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT 16
+#define MV_U3D_USB_BULK_BURST_OUT 6
+#define MV_U3D_USB_BULK_BURST_IN 14
+
+#define MV_U3D_EPXCR_EP_FLUSH (1 << 7)
+#define MV_U3D_EPXCR_EP_HALT (1 << 1)
+#define MV_U3D_EPXCR_EP_INIT (1)
+
+/* TX/RX Status Register */
+#define MV_U3D_XFERSTATUS_COMPLETE_SHIFT 24
+#define MV_U3D_COMPLETE_INVALID 0
+#define MV_U3D_COMPLETE_SUCCESS 1
+#define MV_U3D_COMPLETE_BUFF_ERR 2
+#define MV_U3D_COMPLETE_SHORT_PACKET 3
+#define MV_U3D_COMPLETE_TRB_ERR 5
+#define MV_U3D_XFERSTATUS_TRB_LENGTH_MASK (0xFFFFFF)
+
+#define MV_U3D_USB_LINK_BYPASS_VBUS 0x8
+
+#define MV_U3D_LTSSM_PHY_INIT_DONE 0x80000000
+#define MV_U3D_LTSSM_NEVER_GO_COMPLIANCE 0x40000000
+
+#define MV_U3D_USB3_OP_REGS_OFFSET 0x100
+#define MV_U3D_USB3_PHY_OFFSET 0xB800
+
+#define DCS_ENABLE 0x1
+
+/* timeout */
+#define MV_U3D_RESET_TIMEOUT 10000
+#define MV_U3D_FLUSH_TIMEOUT 100000
+#define MV_U3D_OWN_TIMEOUT 10000
+#define LOOPS_USEC_SHIFT 4
+#define LOOPS_USEC (1 << LOOPS_USEC_SHIFT)
+#define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT)
+
+/* ep direction */
+#define MV_U3D_EP_DIR_IN 1
+#define MV_U3D_EP_DIR_OUT 0
+#define mv_u3d_ep_dir(ep) (((ep)->ep_num == 0) ? \
+ ((ep)->u3d->ep0_dir) : ((ep)->direction))
+
+/* usb capability registers */
+struct mv_u3d_cap_regs {
+ u32 rsvd[5];
+ u32 dboff; /* doorbell register offset */
+ u32 rtsoff; /* runtime register offset */
+ u32 vuoff; /* vendor unique register offset */
+};
+
+/* operation registers */
+struct mv_u3d_op_regs {
+ u32 usbcmd; /* Command register */
+ u32 rsvd1[11];
+ u32 dcbaapl; /* Device Context Base Address low register */
+ u32 dcbaaph; /* Device Context Base Address high register */
+ u32 rsvd2[243];
+ u32 portsc; /* port status and control register*/
+ u32 portlinkinfo; /* port link info register*/
+ u32 rsvd3[9917];
+ u32 doorbell; /* doorbell register */
+};
+
+/* control enpoint enable registers */
+struct epxcr {
+ u32 epxoutcr0; /* ep out control 0 register */
+ u32 epxoutcr1; /* ep out control 1 register */
+ u32 epxincr0; /* ep in control 0 register */
+ u32 epxincr1; /* ep in control 1 register */
+};
+
+/* transfer status registers */
+struct xferstatus {
+ u32 curdeqlo; /* current TRB pointer low */
+ u32 curdeqhi; /* current TRB pointer high */
+ u32 statuslo; /* transfer status low */
+ u32 statushi; /* transfer status high */
+};
+
+/* vendor unique control registers */
+struct mv_u3d_vuc_regs {
+ u32 ctrlepenable; /* control endpoint enable register */
+ u32 setuplock; /* setup lock register */
+ u32 endcomplete; /* endpoint transfer complete register */
+ u32 intrcause; /* interrupt cause register */
+ u32 intrenable; /* interrupt enable register */
+ u32 trbcomplete; /* TRB complete register */
+ u32 linkchange; /* link change register */
+ u32 rsvd1[5];
+ u32 trbunderrun; /* TRB underrun register */
+ u32 rsvd2[43];
+ u32 bridgesetting; /* bridge setting register */
+ u32 rsvd3[7];
+ struct xferstatus txst[16]; /* TX status register */
+ struct xferstatus rxst[16]; /* RX status register */
+ u32 ltssm; /* LTSSM control register */
+ u32 pipe; /* PIPE control register */
+ u32 linkcr0; /* link control 0 register */
+ u32 linkcr1; /* link control 1 register */
+ u32 rsvd6[60];
+ u32 mib0; /* MIB0 counter register */
+ u32 usblink; /* usb link control register */
+ u32 ltssmstate; /* LTSSM state register */
+ u32 linkerrorcause; /* link error cause register */
+ u32 rsvd7[60];
+ u32 devaddrtiebrkr; /* device address and tie breaker */
+ u32 itpinfo0; /* ITP info 0 register */
+ u32 itpinfo1; /* ITP info 1 register */
+ u32 rsvd8[61];
+ struct epxcr epcr[16]; /* ep control register */
+ u32 rsvd9[64];
+ u32 phyaddr; /* PHY address register */
+ u32 phydata; /* PHY data register */
+};
+
+/* Endpoint context structure */
+struct mv_u3d_ep_context {
+ u32 rsvd0;
+ u32 rsvd1;
+ u32 trb_addr_lo; /* TRB address low 32 bit */
+ u32 trb_addr_hi; /* TRB address high 32 bit */
+ u32 rsvd2;
+ u32 rsvd3;
+ struct usb_ctrlrequest setup_buffer; /* setup data buffer */
+};
+
+/* TRB control data structure */
+struct mv_u3d_trb_ctrl {
+ u32 own:1; /* owner of TRB */
+ u32 rsvd1:3;
+ u32 chain:1; /* associate this TRB with the
+ next TRB on the Ring */
+ u32 ioc:1; /* interrupt on complete */
+ u32 rsvd2:4;
+ u32 type:6; /* TRB type */
+#define TYPE_NORMAL 1
+#define TYPE_DATA 3
+#define TYPE_LINK 6
+ u32 dir:1; /* Working at data stage of control endpoint
+ operation. 0 is OUT and 1 is IN. */
+ u32 rsvd3:15;
+};
+
+/* TRB data structure
+ * For multiple TRB, all the TRBs' physical address should be continuous.
+ */
+struct mv_u3d_trb_hw {
+ u32 buf_addr_lo; /* data buffer address low 32 bit */
+ u32 buf_addr_hi; /* data buffer address high 32 bit */
+ u32 trb_len; /* transfer length */
+ struct mv_u3d_trb_ctrl ctrl; /* TRB control data */
+};
+
+/* TRB structure */
+struct mv_u3d_trb {
+ struct mv_u3d_trb_hw *trb_hw; /* point to the trb_hw structure */
+ dma_addr_t trb_dma; /* dma address for this trb_hw */
+ struct list_head trb_list; /* trb list */
+};
+
+/* device data structure */
+struct mv_u3d {
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+ spinlock_t lock; /* device lock */
+ struct completion *done;
+ struct device *dev;
+ int irq;
+
+ /* usb controller registers */
+ struct mv_u3d_cap_regs __iomem *cap_regs;
+ struct mv_u3d_op_regs __iomem *op_regs;
+ struct mv_u3d_vuc_regs __iomem *vuc_regs;
+ void __iomem *phy_regs;
+
+ unsigned int max_eps;
+ struct mv_u3d_ep_context *ep_context;
+ size_t ep_context_size;
+ dma_addr_t ep_context_dma;
+
+ struct dma_pool *trb_pool; /* for TRB data structure */
+ struct mv_u3d_ep *eps;
+
+ struct mv_u3d_req *status_req; /* ep0 status request */
+ struct usb_ctrlrequest local_setup_buff; /* store setup data*/
+
+ unsigned int resume_state; /* USB state to resume */
+ unsigned int usb_state; /* USB current state */
+ unsigned int ep0_state; /* Endpoint zero state */
+ unsigned int ep0_dir;
+
+ unsigned int dev_addr; /* device address */
+
+ unsigned int errors;
+
+ unsigned softconnect:1;
+ unsigned vbus_active:1; /* vbus is active or not */
+ unsigned remote_wakeup:1; /* support remote wakeup */
+ unsigned clock_gating:1; /* clock gating or not */
+ unsigned active:1; /* udc is active or not */
+ unsigned vbus_valid_detect:1; /* udc vbus detection */
+
+ struct mv_usb_addon_irq *vbus;
+ unsigned int power;
+
+ struct clk *clk;
+};
+
+/* endpoint data structure */
+struct mv_u3d_ep {
+ struct usb_ep ep;
+ struct mv_u3d *u3d;
+ struct list_head queue; /* ep request queued hardware */
+ struct list_head req_list; /* list of ep request */
+ struct mv_u3d_ep_context *ep_context; /* ep context */
+ u32 direction;
+ char name[14];
+ u32 processing; /* there is ep request
+ queued on haredware */
+ spinlock_t req_lock; /* ep lock */
+ unsigned wedge:1;
+ unsigned enabled:1;
+ unsigned ep_type:2;
+ unsigned ep_num:8;
+};
+
+/* request data structure */
+struct mv_u3d_req {
+ struct usb_request req;
+ struct mv_u3d_ep *ep;
+ struct list_head queue; /* ep requst queued on hardware */
+ struct list_head list; /* ep request list */
+ struct list_head trb_list; /* trb list of a request */
+
+ struct mv_u3d_trb *trb_head; /* point to first trb of a request */
+ unsigned trb_count; /* TRB number in the chain */
+ unsigned chain; /* TRB chain or not */
+};
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/notifier.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/pm.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/mv_usb.h>
+#include <linux/clk.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+#include <asm/byteorder.h>
+
+#include "mv_u3d.h"
+
+#define DRIVER_DESC "Marvell PXA USB3.0 Device Controller driver"
+
+static const char driver_name[] = "mv_u3d";
+static const char driver_desc[] = DRIVER_DESC;
+
+static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status);
+static void mv_u3d_stop_activity(struct mv_u3d *u3d,
+ struct usb_gadget_driver *driver);
+
+/* for endpoint 0 operations */
+static const struct usb_endpoint_descriptor mv_u3d_ep0_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 0,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+ .wMaxPacketSize = MV_U3D_EP0_MAX_PKT_SIZE,
+};
+
+static void mv_u3d_ep0_reset(struct mv_u3d *u3d)
+{
+ struct mv_u3d_ep *ep;
+ u32 epxcr;
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ ep = &u3d->eps[i];
+ ep->u3d = u3d;
+
+ /* ep0 ep context, ep0 in and out share the same ep context */
+ ep->ep_context = &u3d->ep_context[1];
+ }
+
+ /* reset ep state machine */
+ /* reset ep0 out */
+ epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0);
+ epxcr |= MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0);
+ udelay(5);
+ epxcr &= ~MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0);
+
+ epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE
+ << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT)
+ | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT)
+ | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT)
+ | MV_U3D_EPXCR_EP_TYPE_CONTROL);
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr1);
+
+ /* reset ep0 in */
+ epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxincr0);
+ epxcr |= MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0);
+ udelay(5);
+ epxcr &= ~MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0);
+
+ epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE
+ << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT)
+ | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT)
+ | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT)
+ | MV_U3D_EPXCR_EP_TYPE_CONTROL);
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr1);
+}
+
+static void mv_u3d_ep0_stall(struct mv_u3d *u3d)
+{
+ u32 tmp;
+ dev_dbg(u3d->dev, "%s\n", __func__);
+
+ /* set TX and RX to stall */
+ tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0);
+ tmp |= MV_U3D_EPXCR_EP_HALT;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0);
+
+ tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0);
+ tmp |= MV_U3D_EPXCR_EP_HALT;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0);
+
+ /* update ep0 state */
+ u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP;
+ u3d->ep0_dir = MV_U3D_EP_DIR_OUT;
+}
+
+static int mv_u3d_process_ep_req(struct mv_u3d *u3d, int index,
+ struct mv_u3d_req *curr_req)
+{
+ struct mv_u3d_trb *curr_trb;
+ dma_addr_t cur_deq_lo;
+ struct mv_u3d_ep_context *curr_ep_context;
+ int trb_complete, actual, remaining_length;
+ int direction, ep_num;
+ int retval = 0;
+ u32 tmp, status, length;
+
+ curr_ep_context = &u3d->ep_context[index];
+ direction = index % 2;
+ ep_num = index / 2;
+
+ trb_complete = 0;
+ actual = curr_req->req.length;
+
+ while (!list_empty(&curr_req->trb_list)) {
+ curr_trb = list_entry(curr_req->trb_list.next,
+ struct mv_u3d_trb, trb_list);
+ if (!curr_trb->trb_hw->ctrl.own) {
+ dev_err(u3d->dev, "%s, TRB own error!\n",
+ u3d->eps[index].name);
+ return 1;
+ }
+
+ curr_trb->trb_hw->ctrl.own = 0;
+ if (direction == MV_U3D_EP_DIR_OUT) {
+ tmp = ioread32(&u3d->vuc_regs->rxst[ep_num].statuslo);
+ cur_deq_lo =
+ ioread32(&u3d->vuc_regs->rxst[ep_num].curdeqlo);
+ } else {
+ tmp = ioread32(&u3d->vuc_regs->txst[ep_num].statuslo);
+ cur_deq_lo =
+ ioread32(&u3d->vuc_regs->txst[ep_num].curdeqlo);
+ }
+
+ status = tmp >> MV_U3D_XFERSTATUS_COMPLETE_SHIFT;
+ length = tmp & MV_U3D_XFERSTATUS_TRB_LENGTH_MASK;
+
+ if (status == MV_U3D_COMPLETE_SUCCESS ||
+ (status == MV_U3D_COMPLETE_SHORT_PACKET &&
+ direction == MV_U3D_EP_DIR_OUT)) {
+ remaining_length += length;
+ actual -= remaining_length;
+ } else {
+ dev_err(u3d->dev,
+ "complete_tr error: ep=%d %s: error = 0x%x\n",
+ index >> 1, direction ? "SEND" : "RECV",
+ status);
+ retval = -EPROTO;
+ }
+
+ list_del_init(&curr_trb->trb_list);
+ }
+ if (retval)
+ return retval;
+
+ curr_req->req.actual = actual;
+ return 0;
+}
+
+/*
+ * mv_u3d_done() - retire a request; caller blocked irqs
+ * @status : request status to be set, only works when
+ * request is still in progress.
+ */
+static
+void mv_u3d_done(struct mv_u3d_ep *ep, struct mv_u3d_req *req, int status)
+{
+ struct mv_u3d *u3d = (struct mv_u3d *)ep->u3d;
+
+ dev_dbg(u3d->dev, "mv_u3d_done: remove req->queue\n");
+ /* Removed the req from ep queue */
+ list_del_init(&req->queue);
+
+ /* req.status should be set as -EINPROGRESS in ep_queue() */
+ if (req->req.status == -EINPROGRESS)
+ req->req.status = status;
+ else
+ status = req->req.status;
+
+ /* Free trb for the request */
+ if (!req->chain)
+ dma_pool_free(u3d->trb_pool,
+ req->trb_head->trb_hw, req->trb_head->trb_dma);
+ else {
+ dma_unmap_single(ep->u3d->gadget.dev.parent,
+ (dma_addr_t)req->trb_head->trb_dma,
+ req->trb_count * sizeof(struct mv_u3d_trb_hw),
+ DMA_BIDIRECTIONAL);
+ kfree(req->trb_head->trb_hw);
+ }
+ kfree(req->trb_head);
+
+ usb_gadget_unmap_request(&u3d->gadget, &req->req, mv_u3d_ep_dir(ep));
+
+ if (status && (status != -ESHUTDOWN)) {
+ dev_dbg(u3d->dev, "complete %s req %p stat %d len %u/%u",
+ ep->ep.name, &req->req, status,
+ req->req.actual, req->req.length);
+ }
+
+ spin_unlock(&ep->u3d->lock);
+ /*
+ * complete() is from gadget layer,
+ * eg fsg->bulk_in_complete()
+ */
+ if (req->req.complete)
+ req->req.complete(&ep->ep, &req->req);
+
+ spin_lock(&ep->u3d->lock);
+}
+
+static int mv_u3d_queue_trb(struct mv_u3d_ep *ep, struct mv_u3d_req *req)
+{
+ u32 tmp, direction;
+ struct mv_u3d *u3d;
+ struct mv_u3d_ep_context *ep_context;
+ int retval = 0;
+
+ u3d = ep->u3d;
+ direction = mv_u3d_ep_dir(ep);
+
+ /* ep0 in and out share the same ep context slot 1*/
+ if (ep->ep_num == 0)
+ ep_context = &(u3d->ep_context[1]);
+ else
+ ep_context = &(u3d->ep_context[ep->ep_num * 2 + direction]);
+
+ /* check if the pipe is empty or not */
+ if (!list_empty(&ep->queue)) {
+ dev_err(u3d->dev, "add trb to non-empty queue!\n");
+ retval = -ENOMEM;
+ WARN_ON(1);
+ } else {
+ ep_context->rsvd0 = cpu_to_le32(1);
+ ep_context->rsvd1 = 0;
+
+ /* Configure the trb address and set the DCS bit.
+ * Both DCS bit and own bit in trb should be set.
+ */
+ ep_context->trb_addr_lo =
+ cpu_to_le32(req->trb_head->trb_dma | DCS_ENABLE);
+ ep_context->trb_addr_hi = 0;
+
+ /* Ensure that updates to the EP Context will
+ * occure before Ring Bell.
+ */
+ wmb();
+
+ /* ring bell the ep */
+ if (ep->ep_num == 0)
+ tmp = 0x1;
+ else
+ tmp = ep->ep_num * 2
+ + ((direction == MV_U3D_EP_DIR_OUT) ? 0 : 1);
+
+ iowrite32(tmp, &u3d->op_regs->doorbell);
+ }
+ return retval;
+}
+
+static struct mv_u3d_trb *mv_u3d_build_trb_one(struct mv_u3d_req *req,
+ unsigned *length, dma_addr_t *dma)
+{
+ u32 temp;
+ unsigned int direction;
+ struct mv_u3d_trb *trb;
+ struct mv_u3d_trb_hw *trb_hw;
+ struct mv_u3d *u3d;
+
+ /* how big will this transfer be? */
+ *length = req->req.length - req->req.actual;
+ BUG_ON(*length > (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER);
+
+ u3d = req->ep->u3d;
+
+ trb = kzalloc(sizeof(*trb), GFP_ATOMIC);
+ if (!trb) {
+ dev_err(u3d->dev, "%s, trb alloc fail\n", __func__);
+ return NULL;
+ }
+
+ /*
+ * Be careful that no _GFP_HIGHMEM is set,
+ * or we can not use dma_to_virt
+ * cannot use GFP_KERNEL in spin lock
+ */
+ trb_hw = dma_pool_alloc(u3d->trb_pool, GFP_ATOMIC, dma);
+ if (!trb_hw) {
+ dev_err(u3d->dev,
+ "%s, dma_pool_alloc fail\n", __func__);
+ return NULL;
+ }
+ trb->trb_dma = *dma;
+ trb->trb_hw = trb_hw;
+
+ /* initialize buffer page pointers */
+ temp = (u32)(req->req.dma + req->req.actual);
+
+ trb_hw->buf_addr_lo = cpu_to_le32(temp);
+ trb_hw->buf_addr_hi = 0;
+ trb_hw->trb_len = cpu_to_le32(*length);
+ trb_hw->ctrl.own = 1;
+
+ if (req->ep->ep_num == 0)
+ trb_hw->ctrl.type = TYPE_DATA;
+ else
+ trb_hw->ctrl.type = TYPE_NORMAL;
+
+ req->req.actual += *length;
+
+ direction = mv_u3d_ep_dir(req->ep);
+ if (direction == MV_U3D_EP_DIR_IN)
+ trb_hw->ctrl.dir = 1;
+ else
+ trb_hw->ctrl.dir = 0;
+
+ /* Enable interrupt for the last trb of a request */
+ if (!req->req.no_interrupt)
+ trb_hw->ctrl.ioc = 1;
+
+ trb_hw->ctrl.chain = 0;
+
+ wmb();
+ return trb;
+}
+
+static int mv_u3d_build_trb_chain(struct mv_u3d_req *req, unsigned *length,
+ struct mv_u3d_trb *trb, int *is_last)
+{
+ u32 temp;
+ unsigned int direction;
+ struct mv_u3d *u3d;
+
+ /* how big will this transfer be? */
+ *length = min(req->req.length - req->req.actual,
+ (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER);
+
+ u3d = req->ep->u3d;
+
+ trb->trb_dma = 0;
+
+ /* initialize buffer page pointers */
+ temp = (u32)(req->req.dma + req->req.actual);
+
+ trb->trb_hw->buf_addr_lo = cpu_to_le32(temp);
+ trb->trb_hw->buf_addr_hi = 0;
+ trb->trb_hw->trb_len = cpu_to_le32(*length);
+ trb->trb_hw->ctrl.own = 1;
+
+ if (req->ep->ep_num == 0)
+ trb->trb_hw->ctrl.type = TYPE_DATA;
+ else
+ trb->trb_hw->ctrl.type = TYPE_NORMAL;
+
+ req->req.actual += *length;
+
+ direction = mv_u3d_ep_dir(req->ep);
+ if (direction == MV_U3D_EP_DIR_IN)
+ trb->trb_hw->ctrl.dir = 1;
+ else
+ trb->trb_hw->ctrl.dir = 0;
+
+ /* zlp is needed if req->req.zero is set */
+ if (req->req.zero) {
+ if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0)
+ *is_last = 1;
+ else
+ *is_last = 0;
+ } else if (req->req.length == req->req.actual)
+ *is_last = 1;
+ else
+ *is_last = 0;
+
+ /* Enable interrupt for the last trb of a request */
+ if (*is_last && !req->req.no_interrupt)
+ trb->trb_hw->ctrl.ioc = 1;
+
+ if (*is_last)
+ trb->trb_hw->ctrl.chain = 0;
+ else {
+ trb->trb_hw->ctrl.chain = 1;
+ dev_dbg(u3d->dev, "chain trb\n");
+ }
+
+ wmb();
+
+ return 0;
+}
+
+/* generate TRB linked list for a request
+ * usb controller only supports continous trb chain,
+ * that trb structure physical address should be continous.
+ */
+static int mv_u3d_req_to_trb(struct mv_u3d_req *req)
+{
+ unsigned count;
+ int is_last;
+ struct mv_u3d_trb *trb;
+ struct mv_u3d_trb_hw *trb_hw;
+ struct mv_u3d *u3d;
+ dma_addr_t dma;
+ unsigned length;
+ unsigned trb_num;
+
+ u3d = req->ep->u3d;
+
+ INIT_LIST_HEAD(&req->trb_list);
+
+ length = req->req.length - req->req.actual;
+ /* normally the request transfer length is less than 16KB.
+ * we use buil_trb_one() to optimize it.
+ */
+ if (length <= (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER) {
+ trb = mv_u3d_build_trb_one(req, &count, &dma);
+ list_add_tail(&trb->trb_list, &req->trb_list);
+ req->trb_head = trb;
+ req->trb_count = 1;
+ req->chain = 0;
+ } else {
+ trb_num = length / MV_U3D_EP_MAX_LENGTH_TRANSFER;
+ if (length % MV_U3D_EP_MAX_LENGTH_TRANSFER)
+ trb_num++;
+
+ trb = kcalloc(trb_num, sizeof(*trb), GFP_ATOMIC);
+ if (!trb) {
+ dev_err(u3d->dev,
+ "%s, trb alloc fail\n", __func__);
+ return -ENOMEM;
+ }
+
+ trb_hw = kcalloc(trb_num, sizeof(*trb_hw), GFP_ATOMIC);
+ if (!trb_hw) {
+ dev_err(u3d->dev,
+ "%s, trb_hw alloc fail\n", __func__);
+ return -ENOMEM;
+ }
+
+ do {
+ trb->trb_hw = trb_hw;
+ if (mv_u3d_build_trb_chain(req, &count,
+ trb, &is_last)) {
+ dev_err(u3d->dev,
+ "%s, mv_u3d_build_trb_chain fail\n",
+ __func__);
+ return -EIO;
+ }
+
+ list_add_tail(&trb->trb_list, &req->trb_list);
+ req->trb_count++;
+ trb++;
+ trb_hw++;
+ } while (!is_last);
+
+ req->trb_head = list_entry(req->trb_list.next,
+ struct mv_u3d_trb, trb_list);
+ req->trb_head->trb_dma = dma_map_single(u3d->gadget.dev.parent,
+ req->trb_head->trb_hw,
+ trb_num * sizeof(*trb_hw),
+ DMA_BIDIRECTIONAL);
+
+ req->chain = 1;
+ }
+
+ return 0;
+}
+
+static int
+mv_u3d_start_queue(struct mv_u3d_ep *ep)
+{
+ struct mv_u3d *u3d = ep->u3d;
+ struct mv_u3d_req *req;
+ int ret;
+
+ if (!list_empty(&ep->req_list) && !ep->processing)
+ req = list_entry(ep->req_list.next, struct mv_u3d_req, list);
+ else
+ return 0;
+
+ ep->processing = 1;
+
+ /* set up dma mapping */
+ ret = usb_gadget_map_request(&u3d->gadget, &req->req,
+ mv_u3d_ep_dir(ep));
+ if (ret)
+ return ret;
+
+ req->req.status = -EINPROGRESS;
+ req->req.actual = 0;
+ req->trb_count = 0;
+
+ /* build trbs and push them to device queue */
+ if (!mv_u3d_req_to_trb(req)) {
+ ret = mv_u3d_queue_trb(ep, req);
+ if (ret) {
+ ep->processing = 0;
+ return ret;
+ }
+ } else {
+ ep->processing = 0;
+ dev_err(u3d->dev, "%s, mv_u3d_req_to_trb fail\n", __func__);
+ return -ENOMEM;
+ }
+
+ /* irq handler advances the queue */
+ if (req)
+ list_add_tail(&req->queue, &ep->queue);
+
+ return 0;
+}
+
+static int mv_u3d_ep_enable(struct usb_ep *_ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ struct mv_u3d *u3d;
+ struct mv_u3d_ep *ep;
+ struct mv_u3d_ep_context *ep_context;
+ u16 max = 0;
+ unsigned maxburst = 0;
+ u32 epxcr, direction;
+
+ if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT)
+ return -EINVAL;
+
+ ep = container_of(_ep, struct mv_u3d_ep, ep);
+ u3d = ep->u3d;
+
+ if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN)
+ return -ESHUTDOWN;
+
+ direction = mv_u3d_ep_dir(ep);
+ max = le16_to_cpu(desc->wMaxPacketSize);
+
+ if (!_ep->maxburst)
+ _ep->maxburst = 1;
+ maxburst = _ep->maxburst;
+
+ /* Get the endpoint context address */
+ ep_context = (struct mv_u3d_ep_context *)ep->ep_context;
+
+ /* Set the max burst size */
+ switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ case USB_ENDPOINT_XFER_BULK:
+ if (maxburst > 16) {
+ dev_dbg(u3d->dev,
+ "max burst should not be greater "
+ "than 16 on bulk ep\n");
+ maxburst = 1;
+ _ep->maxburst = maxburst;
+ }
+ dev_dbg(u3d->dev,
+ "maxburst: %d on bulk %s\n", maxburst, ep->name);
+ break;
+ case USB_ENDPOINT_XFER_CONTROL:
+ /* control transfer only supports maxburst as one */
+ maxburst = 1;
+ _ep->maxburst = maxburst;
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ if (maxburst != 1) {
+ dev_dbg(u3d->dev,
+ "max burst should be 1 on int ep "
+ "if transfer size is not 1024\n");
+ maxburst = 1;
+ _ep->maxburst = maxburst;
+ }
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (maxburst != 1) {
+ dev_dbg(u3d->dev,
+ "max burst should be 1 on isoc ep "
+ "if transfer size is not 1024\n");
+ maxburst = 1;
+ _ep->maxburst = maxburst;
+ }
+ break;
+ default:
+ goto en_done;
+ }
+
+ ep->ep.maxpacket = max;
+ ep->ep.desc = desc;
+ ep->enabled = 1;
+
+ /* Enable the endpoint for Rx or Tx and set the endpoint type */
+ if (direction == MV_U3D_EP_DIR_OUT) {
+ epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0);
+ epxcr |= MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0);
+ udelay(5);
+ epxcr &= ~MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0);
+
+ epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT)
+ | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT)
+ | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT)
+ | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK));
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1);
+ } else {
+ epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0);
+ epxcr |= MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0);
+ udelay(5);
+ epxcr &= ~MV_U3D_EPXCR_EP_INIT;
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0);
+
+ epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT)
+ | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT)
+ | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT)
+ | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK));
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1);
+ }
+
+ return 0;
+en_done:
+ return -EINVAL;
+}
+
+static int mv_u3d_ep_disable(struct usb_ep *_ep)
+{
+ struct mv_u3d *u3d;
+ struct mv_u3d_ep *ep;
+ struct mv_u3d_ep_context *ep_context;
+ u32 epxcr, direction;
+
+ if (!_ep)
+ return -EINVAL;
+
+ ep = container_of(_ep, struct mv_u3d_ep, ep);
+ if (!ep->ep.desc)
+ return -EINVAL;
+
+ u3d = ep->u3d;
+
+ /* Get the endpoint context address */
+ ep_context = ep->ep_context;
+
+ direction = mv_u3d_ep_dir(ep);
+
+ /* nuke all pending requests (does flush) */
+ mv_u3d_nuke(ep, -ESHUTDOWN);
+
+ /* Disable the endpoint for Rx or Tx and reset the endpoint type */
+ if (direction == MV_U3D_EP_DIR_OUT) {
+ epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1);
+ epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT)
+ | USB_ENDPOINT_XFERTYPE_MASK);
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1);
+ } else {
+ epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr1);
+ epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT)
+ | USB_ENDPOINT_XFERTYPE_MASK);
+ iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1);
+ }
+
+ ep->enabled = 0;
+
+ ep->ep.desc = NULL;
+ return 0;
+}
+
+static struct usb_request *
+mv_u3d_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
+{
+ struct mv_u3d_req *req = NULL;
+
+ req = kzalloc(sizeof *req, gfp_flags);
+ if (!req)
+ return NULL;
+
+ INIT_LIST_HEAD(&req->queue);
+
+ return &req->req;
+}
+
+static void mv_u3d_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct mv_u3d_req *req = container_of(_req, struct mv_u3d_req, req);
+
+ kfree(req);
+}
+
+static void mv_u3d_ep_fifo_flush(struct usb_ep *_ep)
+{
+ struct mv_u3d *u3d;
+ u32 direction;
+ struct mv_u3d_ep *ep = container_of(_ep, struct mv_u3d_ep, ep);
+ unsigned int loops;
+ u32 tmp;
+
+ /* if endpoint is not enabled, cannot flush endpoint */
+ if (!ep->enabled)
+ return;
+
+ u3d = ep->u3d;
+ direction = mv_u3d_ep_dir(ep);
+
+ /* ep0 need clear bit after flushing fifo. */
+ if (!ep->ep_num) {
+ if (direction == MV_U3D_EP_DIR_OUT) {
+ tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0);
+ tmp |= MV_U3D_EPXCR_EP_FLUSH;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0);
+ udelay(10);
+ tmp &= ~MV_U3D_EPXCR_EP_FLUSH;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0);
+ } else {
+ tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0);
+ tmp |= MV_U3D_EPXCR_EP_FLUSH;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0);
+ udelay(10);
+ tmp &= ~MV_U3D_EPXCR_EP_FLUSH;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0);
+ }
+ return;
+ }
+
+ if (direction == MV_U3D_EP_DIR_OUT) {
+ tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0);
+ tmp |= MV_U3D_EPXCR_EP_FLUSH;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0);
+
+ /* Wait until flushing completed */
+ loops = LOOPS(MV_U3D_FLUSH_TIMEOUT);
+ while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0) &
+ MV_U3D_EPXCR_EP_FLUSH) {
+ /*
+ * EP_FLUSH bit should be cleared to indicate this
+ * operation is complete
+ */
+ if (loops == 0) {
+ dev_dbg(u3d->dev,
+ "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num,
+ direction ? "in" : "out");
+ return;
+ }
+ loops--;
+ udelay(LOOPS_USEC);
+ }
+ } else { /* EP_DIR_IN */
+ tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0);
+ tmp |= MV_U3D_EPXCR_EP_FLUSH;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0);
+
+ /* Wait until flushing completed */
+ loops = LOOPS(MV_U3D_FLUSH_TIMEOUT);
+ while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0) &
+ MV_U3D_EPXCR_EP_FLUSH) {
+ /*
+ * EP_FLUSH bit should be cleared to indicate this
+ * operation is complete
+ */
+ if (loops == 0) {
+ dev_dbg(u3d->dev,
+ "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num,
+ direction ? "in" : "out");
+ return;
+ }
+ loops--;
+ udelay(LOOPS_USEC);
+ }
+ }
+}
+
+/* queues (submits) an I/O request to an endpoint */
+static int
+mv_u3d_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+{
+ struct mv_u3d_ep *ep;
+ struct mv_u3d_req *req;
+ struct mv_u3d *u3d;
+ unsigned long flags;
+ int is_first_req = 0;
+
+ if (unlikely(!_ep || !_req))
+ return -EINVAL;
+
+ ep = container_of(_ep, struct mv_u3d_ep, ep);
+ u3d = ep->u3d;
+
+ req = container_of(_req, struct mv_u3d_req, req);
+
+ if (!ep->ep_num
+ && u3d->ep0_state == MV_U3D_STATUS_STAGE
+ && !_req->length) {
+ dev_dbg(u3d->dev, "ep0 status stage\n");
+ u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP;
+ return 0;
+ }
+
+ dev_dbg(u3d->dev, "%s: %s, req: 0x%x\n",
+ __func__, _ep->name, (u32)req);
+
+ /* catch various bogus parameters */
+ if (!req->req.complete || !req->req.buf
+ || !list_empty(&req->queue)) {
+ dev_err(u3d->dev,
+ "%s, bad params, _req: 0x%x,"
+ "req->req.complete: 0x%x, req->req.buf: 0x%x,"
+ "list_empty: 0x%x\n",
+ __func__, (u32)_req,
+ (u32)req->req.complete, (u32)req->req.buf,
+ (u32)list_empty(&req->queue));
+ return -EINVAL;
+ }
+ if (unlikely(!ep->ep.desc)) {
+ dev_err(u3d->dev, "%s, bad ep\n", __func__);
+ return -EINVAL;
+ }
+ if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+ if (req->req.length > ep->ep.maxpacket)
+ return -EMSGSIZE;
+ }
+
+ if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN) {
+ dev_err(u3d->dev,
+ "bad params of driver/speed\n");
+ return -ESHUTDOWN;
+ }
+
+ req->ep = ep;
+
+ /* Software list handles usb request. */
+ spin_lock_irqsave(&ep->req_lock, flags);
+ is_first_req = list_empty(&ep->req_list);
+ list_add_tail(&req->list, &ep->req_list);
+ spin_unlock_irqrestore(&ep->req_lock, flags);
+ if (!is_first_req) {
+ dev_dbg(u3d->dev, "list is not empty\n");
+ return 0;
+ }
+
+ dev_dbg(u3d->dev, "call mv_u3d_start_queue from usb_ep_queue\n");
+ spin_lock_irqsave(&u3d->lock, flags);
+ mv_u3d_start_queue(ep);
+ spin_unlock_irqrestore(&u3d->lock, flags);
+ return 0;
+}
+
+/* dequeues (cancels, unlinks) an I/O request from an endpoint */
+static int mv_u3d_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct mv_u3d_ep *ep;
+ struct mv_u3d_req *req;
+ struct mv_u3d *u3d;
+ struct mv_u3d_ep_context *ep_context;
+ struct mv_u3d_req *next_req;
+
+ unsigned long flags;
+ int ret = 0;
+
+ if (!_ep || !_req)
+ return -EINVAL;
+
+ ep = container_of(_ep, struct mv_u3d_ep, ep);
+ u3d = ep->u3d;
+
+ spin_lock_irqsave(&ep->u3d->lock, flags);
+
+ /* make sure it's actually queued on this endpoint */
+ list_for_each_entry(req, &ep->queue, queue) {
+ if (&req->req == _req)
+ break;
+ }
+ if (&req->req != _req) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* The request is in progress, or completed but not dequeued */
+ if (ep->queue.next == &req->queue) {
+ _req->status = -ECONNRESET;
+ mv_u3d_ep_fifo_flush(_ep);
+
+ /* The request isn't the last request in this ep queue */
+ if (req->queue.next != &ep->queue) {
+ dev_dbg(u3d->dev,
+ "it is the last request in this ep queue\n");
+ ep_context = ep->ep_context;
+ next_req = list_entry(req->queue.next,
+ struct mv_u3d_req, queue);
+
+ /* Point first TRB of next request to the EP context. */
+ iowrite32((u32) next_req->trb_head,
+ &ep_context->trb_addr_lo);
+ } else {
+ struct mv_u3d_ep_context *ep_context;
+ ep_context = ep->ep_context;
+ ep_context->trb_addr_lo = 0;
+ ep_context->trb_addr_hi = 0;
+ }
+
+ } else
+ WARN_ON(1);
+
+ mv_u3d_done(ep, req, -ECONNRESET);
+
+ /* remove the req from the ep req list */
+ if (!list_empty(&ep->req_list)) {
+ struct mv_u3d_req *curr_req;
+ curr_req = list_entry(ep->req_list.next,
+ struct mv_u3d_req, list);
+ if (curr_req == req) {
+ list_del_init(&req->list);
+ ep->processing = 0;
+ }
+ }
+
+out:
+ spin_unlock_irqrestore(&ep->u3d->lock, flags);
+ return ret;
+}
+
+static void
+mv_u3d_ep_set_stall(struct mv_u3d *u3d, u8 ep_num, u8 direction, int stall)
+{
+ u32 tmp;
+ struct mv_u3d_ep *ep = u3d->eps;
+
+ dev_dbg(u3d->dev, "%s\n", __func__);
+ if (direction == MV_U3D_EP_DIR_OUT) {
+ tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0);
+ if (stall)
+ tmp |= MV_U3D_EPXCR_EP_HALT;
+ else
+ tmp &= ~MV_U3D_EPXCR_EP_HALT;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0);
+ } else {
+ tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0);
+ if (stall)
+ tmp |= MV_U3D_EPXCR_EP_HALT;
+ else
+ tmp &= ~MV_U3D_EPXCR_EP_HALT;
+ iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0);
+ }
+}
+
+static int mv_u3d_ep_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge)
+{
+ struct mv_u3d_ep *ep;
+ unsigned long flags = 0;
+ int status = 0;
+ struct mv_u3d *u3d;
+
+ ep = container_of(_ep, struct mv_u3d_ep, ep);
+ u3d = ep->u3d;
+ if (!ep->ep.desc) {
+ status = -EINVAL;
+ goto out;
+ }
+
+ if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+ status = -EOPNOTSUPP;
+ goto out;
+ }
+
+ /*
+ * Attempt to halt IN ep will fail if any transfer requests
+ * are still queue
+ */
+ if (halt && (mv_u3d_ep_dir(ep) == MV_U3D_EP_DIR_IN)
+ && !list_empty(&ep->queue)) {
+ status = -EAGAIN;
+ goto out;
+ }
+
+ spin_lock_irqsave(&ep->u3d->lock, flags);
+ mv_u3d_ep_set_stall(u3d, ep->ep_num, mv_u3d_ep_dir(ep), halt);
+ if (halt && wedge)
+ ep->wedge = 1;
+ else if (!halt)
+ ep->wedge = 0;
+ spin_unlock_irqrestore(&ep->u3d->lock, flags);
+
+ if (ep->ep_num == 0)
+ u3d->ep0_dir = MV_U3D_EP_DIR_OUT;
+out:
+ return status;
+}
+
+static int mv_u3d_ep_set_halt(struct usb_ep *_ep, int halt)
+{
+ return mv_u3d_ep_set_halt_wedge(_ep, halt, 0);
+}
+
+static int mv_u3d_ep_set_wedge(struct usb_ep *_ep)
+{
+ return mv_u3d_ep_set_halt_wedge(_ep, 1, 1);
+}
+
+static struct usb_ep_ops mv_u3d_ep_ops = {
+ .enable = mv_u3d_ep_enable,
+ .disable = mv_u3d_ep_disable,
+
+ .alloc_request = mv_u3d_alloc_request,
+ .free_request = mv_u3d_free_request,
+
+ .queue = mv_u3d_ep_queue,
+ .dequeue = mv_u3d_ep_dequeue,
+
+ .set_wedge = mv_u3d_ep_set_wedge,
+ .set_halt = mv_u3d_ep_set_halt,
+ .fifo_flush = mv_u3d_ep_fifo_flush,
+};
+
+static void mv_u3d_controller_stop(struct mv_u3d *u3d)
+{
+ u32 tmp;
+
+ if (!u3d->clock_gating && u3d->vbus_valid_detect)
+ iowrite32(MV_U3D_INTR_ENABLE_VBUS_VALID,
+ &u3d->vuc_regs->intrenable);
+ else
+ iowrite32(0, &u3d->vuc_regs->intrenable);
+ iowrite32(~0x0, &u3d->vuc_regs->endcomplete);
+ iowrite32(~0x0, &u3d->vuc_regs->trbunderrun);
+ iowrite32(~0x0, &u3d->vuc_regs->trbcomplete);
+ iowrite32(~0x0, &u3d->vuc_regs->linkchange);
+ iowrite32(0x1, &u3d->vuc_regs->setuplock);
+
+ /* Reset the RUN bit in the command register to stop USB */
+ tmp = ioread32(&u3d->op_regs->usbcmd);
+ tmp &= ~MV_U3D_CMD_RUN_STOP;
+ iowrite32(tmp, &u3d->op_regs->usbcmd);
+ dev_dbg(u3d->dev, "after u3d_stop, USBCMD 0x%x\n",
+ ioread32(&u3d->op_regs->usbcmd));
+}
+
+static void mv_u3d_controller_start(struct mv_u3d *u3d)
+{
+ u32 usbintr;
+ u32 temp;
+
+ /* enable link LTSSM state machine */
+ temp = ioread32(&u3d->vuc_regs->ltssm);
+ temp |= MV_U3D_LTSSM_PHY_INIT_DONE;
+ iowrite32(temp, &u3d->vuc_regs->ltssm);
+
+ /* Enable interrupts */
+ usbintr = MV_U3D_INTR_ENABLE_LINK_CHG | MV_U3D_INTR_ENABLE_TXDESC_ERR |
+ MV_U3D_INTR_ENABLE_RXDESC_ERR | MV_U3D_INTR_ENABLE_TX_COMPLETE |
+ MV_U3D_INTR_ENABLE_RX_COMPLETE | MV_U3D_INTR_ENABLE_SETUP |
+ (u3d->vbus_valid_detect ? MV_U3D_INTR_ENABLE_VBUS_VALID : 0);
+ iowrite32(usbintr, &u3d->vuc_regs->intrenable);
+
+ /* Enable ctrl ep */
+ iowrite32(0x1, &u3d->vuc_regs->ctrlepenable);
+
+ /* Set the Run bit in the command register */
+ iowrite32(MV_U3D_CMD_RUN_STOP, &u3d->op_regs->usbcmd);
+ dev_dbg(u3d->dev, "after u3d_start, USBCMD 0x%x\n",
+ ioread32(&u3d->op_regs->usbcmd));
+}
+
+static int mv_u3d_controller_reset(struct mv_u3d *u3d)
+{
+ unsigned int loops;
+ u32 tmp;
+
+ /* Stop the controller */
+ tmp = ioread32(&u3d->op_regs->usbcmd);
+ tmp &= ~MV_U3D_CMD_RUN_STOP;
+ iowrite32(tmp, &u3d->op_regs->usbcmd);
+
+ /* Reset the controller to get default values */
+ iowrite32(MV_U3D_CMD_CTRL_RESET, &u3d->op_regs->usbcmd);
+
+ /* wait for reset to complete */
+ loops = LOOPS(MV_U3D_RESET_TIMEOUT);
+ while (ioread32(&u3d->op_regs->usbcmd) & MV_U3D_CMD_CTRL_RESET) {
+ if (loops == 0) {
+ dev_err(u3d->dev,
+ "Wait for RESET completed TIMEOUT\n");
+ return -ETIMEDOUT;
+ }
+ loops--;
+ udelay(LOOPS_USEC);
+ }
+
+ /* Configure the Endpoint Context Address */
+ iowrite32(u3d->ep_context_dma, &u3d->op_regs->dcbaapl);
+ iowrite32(0, &u3d->op_regs->dcbaaph);
+
+ return 0;
+}
+
+static int mv_u3d_enable(struct mv_u3d *u3d)
+{
+ struct mv_usb_platform_data *pdata = u3d->dev->platform_data;
+ int retval;
+
+ if (u3d->active)
+ return 0;
+
+ if (!u3d->clock_gating) {
+ u3d->active = 1;
+ return 0;
+ }
+
+ dev_dbg(u3d->dev, "enable u3d\n");
+ clk_enable(u3d->clk);
+ if (pdata->phy_init) {
+ retval = pdata->phy_init(u3d->phy_regs);
+ if (retval) {
+ dev_err(u3d->dev,
+ "init phy error %d\n", retval);
+ clk_disable(u3d->clk);
+ return retval;
+ }
+ }
+ u3d->active = 1;
+
+ return 0;
+}
+
+static void mv_u3d_disable(struct mv_u3d *u3d)
+{
+ struct mv_usb_platform_data *pdata = u3d->dev->platform_data;
+ if (u3d->clock_gating && u3d->active) {
+ dev_dbg(u3d->dev, "disable u3d\n");
+ if (pdata->phy_deinit)
+ pdata->phy_deinit(u3d->phy_regs);
+ clk_disable(u3d->clk);
+ u3d->active = 0;
+ }
+}
+
+static int mv_u3d_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+ struct mv_u3d *u3d;
+ unsigned long flags;
+ int retval = 0;
+
+ u3d = container_of(gadget, struct mv_u3d, gadget);
+
+ spin_lock_irqsave(&u3d->lock, flags);
+
+ u3d->vbus_active = (is_active != 0);
+ dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n",
+ __func__, u3d->softconnect, u3d->vbus_active);
+ /*
+ * 1. external VBUS detect: we can disable/enable clock on demand.
+ * 2. UDC VBUS detect: we have to enable clock all the time.
+ * 3. No VBUS detect: we have to enable clock all the time.
+ */
+ if (u3d->driver && u3d->softconnect && u3d->vbus_active) {
+ retval = mv_u3d_enable(u3d);
+ if (retval == 0) {
+ /*
+ * after clock is disabled, we lost all the register
+ * context. We have to re-init registers
+ */
+ mv_u3d_controller_reset(u3d);
+ mv_u3d_ep0_reset(u3d);
+ mv_u3d_controller_start(u3d);
+ }
+ } else if (u3d->driver && u3d->softconnect) {
+ if (!u3d->active)
+ goto out;
+
+ /* stop all the transfer in queue*/
+ mv_u3d_stop_activity(u3d, u3d->driver);
+ mv_u3d_controller_stop(u3d);
+ mv_u3d_disable(u3d);
+ }
+
+out:
+ spin_unlock_irqrestore(&u3d->lock, flags);
+ return retval;
+}
+
+/* constrain controller's VBUS power usage
+ * This call is used by gadget drivers during SET_CONFIGURATION calls,
+ * reporting how much power the device may consume. For example, this
+ * could affect how quickly batteries are recharged.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static int mv_u3d_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+ struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget);
+
+ u3d->power = mA;
+
+ return 0;
+}
+
+static int mv_u3d_pullup(struct usb_gadget *gadget, int is_on)
+{
+ struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget);
+ unsigned long flags;
+ int retval = 0;
+
+ spin_lock_irqsave(&u3d->lock, flags);
+
+ dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n",
+ __func__, u3d->softconnect, u3d->vbus_active);
+ u3d->softconnect = (is_on != 0);
+ if (u3d->driver && u3d->softconnect && u3d->vbus_active) {
+ retval = mv_u3d_enable(u3d);
+ if (retval == 0) {
+ /*
+ * after clock is disabled, we lost all the register
+ * context. We have to re-init registers
+ */
+ mv_u3d_controller_reset(u3d);
+ mv_u3d_ep0_reset(u3d);
+ mv_u3d_controller_start(u3d);
+ }
+ } else if (u3d->driver && u3d->vbus_active) {
+ /* stop all the transfer in queue*/
+ mv_u3d_stop_activity(u3d, u3d->driver);
+ mv_u3d_controller_stop(u3d);
+ mv_u3d_disable(u3d);
+ }
+
+ spin_unlock_irqrestore(&u3d->lock, flags);
+
+ return retval;
+}
+
+static int mv_u3d_start(struct usb_gadget *g,
+ struct usb_gadget_driver *driver)
+{
+ struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget);
+ struct mv_usb_platform_data *pdata = u3d->dev->platform_data;
+ unsigned long flags;
+
+ if (u3d->driver)
+ return -EBUSY;
+
+ spin_lock_irqsave(&u3d->lock, flags);
+
+ if (!u3d->clock_gating) {
+ clk_enable(u3d->clk);
+ if (pdata->phy_init)
+ pdata->phy_init(u3d->phy_regs);
+ }
+
+ /* hook up the driver ... */
+ driver->driver.bus = NULL;
+ u3d->driver = driver;
+ u3d->gadget.dev.driver = &driver->driver;
+
+ u3d->ep0_dir = USB_DIR_OUT;
+
+ spin_unlock_irqrestore(&u3d->lock, flags);
+
+ u3d->vbus_valid_detect = 1;
+
+ return 0;
+}
+
+static int mv_u3d_stop(struct usb_gadget *g,
+ struct usb_gadget_driver *driver)
+{
+ struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget);
+ struct mv_usb_platform_data *pdata = u3d->dev->platform_data;
+ unsigned long flags;
+
+ u3d->vbus_valid_detect = 0;
+ spin_lock_irqsave(&u3d->lock, flags);
+
+ /* enable clock to access controller register */
+ clk_enable(u3d->clk);
+ if (pdata->phy_init)
+ pdata->phy_init(u3d->phy_regs);
+
+ mv_u3d_controller_stop(u3d);
+ /* stop all usb activities */
+ u3d->gadget.speed = USB_SPEED_UNKNOWN;
+ mv_u3d_stop_activity(u3d, driver);
+ mv_u3d_disable(u3d);
+
+ if (pdata->phy_deinit)
+ pdata->phy_deinit(u3d->phy_regs);
+ clk_disable(u3d->clk);
+
+ spin_unlock_irqrestore(&u3d->lock, flags);
+
+ u3d->gadget.dev.driver = NULL;
+ u3d->driver = NULL;
+
+ return 0;
+}
+
+/* device controller usb_gadget_ops structure */
+static const struct usb_gadget_ops mv_u3d_ops = {
+ /* notify controller that VBUS is powered or not */
+ .vbus_session = mv_u3d_vbus_session,
+
+ /* constrain controller's VBUS power usage */
+ .vbus_draw = mv_u3d_vbus_draw,
+
+ .pullup = mv_u3d_pullup,
+ .udc_start = mv_u3d_start,
+ .udc_stop = mv_u3d_stop,
+};
+
+static int mv_u3d_eps_init(struct mv_u3d *u3d)
+{
+ struct mv_u3d_ep *ep;
+ char name[14];
+ int i;
+
+ /* initialize ep0, ep0 in/out use eps[1] */
+ ep = &u3d->eps[1];
+ ep->u3d = u3d;
+ strncpy(ep->name, "ep0", sizeof(ep->name));
+ ep->ep.name = ep->name;
+ ep->ep.ops = &mv_u3d_ep_ops;
+ ep->wedge = 0;
+ ep->ep.maxpacket = MV_U3D_EP0_MAX_PKT_SIZE;
+ ep->ep_num = 0;
+ ep->ep.desc = &mv_u3d_ep0_desc;
+ INIT_LIST_HEAD(&ep->queue);
+ INIT_LIST_HEAD(&ep->req_list);
+ ep->ep_type = USB_ENDPOINT_XFER_CONTROL;
+
+ /* add ep0 ep_context */
+ ep->ep_context = &u3d->ep_context[1];
+
+ /* initialize other endpoints */
+ for (i = 2; i < u3d->max_eps * 2; i++) {
+ ep = &u3d->eps[i];
+ if (i & 1) {
+ snprintf(name, sizeof(name), "ep%din", i >> 1);
+ ep->direction = MV_U3D_EP_DIR_IN;
+ } else {
+ snprintf(name, sizeof(name), "ep%dout", i >> 1);
+ ep->direction = MV_U3D_EP_DIR_OUT;
+ }
+ ep->u3d = u3d;
+ strncpy(ep->name, name, sizeof(ep->name));
+ ep->ep.name = ep->name;
+
+ ep->ep.ops = &mv_u3d_ep_ops;
+ ep->ep.maxpacket = (unsigned short) ~0;
+ ep->ep_num = i / 2;
+
+ INIT_LIST_HEAD(&ep->queue);
+ list_add_tail(&ep->ep.ep_list, &u3d->gadget.ep_list);
+
+ INIT_LIST_HEAD(&ep->req_list);
+ spin_lock_init(&ep->req_lock);
+ ep->ep_context = &u3d->ep_context[i];
+ }
+
+ return 0;
+}
+
+/* delete all endpoint requests, called with spinlock held */
+static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status)
+{
+ /* endpoint fifo flush */
+ mv_u3d_ep_fifo_flush(&ep->ep);
+
+ while (!list_empty(&ep->queue)) {
+ struct mv_u3d_req *req = NULL;
+ req = list_entry(ep->queue.next, struct mv_u3d_req, queue);
+ mv_u3d_done(ep, req, status);
+ }
+}
+
+/* stop all USB activities */
+static
+void mv_u3d_stop_activity(struct mv_u3d *u3d, struct usb_gadget_driver *driver)
+{
+ struct mv_u3d_ep *ep;
+
+ mv_u3d_nuke(&u3d->eps[1], -ESHUTDOWN);
+
+ list_for_each_entry(ep, &u3d->gadget.ep_list, ep.ep_list) {
+ mv_u3d_nuke(ep, -ESHUTDOWN);
+ }
+
+ /* report disconnect; the driver is already quiesced */
+ if (driver) {
+ spin_unlock(&u3d->lock);
+ driver->disconnect(&u3d->gadget);
+ spin_lock(&u3d->lock);
+ }
+}
+
+static void mv_u3d_irq_process_error(struct mv_u3d *u3d)
+{
+ /* Increment the error count */
+ u3d->errors++;
+ dev_err(u3d->dev, "%s\n", __func__);
+}
+
+static void mv_u3d_irq_process_link_change(struct mv_u3d *u3d)
+{
+ u32 linkchange;
+
+ linkchange = ioread32(&u3d->vuc_regs->linkchange);
+ iowrite32(linkchange, &u3d->vuc_regs->linkchange);
+
+ dev_dbg(u3d->dev, "linkchange: 0x%x\n", linkchange);
+
+ if (linkchange & MV_U3D_LINK_CHANGE_LINK_UP) {
+ dev_dbg(u3d->dev, "link up: ltssm state: 0x%x\n",
+ ioread32(&u3d->vuc_regs->ltssmstate));
+
+ u3d->usb_state = USB_STATE_DEFAULT;
+ u3d->ep0_dir = MV_U3D_EP_DIR_OUT;
+ u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP;
+
+ /* set speed */
+ u3d->gadget.speed = USB_SPEED_SUPER;
+ }
+
+ if (linkchange & MV_U3D_LINK_CHANGE_SUSPEND) {
+ dev_dbg(u3d->dev, "link suspend\n");
+ u3d->resume_state = u3d->usb_state;
+ u3d->usb_state = USB_STATE_SUSPENDED;
+ }
+
+ if (linkchange & MV_U3D_LINK_CHANGE_RESUME) {
+ dev_dbg(u3d->dev, "link resume\n");
+ u3d->usb_state = u3d->resume_state;
+ u3d->resume_state = 0;
+ }
+
+ if (linkchange & MV_U3D_LINK_CHANGE_WRESET) {
+ dev_dbg(u3d->dev, "warm reset\n");
+ u3d->usb_state = USB_STATE_POWERED;
+ }
+
+ if (linkchange & MV_U3D_LINK_CHANGE_HRESET) {
+ dev_dbg(u3d->dev, "hot reset\n");
+ u3d->usb_state = USB_STATE_DEFAULT;
+ }
+
+ if (linkchange & MV_U3D_LINK_CHANGE_INACT)
+ dev_dbg(u3d->dev, "inactive\n");
+
+ if (linkchange & MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0)
+ dev_dbg(u3d->dev, "ss.disabled\n");
+
+ if (linkchange & MV_U3D_LINK_CHANGE_VBUS_INVALID) {
+ dev_dbg(u3d->dev, "vbus invalid\n");
+ u3d->usb_state = USB_STATE_ATTACHED;
+ u3d->vbus_valid_detect = 1;
+ /* if external vbus detect is not supported,
+ * we handle it here.
+ */
+ if (!u3d->vbus) {
+ spin_unlock(&u3d->lock);
+ mv_u3d_vbus_session(&u3d->gadget, 0);
+ spin_lock(&u3d->lock);
+ }
+ }
+}
+
+static void mv_u3d_ch9setaddress(struct mv_u3d *u3d,
+ struct usb_ctrlrequest *setup)
+{
+ u32 tmp;
+
+ if (u3d->usb_state != USB_STATE_DEFAULT) {
+ dev_err(u3d->dev,
+ "%s, cannot setaddr in this state (%d)\n",
+ __func__, u3d->usb_state);
+ goto err;
+ }
+
+ u3d->dev_addr = (u8)setup->wValue;
+
+ dev_dbg(u3d->dev, "%s: 0x%x\n", __func__, u3d->dev_addr);
+
+ if (u3d->dev_addr > 127) {
+ dev_err(u3d->dev,
+ "%s, u3d address is wrong (out of range)\n", __func__);
+ u3d->dev_addr = 0;
+ goto err;
+ }
+
+ /* update usb state */
+ u3d->usb_state = USB_STATE_ADDRESS;
+
+ /* set the new address */
+ tmp = ioread32(&u3d->vuc_regs->devaddrtiebrkr);
+ tmp &= ~0x7F;
+ tmp |= (u32)u3d->dev_addr;
+ iowrite32(tmp, &u3d->vuc_regs->devaddrtiebrkr);
+
+ return;
+err:
+ mv_u3d_ep0_stall(u3d);
+}
+
+static int mv_u3d_is_set_configuration(struct usb_ctrlrequest *setup)
+{
+ if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD)
+ if (setup->bRequest == USB_REQ_SET_CONFIGURATION)
+ return 1;
+
+ return 0;
+}
+
+static void mv_u3d_handle_setup_packet(struct mv_u3d *u3d, u8 ep_num,
+ struct usb_ctrlrequest *setup)
+{
+ bool delegate = false;
+
+ mv_u3d_nuke(&u3d->eps[ep_num * 2 + MV_U3D_EP_DIR_IN], -ESHUTDOWN);
+
+ dev_dbg(u3d->dev, "SETUP %02x.%02x v%04x i%04x l%04x\n",
+ setup->bRequestType, setup->bRequest,
+ setup->wValue, setup->wIndex, setup->wLength);
+
+ /* We process some stardard setup requests here */
+ if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
+ switch (setup->bRequest) {
+ case USB_REQ_GET_STATUS:
+ delegate = true;
+ break;
+
+ case USB_REQ_SET_ADDRESS:
+ mv_u3d_ch9setaddress(u3d, setup);
+ break;
+
+ case USB_REQ_CLEAR_FEATURE:
+ delegate = true;
+ break;
+
+ case USB_REQ_SET_FEATURE:
+ delegate = true;
+ break;
+
+ default:
+ delegate = true;
+ }
+ } else
+ delegate = true;
+
+ /* delegate USB standard requests to the gadget driver */
+ if (delegate == true) {
+ /* USB requests handled by gadget */
+ if (setup->wLength) {
+ /* DATA phase from gadget, STATUS phase from u3d */
+ u3d->ep0_dir = (setup->bRequestType & USB_DIR_IN)
+ ? MV_U3D_EP_DIR_IN : MV_U3D_EP_DIR_OUT;
+ spin_unlock(&u3d->lock);
+ if (u3d->driver->setup(&u3d->gadget,
+ &u3d->local_setup_buff) < 0) {
+ dev_err(u3d->dev, "setup error!\n");
+ mv_u3d_ep0_stall(u3d);
+ }
+ spin_lock(&u3d->lock);
+ } else {
+ /* no DATA phase, STATUS phase from gadget */
+ u3d->ep0_dir = MV_U3D_EP_DIR_IN;
+ u3d->ep0_state = MV_U3D_STATUS_STAGE;
+ spin_unlock(&u3d->lock);
+ if (u3d->driver->setup(&u3d->gadget,
+ &u3d->local_setup_buff) < 0)
+ mv_u3d_ep0_stall(u3d);
+ spin_lock(&u3d->lock);
+ }
+
+ if (mv_u3d_is_set_configuration(setup)) {
+ dev_dbg(u3d->dev, "u3d configured\n");
+ u3d->usb_state = USB_STATE_CONFIGURED;
+ }
+ }
+}
+
+static void mv_u3d_get_setup_data(struct mv_u3d *u3d, u8 ep_num, u8 *buffer_ptr)
+{
+ struct mv_u3d_ep_context *epcontext;
+
+ epcontext = &u3d->ep_context[ep_num * 2 + MV_U3D_EP_DIR_IN];
+
+ /* Copy the setup packet to local buffer */
+ memcpy(buffer_ptr, (u8 *) &epcontext->setup_buffer, 8);
+}
+
+static void mv_u3d_irq_process_setup(struct mv_u3d *u3d)
+{
+ u32 tmp, i;
+ /* Process all Setup packet received interrupts */
+ tmp = ioread32(&u3d->vuc_regs->setuplock);
+ if (tmp) {
+ for (i = 0; i < u3d->max_eps; i++) {
+ if (tmp & (1 << i)) {
+ mv_u3d_get_setup_data(u3d, i,
+ (u8 *)(&u3d->local_setup_buff));
+ mv_u3d_handle_setup_packet(u3d, i,
+ &u3d->local_setup_buff);
+ }
+ }
+ }
+
+ iowrite32(tmp, &u3d->vuc_regs->setuplock);
+}
+
+static void mv_u3d_irq_process_tr_complete(struct mv_u3d *u3d)
+{
+ u32 tmp, bit_pos;
+ int i, ep_num = 0, direction = 0;
+ struct mv_u3d_ep *curr_ep;
+ struct mv_u3d_req *curr_req, *temp_req;
+ int status;
+
+ tmp = ioread32(&u3d->vuc_regs->endcomplete);
+
+ dev_dbg(u3d->dev, "tr_complete: ep: 0x%x\n", tmp);
+ if (!tmp)
+ return;
+ iowrite32(tmp, &u3d->vuc_regs->endcomplete);
+
+ for (i = 0; i < u3d->max_eps * 2; i++) {
+ ep_num = i >> 1;
+ direction = i % 2;
+
+ bit_pos = 1 << (ep_num + 16 * direction);
+
+ if (!(bit_pos & tmp))
+ continue;
+
+ if (i == 0)
+ curr_ep = &u3d->eps[1];
+ else
+ curr_ep = &u3d->eps[i];
+
+ /* remove req out of ep request list after completion */
+ dev_dbg(u3d->dev, "tr comp: check req_list\n");
+ spin_lock(&curr_ep->req_lock);
+ if (!list_empty(&curr_ep->req_list)) {
+ struct mv_u3d_req *req;
+ req = list_entry(curr_ep->req_list.next,
+ struct mv_u3d_req, list);
+ list_del_init(&req->list);
+ curr_ep->processing = 0;
+ }
+ spin_unlock(&curr_ep->req_lock);
+
+ /* process the req queue until an uncomplete request */
+ list_for_each_entry_safe(curr_req, temp_req,
+ &curr_ep->queue, queue) {
+ status = mv_u3d_process_ep_req(u3d, i, curr_req);
+ if (status)
+ break;
+ /* write back status to req */
+ curr_req->req.status = status;
+
+ /* ep0 request completion */
+ if (ep_num == 0) {
+ mv_u3d_done(curr_ep, curr_req, 0);
+ break;
+ } else {
+ mv_u3d_done(curr_ep, curr_req, status);
+ }
+ }
+
+ dev_dbg(u3d->dev, "call mv_u3d_start_queue from ep complete\n");
+ mv_u3d_start_queue(curr_ep);
+ }
+}
+
+static irqreturn_t mv_u3d_irq(int irq, void *dev)
+{
+ struct mv_u3d *u3d = (struct mv_u3d *)dev;
+ u32 status, intr;
+ u32 bridgesetting;
+ u32 trbunderrun;
+
+ spin_lock(&u3d->lock);
+
+ status = ioread32(&u3d->vuc_regs->intrcause);
+ intr = ioread32(&u3d->vuc_regs->intrenable);
+ status &= intr;
+
+ if (status == 0) {
+ spin_unlock(&u3d->lock);
+ dev_err(u3d->dev, "irq error!\n");
+ return IRQ_NONE;
+ }
+
+ if (status & MV_U3D_USBINT_VBUS_VALID) {
+ bridgesetting = ioread32(&u3d->vuc_regs->bridgesetting);
+ if (bridgesetting & MV_U3D_BRIDGE_SETTING_VBUS_VALID) {
+ /* write vbus valid bit of bridge setting to clear */
+ bridgesetting = MV_U3D_BRIDGE_SETTING_VBUS_VALID;
+ iowrite32(bridgesetting, &u3d->vuc_regs->bridgesetting);
+ dev_dbg(u3d->dev, "vbus valid\n");
+
+ u3d->usb_state = USB_STATE_POWERED;
+ u3d->vbus_valid_detect = 0;
+ /* if external vbus detect is not supported,
+ * we handle it here.
+ */
+ if (!u3d->vbus) {
+ spin_unlock(&u3d->lock);
+ mv_u3d_vbus_session(&u3d->gadget, 1);
+ spin_lock(&u3d->lock);
+ }
+ } else
+ dev_err(u3d->dev, "vbus bit is not set\n");
+ }
+
+ /* RX data is already in the 16KB FIFO.*/
+ if (status & MV_U3D_USBINT_UNDER_RUN) {
+ trbunderrun = ioread32(&u3d->vuc_regs->trbunderrun);
+ dev_err(u3d->dev, "under run, ep%d\n", trbunderrun);
+ iowrite32(trbunderrun, &u3d->vuc_regs->trbunderrun);
+ mv_u3d_irq_process_error(u3d);
+ }
+
+ if (status & (MV_U3D_USBINT_RXDESC_ERR | MV_U3D_USBINT_TXDESC_ERR)) {
+ /* write one to clear */
+ iowrite32(status & (MV_U3D_USBINT_RXDESC_ERR
+ | MV_U3D_USBINT_TXDESC_ERR),
+ &u3d->vuc_regs->intrcause);
+ dev_err(u3d->dev, "desc err 0x%x\n", status);
+ mv_u3d_irq_process_error(u3d);
+ }
+
+ if (status & MV_U3D_USBINT_LINK_CHG)
+ mv_u3d_irq_process_link_change(u3d);
+
+ if (status & MV_U3D_USBINT_TX_COMPLETE)
+ mv_u3d_irq_process_tr_complete(u3d);
+
+ if (status & MV_U3D_USBINT_RX_COMPLETE)
+ mv_u3d_irq_process_tr_complete(u3d);
+
+ if (status & MV_U3D_USBINT_SETUP)
+ mv_u3d_irq_process_setup(u3d);
+
+ spin_unlock(&u3d->lock);
+ return IRQ_HANDLED;
+}
+
+static void mv_u3d_gadget_release(struct device *dev)
+{
+ dev_dbg(dev, "%s\n", __func__);
+}
+
+static __devexit int mv_u3d_remove(struct platform_device *dev)
+{
+ struct mv_u3d *u3d = platform_get_drvdata(dev);
+
+ BUG_ON(u3d == NULL);
+
+ usb_del_gadget_udc(&u3d->gadget);
+
+ /* free memory allocated in probe */
+ if (u3d->trb_pool)
+ dma_pool_destroy(u3d->trb_pool);
+
+ if (u3d->ep_context)
+ dma_free_coherent(&dev->dev, u3d->ep_context_size,
+ u3d->ep_context, u3d->ep_context_dma);
+
+ kfree(u3d->eps);
+
+ if (u3d->irq)
+ free_irq(u3d->irq, &dev->dev);
+
+ if (u3d->cap_regs)
+ iounmap(u3d->cap_regs);
+ u3d->cap_regs = NULL;
+
+ kfree(u3d->status_req);
+
+ clk_put(u3d->clk);
+
+ device_unregister(&u3d->gadget.dev);
+
+ platform_set_drvdata(dev, NULL);
+
+ kfree(u3d);
+
+ return 0;
+}
+
+static int mv_u3d_probe(struct platform_device *dev)
+{
+ struct mv_u3d *u3d = NULL;
+ struct mv_usb_platform_data *pdata = dev->dev.platform_data;
+ int retval = 0;
+ struct resource *r;
+ size_t size;
+
+ if (!dev->dev.platform_data) {
+ dev_err(&dev->dev, "missing platform_data\n");
+ retval = -ENODEV;
+ goto err_pdata;
+ }
+
+ u3d = kzalloc(sizeof(*u3d), GFP_KERNEL);
+ if (!u3d) {
+ dev_err(&dev->dev, "failed to allocate memory for u3d\n");
+ retval = -ENOMEM;
+ goto err_alloc_private;
+ }
+
+ spin_lock_init(&u3d->lock);
+
+ platform_set_drvdata(dev, u3d);
+
+ u3d->dev = &dev->dev;
+ u3d->vbus = pdata->vbus;
+
+ u3d->clk = clk_get(&dev->dev, pdata->clkname[0]);
+ if (IS_ERR(u3d->clk)) {
+ retval = PTR_ERR(u3d->clk);
+ goto err_get_clk;
+ }
+
+ r = platform_get_resource_byname(dev, IORESOURCE_MEM, "capregs");
+ if (!r) {
+ dev_err(&dev->dev, "no I/O memory resource defined\n");
+ retval = -ENODEV;
+ goto err_get_cap_regs;
+ }
+
+ u3d->cap_regs = (struct mv_u3d_cap_regs __iomem *)
+ ioremap(r->start, resource_size(r));
+ if (!u3d->cap_regs) {
+ dev_err(&dev->dev, "failed to map I/O memory\n");
+ retval = -EBUSY;
+ goto err_map_cap_regs;
+ } else {
+ dev_dbg(&dev->dev, "cap_regs address: 0x%x/0x%x\n",
+ (unsigned int)r->start, (unsigned int)u3d->cap_regs);
+ }
+
+ /* we will access controller register, so enable the u3d controller */
+ clk_enable(u3d->clk);
+
+ if (pdata->phy_init) {
+ retval = pdata->phy_init(u3d->phy_regs);
+ if (retval) {
+ dev_err(&dev->dev, "init phy error %d\n", retval);
+ goto err_u3d_enable;
+ }
+ }
+
+ u3d->op_regs = (struct mv_u3d_op_regs __iomem *)((u32)u3d->cap_regs
+ + MV_U3D_USB3_OP_REGS_OFFSET);
+
+ u3d->vuc_regs = (struct mv_u3d_vuc_regs __iomem *)((u32)u3d->cap_regs
+ + ioread32(&u3d->cap_regs->vuoff));
+
+ u3d->max_eps = 16;
+
+ /*
+ * some platform will use usb to download image, it may not disconnect
+ * usb gadget before loading kernel. So first stop u3d here.
+ */
+ mv_u3d_controller_stop(u3d);
+ iowrite32(0xFFFFFFFF, &u3d->vuc_regs->intrcause);
+
+ if (pdata->phy_deinit)
+ pdata->phy_deinit(u3d->phy_regs);
+ clk_disable(u3d->clk);
+
+ size = u3d->max_eps * sizeof(struct mv_u3d_ep_context) * 2;
+ size = (size + MV_U3D_EP_CONTEXT_ALIGNMENT - 1)
+ & ~(MV_U3D_EP_CONTEXT_ALIGNMENT - 1);
+ u3d->ep_context = dma_alloc_coherent(&dev->dev, size,
+ &u3d->ep_context_dma, GFP_KERNEL);
+ if (!u3d->ep_context) {
+ dev_err(&dev->dev, "allocate ep context memory failed\n");
+ retval = -ENOMEM;
+ goto err_alloc_ep_context;
+ }
+ u3d->ep_context_size = size;
+
+ /* create TRB dma_pool resource */
+ u3d->trb_pool = dma_pool_create("u3d_trb",
+ &dev->dev,
+ sizeof(struct mv_u3d_trb_hw),
+ MV_U3D_TRB_ALIGNMENT,
+ MV_U3D_DMA_BOUNDARY);
+
+ if (!u3d->trb_pool) {
+ retval = -ENOMEM;
+ goto err_alloc_trb_pool;
+ }
+
+ size = u3d->max_eps * sizeof(struct mv_u3d_ep) * 2;
+ u3d->eps = kzalloc(size, GFP_KERNEL);
+ if (!u3d->eps) {
+ dev_err(&dev->dev, "allocate ep memory failed\n");
+ retval = -ENOMEM;
+ goto err_alloc_eps;
+ }
+
+ /* initialize ep0 status request structure */
+ u3d->status_req = kzalloc(sizeof(struct mv_u3d_req) + 8, GFP_KERNEL);
+ if (!u3d->status_req) {
+ dev_err(&dev->dev, "allocate status_req memory failed\n");
+ retval = -ENOMEM;
+ goto err_alloc_status_req;
+ }
+ INIT_LIST_HEAD(&u3d->status_req->queue);
+
+ /* allocate a small amount of memory to get valid address */
+ u3d->status_req->req.buf = (char *)u3d->status_req
+ + sizeof(struct mv_u3d_req);
+ u3d->status_req->req.dma = virt_to_phys(u3d->status_req->req.buf);
+
+ u3d->resume_state = USB_STATE_NOTATTACHED;
+ u3d->usb_state = USB_STATE_ATTACHED;
+ u3d->ep0_dir = MV_U3D_EP_DIR_OUT;
+ u3d->remote_wakeup = 0;
+
+ r = platform_get_resource(dev, IORESOURCE_IRQ, 0);
+ if (!r) {
+ dev_err(&dev->dev, "no IRQ resource defined\n");
+ retval = -ENODEV;
+ goto err_get_irq;
+ }
+ u3d->irq = r->start;
+ if (request_irq(u3d->irq, mv_u3d_irq,
+ IRQF_DISABLED | IRQF_SHARED, driver_name, u3d)) {
+ u3d->irq = 0;
+ dev_err(&dev->dev, "Request irq %d for u3d failed\n",
+ u3d->irq);
+ retval = -ENODEV;
+ goto err_request_irq;
+ }
+
+ /* initialize gadget structure */
+ u3d->gadget.ops = &mv_u3d_ops; /* usb_gadget_ops */
+ u3d->gadget.ep0 = &u3d->eps[1].ep; /* gadget ep0 */
+ INIT_LIST_HEAD(&u3d->gadget.ep_list); /* ep_list */
+ u3d->gadget.speed = USB_SPEED_UNKNOWN; /* speed */
+
+ /* the "gadget" abstracts/virtualizes the controller */
+ dev_set_name(&u3d->gadget.dev, "gadget");
+ u3d->gadget.dev.parent = &dev->dev;
+ u3d->gadget.dev.dma_mask = dev->dev.dma_mask;
+ u3d->gadget.dev.release = mv_u3d_gadget_release;
+ u3d->gadget.name = driver_name; /* gadget name */
+
+ retval = device_register(&u3d->gadget.dev);
+ if (retval)
+ goto err_register_gadget_device;
+
+ mv_u3d_eps_init(u3d);
+
+ /* external vbus detection */
+ if (u3d->vbus) {
+ u3d->clock_gating = 1;
+ dev_err(&dev->dev, "external vbus detection\n");
+ }
+
+ if (!u3d->clock_gating)
+ u3d->vbus_active = 1;
+
+ /* enable usb3 controller vbus detection */
+ u3d->vbus_valid_detect = 1;
+
+ retval = usb_add_gadget_udc(&dev->dev, &u3d->gadget);
+ if (retval)
+ goto err_unregister;
+
+ dev_dbg(&dev->dev, "successful probe usb3 device %s clock gating.\n",
+ u3d->clock_gating ? "with" : "without");
+
+ return 0;
+
+err_unregister:
+ device_unregister(&u3d->gadget.dev);
+err_register_gadget_device:
+ free_irq(u3d->irq, &dev->dev);
+err_request_irq:
+err_get_irq:
+ kfree(u3d->status_req);
+err_alloc_status_req:
+ kfree(u3d->eps);
+err_alloc_eps:
+ dma_pool_destroy(u3d->trb_pool);
+err_alloc_trb_pool:
+ dma_free_coherent(&dev->dev, u3d->ep_context_size,
+ u3d->ep_context, u3d->ep_context_dma);
+err_alloc_ep_context:
+ if (pdata->phy_deinit)
+ pdata->phy_deinit(u3d->phy_regs);
+ clk_disable(u3d->clk);
+err_u3d_enable:
+ iounmap(u3d->cap_regs);
+err_map_cap_regs:
+err_get_cap_regs:
+err_get_clk:
+ clk_put(u3d->clk);
+ platform_set_drvdata(dev, NULL);
+ kfree(u3d);
+err_alloc_private:
+err_pdata:
+ return retval;
+}
+
+#ifdef CONFIG_PM
+static int mv_u3d_suspend(struct device *dev)
+{
+ struct mv_u3d *u3d = dev_get_drvdata(dev);
+
+ /*
+ * only cable is unplugged, usb can suspend.
+ * So do not care about clock_gating == 1, it is handled by
+ * vbus session.
+ */
+ if (!u3d->clock_gating) {
+ mv_u3d_controller_stop(u3d);
+
+ spin_lock_irq(&u3d->lock);
+ /* stop all usb activities */
+ mv_u3d_stop_activity(u3d, u3d->driver);
+ spin_unlock_irq(&u3d->lock);
+
+ mv_u3d_disable(u3d);
+ }
+
+ return 0;
+}
+
+static int mv_u3d_resume(struct device *dev)
+{
+ struct mv_u3d *u3d = dev_get_drvdata(dev);
+ int retval;
+
+ if (!u3d->clock_gating) {
+ retval = mv_u3d_enable(u3d);
+ if (retval)
+ return retval;
+
+ if (u3d->driver && u3d->softconnect) {
+ mv_u3d_controller_reset(u3d);
+ mv_u3d_ep0_reset(u3d);
+ mv_u3d_controller_start(u3d);
+ }
+ }
+
+ return 0;
+}
+
+SIMPLE_DEV_PM_OPS(mv_u3d_pm_ops, mv_u3d_suspend, mv_u3d_resume);
+#endif
+
+static void mv_u3d_shutdown(struct platform_device *dev)
+{
+ struct mv_u3d *u3d = dev_get_drvdata(&dev->dev);
+ u32 tmp;
+
+ tmp = ioread32(&u3d->op_regs->usbcmd);
+ tmp &= ~MV_U3D_CMD_RUN_STOP;
+ iowrite32(tmp, &u3d->op_regs->usbcmd);
+}
+
+static struct platform_driver mv_u3d_driver = {
+ .probe = mv_u3d_probe,
+ .remove = __exit_p(mv_u3d_remove),
+ .shutdown = mv_u3d_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "mv-u3d",
+#ifdef CONFIG_PM
+ .pm = &mv_u3d_pm_ops,
+#endif
+ },
+};
+
+module_platform_driver(mv_u3d_driver);
+MODULE_ALIAS("platform:mv-u3d");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Yu Xu <yuxu@marvell.com>");
+MODULE_LICENSE("GPL");
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/list.h>
return retval;
}
- if (udc->transceiver) {
+ if (!IS_ERR_OR_NULL(udc->transceiver)) {
retval = otg_set_peripheral(udc->transceiver->otg,
&udc->gadget);
if (retval) {
* then vbus irq will not be requested in udc driver.
*/
if (udc->pdata && udc->pdata->vbus
- && udc->clock_gating && udc->transceiver == NULL)
+ && udc->clock_gating && IS_ERR_OR_NULL(udc->transceiver))
free_irq(udc->pdata->vbus->irq, &dev->dev);
/* free memory allocated in probe */
#ifdef CONFIG_USB_OTG_UTILS
if (pdata->mode == MV_USB_MODE_OTG)
- udc->transceiver = usb_get_transceiver();
+ udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
#endif
udc->clknum = pdata->clknum;
eps_init(udc);
/* VBUS detect: we can disable/enable clock on demand.*/
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
udc->clock_gating = 1;
else if (pdata->vbus) {
udc->clock_gating = 1;
err_unregister:
if (udc->pdata && udc->pdata->vbus
- && udc->clock_gating && udc->transceiver == NULL)
+ && udc->clock_gating && IS_ERR_OR_NULL(udc->transceiver))
free_irq(pdata->vbus->irq, &dev->dev);
device_unregister(&udc->gadget.dev);
err_free_irq:
struct mv_udc *udc = the_controller;
/* if OTG is enabled, the following will be done in OTG driver*/
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return 0;
if (udc->pdata->vbus && udc->pdata->vbus->poll)
int retval;
/* if OTG is enabled, the following will be done in OTG driver*/
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return 0;
if (!udc->clock_gating) {
#include <linux/usb/otg.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/prefetch.h>
+#include <linux/io.h>
#include <asm/byteorder.h>
-#include <asm/io.h>
#include <asm/irq.h>
#include <asm/unaligned.h>
#include <asm/mach-types.h>
#define DRIVER_DESC "OMAP UDC driver"
#define DRIVER_VERSION "4 October 2004"
-#define DMA_ADDR_INVALID (~(dma_addr_t)0)
-
-#define OMAP2_DMA_CH(ch) (((ch) - 1) << 1)
-#define OMAP24XX_DMA(name, ch) (OMAP24XX_DMA_##name + OMAP2_DMA_CH(ch))
-
/*
* The OMAP UDC needs _very_ early endpoint setup: before enabling the
* D+ pullup to allow enumeration. That's too early for the gadget
#ifdef USE_ISO
static unsigned fifo_mode = 3;
#else
-static unsigned fifo_mode = 0;
+static unsigned fifo_mode;
#endif
/* "modprobe omap_udc fifo_mode=42", or else as a kernel
* boot parameter "omap_udc:fifo_mode=42"
*/
-module_param (fifo_mode, uint, 0);
-MODULE_PARM_DESC (fifo_mode, "endpoint configuration");
+module_param(fifo_mode, uint, 0);
+MODULE_PARM_DESC(fifo_mode, "endpoint configuration");
#ifdef USE_DMA
static bool use_dma = 1;
/* "modprobe omap_udc use_dma=y", or else as a kernel
* boot parameter "omap_udc:use_dma=y"
*/
-module_param (use_dma, bool, 0);
-MODULE_PARM_DESC (use_dma, "enable/disable DMA");
+module_param(use_dma, bool, 0);
+MODULE_PARM_DESC(use_dma, "enable/disable DMA");
#else /* !USE_DMA */
/* save a bit of code */
#endif /* !USE_DMA */
-static const char driver_name [] = "omap_udc";
-static const char driver_desc [] = DRIVER_DESC;
+static const char driver_name[] = "omap_udc";
+static const char driver_desc[] = DRIVER_DESC;
/*-------------------------------------------------------------------------*/
spin_lock_irqsave(&ep->udc->lock, flags);
ep->ep.desc = NULL;
- nuke (ep, -ESHUTDOWN);
+ nuke(ep, -ESHUTDOWN);
ep->ep.maxpacket = ep->maxpacket;
ep->has_dma = 0;
omap_writew(UDC_SET_HALT, UDC_CTRL);
struct omap_req *req;
req = kzalloc(sizeof(*req), gfp_flags);
- if (req) {
- req->req.dma = DMA_ADDR_INVALID;
- INIT_LIST_HEAD (&req->queue);
- }
+ if (!req)
+ return NULL;
+
+ INIT_LIST_HEAD(&req->queue);
+
return &req->req;
}
{
struct omap_req *req = container_of(_req, struct omap_req, req);
- if (_req)
- kfree (req);
+ kfree(req);
}
/*-------------------------------------------------------------------------*/
static void
done(struct omap_ep *ep, struct omap_req *req, int status)
{
+ struct omap_udc *udc = ep->udc;
unsigned stopped = ep->stopped;
list_del_init(&req->queue);
else
status = req->req.status;
- if (use_dma && ep->has_dma) {
- if (req->mapped) {
- dma_unmap_single(ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- (ep->bEndpointAddress & USB_DIR_IN)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- req->req.dma = DMA_ADDR_INVALID;
- req->mapped = 0;
- } else
- dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- (ep->bEndpointAddress & USB_DIR_IN)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- }
+ if (use_dma && ep->has_dma)
+ usb_gadget_unmap_request(&udc->gadget, &req->req,
+ (ep->bEndpointAddress & USB_DIR_IN));
#ifndef USB_TRACE
if (status && status != -ESHUTDOWN)
return len;
}
-// FIXME change r/w fifo calling convention
+/* FIXME change r/w fifo calling convention */
-// return: 0 = still running, 1 = completed, negative = errno
+/* return: 0 = still running, 1 = completed, negative = errno */
static int write_fifo(struct omap_ep *ep, struct omap_req *req)
{
u8 *buf;
return len;
}
-// return: 0 = still running, 1 = queue empty, negative = errno
+/* return: 0 = still running, 1 = queue empty, negative = errno */
static int read_fifo(struct omap_ep *ep, struct omap_req *req)
{
u8 *buf;
: OMAP_DMA_SYNC_ELEMENT;
int dma_trigger = 0;
- if (cpu_is_omap24xx())
- dma_trigger = OMAP24XX_DMA(USB_W2FC_TX0, ep->dma_channel);
-
/* measure length in either bytes or packets */
if ((cpu_is_omap16xx() && length <= UDC_TXN_TSC)
- || (cpu_is_omap24xx() && length < ep->maxpacket)
|| (cpu_is_omap15xx() && length < ep->maxpacket)) {
txdma_ctrl = UDC_TXN_EOT | length;
omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8,
int dma_trigger = 0;
u16 w;
- if (cpu_is_omap24xx())
- dma_trigger = OMAP24XX_DMA(USB_W2FC_RX0, ep->dma_channel);
-
- /* NOTE: we filtered out "short reads" before, so we know
- * the buffer has only whole numbers of packets.
- * except MODE SELECT(6) sent the 24 bytes data in OMAP24XX DMA mode
- */
- if (cpu_is_omap24xx() && packets < ep->maxpacket) {
- omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8,
- packets, 1, OMAP_DMA_SYNC_ELEMENT,
- dma_trigger, 0);
- req->dma_bytes = packets;
- } else {
- /* set up this DMA transfer, enable the fifo, start */
- packets /= ep->ep.maxpacket;
- packets = min(packets, (unsigned)UDC_RXN_TC + 1);
- req->dma_bytes = packets * ep->ep.maxpacket;
- omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
- ep->ep.maxpacket >> 1, packets,
- OMAP_DMA_SYNC_ELEMENT,
- dma_trigger, 0);
- }
+ /* set up this DMA transfer, enable the fifo, start */
+ packets /= ep->ep.maxpacket;
+ packets = min(packets, (unsigned)UDC_RXN_TC + 1);
+ req->dma_bytes = packets * ep->ep.maxpacket;
+ omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
+ ep->ep.maxpacket >> 1, packets,
+ OMAP_DMA_SYNC_ELEMENT,
+ dma_trigger, 0);
omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF,
OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual,
0, 0);
}
omap_writew(UDC_TXN_DONE, UDC_IRQ_SRC);
- if (!list_empty (&ep->queue)) {
+ if (!list_empty(&ep->queue)) {
req = container_of(ep->queue.next,
struct omap_req, queue);
next_in_dma(ep, req);
}
omap_writew(UDC_RXN_EOT, UDC_IRQ_SRC);
- if (!list_empty (&ep->queue)) {
+ if (!list_empty(&ep->queue)) {
req = container_of(ep->queue.next,
struct omap_req, queue);
next_out_dma(ep, req);
ep->dma_channel = channel;
if (is_in) {
- if (cpu_is_omap24xx())
- dma_channel = OMAP24XX_DMA(USB_W2FC_TX0, channel);
- else
- dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel;
+ dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel;
status = omap_request_dma(dma_channel,
ep->ep.name, dma_error, ep, &ep->lch);
if (status == 0) {
0, 0);
}
} else {
- if (cpu_is_omap24xx())
- dma_channel = OMAP24XX_DMA(USB_W2FC_RX0, channel);
- else
- dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel;
-
+ dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel;
status = omap_request_dma(dma_channel,
ep->ep.name, dma_error, ep, &ep->lch);
if (status == 0) {
omap_disable_dma_irq(ep->lch, OMAP_DMA_BLOCK_IRQ);
/* channel type P: hw synch (fifo) */
- if (cpu_class_is_omap1() && !cpu_is_omap15xx())
+ if (!cpu_is_omap15xx())
omap_set_dma_channel_mode(ep->lch, OMAP_DMA_LCH_P);
}
/* this isn't bogus, but OMAP DMA isn't the only hardware to
* have a hard time with partial packet reads... reject it.
- * Except OMAP2 can handle the small packets.
*/
if (use_dma
&& ep->has_dma
&& ep->bEndpointAddress != 0
&& (ep->bEndpointAddress & USB_DIR_IN) == 0
- && !cpu_class_is_omap2()
&& (req->req.length % ep->ep.maxpacket) != 0) {
DBG("%s, no partial packet OUT reads\n", __func__);
return -EMSGSIZE;
if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
return -ESHUTDOWN;
- if (use_dma && ep->has_dma) {
- if (req->req.dma == DMA_ADDR_INVALID) {
- req->req.dma = dma_map_single(
- ep->udc->gadget.dev.parent,
- req->req.buf,
- req->req.length,
- (ep->bEndpointAddress & USB_DIR_IN)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- req->mapped = 1;
- } else {
- dma_sync_single_for_device(
- ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- (ep->bEndpointAddress & USB_DIR_IN)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- req->mapped = 0;
- }
- }
+ if (use_dma && ep->has_dma)
+ usb_gadget_map_request(&udc->gadget, &req->req,
+ (ep->bEndpointAddress & USB_DIR_IN));
VDBG("%s queue req %p, len %d buf %p\n",
ep->ep.name, _req, _req->length, _req->buf);
int is_in;
if (ep->bEndpointAddress == 0) {
- if (!udc->ep0_pending || !list_empty (&ep->queue)) {
+ if (!udc->ep0_pending || !list_empty(&ep->queue)) {
spin_unlock_irqrestore(&udc->lock, flags);
return -EL2HLT;
}
* always an IN ... even for IN transfers,
* a weird case which seem to stall OMAP.
*/
- omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM);
+ omap_writew(UDC_EP_SEL | UDC_EP_DIR,
+ UDC_EP_NUM);
omap_writew(UDC_CLR_EP, UDC_CTRL);
omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
omap_writew(UDC_EP_DIR, UDC_EP_NUM);
/* non-empty DATA stage */
} else if (is_in) {
- omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM);
+ omap_writew(UDC_EP_SEL | UDC_EP_DIR,
+ UDC_EP_NUM);
} else {
if (udc->ep0_setup)
goto irq_wait;
spin_lock_irqsave(&ep->udc->lock, flags);
/* make sure it's actually queued on this endpoint */
- list_for_each_entry (req, &ep->queue, queue) {
+ list_for_each_entry(req, &ep->queue, queue) {
if (&req->req == _req)
break;
}
.dequeue = omap_ep_dequeue,
.set_halt = omap_ep_set_halt,
- // fifo_status ... report bytes in fifo
- // fifo_flush ... flush fifo
+ /* fifo_status ... report bytes in fifo */
+ /* fifo_flush ... flush fifo */
};
/*-------------------------------------------------------------------------*/
/* NOTE: non-OTG systems may use SRP TOO... */
} else if (!(udc->devstat & UDC_ATT)) {
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
retval = otg_start_srp(udc->transceiver->otg);
}
spin_unlock_irqrestore(&udc->lock, flags);
struct omap_udc *udc;
udc = container_of(gadget, struct omap_udc, gadget);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return usb_phy_set_power(udc->transceiver, mA);
return -EOPNOTSUPP;
}
udc->gadget.speed = USB_SPEED_UNKNOWN;
nuke(&udc->ep[0], -ESHUTDOWN);
- list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list)
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list)
nuke(ep, -ESHUTDOWN);
}
/* read next OUT packet of request, maybe
* reactiviting the fifo; stall on errors.
*/
- if (!req || (stat = read_fifo(ep0, req)) < 0) {
+ stat = read_fifo(ep0, req);
+ if (!req || stat < 0) {
omap_writew(UDC_STALL_CMD, UDC_SYSCON2);
udc->ep0_pending = 0;
stat = 0;
/* this has rude side-effects (aborts) and
* can't really work if DMA-IN is active
*/
- DBG("%s host set_halt, NYET \n", ep->name);
+ DBG("%s host set_halt, NYET\n", ep->name);
goto do_stall;
}
use_ep(ep, 0);
*/
udc->ep0_setup = 1;
spin_unlock(&udc->lock);
- status = udc->driver->setup (&udc->gadget, &u.r);
+ status = udc->driver->setup(&udc->gadget, &u.r);
spin_lock(&udc->lock);
udc->ep0_setup = 0;
}
if (devstat & UDC_ATT) {
udc->gadget.speed = USB_SPEED_FULL;
VDBG("connect\n");
- if (!udc->transceiver)
+ if (IS_ERR_OR_NULL(udc->transceiver))
pullup_enable(udc);
- // if (driver->connect) call it
+ /* if (driver->connect) call it */
} else if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
udc->gadget.speed = USB_SPEED_UNKNOWN;
- if (!udc->transceiver)
+ if (IS_ERR_OR_NULL(udc->transceiver))
pullup_disable(udc);
DBG("disconnect, gadget %s\n",
udc->driver->driver.name);
}
if (change & UDC_SUS) {
if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
- // FIXME tell isp1301 to suspend/resume (?)
+ /* FIXME tell isp1301 to suspend/resume (?) */
if (devstat & UDC_SUS) {
VDBG("suspend\n");
update_otg(udc);
udc->driver->suspend(&udc->gadget);
spin_lock(&udc->lock);
}
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
usb_phy_set_suspend(
udc->transceiver, 1);
} else {
VDBG("resume\n");
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
usb_phy_set_suspend(
udc->transceiver, 0);
if (udc->gadget.speed == USB_SPEED_FULL
spin_lock_irqsave(&udc->lock, flags);
/* handle all non-DMA ISO transfers */
- list_for_each_entry (ep, &udc->iso, iso) {
+ list_for_each_entry(ep, &udc->iso, iso) {
u16 stat;
struct omap_req *req;
static inline int machine_without_vbus_sense(void)
{
- return (machine_is_omap_innovator()
+ return machine_is_omap_innovator()
|| machine_is_omap_osk()
- || machine_is_omap_apollon()
-#ifndef CONFIG_MACH_OMAP_H4_OTG
- || machine_is_omap_h4()
-#endif
|| machine_is_sx1()
- || cpu_is_omap7xx() /* No known omap7xx boards with vbus sense */
- );
+ /* No known omap7xx boards with vbus sense */
+ || cpu_is_omap7xx();
}
static int omap_udc_start(struct usb_gadget_driver *driver,
if (!udc)
return -ENODEV;
if (!driver
- // FIXME if otg, check: driver->is_otg
+ /* FIXME if otg, check: driver->is_otg */
|| driver->max_speed < USB_SPEED_FULL
|| !bind || !driver->setup)
return -EINVAL;
}
/* reset state */
- list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) {
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
ep->irqs = 0;
if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC)
continue;
omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC);
/* connect to bus through transceiver */
- if (udc->transceiver) {
+ if (!IS_ERR_OR_NULL(udc->transceiver)) {
status = otg_set_peripheral(udc->transceiver->otg,
&udc->gadget);
if (status < 0) {
ERR("can't bind to transceiver\n");
if (driver->unbind) {
- driver->unbind (&udc->gadget);
+ driver->unbind(&udc->gadget);
udc->gadget.dev.driver = NULL;
udc->driver = NULL;
}
}
} else {
if (can_pullup(udc))
- pullup_enable (udc);
+ pullup_enable(udc);
else
- pullup_disable (udc);
+ pullup_disable(udc);
}
/* boards that don't have VBUS sensing can't autogate 48MHz;
if (machine_without_vbus_sense())
omap_vbus_session(&udc->gadget, 0);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
(void) otg_set_peripheral(udc->transceiver->otg, NULL);
else
pullup_disable(udc);
static const char proc_filename[] = "driver/udc";
#define FOURBITS "%s%s%s%s"
-#define EIGHTBITS FOURBITS FOURBITS
+#define EIGHTBITS "%s%s%s%s%s%s%s%s"
static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
{
"\n%s %s%s%sirqs %ld stat %04x " EIGHTBITS FOURBITS "%s\n",
ep->name, buf,
ep->double_buf ? "dbuf " : "",
- ({char *s; switch(ep->ackwait){
- case 0: s = ""; break;
- case 1: s = "(ackw) "; break;
- case 2: s = "(ackw2) "; break;
- default: s = "(?) "; break;
- } s;}),
+ ({ char *s;
+ switch (ep->ackwait) {
+ case 0:
+ s = "";
+ break;
+ case 1:
+ s = "(ackw) ";
+ break;
+ case 2:
+ s = "(ackw2) ";
+ break;
+ default:
+ s = "(?) ";
+ break;
+ } s; }),
ep->irqs, stat_flg,
(stat_flg & UDC_NO_RXPACKET) ? "no_rxpacket " : "",
(stat_flg & UDC_MISS_IN) ? "miss_in " : "",
(stat_flg & UDC_NON_ISO_FIFO_EMPTY) ? "fifo_empty " : "",
(stat_flg & UDC_NON_ISO_FIFO_FULL) ? "fifo_full " : "");
- if (list_empty (&ep->queue))
+ if (list_empty(&ep->queue))
seq_printf(s, "\t(queue empty)\n");
else
- list_for_each_entry (req, &ep->queue, queue) {
+ list_for_each_entry(req, &ep->queue, queue) {
unsigned length = req->req.actual;
if (use_dma && buf[0]) {
static char *trx_mode(unsigned m, int enabled)
{
switch (m) {
- case 0: return enabled ? "*6wire" : "unused";
- case 1: return "4wire";
- case 2: return "3wire";
- case 3: return "6wire";
- default: return "unknown";
+ case 0:
+ return enabled ? "*6wire" : "unused";
+ case 1:
+ return "4wire";
+ case 2:
+ return "3wire";
+ case 3:
+ return "6wire";
+ default:
+ return "unknown";
}
}
u32 trans = 0;
char *ctrl_name = "(UNKNOWN)";
- /* XXX This needs major revision for OMAP2+ */
tmp = omap_readl(OTG_REV);
- if (cpu_class_is_omap1()) {
- ctrl_name = "tranceiver_ctrl";
- trans = omap_readw(USB_TRANSCEIVER_CTRL);
- }
+ ctrl_name = "tranceiver_ctrl";
+ trans = omap_readw(USB_TRANSCEIVER_CTRL);
seq_printf(s, "\nOTG rev %d.%d, %s %05x\n",
tmp >> 4, tmp & 0xf, ctrl_name, trans);
tmp = omap_readw(OTG_SYSCON_1);
" b_ase_brst=%d hmc=%d\n", tmp,
(tmp & OTG_EN) ? " otg_en" : "",
(tmp & USBX_SYNCHRO) ? " synchro" : "",
- // much more SRP stuff
+ /* much more SRP stuff */
(tmp & SRP_DATA) ? " srp_data" : "",
(tmp & SRP_VBUS) ? " srp_vbus" : "",
(tmp & OTG_PADEN) ? " otg_paden" : "",
HMC,
udc->transceiver
? udc->transceiver->label
- : ((cpu_is_omap1710() || cpu_is_omap24xx())
+ : (cpu_is_omap1710()
? "external" : "(none)"));
- if (cpu_class_is_omap1()) {
- seq_printf(s, "ULPD control %04x req %04x status %04x\n",
- omap_readw(ULPD_CLOCK_CTRL),
- omap_readw(ULPD_SOFT_REQ),
- omap_readw(ULPD_STATUS_REQ));
- }
+ seq_printf(s, "ULPD control %04x req %04x status %04x\n",
+ omap_readw(ULPD_CLOCK_CTRL),
+ omap_readw(ULPD_SOFT_REQ),
+ omap_readw(ULPD_STATUS_REQ));
/* OTG controller registers */
if (!cpu_is_omap15xx())
(tmp & UDC_SELF_PWR) ? " self_pwr" : "",
(tmp & UDC_SOFF_DIS) ? " soff_dis" : "",
(tmp & UDC_PULLUP_EN) ? " PULLUP" : "");
- // syscon2 is write-only
+ /* syscon2 is write-only */
/* UDC controller registers */
if (!(tmp & UDC_PULLUP_EN)) {
if (tmp & UDC_ATT) {
proc_ep_show(s, &udc->ep[0]);
if (tmp & UDC_ADD) {
- list_for_each_entry (ep, &udc->gadget.ep_list,
+ list_for_each_entry(ep, &udc->gadget.ep_list,
ep.ep_list) {
if (ep->ep.desc)
proc_ep_show(s, ep);
* UDC_SYSCON_1.CFG_LOCK is set can now work. We won't use that
* capability yet though.
*/
-static unsigned __init
+static unsigned __devinit
omap_ep_setup(char *name, u8 addr, u8 type,
unsigned buf, unsigned maxp, int dbuf)
{
/* chip setup ... bit values are same for IN, OUT */
if (type == USB_ENDPOINT_XFER_ISOC) {
switch (maxp) {
- case 8: epn_rxtx = 0 << 12; break;
- case 16: epn_rxtx = 1 << 12; break;
- case 32: epn_rxtx = 2 << 12; break;
- case 64: epn_rxtx = 3 << 12; break;
- case 128: epn_rxtx = 4 << 12; break;
- case 256: epn_rxtx = 5 << 12; break;
- case 512: epn_rxtx = 6 << 12; break;
- default: BUG();
+ case 8:
+ epn_rxtx = 0 << 12;
+ break;
+ case 16:
+ epn_rxtx = 1 << 12;
+ break;
+ case 32:
+ epn_rxtx = 2 << 12;
+ break;
+ case 64:
+ epn_rxtx = 3 << 12;
+ break;
+ case 128:
+ epn_rxtx = 4 << 12;
+ break;
+ case 256:
+ epn_rxtx = 5 << 12;
+ break;
+ case 512:
+ epn_rxtx = 6 << 12;
+ break;
+ default:
+ BUG();
}
epn_rxtx |= UDC_EPN_RX_ISO;
dbuf = 1;
* and ignored for PIO-IN on newer chips
* (for more reliable behavior)
*/
- if (!use_dma || cpu_is_omap15xx() || cpu_is_omap24xx())
+ if (!use_dma || cpu_is_omap15xx())
dbuf = 0;
switch (maxp) {
- case 8: epn_rxtx = 0 << 12; break;
- case 16: epn_rxtx = 1 << 12; break;
- case 32: epn_rxtx = 2 << 12; break;
- case 64: epn_rxtx = 3 << 12; break;
- default: BUG();
+ case 8:
+ epn_rxtx = 0 << 12;
+ break;
+ case 16:
+ epn_rxtx = 1 << 12;
+ break;
+ case 32:
+ epn_rxtx = 2 << 12;
+ break;
+ case 64:
+ epn_rxtx = 3 << 12;
+ break;
+ default:
+ BUG();
}
if (dbuf && addr)
epn_rxtx |= UDC_EPN_RX_DB;
ep->ep.name = ep->name;
ep->ep.ops = &omap_ep_ops;
ep->ep.maxpacket = ep->maxpacket = maxp;
- list_add_tail (&ep->ep.ep_list, &udc->gadget.ep_list);
+ list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
return buf;
}
static void omap_udc_release(struct device *dev)
{
complete(udc->done);
- kfree (udc);
+ kfree(udc);
udc = NULL;
}
-static int __init
+static int __devinit
omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
{
unsigned tmp, buf;
omap_writew(0, UDC_TXDMA_CFG);
/* UDC_PULLUP_EN gates the chip clock */
- // OTG_SYSCON_1 |= DEV_IDLE_EN;
+ /* OTG_SYSCON_1 |= DEV_IDLE_EN; */
udc = kzalloc(sizeof(*udc), GFP_KERNEL);
if (!udc)
return -ENOMEM;
- spin_lock_init (&udc->lock);
+ spin_lock_init(&udc->lock);
udc->gadget.ops = &omap_gadget_ops;
udc->gadget.ep0 = &udc->ep[0].ep;
omap_writew(0, UDC_EP_TX(tmp));
}
-#define OMAP_BULK_EP(name,addr) \
+#define OMAP_BULK_EP(name, addr) \
buf = omap_ep_setup(name "-bulk", addr, \
USB_ENDPOINT_XFER_BULK, buf, 64, 1);
-#define OMAP_INT_EP(name,addr, maxp) \
+#define OMAP_INT_EP(name, addr, maxp) \
buf = omap_ep_setup(name "-int", addr, \
USB_ENDPOINT_XFER_INT, buf, maxp, 0);
-#define OMAP_ISO_EP(name,addr, maxp) \
+#define OMAP_ISO_EP(name, addr, maxp) \
buf = omap_ep_setup(name "-iso", addr, \
USB_ENDPOINT_XFER_ISOC, buf, maxp, 1);
return 0;
}
-static int __init omap_udc_probe(struct platform_device *pdev)
+static int __devinit omap_udc_probe(struct platform_device *pdev)
{
int status = -ENODEV;
int hmc;
struct usb_phy *xceiv = NULL;
const char *type = NULL;
struct omap_usb_config *config = pdev->dev.platform_data;
- struct clk *dc_clk;
- struct clk *hhc_clk;
+ struct clk *dc_clk = NULL;
+ struct clk *hhc_clk = NULL;
+
+ if (cpu_is_omap7xx())
+ use_dma = 0;
/* NOTE: "knows" the order of the resources! */
if (!request_mem_region(pdev->resource[0].start,
udelay(100);
}
- if (cpu_is_omap24xx()) {
- dc_clk = clk_get(&pdev->dev, "usb_fck");
- hhc_clk = clk_get(&pdev->dev, "usb_l4_ick");
- BUG_ON(IS_ERR(dc_clk) || IS_ERR(hhc_clk));
- /* can't use omap_udc_enable_clock yet */
- clk_enable(dc_clk);
- clk_enable(hhc_clk);
- udelay(100);
- }
-
if (cpu_is_omap7xx()) {
dc_clk = clk_get(&pdev->dev, "usb_dc_ck");
hhc_clk = clk_get(&pdev->dev, "l3_ocpi_ck");
* use it. Except for OTG, we don't _need_ to talk to one;
* but not having one probably means no VBUS detection.
*/
- xceiv = usb_get_transceiver();
- if (xceiv)
+ xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (!IS_ERR_OR_NULL(xceiv))
type = xceiv->label;
else if (config->otg) {
DBG("OTG requires external transceiver!\n");
hmc = HMC_1610;
- if (cpu_is_omap24xx()) {
- /* this could be transceiverless in one of the
- * "we don't need to know" modes.
- */
- type = "external";
- goto known;
- }
-
switch (hmc) {
case 0: /* POWERUP DEFAULT == 0 */
case 4:
case 16:
case 19:
case 25:
- if (!xceiv) {
+ if (IS_ERR_OR_NULL(xceiv)) {
DBG("external transceiver not registered!\n");
type = "unknown";
}
goto cleanup0;
}
}
-known:
+
INFO("hmc mode %d, %s transceiver\n", hmc, type);
/* a "gadget" abstracts/virtualizes the controller */
status = omap_udc_setup(pdev, xceiv);
- if (status) {
+ if (status)
goto cleanup0;
- }
+
xceiv = NULL;
- // "udc" is now valid
+ /* "udc" is now valid */
pullup_disable(udc);
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
udc->gadget.is_otg = (config->otg != 0);
/* USB general purpose IRQ: ep0, state changes, dma, etc */
status = request_irq(pdev->resource[1].start, omap_udc_irq,
- IRQF_SAMPLE_RANDOM, driver_name, udc);
+ 0, driver_name, udc);
if (status != 0) {
ERR("can't get irq %d, err %d\n",
(int) pdev->resource[1].start, status);
/* USB "non-iso" IRQ (PIO for all but ep0) */
status = request_irq(pdev->resource[2].start, omap_udc_pio_irq,
- IRQF_SAMPLE_RANDOM, "omap_udc pio", udc);
+ 0, "omap_udc pio", udc);
if (status != 0) {
ERR("can't get irq %d, err %d\n",
(int) pdev->resource[2].start, status);
clk_disable(dc_clk);
}
- if (cpu_is_omap24xx()) {
- udc->dc_clk = dc_clk;
- udc->hhc_clk = hhc_clk;
- /* FIXME OMAP2 don't release hhc & dc clock */
-#if 0
- clk_disable(hhc_clk);
- clk_disable(dc_clk);
-#endif
- }
-
create_proc_file();
status = device_add(&udc->gadget.dev);
if (status)
free_irq(pdev->resource[1].start, udc);
cleanup1:
- kfree (udc);
+ kfree(udc);
udc = NULL;
cleanup0:
- if (xceiv)
- usb_put_transceiver(xceiv);
+ if (!IS_ERR_OR_NULL(xceiv))
+ usb_put_phy(xceiv);
- if (cpu_is_omap16xx() || cpu_is_omap24xx() || cpu_is_omap7xx()) {
+ if (cpu_is_omap16xx() || cpu_is_omap7xx()) {
clk_disable(hhc_clk);
clk_disable(dc_clk);
clk_put(hhc_clk);
return status;
}
-static int __exit omap_udc_remove(struct platform_device *pdev)
+static int __devexit omap_udc_remove(struct platform_device *pdev)
{
DECLARE_COMPLETION_ONSTACK(done);
udc->done = &done;
pullup_disable(udc);
- if (udc->transceiver) {
- usb_put_transceiver(udc->transceiver);
+ if (!IS_ERR_OR_NULL(udc->transceiver)) {
+ usb_put_phy(udc->transceiver);
udc->transceiver = NULL;
}
omap_writew(0, UDC_SYSCON1);
/*-------------------------------------------------------------------------*/
static struct platform_driver udc_driver = {
- .remove = __exit_p(omap_udc_remove),
+ .probe = omap_udc_probe,
+ .remove = __devexit_p(omap_udc_remove),
.suspend = omap_udc_suspend,
.resume = omap_udc_resume,
.driver = {
},
};
-static int __init udc_init(void)
-{
- /* Disable DMA for omap7xx -- it doesn't work right. */
- if (cpu_is_omap7xx())
- use_dma = 0;
-
- INFO("%s, version: " DRIVER_VERSION
-#ifdef USE_ISO
- " (iso)"
-#endif
- "%s\n", driver_desc,
- use_dma ? " (dma)" : "");
- return platform_driver_probe(&udc_driver, omap_udc_probe);
-}
-module_init(udc_init);
-
-static void __exit udc_exit(void)
-{
- platform_driver_unregister(&udc_driver);
-}
-module_exit(udc_exit);
+module_platform_driver(udc_driver);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
return;
}
if ((td->status & PCH_UDC_BUFF_STS) == PCH_UDC_BS_DMA_DONE)
- if (td->status | PCH_UDC_DMA_LAST) {
+ if (td->status & PCH_UDC_DMA_LAST) {
count = td->status & PCH_UDC_RXTX_BYTES;
break;
}
#include <linux/ioport.h>
#include <linux/types.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/init.h>
udc = container_of(_gadget, struct pxa25x_udc, gadget);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return usb_phy_set_power(udc->transceiver, mA);
return -EOPNOTSUPP;
}
DMSG("registered gadget driver '%s'\n", driver->driver.name);
/* connect to bus through transceiver */
- if (dev->transceiver) {
+ if (!IS_ERR_OR_NULL(dev->transceiver)) {
retval = otg_set_peripheral(dev->transceiver->otg,
&dev->gadget);
if (retval) {
stop_activity(dev, driver);
local_irq_enable();
- if (dev->transceiver)
+ if (!IS_ERR_OR_NULL(dev->transceiver))
(void) otg_set_peripheral(dev->transceiver->otg, NULL);
driver->unbind(&dev->gadget);
dev->dev = &pdev->dev;
dev->mach = pdev->dev.platform_data;
- dev->transceiver = usb_get_transceiver();
+ dev->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
if (gpio_is_valid(dev->mach->gpio_pullup)) {
if ((retval = gpio_request(dev->mach->gpio_pullup,
if (gpio_is_valid(dev->mach->gpio_pullup))
gpio_free(dev->mach->gpio_pullup);
err_gpio_pullup:
- if (dev->transceiver) {
- usb_put_transceiver(dev->transceiver);
+ if (!IS_ERR_OR_NULL(dev->transceiver)) {
+ usb_put_phy(dev->transceiver);
dev->transceiver = NULL;
}
clk_put(dev->clk);
clk_put(dev->clk);
- if (dev->transceiver) {
- usb_put_transceiver(dev->transceiver);
+ if (!IS_ERR_OR_NULL(dev->transceiver)) {
+ usb_put_phy(dev->transceiver);
dev->transceiver = NULL;
}
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/list.h>
int put_on;
put_on = ((udc->pullup_on) && (udc->driver));
- put_on &= ((udc->vbus_sensed) || (!udc->transceiver));
+ put_on &= ((udc->vbus_sensed) || (IS_ERR_OR_NULL(udc->transceiver)));
return put_on;
}
int put_off;
put_off = ((!udc->pullup_on) || (!udc->driver));
- put_off |= ((!udc->vbus_sensed) && (udc->transceiver));
+ put_off |= ((!udc->vbus_sensed) && (!IS_ERR_OR_NULL(udc->transceiver)));
return put_off;
}
struct pxa_udc *udc;
udc = to_gadget_udc(_gadget);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return usb_phy_set_power(udc->transceiver, mA);
return -EOPNOTSUPP;
}
dev_dbg(udc->dev, "registered gadget driver '%s'\n",
driver->driver.name);
- if (udc->transceiver) {
+ if (!IS_ERR_OR_NULL(udc->transceiver)) {
retval = otg_set_peripheral(udc->transceiver->otg,
&udc->gadget);
if (retval) {
dev_info(udc->dev, "unregistered gadget driver '%s'\n",
driver->driver.name);
- if (udc->transceiver)
+ if (!IS_ERR_OR_NULL(udc->transceiver))
return otg_set_peripheral(udc->transceiver->otg, NULL);
return 0;
}
udc->dev = &pdev->dev;
udc->mach = pdev->dev.platform_data;
- udc->transceiver = usb_get_transceiver();
+ udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
gpio = udc->mach->gpio_pullup;
if (gpio_is_valid(gpio)) {
if (gpio_is_valid(gpio))
gpio_free(gpio);
- usb_put_transceiver(udc->transceiver);
+ usb_put_phy(udc->transceiver);
udc->transceiver = NULL;
platform_set_drvdata(_dev, NULL);
struct s3c_hsotg_req *req;
struct dentry *debugfs;
- spinlock_t lock;
unsigned long total_data;
unsigned int size_loaded;
* @driver: USB gadget driver
* @plat: The platform specific configuration data.
* @regs: The memory area mapped for accessing registers.
- * @regs_res: The resource that was allocated when claiming register space.
* @irq: The IRQ number we are using
* @supplies: Definition of USB power supplies
* @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos.
struct usb_gadget_driver *driver;
struct s3c_hsotg_plat *plat;
+ spinlock_t lock;
+
void __iomem *regs;
- struct resource *regs_res;
int irq;
struct clk *clk;
struct s3c_hsotg_req *hs_req = our_req(req);
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
struct s3c_hsotg *hs = hs_ep->parent;
- unsigned long irqflags;
bool first;
dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n",
return ret;
}
- spin_lock_irqsave(&hs_ep->lock, irqflags);
-
first = list_empty(&hs_ep->queue);
list_add_tail(&hs_req->queue, &hs_ep->queue);
if (first)
s3c_hsotg_start_req(hs, hs_ep, hs_req, false);
- spin_unlock_irqrestore(&hs_ep->lock, irqflags);
-
return 0;
}
+static int s3c_hsotg_ep_queue_lock(struct usb_ep *ep, struct usb_request *req,
+ gfp_t gfp_flags)
+{
+ struct s3c_hsotg_ep *hs_ep = our_ep(ep);
+ struct s3c_hsotg *hs = hs_ep->parent;
+ unsigned long flags = 0;
+ int ret = 0;
+
+ spin_lock_irqsave(&hs->lock, flags);
+ ret = s3c_hsotg_ep_queue(ep, req, gfp_flags);
+ spin_unlock_irqrestore(&hs->lock, flags);
+
+ return ret;
+}
+
static void s3c_hsotg_ep_free_request(struct usb_ep *ep,
struct usb_request *req)
{
*/
if (hs_req->req.complete) {
- spin_unlock(&hs_ep->lock);
+ spin_unlock(&hsotg->lock);
hs_req->req.complete(&hs_ep->ep, &hs_req->req);
- spin_lock(&hs_ep->lock);
+ spin_lock(&hsotg->lock);
}
/*
}
/**
- * s3c_hsotg_complete_request_lock - complete a request given to us (locked)
- * @hsotg: The device state.
- * @hs_ep: The endpoint the request was on.
- * @hs_req: The request to complete.
- * @result: The result code (0 => Ok, otherwise errno)
- *
- * See s3c_hsotg_complete_request(), but called with the endpoint's
- * lock held.
- */
-static void s3c_hsotg_complete_request_lock(struct s3c_hsotg *hsotg,
- struct s3c_hsotg_ep *hs_ep,
- struct s3c_hsotg_req *hs_req,
- int result)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hs_ep->lock, flags);
- s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result);
- spin_unlock_irqrestore(&hs_ep->lock, flags);
-}
-
-/**
* s3c_hsotg_rx_data - receive data from the FIFO for an endpoint
* @hsotg: The device state.
* @ep_idx: The endpoint index for the data
int max_req;
int read_ptr;
+
if (!hs_req) {
u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx));
int ptr;
return;
}
- spin_lock(&hs_ep->lock);
-
to_read = size;
read_ptr = hs_req->req.actual;
max_req = hs_req->req.length - read_ptr;
* alignment of the data.
*/
readsl(fifo, hs_req->req.buf + read_ptr, to_read);
-
- spin_unlock(&hs_ep->lock);
}
/**
s3c_hsotg_send_zlp(hsotg, hs_req);
}
- s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, result);
+ s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result);
}
/**
/* Finish ZLP handling for IN EP0 transactions */
if (hsotg->eps[0].sent_zlp) {
dev_dbg(hsotg->dev, "zlp packet received\n");
- s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, 0);
+ s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
return;
}
dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__);
s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true);
} else
- s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, 0);
+ s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
}
/**
int result, bool force)
{
struct s3c_hsotg_req *req, *treq;
- unsigned long flags;
-
- spin_lock_irqsave(&ep->lock, flags);
list_for_each_entry_safe(req, treq, &ep->queue, queue) {
/*
s3c_hsotg_complete_request(hsotg, ep, req,
result);
}
-
- spin_unlock_irqrestore(&ep->lock, flags);
}
#define call_gadget(_hs, _entry) \
if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \
- (_hs)->driver && (_hs)->driver->_entry) \
- (_hs)->driver->_entry(&(_hs)->gadget);
+ (_hs)->driver && (_hs)->driver->_entry) { \
+ spin_unlock(&_hs->lock); \
+ (_hs)->driver->_entry(&(_hs)->gadget); \
+ spin_lock(&_hs->lock); \
+ }
/**
* s3c_hsotg_disconnect - disconnect service
u32 gintsts;
u32 gintmsk;
+ spin_lock(&hsotg->lock);
irq_retry:
gintsts = readl(hsotg->regs + GINTSTS);
gintmsk = readl(hsotg->regs + GINTMSK);
if (gintsts & IRQ_RETRY_MASK && --retry_count > 0)
goto irq_retry;
+ spin_unlock(&hsotg->lock);
+
return IRQ_HANDLED;
}
dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n",
__func__, epctrl, epctrl_reg);
- spin_lock_irqsave(&hs_ep->lock, flags);
+ spin_lock_irqsave(&hsotg->lock, flags);
epctrl &= ~(DxEPCTL_EPType_MASK | DxEPCTL_MPS_MASK);
epctrl |= DxEPCTL_MPS(mps);
s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1);
out:
- spin_unlock_irqrestore(&hs_ep->lock, flags);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
return ret;
}
epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index);
+ spin_lock_irqsave(&hsotg->lock, flags);
/* terminate all requests with shutdown */
kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false);
- spin_lock_irqsave(&hs_ep->lock, flags);
ctrl = readl(hsotg->regs + epctrl_reg);
ctrl &= ~DxEPCTL_EPEna;
/* disable endpoint interrupts */
s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0);
- spin_unlock_irqrestore(&hs_ep->lock, flags);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
return 0;
}
dev_info(hs->dev, "ep_dequeue(%p,%p)\n", ep, req);
- spin_lock_irqsave(&hs_ep->lock, flags);
+ spin_lock_irqsave(&hs->lock, flags);
if (!on_list(hs_ep, hs_req)) {
- spin_unlock_irqrestore(&hs_ep->lock, flags);
+ spin_unlock_irqrestore(&hs->lock, flags);
return -EINVAL;
}
s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET);
- spin_unlock_irqrestore(&hs_ep->lock, flags);
+ spin_unlock_irqrestore(&hs->lock, flags);
return 0;
}
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
struct s3c_hsotg *hs = hs_ep->parent;
int index = hs_ep->index;
- unsigned long irqflags;
u32 epreg;
u32 epctl;
u32 xfertype;
dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value);
- spin_lock_irqsave(&hs_ep->lock, irqflags);
-
/* write both IN and OUT control registers */
epreg = DIEPCTL(index);
writel(epctl, hs->regs + epreg);
- spin_unlock_irqrestore(&hs_ep->lock, irqflags);
-
return 0;
}
+/**
+ * s3c_hsotg_ep_sethalt_lock - set halt on a given endpoint with lock held
+ * @ep: The endpoint to set halt.
+ * @value: Set or unset the halt.
+ */
+static int s3c_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value)
+{
+ struct s3c_hsotg_ep *hs_ep = our_ep(ep);
+ struct s3c_hsotg *hs = hs_ep->parent;
+ unsigned long flags = 0;
+ int ret = 0;
+
+ spin_lock_irqsave(&hs->lock, flags);
+ ret = s3c_hsotg_ep_sethalt(ep, value);
+ spin_unlock_irqrestore(&hs->lock, flags);
+
+ return ret;
+}
+
static struct usb_ep_ops s3c_hsotg_ep_ops = {
.enable = s3c_hsotg_ep_enable,
.disable = s3c_hsotg_ep_disable,
.alloc_request = s3c_hsotg_ep_alloc_request,
.free_request = s3c_hsotg_ep_free_request,
- .queue = s3c_hsotg_ep_queue,
+ .queue = s3c_hsotg_ep_queue_lock,
.dequeue = s3c_hsotg_ep_dequeue,
- .set_halt = s3c_hsotg_ep_sethalt,
+ .set_halt = s3c_hsotg_ep_sethalt_lock,
/* note, don't believe we have any call for the fifo routines */
};
driver->driver.bus = NULL;
hsotg->driver = driver;
hsotg->gadget.dev.driver = &driver->driver;
+ hsotg->gadget.dev.of_node = hsotg->dev->of_node;
hsotg->gadget.dev.dma_mask = hsotg->dev->dma_mask;
hsotg->gadget.speed = USB_SPEED_UNKNOWN;
goto err;
}
- s3c_hsotg_phy_enable(hsotg);
-
- s3c_hsotg_core_init(hsotg);
hsotg->last_rst = jiffies;
dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name);
return 0;
struct usb_gadget_driver *driver)
{
struct s3c_hsotg *hsotg = to_hsotg(gadget);
+ unsigned long flags = 0;
int ep;
if (!hsotg)
for (ep = 0; ep < hsotg->num_of_eps; ep++)
s3c_hsotg_ep_disable(&hsotg->eps[ep].ep);
+ spin_lock_irqsave(&hsotg->lock, flags);
+
s3c_hsotg_phy_disable(hsotg);
regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
hsotg->gadget.speed = USB_SPEED_UNKNOWN;
hsotg->gadget.dev.driver = NULL;
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
dev_info(hsotg->dev, "unregistered gadget driver '%s'\n",
driver->driver.name);
return s3c_hsotg_read_frameno(to_hsotg(gadget));
}
+/**
+ * s3c_hsotg_pullup - connect/disconnect the USB PHY
+ * @gadget: The usb gadget state
+ * @is_on: Current state of the USB PHY
+ *
+ * Connect/Disconnect the USB PHY pullup
+ */
+static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on)
+{
+ struct s3c_hsotg *hsotg = to_hsotg(gadget);
+ unsigned long flags = 0;
+
+ dev_dbg(hsotg->dev, "%s: is_in: %d\n", __func__, is_on);
+
+ spin_lock_irqsave(&hsotg->lock, flags);
+ if (is_on) {
+ s3c_hsotg_phy_enable(hsotg);
+ s3c_hsotg_core_init(hsotg);
+ } else {
+ s3c_hsotg_disconnect(hsotg);
+ s3c_hsotg_phy_disable(hsotg);
+ }
+
+ hsotg->gadget.speed = USB_SPEED_UNKNOWN;
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
+ return 0;
+}
+
static struct usb_gadget_ops s3c_hsotg_gadget_ops = {
.get_frame = s3c_hsotg_gadget_getframe,
.udc_start = s3c_hsotg_udc_start,
.udc_stop = s3c_hsotg_udc_stop,
+ .pullup = s3c_hsotg_pullup,
};
/**
INIT_LIST_HEAD(&hs_ep->queue);
INIT_LIST_HEAD(&hs_ep->ep.ep_list);
- spin_lock_init(&hs_ep->lock);
-
/* add to the list of endpoints known by the gadget driver */
if (epnum)
list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list);
seq_printf(seq, "request list (%p,%p):\n",
ep->queue.next, ep->queue.prev);
- spin_lock_irqsave(&ep->lock, flags);
+ spin_lock_irqsave(&hsotg->lock, flags);
list_for_each_entry(req, &ep->queue, queue) {
if (--show_limit < 0) {
req->req.actual, req->req.status);
}
- spin_unlock_irqrestore(&ep->lock, flags);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
return 0;
}
return -EINVAL;
}
- hsotg = kzalloc(sizeof(struct s3c_hsotg), GFP_KERNEL);
+ hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL);
if (!hsotg) {
dev_err(dev, "cannot get memory\n");
return -ENOMEM;
hsotg->clk = clk_get(&pdev->dev, "otg");
if (IS_ERR(hsotg->clk)) {
dev_err(dev, "cannot get otg clock\n");
- ret = PTR_ERR(hsotg->clk);
- goto err_mem;
+ return PTR_ERR(hsotg->clk);
}
platform_set_drvdata(pdev, hsotg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(dev, "cannot find register resource 0\n");
- ret = -EINVAL;
- goto err_clk;
- }
-
- hsotg->regs_res = request_mem_region(res->start, resource_size(res),
- dev_name(dev));
- if (!hsotg->regs_res) {
- dev_err(dev, "cannot reserve registers\n");
- ret = -ENOENT;
- goto err_clk;
- }
- hsotg->regs = ioremap(res->start, resource_size(res));
+ hsotg->regs = devm_request_and_ioremap(&pdev->dev, res);
if (!hsotg->regs) {
dev_err(dev, "cannot map registers\n");
ret = -ENXIO;
- goto err_regs_res;
+ goto err_clk;
}
ret = platform_get_irq(pdev, 0);
if (ret < 0) {
dev_err(dev, "cannot find IRQ\n");
- goto err_regs;
+ goto err_clk;
}
+ spin_lock_init(&hsotg->lock);
+
hsotg->irq = ret;
- ret = request_irq(ret, s3c_hsotg_irq, 0, dev_name(dev), hsotg);
+ ret = devm_request_irq(&pdev->dev, hsotg->irq, s3c_hsotg_irq, 0,
+ dev_name(dev), hsotg);
if (ret < 0) {
dev_err(dev, "cannot claim IRQ\n");
- goto err_regs;
+ goto err_clk;
}
dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq);
hsotg->supplies);
if (ret) {
dev_err(dev, "failed to request supplies: %d\n", ret);
- goto err_irq;
+ goto err_clk;
}
ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
err_supplies:
s3c_hsotg_phy_disable(hsotg);
regulator_bulk_free(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
-err_irq:
- free_irq(hsotg->irq, hsotg);
-err_regs:
- iounmap(hsotg->regs);
-
-err_regs_res:
- release_resource(hsotg->regs_res);
- kfree(hsotg->regs_res);
+
err_clk:
clk_disable_unprepare(hsotg->clk);
clk_put(hsotg->clk);
-err_mem:
- kfree(hsotg);
+
return ret;
}
usb_gadget_unregister_driver(hsotg->driver);
}
- free_irq(hsotg->irq, hsotg);
- iounmap(hsotg->regs);
-
- release_resource(hsotg->regs_res);
- kfree(hsotg->regs_res);
-
s3c_hsotg_phy_disable(hsotg);
regulator_bulk_free(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
}
/* connect to bus through transceiver */
- if (hsudc->transceiver) {
+ if (!IS_ERR_OR_NULL(hsudc->transceiver)) {
ret = otg_set_peripheral(hsudc->transceiver->otg,
&hsudc->gadget);
if (ret) {
s3c_hsudc_stop_activity(hsudc);
spin_unlock_irqrestore(&hsudc->lock, flags);
- if (hsudc->transceiver)
+ if (!IS_ERR_OR_NULL(hsudc->transceiver))
(void) otg_set_peripheral(hsudc->transceiver->otg, NULL);
disable_irq(hsudc->irq);
if (!hsudc)
return -ENODEV;
- if (hsudc->transceiver)
+ if (!IS_ERR_OR_NULL(hsudc->transceiver))
return usb_phy_set_power(hsudc->transceiver, mA);
return -EOPNOTSUPP;
hsudc->dev = dev;
hsudc->pd = pdev->dev.platform_data;
- hsudc->transceiver = usb_get_transceiver();
+ hsudc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
for (i = 0; i < ARRAY_SIZE(hsudc->supplies); i++)
hsudc->supplies[i].supply = s3c_hsudc_supply_names[i];
err_remap:
release_mem_region(res->start, resource_size(res));
err_res:
- if (hsudc->transceiver)
- usb_put_transceiver(hsudc->transceiver);
+ if (!IS_ERR_OR_NULL(hsudc->transceiver))
+ usb_put_phy(hsudc->transceiver);
regulator_bulk_free(ARRAY_SIZE(hsudc->supplies), hsudc->supplies);
err_supplies:
*/
/*
- * When FSG_BUFFHD_STATIC_BUFFER is defined when this file is included
- * the fsg_buffhd structure's buf field will be an array of FSG_BUFLEN
- * characters rather then a pointer to void.
- */
-
-/*
* When USB_GADGET_DEBUG_FILES is defined the module param num_buffers
* sets the number of pipeline buffers (length of the fsg_buffhd array).
* The valid range of num_buffers is: num >= 2 && num <= 4.
};
struct fsg_buffhd {
-#ifdef FSG_BUFFHD_STATIC_BUFFER
- char buf[FSG_BUFLEN];
-#else
void *buf;
-#endif
enum fsg_buffer_state state;
struct fsg_buffhd *next;
* the caller must own fsg->filesem for writing.
*/
+static void fsg_lun_close(struct fsg_lun *curlun)
+{
+ if (curlun->filp) {
+ LDBG(curlun, "close backing file\n");
+ fput(curlun->filp);
+ curlun->filp = NULL;
+ }
+}
+
+
static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
{
int ro;
loff_t size;
loff_t num_sectors;
loff_t min_sectors;
+ unsigned int blkbits;
+ unsigned int blksize;
/* R/W if we can, R/O if we must */
ro = curlun->initially_ro;
}
if (curlun->cdrom) {
- curlun->blksize = 2048;
- curlun->blkbits = 11;
+ blksize = 2048;
+ blkbits = 11;
} else if (inode->i_bdev) {
- curlun->blksize = bdev_logical_block_size(inode->i_bdev);
- curlun->blkbits = blksize_bits(curlun->blksize);
+ blksize = bdev_logical_block_size(inode->i_bdev);
+ blkbits = blksize_bits(blksize);
} else {
- curlun->blksize = 512;
- curlun->blkbits = 9;
+ blksize = 512;
+ blkbits = 9;
}
- num_sectors = size >> curlun->blkbits; /* File size in logic-block-size blocks */
+ num_sectors = size >> blkbits; /* File size in logic-block-size blocks */
min_sectors = 1;
if (curlun->cdrom) {
min_sectors = 300; /* Smallest track is 300 frames */
goto out;
}
+ if (fsg_lun_is_open(curlun))
+ fsg_lun_close(curlun);
+
get_file(filp);
+ curlun->blksize = blksize;
+ curlun->blkbits = blkbits;
curlun->ro = ro;
curlun->filp = filp;
curlun->file_length = size;
}
-static void fsg_lun_close(struct fsg_lun *curlun)
-{
- if (curlun->filp) {
- LDBG(curlun, "close backing file\n");
- fput(curlun->filp);
- curlun->filp = NULL;
- }
-}
-
-
/*-------------------------------------------------------------------------*/
/*
if (count > 0 && buf[count-1] == '\n')
((char *) buf)[count-1] = 0; /* Ugh! */
- /* Eject current medium */
- down_write(filesem);
- if (fsg_lun_is_open(curlun)) {
- fsg_lun_close(curlun);
- curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT;
- }
-
/* Load new medium */
+ down_write(filesem);
if (count > 0 && buf[0]) {
+ /* fsg_lun_open() will close existing file if any. */
rc = fsg_lun_open(curlun, buf);
if (rc == 0)
curlun->unit_attention_data =
SS_NOT_READY_TO_READY_TRANSITION;
+ } else if (fsg_lun_is_open(curlun)) {
+ fsg_lun_close(curlun);
+ curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT;
}
up_write(filesem);
return (rc < 0 ? rc : count);
SET_ETHTOOL_OPS(net, &ops);
- /* two kinds of host-initiated state changes:
- * - iff DATA transfer is active, carrier is "on"
- * - tx queueing enabled if open *and* carrier is "on"
- */
- netif_carrier_off(net);
-
dev->gadget = g;
SET_NETDEV_DEV(net, &g->dev);
SET_NETDEV_DEVTYPE(net, &gadget_type);
INFO(dev, "HOST MAC %pM\n", dev->host_mac);
the_dev = dev;
+
+ /* two kinds of host-initiated state changes:
+ * - iff DATA transfer is active, carrier is "on"
+ * - tx queueing enabled if open *and* carrier is "on"
+ */
+ netif_carrier_off(net);
}
return status;
/* Descriptors */
struct {
- const struct uvc_descriptor_header * const *control;
+ const struct uvc_descriptor_header * const *fs_control;
+ const struct uvc_descriptor_header * const *ss_control;
const struct uvc_descriptor_header * const *fs_streaming;
const struct uvc_descriptor_header * const *hs_streaming;
+ const struct uvc_descriptor_header * const *ss_streaming;
} desc;
unsigned int control_intf;
.bMatrixCoefficients = 4,
};
-static const struct uvc_descriptor_header * const uvc_control_cls[] = {
+static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = {
+ (const struct uvc_descriptor_header *) &uvc_control_header,
+ (const struct uvc_descriptor_header *) &uvc_camera_terminal,
+ (const struct uvc_descriptor_header *) &uvc_processing,
+ (const struct uvc_descriptor_header *) &uvc_output_terminal,
+ NULL,
+};
+
+static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = {
(const struct uvc_descriptor_header *) &uvc_control_header,
(const struct uvc_descriptor_header *) &uvc_camera_terminal,
(const struct uvc_descriptor_header *) &uvc_processing,
NULL,
};
+static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = {
+ (const struct uvc_descriptor_header *) &uvc_input_header,
+ (const struct uvc_descriptor_header *) &uvc_format_yuv,
+ (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
+ (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
+ (const struct uvc_descriptor_header *) &uvc_format_mjpg,
+ (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
+ (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
+ (const struct uvc_descriptor_header *) &uvc_color_matching,
+ NULL,
+};
+
/* --------------------------------------------------------------------------
* USB configuration
*/
static int __init
webcam_config_bind(struct usb_configuration *c)
{
- return uvc_bind_config(c, uvc_control_cls, uvc_fs_streaming_cls,
- uvc_hs_streaming_cls);
+ return uvc_bind_config(c, uvc_fs_control_cls, uvc_ss_control_cls,
+ uvc_fs_streaming_cls, uvc_hs_streaming_cls,
+ uvc_ss_streaming_cls);
}
static struct usb_configuration webcam_config_driver = {
.name = "g_webcam",
.dev = &webcam_device_descriptor,
.strings = webcam_device_strings,
- .max_speed = USB_SPEED_HIGH,
+ .max_speed = USB_SPEED_SUPER,
.unbind = webcam_unbind,
};
select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
help
- Enbale support for the EHCI and OCHI host controller on an bcma bus.
+ Enable support for the EHCI and OCHI host controller on an bcma bus.
It converts the bcma driver into two platform device drivers
for ehci and ohci.
select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
help
- Enbale support for the EHCI and OCHI host controller on an bcma bus.
+ Enable support for the EHCI and OCHI host controller on an bcma bus.
It converts the bcma driver into two platform device drivers
for ehci and ohci.
static int ehci_atmel_setup(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- int retval = 0;
+ int retval;
/* registers start at offset 0x0 */
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
- /* data structure init */
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
- ehci->sbrn = 0x20;
-
- ehci_reset(ehci);
ehci_port_power(ehci, 0);
return retval;
static int au1xxx_ehci_setup(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- int ret = ehci_init(hcd);
+ int ret;
+
+ ehci->caps = hcd->regs;
+ ret = ehci_setup(hcd);
ehci->need_io_watchdog = 0;
- ehci_reset(ehci);
return ret;
}
static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
{
struct usb_hcd *hcd;
- struct ehci_hcd *ehci;
struct resource *res;
int ret;
goto err3;
}
- ehci = hcd_to_ehci(hcd);
- ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = readl(&ehci->caps->hcs_params);
-
ret = usb_add_hcd(hcd, pdev->resource[1].start,
IRQF_SHARED);
if (ret == 0) {
static int ehci_hcd_au1xxx_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- unsigned long flags;
- int rc = 0;
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(10);
-
- /* Root hub was already suspended. Disable irq emission and
- * mark HW unaccessible. The PM and USB cores make sure that
- * the root hub is either suspended or stopped.
- */
- ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev));
- spin_lock_irqsave(&ehci->lock, flags);
- ehci_writel(ehci, 0, &ehci->regs->intr_enable);
- (void)ehci_readl(ehci, &ehci->regs->intr_enable);
-
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
- spin_unlock_irqrestore(&ehci->lock, flags);
-
- // could save FLADJ in case of Vaux power loss
- // ... we'd only use it to handle clock skew
+ bool do_wakeup = device_may_wakeup(dev);
+ int rc;
+ rc = ehci_suspend(hcd, do_wakeup);
alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
return rc;
static int ehci_hcd_au1xxx_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
-
- // maybe restore FLADJ
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(100);
-
- /* Mark hardware accessible again as we are out of D3 state by now */
- set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
- /* If CF is still set, we maintained PCI Vaux power.
- * Just undo the effect of ehci_pci_suspend().
- */
- if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
- int mask = INTR_MASK;
-
- ehci_prepare_ports_for_controller_resume(ehci);
- if (!hcd->self.root_hub->do_remote_wakeup)
- mask &= ~STS_PCD;
- ehci_writel(ehci, mask, &ehci->regs->intr_enable);
- ehci_readl(ehci, &ehci->regs->intr_enable);
- return 0;
- }
-
- ehci_dbg(ehci, "lost power, restarting\n");
- usb_root_hub_lost_power(hcd->self.root_hub);
-
- /* Else reset, to cope with power loss or flush-to-storage
- * style "resume" having let BIOS kick in during reboot.
- */
- (void) ehci_halt(ehci);
- (void) ehci_reset(ehci);
-
- /* emptying the schedule aborts any urbs */
- spin_lock_irq(&ehci->lock);
- if (ehci->reclaim)
- end_unlink_async(ehci);
- ehci_work(ehci);
- spin_unlock_irq(&ehci->lock);
-
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
- ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
-
- /* here we "know" root ports should always stay powered */
- ehci_port_power(ehci, 1);
-
- ehci->rh_state = EHCI_RH_SUSPENDED;
+ ehci_resume(hcd, false);
return 0;
}
}
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs
- + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
hcd->has_tt = 0;
- ehci_reset(ehci);
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
#define speed_char(info1) ({ char tmp; \
switch (info1 & (3 << 12)) { \
- case 0 << 12: tmp = 'f'; break; \
- case 1 << 12: tmp = 'l'; break; \
- case 2 << 12: tmp = 'h'; break; \
+ case QH_FULL_SPEED: tmp = 'f'; break; \
+ case QH_LOW_SPEED: tmp = 'l'; break; \
+ case QH_HIGH_SPEED: tmp = 'h'; break; \
default: tmp = '?'; break; \
}; tmp; })
spin_lock_irqsave (&ehci->lock, flags);
for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
qh_lines (ehci, qh, &next, &size);
- if (ehci->reclaim && size > 0) {
- temp = scnprintf (next, size, "\nreclaim =\n");
+ if (ehci->async_unlink && size > 0) {
+ temp = scnprintf(next, size, "\nunlink =\n");
size -= temp;
next += temp;
- for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim)
+ for (qh = ehci->async_unlink; size > 0 && qh;
+ qh = qh->unlink_next)
qh_lines (ehci, qh, &next, &size);
}
spin_unlock_irqrestore (&ehci->lock, flags);
return "suspended";
case EHCI_RH_RUNNING:
return "running";
+ case EHCI_RH_STOPPING:
+ return "stopping";
}
return "?";
}
}
}
- if (ehci->reclaim) {
- temp = scnprintf(next, size, "reclaim qh %p\n", ehci->reclaim);
+ if (ehci->async_unlink) {
+ temp = scnprintf(next, size, "async unlink qh %p\n",
+ ehci->async_unlink);
size -= temp;
next += temp;
}
#ifdef EHCI_STATS
temp = scnprintf (next, size,
- "irq normal %ld err %ld reclaim %ld (lost %ld)\n",
- ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
+ "irq normal %ld err %ld iaa %ld (lost %ld)\n",
+ ehci->stats.normal, ehci->stats.error, ehci->stats.iaa,
ehci->stats.lost_iaa);
size -= temp;
next += temp;
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/pm.h>
+#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
if (pdata->operating_mode == FSL_USB2_DR_OTG) {
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- ehci->transceiver = usb_get_transceiver();
- dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, transceiver=0x%p\n",
- hcd, ehci, ehci->transceiver);
+ hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2);
+ dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n",
+ hcd, ehci, hcd->phy);
- if (ehci->transceiver) {
- retval = otg_set_host(ehci->transceiver->otg,
+ if (!IS_ERR_OR_NULL(hcd->phy)) {
+ retval = otg_set_host(hcd->phy->otg,
&ehci_to_hcd(ehci)->self);
if (retval) {
- usb_put_transceiver(ehci->transceiver);
+ usb_put_phy(hcd->phy);
goto err4;
}
} else {
- dev_err(&pdev->dev, "can't find transceiver\n");
+ dev_err(&pdev->dev, "can't find phy\n");
retval = -ENODEV;
goto err4;
}
struct platform_device *pdev)
{
struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- if (ehci->transceiver) {
- otg_set_host(ehci->transceiver->otg, NULL);
- usb_put_transceiver(ehci->transceiver);
+ if (!IS_ERR_OR_NULL(hcd->phy)) {
+ otg_set_host(hcd->phy->otg, NULL);
+ usb_put_phy(hcd->phy);
}
usb_remove_hcd(hcd);
}
if (pdata->have_sysif_regs) {
-#ifdef CONFIG_PPC_85xx
+#ifdef CONFIG_FSL_SOC_BOOKE
out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
#else
/* EHCI registers start at offset 0x100 */
ehci->caps = hcd->regs + 0x100;
- ehci->regs = hcd->regs + 0x100 +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
hcd->has_tt = 1;
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
-
- /* data structure init */
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
- ehci->sbrn = 0x20;
-
- ehci_reset(ehci);
-
if (of_device_is_compatible(dev->parent->of_node,
"fsl,mpc5121-usb2-dr")) {
/*
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int retval;
- retval = ehci_halt(ehci);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
- retval = ehci_init(hcd);
- if (retval)
- return retval;
-
- ehci->sbrn = 0x20;
ehci_port_power(ehci, 1);
- return ehci_reset(ehci);
+ return retval;
}
ehci->big_endian_capbase = 1;
}
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
rv = usb_add_hcd(hcd, irq, 0);
if (rv)
goto err_ehci;
#include <linux/vmalloc.h>
#include <linux/errno.h>
#include <linux/init.h>
-#include <linux/timer.h>
-#include <linux/ktime.h>
+#include <linux/hrtimer.h>
#include <linux/list.h>
#include <linux/interrupt.h>
#include <linux/usb.h>
*/
#define EHCI_TUNE_FLS 1 /* (medium) 512-frame schedule */
-#define EHCI_IAA_MSECS 10 /* arbitrary */
-#define EHCI_IO_JIFFIES (HZ/10) /* io watchdog > irq_thresh */
-#define EHCI_ASYNC_JIFFIES (HZ/20) /* async idle timeout */
-#define EHCI_SHRINK_JIFFIES (DIV_ROUND_UP(HZ, 200) + 1)
- /* 5-ms async qh unlink delay */
-
/* Initial IRQ latency: faster than hw default */
static int log2_irq_thresh = 0; // 0 to 6
module_param (log2_irq_thresh, int, S_IRUGO);
/*-------------------------------------------------------------------------*/
-static void
-timer_action(struct ehci_hcd *ehci, enum ehci_timer_action action)
-{
- /* Don't override timeouts which shrink or (later) disable
- * the async ring; just the I/O watchdog. Note that if a
- * SHRINK were pending, OFF would never be requested.
- */
- if (timer_pending(&ehci->watchdog)
- && ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF))
- & ehci->actions))
- return;
-
- if (!test_and_set_bit(action, &ehci->actions)) {
- unsigned long t;
-
- switch (action) {
- case TIMER_IO_WATCHDOG:
- if (!ehci->need_io_watchdog)
- return;
- t = EHCI_IO_JIFFIES;
- break;
- case TIMER_ASYNC_OFF:
- t = EHCI_ASYNC_JIFFIES;
- break;
- /* case TIMER_ASYNC_SHRINK: */
- default:
- t = EHCI_SHRINK_JIFFIES;
- break;
- }
- mod_timer(&ehci->watchdog, t + jiffies);
- }
-}
-
-/*-------------------------------------------------------------------------*/
-
/*
* handshake - spin reading hc until handshake completes or fails
* @ptr: address of hc register to be read
/* check TDI/ARC silicon is in host mode */
static int tdi_in_host_mode (struct ehci_hcd *ehci)
{
- u32 __iomem *reg_ptr;
u32 tmp;
- reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + USBMODE);
- tmp = ehci_readl(ehci, reg_ptr);
+ tmp = ehci_readl(ehci, &ehci->regs->usbmode);
return (tmp & 3) == USBMODE_CM_HC;
}
-/* force HC to halt state from unknown (EHCI spec section 2.3) */
+/*
+ * Force HC to halt state from unknown (EHCI spec section 2.3).
+ * Must be called with interrupts enabled and the lock not held.
+ */
static int ehci_halt (struct ehci_hcd *ehci)
{
- u32 temp = ehci_readl(ehci, &ehci->regs->status);
+ u32 temp;
+
+ spin_lock_irq(&ehci->lock);
/* disable any irqs left enabled by previous code */
ehci_writel(ehci, 0, &ehci->regs->intr_enable);
- if (ehci_is_TDI(ehci) && tdi_in_host_mode(ehci) == 0) {
+ if (ehci_is_TDI(ehci) && !tdi_in_host_mode(ehci)) {
+ spin_unlock_irq(&ehci->lock);
return 0;
}
- if ((temp & STS_HALT) != 0)
- return 0;
-
/*
* This routine gets called during probe before ehci->command
* has been initialized, so we can't rely on its value.
temp = ehci_readl(ehci, &ehci->regs->command);
temp &= ~(CMD_RUN | CMD_IAAD);
ehci_writel(ehci, temp, &ehci->regs->command);
- return handshake (ehci, &ehci->regs->status,
- STS_HALT, STS_HALT, 16 * 125);
-}
-
-#if defined(CONFIG_USB_SUSPEND) && defined(CONFIG_PPC_PS3)
-
-/*
- * The EHCI controller of the Cell Super Companion Chip used in the
- * PS3 will stop the root hub after all root hub ports are suspended.
- * When in this condition handshake will return -ETIMEDOUT. The
- * STS_HLT bit will not be set, so inspection of the frame index is
- * used here to test for the condition. If the condition is found
- * return success to allow the USB suspend to complete.
- */
-
-static int handshake_for_broken_root_hub(struct ehci_hcd *ehci,
- void __iomem *ptr, u32 mask, u32 done,
- int usec)
-{
- unsigned int old_index;
- int error;
-
- if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
- return -ETIMEDOUT;
-
- old_index = ehci_read_frame_index(ehci);
-
- error = handshake(ehci, ptr, mask, done, usec);
-
- if (error == -ETIMEDOUT && ehci_read_frame_index(ehci) == old_index)
- return 0;
-
- return error;
-}
-
-#else
-
-static int handshake_for_broken_root_hub(struct ehci_hcd *ehci,
- void __iomem *ptr, u32 mask, u32 done,
- int usec)
-{
- return -ETIMEDOUT;
-}
-
-#endif
-static int handshake_on_error_set_halt(struct ehci_hcd *ehci, void __iomem *ptr,
- u32 mask, u32 done, int usec)
-{
- int error;
-
- error = handshake(ehci, ptr, mask, done, usec);
- if (error == -ETIMEDOUT)
- error = handshake_for_broken_root_hub(ehci, ptr, mask, done,
- usec);
-
- if (error) {
- ehci_halt(ehci);
- ehci->rh_state = EHCI_RH_HALTED;
- ehci_err(ehci, "force halt; handshake %p %08x %08x -> %d\n",
- ptr, mask, done, error);
- }
+ spin_unlock_irq(&ehci->lock);
+ synchronize_irq(ehci_to_hcd(ehci)->irq);
- return error;
+ return handshake(ehci, &ehci->regs->status,
+ STS_HALT, STS_HALT, 16 * 125);
}
/* put TDI/ARC silicon into EHCI mode */
static void tdi_reset (struct ehci_hcd *ehci)
{
- u32 __iomem *reg_ptr;
u32 tmp;
- reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + USBMODE);
- tmp = ehci_readl(ehci, reg_ptr);
+ tmp = ehci_readl(ehci, &ehci->regs->usbmode);
tmp |= USBMODE_CM_HC;
/* The default byte access to MMR space is LE after
* controller reset. Set the required endian mode
*/
if (ehci_big_endian_mmio(ehci))
tmp |= USBMODE_BE;
- ehci_writel(ehci, tmp, reg_ptr);
+ ehci_writel(ehci, tmp, &ehci->regs->usbmode);
}
-/* reset a non-running (STS_HALT == 1) controller */
+/*
+ * Reset a non-running (STS_HALT == 1) controller.
+ * Must be called with interrupts enabled and the lock not held.
+ */
static int ehci_reset (struct ehci_hcd *ehci)
{
int retval;
if (ehci->has_hostpc) {
ehci_writel(ehci, USBMODE_EX_HC | USBMODE_EX_VBPS,
- (u32 __iomem *)(((u8 *)ehci->regs) + USBMODE_EX));
- ehci_writel(ehci, TXFIFO_DEFAULT,
- (u32 __iomem *)(((u8 *)ehci->regs) + TXFILLTUNING));
+ &ehci->regs->usbmode_ex);
+ ehci_writel(ehci, TXFIFO_DEFAULT, &ehci->regs->txfill_tuning);
}
if (retval)
return retval;
return retval;
}
-/* idle the controller (from running) */
+/*
+ * Idle the controller (turn off the schedules).
+ * Must be called with interrupts enabled and the lock not held.
+ */
static void ehci_quiesce (struct ehci_hcd *ehci)
{
u32 temp;
-#ifdef DEBUG
if (ehci->rh_state != EHCI_RH_RUNNING)
- BUG ();
-#endif
+ return;
/* wait for any schedule enables/disables to take effect */
temp = (ehci->command << 10) & (STS_ASS | STS_PSS);
- if (handshake_on_error_set_halt(ehci, &ehci->regs->status,
- STS_ASS | STS_PSS, temp, 16 * 125))
- return;
+ handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, temp, 16 * 125);
/* then disable anything that's still active */
+ spin_lock_irq(&ehci->lock);
ehci->command &= ~(CMD_ASE | CMD_PSE);
ehci_writel(ehci, ehci->command, &ehci->regs->command);
+ spin_unlock_irq(&ehci->lock);
/* hardware can take 16 microframes to turn off ... */
- handshake_on_error_set_halt(ehci, &ehci->regs->status,
- STS_ASS | STS_PSS, 0, 16 * 125);
+ handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, 0, 16 * 125);
}
/*-------------------------------------------------------------------------*/
static void end_unlink_async(struct ehci_hcd *ehci);
+static void unlink_empty_async(struct ehci_hcd *ehci);
static void ehci_work(struct ehci_hcd *ehci);
+static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
+static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
+#include "ehci-timer.c"
#include "ehci-hub.c"
#include "ehci-lpm.c"
#include "ehci-mem.c"
/*-------------------------------------------------------------------------*/
-static void ehci_iaa_watchdog(unsigned long param)
-{
- struct ehci_hcd *ehci = (struct ehci_hcd *) param;
- unsigned long flags;
-
- spin_lock_irqsave (&ehci->lock, flags);
-
- /* Lost IAA irqs wedge things badly; seen first with a vt8235.
- * So we need this watchdog, but must protect it against both
- * (a) SMP races against real IAA firing and retriggering, and
- * (b) clean HC shutdown, when IAA watchdog was pending.
- */
- if (ehci->reclaim
- && !timer_pending(&ehci->iaa_watchdog)
- && ehci->rh_state == EHCI_RH_RUNNING) {
- u32 cmd, status;
-
- /* If we get here, IAA is *REALLY* late. It's barely
- * conceivable that the system is so busy that CMD_IAAD
- * is still legitimately set, so let's be sure it's
- * clear before we read STS_IAA. (The HC should clear
- * CMD_IAAD when it sets STS_IAA.)
- */
- cmd = ehci_readl(ehci, &ehci->regs->command);
-
- /* If IAA is set here it either legitimately triggered
- * before we cleared IAAD above (but _way_ late, so we'll
- * still count it as lost) ... or a silicon erratum:
- * - VIA seems to set IAA without triggering the IRQ;
- * - IAAD potentially cleared without setting IAA.
- */
- status = ehci_readl(ehci, &ehci->regs->status);
- if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
- COUNT (ehci->stats.lost_iaa);
- ehci_writel(ehci, STS_IAA, &ehci->regs->status);
- }
-
- ehci_vdbg(ehci, "IAA watchdog: status %x cmd %x\n",
- status, cmd);
- end_unlink_async(ehci);
- }
-
- spin_unlock_irqrestore(&ehci->lock, flags);
-}
-
-static void ehci_watchdog(unsigned long param)
-{
- struct ehci_hcd *ehci = (struct ehci_hcd *) param;
- unsigned long flags;
-
- spin_lock_irqsave(&ehci->lock, flags);
-
- /* stop async processing after it's idled a bit */
- if (test_bit (TIMER_ASYNC_OFF, &ehci->actions))
- start_unlink_async (ehci, ehci->async);
-
- /* ehci could run by timer, without IRQs ... */
- ehci_work (ehci);
-
- spin_unlock_irqrestore (&ehci->lock, flags);
-}
-
/* On some systems, leaving remote wakeup enabled prevents system shutdown.
* The firmware seems to think that powering off is a wakeup event!
* This routine turns off remote wakeup and everything else, on all ports.
/*
* Halt HC, turn off all ports, and let the BIOS use the companion controllers.
- * Should be called with ehci->lock held.
+ * Must be called with interrupts enabled and the lock not held.
*/
static void ehci_silence_controller(struct ehci_hcd *ehci)
{
ehci_halt(ehci);
+
+ spin_lock_irq(&ehci->lock);
+ ehci->rh_state = EHCI_RH_HALTED;
ehci_turn_off_all_ports(ehci);
/* make BIOS/etc use companion controller during reboot */
/* unblock posted writes */
ehci_readl(ehci, &ehci->regs->configured_flag);
+ spin_unlock_irq(&ehci->lock);
}
/* ehci_shutdown kick in for silicon on any bus (not just pci, etc).
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- del_timer_sync(&ehci->watchdog);
- del_timer_sync(&ehci->iaa_watchdog);
-
spin_lock_irq(&ehci->lock);
- ehci_silence_controller(ehci);
+ ehci->shutdown = true;
+ ehci->rh_state = EHCI_RH_STOPPING;
+ ehci->enabled_hrtimer_events = 0;
spin_unlock_irq(&ehci->lock);
+
+ ehci_silence_controller(ehci);
+
+ hrtimer_cancel(&ehci->hrtimer);
}
static void ehci_port_power (struct ehci_hcd *ehci, int is_on)
*/
static void ehci_work (struct ehci_hcd *ehci)
{
- timer_action_done (ehci, TIMER_IO_WATCHDOG);
-
/* another CPU may drop ehci->lock during a schedule scan while
* it reports urb completions. this flag guards against bogus
* attempts at re-entrant schedule scanning.
*/
- if (ehci->scanning)
+ if (ehci->scanning) {
+ ehci->need_rescan = true;
return;
- ehci->scanning = 1;
- scan_async (ehci);
- if (ehci->next_uframe != -1)
- scan_periodic (ehci);
- ehci->scanning = 0;
+ }
+ ehci->scanning = true;
+
+ rescan:
+ ehci->need_rescan = false;
+ if (ehci->async_count)
+ scan_async(ehci);
+ if (ehci->intr_count > 0)
+ scan_intr(ehci);
+ if (ehci->isoc_count > 0)
+ scan_isoc(ehci);
+ if (ehci->need_rescan)
+ goto rescan;
+ ehci->scanning = false;
/* the IO watchdog guards against hardware or driver bugs that
* misplace IRQs, and should let us run completely without IRQs.
* such lossage has been observed on both VT6202 and VT8235.
*/
- if (ehci->rh_state == EHCI_RH_RUNNING &&
- (ehci->async->qh_next.ptr != NULL ||
- ehci->periodic_sched != 0))
- timer_action (ehci, TIMER_IO_WATCHDOG);
+ turn_on_io_watchdog(ehci);
}
/*
ehci_dbg (ehci, "stop\n");
/* no more interrupts ... */
- del_timer_sync (&ehci->watchdog);
- del_timer_sync(&ehci->iaa_watchdog);
spin_lock_irq(&ehci->lock);
- if (ehci->rh_state == EHCI_RH_RUNNING)
- ehci_quiesce (ehci);
+ ehci->enabled_hrtimer_events = 0;
+ spin_unlock_irq(&ehci->lock);
+ ehci_quiesce(ehci);
ehci_silence_controller(ehci);
ehci_reset (ehci);
- spin_unlock_irq(&ehci->lock);
+ hrtimer_cancel(&ehci->hrtimer);
remove_sysfs_files(ehci);
remove_debug_files (ehci);
/* root hub is shut down separately (first, when possible) */
spin_lock_irq (&ehci->lock);
- if (ehci->async)
- ehci_work (ehci);
+ end_free_itds(ehci);
spin_unlock_irq (&ehci->lock);
ehci_mem_cleanup (ehci);
usb_amd_dev_put();
#ifdef EHCI_STATS
- ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n",
- ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
+ ehci_dbg(ehci, "irq normal %ld err %ld iaa %ld (lost %ld)\n",
+ ehci->stats.normal, ehci->stats.error, ehci->stats.iaa,
ehci->stats.lost_iaa);
ehci_dbg (ehci, "complete %ld unlink %ld\n",
ehci->stats.complete, ehci->stats.unlink);
* keep io watchdog by default, those good HCDs could turn off it later
*/
ehci->need_io_watchdog = 1;
- init_timer(&ehci->watchdog);
- ehci->watchdog.function = ehci_watchdog;
- ehci->watchdog.data = (unsigned long) ehci;
- init_timer(&ehci->iaa_watchdog);
- ehci->iaa_watchdog.function = ehci_iaa_watchdog;
- ehci->iaa_watchdog.data = (unsigned long) ehci;
+ hrtimer_init(&ehci->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+ ehci->hrtimer.function = ehci_hrtimer_func;
+ ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT;
hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params);
* periodic_size can shrink by USBCMD update if hcc_params allows.
*/
ehci->periodic_size = DEFAULT_I_TDPS;
+ INIT_LIST_HEAD(&ehci->intr_qh_list);
INIT_LIST_HEAD(&ehci->cached_itd_list);
INIT_LIST_HEAD(&ehci->cached_sitd_list);
else // N microframes cached
ehci->i_thresh = 2 + HCC_ISOC_THRES(hcc_params);
- ehci->reclaim = NULL;
- ehci->next_uframe = -1;
- ehci->clock_frame = -1;
-
/*
* dedicate a qh for the async ring head, since we couldn't unlink
* a 'real' qh without stopping the async schedule [4.8]. use it
hw->hw_next = QH_NEXT(ehci, ehci->async->qh_dma);
hw->hw_info1 = cpu_to_hc32(ehci, QH_HEAD);
#if defined(CONFIG_PPC_PS3)
- hw->hw_info1 |= cpu_to_hc32(ehci, (1 << 7)); /* I = 1 */
+ hw->hw_info1 |= cpu_to_hc32(ehci, QH_INACTIVATE);
#endif
hw->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT);
hw->hw_qtd_next = EHCI_LIST_END(ehci);
return 0;
}
-static int __maybe_unused ehci_setup (struct usb_hcd *hcd)
+static int ehci_setup(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int retval;
ehci->sbrn = HCD_USB2;
- retval = ehci_halt(ehci);
+ /* data structure init */
+ retval = ehci_init(hcd);
if (retval)
return retval;
- /* data structure init */
- retval = ehci_init(hcd);
+ retval = ehci_halt(ehci);
if (retval)
return retval;
+ if (ehci_is_TDI(ehci))
+ tdi_reset(ehci);
+
ehci_reset(ehci);
return 0;
/* complete the unlinking of some qh [4.15.2.3] */
if (status & STS_IAA) {
+
+ /* Turn off the IAA watchdog */
+ ehci->enabled_hrtimer_events &= ~BIT(EHCI_HRTIMER_IAA_WATCHDOG);
+
+ /*
+ * Mild optimization: Allow another IAAD to reset the
+ * hrtimer, if one occurs before the next expiration.
+ * In theory we could always cancel the hrtimer, but
+ * tests show that about half the time it will be reset
+ * for some other event anyway.
+ */
+ if (ehci->next_hrtimer_event == EHCI_HRTIMER_IAA_WATCHDOG)
+ ++ehci->next_hrtimer_event;
+
/* guard against (alleged) silicon errata */
if (cmd & CMD_IAAD)
ehci_dbg(ehci, "IAA with IAAD still set?\n");
- if (ehci->reclaim) {
- COUNT(ehci->stats.reclaim);
+ if (ehci->async_iaa) {
+ COUNT(ehci->stats.iaa);
end_unlink_async(ehci);
} else
- ehci_dbg(ehci, "IAA with nothing to reclaim?\n");
+ ehci_dbg(ehci, "IAA with nothing unlinked?\n");
}
/* remote wakeup [4.3.1] */
ehci_err(ehci, "fatal error\n");
dbg_cmd(ehci, "fatal", cmd);
dbg_status(ehci, "fatal", status);
- ehci_halt(ehci);
dead:
- ehci_reset(ehci);
- ehci_writel(ehci, 0, &ehci->regs->configured_flag);
usb_hc_died(hcd);
- /* generic layer kills/unlinks all urbs, then
- * uses ehci_stop to clean up the rest
- */
- bh = 1;
+
+ /* Don't let the controller do anything more */
+ ehci->shutdown = true;
+ ehci->rh_state = EHCI_RH_STOPPING;
+ ehci->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE);
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
+ ehci_handle_controller_death(ehci);
+
+ /* Handle completions when the controller stops */
+ bh = 0;
}
if (bh)
}
}
-static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
-{
- /* failfast */
- if (ehci->rh_state != EHCI_RH_RUNNING && ehci->reclaim)
- end_unlink_async(ehci);
-
- /* If the QH isn't linked then there's nothing we can do
- * unless we were called during a giveback, in which case
- * qh_completions() has to deal with it.
- */
- if (qh->qh_state != QH_STATE_LINKED) {
- if (qh->qh_state == QH_STATE_COMPLETING)
- qh->needs_rescan = 1;
- return;
- }
-
- /* defer till later if busy */
- if (ehci->reclaim) {
- struct ehci_qh *last;
-
- for (last = ehci->reclaim;
- last->reclaim;
- last = last->reclaim)
- continue;
- qh->qh_state = QH_STATE_UNLINK_WAIT;
- last->reclaim = qh;
-
- /* start IAA cycle */
- } else
- start_unlink_async (ehci, qh);
-}
-
/* remove from hardware lists
* completions normally happen asynchronously
*/
switch (qh->qh_state) {
case QH_STATE_LINKED:
case QH_STATE_COMPLETING:
- unlink_async(ehci, qh);
+ start_unlink_async(ehci, qh);
break;
case QH_STATE_UNLINK:
case QH_STATE_UNLINK_WAIT:
switch (qh->qh_state) {
case QH_STATE_LINKED:
case QH_STATE_COMPLETING:
- intr_deschedule (ehci, qh);
+ start_unlink_intr(ehci, qh);
break;
case QH_STATE_IDLE:
qh_completions (ehci, qh);
* accelerate iso completions ... so spin a while.
*/
if (qh->hw == NULL) {
- ehci_vdbg (ehci, "iso delay\n");
- goto idle_timeout;
+ struct ehci_iso_stream *stream = ep->hcpriv;
+
+ if (!list_empty(&stream->td_list))
+ goto idle_timeout;
+
+ /* BUG_ON(!list_empty(&stream->free_list)); */
+ kfree(stream);
+ goto done;
}
- if (ehci->rh_state != EHCI_RH_RUNNING)
+ if (ehci->rh_state < EHCI_RH_RUNNING)
qh->qh_state = QH_STATE_IDLE;
switch (qh->qh_state) {
case QH_STATE_LINKED:
* may already be unlinked.
*/
if (tmp)
- unlink_async(ehci, qh);
+ start_unlink_async(ehci, qh);
/* FALL THROUGH */
case QH_STATE_UNLINK: /* wait for hw to finish? */
case QH_STATE_UNLINK_WAIT:
if (qh->clearing_tt)
goto idle_timeout;
if (list_empty (&qh->qtd_list)) {
- qh_put (qh);
+ qh_destroy(ehci, qh);
break;
}
/* else FALL THROUGH */
list_empty (&qh->qtd_list) ? "" : "(has tds)");
break;
}
+ done:
ep->hcpriv = NULL;
-done:
spin_unlock_irqrestore (&ehci->lock, flags);
}
* re-linking will call qh_refresh().
*/
if (eptype == USB_ENDPOINT_XFER_BULK)
- unlink_async(ehci, qh);
+ start_unlink_async(ehci, qh);
else
- intr_deschedule(ehci, qh);
+ start_unlink_intr(ehci, qh);
}
}
spin_unlock_irqrestore(&ehci->lock, flags);
}
/*-------------------------------------------------------------------------*/
+
+#ifdef CONFIG_PM
+
+/* suspend/resume, section 4.3 */
+
+/* These routines handle the generic parts of controller suspend/resume */
+
+static int __maybe_unused ehci_suspend(struct usb_hcd *hcd, bool do_wakeup)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+ if (time_before(jiffies, ehci->next_statechange))
+ msleep(10);
+
+ /*
+ * Root hub was already suspended. Disable IRQ emission and
+ * mark HW unaccessible. The PM and USB cores make sure that
+ * the root hub is either suspended or stopped.
+ */
+ ehci_prepare_ports_for_controller_suspend(ehci, do_wakeup);
+
+ spin_lock_irq(&ehci->lock);
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
+ (void) ehci_readl(ehci, &ehci->regs->intr_enable);
+
+ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+ spin_unlock_irq(&ehci->lock);
+
+ return 0;
+}
+
+/* Returns 0 if power was preserved, 1 if power was lost */
+static int __maybe_unused ehci_resume(struct usb_hcd *hcd, bool hibernated)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+ if (time_before(jiffies, ehci->next_statechange))
+ msleep(100);
+
+ /* Mark hardware accessible again as we are back to full power by now */
+ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ if (ehci->shutdown)
+ return 0; /* Controller is dead */
+
+ /*
+ * If CF is still set and we aren't resuming from hibernation
+ * then we maintained suspend power.
+ * Just undo the effect of ehci_suspend().
+ */
+ if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF &&
+ !hibernated) {
+ int mask = INTR_MASK;
+
+ ehci_prepare_ports_for_controller_resume(ehci);
+
+ spin_lock_irq(&ehci->lock);
+ if (ehci->shutdown)
+ goto skip;
+
+ if (!hcd->self.root_hub->do_remote_wakeup)
+ mask &= ~STS_PCD;
+ ehci_writel(ehci, mask, &ehci->regs->intr_enable);
+ ehci_readl(ehci, &ehci->regs->intr_enable);
+ skip:
+ spin_unlock_irq(&ehci->lock);
+ return 0;
+ }
+
+ /*
+ * Else reset, to cope with power loss or resume from hibernation
+ * having let the firmware kick in during reboot.
+ */
+ usb_root_hub_lost_power(hcd->self.root_hub);
+ (void) ehci_halt(ehci);
+ (void) ehci_reset(ehci);
+
+ spin_lock_irq(&ehci->lock);
+ if (ehci->shutdown)
+ goto skip;
+
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
+ ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
+ ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
+
+ ehci->rh_state = EHCI_RH_SUSPENDED;
+ spin_unlock_irq(&ehci->lock);
+
+ /* here we "know" root ports should always stay powered */
+ ehci_port_power(ehci, 1);
+
+ return 1;
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
/*
* The EHCI in ChipIdea HDRC cannot be a separate module or device,
* because its registers (and irq) are shared between host/gadget/otg
/* Give the connections some time to appear */
msleep(20);
+ spin_lock_irq(&ehci->lock);
port = HCS_N_PORTS(ehci->hcs_params);
while (port--) {
if (test_bit(port, &ehci->owned_ports)) {
clear_bit(port, &ehci->owned_ports);
else if (test_bit(port, &ehci->companion_ports))
ehci_writel(ehci, status & ~PORT_PE, reg);
- else
+ else {
+ spin_unlock_irq(&ehci->lock);
ehci_hub_control(hcd, SetPortFeature,
USB_PORT_FEAT_RESET, port + 1,
NULL, 0);
+ spin_lock_irq(&ehci->lock);
+ }
}
}
+ spin_unlock_irq(&ehci->lock);
if (!ehci->owned_ports)
return;
msleep(90); /* Wait for resets to complete */
+ spin_lock_irq(&ehci->lock);
port = HCS_N_PORTS(ehci->hcs_params);
while (port--) {
if (test_bit(port, &ehci->owned_ports)) {
+ spin_unlock_irq(&ehci->lock);
ehci_hub_control(hcd, GetPortStatus,
0, port + 1,
(char *) &buf, sizeof(buf));
+ spin_lock_irq(&ehci->lock);
/* The companion should now own the port,
* but if something went wrong the port must not
}
ehci->owned_ports = 0;
+ spin_unlock_irq(&ehci->lock);
}
-static int __maybe_unused ehci_port_change(struct ehci_hcd *ehci)
+static int ehci_port_change(struct ehci_hcd *ehci)
{
int i = HCS_N_PORTS(ehci->hcs_params);
return 0;
}
-static __maybe_unused void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
+static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
bool suspending, bool do_wakeup)
{
int port;
u32 temp;
- unsigned long flags;
/* If remote wakeup is enabled for the root hub but disabled
* for the controller, we must adjust all the port wakeup flags
if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup)
return;
- spin_lock_irqsave(&ehci->lock, flags);
+ spin_lock_irq(&ehci->lock);
/* clear phy low-power mode before changing wakeup flags */
if (ehci->has_hostpc) {
port = HCS_N_PORTS(ehci->hcs_params);
while (port--) {
- u32 __iomem *hostpc_reg;
+ u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
- hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs
- + HOSTPC0 + 4 * port);
temp = ehci_readl(ehci, hostpc_reg);
ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg);
}
- spin_unlock_irqrestore(&ehci->lock, flags);
+ spin_unlock_irq(&ehci->lock);
msleep(5);
- spin_lock_irqsave(&ehci->lock, flags);
+ spin_lock_irq(&ehci->lock);
}
port = HCS_N_PORTS(ehci->hcs_params);
if (ehci->has_hostpc) {
port = HCS_N_PORTS(ehci->hcs_params);
while (port--) {
- u32 __iomem *hostpc_reg;
+ u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
- hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs
- + HOSTPC0 + 4 * port);
temp = ehci_readl(ehci, hostpc_reg);
ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg);
}
if (!suspending && ehci_port_change(ehci))
usb_hcd_resume_root_hub(ehci_to_hcd(ehci));
- spin_unlock_irqrestore(&ehci->lock, flags);
+ spin_unlock_irq(&ehci->lock);
}
static int ehci_bus_suspend (struct usb_hcd *hcd)
if (time_before (jiffies, ehci->next_statechange))
msleep(5);
- del_timer_sync(&ehci->watchdog);
- del_timer_sync(&ehci->iaa_watchdog);
+
+ /* stop the schedules */
+ ehci_quiesce(ehci);
spin_lock_irq (&ehci->lock);
+ if (ehci->rh_state < EHCI_RH_RUNNING)
+ goto done;
/* Once the controller is stopped, port resumes that are already
* in progress won't complete. Hence if remote wakeup is enabled
}
}
- /* stop schedules, clean any completed work */
- if (ehci->rh_state == EHCI_RH_RUNNING)
- ehci_quiesce (ehci);
- ehci_work(ehci);
-
/* Unlike other USB host controller types, EHCI doesn't have
* any notion of "global" or bus-wide suspend. The driver has
* to manually suspend all the active unsuspended ports, and
port = HCS_N_PORTS(ehci->hcs_params);
while (port--) {
- u32 __iomem *hostpc_reg;
+ u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
u32 t3;
- hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs
- + HOSTPC0 + 4 * port);
t3 = ehci_readl(ehci, hostpc_reg);
ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg);
t3 = ehci_readl(ehci, hostpc_reg);
"succeeded" : "failed");
}
}
+ spin_unlock_irq(&ehci->lock);
/* Apparently some devices need a >= 1-uframe delay here */
if (ehci->bus_suspended)
/* turn off now-idle HC */
ehci_halt (ehci);
+
+ spin_lock_irq(&ehci->lock);
+ if (ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_POLL_DEAD))
+ ehci_handle_controller_death(ehci);
+ if (ehci->rh_state != EHCI_RH_RUNNING)
+ goto done;
ehci->rh_state = EHCI_RH_SUSPENDED;
- if (ehci->reclaim)
- end_unlink_async(ehci);
+ end_unlink_async(ehci);
+ unlink_empty_async(ehci);
+ ehci_handle_intr_unlinks(ehci);
+ end_free_itds(ehci);
/* allow remote wakeup */
mask = INTR_MASK;
ehci_writel(ehci, mask, &ehci->regs->intr_enable);
ehci_readl(ehci, &ehci->regs->intr_enable);
+ done:
ehci->next_statechange = jiffies + msecs_to_jiffies(10);
+ ehci->enabled_hrtimer_events = 0;
+ ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT;
spin_unlock_irq (&ehci->lock);
- /* ehci_work() may have re-enabled the watchdog timer, which we do not
- * want, and so we must delete any pending watchdog timer events.
- */
- del_timer_sync(&ehci->watchdog);
+ hrtimer_cancel(&ehci->hrtimer);
return 0;
}
if (time_before (jiffies, ehci->next_statechange))
msleep(5);
spin_lock_irq (&ehci->lock);
- if (!HCD_HW_ACCESSIBLE(hcd)) {
- spin_unlock_irq(&ehci->lock);
- return -ESHUTDOWN;
- }
+ if (!HCD_HW_ACCESSIBLE(hcd) || ehci->shutdown)
+ goto shutdown;
if (unlikely(ehci->debug)) {
if (!dbgp_reset_prep())
spin_unlock_irq(&ehci->lock);
msleep(8);
spin_lock_irq(&ehci->lock);
+ if (ehci->shutdown)
+ goto shutdown;
/* clear phy low-power mode before resume */
if (ehci->bus_suspended && ehci->has_hostpc) {
i = HCS_N_PORTS(ehci->hcs_params);
while (i--) {
if (test_bit(i, &ehci->bus_suspended)) {
- u32 __iomem *hostpc_reg;
+ u32 __iomem *hostpc_reg =
+ &ehci->regs->hostpc[i];
- hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs
- + HOSTPC0 + 4 * i);
temp = ehci_readl(ehci, hostpc_reg);
ehci_writel(ehci, temp & ~HOSTPC_PHCD,
hostpc_reg);
spin_unlock_irq(&ehci->lock);
msleep(5);
spin_lock_irq(&ehci->lock);
+ if (ehci->shutdown)
+ goto shutdown;
}
/* manually resume the ports we suspended during bus_suspend() */
spin_unlock_irq(&ehci->lock);
msleep(20);
spin_lock_irq(&ehci->lock);
+ if (ehci->shutdown)
+ goto shutdown;
}
i = HCS_N_PORTS (ehci->hcs_params);
ehci_vdbg (ehci, "resumed port %d\n", i + 1);
}
}
- (void) ehci_readl(ehci, &ehci->regs->command);
-
- /* maybe re-activate the schedule(s) */
- temp = 0;
- if (ehci->async->qh_next.qh)
- temp |= CMD_ASE;
- if (ehci->periodic_sched)
- temp |= CMD_PSE;
- if (temp) {
- ehci->command |= temp;
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- }
ehci->next_statechange = jiffies + msecs_to_jiffies(5);
+ spin_unlock_irq(&ehci->lock);
+
+ ehci_handover_companion_ports(ehci);
/* Now we can safely re-enable irqs */
+ spin_lock_irq(&ehci->lock);
+ if (ehci->shutdown)
+ goto shutdown;
ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
+ (void) ehci_readl(ehci, &ehci->regs->intr_enable);
+ spin_unlock_irq(&ehci->lock);
- spin_unlock_irq (&ehci->lock);
- ehci_handover_companion_ports(ehci);
return 0;
+
+ shutdown:
+ spin_unlock_irq(&ehci->lock);
+ return -ESHUTDOWN;
}
#else
int ports = HCS_N_PORTS (ehci->hcs_params);
u32 __iomem *status_reg = &ehci->regs->port_status[
(wIndex & 0xff) - 1];
- u32 __iomem *hostpc_reg = NULL;
+ u32 __iomem *hostpc_reg = &ehci->regs->hostpc[(wIndex & 0xff) - 1];
u32 temp, temp1, status;
unsigned long flags;
int retval = 0;
* power, "this is the one", etc. EHCI spec supports this.
*/
- if (ehci->has_hostpc)
- hostpc_reg = (u32 __iomem *)((u8 *)ehci->regs
- + HOSTPC0 + 4 * ((wIndex & 0xff) - 1));
spin_lock_irqsave (&ehci->lock, flags);
switch (typeReq) {
case ClearHubFeature:
#ifdef CONFIG_USB_OTG
if ((hcd->self.otg_port == (wIndex + 1))
&& hcd->self.b_hnp_enable) {
- otg_start_hnp(ehci->transceiver->otg);
+ otg_start_hnp(hcd->phy->otg);
break;
}
#endif
goto error;
/* clear phy low-power mode before resume */
- if (hostpc_reg) {
+ if (ehci->has_hostpc) {
temp1 = ehci_readl(ehci, hostpc_reg);
ehci_writel(ehci, temp1 & ~HOSTPC_PHCD,
hostpc_reg);
temp &= ~PORT_WKCONN_E;
temp |= PORT_WKDISC_E | PORT_WKOC_E;
ehci_writel(ehci, temp | PORT_SUSPEND, status_reg);
- if (hostpc_reg) {
+ if (ehci->has_hostpc) {
spin_unlock_irqrestore(&ehci->lock, flags);
msleep(5);/* 5ms for HCD enter low pwr mode */
spin_lock_irqsave(&ehci->lock, flags);
case USB_PORT_FEAT_TEST:
if (!selector || selector > 5)
goto error;
+ spin_unlock_irqrestore(&ehci->lock, flags);
ehci_quiesce(ehci);
+ spin_lock_irqsave(&ehci->lock, flags);
/* Put all enabled ports into suspend */
while (ports--) {
ehci_writel(ehci, temp | PORT_SUSPEND,
sreg);
}
+
+ spin_unlock_irqrestore(&ehci->lock, flags);
ehci_halt(ehci);
+ spin_lock_irqsave(&ehci->lock, flags);
+
temp = ehci_readl(ehci, status_reg);
temp |= selector << 16;
ehci_writel(ehci, temp, status_reg);
ehci->big_endian_mmio = 1;
ehci->caps = hcd->regs + 0x100;
- ehci->regs = hcd->regs + 0x100
- + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
hcd->has_tt = 1;
- ehci_reset(ehci);
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
}
-static void qh_destroy(struct ehci_qh *qh)
+static void qh_destroy(struct ehci_hcd *ehci, struct ehci_qh *qh)
{
- struct ehci_hcd *ehci = qh->ehci;
-
/* clean qtds first, and know this is not linked */
if (!list_empty (&qh->qtd_list) || qh->qh_next.ptr) {
ehci_dbg (ehci, "unused qh not empty!\n");
if (!qh->hw)
goto fail;
memset(qh->hw, 0, sizeof *qh->hw);
- qh->refcount = 1;
- qh->ehci = ehci;
qh->qh_dma = dma;
// INIT_LIST_HEAD (&qh->qh_list);
INIT_LIST_HEAD (&qh->qtd_list);
return NULL;
}
-/* to share a qh (cpu threads, or hc) */
-static inline struct ehci_qh *qh_get (struct ehci_qh *qh)
-{
- WARN_ON(!qh->refcount);
- qh->refcount++;
- return qh;
-}
-
-static inline void qh_put (struct ehci_qh *qh)
-{
- if (!--qh->refcount)
- qh_destroy(qh);
-}
-
/*-------------------------------------------------------------------------*/
/* The queue heads and transfer descriptors are managed from pools tied
static void ehci_mem_cleanup (struct ehci_hcd *ehci)
{
- free_cached_lists(ehci);
if (ehci->async)
- qh_put (ehci->async);
+ qh_destroy(ehci, ehci->async);
ehci->async = NULL;
if (ehci->dummy)
- qh_put(ehci->dummy);
+ qh_destroy(ehci, ehci->dummy);
ehci->dummy = NULL;
/* DMA consistent memory and pools */
* powering up VBUS, mapping of registers address space and power
* management.
*/
- phy = usb_get_transceiver();
- if (!phy) {
+ phy = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(phy)) {
dev_err(&pdev->dev, "unable to find transceiver\n");
ret = -ENODEV;
goto unmap;
return 0;
put_transceiver:
- usb_put_transceiver(phy);
+ usb_put_phy(phy);
unmap:
iounmap(hcd->regs);
put_hcd:
pm_runtime_set_suspended(&pdev->dev);
otg_set_host(phy->otg, NULL);
- usb_put_transceiver(phy);
+ usb_put_phy(phy);
usb_put_hcd(hcd);
static int ehci_msm_pm_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- bool wakeup = device_may_wakeup(dev);
+ bool do_wakeup = device_may_wakeup(dev);
dev_dbg(dev, "ehci-msm PM suspend\n");
- /*
- * EHCI helper function has also the same check before manipulating
- * port wakeup flags. We do check here the same condition before
- * calling the same helper function to avoid bringing hardware
- * from Low power mode when there is no need for adjusting port
- * wakeup flags.
- */
- if (hcd->self.root_hub->do_remote_wakeup && !wakeup) {
- pm_runtime_resume(dev);
- ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
- wakeup);
- }
-
- return 0;
+ return ehci_suspend(hcd, do_wakeup);
}
static int ehci_msm_pm_resume(struct device *dev)
struct usb_hcd *hcd = dev_get_drvdata(dev);
dev_dbg(dev, "ehci-msm PM resume\n");
- ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd));
+ ehci_resume(hcd, false);
return 0;
}
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/usb/otg.h>
#include <linux/platform_data/mv_usb.h>
static int mv_ehci_reset(struct usb_hcd *hcd)
{
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct device *dev = hcd->self.controller;
struct ehci_hcd_mv *ehci_mv = dev_get_drvdata(dev);
int retval;
return -ENODEV;
}
- /*
- * data structure init
- */
- retval = ehci_init(hcd);
- if (retval) {
- dev_err(dev, "ehci_init failed %d\n", retval);
- return retval;
- }
-
hcd->has_tt = 1;
- ehci->sbrn = 0x20;
- retval = ehci_reset(ehci);
- if (retval) {
- dev_err(dev, "ehci_reset failed %d\n", retval);
- return retval;
- }
+ retval = ehci_setup(hcd);
+ if (retval)
+ dev_err(dev, "ehci_setup failed %d\n", retval);
- return 0;
+ return retval;
}
static const struct hc_driver mv_ehci_hc_driver = {
ehci = hcd_to_ehci(hcd);
ehci->caps = (struct ehci_caps *) ehci_mv->cap_regs;
- ehci->regs = (struct ehci_regs *) ehci_mv->op_regs;
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
ehci_mv->mode = pdata->mode;
if (ehci_mv->mode == MV_USB_MODE_OTG) {
#ifdef CONFIG_USB_OTG_UTILS
- ehci_mv->otg = usb_get_transceiver();
- if (!ehci_mv->otg) {
+ ehci_mv->otg = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(ehci_mv->otg)) {
dev_err(&pdev->dev,
"unable to find transceiver\n");
retval = -ENODEV;
pdata->set_vbus(0);
#ifdef CONFIG_USB_OTG_UTILS
err_put_transceiver:
- if (ehci_mv->otg)
- usb_put_transceiver(ehci_mv->otg);
+ if (!IS_ERR_OR_NULL(ehci_mv->otg))
+ usb_put_phy(ehci_mv->otg);
#endif
err_disable_clk:
mv_ehci_disable(ehci_mv);
if (hcd->rh_registered)
usb_remove_hcd(hcd);
- if (ehci_mv->otg) {
+ if (!IS_ERR_OR_NULL(ehci_mv->otg)) {
otg_set_host(ehci_mv->otg->otg, NULL);
- usb_put_transceiver(ehci_mv->otg);
+ usb_put_phy(ehci_mv->otg);
}
if (ehci_mv->mode == MV_USB_MODE_HOST) {
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int retval;
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
hcd->has_tt = 1;
- retval = ehci_halt(ehci);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
- /* data structure init */
- retval = ehci_init(hcd);
- if (retval)
- return retval;
-
- ehci->sbrn = 0x20;
-
- ehci_reset(ehci);
-
ehci_port_power(ehci, 0);
return 0;
}
/*
* basic lifecycle operations
*/
- .reset = ehci_init,
+ .reset = ehci_setup,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
#endif
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
- ehci_reset(ehci);
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret) {
clk_disable(usbhost_p2_fck);
}
-static void omap_ehci_soft_phy_reset(struct platform_device *pdev, u8 port)
+static void omap_ehci_soft_phy_reset(struct usb_hcd *hcd, u8 port)
{
- struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
unsigned reg = 0;
cpu_relax();
if (time_after(jiffies, timeout)) {
- dev_dbg(&pdev->dev, "phy reset operation timed out\n");
+ dev_dbg(hcd->self.controller,
+ "phy reset operation timed out\n");
break;
}
}
}
+static int omap_ehci_init(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int rc;
+ struct ehci_hcd_omap_platform_data *pdata;
+
+ pdata = hcd->self.controller->platform_data;
+ if (pdata->phy_reset) {
+ if (gpio_is_valid(pdata->reset_gpio_port[0]))
+ gpio_request_one(pdata->reset_gpio_port[0],
+ GPIOF_OUT_INIT_LOW, "USB1 PHY reset");
+
+ if (gpio_is_valid(pdata->reset_gpio_port[1]))
+ gpio_request_one(pdata->reset_gpio_port[1],
+ GPIOF_OUT_INIT_LOW, "USB2 PHY reset");
+
+ /* Hold the PHY in RESET for enough time till DIR is high */
+ udelay(10);
+ }
+
+ /* Soft reset the PHY using PHY reset command over ULPI */
+ if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
+ omap_ehci_soft_phy_reset(hcd, 0);
+ if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
+ omap_ehci_soft_phy_reset(hcd, 1);
+
+ /* we know this is the memory we want, no need to ioremap again */
+ ehci->caps = hcd->regs;
+
+ rc = ehci_setup(hcd);
+
+ if (pdata->phy_reset) {
+ /* Hold the PHY in RESET for enough time till
+ * PHY is settled and ready
+ */
+ udelay(10);
+
+ if (gpio_is_valid(pdata->reset_gpio_port[0]))
+ gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
+
+ if (gpio_is_valid(pdata->reset_gpio_port[1]))
+ gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
+ }
+
+ /* root ports should always stay powered */
+ ehci_port_power(ehci, 1);
+
+ return rc;
+}
+
static int omap_ehci_hub_control(
struct usb_hcd *hcd,
u16 typeReq,
struct resource *res;
struct usb_hcd *hcd;
void __iomem *regs;
- struct ehci_hcd *omap_ehci;
int ret = -ENODEV;
int irq;
int i;
}
}
- /* Hold PHYs in reset while initializing EHCI controller */
- if (pdata->phy_reset) {
- if (gpio_is_valid(pdata->reset_gpio_port[0]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[0], 0);
-
- if (gpio_is_valid(pdata->reset_gpio_port[1]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[1], 0);
-
- /* Hold the PHY in RESET for enough time till DIR is high */
- udelay(10);
- }
-
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
ehci_write(regs, EHCI_INSNREG04,
EHCI_INSNREG04_DISABLE_UNSUSPEND);
- /* Soft reset the PHY using PHY reset command over ULPI */
- if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
- omap_ehci_soft_phy_reset(pdev, 0);
- if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
- omap_ehci_soft_phy_reset(pdev, 1);
-
- omap_ehci = hcd_to_ehci(hcd);
- omap_ehci->sbrn = 0x20;
-
- /* we know this is the memory we want, no need to ioremap again */
- omap_ehci->caps = hcd->regs;
- omap_ehci->regs = hcd->regs
- + HC_LENGTH(ehci, readl(&omap_ehci->caps->hc_capbase));
-
- dbg_hcs_params(omap_ehci, "reset");
- dbg_hcc_params(omap_ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params);
-
- ehci_reset(omap_ehci);
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret) {
dev_err(dev, "failed to add hcd with err %d\n", ret);
- goto err_add_hcd;
+ goto err_pm_runtime;
}
- if (pdata->phy_reset) {
- /* Hold the PHY in RESET for enough time till
- * PHY is settled and ready
- */
- udelay(10);
-
- if (gpio_is_valid(pdata->reset_gpio_port[0]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
-
- if (gpio_is_valid(pdata->reset_gpio_port[1]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
- }
-
- /* root ports should always stay powered */
- ehci_port_power(omap_ehci, 1);
-
/* get clocks */
utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
if (IS_ERR(utmi_p1_fck)) {
clk_put(utmi_p1_fck);
err_add_hcd:
+ usb_remove_hcd(hcd);
+
+err_pm_runtime:
disable_put_regulator(pdata);
pm_runtime_put_sync(dev);
+ usb_put_hcd(hcd);
err_io:
iounmap(regs);
/*
* basic lifecycle operations
*/
- .reset = ehci_init,
+ .reset = omap_ehci_init,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int retval;
- hcd->has_tt = 1;
-
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
-
- /*
- * data structure init
- */
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
- ehci_reset(ehci);
-
ehci_port_power(ehci, 0);
return retval;
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs + 0x100;
- ehci->regs = hcd->regs + 0x100 +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
hcd->has_tt = 1;
- ehci->sbrn = 0x20;
/*
* (Re-)program MBUS remapping windows if we are asked to.
u32 temp;
int retval;
+ ehci->caps = hcd->regs;
+
+ /*
+ * ehci_init() causes memory for DMA transfers to be
+ * allocated. Thus, any vendor-specific workarounds based on
+ * limiting the type of memory used for DMA transfers must
+ * happen before ehci_setup() is called.
+ *
+ * Most other workarounds can be done either before or after
+ * init and reset; they are located here too.
+ */
switch (pdev->vendor) {
case PCI_VENDOR_ID_TOSHIBA_2:
/* celleb's companion chip */
#endif
}
break;
- }
-
- ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
-
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* ehci_init() causes memory for DMA transfers to be
- * allocated. Thus, any vendor-specific workarounds based on
- * limiting the type of memory used for DMA transfers must
- * happen before ehci_init() is called. */
- switch (pdev->vendor) {
case PCI_VENDOR_ID_NVIDIA:
/* NVidia reports that certain chips don't handle
* QH, ITD, or SITD addresses above 2GB. (But TD,
ehci_warn(ehci, "can't enable NVidia "
"workaround for >2GB RAM\n");
break;
- }
- break;
- }
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
- if ((pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x7808) ||
- (pdev->vendor == PCI_VENDOR_ID_ATI && pdev->device == 0x4396)) {
- /* EHCI controller on AMD SB700/SB800/Hudson-2/3 platforms may
- * read/write memory space which does not belong to it when
- * there is NULL pointer with T-bit set to 1 in the frame list
- * table. To avoid the issue, the frame list link pointer
- * should always contain a valid pointer to a inactive qh.
+ /* Some NForce2 chips have problems with selective suspend;
+ * fixed in newer silicon.
*/
- ehci->use_dummy_qh = 1;
- ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI "
- "dummy qh workaround\n");
- }
-
- /* data structure init */
- retval = ehci_init(hcd);
- if (retval)
- return retval;
-
- switch (pdev->vendor) {
- case PCI_VENDOR_ID_NEC:
- ehci->need_io_watchdog = 0;
+ case 0x0068:
+ if (pdev->revision < 0xa4)
+ ehci->no_selective_suspend = 1;
+ break;
+ }
break;
case PCI_VENDOR_ID_INTEL:
- ehci->need_io_watchdog = 0;
ehci->fs_i_thresh = 1;
- if (pdev->device == 0x27cc) {
- ehci->broken_periodic = 1;
- ehci_info(ehci, "using broken periodic workaround\n");
- }
- if (pdev->device == 0x0806 || pdev->device == 0x0811
- || pdev->device == 0x0829) {
- ehci_info(ehci, "disable lpm for langwell/penwell\n");
- ehci->has_lpm = 0;
- }
- if (pdev->device == PCI_DEVICE_ID_INTEL_CE4100_USB) {
+ if (pdev->device == PCI_DEVICE_ID_INTEL_CE4100_USB)
hcd->has_tt = 1;
- tdi_reset(ehci);
- }
break;
case PCI_VENDOR_ID_TDI:
- if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) {
+ if (pdev->device == PCI_DEVICE_ID_TDI_EHCI)
hcd->has_tt = 1;
- tdi_reset(ehci);
- }
break;
case PCI_VENDOR_ID_AMD:
/* AMD PLL quirk */
retval = -EIO;
goto done;
}
- break;
- case PCI_VENDOR_ID_NVIDIA:
- switch (pdev->device) {
- /* Some NForce2 chips have problems with selective suspend;
- * fixed in newer silicon.
- */
- case 0x0068:
- if (pdev->revision < 0xa4)
- ehci->no_selective_suspend = 1;
- break;
- /* MCP89 chips on the MacBookAir3,1 give EPROTO when
- * fetching device descriptors unless LPM is disabled.
- * There are also intermittent problems enumerating
- * devices with PPCD enabled.
+ /*
+ * EHCI controller on AMD SB700/SB800/Hudson-2/3 platforms may
+ * read/write memory space which does not belong to it when
+ * there is NULL pointer with T-bit set to 1 in the frame list
+ * table. To avoid the issue, the frame list link pointer
+ * should always contain a valid pointer to a inactive qh.
*/
- case 0x0d9d:
- ehci_info(ehci, "disable lpm/ppcd for nvidia mcp89");
- ehci->has_lpm = 0;
- ehci->has_ppcd = 0;
- ehci->command &= ~CMD_PPCEE;
- break;
+ if (pdev->device == 0x7808) {
+ ehci->use_dummy_qh = 1;
+ ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround\n");
}
break;
case PCI_VENDOR_ID_VIA:
/* AMD PLL quirk */
if (usb_amd_find_chipset_info())
ehci->amd_pll_fix = 1;
+
+ /*
+ * EHCI controller on AMD SB700/SB800/Hudson-2/3 platforms may
+ * read/write memory space which does not belong to it when
+ * there is NULL pointer with T-bit set to 1 in the frame list
+ * table. To avoid the issue, the frame list link pointer
+ * should always contain a valid pointer to a inactive qh.
+ */
+ if (pdev->device == 0x4396) {
+ ehci->use_dummy_qh = 1;
+ ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround\n");
+ }
/* SB600 and old version of SB700 have a bug in EHCI controller,
* which causes usb devices lose response in some cases.
*/
break;
}
+ retval = ehci_setup(hcd);
+ if (retval)
+ return retval;
+
+ /* These workarounds need to be applied after ehci_setup() */
+ switch (pdev->vendor) {
+ case PCI_VENDOR_ID_NEC:
+ ehci->need_io_watchdog = 0;
+ break;
+ case PCI_VENDOR_ID_INTEL:
+ ehci->need_io_watchdog = 0;
+ if (pdev->device == 0x0806 || pdev->device == 0x0811
+ || pdev->device == 0x0829) {
+ ehci_info(ehci, "disable lpm for langwell/penwell\n");
+ ehci->has_lpm = 0;
+ }
+ break;
+ case PCI_VENDOR_ID_NVIDIA:
+ switch (pdev->device) {
+ /* MCP89 chips on the MacBookAir3,1 give EPROTO when
+ * fetching device descriptors unless LPM is disabled.
+ * There are also intermittent problems enumerating
+ * devices with PPCD enabled.
+ */
+ case 0x0d9d:
+ ehci_info(ehci, "disable lpm/ppcd for nvidia mcp89");
+ ehci->has_lpm = 0;
+ ehci->has_ppcd = 0;
+ ehci->command &= ~CMD_PPCEE;
+ break;
+ }
+ break;
+ }
+
/* optional debug port, normally in the first BAR */
temp = pci_find_capability(pdev, 0x0a);
if (temp) {
temp >>= 16;
if ((temp & (3 << 13)) == (1 << 13)) {
temp &= 0x1fff;
- ehci->debug = ehci_to_hcd(ehci)->regs + temp;
+ ehci->debug = hcd->regs + temp;
temp = ehci_readl(ehci, &ehci->debug->control);
ehci_info(ehci, "debug port %d%s\n",
HCS_DEBUG_PORT(ehci->hcs_params),
}
}
- ehci_reset(ehci);
-
/* at least the Genesys GL880S needs fixup here */
temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params);
temp &= 0x0f;
}
/* Serial Bus Release Number is at PCI 0x60 offset */
- pci_read_config_byte(pdev, 0x60, &ehci->sbrn);
if (pdev->vendor == PCI_VENDOR_ID_STMICRO
&& pdev->device == PCI_DEVICE_ID_STMICRO_USB_HOST)
- ehci->sbrn = 0x20; /* ConneXT has no sbrn register */
+ ; /* ConneXT has no sbrn register */
+ else
+ pci_read_config_byte(pdev, 0x60, &ehci->sbrn);
/* Keep this around for a while just in case some EHCI
* implementation uses legacy PCI PM support. This test
static int ehci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- unsigned long flags;
- int rc = 0;
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(10);
-
- /* Root hub was already suspended. Disable irq emission and
- * mark HW unaccessible. The PM and USB cores make sure that
- * the root hub is either suspended or stopped.
- */
- ehci_prepare_ports_for_controller_suspend(ehci, do_wakeup);
- spin_lock_irqsave (&ehci->lock, flags);
- ehci_writel(ehci, 0, &ehci->regs->intr_enable);
- (void)ehci_readl(ehci, &ehci->regs->intr_enable);
-
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
- spin_unlock_irqrestore (&ehci->lock, flags);
-
- // could save FLADJ in case of Vaux power loss
- // ... we'd only use it to handle clock skew
-
- return rc;
+ return ehci_suspend(hcd, do_wakeup);
}
static bool usb_is_intel_switchable_ehci(struct pci_dev *pdev)
if (usb_is_intel_switchable_ehci(pdev))
ehci_enable_xhci_companion();
- // maybe restore FLADJ
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(100);
-
- /* Mark hardware accessible again as we are out of D3 state by now */
- set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
- /* If CF is still set and we aren't resuming from hibernation
- * then we maintained PCI Vaux power.
- * Just undo the effect of ehci_pci_suspend().
- */
- if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF &&
- !hibernated) {
- int mask = INTR_MASK;
-
- ehci_prepare_ports_for_controller_resume(ehci);
- if (!hcd->self.root_hub->do_remote_wakeup)
- mask &= ~STS_PCD;
- ehci_writel(ehci, mask, &ehci->regs->intr_enable);
- ehci_readl(ehci, &ehci->regs->intr_enable);
- return 0;
- }
-
- usb_root_hub_lost_power(hcd->self.root_hub);
-
- /* Else reset, to cope with power loss or flush-to-storage
- * style "resume" having let BIOS kick in during reboot.
- */
- (void) ehci_halt(ehci);
- (void) ehci_reset(ehci);
- (void) ehci_pci_reinit(ehci, pdev);
-
- /* emptying the schedule aborts any urbs */
- spin_lock_irq(&ehci->lock);
- if (ehci->reclaim)
- end_unlink_async(ehci);
- ehci_work(ehci);
- spin_unlock_irq(&ehci->lock);
-
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
- ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
-
- /* here we "know" root ports should always stay powered */
- ehci_port_power(ehci, 1);
-
- ehci->rh_state = EHCI_RH_SUSPENDED;
+ if (ehci_resume(hcd, hibernated) != 0)
+ (void) ehci_pci_reinit(ehci, pdev);
return 0;
}
#endif
static int ehci_platform_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- bool wakeup = device_may_wakeup(dev);
+ bool do_wakeup = device_may_wakeup(dev);
- ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), wakeup);
- return 0;
+ return ehci_suspend(hcd, do_wakeup);
}
static int ehci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd));
+ ehci_resume(hcd, false);
return 0;
}
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int retval;
+
ehci->big_endian_mmio = 1;
ehci->big_endian_desc = 1;
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
hcd->has_tt = 1;
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
-
- ehci_reset(ehci);
-
- /* data structure init */
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
#include <linux/of.h>
#include <linux/of_platform.h>
-/* called during probe() after chip reset completes */
-static int ehci_ppc_of_setup(struct usb_hcd *hcd)
-{
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- int retval;
-
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
-
- retval = ehci_init(hcd);
- if (retval)
- return retval;
-
- ehci->sbrn = 0x20;
- return ehci_reset(ehci);
-}
-
static const struct hc_driver ehci_ppc_of_hc_driver = {
.description = hcd_name,
/*
* basic lifecycle operations
*/
- .reset = ehci_ppc_of_setup,
+ .reset = ehci_setup,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
ehci->big_endian_desc = 1;
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
if (of_device_is_compatible(dn, "ibm,usb-ehci-440epx")) {
rv = ppc44x_enable_bmt(dn);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
ehci->big_endian_mmio = 1;
-
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci,
- &ehci->caps->hc_capbase));
-
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
- result = ehci_halt(ehci);
+ result = ehci_setup(hcd);
if (result)
return result;
- result = ehci_init(hcd);
-
- if (result)
- return result;
-
- ehci_reset(ehci);
-
ps3_ehci_setup_insnreg(ehci);
return result;
* and set the pseudo-toggle in udev. Only usb_clear_halt() will
* ever clear it.
*/
- if (!(hw->hw_info1 & cpu_to_hc32(ehci, 1 << 14))) {
+ if (!(hw->hw_info1 & cpu_to_hc32(ehci, QH_TOGGLE_CTL))) {
unsigned is_out, epnum;
is_out = qh->is_out;
/* ... update hc-wide periodic stats (for usbfs) */
ehci_to_hcd(ehci)->self.bandwidth_int_reqs--;
}
- qh_put (qh);
}
if (unlikely(urb->unlinked)) {
spin_lock (&ehci->lock);
}
-static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh);
-static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh);
-
static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh);
/*
*
* It's a bug for qh->qh_state to be anything other than
* QH_STATE_IDLE, unless our caller is scan_async() or
- * scan_periodic().
+ * scan_intr().
*/
state = qh->qh_state;
qh->qh_state = QH_STATE_COMPLETING;
/* stop scanning when we reach qtds the hc is using */
} else if (likely (!stopped
- && ehci->rh_state == EHCI_RH_RUNNING)) {
+ && ehci->rh_state >= EHCI_RH_RUNNING)) {
break;
/* scan the whole queue for unlinks whenever it stops */
stopped = 1;
/* cancel everything if we halt, suspend, etc */
- if (ehci->rh_state != EHCI_RH_RUNNING)
+ if (ehci->rh_state < EHCI_RH_RUNNING)
last_status = -ESHUTDOWN;
/* this qtd is active; skip it unless a previous qtd
is_input, 0,
hb_mult(maxp) * max_packet(maxp)));
qh->start = NO_FRAME;
- qh->stamp = ehci->periodic_stamp;
if (urb->dev->speed == USB_SPEED_HIGH) {
qh->c_usecs = 0;
/* using TT? */
switch (urb->dev->speed) {
case USB_SPEED_LOW:
- info1 |= (1 << 12); /* EPS "low" */
+ info1 |= QH_LOW_SPEED;
/* FALL THROUGH */
case USB_SPEED_FULL:
if (type != PIPE_INTERRUPT)
info1 |= (EHCI_TUNE_RL_TT << 28);
if (type == PIPE_CONTROL) {
- info1 |= (1 << 27); /* for TT */
- info1 |= 1 << 14; /* toggle from qtd */
+ info1 |= QH_CONTROL_EP; /* for TT */
+ info1 |= QH_TOGGLE_CTL; /* toggle from qtd */
}
info1 |= maxp << 16;
break;
case USB_SPEED_HIGH: /* no TT involved */
- info1 |= (2 << 12); /* EPS "high" */
+ info1 |= QH_HIGH_SPEED;
if (type == PIPE_CONTROL) {
info1 |= (EHCI_TUNE_RL_HS << 28);
info1 |= 64 << 16; /* usb2 fixed maxpacket */
- info1 |= 1 << 14; /* toggle from qtd */
+ info1 |= QH_TOGGLE_CTL; /* toggle from qtd */
info2 |= (EHCI_TUNE_MULT_HS << 30);
} else if (type == PIPE_BULK) {
info1 |= (EHCI_TUNE_RL_HS << 28);
ehci_dbg(ehci, "bogus dev %p speed %d\n", urb->dev,
urb->dev->speed);
done:
- qh_put (qh);
+ qh_destroy(ehci, qh);
return NULL;
}
/*-------------------------------------------------------------------------*/
+static void enable_async(struct ehci_hcd *ehci)
+{
+ if (ehci->async_count++)
+ return;
+
+ /* Stop waiting to turn off the async schedule */
+ ehci->enabled_hrtimer_events &= ~BIT(EHCI_HRTIMER_DISABLE_ASYNC);
+
+ /* Don't start the schedule until ASS is 0 */
+ ehci_poll_ASS(ehci);
+ turn_on_io_watchdog(ehci);
+}
+
+static void disable_async(struct ehci_hcd *ehci)
+{
+ if (--ehci->async_count)
+ return;
+
+ /* The async schedule and async_unlink list are supposed to be empty */
+ WARN_ON(ehci->async->qh_next.qh || ehci->async_unlink);
+
+ /* Don't turn off the schedule until ASS is 1 */
+ ehci_poll_ASS(ehci);
+}
+
/* move qh (and its qtds) onto async queue; maybe enable queue. */
static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
WARN_ON(qh->qh_state != QH_STATE_IDLE);
- /* (re)start the async schedule? */
- head = ehci->async;
- timer_action_done (ehci, TIMER_ASYNC_OFF);
- if (!head->qh_next.qh) {
- if (!(ehci->command & CMD_ASE)) {
- /* in case a clear of CMD_ASE didn't take yet */
- (void)handshake(ehci, &ehci->regs->status,
- STS_ASS, 0, 150);
- ehci->command |= CMD_ASE;
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- /* posted write need not be known to HC yet ... */
- }
- }
-
/* clear halt and/or toggle; and maybe recover from silicon quirk */
qh_refresh(ehci, qh);
/* splice right after start */
+ head = ehci->async;
qh->qh_next = head->qh_next;
qh->hw->hw_next = head->hw->hw_next;
wmb ();
head->qh_next.qh = qh;
head->hw->hw_next = dma;
- qh_get(qh);
qh->xacterrs = 0;
qh->qh_state = QH_STATE_LINKED;
/* qtd completions reported later by interrupt */
+
+ enable_async(ehci);
}
/*-------------------------------------------------------------------------*/
wmb ();
dummy->hw_token = token;
- urb->hcpriv = qh_get (qh);
+ urb->hcpriv = qh;
}
}
return qh;
/*-------------------------------------------------------------------------*/
-/* the async qh for the qtds being reclaimed are now unlinked from the HC */
-
-static void end_unlink_async (struct ehci_hcd *ehci)
+static void single_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh)
{
- struct ehci_qh *qh = ehci->reclaim;
- struct ehci_qh *next;
+ struct ehci_qh *prev;
- iaa_watchdog_done(ehci);
+ /* Add to the end of the list of QHs waiting for the next IAAD */
+ qh->qh_state = QH_STATE_UNLINK;
+ if (ehci->async_unlink)
+ ehci->async_unlink_last->unlink_next = qh;
+ else
+ ehci->async_unlink = qh;
+ ehci->async_unlink_last = qh;
- // qh->hw_next = cpu_to_hc32(qh->qh_dma);
- qh->qh_state = QH_STATE_IDLE;
- qh->qh_next.qh = NULL;
- qh_put (qh); // refcount from reclaim
+ /* Unlink it from the schedule */
+ prev = ehci->async;
+ while (prev->qh_next.qh != qh)
+ prev = prev->qh_next.qh;
- /* other unlink(s) may be pending (in QH_STATE_UNLINK_WAIT) */
- next = qh->reclaim;
- ehci->reclaim = next;
- qh->reclaim = NULL;
+ prev->hw->hw_next = qh->hw->hw_next;
+ prev->qh_next = qh->qh_next;
+ if (ehci->qh_scan_next == qh)
+ ehci->qh_scan_next = qh->qh_next.qh;
+}
- qh_completions (ehci, qh);
+static void start_iaa_cycle(struct ehci_hcd *ehci, bool nested)
+{
+ /*
+ * Do nothing if an IAA cycle is already running or
+ * if one will be started shortly.
+ */
+ if (ehci->async_iaa || ehci->async_unlinking)
+ return;
- if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) {
- qh_link_async (ehci, qh);
- } else {
- /* it's not free to turn the async schedule on/off; leave it
- * active but idle for a while once it empties.
- */
- if (ehci->rh_state == EHCI_RH_RUNNING
- && ehci->async->qh_next.qh == NULL)
- timer_action (ehci, TIMER_ASYNC_OFF);
- }
- qh_put(qh); /* refcount from async list */
+ /* Do all the waiting QHs at once */
+ ehci->async_iaa = ehci->async_unlink;
+ ehci->async_unlink = NULL;
- if (next) {
- ehci->reclaim = NULL;
- start_unlink_async (ehci, next);
+ /* If the controller isn't running, we don't have to wait for it */
+ if (unlikely(ehci->rh_state < EHCI_RH_RUNNING)) {
+ if (!nested) /* Avoid recursion */
+ end_unlink_async(ehci);
+
+ /* Otherwise start a new IAA cycle */
+ } else if (likely(ehci->rh_state == EHCI_RH_RUNNING)) {
+ /* Make sure the unlinks are all visible to the hardware */
+ wmb();
+
+ ehci_writel(ehci, ehci->command | CMD_IAAD,
+ &ehci->regs->command);
+ ehci_readl(ehci, &ehci->regs->command);
+ ehci_enable_event(ehci, EHCI_HRTIMER_IAA_WATCHDOG, true);
}
+}
+
+/* the async qh for the qtds being unlinked are now gone from the HC */
+
+static void end_unlink_async(struct ehci_hcd *ehci)
+{
+ struct ehci_qh *qh;
if (ehci->has_synopsys_hc_bug)
ehci_writel(ehci, (u32) ehci->async->qh_dma,
&ehci->regs->async_next);
-}
-
-/* makes sure the async qh will become idle */
-/* caller must own ehci->lock */
-static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
-{
- struct ehci_qh *prev;
+ /* Process the idle QHs */
+ restart:
+ ehci->async_unlinking = true;
+ while (ehci->async_iaa) {
+ qh = ehci->async_iaa;
+ ehci->async_iaa = qh->unlink_next;
+ qh->unlink_next = NULL;
+
+ qh->qh_state = QH_STATE_IDLE;
+ qh->qh_next.qh = NULL;
+
+ qh_completions(ehci, qh);
+ if (!list_empty(&qh->qtd_list) &&
+ ehci->rh_state == EHCI_RH_RUNNING)
+ qh_link_async(ehci, qh);
+ disable_async(ehci);
+ }
+ ehci->async_unlinking = false;
-#ifdef DEBUG
- assert_spin_locked(&ehci->lock);
- if (ehci->reclaim
- || (qh->qh_state != QH_STATE_LINKED
- && qh->qh_state != QH_STATE_UNLINK_WAIT)
- )
- BUG ();
-#endif
+ /* Start a new IAA cycle if any QHs are waiting for it */
+ if (ehci->async_unlink) {
+ start_iaa_cycle(ehci, true);
+ if (unlikely(ehci->rh_state < EHCI_RH_RUNNING))
+ goto restart;
+ }
+}
- /* stop async schedule right now? */
- if (unlikely (qh == ehci->async)) {
- /* can't get here without STS_ASS set */
- if (ehci->rh_state != EHCI_RH_HALTED
- && !ehci->reclaim) {
- /* ... and CMD_IAAD clear */
- ehci->command &= ~CMD_ASE;
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- wmb ();
- // handshake later, if we need to
- timer_action_done (ehci, TIMER_ASYNC_OFF);
+static void unlink_empty_async(struct ehci_hcd *ehci)
+{
+ struct ehci_qh *qh, *next;
+ bool stopped = (ehci->rh_state < EHCI_RH_RUNNING);
+ bool check_unlinks_later = false;
+
+ /* Unlink all the async QHs that have been empty for a timer cycle */
+ next = ehci->async->qh_next.qh;
+ while (next) {
+ qh = next;
+ next = qh->qh_next.qh;
+
+ if (list_empty(&qh->qtd_list) &&
+ qh->qh_state == QH_STATE_LINKED) {
+ if (!stopped && qh->unlink_cycle ==
+ ehci->async_unlink_cycle)
+ check_unlinks_later = true;
+ else
+ single_unlink_async(ehci, qh);
}
- return;
}
- qh->qh_state = QH_STATE_UNLINK;
- ehci->reclaim = qh = qh_get (qh);
+ /* Start a new IAA cycle if any QHs are waiting for it */
+ if (ehci->async_unlink)
+ start_iaa_cycle(ehci, false);
- prev = ehci->async;
- while (prev->qh_next.qh != qh)
- prev = prev->qh_next.qh;
+ /* QHs that haven't been empty for long enough will be handled later */
+ if (check_unlinks_later) {
+ ehci_enable_event(ehci, EHCI_HRTIMER_ASYNC_UNLINKS, true);
+ ++ehci->async_unlink_cycle;
+ }
+}
- prev->hw->hw_next = qh->hw->hw_next;
- prev->qh_next = qh->qh_next;
- if (ehci->qh_scan_next == qh)
- ehci->qh_scan_next = qh->qh_next.qh;
- wmb ();
+/* makes sure the async qh will become idle */
+/* caller must own ehci->lock */
- /* If the controller isn't running, we don't have to wait for it */
- if (unlikely(ehci->rh_state != EHCI_RH_RUNNING)) {
- /* if (unlikely (qh->reclaim != 0))
- * this will recurse, probably not much
- */
- end_unlink_async (ehci);
+static void start_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh)
+{
+ /*
+ * If the QH isn't linked then there's nothing we can do
+ * unless we were called during a giveback, in which case
+ * qh_completions() has to deal with it.
+ */
+ if (qh->qh_state != QH_STATE_LINKED) {
+ if (qh->qh_state == QH_STATE_COMPLETING)
+ qh->needs_rescan = 1;
return;
}
- ehci_writel(ehci, ehci->command | CMD_IAAD, &ehci->regs->command);
- (void)ehci_readl(ehci, &ehci->regs->command);
- iaa_watchdog_start(ehci);
+ single_unlink_async(ehci, qh);
+ start_iaa_cycle(ehci, false);
}
/*-------------------------------------------------------------------------*/
static void scan_async (struct ehci_hcd *ehci)
{
- bool stopped;
struct ehci_qh *qh;
- enum ehci_timer_action action = TIMER_IO_WATCHDOG;
-
- timer_action_done (ehci, TIMER_ASYNC_SHRINK);
- stopped = (ehci->rh_state != EHCI_RH_RUNNING);
+ bool check_unlinks_later = false;
ehci->qh_scan_next = ehci->async->qh_next.qh;
while (ehci->qh_scan_next) {
* drops the lock. That's why ehci->qh_scan_next
* always holds the next qh to scan; if the next qh
* gets unlinked then ehci->qh_scan_next is adjusted
- * in start_unlink_async().
+ * in single_unlink_async().
*/
- qh = qh_get(qh);
temp = qh_completions(ehci, qh);
- if (qh->needs_rescan)
- unlink_async(ehci, qh);
- qh->unlink_time = jiffies + EHCI_SHRINK_JIFFIES;
- qh_put(qh);
- if (temp != 0)
+ if (qh->needs_rescan) {
+ start_unlink_async(ehci, qh);
+ } else if (list_empty(&qh->qtd_list)
+ && qh->qh_state == QH_STATE_LINKED) {
+ qh->unlink_cycle = ehci->async_unlink_cycle;
+ check_unlinks_later = true;
+ } else if (temp != 0)
goto rescan;
}
+ }
- /* unlink idle entries, reducing DMA usage as well
- * as HCD schedule-scanning costs. delay for any qh
- * we just scanned, there's a not-unusual case that it
- * doesn't stay idle for long.
- * (plus, avoids some kind of re-activation race.)
- */
- if (list_empty(&qh->qtd_list)
- && qh->qh_state == QH_STATE_LINKED) {
- if (!ehci->reclaim && (stopped ||
- time_after_eq(jiffies, qh->unlink_time)))
- start_unlink_async(ehci, qh);
- else
- action = TIMER_ASYNC_SHRINK;
- }
+ /*
+ * Unlink empty entries, reducing DMA usage as well
+ * as HCD schedule-scanning costs. Delay for any qh
+ * we just scanned, there's a not-unusual case that it
+ * doesn't stay idle for long.
+ */
+ if (check_unlinks_later && ehci->rh_state == EHCI_RH_RUNNING &&
+ !(ehci->enabled_hrtimer_events &
+ BIT(EHCI_HRTIMER_ASYNC_UNLINKS))) {
+ ehci_enable_event(ehci, EHCI_HRTIMER_ASYNC_UNLINKS, true);
+ ++ehci->async_unlink_cycle;
}
- if (action == TIMER_ASYNC_SHRINK)
- timer_action (ehci, TIMER_ASYNC_SHRINK);
}
*/
#include <linux/clk.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/of_gpio.h>
#include <plat/ehci.h>
#include <plat/usb-phy.h>
.irq = ehci_irq,
.flags = HCD_MEMORY | HCD_USB2,
- .reset = ehci_init,
+ .reset = ehci_setup,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};
+static void s5p_setup_vbus_gpio(struct platform_device *pdev)
+{
+ int err;
+ int gpio;
+
+ if (!pdev->dev.of_node)
+ return;
+
+ gpio = of_get_named_gpio(pdev->dev.of_node,
+ "samsung,vbus-gpio", 0);
+ if (!gpio_is_valid(gpio))
+ return;
+
+ err = gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH, "ehci_vbus_gpio");
+ if (err)
+ dev_err(&pdev->dev, "can't request ehci vbus gpio %d", gpio);
+}
+
+static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);
+
static int __devinit s5p_ehci_probe(struct platform_device *pdev)
{
struct s5p_ehci_platdata *pdata;
return -EINVAL;
}
- s5p_ehci = kzalloc(sizeof(struct s5p_ehci_hcd), GFP_KERNEL);
+ /*
+ * Right now device-tree probed devices don't get dma_mask set.
+ * Since shared usb code relies on it, set it here for now.
+ * Once we move to full device tree support this will vanish off.
+ */
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &ehci_s5p_dma_mask;
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+ s5p_setup_vbus_gpio(pdev);
+
+ s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd),
+ GFP_KERNEL);
if (!s5p_ehci)
return -ENOMEM;
dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
- err = -ENOMEM;
- goto fail_hcd;
+ return -ENOMEM;
}
s5p_ehci->hcd = hcd;
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
- hcd->regs = ioremap(res->start, resource_size(res));
+ hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
- goto fail;
+ goto fail_io;
}
if (pdata->phy_init)
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = readl(&ehci->caps->hcs_params);
-
- ehci_reset(ehci);
-
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
- goto fail;
+ goto fail_io;
}
platform_set_drvdata(pdev, s5p_ehci);
return 0;
-fail:
- iounmap(hcd->regs);
fail_io:
clk_disable(s5p_ehci->clk);
fail_clken:
clk_put(s5p_ehci->clk);
fail_clk:
usb_put_hcd(hcd);
-fail_hcd:
- kfree(s5p_ehci);
return err;
}
if (pdata && pdata->phy_exit)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
- iounmap(hcd->regs);
-
clk_disable(s5p_ehci->clk);
clk_put(s5p_ehci->clk);
usb_put_hcd(hcd);
- kfree(s5p_ehci);
return 0;
}
{
struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
struct usb_hcd *hcd = s5p_ehci->hcd;
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ bool do_wakeup = device_may_wakeup(dev);
struct platform_device *pdev = to_platform_device(dev);
struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
- unsigned long flags;
- int rc = 0;
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(20);
-
- /*
- * Root hub was already suspended. Disable irq emission and
- * mark HW unaccessible. The PM and USB cores make sure that
- * the root hub is either suspended or stopped.
- */
- ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev));
- spin_lock_irqsave(&ehci->lock, flags);
- ehci_writel(ehci, 0, &ehci->regs->intr_enable);
- (void)ehci_readl(ehci, &ehci->regs->intr_enable);
+ int rc;
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
- spin_unlock_irqrestore(&ehci->lock, flags);
+ rc = ehci_suspend(hcd, do_wakeup);
if (pdata && pdata->phy_exit)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
{
struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
struct usb_hcd *hcd = s5p_ehci->hcd;
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct platform_device *pdev = to_platform_device(dev);
struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
- if (time_before(jiffies, ehci->next_statechange))
- msleep(100);
-
- /* Mark hardware accessible again as we are out of D3 state by now */
- set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
- if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
- int mask = INTR_MASK;
-
- ehci_prepare_ports_for_controller_resume(ehci);
- if (!hcd->self.root_hub->do_remote_wakeup)
- mask &= ~STS_PCD;
- ehci_writel(ehci, mask, &ehci->regs->intr_enable);
- ehci_readl(ehci, &ehci->regs->intr_enable);
- return 0;
- }
-
- usb_root_hub_lost_power(hcd->self.root_hub);
-
- (void) ehci_halt(ehci);
- (void) ehci_reset(ehci);
-
- /* emptying the schedule aborts any urbs */
- spin_lock_irq(&ehci->lock);
- if (ehci->reclaim)
- end_unlink_async(ehci);
- ehci_work(ehci);
- spin_unlock_irq(&ehci->lock);
-
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
- ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
-
- /* here we "know" root ports should always stay powered */
- ehci_port_power(ehci, 1);
-
- ehci->rh_state = EHCI_RH_SUSPENDED;
-
+ ehci_resume(hcd, false);
return 0;
}
#else
.resume = s5p_ehci_resume,
};
+#ifdef CONFIG_OF
+static const struct of_device_id exynos_ehci_match[] = {
+ { .compatible = "samsung,exynos-ehci" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_ehci_match);
+#endif
+
static struct platform_driver s5p_ehci_driver = {
.probe = s5p_ehci_probe,
.remove = __devexit_p(s5p_ehci_remove),
.name = "s5p-ehci",
.owner = THIS_MODULE,
.pm = &s5p_ehci_pm_ops,
+ .of_match_table = of_match_ptr(exynos_ehci_match),
}
};
/*-------------------------------------------------------------------------*/
-static int enable_periodic (struct ehci_hcd *ehci)
+static void enable_periodic(struct ehci_hcd *ehci)
{
- int status;
-
- if (ehci->periodic_sched++)
- return 0;
-
- /* did clearing PSE did take effect yet?
- * takes effect only at frame boundaries...
- */
- status = handshake_on_error_set_halt(ehci, &ehci->regs->status,
- STS_PSS, 0, 9 * 125);
- if (status) {
- usb_hc_died(ehci_to_hcd(ehci));
- return status;
- }
+ if (ehci->periodic_count++)
+ return;
- ehci->command |= CMD_PSE;
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- /* posted write ... PSS happens later */
+ /* Stop waiting to turn off the periodic schedule */
+ ehci->enabled_hrtimer_events &= ~BIT(EHCI_HRTIMER_DISABLE_PERIODIC);
- /* make sure ehci_work scans these */
- ehci->next_uframe = ehci_read_frame_index(ehci)
- % (ehci->periodic_size << 3);
- if (unlikely(ehci->broken_periodic))
- ehci->last_periodic_enable = ktime_get_real();
- return 0;
+ /* Don't start the schedule until PSS is 0 */
+ ehci_poll_PSS(ehci);
+ turn_on_io_watchdog(ehci);
}
-static int disable_periodic (struct ehci_hcd *ehci)
+static void disable_periodic(struct ehci_hcd *ehci)
{
- int status;
-
- if (--ehci->periodic_sched)
- return 0;
-
- if (unlikely(ehci->broken_periodic)) {
- /* delay experimentally determined */
- ktime_t safe = ktime_add_us(ehci->last_periodic_enable, 1000);
- ktime_t now = ktime_get_real();
- s64 delay = ktime_us_delta(safe, now);
-
- if (unlikely(delay > 0))
- udelay(delay);
- }
-
- /* did setting PSE not take effect yet?
- * takes effect only at frame boundaries...
- */
- status = handshake_on_error_set_halt(ehci, &ehci->regs->status,
- STS_PSS, STS_PSS, 9 * 125);
- if (status) {
- usb_hc_died(ehci_to_hcd(ehci));
- return status;
- }
-
- ehci->command &= ~CMD_PSE;
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- /* posted write ... */
-
- free_cached_lists(ehci);
+ if (--ehci->periodic_count)
+ return;
- ehci->next_uframe = -1;
- return 0;
+ /* Don't turn off the schedule until PSS is 1 */
+ ehci_poll_PSS(ehci);
}
/*-------------------------------------------------------------------------*/
* this just links in a qh; caller guarantees uframe masks are set right.
* no FSTN support (yet; ehci 0.96+)
*/
-static int qh_link_periodic (struct ehci_hcd *ehci, struct ehci_qh *qh)
+static void qh_link_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh)
{
unsigned i;
unsigned period = qh->period;
}
qh->qh_state = QH_STATE_LINKED;
qh->xacterrs = 0;
- qh_get (qh);
/* update per-qh bandwidth for usbfs */
ehci_to_hcd(ehci)->self.bandwidth_allocated += qh->period
? ((qh->usecs + qh->c_usecs) / qh->period)
: (qh->usecs * 8);
+ list_add(&qh->intr_node, &ehci->intr_qh_list);
+
/* maybe enable periodic schedule processing */
- return enable_periodic(ehci);
+ ++ehci->intr_count;
+ enable_periodic(ehci);
}
-static int qh_unlink_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh)
+static void qh_unlink_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh)
{
unsigned i;
unsigned period;
- // FIXME:
- // IF this isn't high speed
- // and this qh is active in the current uframe
- // (and overlay token SplitXstate is false?)
- // THEN
- // qh->hw_info1 |= cpu_to_hc32(1 << 7 /* "ignore" */);
+ /*
+ * If qh is for a low/full-speed device, simply unlinking it
+ * could interfere with an ongoing split transaction. To unlink
+ * it safely would require setting the QH_INACTIVATE bit and
+ * waiting at least one frame, as described in EHCI 4.12.2.5.
+ *
+ * We won't bother with any of this. Instead, we assume that the
+ * only reason for unlinking an interrupt QH while the current URB
+ * is still active is to dequeue all the URBs (flush the whole
+ * endpoint queue).
+ *
+ * If rebalancing the periodic schedule is ever implemented, this
+ * approach will no longer be valid.
+ */
/* high bandwidth, or otherwise part of every microframe */
if ((period = qh->period) == 0)
/* qh->qh_next still "live" to HC */
qh->qh_state = QH_STATE_UNLINK;
qh->qh_next.ptr = NULL;
- qh_put (qh);
- /* maybe turn off periodic schedule */
- return disable_periodic(ehci);
+ if (ehci->qh_scan_next == qh)
+ ehci->qh_scan_next = list_entry(qh->intr_node.next,
+ struct ehci_qh, intr_node);
+ list_del(&qh->intr_node);
}
-static void intr_deschedule (struct ehci_hcd *ehci, struct ehci_qh *qh)
+static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh)
{
- unsigned wait;
- struct ehci_qh_hw *hw = qh->hw;
- int rc;
-
/* If the QH isn't linked then there's nothing we can do
* unless we were called during a giveback, in which case
* qh_completions() has to deal with it.
qh_unlink_periodic (ehci, qh);
- /* simple/paranoid: always delay, expecting the HC needs to read
- * qh->hw_next or finish a writeback after SPLIT/CSPLIT ... and
- * expect khubd to clean up after any CSPLITs we won't issue.
- * active high speed queues may need bigger delays...
+ /* Make sure the unlinks are visible before starting the timer */
+ wmb();
+
+ /*
+ * The EHCI spec doesn't say how long it takes the controller to
+ * stop accessing an unlinked interrupt QH. The timer delay is
+ * 9 uframes; presumably that will be long enough.
*/
- if (list_empty (&qh->qtd_list)
- || (cpu_to_hc32(ehci, QH_CMASK)
- & hw->hw_info2) != 0)
- wait = 2;
+ qh->unlink_cycle = ehci->intr_unlink_cycle;
+
+ /* New entries go at the end of the intr_unlink list */
+ if (ehci->intr_unlink)
+ ehci->intr_unlink_last->unlink_next = qh;
else
- wait = 55; /* worst case: 3 * 1024 */
+ ehci->intr_unlink = qh;
+ ehci->intr_unlink_last = qh;
+
+ if (ehci->intr_unlinking)
+ ; /* Avoid recursive calls */
+ else if (ehci->rh_state < EHCI_RH_RUNNING)
+ ehci_handle_intr_unlinks(ehci);
+ else if (ehci->intr_unlink == qh) {
+ ehci_enable_event(ehci, EHCI_HRTIMER_UNLINK_INTR, true);
+ ++ehci->intr_unlink_cycle;
+ }
+}
+
+static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh)
+{
+ struct ehci_qh_hw *hw = qh->hw;
+ int rc;
- udelay (wait);
qh->qh_state = QH_STATE_IDLE;
hw->hw_next = EHCI_LIST_END(ehci);
- wmb ();
qh_completions(ehci, qh);
/* reschedule QH iff another request is queued */
- if (!list_empty(&qh->qtd_list) &&
- ehci->rh_state == EHCI_RH_RUNNING) {
+ if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) {
rc = qh_schedule(ehci, qh);
/* An error here likely indicates handshake failure
ehci_err(ehci, "can't reschedule qh %p, err %d\n",
qh, rc);
}
+
+ /* maybe turn off periodic schedule */
+ --ehci->intr_count;
+ disable_periodic(ehci);
}
/*-------------------------------------------------------------------------*/
ehci_dbg (ehci, "reused qh %p schedule\n", qh);
/* stuff into the periodic schedule */
- status = qh_link_periodic (ehci, qh);
+ qh_link_periodic(ehci, qh);
done:
return status;
}
return status;
}
+static void scan_intr(struct ehci_hcd *ehci)
+{
+ struct ehci_qh *qh;
+
+ list_for_each_entry_safe(qh, ehci->qh_scan_next, &ehci->intr_qh_list,
+ intr_node) {
+ rescan:
+ /* clean any finished work for this qh */
+ if (!list_empty(&qh->qtd_list)) {
+ int temp;
+
+ /*
+ * Unlinks could happen here; completion reporting
+ * drops the lock. That's why ehci->qh_scan_next
+ * always holds the next qh to scan; if the next qh
+ * gets unlinked then ehci->qh_scan_next is adjusted
+ * in qh_unlink_periodic().
+ */
+ temp = qh_completions(ehci, qh);
+ if (unlikely(qh->needs_rescan ||
+ (list_empty(&qh->qtd_list) &&
+ qh->qh_state == QH_STATE_LINKED)))
+ start_unlink_intr(ehci, qh);
+ else if (temp != 0)
+ goto rescan;
+ }
+ }
+}
+
/*-------------------------------------------------------------------------*/
/* ehci_iso_stream ops work with both ITD and SITD */
INIT_LIST_HEAD(&stream->td_list);
INIT_LIST_HEAD(&stream->free_list);
stream->next_uframe = -1;
- stream->refcount = 1;
}
return stream;
}
stream->maxp = maxp;
}
-static void
-iso_stream_put(struct ehci_hcd *ehci, struct ehci_iso_stream *stream)
-{
- stream->refcount--;
-
- /* free whenever just a dev->ep reference remains.
- * not like a QH -- no persistent state (toggle, halt)
- */
- if (stream->refcount == 1) {
- // BUG_ON (!list_empty(&stream->td_list));
-
- while (!list_empty (&stream->free_list)) {
- struct list_head *entry;
-
- entry = stream->free_list.next;
- list_del (entry);
-
- /* knows about ITD vs SITD */
- if (stream->highspeed) {
- struct ehci_itd *itd;
-
- itd = list_entry (entry, struct ehci_itd,
- itd_list);
- dma_pool_free (ehci->itd_pool, itd,
- itd->itd_dma);
- } else {
- struct ehci_sitd *sitd;
-
- sitd = list_entry (entry, struct ehci_sitd,
- sitd_list);
- dma_pool_free (ehci->sitd_pool, sitd,
- sitd->sitd_dma);
- }
- }
-
- stream->bEndpointAddress &= 0x0f;
- if (stream->ep)
- stream->ep->hcpriv = NULL;
-
- kfree(stream);
- }
-}
-
-static inline struct ehci_iso_stream *
-iso_stream_get (struct ehci_iso_stream *stream)
-{
- if (likely (stream != NULL))
- stream->refcount++;
- return stream;
-}
-
static struct ehci_iso_stream *
iso_stream_find (struct ehci_hcd *ehci, struct urb *urb)
{
if (unlikely (stream == NULL)) {
stream = iso_stream_alloc(GFP_ATOMIC);
if (likely (stream != NULL)) {
- /* dev->ep owns the initial refcount */
ep->hcpriv = stream;
stream->ep = ep;
iso_stream_init(ehci, stream, urb->dev, urb->pipe,
stream = NULL;
}
- /* caller guarantees an eventual matching iso_stream_put */
- stream = iso_stream_get (stream);
-
spin_unlock_irqrestore (&ehci->lock, flags);
return stream;
}
spin_lock_irqsave (&ehci->lock, flags);
for (i = 0; i < num_itds; i++) {
- /* free_list.next might be cache-hot ... but maybe
- * the HC caches it too. avoid that issue for now.
+ /*
+ * Use iTDs from the free list, but not iTDs that may
+ * still be in use by the hardware.
*/
-
- /* prefer previously-allocated itds */
- if (likely (!list_empty(&stream->free_list))) {
- itd = list_entry (stream->free_list.prev,
+ if (likely(!list_empty(&stream->free_list))) {
+ itd = list_first_entry(&stream->free_list,
struct ehci_itd, itd_list);
+ if (itd->frame == ehci->now_frame)
+ goto alloc_itd;
list_del (&itd->itd_list);
itd_dma = itd->itd_dma;
} else {
+ alloc_itd:
spin_unlock_irqrestore (&ehci->lock, flags);
itd = dma_pool_alloc (ehci->itd_pool, mem_flags,
&itd_dma);
urb->start_frame = stream->next_uframe;
if (!stream->highspeed)
urb->start_frame >>= 3;
+
+ /* Make sure scan_isoc() sees these */
+ if (ehci->isoc_count == 0)
+ ehci->next_frame = now >> 3;
return 0;
fail:
}
/* fit urb's itds into the selected schedule slot; activate as needed */
-static int
-itd_link_urb (
+static void itd_link_urb(
struct ehci_hcd *ehci,
struct urb *urb,
unsigned mod,
itd = list_entry (iso_sched->td_list.next,
struct ehci_itd, itd_list);
list_move_tail (&itd->itd_list, &stream->td_list);
- itd->stream = iso_stream_get (stream);
+ itd->stream = stream;
itd->urb = urb;
itd_init (ehci, stream, itd);
}
iso_sched_free (stream, iso_sched);
urb->hcpriv = NULL;
- timer_action (ehci, TIMER_IO_WATCHDOG);
- return enable_periodic(ehci);
+ ++ehci->isoc_count;
+ enable_periodic(ehci);
}
#define ISO_ERRS (EHCI_ISOC_BUF_ERR | EHCI_ISOC_BABBLE | EHCI_ISOC_XACTERR)
* (b) only this endpoint's completions submit URBs. It seems some silicon
* corrupts things if you reuse completed descriptors very quickly...
*/
-static unsigned
-itd_complete (
- struct ehci_hcd *ehci,
- struct ehci_itd *itd
-) {
+static bool itd_complete(struct ehci_hcd *ehci, struct ehci_itd *itd)
+{
struct urb *urb = itd->urb;
struct usb_iso_packet_descriptor *desc;
u32 t;
int urb_index = -1;
struct ehci_iso_stream *stream = itd->stream;
struct usb_device *dev;
- unsigned retval = false;
+ bool retval = false;
/* for each uframe with a packet */
for (uframe = 0; uframe < 8; uframe++) {
ehci_urb_done(ehci, urb, 0);
retval = true;
urb = NULL;
- (void) disable_periodic(ehci);
- ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--;
+ --ehci->isoc_count;
+ disable_periodic(ehci);
+
+ ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--;
if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) {
if (ehci->amd_pll_fix == 1)
usb_amd_quirk_pll_enable();
dev->devpath, stream->bEndpointAddress & 0x0f,
(stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out");
}
- iso_stream_put (ehci, stream);
done:
itd->urb = NULL;
- if (ehci->clock_frame != itd->frame || itd->index[7] != -1) {
- /* OK to recycle this ITD now. */
- itd->stream = NULL;
- list_move(&itd->itd_list, &stream->free_list);
- iso_stream_put(ehci, stream);
- } else {
- /* HW might remember this ITD, so we can't recycle it yet.
- * Move it to a safe place until a new frame starts.
- */
- list_move(&itd->itd_list, &ehci->cached_itd_list);
- if (stream->refcount == 2) {
- /* If iso_stream_put() were called here, stream
- * would be freed. Instead, just prevent reuse.
- */
- stream->ep->hcpriv = NULL;
- stream->ep = NULL;
- }
+
+ /* Add to the end of the free list for later reuse */
+ list_move_tail(&itd->itd_list, &stream->free_list);
+
+ /* Recycle the iTDs when the pipeline is empty (ep no longer in use) */
+ if (list_empty(&stream->td_list)) {
+ list_splice_tail_init(&stream->free_list,
+ &ehci->cached_itd_list);
+ start_free_itds(ehci);
}
+
return retval;
}
itd_link_urb (ehci, urb, ehci->periodic_size << 3, stream);
else
usb_hcd_unlink_urb_from_ep(ehci_to_hcd(ehci), urb);
-done_not_linked:
+ done_not_linked:
spin_unlock_irqrestore (&ehci->lock, flags);
-
-done:
- if (unlikely (status < 0))
- iso_stream_put (ehci, stream);
+ done:
return status;
}
* means we never need two sitds for full speed packets.
*/
- /* free_list.next might be cache-hot ... but maybe
- * the HC caches it too. avoid that issue for now.
+ /*
+ * Use siTDs from the free list, but not siTDs that may
+ * still be in use by the hardware.
*/
-
- /* prefer previously-allocated sitds */
- if (!list_empty(&stream->free_list)) {
- sitd = list_entry (stream->free_list.prev,
+ if (likely(!list_empty(&stream->free_list))) {
+ sitd = list_first_entry(&stream->free_list,
struct ehci_sitd, sitd_list);
+ if (sitd->frame == ehci->now_frame)
+ goto alloc_sitd;
list_del (&sitd->sitd_list);
sitd_dma = sitd->sitd_dma;
} else {
+ alloc_sitd:
spin_unlock_irqrestore (&ehci->lock, flags);
sitd = dma_pool_alloc (ehci->sitd_pool, mem_flags,
&sitd_dma);
}
/* fit urb's sitds into the selected schedule slot; activate as needed */
-static int
-sitd_link_urb (
+static void sitd_link_urb(
struct ehci_hcd *ehci,
struct urb *urb,
unsigned mod,
sitd = list_entry (sched->td_list.next,
struct ehci_sitd, sitd_list);
list_move_tail (&sitd->sitd_list, &stream->td_list);
- sitd->stream = iso_stream_get (stream);
+ sitd->stream = stream;
sitd->urb = urb;
sitd_patch(ehci, stream, sitd, sched, packet);
iso_sched_free (stream, sched);
urb->hcpriv = NULL;
- timer_action (ehci, TIMER_IO_WATCHDOG);
- return enable_periodic(ehci);
+ ++ehci->isoc_count;
+ enable_periodic(ehci);
}
/*-------------------------------------------------------------------------*/
* (b) only this endpoint's completions submit URBs. It seems some silicon
* corrupts things if you reuse completed descriptors very quickly...
*/
-static unsigned
-sitd_complete (
- struct ehci_hcd *ehci,
- struct ehci_sitd *sitd
-) {
+static bool sitd_complete(struct ehci_hcd *ehci, struct ehci_sitd *sitd)
+{
struct urb *urb = sitd->urb;
struct usb_iso_packet_descriptor *desc;
u32 t;
int urb_index = -1;
struct ehci_iso_stream *stream = sitd->stream;
struct usb_device *dev;
- unsigned retval = false;
+ bool retval = false;
urb_index = sitd->index;
desc = &urb->iso_frame_desc [urb_index];
ehci_urb_done(ehci, urb, 0);
retval = true;
urb = NULL;
- (void) disable_periodic(ehci);
- ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--;
+ --ehci->isoc_count;
+ disable_periodic(ehci);
+
+ ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--;
if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) {
if (ehci->amd_pll_fix == 1)
usb_amd_quirk_pll_enable();
dev->devpath, stream->bEndpointAddress & 0x0f,
(stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out");
}
- iso_stream_put (ehci, stream);
done:
sitd->urb = NULL;
- if (ehci->clock_frame != sitd->frame) {
- /* OK to recycle this SITD now. */
- sitd->stream = NULL;
- list_move(&sitd->sitd_list, &stream->free_list);
- iso_stream_put(ehci, stream);
- } else {
- /* HW might remember this SITD, so we can't recycle it yet.
- * Move it to a safe place until a new frame starts.
- */
- list_move(&sitd->sitd_list, &ehci->cached_sitd_list);
- if (stream->refcount == 2) {
- /* If iso_stream_put() were called here, stream
- * would be freed. Instead, just prevent reuse.
- */
- stream->ep->hcpriv = NULL;
- stream->ep = NULL;
- }
+
+ /* Add to the end of the free list for later reuse */
+ list_move_tail(&sitd->sitd_list, &stream->free_list);
+
+ /* Recycle the siTDs when the pipeline is empty (ep no longer in use) */
+ if (list_empty(&stream->td_list)) {
+ list_splice_tail_init(&stream->free_list,
+ &ehci->cached_sitd_list);
+ start_free_itds(ehci);
}
+
return retval;
}
sitd_link_urb (ehci, urb, ehci->periodic_size << 3, stream);
else
usb_hcd_unlink_urb_from_ep(ehci_to_hcd(ehci), urb);
-done_not_linked:
+ done_not_linked:
spin_unlock_irqrestore (&ehci->lock, flags);
-
-done:
- if (status < 0)
- iso_stream_put (ehci, stream);
+ done:
return status;
}
/*-------------------------------------------------------------------------*/
-static void free_cached_lists(struct ehci_hcd *ehci)
+static void scan_isoc(struct ehci_hcd *ehci)
{
- struct ehci_itd *itd, *n;
- struct ehci_sitd *sitd, *sn;
-
- list_for_each_entry_safe(itd, n, &ehci->cached_itd_list, itd_list) {
- struct ehci_iso_stream *stream = itd->stream;
- itd->stream = NULL;
- list_move(&itd->itd_list, &stream->free_list);
- iso_stream_put(ehci, stream);
- }
-
- list_for_each_entry_safe(sitd, sn, &ehci->cached_sitd_list, sitd_list) {
- struct ehci_iso_stream *stream = sitd->stream;
- sitd->stream = NULL;
- list_move(&sitd->sitd_list, &stream->free_list);
- iso_stream_put(ehci, stream);
- }
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void
-scan_periodic (struct ehci_hcd *ehci)
-{
- unsigned now_uframe, frame, clock, clock_frame, mod;
- unsigned modified;
-
- mod = ehci->periodic_size << 3;
+ unsigned uf, now_frame, frame;
+ unsigned fmask = ehci->periodic_size - 1;
+ bool modified, live;
/*
* When running, scan from last scan point up to "now"
* else clean up by scanning everything that's left.
* Touches as few pages as possible: cache-friendly.
*/
- now_uframe = ehci->next_uframe;
- if (ehci->rh_state == EHCI_RH_RUNNING) {
- clock = ehci_read_frame_index(ehci);
- clock_frame = (clock >> 3) & (ehci->periodic_size - 1);
+ if (ehci->rh_state >= EHCI_RH_RUNNING) {
+ uf = ehci_read_frame_index(ehci);
+ now_frame = (uf >> 3) & fmask;
+ live = true;
} else {
- clock = now_uframe + mod - 1;
- clock_frame = -1;
+ now_frame = (ehci->next_frame - 1) & fmask;
+ live = false;
}
- if (ehci->clock_frame != clock_frame) {
- free_cached_lists(ehci);
- ehci->clock_frame = clock_frame;
- }
- clock &= mod - 1;
- clock_frame = clock >> 3;
- ++ehci->periodic_stamp;
+ ehci->now_frame = now_frame;
+ frame = ehci->next_frame;
for (;;) {
union ehci_shadow q, *q_p;
__hc32 type, *hw_p;
- unsigned incomplete = false;
-
- frame = now_uframe >> 3;
restart:
/* scan each element in frame's queue for completions */
hw_p = &ehci->periodic [frame];
q.ptr = q_p->ptr;
type = Q_NEXT_TYPE(ehci, *hw_p);
- modified = 0;
+ modified = false;
while (q.ptr != NULL) {
- unsigned uf;
- union ehci_shadow temp;
- int live;
-
- live = (ehci->rh_state == EHCI_RH_RUNNING);
switch (hc32_to_cpu(ehci, type)) {
- case Q_TYPE_QH:
- /* handle any completions */
- temp.qh = qh_get (q.qh);
- type = Q_NEXT_TYPE(ehci, q.qh->hw->hw_next);
- q = q.qh->qh_next;
- if (temp.qh->stamp != ehci->periodic_stamp) {
- modified = qh_completions(ehci, temp.qh);
- if (!modified)
- temp.qh->stamp = ehci->periodic_stamp;
- if (unlikely(list_empty(&temp.qh->qtd_list) ||
- temp.qh->needs_rescan))
- intr_deschedule(ehci, temp.qh);
- }
- qh_put (temp.qh);
- break;
- case Q_TYPE_FSTN:
- /* for "save place" FSTNs, look at QH entries
- * in the previous frame for completions.
- */
- if (q.fstn->hw_prev != EHCI_LIST_END(ehci)) {
- ehci_dbg(ehci,
- "ignoring completions from FSTNs\n");
- }
- type = Q_NEXT_TYPE(ehci, q.fstn->hw_next);
- q = q.fstn->fstn_next;
- break;
case Q_TYPE_ITD:
/* If this ITD is still active, leave it for
* later processing ... check the next entry.
* No need to check for activity unless the
* frame is current.
*/
- if (frame == clock_frame && live) {
+ if (frame == now_frame && live) {
rmb();
for (uf = 0; uf < 8; uf++) {
if (q.itd->hw_transaction[uf] &
break;
}
if (uf < 8) {
- incomplete = true;
q_p = &q.itd->itd_next;
hw_p = &q.itd->hw_next;
type = Q_NEXT_TYPE(ehci,
* No need to check for activity unless the
* frame is current.
*/
- if (((frame == clock_frame) ||
- (((frame + 1) & (ehci->periodic_size - 1))
- == clock_frame))
+ if (((frame == now_frame) ||
+ (((frame + 1) & fmask) == now_frame))
&& live
&& (q.sitd->hw_results &
SITD_ACTIVE(ehci))) {
- incomplete = true;
q_p = &q.sitd->sitd_next;
hw_p = &q.sitd->hw_next;
type = Q_NEXT_TYPE(ehci,
ehci_dbg(ehci, "corrupt type %d frame %d shadow %p\n",
type, frame, q.ptr);
// BUG ();
+ /* FALL THROUGH */
+ case Q_TYPE_QH:
+ case Q_TYPE_FSTN:
+ /* End of the iTDs and siTDs */
q.ptr = NULL;
+ break;
}
/* assume completion callbacks modify the queue */
- if (unlikely (modified)) {
- if (likely(ehci->periodic_sched > 0))
- goto restart;
- /* short-circuit this scan */
- now_uframe = clock;
- break;
- }
+ if (unlikely(modified && ehci->isoc_count > 0))
+ goto restart;
}
- /* If we can tell we caught up to the hardware, stop now.
- * We can't advance our scan without collecting the ISO
- * transfers that are still pending in this frame.
- */
- if (incomplete && ehci->rh_state == EHCI_RH_RUNNING) {
- ehci->next_uframe = now_uframe;
+ /* Stop when we have reached the current frame */
+ if (frame == now_frame)
break;
- }
-
- // FIXME: this assumes we won't get lapped when
- // latencies climb; that should be rare, but...
- // detect it, and just go all the way around.
- // FLR might help detect this case, so long as latencies
- // don't exceed periodic_size msec (default 1.024 sec).
-
- // FIXME: likewise assumes HC doesn't halt mid-scan
-
- if (now_uframe == clock) {
- unsigned now;
-
- if (ehci->rh_state != EHCI_RH_RUNNING
- || ehci->periodic_sched == 0)
- break;
- ehci->next_uframe = now_uframe;
- now = ehci_read_frame_index(ehci) & (mod - 1);
- if (now_uframe == now)
- break;
-
- /* rescan the rest of this frame, then ... */
- clock = now;
- clock_frame = clock >> 3;
- if (ehci->clock_frame != clock_frame) {
- free_cached_lists(ehci);
- ehci->clock_frame = clock_frame;
- ++ehci->periodic_stamp;
- }
- } else {
- now_uframe++;
- now_uframe &= mod - 1;
- }
+ frame = (frame + 1) & fmask;
}
+ ehci->next_frame = now_frame;
}
static int ehci_hcd_sead3_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- unsigned long flags;
- int rc = 0;
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(20);
-
- /* Root hub was already suspended. Disable irq emission and
- * mark HW unaccessible. The PM and USB cores make sure that
- * the root hub is either suspended or stopped.
- */
- ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev));
- spin_lock_irqsave(&ehci->lock, flags);
- ehci_writel(ehci, 0, &ehci->regs->intr_enable);
- (void)ehci_readl(ehci, &ehci->regs->intr_enable);
-
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
- spin_unlock_irqrestore(&ehci->lock, flags);
+ bool do_wakeup = device_may_wakeup(dev);
- /* could save FLADJ in case of Vaux power loss
- * ... we'd only use it to handle clock skew
- */
-
- return rc;
+ return ehci_suspend(hcd, do_wakeup);
}
static int ehci_hcd_sead3_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-
- /* maybe restore FLADJ. */
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(100);
-
- /* Mark hardware accessible again as we are out of D3 state by now */
- set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
- /* If CF is still set, we maintained PCI Vaux power.
- * Just undo the effect of ehci_pci_suspend().
- */
- if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
- int mask = INTR_MASK;
-
- ehci_prepare_ports_for_controller_resume(ehci);
- if (!hcd->self.root_hub->do_remote_wakeup)
- mask &= ~STS_PCD;
- ehci_writel(ehci, mask, &ehci->regs->intr_enable);
- ehci_readl(ehci, &ehci->regs->intr_enable);
- return 0;
- }
-
- ehci_dbg(ehci, "lost power, restarting\n");
- usb_root_hub_lost_power(hcd->self.root_hub);
-
- /* Else reset, to cope with power loss or flush-to-storage
- * style "resume" having let BIOS kick in during reboot.
- */
- (void) ehci_halt(ehci);
- (void) ehci_reset(ehci);
-
- /* emptying the schedule aborts any urbs */
- spin_lock_irq(&ehci->lock);
- if (ehci->reclaim)
- end_unlink_async(ehci);
- ehci_work(ehci);
- spin_unlock_irq(&ehci->lock);
-
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
- ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
-
- /* here we "know" root ports should always stay powered */
- ehci_port_power(ehci, 1);
-
- ehci->rh_state = EHCI_RH_SUSPENDED;
+ ehci_resume(hcd, false);
return 0;
}
int ret;
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci,
- &ehci->caps->hc_capbase));
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
- ret = ehci_halt(ehci);
- if (unlikely(ret))
- return ret;
-
- ret = ehci_init(hcd);
+ ret = ehci_setup(hcd);
if (unlikely(ret))
return ret;
- ehci->sbrn = 0x20;
-
- ehci_reset(ehci);
ehci_port_power(ehci, 0);
return ret;
/* registers start at offset 0x0 */
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci,
- &ehci->caps->hc_capbase));
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
- ehci_reset(ehci);
ehci_port_power(ehci, 0);
return retval;
static int ehci_spear_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- unsigned long flags;
- int rc = 0;
+ bool do_wakeup = device_may_wakeup(dev);
- if (time_before(jiffies, ehci->next_statechange))
- msleep(10);
-
- /*
- * Root hub was already suspended. Disable irq emission and mark HW
- * unaccessible. The PM and USB cores make sure that the root hub is
- * either suspended or stopped.
- */
- spin_lock_irqsave(&ehci->lock, flags);
- ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev));
- ehci_writel(ehci, 0, &ehci->regs->intr_enable);
- ehci_readl(ehci, &ehci->regs->intr_enable);
- spin_unlock_irqrestore(&ehci->lock, flags);
-
- return rc;
+ return ehci_suspend(hcd, do_wakeup);
}
static int ehci_spear_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(100);
-
- if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
- int mask = INTR_MASK;
-
- ehci_prepare_ports_for_controller_resume(ehci);
-
- if (!hcd->self.root_hub->do_remote_wakeup)
- mask &= ~STS_PCD;
-
- ehci_writel(ehci, mask, &ehci->regs->intr_enable);
- ehci_readl(ehci, &ehci->regs->intr_enable);
- return 0;
- }
-
- usb_root_hub_lost_power(hcd->self.root_hub);
-
- /*
- * Else reset, to cope with power loss or flush-to-storage style
- * "resume" having let BIOS kick in during reboot.
- */
- ehci_halt(ehci);
- ehci_reset(ehci);
-
- /* emptying the schedule aborts any urbs */
- spin_lock_irq(&ehci->lock);
- if (ehci->reclaim)
- end_unlink_async(ehci);
-
- ehci_work(ehci);
- spin_unlock_irq(&ehci->lock);
-
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
- ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
- /* here we "know" root ports should always stay powered */
- ehci_port_power(ehci, 1);
+ ehci_resume(hcd, false);
return 0;
}
#endif /* CONFIG_PM */
*/
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/platform_data/tegra_usb.h>
#include <linux/irq.h>
/* EHCI registers start at offset 0x100 */
ehci->caps = hcd->regs + 0x100;
- ehci->regs = hcd->regs + 0x100 +
- HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
-
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = readl(&ehci->caps->hcs_params);
/* switch to host mode */
hcd->has_tt = 1;
- ehci_reset(ehci);
-
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
- /* data structure init */
- retval = ehci_init(hcd);
+ retval = ehci_setup(hcd);
if (retval)
return retval;
- ehci->sbrn = 0x20;
-
ehci_port_power(ehci, 1);
return retval;
}
if (time_before(jiffies, ehci->next_statechange))
msleep(10);
- spin_lock_irqsave(&ehci->lock, flags);
+ ehci_halt(ehci);
+ spin_lock_irqsave(&ehci->lock, flags);
tegra->port_speed = (readl(&hw->port_status[0]) >> 26) & 0x3;
- ehci_halt(ehci);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
spin_unlock_irqrestore(&ehci->lock, flags);
tegra_ehci_power_down(hcd);
#ifdef CONFIG_USB_OTG_UTILS
if (pdata->operating_mode == TEGRA_USB_OTG) {
- tegra->transceiver = usb_get_transceiver();
- if (tegra->transceiver)
+ tegra->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (!IS_ERR_OR_NULL(tegra->transceiver))
otg_set_host(tegra->transceiver->otg, &hcd->self);
}
#endif
fail:
#ifdef CONFIG_USB_OTG_UTILS
- if (tegra->transceiver) {
+ if (!IS_ERR_OR_NULL(tegra->transceiver)) {
otg_set_host(tegra->transceiver->otg, NULL);
- usb_put_transceiver(tegra->transceiver);
+ usb_put_phy(tegra->transceiver);
}
#endif
tegra_usb_phy_close(tegra->phy);
pm_runtime_put_noidle(&pdev->dev);
#ifdef CONFIG_USB_OTG_UTILS
- if (tegra->transceiver) {
+ if (!IS_ERR_OR_NULL(tegra->transceiver)) {
otg_set_host(tegra->transceiver->otg, NULL);
- usb_put_transceiver(tegra->transceiver);
+ usb_put_phy(tegra->transceiver);
}
#endif
--- /dev/null
+/*
+ * Copyright (C) 2012 by Alan Stern
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+/* This file is part of ehci-hcd.c */
+
+/*-------------------------------------------------------------------------*/
+
+/* Set a bit in the USBCMD register */
+static void ehci_set_command_bit(struct ehci_hcd *ehci, u32 bit)
+{
+ ehci->command |= bit;
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
+
+ /* unblock posted write */
+ ehci_readl(ehci, &ehci->regs->command);
+}
+
+/* Clear a bit in the USBCMD register */
+static void ehci_clear_command_bit(struct ehci_hcd *ehci, u32 bit)
+{
+ ehci->command &= ~bit;
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
+
+ /* unblock posted write */
+ ehci_readl(ehci, &ehci->regs->command);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * EHCI timer support... Now using hrtimers.
+ *
+ * Lots of different events are triggered from ehci->hrtimer. Whenever
+ * the timer routine runs, it checks each possible event; events that are
+ * currently enabled and whose expiration time has passed get handled.
+ * The set of enabled events is stored as a collection of bitflags in
+ * ehci->enabled_hrtimer_events, and they are numbered in order of
+ * increasing delay values (ranging between 1 ms and 100 ms).
+ *
+ * Rather than implementing a sorted list or tree of all pending events,
+ * we keep track only of the lowest-numbered pending event, in
+ * ehci->next_hrtimer_event. Whenever ehci->hrtimer gets restarted, its
+ * expiration time is set to the timeout value for this event.
+ *
+ * As a result, events might not get handled right away; the actual delay
+ * could be anywhere up to twice the requested delay. This doesn't
+ * matter, because none of the events are especially time-critical. The
+ * ones that matter most all have a delay of 1 ms, so they will be
+ * handled after 2 ms at most, which is okay. In addition to this, we
+ * allow for an expiration range of 1 ms.
+ */
+
+/*
+ * Delay lengths for the hrtimer event types.
+ * Keep this list sorted by delay length, in the same order as
+ * the event types indexed by enum ehci_hrtimer_event in ehci.h.
+ */
+static unsigned event_delays_ns[] = {
+ 1 * NSEC_PER_MSEC, /* EHCI_HRTIMER_POLL_ASS */
+ 1 * NSEC_PER_MSEC, /* EHCI_HRTIMER_POLL_PSS */
+ 1 * NSEC_PER_MSEC, /* EHCI_HRTIMER_POLL_DEAD */
+ 1125 * NSEC_PER_USEC, /* EHCI_HRTIMER_UNLINK_INTR */
+ 2 * NSEC_PER_MSEC, /* EHCI_HRTIMER_FREE_ITDS */
+ 6 * NSEC_PER_MSEC, /* EHCI_HRTIMER_ASYNC_UNLINKS */
+ 10 * NSEC_PER_MSEC, /* EHCI_HRTIMER_IAA_WATCHDOG */
+ 10 * NSEC_PER_MSEC, /* EHCI_HRTIMER_DISABLE_PERIODIC */
+ 15 * NSEC_PER_MSEC, /* EHCI_HRTIMER_DISABLE_ASYNC */
+ 100 * NSEC_PER_MSEC, /* EHCI_HRTIMER_IO_WATCHDOG */
+};
+
+/* Enable a pending hrtimer event */
+static void ehci_enable_event(struct ehci_hcd *ehci, unsigned event,
+ bool resched)
+{
+ ktime_t *timeout = &ehci->hr_timeouts[event];
+
+ if (resched)
+ *timeout = ktime_add(ktime_get(),
+ ktime_set(0, event_delays_ns[event]));
+ ehci->enabled_hrtimer_events |= (1 << event);
+
+ /* Track only the lowest-numbered pending event */
+ if (event < ehci->next_hrtimer_event) {
+ ehci->next_hrtimer_event = event;
+ hrtimer_start_range_ns(&ehci->hrtimer, *timeout,
+ NSEC_PER_MSEC, HRTIMER_MODE_ABS);
+ }
+}
+
+
+/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */
+static void ehci_poll_ASS(struct ehci_hcd *ehci)
+{
+ unsigned actual, want;
+
+ /* Don't enable anything if the controller isn't running (e.g., died) */
+ if (ehci->rh_state != EHCI_RH_RUNNING)
+ return;
+
+ want = (ehci->command & CMD_ASE) ? STS_ASS : 0;
+ actual = ehci_readl(ehci, &ehci->regs->status) & STS_ASS;
+
+ if (want != actual) {
+
+ /* Poll again later, but give up after about 20 ms */
+ if (ehci->ASS_poll_count++ < 20) {
+ ehci_enable_event(ehci, EHCI_HRTIMER_POLL_ASS, true);
+ return;
+ }
+ ehci_warn(ehci, "Waited too long for the async schedule status, giving up\n");
+ }
+ ehci->ASS_poll_count = 0;
+
+ /* The status is up-to-date; restart or stop the schedule as needed */
+ if (want == 0) { /* Stopped */
+ if (ehci->async_count > 0)
+ ehci_set_command_bit(ehci, CMD_ASE);
+
+ } else { /* Running */
+ if (ehci->async_count == 0) {
+
+ /* Turn off the schedule after a while */
+ ehci_enable_event(ehci, EHCI_HRTIMER_DISABLE_ASYNC,
+ true);
+ }
+ }
+}
+
+/* Turn off the async schedule after a brief delay */
+static void ehci_disable_ASE(struct ehci_hcd *ehci)
+{
+ ehci_clear_command_bit(ehci, CMD_ASE);
+}
+
+
+/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */
+static void ehci_poll_PSS(struct ehci_hcd *ehci)
+{
+ unsigned actual, want;
+
+ /* Don't do anything if the controller isn't running (e.g., died) */
+ if (ehci->rh_state != EHCI_RH_RUNNING)
+ return;
+
+ want = (ehci->command & CMD_PSE) ? STS_PSS : 0;
+ actual = ehci_readl(ehci, &ehci->regs->status) & STS_PSS;
+
+ if (want != actual) {
+
+ /* Poll again later, but give up after about 20 ms */
+ if (ehci->PSS_poll_count++ < 20) {
+ ehci_enable_event(ehci, EHCI_HRTIMER_POLL_PSS, true);
+ return;
+ }
+ ehci_warn(ehci, "Waited too long for the periodic schedule status, giving up\n");
+ }
+ ehci->PSS_poll_count = 0;
+
+ /* The status is up-to-date; restart or stop the schedule as needed */
+ if (want == 0) { /* Stopped */
+ if (ehci->periodic_count > 0)
+ ehci_set_command_bit(ehci, CMD_PSE);
+
+ } else { /* Running */
+ if (ehci->periodic_count == 0) {
+
+ /* Turn off the schedule after a while */
+ ehci_enable_event(ehci, EHCI_HRTIMER_DISABLE_PERIODIC,
+ true);
+ }
+ }
+}
+
+/* Turn off the periodic schedule after a brief delay */
+static void ehci_disable_PSE(struct ehci_hcd *ehci)
+{
+ ehci_clear_command_bit(ehci, CMD_PSE);
+}
+
+
+/* Poll the STS_HALT status bit; see when a dead controller stops */
+static void ehci_handle_controller_death(struct ehci_hcd *ehci)
+{
+ if (!(ehci_readl(ehci, &ehci->regs->status) & STS_HALT)) {
+
+ /* Give up after a few milliseconds */
+ if (ehci->died_poll_count++ < 5) {
+ /* Try again later */
+ ehci_enable_event(ehci, EHCI_HRTIMER_POLL_DEAD, true);
+ return;
+ }
+ ehci_warn(ehci, "Waited too long for the controller to stop, giving up\n");
+ }
+
+ /* Clean up the mess */
+ ehci->rh_state = EHCI_RH_HALTED;
+ ehci_writel(ehci, 0, &ehci->regs->configured_flag);
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
+ ehci_work(ehci);
+ end_unlink_async(ehci);
+
+ /* Not in process context, so don't try to reset the controller */
+}
+
+
+/* Handle unlinked interrupt QHs once they are gone from the hardware */
+static void ehci_handle_intr_unlinks(struct ehci_hcd *ehci)
+{
+ bool stopped = (ehci->rh_state < EHCI_RH_RUNNING);
+
+ /*
+ * Process all the QHs on the intr_unlink list that were added
+ * before the current unlink cycle began. The list is in
+ * temporal order, so stop when we reach the first entry in the
+ * current cycle. But if the root hub isn't running then
+ * process all the QHs on the list.
+ */
+ ehci->intr_unlinking = true;
+ while (ehci->intr_unlink) {
+ struct ehci_qh *qh = ehci->intr_unlink;
+
+ if (!stopped && qh->unlink_cycle == ehci->intr_unlink_cycle)
+ break;
+ ehci->intr_unlink = qh->unlink_next;
+ qh->unlink_next = NULL;
+ end_unlink_intr(ehci, qh);
+ }
+
+ /* Handle remaining entries later */
+ if (ehci->intr_unlink) {
+ ehci_enable_event(ehci, EHCI_HRTIMER_UNLINK_INTR, true);
+ ++ehci->intr_unlink_cycle;
+ }
+ ehci->intr_unlinking = false;
+}
+
+
+/* Start another free-iTDs/siTDs cycle */
+static void start_free_itds(struct ehci_hcd *ehci)
+{
+ if (!(ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_FREE_ITDS))) {
+ ehci->last_itd_to_free = list_entry(
+ ehci->cached_itd_list.prev,
+ struct ehci_itd, itd_list);
+ ehci->last_sitd_to_free = list_entry(
+ ehci->cached_sitd_list.prev,
+ struct ehci_sitd, sitd_list);
+ ehci_enable_event(ehci, EHCI_HRTIMER_FREE_ITDS, true);
+ }
+}
+
+/* Wait for controller to stop using old iTDs and siTDs */
+static void end_free_itds(struct ehci_hcd *ehci)
+{
+ struct ehci_itd *itd, *n;
+ struct ehci_sitd *sitd, *sn;
+
+ if (ehci->rh_state < EHCI_RH_RUNNING) {
+ ehci->last_itd_to_free = NULL;
+ ehci->last_sitd_to_free = NULL;
+ }
+
+ list_for_each_entry_safe(itd, n, &ehci->cached_itd_list, itd_list) {
+ list_del(&itd->itd_list);
+ dma_pool_free(ehci->itd_pool, itd, itd->itd_dma);
+ if (itd == ehci->last_itd_to_free)
+ break;
+ }
+ list_for_each_entry_safe(sitd, sn, &ehci->cached_sitd_list, sitd_list) {
+ list_del(&sitd->sitd_list);
+ dma_pool_free(ehci->sitd_pool, sitd, sitd->sitd_dma);
+ if (sitd == ehci->last_sitd_to_free)
+ break;
+ }
+
+ if (!list_empty(&ehci->cached_itd_list) ||
+ !list_empty(&ehci->cached_sitd_list))
+ start_free_itds(ehci);
+}
+
+
+/* Handle lost (or very late) IAA interrupts */
+static void ehci_iaa_watchdog(struct ehci_hcd *ehci)
+{
+ if (ehci->rh_state != EHCI_RH_RUNNING)
+ return;
+
+ /*
+ * Lost IAA irqs wedge things badly; seen first with a vt8235.
+ * So we need this watchdog, but must protect it against both
+ * (a) SMP races against real IAA firing and retriggering, and
+ * (b) clean HC shutdown, when IAA watchdog was pending.
+ */
+ if (ehci->async_iaa) {
+ u32 cmd, status;
+
+ /* If we get here, IAA is *REALLY* late. It's barely
+ * conceivable that the system is so busy that CMD_IAAD
+ * is still legitimately set, so let's be sure it's
+ * clear before we read STS_IAA. (The HC should clear
+ * CMD_IAAD when it sets STS_IAA.)
+ */
+ cmd = ehci_readl(ehci, &ehci->regs->command);
+
+ /*
+ * If IAA is set here it either legitimately triggered
+ * after the watchdog timer expired (_way_ late, so we'll
+ * still count it as lost) ... or a silicon erratum:
+ * - VIA seems to set IAA without triggering the IRQ;
+ * - IAAD potentially cleared without setting IAA.
+ */
+ status = ehci_readl(ehci, &ehci->regs->status);
+ if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
+ COUNT(ehci->stats.lost_iaa);
+ ehci_writel(ehci, STS_IAA, &ehci->regs->status);
+ }
+
+ ehci_vdbg(ehci, "IAA watchdog: status %x cmd %x\n",
+ status, cmd);
+ end_unlink_async(ehci);
+ }
+}
+
+
+/* Enable the I/O watchdog, if appropriate */
+static void turn_on_io_watchdog(struct ehci_hcd *ehci)
+{
+ /* Not needed if the controller isn't running or it's already enabled */
+ if (ehci->rh_state != EHCI_RH_RUNNING ||
+ (ehci->enabled_hrtimer_events &
+ BIT(EHCI_HRTIMER_IO_WATCHDOG)))
+ return;
+
+ /*
+ * Isochronous transfers always need the watchdog.
+ * For other sorts we use it only if the flag is set.
+ */
+ if (ehci->isoc_count > 0 || (ehci->need_io_watchdog &&
+ ehci->async_count + ehci->intr_count > 0))
+ ehci_enable_event(ehci, EHCI_HRTIMER_IO_WATCHDOG, true);
+}
+
+
+/*
+ * Handler functions for the hrtimer event types.
+ * Keep this array in the same order as the event types indexed by
+ * enum ehci_hrtimer_event in ehci.h.
+ */
+static void (*event_handlers[])(struct ehci_hcd *) = {
+ ehci_poll_ASS, /* EHCI_HRTIMER_POLL_ASS */
+ ehci_poll_PSS, /* EHCI_HRTIMER_POLL_PSS */
+ ehci_handle_controller_death, /* EHCI_HRTIMER_POLL_DEAD */
+ ehci_handle_intr_unlinks, /* EHCI_HRTIMER_UNLINK_INTR */
+ end_free_itds, /* EHCI_HRTIMER_FREE_ITDS */
+ unlink_empty_async, /* EHCI_HRTIMER_ASYNC_UNLINKS */
+ ehci_iaa_watchdog, /* EHCI_HRTIMER_IAA_WATCHDOG */
+ ehci_disable_PSE, /* EHCI_HRTIMER_DISABLE_PERIODIC */
+ ehci_disable_ASE, /* EHCI_HRTIMER_DISABLE_ASYNC */
+ ehci_work, /* EHCI_HRTIMER_IO_WATCHDOG */
+};
+
+static enum hrtimer_restart ehci_hrtimer_func(struct hrtimer *t)
+{
+ struct ehci_hcd *ehci = container_of(t, struct ehci_hcd, hrtimer);
+ ktime_t now;
+ unsigned long events;
+ unsigned long flags;
+ unsigned e;
+
+ spin_lock_irqsave(&ehci->lock, flags);
+
+ events = ehci->enabled_hrtimer_events;
+ ehci->enabled_hrtimer_events = 0;
+ ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT;
+
+ /*
+ * Check each pending event. If its time has expired, handle
+ * the event; otherwise re-enable it.
+ */
+ now = ktime_get();
+ for_each_set_bit(e, &events, EHCI_HRTIMER_NUM_EVENTS) {
+ if (now.tv64 >= ehci->hr_timeouts[e].tv64)
+ event_handlers[e](ehci);
+ else
+ ehci_enable_event(ehci, e, false);
+ }
+
+ spin_unlock_irqrestore(&ehci->lock, flags);
+ return HRTIMER_NORESTART;
+}
/*
* basic lifecycle operations
*/
- .reset = ehci_init,
+ .reset = ehci_setup,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
-
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = readl(&ehci->caps->hcs_params);
-
- ehci_port_power(ehci, 1);
-
- ehci_reset(ehci);
ret = usb_add_hcd(hcd, pdev->resource[1].start,
IRQF_SHARED);
val |= ENPHY;
__raw_writel(val, ehci->regs+PHY1_CTR);
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
- ehci->sbrn = 0x20;
-
irq = platform_get_irq(pdev, 0);
if (irq < 0)
goto err4;
- ehci_reset(ehci);
-
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (retval != 0)
goto err4;
- ehci_writel(ehci, 1, &ehci->regs->configured_flag);
-
return retval;
err4:
iounmap(hcd->regs);
/*
* basic lifecycle operations
*/
- .reset = ehci_init,
+ .reset = ehci_setup,
.start = ehci_run,
.stop = ehci_stop,
#include <linux/of_address.h>
/**
- * ehci_xilinx_of_setup - Initialize the device for ehci_reset()
- * @hcd: Pointer to the usb_hcd device to which the host controller bound
- *
- * called during probe() after chip reset completes.
- */
-static int ehci_xilinx_of_setup(struct usb_hcd *hcd)
-{
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- int retval;
-
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
-
- retval = ehci_init(hcd);
- if (retval)
- return retval;
-
- ehci->sbrn = 0x20;
-
- return ehci_reset(ehci);
-}
-
-/**
* ehci_xilinx_port_handed_over - hand the port out if failed to enable it
* @hcd: Pointer to the usb_hcd device to which the host controller bound
* @portnum:Port number to which the device is attached.
/*
* basic lifecycle operations
*/
- .reset = ehci_xilinx_of_setup,
+ .reset = ehci_setup,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
/* Debug registers are at the first 0x100 region
*/
ehci->caps = hcd->regs + 0x100;
- ehci->regs = hcd->regs + 0x100 +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
rv = usb_add_hcd(hcd, irq, 0);
if (rv == 0)
static int ehci_xls_setup(struct usb_hcd *hcd)
{
- int retval;
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-
- retval = ehci_halt(ehci);
- if (retval)
- return retval;
-
- /* data structure init */
- retval = ehci_init(hcd);
- if (retval)
- return retval;
-
- ehci_reset(ehci);
-
- return retval;
+ return ehci_setup(hcd);
}
int ehci_xls_probe_internal(const struct hc_driver *driver,
/* irq usage */
unsigned long normal;
unsigned long error;
- unsigned long reclaim;
+ unsigned long iaa;
unsigned long lost_iaa;
/* termination of urbs from core */
};
/* ehci_hcd->lock guards shared data against other CPUs:
- * ehci_hcd: async, reclaim, periodic (and shadow), ...
+ * ehci_hcd: async, unlink, periodic (and shadow), ...
* usb_host_endpoint: hcpriv
* ehci_qh: qh_next, qtd_list
* ehci_qtd: qtd_list
#define EHCI_MAX_ROOT_PORTS 15 /* see HCS_N_PORTS */
+/*
+ * ehci_rh_state values of EHCI_RH_RUNNING or above mean that the
+ * controller may be doing DMA. Lower values mean there's no DMA.
+ */
enum ehci_rh_state {
EHCI_RH_HALTED,
EHCI_RH_SUSPENDED,
- EHCI_RH_RUNNING
+ EHCI_RH_RUNNING,
+ EHCI_RH_STOPPING
};
+/*
+ * Timer events, ordered by increasing delay length.
+ * Always update event_delays_ns[] and event_handlers[] (defined in
+ * ehci-timer.c) in parallel with this list.
+ */
+enum ehci_hrtimer_event {
+ EHCI_HRTIMER_POLL_ASS, /* Poll for async schedule off */
+ EHCI_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */
+ EHCI_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */
+ EHCI_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */
+ EHCI_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */
+ EHCI_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */
+ EHCI_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */
+ EHCI_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */
+ EHCI_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */
+ EHCI_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */
+ EHCI_HRTIMER_NUM_EVENTS /* Must come last */
+};
+#define EHCI_HRTIMER_NO_EVENT 99
+
struct ehci_hcd { /* one per controller */
+ /* timing support */
+ enum ehci_hrtimer_event next_hrtimer_event;
+ unsigned enabled_hrtimer_events;
+ ktime_t hr_timeouts[EHCI_HRTIMER_NUM_EVENTS];
+ struct hrtimer hrtimer;
+
+ int PSS_poll_count;
+ int ASS_poll_count;
+ int died_poll_count;
+
/* glue to PCI and HCD framework */
struct ehci_caps __iomem *caps;
struct ehci_regs __iomem *regs;
spinlock_t lock;
enum ehci_rh_state rh_state;
+ /* general schedule support */
+ bool scanning:1;
+ bool need_rescan:1;
+ bool intr_unlinking:1;
+ bool async_unlinking:1;
+ bool shutdown:1;
+ struct ehci_qh *qh_scan_next;
+
/* async schedule support */
struct ehci_qh *async;
struct ehci_qh *dummy; /* For AMD quirk use */
- struct ehci_qh *reclaim;
- struct ehci_qh *qh_scan_next;
- unsigned scanning : 1;
+ struct ehci_qh *async_unlink;
+ struct ehci_qh *async_unlink_last;
+ struct ehci_qh *async_iaa;
+ unsigned async_unlink_cycle;
+ unsigned async_count; /* async activity count */
/* periodic schedule support */
#define DEFAULT_I_TDPS 1024 /* some HCs can do less */
unsigned periodic_size;
__hc32 *periodic; /* hw periodic table */
dma_addr_t periodic_dma;
+ struct list_head intr_qh_list;
unsigned i_thresh; /* uframes HC might cache */
union ehci_shadow *pshadow; /* mirror hw periodic table */
- int next_uframe; /* scan periodic, start here */
- unsigned periodic_sched; /* periodic activity count */
+ struct ehci_qh *intr_unlink;
+ struct ehci_qh *intr_unlink_last;
+ unsigned intr_unlink_cycle;
+ unsigned now_frame; /* frame from HC hardware */
+ unsigned next_frame; /* scan periodic, start here */
+ unsigned intr_count; /* intr activity count */
+ unsigned isoc_count; /* isoc activity count */
+ unsigned periodic_count; /* periodic activity count */
unsigned uframe_periodic_max; /* max periodic time per uframe */
- /* list of itds & sitds completed while clock_frame was still active */
+ /* list of itds & sitds completed while now_frame was still active */
struct list_head cached_itd_list;
+ struct ehci_itd *last_itd_to_free;
struct list_head cached_sitd_list;
- unsigned clock_frame;
+ struct ehci_sitd *last_sitd_to_free;
/* per root hub port */
unsigned long reset_done [EHCI_MAX_ROOT_PORTS];
struct dma_pool *itd_pool; /* itd per iso urb */
struct dma_pool *sitd_pool; /* sitd per split iso urb */
- struct timer_list iaa_watchdog;
- struct timer_list watchdog;
- unsigned long actions;
- unsigned periodic_stamp;
unsigned random_frame;
unsigned long next_statechange;
ktime_t last_periodic_enable;
unsigned big_endian_capbase:1;
unsigned has_amcc_usb23:1;
unsigned need_io_watchdog:1;
- unsigned broken_periodic:1;
unsigned amd_pll_fix:1;
unsigned fs_i_thresh:1; /* Intel iso scheduling */
unsigned use_dummy_qh:1; /* AMD Frame List table quirk*/
#ifdef DEBUG
struct dentry *debug_dir;
#endif
- /*
- * OTG controllers and transceivers need software interaction
- */
- struct usb_phy *transceiver;
};
/* convert between an HCD pointer and the corresponding EHCI_HCD */
return container_of ((void *) ehci, struct usb_hcd, hcd_priv);
}
-
-static inline void
-iaa_watchdog_start(struct ehci_hcd *ehci)
-{
- WARN_ON(timer_pending(&ehci->iaa_watchdog));
- mod_timer(&ehci->iaa_watchdog,
- jiffies + msecs_to_jiffies(EHCI_IAA_MSECS));
-}
-
-static inline void iaa_watchdog_done(struct ehci_hcd *ehci)
-{
- del_timer(&ehci->iaa_watchdog);
-}
-
-enum ehci_timer_action {
- TIMER_IO_WATCHDOG,
- TIMER_ASYNC_SHRINK,
- TIMER_ASYNC_OFF,
-};
-
-static inline void
-timer_action_done (struct ehci_hcd *ehci, enum ehci_timer_action action)
-{
- clear_bit (action, &ehci->actions);
-}
-
-static void free_cached_lists(struct ehci_hcd *ehci);
-
/*-------------------------------------------------------------------------*/
#include <linux/usb/ehci_def.h>
struct ehci_qh_hw {
__hc32 hw_next; /* see EHCI 3.6.1 */
__hc32 hw_info1; /* see EHCI 3.6.2 */
-#define QH_HEAD 0x00008000
+#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */
+#define QH_HEAD (1 << 15) /* Head of async reclamation list */
+#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */
+#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */
+#define QH_LOW_SPEED (1 << 12)
+#define QH_FULL_SPEED (0 << 12)
+#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */
__hc32 hw_info2; /* see EHCI 3.6.2 */
#define QH_SMASK 0x000000ff
#define QH_CMASK 0x0000ff00
} __attribute__ ((aligned(32)));
struct ehci_qh {
- struct ehci_qh_hw *hw;
+ struct ehci_qh_hw *hw; /* Must come first */
/* the rest is HCD-private */
dma_addr_t qh_dma; /* address of qh */
union ehci_shadow qh_next; /* ptr to qh; or periodic */
struct list_head qtd_list; /* sw qtd list */
+ struct list_head intr_node; /* list of intr QHs */
struct ehci_qtd *dummy;
- struct ehci_qh *reclaim; /* next to reclaim */
-
- struct ehci_hcd *ehci;
- unsigned long unlink_time;
+ struct ehci_qh *unlink_next; /* next on unlink list */
- /*
- * Do NOT use atomic operations for QH refcounting. On some CPUs
- * (PPC7448 for example), atomic operations cannot be performed on
- * memory that is cache-inhibited (i.e. being used for DMA).
- * Spinlocks are used to protect all QH fields.
- */
- u32 refcount;
- unsigned stamp;
+ unsigned unlink_cycle;
u8 needs_rescan; /* Dequeue during giveback */
u8 qh_state;
#define QH_STATE_LINKED 1 /* HC sees this */
#define QH_STATE_UNLINK 2 /* HC may still see this */
#define QH_STATE_IDLE 3 /* HC doesn't see this */
-#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on reclaim q */
+#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on unlink q */
#define QH_STATE_COMPLETING 5 /* don't touch token.HALT */
u8 xacterrs; /* XactErr retry counter */
/* first field matches ehci_hq, but is NULL */
struct ehci_qh_hw *hw;
- u32 refcount;
u8 bEndpointAddress;
u8 highspeed;
struct list_head td_list; /* queued itds/sitds */
static int fhci_dfs_regs_show(struct seq_file *s, void *v)
{
struct fhci_hcd *fhci = s->private;
- struct fhci_regs __iomem *regs = fhci->regs;
+ struct qe_usb_ctlr __iomem *regs = fhci->regs;
seq_printf(s,
"mode: 0x%x\n" "addr: 0x%x\n"
"status: 0x%x\n" "SOF timer: %d\n"
"frame number: %d\n"
"lines status: 0x%x\n",
- in_8(®s->usb_mod), in_8(®s->usb_addr),
- in_8(®s->usb_comm), in_be16(®s->usb_ep[0]),
- in_be16(®s->usb_event), in_be16(®s->usb_mask),
- in_8(®s->usb_status), in_be16(®s->usb_sof_tmr),
- in_be16(®s->usb_frame_num),
+ in_8(®s->usb_usmod), in_8(®s->usb_usadr),
+ in_8(®s->usb_uscom), in_be16(®s->usb_usep[0]),
+ in_be16(®s->usb_usber), in_be16(®s->usb_usbmr),
+ in_8(®s->usb_usbs), in_be16(®s->usb_ussft),
+ in_be16(®s->usb_usfrn),
fhci_ioports_check_bus_state(fhci));
return 0;
/* clear frame_n */
out_be16(&fhci->pram->frame_num, 0);
- out_be16(&fhci->regs->usb_sof_tmr, 0);
- setbits8(&fhci->regs->usb_mod, USB_MODE_SFTE);
+ out_be16(&fhci->regs->usb_ussft, 0);
+ setbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE);
fhci_dbg(fhci, "<- %s\n", __func__);
}
{
fhci_dbg(fhci, "-> %s\n", __func__);
- clrbits8(&fhci->regs->usb_mod, USB_MODE_SFTE);
+ clrbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE);
gtm_stop_timer16(fhci->timer);
fhci_dbg(fhci, "<- %s\n", __func__);
u16 fhci_get_sof_timer_count(struct fhci_usb *usb)
{
- return be16_to_cpu(in_be16(&usb->fhci->regs->usb_sof_tmr) / 12);
+ return be16_to_cpu(in_be16(&usb->fhci->regs->usb_ussft) / 12);
}
/* initialize the endpoint zero */
enable_irq(fhci_to_hcd(fhci)->irq);
/* initialize the event register and mask register */
- out_be16(&usb->fhci->regs->usb_event, 0xffff);
- out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
+ out_be16(&usb->fhci->regs->usb_usber, 0xffff);
+ out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
/* enable the timer interrupts */
enable_irq(fhci->timer->irq);
/* disable the usb interrupt */
disable_irq_nosync(fhci_to_hcd(fhci)->irq);
- out_be16(&usb->fhci->regs->usb_mask, 0);
+ out_be16(&usb->fhci->regs->usb_usbmr, 0);
}
usb->intr_nesting_cnt++;
}
{
struct fhci_usb *usb = fhci->usb_lld;
- out_be16(&usb->fhci->regs->usb_event, 0xffff);
- out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
- setbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
+ out_be16(&usb->fhci->regs->usb_usber, 0xffff);
+ out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
+ setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);
mdelay(100);
usb->port_status == FHCI_PORT_LOW)
fhci_device_disconnected_interrupt(fhci);
- clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
+ clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);
return 0;
}
USB_E_IDLE_MASK |
USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK);
- out_8(&usb->fhci->regs->usb_mod, USB_MODE_HOST | USB_MODE_EN);
+ out_8(&usb->fhci->regs->usb_usmod, USB_MODE_HOST | USB_MODE_EN);
/* clearing the mask register */
- out_be16(&usb->fhci->regs->usb_mask, 0);
+ out_be16(&usb->fhci->regs->usb_usbmr, 0);
/* initialing the event register */
- out_be16(&usb->fhci->regs->usb_event, 0xffff);
+ out_be16(&usb->fhci->regs->usb_usber, 0xffff);
if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) {
fhci_usb_free(usb);
}
/* Clear and disable any pending interrupts. */
- out_be16(&fhci->regs->usb_event, 0xffff);
- out_be16(&fhci->regs->usb_mask, 0);
+ out_be16(&fhci->regs->usb_usber, 0xffff);
+ out_be16(&fhci->regs->usb_usbmr, 0);
ret = usb_add_hcd(hcd, usb_irq, 0);
if (ret < 0)
/* Enable IDLE since we want to know if something comes along */
usb->saved_msk |= USB_E_IDLE_MASK;
- out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
+ out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
/* check if during the disconnection process attached new device */
if (port_status == FHCI_PORT_WAITING)
fhci_stop_sof_timer(fhci);
/* disable the USB controller */
- mode = in_8(&fhci->regs->usb_mod);
- out_8(&fhci->regs->usb_mod, mode & (~USB_MODE_EN));
+ mode = in_8(&fhci->regs->usb_usmod);
+ out_8(&fhci->regs->usb_usmod, mode & (~USB_MODE_EN));
/* disable idle interrupts */
- mask = in_be16(&fhci->regs->usb_mask);
- out_be16(&fhci->regs->usb_mask, mask & (~USB_E_IDLE_MASK));
+ mask = in_be16(&fhci->regs->usb_usbmr);
+ out_be16(&fhci->regs->usb_usbmr, mask & (~USB_E_IDLE_MASK));
fhci_io_port_generate_reset(fhci);
/* enable interrupt on this endpoint */
- out_be16(&fhci->regs->usb_mask, mask);
+ out_be16(&fhci->regs->usb_usbmr, mask);
/* enable the USB controller */
- mode = in_8(&fhci->regs->usb_mod);
- out_8(&fhci->regs->usb_mod, mode | USB_MODE_EN);
+ mode = in_8(&fhci->regs->usb_usmod);
+ out_8(&fhci->regs->usb_usmod, mode | USB_MODE_EN);
fhci_start_sof_timer(fhci);
fhci_dbg(fhci, "<- %s\n", __func__);
u8 mode;
struct td *td;
- mode = in_8(&usb->fhci->regs->usb_mod);
- clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
+ mode = in_8(&usb->fhci->regs->usb_usmod);
+ clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);
fhci_flush_bds(usb);
usb->actual_frame->frame_status = FRAME_END_TRANSMISSION;
/* reset the event register */
- out_be16(&usb->fhci->regs->usb_event, 0xffff);
+ out_be16(&usb->fhci->regs->usb_usber, 0xffff);
/* enable the USB controller */
- out_8(&usb->fhci->regs->usb_mod, mode | USB_MODE_EN);
+ out_8(&usb->fhci->regs->usb_usmod, mode | USB_MODE_EN);
}
/*
usb->port_status = FHCI_PORT_FULL;
/* Disable IDLE */
usb->saved_msk &= ~USB_E_IDLE_MASK;
- out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
+ out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
}
gtm_set_exact_timer16(fhci->timer, usb->max_frame_usage, false);
fhci_dbg(fhci, "-> %s\n", __func__);
fhci_usb_disable_interrupt(usb);
- clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS);
+ clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS);
usb->port_status = FHCI_PORT_DISABLED;
fhci_stop_sof_timer(fhci);
/* Enable IDLE since we want to know if something comes along */
usb->saved_msk |= USB_E_IDLE_MASK;
- out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
+ out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_CONNECTION;
usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_CONNECTION;
}
usb->port_status = FHCI_PORT_LOW;
- setbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS);
+ setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS);
usb->vroot_hub->port.wPortStatus |=
(USB_PORT_STAT_LOW_SPEED |
USB_PORT_STAT_CONNECTION);
}
usb->port_status = FHCI_PORT_FULL;
- clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS);
+ clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS);
usb->vroot_hub->port.wPortStatus &=
~USB_PORT_STAT_LOW_SPEED;
usb->vroot_hub->port.wPortStatus |=
/* issue stop Tx command */
qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0);
/* flush Tx FIFOs */
- out_8(&usb->fhci->regs->usb_comm, USB_CMD_FLUSH_FIFO | EP_ZERO);
+ out_8(&usb->fhci->regs->usb_uscom, USB_CMD_FLUSH_FIFO | EP_ZERO);
udelay(1000);
/* reset Tx BDs */
fhci_flush_bds(usb);
usb = fhci->usb_lld;
- usb_er |= in_be16(&usb->fhci->regs->usb_event) &
- in_be16(&usb->fhci->regs->usb_mask);
+ usb_er |= in_be16(&usb->fhci->regs->usb_usber) &
+ in_be16(&usb->fhci->regs->usb_usbmr);
/* clear event bits for next time */
- out_be16(&usb->fhci->regs->usb_event, usb_er);
+ out_be16(&usb->fhci->regs->usb_usber, usb_er);
fhci_dbg_isr(fhci, usb_er);
/* Turn on IDLE since we want to disconnect */
usb->saved_msk |= USB_E_IDLE_MASK;
- out_be16(&usb->fhci->regs->usb_event,
+ out_be16(&usb->fhci->regs->usb_usber,
usb->saved_msk);
} else if (usb->port_status == FHCI_PORT_DISABLED) {
if (fhci_ioports_check_bus_state(fhci) == 1)
/* XXX usb->port_status = FHCI_PORT_WAITING; */
/* Disable IDLE */
usb->saved_msk &= ~USB_E_IDLE_MASK;
- out_be16(&usb->fhci->regs->usb_mask,
+ out_be16(&usb->fhci->regs->usb_usbmr,
usb->saved_msk);
} else {
fhci_dbg_isr(fhci, -1);
u8 rt;
/* set the endpoint registers according to the endpoint */
- out_be16(&usb->fhci->regs->usb_ep[0],
+ out_be16(&usb->fhci->regs->usb_usep[0],
USB_TRANS_CTR | USB_EP_MF | USB_EP_RTE);
out_be16(&usb->fhci->pram->ep_ptr[0],
cpm_muram_offset(ep->ep_pram_ptr));
cq_put(&ep->conf_frame_Q, pkt);
if (cq_howmany(&ep->conf_frame_Q) == 1)
- out_8(&usb->fhci->regs->usb_comm, USB_CMD_STR_FIFO);
+ out_8(&usb->fhci->regs->usb_uscom, USB_CMD_STR_FIFO);
return 0;
}
struct endpoint *ep = usb->ep0;
/* disable the USB controller */
- mode = in_8(&usb->fhci->regs->usb_mod);
- out_8(&usb->fhci->regs->usb_mod, mode & ~USB_MODE_EN);
+ mode = in_8(&usb->fhci->regs->usb_usmod);
+ out_8(&usb->fhci->regs->usb_usmod, mode & ~USB_MODE_EN);
tb_ptr = in_be16(&ep->ep_pram_ptr->tx_bd_ptr);
td = cpm_muram_addr(tb_ptr);
usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION;
/* reset the event register */
- out_be16(&usb->fhci->regs->usb_event, 0xffff);
+ out_be16(&usb->fhci->regs->usb_usber, 0xffff);
/* enable the USB controller */
- out_8(&usb->fhci->regs->usb_mod, mode | USB_MODE_EN);
+ out_8(&usb->fhci->regs->usb_usmod, mode | USB_MODE_EN);
}
/* handles Tx confirm and Tx error interrupt */
/* start transmit only if we have something in the TDs */
if (in_be16(&td->status) & TD_R)
- out_8(&usb->fhci->regs->usb_comm, USB_CMD_STR_FIFO);
+ out_8(&usb->fhci->regs->usb_uscom, USB_CMD_STR_FIFO);
if (in_be32(&ep->conf_td->buf_ptr) == DUMMY_BD_BUFFER) {
out_be32(&old_td->buf_ptr, 0);
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <asm/qe.h>
+#include <asm/immap_qe.h>
#define USB_CLOCK 48000000
#define USB_E_TXB_MASK 0x0002
#define USB_E_RXB_MASK 0x0001
-/* Freescale USB Host controller registers */
-struct fhci_regs {
- u8 usb_mod; /* mode register */
- u8 usb_addr; /* address register */
- u8 usb_comm; /* command register */
- u8 reserved1[1];
- __be16 usb_ep[4]; /* endpoint register */
- u8 reserved2[4];
- __be16 usb_event; /* event register */
- u8 reserved3[2];
- __be16 usb_mask; /* mask register */
- u8 reserved4[1];
- u8 usb_status; /* status register */
- __be16 usb_sof_tmr; /* Start Of Frame timer */
- u8 reserved5[2];
- __be16 usb_frame_num; /* frame number register */
- u8 reserved6[1];
-};
-
/* Freescale USB HOST */
struct fhci_pram {
__be16 ep_ptr[4]; /* Endpoint porter reg */
int gpios[NUM_GPIOS];
bool alow_gpios[NUM_GPIOS];
- struct fhci_regs __iomem *regs; /* I/O memory used to communicate */
+ struct qe_usb_ctlr __iomem *regs; /* I/O memory used to communicate */
struct fhci_pram __iomem *pram; /* Parameter RAM */
struct gtm_timer *timer;
usb_remove_hcd(hcd);
if (res != NULL) {
- clk_disable(imx21->clk);
+ clk_disable_unprepare(imx21->clk);
clk_put(imx21->clk);
iounmap(imx21->regs);
release_mem_region(res->start, resource_size(res));
ret = clk_set_rate(imx21->clk, clk_round_rate(imx21->clk, 48000000));
if (ret)
goto failed_clock_set;
- ret = clk_enable(imx21->clk);
+ ret = clk_prepare_enable(imx21->clk);
if (ret)
goto failed_clock_enable;
return 0;
failed_add_hcd:
- clk_disable(imx21->clk);
+ clk_disable_unprepare(imx21->clk);
failed_clock_enable:
failed_clock_set:
clk_put(imx21->clk);
*/
#include <linux/clk.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <mach/ohci.h>
#include <plat/usb-phy.h>
.start_port_reset = ohci_start_port_reset,
};
+static u64 ohci_exynos_dma_mask = DMA_BIT_MASK(32);
+
static int __devinit exynos_ohci_probe(struct platform_device *pdev)
{
struct exynos4_ohci_platdata *pdata;
return -EINVAL;
}
- exynos_ohci = kzalloc(sizeof(struct exynos_ohci_hcd), GFP_KERNEL);
+ /*
+ * Right now device-tree probed devices don't get dma_mask set.
+ * Since shared usb code relies on it, set it here for now.
+ * Once we move to full device tree support this will vanish off.
+ */
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &ohci_exynos_dma_mask;
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+ exynos_ohci = devm_kzalloc(&pdev->dev, sizeof(struct exynos_ohci_hcd),
+ GFP_KERNEL);
if (!exynos_ohci)
return -ENOMEM;
dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
- err = -ENOMEM;
- goto fail_hcd;
+ return -ENOMEM;
}
exynos_ohci->hcd = hcd;
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
- hcd->regs = ioremap(res->start, resource_size(res));
+ hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
- goto fail;
+ goto fail_io;
}
if (pdata->phy_init)
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
- goto fail;
+ goto fail_io;
}
platform_set_drvdata(pdev, exynos_ohci);
return 0;
-fail:
- iounmap(hcd->regs);
fail_io:
clk_disable(exynos_ohci->clk);
fail_clken:
clk_put(exynos_ohci->clk);
fail_clk:
usb_put_hcd(hcd);
-fail_hcd:
- kfree(exynos_ohci);
return err;
}
if (pdata && pdata->phy_exit)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
- iounmap(hcd->regs);
-
clk_disable(exynos_ohci->clk);
clk_put(exynos_ohci->clk);
usb_put_hcd(hcd);
- kfree(exynos_ohci);
return 0;
}
if (pdata && pdata->phy_exit)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+
+ clk_disable(exynos_ohci->clk);
+
fail:
spin_unlock_irqrestore(&ohci->lock, flags);
struct platform_device *pdev = to_platform_device(dev);
struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+ clk_enable(exynos_ohci->clk);
+
if (pdata && pdata->phy_init)
pdata->phy_init(pdev, S5P_USB_PHY_HOST);
.resume = exynos_ohci_resume,
};
+#ifdef CONFIG_OF
+static const struct of_device_id exynos_ohci_match[] = {
+ { .compatible = "samsung,exynos-ohci" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_ohci_match);
+#endif
+
static struct platform_driver exynos_ohci_driver = {
.probe = exynos_ohci_probe,
.remove = __devexit_p(exynos_ohci_remove),
.name = "exynos-ohci",
.owner = THIS_MODULE,
.pm = &exynos_ohci_pm_ops,
+ .of_match_table = of_match_ptr(exynos_ohci_match),
}
};
#define USB_HOST_NEED_CLK_EN (1 << 21)
#define PAD_CONTROL_LAST_DRIVEN (1 << 19)
-#define USB_OTG_CLK_CTRL IO_ADDRESS(USB_CONFIG_BASE + 0xFF4)
-#define USB_OTG_CLK_STAT IO_ADDRESS(USB_CONFIG_BASE + 0xFF8)
-
-/* USB_OTG_CLK_CTRL bit defines */
-#define AHB_M_CLOCK_ON (1 << 4)
-#define OTG_CLOCK_ON (1 << 3)
-#define I2C_CLOCK_ON (1 << 2)
-#define DEV_CLOCK_ON (1 << 1)
-#define HOST_CLOCK_ON (1 << 0)
-
#define USB_OTG_STAT_CONTROL IO_ADDRESS(USB_CONFIG_BASE + 0x110)
/* USB_OTG_STAT_CONTROL bit defines */
extern int usb_disabled(void);
-static struct clk *usb_clk;
+static struct clk *usb_pll_clk;
+static struct clk *usb_dev_clk;
+static struct clk *usb_otg_clk;
static void isp1301_configure_pnx4008(void)
{
.start_port_reset = ohci_start_port_reset,
};
-#define USB_CLOCK_MASK (AHB_M_CLOCK_ON| OTG_CLOCK_ON | HOST_CLOCK_ON | I2C_CLOCK_ON)
-
static void nxp_set_usb_bits(void)
{
if (machine_is_pnx4008()) {
/* Enable AHB slave USB clock, needed for further USB clock control */
__raw_writel(USB_SLAVE_HCLK_EN | PAD_CONTROL_LAST_DRIVEN, USB_CTRL);
- isp1301_configure();
-
/* Enable USB PLL */
- usb_clk = clk_get(&pdev->dev, "ck_pll5");
- if (IS_ERR(usb_clk)) {
+ usb_pll_clk = clk_get(&pdev->dev, "ck_pll5");
+ if (IS_ERR(usb_pll_clk)) {
dev_err(&pdev->dev, "failed to acquire USB PLL\n");
- ret = PTR_ERR(usb_clk);
+ ret = PTR_ERR(usb_pll_clk);
goto out1;
}
- ret = clk_enable(usb_clk);
+ ret = clk_enable(usb_pll_clk);
if (ret < 0) {
dev_err(&pdev->dev, "failed to start USB PLL\n");
goto out2;
}
- ret = clk_set_rate(usb_clk, 48000);
+ ret = clk_set_rate(usb_pll_clk, 48000);
if (ret < 0) {
dev_err(&pdev->dev, "failed to set USB clock rate\n");
goto out3;
}
+ /* Enable USB device clock */
+ usb_dev_clk = clk_get(&pdev->dev, "ck_usbd");
+ if (IS_ERR(usb_dev_clk)) {
+ dev_err(&pdev->dev, "failed to acquire USB DEV Clock\n");
+ ret = PTR_ERR(usb_dev_clk);
+ goto out4;
+ }
+
+ ret = clk_enable(usb_dev_clk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
+ goto out5;
+ }
+
+ /* Enable USB otg clocks */
+ usb_otg_clk = clk_get(&pdev->dev, "ck_usb_otg");
+ if (IS_ERR(usb_otg_clk)) {
+ dev_err(&pdev->dev, "failed to acquire USB DEV Clock\n");
+ ret = PTR_ERR(usb_dev_clk);
+ goto out6;
+ }
+
__raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
- /* Set to enable all needed USB clocks */
- __raw_writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL);
+ ret = clk_enable(usb_otg_clk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
+ goto out7;
+ }
- while ((__raw_readl(USB_OTG_CLK_STAT) & USB_CLOCK_MASK) !=
- USB_CLOCK_MASK) ;
+ isp1301_configure();
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Failed to allocate HC buffer\n");
ret = -ENOMEM;
- goto out3;
+ goto out8;
}
/* Set all USB bits in the Start Enable register */
if (!res) {
dev_err(&pdev->dev, "Failed to get MEM resource\n");
ret = -ENOMEM;
- goto out4;
+ goto out8;
}
hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to devm_request_and_ioremap\n");
ret = -ENOMEM;
- goto out4;
+ goto out8;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
ret = -ENXIO;
- goto out4;
+ goto out8;
}
nxp_start_hc();
return ret;
nxp_stop_hc();
-out4:
+out8:
nxp_unset_usb_bits();
usb_put_hcd(hcd);
+out7:
+ clk_disable(usb_otg_clk);
+out6:
+ clk_put(usb_otg_clk);
+out5:
+ clk_disable(usb_dev_clk);
+out4:
+ clk_put(usb_dev_clk);
out3:
- clk_disable(usb_clk);
+ clk_disable(usb_pll_clk);
out2:
- clk_put(usb_clk);
+ clk_put(usb_pll_clk);
out1:
isp1301_i2c_client = NULL;
out:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
nxp_unset_usb_bits();
- clk_disable(usb_clk);
- clk_put(usb_clk);
+ clk_disable(usb_pll_clk);
+ clk_put(usb_pll_clk);
+ clk_disable(usb_dev_clk);
+ clk_put(usb_dev_clk);
i2c_unregister_device(isp1301_i2c_client);
isp1301_i2c_client = NULL;
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/gpio.h>
#include <asm/io.h>
static void start_hnp(struct ohci_hcd *ohci)
{
- const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1;
+ struct usb_hcd *hcd = ohci_to_hcd(ohci);
+ const unsigned port = hcd->self.otg_port - 1;
unsigned long flags;
u32 l;
- otg_start_hnp(ohci->transceiver->otg);
+ otg_start_hnp(hcd->phy->otg);
local_irq_save(flags);
- ohci->transceiver->state = OTG_STATE_A_SUSPEND;
+ hcd->phy->state = OTG_STATE_A_SUSPEND;
writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
l = omap_readl(OTG_CTRL);
l &= ~OTG_A_BUSREQ;
#ifdef CONFIG_USB_OTG
if (need_transceiver) {
- ohci->transceiver = usb_get_transceiver();
- if (ohci->transceiver) {
- int status = otg_set_host(ohci->transceiver->otg,
+ hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (!IS_ERR_OR_NULL(hcd->phy)) {
+ int status = otg_set_host(hcd->phy->otg,
&ohci_to_hcd(ohci)->self);
- dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n",
- ohci->transceiver->label, status);
+ dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
+ hcd->phy->label, status);
if (status) {
- usb_put_transceiver(ohci->transceiver);
+ usb_put_phy(hcd->phy);
return status;
}
} else {
- dev_err(hcd->self.controller, "can't find transceiver\n");
+ dev_err(hcd->self.controller, "can't find phy\n");
return -ENODEV;
}
ohci->start_hnp = start_hnp;
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
usb_remove_hcd(hcd);
- if (ohci->transceiver) {
- (void) otg_set_host(ohci->transceiver->otg, 0);
- usb_put_transceiver(ohci->transceiver);
+ if (!IS_ERR_OR_NULL(hcd->phy)) {
+ (void) otg_set_host(hcd->phy->otg, 0);
+ usb_put_phy(hcd->phy);
}
if (machine_is_omap_osk())
gpio_free(9);
struct ed *ed_controltail; /* last in ctrl list */
struct ed *periodic [NUM_INTS]; /* shadow int_table */
- /*
- * OTG controllers and transceivers need software interaction;
- * other external transceivers should be software-transparent
- */
- struct usb_phy *transceiver;
void (*start_hnp)(struct ohci_hcd *ohci);
/*
if (hcd->speed != HCD_USB3)
goto error;
+ /* Set the U1 and U2 exit latencies. */
memcpy(buf, &usb_bos_descriptor,
USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE);
temp = xhci_readl(xhci, &xhci->cap_regs->hcs_params3);
buf[12] = HCS_U1_LATENCY(temp);
put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
+ /* Indicate whether the host has LTM support. */
+ temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
+ if (HCC_LTC(temp))
+ buf[8] |= USB_LTM_SUPPORT;
+
spin_unlock_irqrestore(&xhci->lock, flags);
return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
case GetPortStatus:
/* Accept arbitrarily long scatter-gather lists */
hcd->self.sg_tablesize = ~0;
+ /* XHCI controllers don't stop the ep queue on short packets :| */
+ hcd->self.no_stop_on_short = 1;
if (usb_hcd_is_primary_hcd(hcd)) {
xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);
#include <linux/init.h>
#include <linux/module.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
return -ENODEV;
usb_nop_xceiv_register();
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv)
+ musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv))
return -ENODEV;
if (is_host_enabled(musb))
if (data->set_phy_power)
data->set_phy_power(0);
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
return 0;
#include <linux/list.h>
#include <linux/gpio.h>
#include <linux/io.h>
+#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/prefetch.h>
gpio_direction_output(musb->config->gpio_vrsel, 0);
usb_nop_xceiv_register();
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv) {
+ musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv)) {
gpio_free(musb->config->gpio_vrsel);
return -ENODEV;
}
{
gpio_free(musb->config->gpio_vrsel);
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
return 0;
}
#include <linux/init.h>
#include <linux/module.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
goto fail;
usb_nop_xceiv_register();
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv)
+ musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv))
goto fail;
if (is_host_enabled(musb))
phy_off();
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
return 0;
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
u32 revision;
usb_nop_xceiv_register();
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv)
+ musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv))
goto unregister;
musb->mregs += DAVINCI_BASE_OFFSET;
return 0;
fail:
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
unregister:
usb_nop_xceiv_unregister();
return -ENODEV;
phy_off();
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
return 0;
/* The musb_platform_init() call:
* - adjusts musb->mregs and musb->isr if needed,
* - may initialize an integrated tranceiver
- * - initializes musb->xceiv, usually by otg_get_transceiver()
+ * - initializes musb->xceiv, usually by otg_get_phy()
* - stops powering VBUS
*
* There are various transceiver configurations. Blackfin,
irqreturn_t (*isr)(int, void *);
struct work_struct irq_work;
- struct work_struct otg_notifier_work;
u16 hwvers;
/* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
u16 int_tx;
struct usb_phy *xceiv;
- u8 xceiv_event;
int nIrq;
unsigned irq_wake:1;
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
/* NOP driver needs change if supporting dual instance */
usb_nop_xceiv_register();
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv)
+ musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv))
return -ENODEV;
/* Returns zero if e.g. not clocked */
return 0;
err0:
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
return status;
}
data->set_phy_power(0);
/* NOP driver needs change if supporting dual instance */
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
return 0;
musb_ep = req->ep;
+ /* Check if EP is disabled */
+ if (!musb_ep->desc) {
+ dev_dbg(musb->controller, "ep:%s disabled - ignore request\n",
+ musb_ep->end_point.name);
+ return;
+ }
+
/* we shouldn't get here while DMA is active ... but we do ... */
if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) {
dev_dbg(musb->controller, "dma pending...\n");
len = musb_ep->packet_sz;
+ /* Check if EP is disabled */
+ if (!musb_ep->desc) {
+ dev_dbg(musb->controller, "ep:%s disabled - ignore request\n",
+ musb_ep->end_point.name);
+ return;
+ }
+
/* We shouldn't get here while DMA is active, but we do... */
if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) {
dev_dbg(musb->controller, "DMA pending...\n");
c->channel_release(dma);
hw_ep->rx_channel = NULL;
dma = NULL;
- /* REVISIT reset CSR */
+ val = musb_readw(epio, MUSB_RXCSR);
+ val &= ~(MUSB_RXCSR_DMAENAB
+ | MUSB_RXCSR_H_AUTOREQ
+ | MUSB_RXCSR_AUTOCLEAR);
+ musb_writew(epio, MUSB_RXCSR, val);
}
}
#endif /* Mentor DMA */
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/err.h>
+#include <linux/usb/musb-omap.h>
#include "musb_core.h"
#include "omap2430.h"
struct omap2430_glue {
struct device *dev;
struct platform_device *musb;
+ enum omap_musb_vbus_id_status status;
+ struct work_struct omap_musb_mailbox_work;
};
#define glue_to_musb(g) platform_get_drvdata(g->musb)
+struct omap2430_glue *_glue;
+
static struct timer_list musb_idle_timer;
static void musb_do_idle(unsigned long _musb)
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
-static int musb_otg_notifications(struct notifier_block *nb,
- unsigned long event, void *unused)
+void omap_musb_mailbox(enum omap_musb_vbus_id_status status)
{
- struct musb *musb = container_of(nb, struct musb, nb);
+ struct omap2430_glue *glue = _glue;
+ struct musb *musb = glue_to_musb(glue);
- musb->xceiv_event = event;
- schedule_work(&musb->otg_notifier_work);
+ glue->status = status;
+ if (!musb) {
+ dev_err(glue->dev, "musb core is not yet ready\n");
+ return;
+ }
- return NOTIFY_OK;
+ schedule_work(&glue->omap_musb_mailbox_work);
}
+EXPORT_SYMBOL_GPL(omap_musb_mailbox);
-static void musb_otg_notifier_work(struct work_struct *data_notifier_work)
+static void omap_musb_set_mailbox(struct omap2430_glue *glue)
{
- struct musb *musb = container_of(data_notifier_work, struct musb, otg_notifier_work);
+ struct musb *musb = glue_to_musb(glue);
struct device *dev = musb->controller;
struct musb_hdrc_platform_data *pdata = dev->platform_data;
struct omap_musb_board_data *data = pdata->board_data;
+ struct usb_otg *otg = musb->xceiv->otg;
- switch (musb->xceiv_event) {
- case USB_EVENT_ID:
- dev_dbg(musb->controller, "ID GND\n");
+ switch (glue->status) {
+ case OMAP_MUSB_ID_GROUND:
+ dev_dbg(dev, "ID GND\n");
+ otg->default_a = true;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
+ musb->xceiv->last_event = USB_EVENT_ID;
if (!is_otg_enabled(musb) || musb->gadget_driver) {
- pm_runtime_get_sync(musb->controller);
+ pm_runtime_get_sync(dev);
usb_phy_init(musb->xceiv);
omap2430_musb_set_vbus(musb, 1);
}
break;
- case USB_EVENT_VBUS:
- dev_dbg(musb->controller, "VBUS Connect\n");
+ case OMAP_MUSB_VBUS_VALID:
+ dev_dbg(dev, "VBUS Connect\n");
+ otg->default_a = false;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
+ musb->xceiv->last_event = USB_EVENT_VBUS;
if (musb->gadget_driver)
- pm_runtime_get_sync(musb->controller);
+ pm_runtime_get_sync(dev);
usb_phy_init(musb->xceiv);
break;
- case USB_EVENT_NONE:
- dev_dbg(musb->controller, "VBUS Disconnect\n");
+ case OMAP_MUSB_ID_FLOAT:
+ case OMAP_MUSB_VBUS_OFF:
+ dev_dbg(dev, "VBUS Disconnect\n");
+ musb->xceiv->last_event = USB_EVENT_NONE;
if (is_otg_enabled(musb) || is_peripheral_enabled(musb))
if (musb->gadget_driver) {
- pm_runtime_mark_last_busy(musb->controller);
- pm_runtime_put_autosuspend(musb->controller);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
}
if (data->interface_type == MUSB_INTERFACE_UTMI) {
usb_phy_shutdown(musb->xceiv);
break;
default:
- dev_dbg(musb->controller, "ID float\n");
+ dev_dbg(dev, "ID float\n");
}
}
+
+static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
+{
+ struct omap2430_glue *glue = container_of(mailbox_work,
+ struct omap2430_glue, omap_musb_mailbox_work);
+ omap_musb_set_mailbox(glue);
+}
+
static int omap2430_musb_init(struct musb *musb)
{
u32 l;
int status = 0;
struct device *dev = musb->controller;
+ struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
struct musb_hdrc_platform_data *plat = dev->platform_data;
struct omap_musb_board_data *data = plat->board_data;
* up through ULPI. TWL4030-family PMICs include one,
* which needs a driver, drivers aren't always needed.
*/
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv) {
+ musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv)) {
pr_err("HS USB OTG: no transceiver configured\n");
return -ENODEV;
}
- INIT_WORK(&musb->otg_notifier_work, musb_otg_notifier_work);
-
status = pm_runtime_get_sync(dev);
if (status < 0) {
dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
musb_readl(musb->mregs, OTG_INTERFSEL),
musb_readl(musb->mregs, OTG_SIMENABLE));
- musb->nb.notifier_call = musb_otg_notifications;
- status = usb_register_notifier(musb->xceiv, &musb->nb);
-
- if (status)
- dev_dbg(musb->controller, "notification register failed\n");
-
setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
+ if (glue->status != OMAP_MUSB_UNKNOWN)
+ omap_musb_set_mailbox(glue);
+
pm_runtime_put_noidle(musb->controller);
return 0;
u8 devctl;
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
struct device *dev = musb->controller;
+ struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
struct musb_hdrc_platform_data *pdata = dev->platform_data;
struct omap_musb_board_data *data = pdata->board_data;
- switch (musb->xceiv->last_event) {
+ switch (glue->status) {
- case USB_EVENT_ID:
+ case OMAP_MUSB_ID_GROUND:
usb_phy_init(musb->xceiv);
if (data->interface_type != MUSB_INTERFACE_UTMI)
break;
}
break;
- case USB_EVENT_VBUS:
+ case OMAP_MUSB_VBUS_VALID:
usb_phy_init(musb->xceiv);
break;
static void omap2430_musb_disable(struct musb *musb)
{
- if (musb->xceiv->last_event)
+ struct device *dev = musb->controller;
+ struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
+
+ if (glue->status != OMAP_MUSB_UNKNOWN)
usb_phy_shutdown(musb->xceiv);
}
static int omap2430_musb_exit(struct musb *musb)
{
del_timer_sync(&musb_idle_timer);
- cancel_work_sync(&musb->otg_notifier_work);
omap2430_low_level_exit(musb);
- usb_put_transceiver(musb->xceiv);
return 0;
}
struct omap2430_glue *glue;
int ret = -ENOMEM;
- glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+ glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
if (!glue) {
dev_err(&pdev->dev, "failed to allocate glue context\n");
goto err0;
musb = platform_device_alloc("musb-hdrc", -1);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err1;
+ goto err0;
}
musb->dev.parent = &pdev->dev;
glue->dev = &pdev->dev;
glue->musb = musb;
+ glue->status = OMAP_MUSB_UNKNOWN;
pdata->platform_ops = &omap2430_ops;
platform_set_drvdata(pdev, glue);
+ /*
+ * REVISIT if we ever have two instances of the wrapper, we will be
+ * in big trouble
+ */
+ _glue = glue;
+
+ INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
+
ret = platform_device_add_resources(musb, pdev->resource,
pdev->num_resources);
if (ret) {
dev_err(&pdev->dev, "failed to add resources\n");
- goto err2;
+ goto err1;
}
ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
if (ret) {
dev_err(&pdev->dev, "failed to add platform_data\n");
- goto err2;
+ goto err1;
}
pm_runtime_enable(&pdev->dev);
ret = platform_device_add(musb);
if (ret) {
dev_err(&pdev->dev, "failed to register musb device\n");
- goto err2;
+ goto err1;
}
return 0;
-err2:
- platform_device_put(musb);
-
err1:
- kfree(glue);
+ platform_device_put(musb);
err0:
return ret;
{
struct omap2430_glue *glue = platform_get_drvdata(pdev);
+ cancel_work_sync(&glue->omap_musb_mailbox_work);
platform_device_del(glue->musb);
platform_device_put(glue->musb);
- kfree(glue);
return 0;
}
{
return platform_driver_register(&omap2430_driver);
}
-module_init(omap2430_init);
+subsys_initcall(omap2430_init);
static void __exit omap2430_exit(void)
{
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/init.h>
#include <linux/prefetch.h>
#include <linux/usb.h>
int ret;
usb_nop_xceiv_register();
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv)
+ musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv))
return -ENODEV;
pdev = to_platform_device(musb->controller);
if (sync)
iounmap(sync);
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
}
return ret;
iounmap(musb->sync_va);
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
usb_nop_xceiv_unregister();
return 0;
}
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
static int ux500_musb_init(struct musb *musb)
{
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv) {
+ musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv)) {
pr_err("HS USB OTG: no transceiver configured\n");
return -ENODEV;
}
static int ux500_musb_exit(struct musb *musb)
{
- usb_put_transceiver(musb->xceiv);
+ usb_put_phy(musb->xceiv);
return 0;
}
help
Enable this to support Freescale USB OTG transceiver.
+config USB_MXS_PHY
+ tristate "Freescale MXS USB PHY support"
+ depends on ARCH_MXC || ARCH_MXS
+ select STMP_DEVICE
+ select USB_OTG_UTILS
+ help
+ Enable this to support the Freescale MXS USB PHY.
+
+ MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x.
+
config USB_MV_OTG
tristate "Marvell USB OTG support"
depends on USB_EHCI_MV && USB_MV_UDC && USB_SUSPEND
obj-$(CONFIG_AB8500_USB) += ab8500-usb.o
fsl_usb2_otg-objs := fsl_otg.o otg_fsm.o
obj-$(CONFIG_FSL_USB2_OTG) += fsl_usb2_otg.o
+obj-$(CONFIG_USB_MXS_PHY) += mxs-phy.o
obj-$(CONFIG_USB_MV_OTG) += mv_otg.o
if (err < 0)
goto fail0;
- err = usb_set_transceiver(&ab->phy);
+ err = usb_add_phy(&ab->phy, USB_PHY_TYPE_USB2);
if (err) {
dev_err(&pdev->dev, "Can't register transceiver\n");
goto fail1;
cancel_work_sync(&ab->phy_dis_work);
- usb_set_transceiver(NULL);
+ usb_remove_phy(&ab->phy);
ab8500_usb_host_phy_dis(ab);
ab8500_usb_peri_phy_dis(ab);
fsl_otg_dev = fsl_otg_tc;
/* Store the otg transceiver */
- status = usb_set_transceiver(&fsl_otg_tc->phy);
+ status = usb_add_phy(&fsl_otg_tc->phy, USB_PHY_TYPE_USB2);
if (status) {
pr_warn(FSL_OTG_NAME ": unable to register OTG transceiver.\n");
goto err;
int usb_otg_start(struct platform_device *pdev)
{
struct fsl_otg *p_otg;
- struct usb_phy *otg_trans = usb_get_transceiver();
+ struct usb_phy *otg_trans = usb_get_phy(USB_PHY_TYPE_USB2);
struct otg_fsm *fsm;
int status;
struct resource *res;
{
struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
- usb_set_transceiver(NULL);
+ usb_remove_phy(&fsl_otg_dev->phy);
free_irq(fsl_otg_dev->irq, fsl_otg_dev);
iounmap((void *)usb_dr_regs);
}
/* only active when a gadget is registered */
- err = usb_set_transceiver(&gpio_vbus->phy);
+ err = usb_add_phy(&gpio_vbus->phy, USB_PHY_TYPE_USB2);
if (err) {
dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
err);
cancel_delayed_work_sync(&gpio_vbus->work);
regulator_put(gpio_vbus->vbus_draw);
- usb_set_transceiver(NULL);
+ usb_remove_phy(&gpio_vbus->phy);
free_irq(gpio_vbus->irq, pdev);
if (gpio_is_valid(pdata->gpio_pullup))
isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
{
struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy);
-#ifndef CONFIG_USB_OTG
- u32 l;
-#endif
if (!otg || isp != the_transceiver)
return -ENODEV;
otg->gadget = gadget;
// FIXME update its refcount
- l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK;
- l &= ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS);
- l |= OTG_ID;
- omap_writel(l, OTG_CTRL);
+ {
+ u32 l;
+
+ l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK;
+ l &= ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS);
+ l |= OTG_ID;
+ omap_writel(l, OTG_CTRL);
+ }
power_up(isp);
isp->phy.state = OTG_STATE_B_IDLE;
dev_dbg(&i2c->dev, "scheduled timer, %d min\n", TIMER_MINUTES);
#endif
- status = usb_set_transceiver(&isp->phy);
+ status = usb_add_phy(&isp->phy, USB_PHY_TYPE_USB2);
if (status < 0)
dev_err(&i2c->dev, "can't register transceiver, %d\n",
status);
static void __exit isp_exit(void)
{
if (the_transceiver)
- usb_set_transceiver(NULL);
+ usb_remove_phy(&the_transceiver->phy);
i2c_del_driver(&isp1301_driver);
}
module_exit(isp_exit);
phy->otg->set_host = msm_otg_set_host;
phy->otg->set_peripheral = msm_otg_set_peripheral;
- ret = usb_set_transceiver(&motg->phy);
+ ret = usb_add_phy(&motg->phy, USB_PHY_TYPE_USB2);
if (ret) {
- dev_err(&pdev->dev, "usb_set_transceiver failed\n");
+ dev_err(&pdev->dev, "usb_add_phy failed\n");
goto free_irq;
}
device_init_wakeup(&pdev->dev, 0);
pm_runtime_disable(&pdev->dev);
- usb_set_transceiver(NULL);
+ usb_remove_phy(phy);
free_irq(motg->irq, motg);
/*
for (clk_i = 0; clk_i <= mvotg->clknum; clk_i++)
clk_put(mvotg->clk[clk_i]);
- usb_set_transceiver(NULL);
+ usb_remove_phy(&mvotg->phy);
platform_set_drvdata(pdev, NULL);
kfree(mvotg->phy.otg);
goto err_disable_clk;
}
- retval = usb_set_transceiver(&mvotg->phy);
+ retval = usb_add_phy(&mvotg->phy, USB_PHY_TYPE_USB2);
if (retval < 0) {
dev_err(&pdev->dev, "can't register transceiver, %d\n",
retval);
return 0;
err_set_transceiver:
- usb_set_transceiver(NULL);
+ usb_remove_phy(&mvotg->phy);
err_free_irq:
free_irq(mvotg->irq, mvotg);
err_disable_clk:
--- /dev/null
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Marek Vasut <marex@denx.de>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/usb/otg.h>
+#include <linux/stmp_device.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#define DRIVER_NAME "mxs_phy"
+
+#define HW_USBPHY_PWD 0x00
+#define HW_USBPHY_CTRL 0x30
+#define HW_USBPHY_CTRL_SET 0x34
+#define HW_USBPHY_CTRL_CLR 0x38
+
+#define BM_USBPHY_CTRL_SFTRST BIT(31)
+#define BM_USBPHY_CTRL_CLKGATE BIT(30)
+#define BM_USBPHY_CTRL_ENUTMILEVEL3 BIT(15)
+#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14)
+#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1)
+
+struct mxs_phy {
+ struct usb_phy phy;
+ struct clk *clk;
+};
+
+#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
+
+static void mxs_phy_hw_init(struct mxs_phy *mxs_phy)
+{
+ void __iomem *base = mxs_phy->phy.io_priv;
+
+ stmp_reset_block(base + HW_USBPHY_CTRL);
+
+ /* Power up the PHY */
+ writel_relaxed(0, base + HW_USBPHY_PWD);
+
+ /* enable FS/LS device */
+ writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 |
+ BM_USBPHY_CTRL_ENUTMILEVEL3,
+ base + HW_USBPHY_CTRL_SET);
+}
+
+static int mxs_phy_init(struct usb_phy *phy)
+{
+ struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+ clk_prepare_enable(mxs_phy->clk);
+ mxs_phy_hw_init(mxs_phy);
+
+ return 0;
+}
+
+static void mxs_phy_shutdown(struct usb_phy *phy)
+{
+ struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+ writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+ phy->io_priv + HW_USBPHY_CTRL_SET);
+
+ clk_disable_unprepare(mxs_phy->clk);
+}
+
+static int mxs_phy_on_connect(struct usb_phy *phy, int port)
+{
+ dev_dbg(phy->dev, "Connect on port %d\n", port);
+
+ mxs_phy_hw_init(to_mxs_phy(phy));
+ writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+ phy->io_priv + HW_USBPHY_CTRL_SET);
+
+ return 0;
+}
+
+static int mxs_phy_on_disconnect(struct usb_phy *phy, int port)
+{
+ dev_dbg(phy->dev, "Disconnect on port %d\n", port);
+
+ writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+ phy->io_priv + HW_USBPHY_CTRL_CLR);
+
+ return 0;
+}
+
+static int mxs_phy_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ void __iomem *base;
+ struct clk *clk;
+ struct mxs_phy *mxs_phy;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "can't get device resources\n");
+ return -ENOENT;
+ }
+
+ base = devm_request_and_ioremap(&pdev->dev, res);
+ if (!base)
+ return -EBUSY;
+
+ clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(clk)) {
+ dev_err(&pdev->dev,
+ "can't get the clock, err=%ld", PTR_ERR(clk));
+ return PTR_ERR(clk);
+ }
+
+ mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL);
+ if (!mxs_phy) {
+ dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n");
+ return -ENOMEM;
+ }
+
+ mxs_phy->phy.io_priv = base;
+ mxs_phy->phy.dev = &pdev->dev;
+ mxs_phy->phy.label = DRIVER_NAME;
+ mxs_phy->phy.init = mxs_phy_init;
+ mxs_phy->phy.shutdown = mxs_phy_shutdown;
+ mxs_phy->phy.notify_connect = mxs_phy_on_connect;
+ mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect;
+
+ ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier);
+
+ mxs_phy->clk = clk;
+
+ platform_set_drvdata(pdev, &mxs_phy->phy);
+
+ return 0;
+}
+
+static int __devexit mxs_phy_remove(struct platform_device *pdev)
+{
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static const struct of_device_id mxs_phy_dt_ids[] = {
+ { .compatible = "fsl,imx23-usbphy", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
+
+static struct platform_driver mxs_phy_driver = {
+ .probe = mxs_phy_probe,
+ .remove = __devexit_p(mxs_phy_remove),
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = mxs_phy_dt_ids,
+ },
+};
+
+static int __init mxs_phy_module_init(void)
+{
+ return platform_driver_register(&mxs_phy_driver);
+}
+postcore_initcall(mxs_phy_module_init);
+
+static void __exit mxs_phy_module_exit(void)
+{
+ platform_driver_unregister(&mxs_phy_driver);
+}
+module_exit(mxs_phy_module_exit);
+
+MODULE_ALIAS("platform:mxs-usb-phy");
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
+MODULE_DESCRIPTION("Freescale MXS USB PHY driver");
+MODULE_LICENSE("GPL");
nop->phy.otg->set_host = nop_set_host;
nop->phy.otg->set_peripheral = nop_set_peripheral;
- err = usb_set_transceiver(&nop->phy);
+ err = usb_add_phy(&nop->phy, USB_PHY_TYPE_USB2);
if (err) {
dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
err);
{
struct nop_usb_xceiv *nop = platform_get_drvdata(pdev);
- usb_set_transceiver(NULL);
+ usb_remove_phy(&nop->phy);
platform_set_drvdata(pdev, NULL);
kfree(nop->phy.otg);
#include <linux/kernel.h>
#include <linux/export.h>
+#include <linux/err.h>
#include <linux/device.h>
+#include <linux/slab.h>
#include <linux/usb/otg.h>
-static struct usb_phy *phy;
+static LIST_HEAD(phy_list);
+static DEFINE_SPINLOCK(phy_lock);
+
+static struct usb_phy *__usb_find_phy(struct list_head *list,
+ enum usb_phy_type type)
+{
+ struct usb_phy *phy = NULL;
+
+ list_for_each_entry(phy, list, head) {
+ if (phy->type != type)
+ continue;
+
+ return phy;
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+
+static void devm_usb_phy_release(struct device *dev, void *res)
+{
+ struct usb_phy *phy = *(struct usb_phy **)res;
+
+ usb_put_phy(phy);
+}
+
+static int devm_usb_phy_match(struct device *dev, void *res, void *match_data)
+{
+ return res == match_data;
+}
/**
- * usb_get_transceiver - find the (single) USB transceiver
+ * devm_usb_get_phy - find the USB PHY
+ * @dev - device that requests this phy
+ * @type - the type of the phy the controller requires
*
- * Returns the transceiver driver, after getting a refcount to it; or
- * null if there is no such transceiver. The caller is responsible for
- * calling usb_put_transceiver() to release that count.
+ * Gets the phy using usb_get_phy(), and associates a device with it using
+ * devres. On driver detach, release function is invoked on the devres data,
+ * then, devres data is freed.
*
* For use by USB host and peripheral drivers.
*/
-struct usb_phy *usb_get_transceiver(void)
+struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type)
{
- if (phy)
- get_device(phy->dev);
+ struct usb_phy **ptr, *phy;
+
+ ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return NULL;
+
+ phy = usb_get_phy(type);
+ if (!IS_ERR(phy)) {
+ *ptr = phy;
+ devres_add(dev, ptr);
+ } else
+ devres_free(ptr);
+
+ return phy;
+}
+EXPORT_SYMBOL(devm_usb_get_phy);
+
+/**
+ * usb_get_phy - find the USB PHY
+ * @type - the type of the phy the controller requires
+ *
+ * Returns the phy driver, after getting a refcount to it; or
+ * -ENODEV if there is no such phy. The caller is responsible for
+ * calling usb_put_phy() to release that count.
+ *
+ * For use by USB host and peripheral drivers.
+ */
+struct usb_phy *usb_get_phy(enum usb_phy_type type)
+{
+ struct usb_phy *phy = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&phy_lock, flags);
+
+ phy = __usb_find_phy(&phy_list, type);
+ if (IS_ERR(phy)) {
+ pr_err("unable to find transceiver of type %s\n",
+ usb_phy_type_string(type));
+ goto err0;
+ }
+
+ get_device(phy->dev);
+
+err0:
+ spin_unlock_irqrestore(&phy_lock, flags);
+
return phy;
}
-EXPORT_SYMBOL(usb_get_transceiver);
+EXPORT_SYMBOL(usb_get_phy);
+
+/**
+ * devm_usb_put_phy - release the USB PHY
+ * @dev - device that wants to release this phy
+ * @phy - the phy returned by devm_usb_get_phy()
+ *
+ * destroys the devres associated with this phy and invokes usb_put_phy
+ * to release the phy.
+ *
+ * For use by USB host and peripheral drivers.
+ */
+void devm_usb_put_phy(struct device *dev, struct usb_phy *phy)
+{
+ int r;
+
+ r = devres_destroy(dev, devm_usb_phy_release, devm_usb_phy_match, phy);
+ dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n");
+}
+EXPORT_SYMBOL(devm_usb_put_phy);
/**
- * usb_put_transceiver - release the (single) USB transceiver
- * @x: the transceiver returned by usb_get_transceiver()
+ * usb_put_phy - release the USB PHY
+ * @x: the phy returned by usb_get_phy()
*
- * Releases a refcount the caller received from usb_get_transceiver().
+ * Releases a refcount the caller received from usb_get_phy().
*
* For use by USB host and peripheral drivers.
*/
-void usb_put_transceiver(struct usb_phy *x)
+void usb_put_phy(struct usb_phy *x)
{
if (x)
put_device(x->dev);
}
-EXPORT_SYMBOL(usb_put_transceiver);
+EXPORT_SYMBOL(usb_put_phy);
/**
- * usb_set_transceiver - declare the (single) USB transceiver
- * @x: the USB transceiver to be used; or NULL
+ * usb_add_phy - declare the USB PHY
+ * @x: the USB phy to be used; or NULL
+ * @type - the type of this PHY
*
- * This call is exclusively for use by transceiver drivers, which
+ * This call is exclusively for use by phy drivers, which
* coordinate the activities of drivers for host and peripheral
* controllers, and in some cases for VBUS current regulation.
*/
-int usb_set_transceiver(struct usb_phy *x)
+int usb_add_phy(struct usb_phy *x, enum usb_phy_type type)
+{
+ int ret = 0;
+ unsigned long flags;
+ struct usb_phy *phy;
+
+ if (x && x->type != USB_PHY_TYPE_UNDEFINED) {
+ dev_err(x->dev, "not accepting initialized PHY %s\n", x->label);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&phy_lock, flags);
+
+ list_for_each_entry(phy, &phy_list, head) {
+ if (phy->type == type) {
+ ret = -EBUSY;
+ dev_err(x->dev, "transceiver type %s already exists\n",
+ usb_phy_type_string(type));
+ goto out;
+ }
+ }
+
+ x->type = type;
+ list_add_tail(&x->head, &phy_list);
+
+out:
+ spin_unlock_irqrestore(&phy_lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL(usb_add_phy);
+
+/**
+ * usb_remove_phy - remove the OTG PHY
+ * @x: the USB OTG PHY to be removed;
+ *
+ * This reverts the effects of usb_add_phy
+ */
+void usb_remove_phy(struct usb_phy *x)
{
- if (phy && x)
- return -EBUSY;
- phy = x;
- return 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&phy_lock, flags);
+ if (x)
+ list_del(&x->head);
+ spin_unlock_irqrestore(&phy_lock, flags);
}
-EXPORT_SYMBOL(usb_set_transceiver);
+EXPORT_SYMBOL(usb_remove_phy);
const char *otg_state_string(enum usb_otg_state state)
{
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/usb/otg.h>
+#include <linux/usb/musb-omap.h>
#include <linux/usb/ulpi.h>
#include <linux/i2c/twl.h>
#include <linux/regulator/consumer.h>
#include <linux/err.h>
-#include <linux/notifier.h>
#include <linux/slab.h>
/* Register defines */
enum twl4030_usb_mode usb_mode;
int irq;
- u8 linkstat;
+ enum omap_musb_vbus_id_status linkstat;
bool vbus_supplied;
u8 asleep;
bool irq_enabled;
/*-------------------------------------------------------------------------*/
-static enum usb_phy_events twl4030_usb_linkstat(struct twl4030_usb *twl)
+static enum omap_musb_vbus_id_status
+ twl4030_usb_linkstat(struct twl4030_usb *twl)
{
int status;
- int linkstat = USB_EVENT_NONE;
- struct usb_otg *otg = twl->phy.otg;
+ enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN;
twl->vbus_supplied = false;
twl->vbus_supplied = true;
if (status & BIT(2))
- linkstat = USB_EVENT_ID;
+ linkstat = OMAP_MUSB_ID_GROUND;
else
- linkstat = USB_EVENT_VBUS;
- } else
- linkstat = USB_EVENT_NONE;
+ linkstat = OMAP_MUSB_VBUS_VALID;
+ } else {
+ if (twl->linkstat != OMAP_MUSB_UNKNOWN)
+ linkstat = OMAP_MUSB_VBUS_OFF;
+ }
dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n",
status, status, linkstat);
- twl->phy.last_event = linkstat;
-
/* REVISIT this assumes host and peripheral controllers
* are registered, and that both are active...
*/
spin_lock_irq(&twl->lock);
twl->linkstat = linkstat;
- if (linkstat == USB_EVENT_ID) {
- otg->default_a = true;
- twl->phy.state = OTG_STATE_A_IDLE;
- } else {
- otg->default_a = false;
- twl->phy.state = OTG_STATE_B_IDLE;
- }
spin_unlock_irq(&twl->lock);
return linkstat;
static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
{
struct twl4030_usb *twl = _twl;
- int status;
+ enum omap_musb_vbus_id_status status;
status = twl4030_usb_linkstat(twl);
- if (status >= 0) {
+ if (status > 0) {
/* FIXME add a set_power() method so that B-devices can
* configure the charger appropriately. It's not always
* correct to consume VBUS power, and how much current to
* USB_LINK_VBUS state. musb_hdrc won't care until it
* starts to handle softconnect right.
*/
- if (status == USB_EVENT_NONE)
+ if (status == OMAP_MUSB_VBUS_OFF ||
+ status == OMAP_MUSB_ID_FLOAT)
twl4030_phy_suspend(twl, 0);
else
twl4030_phy_resume(twl);
- atomic_notifier_call_chain(&twl->phy.notifier, status,
- twl->phy.otg->gadget);
+ omap_musb_mailbox(twl->linkstat);
}
sysfs_notify(&twl->dev->kobj, NULL, "vbus");
static void twl4030_usb_phy_init(struct twl4030_usb *twl)
{
- int status;
+ enum omap_musb_vbus_id_status status;
status = twl4030_usb_linkstat(twl);
- if (status >= 0) {
- if (status == USB_EVENT_NONE) {
+ if (status > 0) {
+ if (status == OMAP_MUSB_VBUS_OFF ||
+ status == OMAP_MUSB_ID_FLOAT) {
__twl4030_phy_power(twl, 0);
twl->asleep = 1;
} else {
twl->asleep = 0;
}
- atomic_notifier_call_chain(&twl->phy.notifier, status,
- twl->phy.otg->gadget);
+ omap_musb_mailbox(twl->linkstat);
}
sysfs_notify(&twl->dev->kobj, NULL, "vbus");
}
return -EINVAL;
}
- twl = kzalloc(sizeof *twl, GFP_KERNEL);
+ twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL);
if (!twl)
return -ENOMEM;
- otg = kzalloc(sizeof *otg, GFP_KERNEL);
- if (!otg) {
- kfree(twl);
+ otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL);
+ if (!otg)
return -ENOMEM;
- }
twl->dev = &pdev->dev;
twl->irq = platform_get_irq(pdev, 0);
twl->usb_mode = pdata->usb_mode;
twl->vbus_supplied = false;
twl->asleep = 1;
+ twl->linkstat = OMAP_MUSB_UNKNOWN;
twl->phy.dev = twl->dev;
twl->phy.label = "twl4030";
err = twl4030_usb_ldo_init(twl);
if (err) {
dev_err(&pdev->dev, "ldo init failed\n");
- kfree(otg);
- kfree(twl);
return err;
}
- usb_set_transceiver(&twl->phy);
+ usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2);
platform_set_drvdata(pdev, twl);
if (device_create_file(&pdev->dev, &dev_attr_vbus))
dev_warn(&pdev->dev, "could not create sysfs file\n");
- ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier);
-
/* Our job is to use irqs and status from the power module
* to keep the transceiver disabled when nothing's connected.
*
*/
twl->irq_enabled = true;
status = request_threaded_irq(twl->irq, NULL, twl4030_usb_irq,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "twl4030_usb", twl);
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
+ IRQF_ONESHOT, "twl4030_usb", twl);
if (status < 0) {
dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n",
twl->irq, status);
- kfree(otg);
- kfree(twl);
return status;
}
regulator_put(twl->usb1v8);
regulator_put(twl->usb3v1);
- kfree(twl->phy.otg);
- kfree(twl);
-
return 0;
}
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/usb/otg.h>
+#include <linux/usb/musb-omap.h>
#include <linux/i2c/twl.h>
#include <linux/regulator/consumer.h>
#include <linux/err.h>
-#include <linux/notifier.h>
#include <linux/slab.h>
#include <linux/delay.h>
int irq1;
int irq2;
- u8 linkstat;
+ enum omap_musb_vbus_id_status linkstat;
u8 asleep;
bool irq_enabled;
bool vbus_enable;
dev = twl->dev;
pdata = dev->platform_data;
- if (twl->linkstat == USB_EVENT_ID)
+ if (twl->linkstat == OMAP_MUSB_ID_GROUND)
pdata->phy_power(twl->dev, 1, 1);
else
pdata->phy_power(twl->dev, 0, 1);
spin_lock_irqsave(&twl->lock, flags);
switch (twl->linkstat) {
- case USB_EVENT_VBUS:
+ case OMAP_MUSB_VBUS_VALID:
ret = snprintf(buf, PAGE_SIZE, "vbus\n");
break;
- case USB_EVENT_ID:
+ case OMAP_MUSB_ID_GROUND:
ret = snprintf(buf, PAGE_SIZE, "id\n");
break;
- case USB_EVENT_NONE:
+ case OMAP_MUSB_VBUS_OFF:
ret = snprintf(buf, PAGE_SIZE, "none\n");
break;
default:
static irqreturn_t twl6030_usb_irq(int irq, void *_twl)
{
struct twl6030_usb *twl = _twl;
- struct usb_otg *otg = twl->phy.otg;
- int status;
+ enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN;
u8 vbus_state, hw_state;
hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS);
if (vbus_state & VBUS_DET) {
regulator_enable(twl->usb3v3);
twl->asleep = 1;
- status = USB_EVENT_VBUS;
- otg->default_a = false;
- twl->phy.state = OTG_STATE_B_IDLE;
+ status = OMAP_MUSB_VBUS_VALID;
twl->linkstat = status;
- twl->phy.last_event = status;
- atomic_notifier_call_chain(&twl->phy.notifier,
- status, otg->gadget);
+ omap_musb_mailbox(status);
} else {
- status = USB_EVENT_NONE;
- twl->linkstat = status;
- twl->phy.last_event = status;
- atomic_notifier_call_chain(&twl->phy.notifier,
- status, otg->gadget);
- if (twl->asleep) {
- regulator_disable(twl->usb3v3);
- twl->asleep = 0;
+ if (twl->linkstat != OMAP_MUSB_UNKNOWN) {
+ status = OMAP_MUSB_VBUS_OFF;
+ twl->linkstat = status;
+ omap_musb_mailbox(status);
+ if (twl->asleep) {
+ regulator_disable(twl->usb3v3);
+ twl->asleep = 0;
+ }
}
}
}
static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl)
{
struct twl6030_usb *twl = _twl;
- struct usb_otg *otg = twl->phy.otg;
- int status = USB_EVENT_NONE;
+ enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN;
u8 hw_state;
hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS);
twl->asleep = 1;
twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_CLR);
twl6030_writeb(twl, TWL_MODULE_USB, 0x10, USB_ID_INT_EN_HI_SET);
- status = USB_EVENT_ID;
- otg->default_a = true;
- twl->phy.state = OTG_STATE_A_IDLE;
+ status = OMAP_MUSB_ID_GROUND;
twl->linkstat = status;
- twl->phy.last_event = status;
- atomic_notifier_call_chain(&twl->phy.notifier, status,
- otg->gadget);
+ omap_musb_mailbox(status);
} else {
twl6030_writeb(twl, TWL_MODULE_USB, 0x10, USB_ID_INT_EN_HI_CLR);
twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_SET);
struct device *dev = &pdev->dev;
pdata = dev->platform_data;
- twl = kzalloc(sizeof *twl, GFP_KERNEL);
+ twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL);
if (!twl)
return -ENOMEM;
- otg = kzalloc(sizeof *otg, GFP_KERNEL);
- if (!otg) {
- kfree(twl);
+ otg = devm_kzalloc(dev, sizeof *otg, GFP_KERNEL);
+ if (!otg)
return -ENOMEM;
- }
twl->dev = &pdev->dev;
twl->irq1 = platform_get_irq(pdev, 0);
twl->irq2 = platform_get_irq(pdev, 1);
twl->features = pdata->features;
+ twl->linkstat = OMAP_MUSB_UNKNOWN;
twl->phy.dev = twl->dev;
twl->phy.label = "twl6030";
err = twl6030_usb_ldo_init(twl);
if (err) {
dev_err(&pdev->dev, "ldo init failed\n");
- kfree(otg);
- kfree(twl);
return err;
}
- usb_set_transceiver(&twl->phy);
+ usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2);
platform_set_drvdata(pdev, twl);
if (device_create_file(&pdev->dev, &dev_attr_vbus))
dev_warn(&pdev->dev, "could not create sysfs file\n");
- ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier);
-
INIT_WORK(&twl->set_vbus_work, otg_set_vbus_work);
twl->irq_enabled = true;
dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
twl->irq1, status);
device_remove_file(twl->dev, &dev_attr_vbus);
- kfree(otg);
- kfree(twl);
return status;
}
twl->irq2, status);
free_irq(twl->irq1, twl);
device_remove_file(twl->dev, &dev_attr_vbus);
- kfree(otg);
- kfree(twl);
return status;
}
pdata->phy_exit(twl->dev);
device_remove_file(twl->dev, &dev_attr_vbus);
cancel_work_sync(&twl->set_vbus_work);
- kfree(twl->phy.otg);
- kfree(twl);
return 0;
}
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe);
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
- struct scatterlist sg;
struct dma_async_tx_descriptor *desc;
struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt);
struct device *dev = usbhs_priv_to_dev(priv);
enum dma_transfer_direction dir;
- dma_cookie_t cookie;
dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV;
- sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(pkt->dma),
- pkt->length, offset_in_page(pkt->dma));
- sg_dma_address(&sg) = pkt->dma + pkt->actual;
- sg_dma_len(&sg) = pkt->trans;
-
- desc = dmaengine_prep_slave_sg(chan, &sg, 1, dir,
+ desc = dmaengine_prep_slave_single(chan, pkt->dma + pkt->actual,
+ pkt->trans, dir,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc)
return;
desc->callback = usbhsf_dma_complete;
desc->callback_param = pipe;
- cookie = desc->tx_submit(desc);
- if (cookie < 0) {
+ if (dmaengine_submit(desc) < 0) {
dev_err(dev, "Failed to submit dma descriptor\n");
return;
}
tty_encode_baud_rate(tty, baud_rate, baud_rate);
/* set CTS/RTS handshake etc. */
p_priv->cflag = cflag;
- p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none;
+ p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none;
/* Mark/Space not supported */
tty->termios->c_cflag &= ~CMSPAR;
p_priv = usb_get_serial_port_data(port);
data = urb->transfer_buffer;
- tty =tty_port_tty_get(&port->port);
+ tty = tty_port_tty_get(&port->port);
if (tty && urb->actual_length) {
tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
p_priv->ri_state = ((msg->ri) ? 1 : 0);
- if( old_dcd_state != p_priv->dcd_state && old_dcd_state) {
+ if (old_dcd_state != p_priv->dcd_state && old_dcd_state) {
tty = tty_port_tty_get(&port->port);
- if (tty && !C_CLOCAL(tty))
+ if (tty && !C_CLOCAL(tty))
tty_hangup(tty);
tty_kref_put(tty);
}
static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct keyspan_port_private *p_priv;
- struct keyspan_serial_private *s_priv;
- struct usb_serial *serial = port->serial;
const struct keyspan_device_details *d_details;
int i, err;
int baud_rate, device_port;
struct urb *urb;
unsigned int cflag = 0;
- s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = p_priv->device_details;
}
/* set CTS/RTS handshake etc. */
p_priv->cflag = cflag;
- p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none;
+ p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none;
keyspan_send_setup(port, 1);
/* mdelay(100); */
{
int i;
struct usb_serial *serial = port->serial;
- struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
- s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
p_priv->rts_state = 0;
if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) {
dev_err(&serial->dev->dev, "Required keyspan firmware image (%s) unavailable.\n", fw_name);
- return(1);
+ return 1;
}
dbg("Uploading Keyspan %s firmware.", fw_name);
msg.setPrescaler = 0xff;
}
- msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
+ msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
switch (p_priv->cflag & CSIZE) {
case CS5:
msg.lcr |= USA_DATABITS_5;
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
- msg.lcr |= (p_priv->cflag & PARODD)?
+ msg.lcr |= (p_priv->cflag & PARODD) ?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
msg.setLcr = 0xff;
/* msg.setPrescaler = 0xff; */
}
- msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
+ msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
switch (p_priv->cflag & CSIZE) {
case CS5:
msg.lcr |= USA_DATABITS_5;
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
- msg.lcr |= (p_priv->cflag & PARODD)?
+ msg.lcr |= (p_priv->cflag & PARODD) ?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
msg.setLcr = 0xff;
msg.txMode = TXMODE_BYHAND;
}
- msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
+ msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
switch (p_priv->cflag & CSIZE) {
case CS5:
msg.lcr |= USA_DATABITS_5;
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
- msg.lcr |= (p_priv->cflag & PARODD)?
+ msg.lcr |= (p_priv->cflag & PARODD) ?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
if (p_priv->old_cflag != p_priv->cflag) {
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
- msg.lcr |= (p_priv->cflag & PARODD)?
+ msg.lcr |= (p_priv->cflag & PARODD) ?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
msg.setLcr = 0xff;
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0165, 0xff, 0xff, 0xff) },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0167, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0326, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1008, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)&net_intf4_blacklist },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1010, 0xff, 0xff, 0xff),
static bool debug;
+struct option_private {
+ u8 bInterfaceNumber;
+};
+
module_usb_serial_driver(serial_drivers, option_ids);
static bool is_blacklisted(const u8 ifnum, enum option_blacklist_reason reason,
const struct usb_device_id *id)
{
struct usb_wwan_intf_private *data;
-
- /* D-Link DWM 652 still exposes CD-Rom emulation interface in modem mode */
- if (serial->dev->descriptor.idVendor == DLINK_VENDOR_ID &&
- serial->dev->descriptor.idProduct == DLINK_PRODUCT_DWM_652 &&
- serial->interface->cur_altsetting->desc.bInterfaceClass == 0x8)
+ struct option_private *priv;
+ struct usb_interface_descriptor *iface_desc =
+ &serial->interface->cur_altsetting->desc;
+ struct usb_device_descriptor *dev_desc = &serial->dev->descriptor;
+
+ /*
+ * D-Link DWM 652 still exposes CD-Rom emulation interface in modem
+ * mode.
+ */
+ if (dev_desc->idVendor == DLINK_VENDOR_ID &&
+ dev_desc->idProduct == DLINK_PRODUCT_DWM_652 &&
+ iface_desc->bInterfaceClass == 0x08)
return -ENODEV;
/* Bandrich modem and AT command interface is 0xff */
- if ((serial->dev->descriptor.idVendor == BANDRICH_VENDOR_ID ||
- serial->dev->descriptor.idVendor == PIRELLI_VENDOR_ID) &&
- serial->interface->cur_altsetting->desc.bInterfaceClass != 0xff)
+ if ((dev_desc->idVendor == BANDRICH_VENDOR_ID ||
+ dev_desc->idVendor == PIRELLI_VENDOR_ID) &&
+ iface_desc->bInterfaceClass != 0xff)
return -ENODEV;
-
- /* Don't bind reserved interfaces (like network ones) which often have
+ /*
+ * Don't bind reserved interfaces (like network ones) which often have
* the same class/subclass/protocol as the serial interfaces. Look at
* the Windows driver .INF files for reserved interface numbers.
*/
if (is_blacklisted(
- serial->interface->cur_altsetting->desc.bInterfaceNumber,
+ iface_desc->bInterfaceNumber,
OPTION_BLACKLIST_RESERVED_IF,
(const struct option_blacklist_info *) id->driver_info))
return -ENODEV;
-
- /* Don't bind network interface on Samsung GT-B3730, it is handled by a separate module */
- if (serial->dev->descriptor.idVendor == SAMSUNG_VENDOR_ID &&
- serial->dev->descriptor.idProduct == SAMSUNG_PRODUCT_GT_B3730 &&
- serial->interface->cur_altsetting->desc.bInterfaceClass != USB_CLASS_CDC_DATA)
+ /*
+ * Don't bind network interface on Samsung GT-B3730, it is handled by
+ * a separate module.
+ */
+ if (dev_desc->idVendor == SAMSUNG_VENDOR_ID &&
+ dev_desc->idProduct == SAMSUNG_PRODUCT_GT_B3730 &&
+ iface_desc->bInterfaceClass != USB_CLASS_CDC_DATA)
return -ENODEV;
- data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL);
+ data = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL);
if (!data)
return -ENOMEM;
- data->send_setup = option_send_setup;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ kfree(data);
+ return -ENOMEM;
+ }
+
+ priv->bInterfaceNumber = iface_desc->bInterfaceNumber;
+ data->private = priv;
+
+ if (!is_blacklisted(iface_desc->bInterfaceNumber,
+ OPTION_BLACKLIST_SENDSETUP,
+ (struct option_blacklist_info *)id->driver_info)) {
+ data->send_setup = option_send_setup;
+ }
spin_lock_init(&data->susp_lock);
- data->private = (void *)id->driver_info;
+
+ usb_set_serial_data(serial, data);
+
return 0;
}
static void option_release(struct usb_serial *serial)
{
- struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
+ struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
+ struct option_private *priv = intfdata->private;
usb_wwan_release(serial);
kfree(priv);
+ kfree(intfdata);
}
static void option_instat_callback(struct urb *urb)
static int option_send_setup(struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
- struct usb_wwan_intf_private *intfdata =
- (struct usb_wwan_intf_private *) serial->private;
+ struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
+ struct option_private *priv = intfdata->private;
struct usb_wwan_port_private *portdata;
- int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
int val = 0;
- if (is_blacklisted(ifNum, OPTION_BLACKLIST_SENDSETUP,
- (struct option_blacklist_info *) intfdata->private)) {
- dbg("No send_setup on blacklisted interface #%d\n", ifNum);
- return -EIO;
- }
-
portdata = usb_get_serial_port_data(port);
if (portdata->dtr_state)
if (portdata->rts_state)
val |= 0x02;
- return usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- 0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT);
+ return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ 0x22, 0x21, val, priv->bInterfaceNumber, NULL,
+ 0, USB_CTRL_SET_TIMEOUT);
}
MODULE_AUTHOR(DRIVER_AUTHOR);
{USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */
{USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */
{USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */
+ {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */
+ {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */
+ {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */
+ {USB_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */
{USB_DEVICE(0x1199, 0x9010)}, /* Sierra Wireless Gobi 3000 QDL */
{USB_DEVICE(0x1199, 0x9012)}, /* Sierra Wireless Gobi 3000 QDL */
{USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
{USB_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */
{USB_DEVICE(0x1199, 0x9018)}, /* Sierra Wireless Gobi 3000 QDL */
{USB_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */
+ {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */
{USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */
{USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */
+
+ /* non Gobi Qualcomm serial devices */
+ {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 0)}, /* Sierra Wireless MC7700 Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 2)}, /* Sierra Wireless MC7700 NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 3)}, /* Sierra Wireless MC7700 Modem */
+ {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 0)}, /* Sierra Wireless MC7750 Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 2)}, /* Sierra Wireless MC7750 NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 3)}, /* Sierra Wireless MC7750 Modem */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 0)}, /* Sierra Wireless MC7710 Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 2)}, /* Sierra Wireless MC7710 NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 3)}, /* Sierra Wireless MC7710 Modem */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 0)}, /* Sierra Wireless EM7700 Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 2)}, /* Sierra Wireless EM7700 NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 3)}, /* Sierra Wireless EM7700 Modem */
+
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
__u8 nintf;
__u8 ifnum;
bool is_gobi1k = id->driver_info ? true : false;
+ int altsetting = -1;
dev_dbg(dev, "Is Gobi 1000 = %d\n", is_gobi1k);
spin_lock_init(&data->susp_lock);
- switch (nintf) {
- case 1:
+ if (nintf == 1) {
/* QDL mode */
/* Gobi 2000 has a single altsetting, older ones have two */
if (serial->interface->num_altsetting == 2)
intf = &serial->interface->altsetting[1];
else if (serial->interface->num_altsetting > 2)
- break;
+ goto done;
if (intf->desc.bNumEndpoints == 2 &&
usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
dev_dbg(dev, "QDL port found\n");
- if (serial->interface->num_altsetting == 1) {
+ if (serial->interface->num_altsetting == 1)
retval = 0; /* Success */
- break;
- }
-
- retval = usb_set_interface(serial->dev, ifnum, 1);
- if (retval < 0) {
- dev_err(dev,
- "Could not set interface, error %d\n",
- retval);
- retval = -ENODEV;
- kfree(data);
- }
+ else
+ altsetting = 1;
}
- break;
+ goto done;
- case 3:
- case 4:
+ }
+
+ /* allow any number of interfaces when doing direct interface match */
+ if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) {
+ dev_dbg(dev, "Generic Qualcomm serial interface found\n");
+ altsetting = 0;
+ goto done;
+ }
+
+ if (nintf < 3 || nintf > 4) {
+ dev_err(dev, "unknown number of interfaces: %d\n", nintf);
+ goto done;
+ }
+
+ /* default to enabling interface */
+ altsetting = 0;
+ switch (ifnum) {
/* Composite mode; don't bind to the QMI/net interface as that
* gets handled by other drivers.
*/
* 3: NMEA
*/
- if (ifnum == 1 && !is_gobi1k) {
+ case 1:
+ if (is_gobi1k)
+ altsetting = -1;
+ else
dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
- retval = usb_set_interface(serial->dev, ifnum, 0);
- if (retval < 0) {
- dev_err(dev,
- "Could not set interface, error %d\n",
- retval);
- retval = -ENODEV;
- kfree(data);
- }
- } else if (ifnum == 2) {
- dev_dbg(dev, "Modem port found\n");
- retval = usb_set_interface(serial->dev, ifnum, 0);
- if (retval < 0) {
- dev_err(dev,
- "Could not set interface, error %d\n",
- retval);
- retval = -ENODEV;
- kfree(data);
- }
- } else if (ifnum==3 && !is_gobi1k) {
+ break;
+ case 2:
+ dev_dbg(dev, "Modem port found\n");
+ break;
+ case 3:
+ if (is_gobi1k)
+ altsetting = -1;
+ else
/*
* NMEA (serial line 9600 8N1)
* # echo "\$GPS_START" > /dev/ttyUSBx
* # echo "\$GPS_STOP" > /dev/ttyUSBx
*/
dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
- retval = usb_set_interface(serial->dev, ifnum, 0);
- if (retval < 0) {
- dev_err(dev,
- "Could not set interface, error %d\n",
- retval);
- retval = -ENODEV;
- kfree(data);
- }
- }
- break;
+ }
- default:
- dev_err(dev, "unknown number of interfaces: %d\n", nintf);
- kfree(data);
- retval = -ENODEV;
+done:
+ if (altsetting >= 0) {
+ retval = usb_set_interface(serial->dev, ifnum, altsetting);
+ if (retval < 0) {
+ dev_err(dev,
+ "Could not set interface, error %d\n",
+ retval);
+ retval = -ENODEV;
+ }
}
- /* Set serial->private if not returning -ENODEV */
- if (retval != -ENODEV)
+ /* Set serial->private if not returning error */
+ if (retval == 0)
usb_set_serial_data(serial, data);
+ else
+ kfree(data);
+
return retval;
}
static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct usb_serial *serial;
- struct qt2_serial_private *serial_priv;
struct qt2_port_private *port_priv;
u8 *data;
u16 device_port;
serial = port->serial;
port_priv = usb_get_serial_port_data(port);
- serial_priv = usb_get_serial_data(serial);
/* set the port to RS232 mode */
status = qt2_control_msg(serial->dev, QT2_GET_SET_QMCR,
static void qt2_close(struct usb_serial_port *port)
{
struct usb_serial *serial;
- struct qt2_serial_private *serial_priv;
struct qt2_port_private *port_priv;
unsigned long flags;
int i;
serial = port->serial;
- serial_priv = usb_get_serial_data(serial);
port_priv = usb_get_serial_port_data(port);
port_priv->is_open = false;
/* Sierra Wireless HSPA Non-Composite Device */
{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
{ USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
- { USB_DEVICE(0x1199, 0x68A2), /* Sierra Wireless MC77xx in QMI mode */
- .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
- },
{ USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */
.driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
},
* NOTE: This only works because a scsi_cmnd struct field contains
* a unsigned char cmnd[16], so we know we have storage available
*/
- for (; srb->cmd_len<12; srb->cmd_len++)
+ for (; srb->cmd_len < 12; srb->cmd_len++)
srb->cmnd[srb->cmd_len] = 0;
/* send the command to the transport layer */
void usb_stor_ufi_command(struct scsi_cmnd *srb, struct us_data *us)
{
/* fix some commands -- this is a form of mode translation
- * UFI devices only accept 12 byte long commands
+ * UFI devices only accept 12 byte long commands
*
* NOTE: This only works because a scsi_cmnd struct field contains
* a unsigned char cmnd[16], so we know we have storage available
*/
/* Pad the ATAPI command with zeros */
- for (; srb->cmd_len<12; srb->cmd_len++)
+ for (; srb->cmd_len < 12; srb->cmd_len++)
srb->cmnd[srb->cmd_len] = 0;
/* set command length to 12 bytes (this affects the transport layer) */
struct uas_dev_info {
struct usb_interface *intf;
struct usb_device *udev;
- int qdepth;
+ struct usb_anchor sense_urbs;
+ struct usb_anchor data_urbs;
+ int qdepth, resetting;
+ struct response_ui response;
unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe;
unsigned use_streams:1;
unsigned uas_sense_old:1;
struct scsi_cmnd *cmnd;
- struct urb *status_urb; /* used only if stream support is available */
};
enum {
- ALLOC_STATUS_URB = (1 << 0),
SUBMIT_STATUS_URB = (1 << 1),
ALLOC_DATA_IN_URB = (1 << 2),
SUBMIT_DATA_IN_URB = (1 << 3),
SUBMIT_DATA_OUT_URB = (1 << 5),
ALLOC_CMD_URB = (1 << 6),
SUBMIT_CMD_URB = (1 << 7),
- COMPLETED_DATA_IN = (1 << 8),
- COMPLETED_DATA_OUT = (1 << 9),
- DATA_COMPLETES_CMD = (1 << 10),
+ COMMAND_INFLIGHT = (1 << 8),
+ DATA_IN_URB_INFLIGHT = (1 << 9),
+ DATA_OUT_URB_INFLIGHT = (1 << 10),
+ COMMAND_COMPLETED = (1 << 11),
};
/* Overrides scsi_pointer */
struct uas_cmd_info {
unsigned int state;
unsigned int stream;
+ unsigned int aborted;
struct urb *cmd_urb;
- /* status_urb is used only if stream support isn't available */
- struct urb *status_urb;
struct urb *data_in_urb;
struct urb *data_out_urb;
struct list_head list;
{
struct sense_iu *sense_iu = urb->transfer_buffer;
struct scsi_device *sdev = cmnd->device;
- struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
if (urb->actual_length > 16) {
unsigned len = be16_to_cpup(&sense_iu->len);
}
cmnd->result = sense_iu->status;
- if (!(cmdinfo->state & DATA_COMPLETES_CMD))
- cmnd->scsi_done(cmnd);
}
static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd)
{
struct sense_iu_old *sense_iu = urb->transfer_buffer;
struct scsi_device *sdev = cmnd->device;
- struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
if (urb->actual_length > 8) {
unsigned len = be16_to_cpup(&sense_iu->len) - 2;
}
cmnd->result = sense_iu->status;
- if (!(cmdinfo->state & DATA_COMPLETES_CMD))
- cmnd->scsi_done(cmnd);
+}
+
+static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller)
+{
+ struct uas_cmd_info *ci = (void *)&cmnd->SCp;
+
+ scmd_printk(KERN_INFO, cmnd, "%s %p tag %d, inflight:"
+ "%s%s%s%s%s%s%s%s%s%s%s\n",
+ caller, cmnd, cmnd->request->tag,
+ (ci->state & SUBMIT_STATUS_URB) ? " s-st" : "",
+ (ci->state & ALLOC_DATA_IN_URB) ? " a-in" : "",
+ (ci->state & SUBMIT_DATA_IN_URB) ? " s-in" : "",
+ (ci->state & ALLOC_DATA_OUT_URB) ? " a-out" : "",
+ (ci->state & SUBMIT_DATA_OUT_URB) ? " s-out" : "",
+ (ci->state & ALLOC_CMD_URB) ? " a-cmd" : "",
+ (ci->state & SUBMIT_CMD_URB) ? " s-cmd" : "",
+ (ci->state & COMMAND_INFLIGHT) ? " CMD" : "",
+ (ci->state & DATA_IN_URB_INFLIGHT) ? " IN" : "",
+ (ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "",
+ (ci->state & COMMAND_COMPLETED) ? " done" : "");
+}
+
+static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller)
+{
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+
+ if (cmdinfo->state & (COMMAND_INFLIGHT |
+ DATA_IN_URB_INFLIGHT |
+ DATA_OUT_URB_INFLIGHT))
+ return -EBUSY;
+ BUG_ON(cmdinfo->state & COMMAND_COMPLETED);
+ cmdinfo->state |= COMMAND_COMPLETED;
+ usb_free_urb(cmdinfo->data_in_urb);
+ usb_free_urb(cmdinfo->data_out_urb);
+ cmnd->scsi_done(cmnd);
+ return 0;
}
static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd,
- unsigned direction)
+ unsigned direction)
{
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
int err;
- cmdinfo->state = direction;
+ cmdinfo->state |= direction | SUBMIT_STATUS_URB;
err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC);
if (err) {
spin_lock(&uas_work_lock);
struct scsi_cmnd *cmnd;
struct uas_cmd_info *cmdinfo;
u16 tag;
- int ret;
if (urb->status) {
dev_err(&urb->dev->dev, "URB BAD STATUS %d\n", urb->status);
- if (devinfo->use_streams)
- usb_free_urb(urb);
+ usb_free_urb(urb);
+ return;
+ }
+
+ if (devinfo->resetting) {
+ usb_free_urb(urb);
return;
}
else
cmnd = scsi_host_find_tag(shost, tag - 1);
if (!cmnd) {
- if (devinfo->use_streams) {
+ if (iu->iu_id != IU_ID_RESPONSE) {
usb_free_urb(urb);
return;
}
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret)
- dev_err(&urb->dev->dev, "failed submit status urb\n");
- return;
+ } else {
+ cmdinfo = (void *)&cmnd->SCp;
}
- cmdinfo = (void *)&cmnd->SCp;
switch (iu->iu_id) {
case IU_ID_STATUS:
if (devinfo->cmnd == cmnd)
devinfo->cmnd = NULL;
- if (!(cmdinfo->state & COMPLETED_DATA_IN) &&
- cmdinfo->data_in_urb) {
- if (devinfo->use_streams) {
- cmdinfo->state |= DATA_COMPLETES_CMD;
- usb_unlink_urb(cmdinfo->data_in_urb);
- } else {
- usb_free_urb(cmdinfo->data_in_urb);
- }
- }
- if (!(cmdinfo->state & COMPLETED_DATA_OUT) &&
- cmdinfo->data_out_urb) {
- if (devinfo->use_streams) {
- cmdinfo->state |= DATA_COMPLETES_CMD;
- usb_unlink_urb(cmdinfo->data_in_urb);
- } else {
- usb_free_urb(cmdinfo->data_out_urb);
- }
- }
-
if (urb->actual_length < 16)
devinfo->uas_sense_old = 1;
if (devinfo->uas_sense_old)
uas_sense_old(urb, cmnd);
else
uas_sense(urb, cmnd);
+ if (cmnd->result != 0) {
+ /* cancel data transfers on error */
+ if (cmdinfo->state & DATA_IN_URB_INFLIGHT)
+ usb_unlink_urb(cmdinfo->data_in_urb);
+ if (cmdinfo->state & DATA_OUT_URB_INFLIGHT)
+ usb_unlink_urb(cmdinfo->data_out_urb);
+ }
+ cmdinfo->state &= ~COMMAND_INFLIGHT;
+ uas_try_complete(cmnd, __func__);
break;
case IU_ID_READ_READY:
uas_xfer_data(urb, cmnd, SUBMIT_DATA_IN_URB);
case IU_ID_WRITE_READY:
uas_xfer_data(urb, cmnd, SUBMIT_DATA_OUT_URB);
break;
+ case IU_ID_RESPONSE:
+ /* store results for uas_eh_task_mgmt() */
+ memcpy(&devinfo->response, iu, sizeof(devinfo->response));
+ break;
default:
scmd_printk(KERN_ERR, cmnd,
"Bogus IU (%d) received on status pipe\n", iu->iu_id);
}
-
- if (devinfo->use_streams) {
- usb_free_urb(urb);
- return;
- }
-
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret)
- dev_err(&urb->dev->dev, "failed submit status urb\n");
-}
-
-static void uas_data_out_cmplt(struct urb *urb)
-{
- struct scsi_cmnd *cmnd = urb->context;
- struct scsi_data_buffer *sdb = scsi_out(cmnd);
- struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
-
- cmdinfo->state |= COMPLETED_DATA_OUT;
-
- sdb->resid = sdb->length - urb->actual_length;
usb_free_urb(urb);
-
- if (cmdinfo->state & DATA_COMPLETES_CMD)
- cmnd->scsi_done(cmnd);
}
-static void uas_data_in_cmplt(struct urb *urb)
+static void uas_data_cmplt(struct urb *urb)
{
struct scsi_cmnd *cmnd = urb->context;
- struct scsi_data_buffer *sdb = scsi_in(cmnd);
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+ struct scsi_data_buffer *sdb = NULL;
- cmdinfo->state |= COMPLETED_DATA_IN;
-
- sdb->resid = sdb->length - urb->actual_length;
- usb_free_urb(urb);
-
- if (cmdinfo->state & DATA_COMPLETES_CMD)
- cmnd->scsi_done(cmnd);
+ if (cmdinfo->data_in_urb == urb) {
+ sdb = scsi_in(cmnd);
+ cmdinfo->state &= ~DATA_IN_URB_INFLIGHT;
+ } else if (cmdinfo->data_out_urb == urb) {
+ sdb = scsi_out(cmnd);
+ cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT;
+ }
+ BUG_ON(sdb == NULL);
+ if (urb->status) {
+ /* error: no data transfered */
+ sdb->resid = sdb->length;
+ } else {
+ sdb->resid = sdb->length - urb->actual_length;
+ }
+ if (cmdinfo->aborted) {
+ return;
+ }
+ uas_try_complete(cmnd, __func__);
}
static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp,
- unsigned int pipe, struct scsi_cmnd *cmnd,
- enum dma_data_direction dir)
+ unsigned int pipe, u16 stream_id,
+ struct scsi_cmnd *cmnd,
+ enum dma_data_direction dir)
{
- struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
struct usb_device *udev = devinfo->udev;
struct urb *urb = usb_alloc_urb(0, gfp);
- struct scsi_data_buffer *sdb;
- usb_complete_t complete_fn;
- u16 stream_id = cmdinfo->stream;
+ struct scsi_data_buffer *sdb = (dir == DMA_FROM_DEVICE)
+ ? scsi_in(cmnd) : scsi_out(cmnd);
if (!urb)
goto out;
- if (dir == DMA_FROM_DEVICE) {
- sdb = scsi_in(cmnd);
- complete_fn = uas_data_in_cmplt;
- } else {
- sdb = scsi_out(cmnd);
- complete_fn = uas_data_out_cmplt;
- }
usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length,
- complete_fn, cmnd);
- urb->stream_id = stream_id;
+ uas_data_cmplt, cmnd);
+ if (devinfo->use_streams)
+ urb->stream_id = stream_id;
urb->num_sgs = udev->bus->sg_tablesize ? sdb->table.nents : 0;
urb->sg = sdb->table.sgl;
out:
}
static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp,
- struct Scsi_Host *shost, u16 stream_id)
+ struct Scsi_Host *shost, u16 stream_id)
{
struct usb_device *udev = devinfo->udev;
struct urb *urb = usb_alloc_urb(0, gfp);
return NULL;
}
+static int uas_submit_task_urb(struct scsi_cmnd *cmnd, gfp_t gfp,
+ u8 function, u16 stream_id)
+{
+ struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata;
+ struct usb_device *udev = devinfo->udev;
+ struct urb *urb = usb_alloc_urb(0, gfp);
+ struct task_mgmt_iu *iu;
+ int err = -ENOMEM;
+
+ if (!urb)
+ goto err;
+
+ iu = kzalloc(sizeof(*iu), gfp);
+ if (!iu)
+ goto err;
+
+ iu->iu_id = IU_ID_TASK_MGMT;
+ iu->tag = cpu_to_be16(stream_id);
+ int_to_scsilun(cmnd->device->lun, &iu->lun);
+
+ iu->function = function;
+ switch (function) {
+ case TMF_ABORT_TASK:
+ if (blk_rq_tagged(cmnd->request))
+ iu->task_tag = cpu_to_be16(cmnd->request->tag + 2);
+ else
+ iu->task_tag = cpu_to_be16(1);
+ break;
+ }
+
+ usb_fill_bulk_urb(urb, udev, devinfo->cmd_pipe, iu, sizeof(*iu),
+ usb_free_urb, NULL);
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ err = usb_submit_urb(urb, gfp);
+ if (err)
+ goto err;
+
+ return 0;
+
+err:
+ usb_free_urb(urb);
+ return err;
+}
+
/*
* Why should I request the Status IU before sending the Command IU? Spec
* says to, but also says the device may receive them in any order. Seems
* daft to me.
*/
-static int uas_submit_urbs(struct scsi_cmnd *cmnd,
- struct uas_dev_info *devinfo, gfp_t gfp)
+static int uas_submit_sense_urb(struct Scsi_Host *shost,
+ gfp_t gfp, unsigned int stream)
{
- struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+ struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
+ struct urb *urb;
- if (cmdinfo->state & ALLOC_STATUS_URB) {
- cmdinfo->status_urb = uas_alloc_sense_urb(devinfo, gfp,
- cmnd->device->host, cmdinfo->stream);
- if (!cmdinfo->status_urb)
- return SCSI_MLQUEUE_DEVICE_BUSY;
- cmdinfo->state &= ~ALLOC_STATUS_URB;
+ urb = uas_alloc_sense_urb(devinfo, gfp, shost, stream);
+ if (!urb)
+ return SCSI_MLQUEUE_DEVICE_BUSY;
+ if (usb_submit_urb(urb, gfp)) {
+ shost_printk(KERN_INFO, shost,
+ "sense urb submission failure\n");
+ usb_free_urb(urb);
+ return SCSI_MLQUEUE_DEVICE_BUSY;
}
+ usb_anchor_urb(urb, &devinfo->sense_urbs);
+ return 0;
+}
+
+static int uas_submit_urbs(struct scsi_cmnd *cmnd,
+ struct uas_dev_info *devinfo, gfp_t gfp)
+{
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+ int err;
if (cmdinfo->state & SUBMIT_STATUS_URB) {
- if (usb_submit_urb(cmdinfo->status_urb, gfp)) {
- scmd_printk(KERN_INFO, cmnd,
- "sense urb submission failure\n");
- return SCSI_MLQUEUE_DEVICE_BUSY;
+ err = uas_submit_sense_urb(cmnd->device->host, gfp,
+ cmdinfo->stream);
+ if (err) {
+ return err;
}
cmdinfo->state &= ~SUBMIT_STATUS_URB;
}
if (cmdinfo->state & ALLOC_DATA_IN_URB) {
cmdinfo->data_in_urb = uas_alloc_data_urb(devinfo, gfp,
- devinfo->data_in_pipe, cmnd,
- DMA_FROM_DEVICE);
+ devinfo->data_in_pipe, cmdinfo->stream,
+ cmnd, DMA_FROM_DEVICE);
if (!cmdinfo->data_in_urb)
return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~ALLOC_DATA_IN_URB;
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->state &= ~SUBMIT_DATA_IN_URB;
+ cmdinfo->state |= DATA_IN_URB_INFLIGHT;
+ usb_anchor_urb(cmdinfo->data_in_urb, &devinfo->data_urbs);
}
if (cmdinfo->state & ALLOC_DATA_OUT_URB) {
cmdinfo->data_out_urb = uas_alloc_data_urb(devinfo, gfp,
- devinfo->data_out_pipe, cmnd,
- DMA_TO_DEVICE);
+ devinfo->data_out_pipe, cmdinfo->stream,
+ cmnd, DMA_TO_DEVICE);
if (!cmdinfo->data_out_urb)
return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~ALLOC_DATA_OUT_URB;
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->state &= ~SUBMIT_DATA_OUT_URB;
+ cmdinfo->state |= DATA_OUT_URB_INFLIGHT;
+ usb_anchor_urb(cmdinfo->data_out_urb, &devinfo->data_urbs);
}
if (cmdinfo->state & ALLOC_CMD_URB) {
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->state &= ~SUBMIT_CMD_URB;
+ cmdinfo->state |= COMMAND_INFLIGHT;
}
return 0;
cmnd->scsi_done = done;
- cmdinfo->state = ALLOC_STATUS_URB | SUBMIT_STATUS_URB |
+ cmdinfo->state = SUBMIT_STATUS_URB |
ALLOC_CMD_URB | SUBMIT_CMD_URB;
+ cmdinfo->aborted = 0;
switch (cmnd->sc_data_direction) {
case DMA_FROM_DEVICE:
}
if (!devinfo->use_streams) {
- cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB |
- ALLOC_STATUS_URB | SUBMIT_STATUS_URB);
+ cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB);
cmdinfo->stream = 0;
}
if (err) {
/* If we did nothing, give up now */
if (cmdinfo->state & SUBMIT_STATUS_URB) {
- usb_free_urb(cmdinfo->status_urb);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
spin_lock(&uas_work_lock);
static DEF_SCSI_QCMD(uas_queuecommand)
-static int uas_eh_abort_handler(struct scsi_cmnd *cmnd)
+static int uas_eh_task_mgmt(struct scsi_cmnd *cmnd,
+ const char *fname, u8 function)
{
- struct scsi_device *sdev = cmnd->device;
- sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__,
- cmnd->request->tag);
-
-/* XXX: Send ABORT TASK Task Management command */
- return FAILED;
+ struct Scsi_Host *shost = cmnd->device->host;
+ struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
+ u16 tag = 9999; /* FIXME */
+
+ memset(&devinfo->response, 0, sizeof(devinfo->response));
+ if (uas_submit_sense_urb(shost, GFP_NOIO, tag)) {
+ shost_printk(KERN_INFO, shost,
+ "%s: %s: submit sense urb failed\n",
+ __func__, fname);
+ return FAILED;
+ }
+ if (uas_submit_task_urb(cmnd, GFP_NOIO, function, tag)) {
+ shost_printk(KERN_INFO, shost,
+ "%s: %s: submit task mgmt urb failed\n",
+ __func__, fname);
+ return FAILED;
+ }
+ if (0 == usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 3000)) {
+ shost_printk(KERN_INFO, shost,
+ "%s: %s timed out\n", __func__, fname);
+ return FAILED;
+ }
+ if (be16_to_cpu(devinfo->response.tag) != tag) {
+ shost_printk(KERN_INFO, shost,
+ "%s: %s failed (wrong tag %d/%d)\n", __func__,
+ fname, be16_to_cpu(devinfo->response.tag), tag);
+ return FAILED;
+ }
+ if (devinfo->response.response_code != RC_TMF_COMPLETE) {
+ shost_printk(KERN_INFO, shost,
+ "%s: %s failed (rc 0x%x)\n", __func__,
+ fname, devinfo->response.response_code);
+ return FAILED;
+ }
+ return SUCCESS;
}
-static int uas_eh_device_reset_handler(struct scsi_cmnd *cmnd)
+static int uas_eh_abort_handler(struct scsi_cmnd *cmnd)
{
- struct scsi_device *sdev = cmnd->device;
- sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__,
- cmnd->request->tag);
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+ int ret;
-/* XXX: Send LOGICAL UNIT RESET Task Management command */
- return FAILED;
+ uas_log_cmd_state(cmnd, __func__);
+ cmdinfo->aborted = 1;
+ ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK);
+ if (cmdinfo->state & DATA_IN_URB_INFLIGHT)
+ usb_kill_urb(cmdinfo->data_in_urb);
+ if (cmdinfo->state & DATA_OUT_URB_INFLIGHT)
+ usb_kill_urb(cmdinfo->data_out_urb);
+ return ret;
}
-static int uas_eh_target_reset_handler(struct scsi_cmnd *cmnd)
+static int uas_eh_device_reset_handler(struct scsi_cmnd *cmnd)
{
- struct scsi_device *sdev = cmnd->device;
- sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__,
- cmnd->request->tag);
-
-/* XXX: Can we reset just the one USB interface?
- * Would calling usb_set_interface() have the right effect?
- */
- return FAILED;
+ sdev_printk(KERN_INFO, cmnd->device, "%s\n", __func__);
+ return uas_eh_task_mgmt(cmnd, "LOGICAL UNIT RESET",
+ TMF_LOGICAL_UNIT_RESET);
}
static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd)
struct scsi_device *sdev = cmnd->device;
struct uas_dev_info *devinfo = sdev->hostdata;
struct usb_device *udev = devinfo->udev;
+ int err;
- sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__,
- cmnd->request->tag);
+ devinfo->resetting = 1;
+ usb_kill_anchored_urbs(&devinfo->sense_urbs);
+ usb_kill_anchored_urbs(&devinfo->data_urbs);
+ err = usb_reset_device(udev);
+ devinfo->resetting = 0;
- if (usb_reset_device(udev))
- return SUCCESS;
+ if (err) {
+ shost_printk(KERN_INFO, sdev->host, "%s FAILED\n", __func__);
+ return FAILED;
+ }
- return FAILED;
+ shost_printk(KERN_INFO, sdev->host, "%s success\n", __func__);
+ return SUCCESS;
}
static int uas_slave_alloc(struct scsi_device *sdev)
.slave_configure = uas_slave_configure,
.eh_abort_handler = uas_eh_abort_handler,
.eh_device_reset_handler = uas_eh_device_reset_handler,
- .eh_target_reset_handler = uas_eh_target_reset_handler,
.eh_bus_reset_handler = uas_eh_bus_reset_handler,
.can_queue = 65536, /* Is there a limit on the _host_ ? */
.this_id = -1,
}
}
-static int uas_alloc_status_urb(struct uas_dev_info *devinfo,
- struct Scsi_Host *shost)
-{
- if (devinfo->use_streams) {
- devinfo->status_urb = NULL;
- return 0;
- }
-
- devinfo->status_urb = uas_alloc_sense_urb(devinfo, GFP_KERNEL,
- shost, 0);
- if (!devinfo->status_urb)
- goto err_s_urb;
-
- if (usb_submit_urb(devinfo->status_urb, GFP_KERNEL))
- goto err_submit_urb;
-
- return 0;
-err_submit_urb:
- usb_free_urb(devinfo->status_urb);
-err_s_urb:
- return -ENOMEM;
-}
-
static void uas_free_streams(struct uas_dev_info *devinfo)
{
struct usb_device *udev = devinfo->udev;
devinfo->intf = intf;
devinfo->udev = udev;
+ devinfo->resetting = 0;
+ init_usb_anchor(&devinfo->sense_urbs);
+ init_usb_anchor(&devinfo->data_urbs);
uas_configure_endpoints(devinfo);
result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2);
shost->hostdata[0] = (unsigned long)devinfo;
- result = uas_alloc_status_urb(devinfo, shost);
- if (result)
- goto err_alloc_status;
-
scsi_scan_host(shost);
usb_set_intfdata(intf, shost);
return result;
-err_alloc_status:
- scsi_remove_host(shost);
- shost = NULL;
deconfig_eps:
uas_free_streams(devinfo);
free:
struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
scsi_remove_host(shost);
- usb_kill_urb(devinfo->status_urb);
- usb_free_urb(devinfo->status_urb);
+ usb_kill_anchored_urbs(&devinfo->sense_urbs);
+ usb_kill_anchored_urbs(&devinfo->data_urbs);
uas_free_streams(devinfo);
kfree(devinfo);
}
* of a given interface; other interfaces may support other classes.
* @bInterfaceSubClass: Subclass of interface; associated with bInterfaceClass.
* @bInterfaceProtocol: Protocol of interface; associated with bInterfaceClass.
+ * @bInterfaceNumber: Number of interface; composite devices may use
+ * fixed interface numbers to differentiate between vendor-specific
+ * interfaces.
* @driver_info: Holds information used by the driver. Usually it holds
* a pointer to a descriptor understood by the driver, or perhaps
* device flags.
__u8 bInterfaceSubClass;
__u8 bInterfaceProtocol;
+ /* Used for vendor-specific interface matches */
+ __u8 bInterfaceNumber;
+
/* not matched against */
- kernel_ulong_t driver_info;
+ kernel_ulong_t driver_info
+ __attribute__((aligned(sizeof(kernel_ulong_t))));
};
/* Some useful macros to use to create struct usb_device_id */
#define USB_DEVICE_ID_MATCH_INT_CLASS 0x0080
#define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100
#define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200
+#define USB_DEVICE_ID_MATCH_INT_NUMBER 0x0400
#define HID_ANY_ID (~0)
#define HID_BUS_ANY 0xffff
* published by the Free Software Foundation.
*/
+#ifndef __LINUX_USB_S3C_HSOTG_H
+#define __LINUX_USB_S3C_HSOTG_H
+
enum s3c_hsotg_dmamode {
S3C_HSOTG_DMA_NONE, /* do not use DMA at-all */
S3C_HSOTG_DMA_ONLY, /* always use DMA */
};
extern void s3c_hsotg_set_platdata(struct s3c_hsotg_plat *pd);
+
+#endif /* __LINUX_USB_S3C_HSOTG_H */
struct usb_host_interface {
struct usb_interface_descriptor desc;
+ int extralen;
+ unsigned char *extra; /* Extra descriptors */
+
/* array of desc.bNumEndpoint endpoints associated with this
* interface setting. these will be in no particular order.
*/
struct usb_host_endpoint *endpoint;
char *string; /* iInterface string, if present */
- unsigned char *extra; /* Extra descriptors */
- int extralen;
};
enum usb_interface_condition {
u8 otg_port; /* 0, or number of OTG/HNP port */
unsigned is_b_host:1; /* true during some HNP roleswitches */
unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */
+ unsigned no_stop_on_short:1; /*
+ * Quirk: some controllers don't stop
+ * the ep queue on a short transfer
+ * with the URB_SHORT_NOT_OK flag set.
+ */
unsigned sg_tablesize; /* 0 or largest number of sg list entries */
int devnum_next; /* Next open device number in
struct usb3_lpm_parameters u1_params;
struct usb3_lpm_parameters u2_params;
unsigned lpm_disable_count;
- unsigned hub_initiated_lpm_disable_count;
};
#define to_usb_device(d) container_of(d, struct usb_device, dev)
extern int usb_unlocked_disable_lpm(struct usb_device *udev);
extern void usb_unlocked_enable_lpm(struct usb_device *udev);
+extern int usb_disable_ltm(struct usb_device *udev);
+extern void usb_enable_ltm(struct usb_device *udev);
+
+static inline bool usb_device_supports_ltm(struct usb_device *udev)
+{
+ if (udev->speed != USB_SPEED_SUPER || !udev->bos || !udev->bos->ss_cap)
+ return false;
+ return udev->bos->ss_cap->bmAttributes & USB_LTM_SUPPORT;
+}
+
+
/*-------------------------------------------------------------------------*/
/* for drivers using iso endpoints */
.bInterfaceProtocol = (pr)
/**
+ * USB_DEVICE_INTERFACE_NUMBER - describe a usb device with a specific interface number
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @num: bInterfaceNumber value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific interface number of devices.
+ */
+#define USB_DEVICE_INTERFACE_NUMBER(vend, prod, num) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
+ USB_DEVICE_ID_MATCH_INT_NUMBER, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceNumber = (num)
+
+/**
* USB_DEVICE_INFO - macro used to describe a class of usb devices
* @cl: bDeviceClass value
* @sc: bDeviceSubClass value
.bInterfaceSubClass = (sc), \
.bInterfaceProtocol = (pr)
+/**
+ * USB_VENDOR_AND_INTERFACE_INFO - describe a specific usb vendor with a class of usb interfaces
+ * @vend: the 16 bit USB Vendor ID
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific vendor with a specific class of interfaces.
+ *
+ * This is especially useful when explicitly matching devices that have
+ * vendor specific bDeviceClass values, but standards-compliant interfaces.
+ */
+#define USB_VENDOR_AND_INTERFACE_INFO(vend, cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
+ | USB_DEVICE_ID_MATCH_VENDOR, \
+ .idVendor = (vend), \
+ .bInterfaceClass = (cl), \
+ .bInterfaceSubClass = (sc), \
+ .bInterfaceProtocol = (pr)
+
/* ----------------------------------------------------------------------- */
/* Stuff for dynamic usb ids */
#ifndef __LINUX_USB_CHIPIDEA_H
#define __LINUX_USB_CHIPIDEA_H
+#include <linux/usb/otg.h>
+
struct ci13xxx;
-struct ci13xxx_udc_driver {
+struct ci13xxx_platform_data {
const char *name;
/* offset of the capability registers */
uintptr_t capoffset;
unsigned power_budget;
+ struct usb_phy *phy;
unsigned long flags;
#define CI13XXX_REGS_SHARED BIT(0)
#define CI13XXX_REQUIRE_TRANSCEIVER BIT(1)
#define CI13XXX_CONTROLLER_RESET_EVENT 0
#define CI13XXX_CONTROLLER_STOPPED_EVENT 1
- void (*notify_event) (struct ci13xxx *udc, unsigned event);
+ void (*notify_event) (struct ci13xxx *ci, unsigned event);
};
/* Default offset of capability registers */
#define DEF_CAPOFFSET 0x100
+/* Add ci13xxx device */
+struct platform_device *ci13xxx_add_device(struct device *dev,
+ struct resource *res, int nres,
+ struct ci13xxx_platform_data *platdata);
+/* Remove ci13xxx device */
+void ci13xxx_remove_device(struct platform_device *pdev);
+
#endif
/* ASYNCLISTADDR: offset 0x18 */
u32 async_next; /* address of next async queue head */
- u32 reserved[9];
+ u32 reserved1[2];
+
+ /* TXFILLTUNING: offset 0x24 */
+ u32 txfill_tuning; /* TX FIFO Tuning register */
+#define TXFIFO_DEFAULT (8<<16) /* FIFO burst threshold 8 */
+
+ u32 reserved2[6];
/* CONFIGFLAG: offset 0x40 */
u32 configured_flag;
#define PORT_CSC (1<<1) /* connect status change */
#define PORT_CONNECT (1<<0) /* device connected */
#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC)
-};
-#define USBMODE 0x68 /* USB Device mode */
+ u32 reserved3[9];
+
+ /* USBMODE: offset 0x68 */
+ u32 usbmode; /* USB Device mode */
#define USBMODE_SDIS (1<<3) /* Stream disable */
#define USBMODE_BE (1<<2) /* BE/LE endianness select */
#define USBMODE_CM_HC (3<<0) /* host controller mode */
#define USBMODE_CM_IDLE (0<<0) /* idle state */
+ u32 reserved4[7];
+
/* Moorestown has some non-standard registers, partially due to the fact that
* its EHCI controller has both TT and LPM support. HOSTPCx are extensions to
* PORTSCx
*/
-#define HOSTPC0 0x84 /* HOSTPC extension */
+ /* HOSTPC: offset 0x84 */
+ u32 hostpc[0]; /* HOSTPC extension */
#define HOSTPC_PHCD (1<<22) /* Phy clock disable */
#define HOSTPC_PSPD (3<<25) /* Port speed detection */
-#define USBMODE_EX 0xc8 /* USB Device mode extension */
+
+ u32 reserved5[17];
+
+ /* USBMODE_EX: offset 0xc8 */
+ u32 usbmode_ex; /* USB Device mode extension */
#define USBMODE_EX_VBPS (1<<5) /* VBus Power Select On */
#define USBMODE_EX_HC (3<<0) /* host controller mode */
-#define TXFILLTUNING 0x24 /* TX FIFO Tuning register */
-#define TXFIFO_DEFAULT (8<<16) /* FIFO burst threshold 8 */
+};
/* Appendix C, Debug port ... intended for use with special "debug devices"
* that can help if there's no serial console. (nonstandard enumeration.)
*/
const struct hc_driver *driver; /* hw-specific hooks */
+ /*
+ * OTG and some Host controllers need software interaction with phys;
+ * other external phys should be software-transparent
+ */
+ struct usb_phy *phy;
+
/* Flags that need to be manipulated atomically because they can
* change while the host controller is running. Always use
* set_bit() or clear_bit() to change their values.
--- /dev/null
+/*
+ * Copyright (C) 2011-2012 by Texas Instruments
+ *
+ * The Inventra Controller Driver for Linux is free software; you
+ * can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 2 as published by the Free Software
+ * Foundation.
+ */
+
+#ifndef __MUSB_OMAP_H__
+#define __MUSB_OMAP_H__
+
+enum omap_musb_vbus_id_status {
+ OMAP_MUSB_UNKNOWN = 0,
+ OMAP_MUSB_ID_GROUND,
+ OMAP_MUSB_ID_FLOAT,
+ OMAP_MUSB_VBUS_VALID,
+ OMAP_MUSB_VBUS_OFF,
+};
+
+#if (defined(CONFIG_USB_MUSB_OMAP2PLUS) || \
+ defined(CONFIG_USB_MUSB_OMAP2PLUS_MODULE))
+void omap_musb_mailbox(enum omap_musb_vbus_id_status status);
+#else
+static inline void omap_musb_mailbox(enum omap_musb_vbus_id_status status)
+{
+}
+#endif
+
+#endif /* __MUSB_OMAP_H__ */
USB_EVENT_ENUMERATED, /* gadget driver enumerated */
};
+/* associate a type with PHY */
+enum usb_phy_type {
+ USB_PHY_TYPE_UNDEFINED,
+ USB_PHY_TYPE_USB2,
+ USB_PHY_TYPE_USB3,
+};
+
struct usb_phy;
/* for transceivers connected thru an ULPI interface, the user must
const char *label;
unsigned int flags;
+ enum usb_phy_type type;
enum usb_otg_state state;
enum usb_phy_events last_event;
u16 port_status;
u16 port_change;
+ /* to support controllers that have multiple transceivers */
+ struct list_head head;
+
/* initialize/shutdown the OTG controller */
int (*init)(struct usb_phy *x);
void (*shutdown)(struct usb_phy *x);
int (*set_suspend)(struct usb_phy *x,
int suspend);
+ /* notify phy connect status change */
+ int (*notify_connect)(struct usb_phy *x, int port);
+ int (*notify_disconnect)(struct usb_phy *x, int port);
};
/* for board-specific init logic */
-extern int usb_set_transceiver(struct usb_phy *);
+extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type);
+extern void usb_remove_phy(struct usb_phy *);
#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
/* sometimes transceivers are accessed only through e.g. ULPI */
/* for usb host and peripheral controller drivers */
#ifdef CONFIG_USB_OTG_UTILS
-extern struct usb_phy *usb_get_transceiver(void);
-extern void usb_put_transceiver(struct usb_phy *);
+extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
+extern struct usb_phy *devm_usb_get_phy(struct device *dev,
+ enum usb_phy_type type);
+extern void usb_put_phy(struct usb_phy *);
+extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x);
extern const char *otg_state_string(enum usb_otg_state state);
#else
-static inline struct usb_phy *usb_get_transceiver(void)
+static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
+{
+ return NULL;
+}
+
+static inline struct usb_phy *devm_usb_get_phy(struct device *dev,
+ enum usb_phy_type type)
{
return NULL;
}
-static inline void usb_put_transceiver(struct usb_phy *x)
+static inline void usb_put_phy(struct usb_phy *x)
+{
+}
+
+static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x)
{
}
}
static inline int
+usb_phy_notify_connect(struct usb_phy *x, int port)
+{
+ if (x->notify_connect)
+ return x->notify_connect(x, port);
+ else
+ return 0;
+}
+
+static inline int
+usb_phy_notify_disconnect(struct usb_phy *x, int port)
+{
+ if (x->notify_disconnect)
+ return x->notify_disconnect(x, port);
+ else
+ return 0;
+}
+
+static inline int
otg_start_srp(struct usb_otg *otg)
{
if (otg && otg->start_srp)
/* for OTG controller drivers (and maybe other stuff) */
extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
+static inline const char *usb_phy_type_string(enum usb_phy_type type)
+{
+ switch (type) {
+ case USB_PHY_TYPE_USB2:
+ return "USB2 PHY";
+ case USB_PHY_TYPE_USB3:
+ return "USB3 PHY";
+ default:
+ return "UNKNOWN PHY TYPE";
+ }
+}
#endif /* __LINUX_USB_OTG_H */
* option:
*
* dma id for dmaengine
+ * The data transfer direction on D0FIFO/D1FIFO should be
+ * fixed for keeping consistency.
+ * So, the platform id settings will be..
+ * .d0_tx_id = xx_TX,
+ * .d1_rx_id = xx_RX,
+ * or
+ * .d1_tx_id = xx_TX,
+ * .d0_rx_id = xx_RX,
*/
int d0_tx_id;
int d0_rx_id;
IU_ID_WRITE_READY = 0x07,
};
+enum {
+ TMF_ABORT_TASK = 0x01,
+ TMF_ABORT_TASK_SET = 0x02,
+ TMF_CLEAR_TASK_SET = 0x04,
+ TMF_LOGICAL_UNIT_RESET = 0x08,
+ TMF_I_T_NEXUS_RESET = 0x10,
+ TMF_CLEAR_ACA = 0x40,
+ TMF_QUERY_TASK = 0x80,
+ TMF_QUERY_TASK_SET = 0x81,
+ TMF_QUERY_ASYNC_EVENT = 0x82,
+};
+
+enum {
+ RC_TMF_COMPLETE = 0x00,
+ RC_INVALID_INFO_UNIT = 0x02,
+ RC_TMF_NOT_SUPPORTED = 0x04,
+ RC_TMF_FAILED = 0x05,
+ RC_TMF_SUCCEEDED = 0x08,
+ RC_INCORRECT_LUN = 0x09,
+ RC_OVERLAPPED_TAG = 0x0a,
+};
+
struct command_iu {
__u8 iu_id;
__u8 rsvd1;
__u8 cdb[16]; /* XXX: Overflow-checking tools may misunderstand */
};
+struct task_mgmt_iu {
+ __u8 iu_id;
+ __u8 rsvd1;
+ __be16 tag;
+ __u8 function;
+ __u8 rsvd2;
+ __be16 task_tag;
+ struct scsi_lun lun;
+};
+
/*
* Also used for the Read Ready and Write Ready IUs since they have the
* same first four bytes
__u8 sense[SCSI_SENSE_BUFFERSIZE];
};
+struct response_ui {
+ __u8 iu_id;
+ __u8 rsvd1;
+ __be16 tag;
+ __be16 add_response_info;
+ __u8 response_code;
+};
+
struct usb_pipe_usage_descriptor {
__u8 bLength;
__u8 bDescriptorType;
char port [127]; /* e.g. port 3 connects to device 27 */
};
+/* Device capability flags */
+#define USBDEVFS_CAP_ZERO_PACKET 0x01
+#define USBDEVFS_CAP_BULK_CONTINUATION 0x02
+#define USBDEVFS_CAP_NO_PACKET_SIZE_LIM 0x04
+#define USBDEVFS_CAP_BULK_SCATTER_GATHER 0x08
+
#ifdef __KERNEL__
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
#define USBDEVFS_CONNECT _IO('U', 23)
#define USBDEVFS_CLAIM_PORT _IOR('U', 24, unsigned int)
#define USBDEVFS_RELEASE_PORT _IOR('U', 25, unsigned int)
+#define USBDEVFS_GET_CAPABILITIES _IOR('U', 26, __u32)
+
#endif /* _LINUX_USBDEVICE_FS_H */
}
/* USB is special because the bcdDevice can be matched against a numeric range */
-/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
+/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
static void do_usb_entry(struct usb_device_id *id,
unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
unsigned char range_lo, unsigned char range_hi,
ADD(alias, "ip",
id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
id->bInterfaceProtocol);
+ ADD(alias, "in",
+ id->match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
+ id->bInterfaceNumber);
add_wildcard(alias);
buf_printf(&mod->dev_table_buf,
/* for easy use when hotplugging */
device = getenv ("DEVICE");
- while ((c = getopt (argc, argv, "D:aA:c:g:hns:t:v:")) != EOF)
+ while ((c = getopt (argc, argv, "D:aA:c:g:hlns:t:v:")) != EOF)
switch (c) {
case 'D': /* device, if only one */
device = optarg;
case 'h':
default:
usage:
- fprintf (stderr, "usage: %s [-n] [-D dev | -a | -A usbfs-dir]\n"
- "\t[-c iterations] [-t testnum]\n"
- "\t[-s packetsize] [-g sglen] [-v vary]\n",
- argv [0]);
+ fprintf (stderr,
+ "usage: %s [options]\n"
+ "Options:\n"
+ "\t-D dev only test specific device\n"
+ "\t-A usbfs-dir\n"
+ "\t-a test all recognized devices\n"
+ "\t-l loop forever(for stress test)\n"
+ "\t-t testnum only run specified case\n"
+ "\t-n no test running, show devices to be tested\n"
+ "Case arguments:\n"
+ "\t-c iterations default 1000\n"
+ "\t-s packetsize default 512\n"
+ "\t-g sglen default 32\n"
+ "\t-v vary default 512\n",
+ argv[0]);
return 1;
}
if (optind != argc)
projects / platform / kernel / linux-rpi.git / commitdiff