This pulls in all of the -rc4 fixes into usb-next to sync things up.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
*/
static char *usb_dump_config_descriptor(char *start, char *end,
const struct usb_config_descriptor *desc,
- int active)
+ int active, int speed)
{
+ int mul;
+
if (start > end)
return start;
+ if (speed == USB_SPEED_SUPER)
+ mul = 8;
+ else
+ mul = 2;
start += sprintf(start, format_config,
/* mark active/actual/current cfg. */
active ? '*' : ' ',
desc->bNumInterfaces,
desc->bConfigurationValue,
desc->bmAttributes,
- desc->bMaxPower * 2);
+ desc->bMaxPower * mul);
return start;
}
if (!config)
/* getting these some in 2.3.7; none in 2.3.6 */
return start + sprintf(start, "(null Cfg. desc.)\n");
- start = usb_dump_config_descriptor(start, end, &config->desc, active);
+ start = usb_dump_config_descriptor(start, end, &config->desc, active,
+ speed);
for (i = 0; i < USB_MAXIADS; i++) {
if (config->intf_assoc[i] == NULL)
break;
*/
/* Rule out configs that draw too much bus current */
- if (c->desc.bMaxPower * 2 > udev->bus_mA) {
+ if (usb_get_max_power(udev, c) > udev->bus_mA) {
insufficient_power++;
continue;
}
}
/* starting here, usbcore will pay attention to this root hub */
- rhdev->bus_mA = min(500u, hcd->power_budget);
if ((retval = register_root_hub(hcd)) != 0)
goto err_register_root_hub;
unsigned int pipe;
int maxp, ret, i;
char *message = "out of memory";
+ unsigned unit_load;
+ unsigned full_load;
hub->buffer = kmalloc(sizeof(*hub->buffer), GFP_KERNEL);
if (!hub->buffer) {
}
wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics);
+ if (hub_is_superspeed(hdev)) {
+ unit_load = 150;
+ full_load = 900;
+ } else {
+ unit_load = 100;
+ full_load = 500;
+ }
/* FIXME for USB 3.0, skip for now */
if ((wHubCharacteristics & HUB_CHAR_COMPOUND) &&
goto fail;
}
le16_to_cpus(&hubstatus);
+ hcd = bus_to_hcd(hdev->bus);
if (hdev == hdev->bus->root_hub) {
- if (hdev->bus_mA == 0 || hdev->bus_mA >= 500)
- hub->mA_per_port = 500;
+ if (hcd->power_budget > 0)
+ hdev->bus_mA = hcd->power_budget;
+ else
+ hdev->bus_mA = full_load * hdev->maxchild;
+ if (hdev->bus_mA >= full_load)
+ hub->mA_per_port = full_load;
else {
hub->mA_per_port = hdev->bus_mA;
hub->limited_power = 1;
}
} else if ((hubstatus & (1 << USB_DEVICE_SELF_POWERED)) == 0) {
+ int remaining = hdev->bus_mA -
+ hub->descriptor->bHubContrCurrent;
+
dev_dbg(hub_dev, "hub controller current requirement: %dmA\n",
hub->descriptor->bHubContrCurrent);
hub->limited_power = 1;
- if (hdev->maxchild > 0) {
- int remaining = hdev->bus_mA -
- hub->descriptor->bHubContrCurrent;
- if (remaining < hdev->maxchild * 100)
- dev_warn(hub_dev,
+ if (remaining < hdev->maxchild * unit_load)
+ dev_warn(hub_dev,
"insufficient power available "
"to use all downstream ports\n");
- hub->mA_per_port = 100; /* 7.2.1.1 */
- }
+ hub->mA_per_port = unit_load; /* 7.2.1 */
+
} else { /* Self-powered external hub */
/* FIXME: What about battery-powered external hubs that
* provide less current per port? */
- hub->mA_per_port = 500;
+ hub->mA_per_port = full_load;
}
- if (hub->mA_per_port < 500)
+ if (hub->mA_per_port < full_load)
dev_dbg(hub_dev, "%umA bus power budget for each child\n",
hub->mA_per_port);
/* Update the HCD's internal representation of this hub before khubd
* starts getting port status changes for devices under the hub.
*/
- hcd = bus_to_hcd(hdev->bus);
if (hcd->driver->update_hub_device) {
ret = hcd->driver->update_hub_device(hcd, hdev,
&hub->tt, GFP_KERNEL);
return ret;
/* The port state is unknown until the reset completes. */
- if ((portstatus & USB_PORT_STAT_RESET))
- goto delay;
-
- /*
- * Some buggy devices require a warm reset to be issued even
- * when the port appears not to be connected.
- */
- if (!warm) {
- /*
- * Some buggy devices can cause an NEC host controller
- * to transition to the "Error" state after a hot port
- * reset. This will show up as the port state in
- * "Inactive", and the port may also report a
- * disconnect. Forcing a warm port reset seems to make
- * the device work.
- *
- * See https://bugzilla.kernel.org/show_bug.cgi?id=41752
- */
- if (hub_port_warm_reset_required(hub, portstatus)) {
- int ret;
-
- if ((portchange & USB_PORT_STAT_C_CONNECTION))
- clear_port_feature(hub->hdev, port1,
- USB_PORT_FEAT_C_CONNECTION);
- if (portchange & USB_PORT_STAT_C_LINK_STATE)
- clear_port_feature(hub->hdev, port1,
- USB_PORT_FEAT_C_PORT_LINK_STATE);
- if (portchange & USB_PORT_STAT_C_RESET)
- clear_port_feature(hub->hdev, port1,
- USB_PORT_FEAT_C_RESET);
- dev_dbg(hub->intfdev, "hot reset failed, warm reset port %d\n",
- port1);
- ret = hub_port_reset(hub, port1,
- udev, HUB_BH_RESET_TIME,
- true);
- if ((portchange & USB_PORT_STAT_C_CONNECTION))
- clear_port_feature(hub->hdev, port1,
- USB_PORT_FEAT_C_CONNECTION);
- return ret;
- }
- /* Device went away? */
- if (!(portstatus & USB_PORT_STAT_CONNECTION))
- return -ENOTCONN;
-
- /* bomb out completely if the connection bounced */
- if ((portchange & USB_PORT_STAT_C_CONNECTION))
- return -ENOTCONN;
-
- if ((portstatus & USB_PORT_STAT_ENABLE)) {
- if (hub_is_wusb(hub))
- udev->speed = USB_SPEED_WIRELESS;
- else if (hub_is_superspeed(hub->hdev))
- udev->speed = USB_SPEED_SUPER;
- else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
- udev->speed = USB_SPEED_HIGH;
- else if (portstatus & USB_PORT_STAT_LOW_SPEED)
- udev->speed = USB_SPEED_LOW;
- else
- udev->speed = USB_SPEED_FULL;
- return 0;
- }
- } else {
- if (!(portstatus & USB_PORT_STAT_CONNECTION) ||
- hub_port_warm_reset_required(hub,
- portstatus))
- return -ENOTCONN;
-
- return 0;
- }
+ if (!(portstatus & USB_PORT_STAT_RESET))
+ break;
-delay:
/* switch to the long delay after two short delay failures */
if (delay_time >= 2 * HUB_SHORT_RESET_TIME)
delay = HUB_LONG_RESET_TIME;
port1, warm ? "warm " : "", delay);
}
- return -EBUSY;
+ if ((portstatus & USB_PORT_STAT_RESET))
+ return -EBUSY;
+
+ if (hub_port_warm_reset_required(hub, portstatus))
+ return -ENOTCONN;
+
+ /* Device went away? */
+ if (!(portstatus & USB_PORT_STAT_CONNECTION))
+ return -ENOTCONN;
+
+ /* bomb out completely if the connection bounced. A USB 3.0
+ * connection may bounce if multiple warm resets were issued,
+ * but the device may have successfully re-connected. Ignore it.
+ */
+ if (!hub_is_superspeed(hub->hdev) &&
+ (portchange & USB_PORT_STAT_C_CONNECTION))
+ return -ENOTCONN;
+
+ if (!(portstatus & USB_PORT_STAT_ENABLE))
+ return -EBUSY;
+
+ if (!udev)
+ return 0;
+
+ if (hub_is_wusb(hub))
+ udev->speed = USB_SPEED_WIRELESS;
+ else if (hub_is_superspeed(hub->hdev))
+ udev->speed = USB_SPEED_SUPER;
+ else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
+ udev->speed = USB_SPEED_HIGH;
+ else if (portstatus & USB_PORT_STAT_LOW_SPEED)
+ udev->speed = USB_SPEED_LOW;
+ else
+ udev->speed = USB_SPEED_FULL;
+ return 0;
}
static void hub_port_finish_reset(struct usb_hub *hub, int port1,
- struct usb_device *udev, int *status, bool warm)
+ struct usb_device *udev, int *status)
{
switch (*status) {
case 0:
- if (!warm) {
- struct usb_hcd *hcd;
- /* TRSTRCY = 10 ms; plus some extra */
- msleep(10 + 40);
+ /* TRSTRCY = 10 ms; plus some extra */
+ msleep(10 + 40);
+ if (udev) {
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
update_devnum(udev, 0);
- hcd = bus_to_hcd(udev->bus);
/* The xHC may think the device is already reset,
* so ignore the status.
*/
case -ENODEV:
clear_port_feature(hub->hdev,
port1, USB_PORT_FEAT_C_RESET);
- /* FIXME need disconnect() for NOTATTACHED device */
if (hub_is_superspeed(hub->hdev)) {
clear_port_feature(hub->hdev, port1,
USB_PORT_FEAT_C_BH_PORT_RESET);
clear_port_feature(hub->hdev, port1,
USB_PORT_FEAT_C_PORT_LINK_STATE);
+ clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_CONNECTION);
}
- if (!warm)
+ if (udev)
usb_set_device_state(udev, *status
? USB_STATE_NOTATTACHED
: USB_STATE_DEFAULT);
struct usb_device *udev, unsigned int delay, bool warm)
{
int i, status;
+ u16 portchange, portstatus;
- if (!warm) {
- /* Block EHCI CF initialization during the port reset.
- * Some companion controllers don't like it when they mix.
- */
- down_read(&ehci_cf_port_reset_rwsem);
- } else {
- if (!hub_is_superspeed(hub->hdev)) {
+ if (!hub_is_superspeed(hub->hdev)) {
+ if (warm) {
dev_err(hub->intfdev, "only USB3 hub support "
"warm reset\n");
return -EINVAL;
}
+ /* Block EHCI CF initialization during the port reset.
+ * Some companion controllers don't like it when they mix.
+ */
+ down_read(&ehci_cf_port_reset_rwsem);
+ } else if (!warm) {
+ /*
+ * If the caller hasn't explicitly requested a warm reset,
+ * double check and see if one is needed.
+ */
+ status = hub_port_status(hub, port1,
+ &portstatus, &portchange);
+ if (status < 0)
+ goto done;
+
+ if (hub_port_warm_reset_required(hub, portstatus))
+ warm = true;
}
/* Reset the port */
status);
}
- /* return on disconnect or reset */
+ /* Check for disconnect or reset */
if (status == 0 || status == -ENOTCONN || status == -ENODEV) {
- hub_port_finish_reset(hub, port1, udev, &status, warm);
- goto done;
+ hub_port_finish_reset(hub, port1, udev, &status);
+
+ if (!hub_is_superspeed(hub->hdev))
+ goto done;
+
+ /*
+ * If a USB 3.0 device migrates from reset to an error
+ * state, re-issue the warm reset.
+ */
+ if (hub_port_status(hub, port1,
+ &portstatus, &portchange) < 0)
+ goto done;
+
+ if (!hub_port_warm_reset_required(hub, portstatus))
+ goto done;
+
+ /*
+ * If the port is in SS.Inactive or Compliance Mode, the
+ * hot or warm reset failed. Try another warm reset.
+ */
+ if (!warm) {
+ dev_dbg(hub->intfdev, "hot reset failed, warm reset port %d\n",
+ port1);
+ warm = true;
+ }
}
dev_dbg (hub->intfdev,
port1);
done:
- if (!warm)
+ if (!hub_is_superspeed(hub->hdev))
up_read(&ehci_cf_port_reset_rwsem);
return status;
/* see 7.1.7.6 */
if (hub_is_superspeed(hub->hdev))
- status = set_port_feature(hub->hdev,
- port1 | (USB_SS_PORT_LS_U3 << 3),
- USB_PORT_FEAT_LINK_STATE);
+ status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U3);
else
status = set_port_feature(hub->hdev, port1,
USB_PORT_FEAT_SUSPEND);
/* see 7.1.7.7; affects power usage, but not budgeting */
if (hub_is_superspeed(hub->hdev))
- status = set_port_feature(hub->hdev,
- port1 | (USB_SS_PORT_LS_U0 << 3),
- USB_PORT_FEAT_LINK_STATE);
+ status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U0);
else
status = clear_port_feature(hub->hdev,
port1, USB_PORT_FEAT_SUSPEND);
for (port1 = 1; port1 <= hdev->maxchild; ++port1) {
struct usb_device *udev = hub->ports[port1 - 1]->child;
int delta;
+ unsigned unit_load;
if (!udev)
continue;
+ if (hub_is_superspeed(udev))
+ unit_load = 150;
+ else
+ unit_load = 100;
- /* Unconfigured devices may not use more than 100mA,
- * or 8mA for OTG ports */
+ /*
+ * Unconfigured devices may not use more than one unit load,
+ * or 8mA for OTG ports
+ */
if (udev->actconfig)
- delta = udev->actconfig->desc.bMaxPower * 2;
+ delta = usb_get_max_power(udev, udev->actconfig);
else if (port1 != udev->bus->otg_port || hdev->parent)
- delta = 100;
+ delta = unit_load;
else
delta = 8;
if (delta > hub->mA_per_port)
le16_to_cpu(hub->descriptor->wHubCharacteristics);
struct usb_device *udev;
int status, i;
+ unsigned unit_load;
dev_dbg (hub_dev,
"port %d, status %04x, change %04x, %s\n",
goto done;
return;
}
+ if (hub_is_superspeed(hub->hdev))
+ unit_load = 150;
+ else
+ unit_load = 100;
for (i = 0; i < SET_CONFIG_TRIES; i++) {
* on the parent.
*/
if (udev->descriptor.bDeviceClass == USB_CLASS_HUB
- && udev->bus_mA <= 100) {
+ && udev->bus_mA <= unit_load) {
u16 devstat;
status = usb_get_status(udev, USB_RECIP_DEVICE, 0,
*/
if (hub_port_warm_reset_required(hub, portstatus)) {
int status;
+ struct usb_device *udev =
+ hub->ports[i - 1]->child;
dev_dbg(hub_dev, "warm reset port %d\n", i);
- status = hub_port_reset(hub, i, NULL,
- HUB_BH_RESET_TIME, true);
- if (status < 0)
- hub_port_disable(hub, i, 1);
+ if (!udev) {
+ status = hub_port_reset(hub, i,
+ NULL, HUB_BH_RESET_TIME,
+ true);
+ if (status < 0)
+ hub_port_disable(hub, i, 1);
+ } else {
+ usb_lock_device(udev);
+ status = usb_reset_device(udev);
+ usb_unlock_device(udev);
+ }
connect_change = 0;
}
}
}
- i = dev->bus_mA - cp->desc.bMaxPower * 2;
+ i = dev->bus_mA - usb_get_max_power(dev, cp);
if (i < 0)
dev_warn(&dev->dev, "new config #%d exceeds power "
"limit by %dmA\n",
#include "usb.h"
/* Active configuration fields */
-#define usb_actconfig_show(field, multiplier, format_string) \
+#define usb_actconfig_show(field, format_string) \
static ssize_t show_##field(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
actconfig = udev->actconfig; \
if (actconfig) \
return sprintf(buf, format_string, \
- actconfig->desc.field * multiplier); \
+ actconfig->desc.field); \
else \
return 0; \
} \
-#define usb_actconfig_attr(field, multiplier, format_string) \
-usb_actconfig_show(field, multiplier, format_string) \
-static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
+#define usb_actconfig_attr(field, format_string) \
+ usb_actconfig_show(field, format_string) \
+ static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
+
+usb_actconfig_attr(bNumInterfaces, "%2d\n")
+usb_actconfig_attr(bmAttributes, "%2x\n")
-usb_actconfig_attr(bNumInterfaces, 1, "%2d\n")
-usb_actconfig_attr(bmAttributes, 1, "%2x\n")
-usb_actconfig_attr(bMaxPower, 2, "%3dmA\n")
+static ssize_t show_bMaxPower(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_device *udev;
+ struct usb_host_config *actconfig;
+
+ udev = to_usb_device(dev);
+ actconfig = udev->actconfig;
+ if (!actconfig)
+ return 0;
+ return sprintf(buf, "%dmA\n", usb_get_max_power(udev, actconfig));
+}
+static DEVICE_ATTR(bMaxPower, S_IRUGO, show_bMaxPower, NULL);
static ssize_t show_configuration_string(struct device *dev,
struct device_attribute *attr, char *buf)
static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL);
/* configuration value is always present, and r/w */
-usb_actconfig_show(bConfigurationValue, 1, "%u\n");
+usb_actconfig_show(bConfigurationValue, "%u\n");
static ssize_t
set_bConfigurationValue(struct device *dev, struct device_attribute *attr,
extern int usb_set_configuration(struct usb_device *dev, int configuration);
extern int usb_choose_configuration(struct usb_device *udev);
+static inline unsigned usb_get_max_power(struct usb_device *udev,
+ struct usb_host_config *c)
+{
+ /* SuperSpeed power is in 8 mA units; others are in 2 mA units */
+ unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2);
+
+ return c->desc.bMaxPower * mul;
+}
+
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,
struct usb_hcd *hcd;
struct resource *res;
int irq, ret;
- unsigned int flags;
struct ehci_mxc_priv *priv;
struct device *dev = &pdev->dev;
struct ehci_hcd *ehci;
if (ret)
goto err_add;
- if (pdata->otg) {
- /*
- * efikamx and efikasb have some hardware bug which is
- * preventing usb to work unless CHRGVBUS is set.
- * It's in violation of USB specs
- */
- if (machine_is_mx51_efikamx() || machine_is_mx51_efikasb()) {
- flags = usb_phy_io_read(pdata->otg,
- ULPI_OTG_CTRL);
- flags |= ULPI_OTG_CTRL_CHRGVBUS;
- ret = usb_phy_io_write(pdata->otg, flags,
- ULPI_OTG_CTRL);
- if (ret) {
- dev_err(dev, "unable to set CHRVBUS\n");
- goto err_add;
- }
- }
- }
-
return 0;
err_add:
// ASSERT (urb->hcpriv != 0);
urb_free_priv (ohci, urb->hcpriv);
+ urb->hcpriv = NULL;
if (likely(status == -EINPROGRESS))
status = 0;
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
u32 status;
- union xhci_trb *trb;
u64 temp_64;
union xhci_trb *event_ring_deq;
dma_addr_t deq;
spin_lock(&xhci->lock);
- trb = xhci->event_ring->dequeue;
/* Check if the xHC generated the interrupt, or the irq is shared */
status = xhci_readl(xhci, &xhci->op_regs->status);
if (status == 0xffffffff)
help
Say Y here if you need EZUSB device support.
(Cypress FX/FX2/FX2LP microcontrollers)
+
+config USB_HSIC_USB3503
+ tristate "USB3503 HSIC to USB20 Driver"
+ depends on I2C
+ help
+ This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver.
obj-$(CONFIG_USB_USS720) += uss720.o
obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o
obj-$(CONFIG_USB_YUREX) += yurex.o
+obj-$(CONFIG_USB_HSIC_USB3503) += usb3503.o
obj-$(CONFIG_USB_SISUSBVGA) += sisusbvga/
--- /dev/null
+/*
+ * Driver for SMSC USB3503 USB 2.0 hub controller driver
+ *
+ * Copyright (c) 2012-2013 Dongjin Kim (tobetter@gmail.com)
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/usb3503.h>
+
+#define USB3503_VIDL 0x00
+#define USB3503_VIDM 0x01
+#define USB3503_PIDL 0x02
+#define USB3503_PIDM 0x03
+#define USB3503_DIDL 0x04
+#define USB3503_DIDM 0x05
+
+#define USB3503_CFG1 0x06
+#define USB3503_SELF_BUS_PWR (1 << 7)
+
+#define USB3503_CFG2 0x07
+#define USB3503_CFG3 0x08
+#define USB3503_NRD 0x09
+
+#define USB3503_PDS 0x0a
+#define USB3503_PORT1 (1 << 1)
+#define USB3503_PORT2 (1 << 2)
+#define USB3503_PORT3 (1 << 3)
+
+#define USB3503_SP_ILOCK 0xe7
+#define USB3503_SPILOCK_CONNECT (1 << 1)
+#define USB3503_SPILOCK_CONFIG (1 << 0)
+
+#define USB3503_CFGP 0xee
+#define USB3503_CLKSUSP (1 << 7)
+
+struct usb3503 {
+ enum usb3503_mode mode;
+ struct i2c_client *client;
+ int gpio_intn;
+ int gpio_reset;
+ int gpio_connect;
+};
+
+static int usb3503_write_register(struct i2c_client *client,
+ char reg, char data)
+{
+ return i2c_smbus_write_byte_data(client, reg, data);
+}
+
+static int usb3503_read_register(struct i2c_client *client, char reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int usb3503_set_bits(struct i2c_client *client, char reg, char req)
+{
+ int err;
+
+ err = usb3503_read_register(client, reg);
+ if (err < 0)
+ return err;
+
+ err = usb3503_write_register(client, reg, err | req);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int usb3503_clear_bits(struct i2c_client *client, char reg, char req)
+{
+ int err;
+
+ err = usb3503_read_register(client, reg);
+ if (err < 0)
+ return err;
+
+ err = usb3503_write_register(client, reg, err & ~req);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int usb3503_reset(int gpio_reset, int state)
+{
+ if (gpio_is_valid(gpio_reset))
+ gpio_set_value(gpio_reset, state);
+
+ /* Wait RefClk when RESET_N is released, otherwise Hub will
+ * not transition to Hub Communication Stage.
+ */
+ if (state)
+ msleep(100);
+
+ return 0;
+}
+
+static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode)
+{
+ struct i2c_client *i2c = hub->client;
+ int err = 0;
+
+ switch (mode) {
+ case USB3503_MODE_HUB:
+ usb3503_reset(hub->gpio_reset, 1);
+
+ /* SP_ILOCK: set connect_n, config_n for config */
+ err = usb3503_write_register(i2c, USB3503_SP_ILOCK,
+ (USB3503_SPILOCK_CONNECT
+ | USB3503_SPILOCK_CONFIG));
+ if (err < 0) {
+ dev_err(&i2c->dev, "SP_ILOCK failed (%d)\n", err);
+ goto err_hubmode;
+ }
+
+ /* PDS : Port2,3 Disable For Self Powered Operation */
+ err = usb3503_set_bits(i2c, USB3503_PDS,
+ (USB3503_PORT2 | USB3503_PORT3));
+ if (err < 0) {
+ dev_err(&i2c->dev, "PDS failed (%d)\n", err);
+ goto err_hubmode;
+ }
+
+ /* CFG1 : SELF_BUS_PWR -> Self-Powerd operation */
+ err = usb3503_set_bits(i2c, USB3503_CFG1, USB3503_SELF_BUS_PWR);
+ if (err < 0) {
+ dev_err(&i2c->dev, "CFG1 failed (%d)\n", err);
+ goto err_hubmode;
+ }
+
+ /* SP_LOCK: clear connect_n, config_n for hub connect */
+ err = usb3503_clear_bits(i2c, USB3503_SP_ILOCK,
+ (USB3503_SPILOCK_CONNECT
+ | USB3503_SPILOCK_CONFIG));
+ if (err < 0) {
+ dev_err(&i2c->dev, "SP_ILOCK failed (%d)\n", err);
+ goto err_hubmode;
+ }
+
+ hub->mode = mode;
+ dev_info(&i2c->dev, "switched to HUB mode\n");
+ break;
+
+ case USB3503_MODE_STANDBY:
+ usb3503_reset(hub->gpio_reset, 0);
+
+ hub->mode = mode;
+ dev_info(&i2c->dev, "switched to STANDBY mode\n");
+ break;
+
+ default:
+ dev_err(&i2c->dev, "unknown mode is request\n");
+ err = -EINVAL;
+ break;
+ }
+
+err_hubmode:
+ return err;
+}
+
+static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
+{
+ struct usb3503_platform_data *pdata = i2c->dev.platform_data;
+ struct usb3503 *hub;
+ int err = -ENOMEM;
+
+ hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL);
+ if (!hub) {
+ dev_err(&i2c->dev, "private data alloc fail\n");
+ return err;
+ }
+
+ i2c_set_clientdata(i2c, hub);
+ hub->client = i2c;
+
+ if (!pdata) {
+ dev_dbg(&i2c->dev, "missing platform data\n");
+ goto err_out;
+ } else {
+ hub->gpio_intn = pdata->gpio_intn;
+ hub->gpio_connect = pdata->gpio_connect;
+ hub->gpio_reset = pdata->gpio_reset;
+ hub->mode = pdata->initial_mode;
+ }
+
+ if (gpio_is_valid(hub->gpio_intn)) {
+ err = gpio_request_one(hub->gpio_intn,
+ GPIOF_OUT_INIT_HIGH, "usb3503 intn");
+ if (err) {
+ dev_err(&i2c->dev,
+ "unable to request GPIO %d as connect pin (%d)\n",
+ hub->gpio_intn, err);
+ goto err_out;
+ }
+ }
+
+ if (gpio_is_valid(hub->gpio_connect)) {
+ err = gpio_request_one(hub->gpio_connect,
+ GPIOF_OUT_INIT_HIGH, "usb3503 connect");
+ if (err) {
+ dev_err(&i2c->dev,
+ "unable to request GPIO %d as connect pin (%d)\n",
+ hub->gpio_connect, err);
+ goto err_gpio_connect;
+ }
+ }
+
+ if (gpio_is_valid(hub->gpio_reset)) {
+ err = gpio_request_one(hub->gpio_reset,
+ GPIOF_OUT_INIT_LOW, "usb3503 reset");
+ if (err) {
+ dev_err(&i2c->dev,
+ "unable to request GPIO %d as reset pin (%d)\n",
+ hub->gpio_reset, err);
+ goto err_gpio_reset;
+ }
+ }
+
+ usb3503_switch_mode(hub, pdata->initial_mode);
+
+ dev_info(&i2c->dev, "%s: probed on %s mode\n", __func__,
+ (hub->mode == USB3503_MODE_HUB) ? "hub" : "standby");
+
+ return 0;
+
+err_gpio_reset:
+ if (gpio_is_valid(hub->gpio_connect))
+ gpio_free(hub->gpio_connect);
+err_gpio_connect:
+ if (gpio_is_valid(hub->gpio_intn))
+ gpio_free(hub->gpio_intn);
+err_out:
+ kfree(hub);
+
+ return err;
+}
+
+static int usb3503_remove(struct i2c_client *i2c)
+{
+ struct usb3503 *hub = i2c_get_clientdata(i2c);
+
+ if (gpio_is_valid(hub->gpio_intn))
+ gpio_free(hub->gpio_intn);
+ if (gpio_is_valid(hub->gpio_connect))
+ gpio_free(hub->gpio_connect);
+ if (gpio_is_valid(hub->gpio_reset))
+ gpio_free(hub->gpio_reset);
+
+ kfree(hub);
+
+ return 0;
+}
+
+static const struct i2c_device_id usb3503_id[] = {
+ { USB3503_I2C_NAME, 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, usb3503_id);
+
+static struct i2c_driver usb3503_driver = {
+ .driver = {
+ .name = USB3503_I2C_NAME,
+ },
+ .probe = usb3503_probe,
+ .remove = usb3503_remove,
+ .id_table = usb3503_id,
+};
+
+static int __init usb3503_init(void)
+{
+ return i2c_add_driver(&usb3503_driver);
+}
+
+static void __exit usb3503_exit(void)
+{
+ i2c_del_driver(&usb3503_driver);
+}
+
+module_init(usb3503_init);
+module_exit(usb3503_exit);
+
+MODULE_AUTHOR("Dongjin Kim <tobetter@gmail.com>");
+MODULE_DESCRIPTION("USB3503 USB HUB driver");
+MODULE_LICENSE("GPL");
endpoint = usb_pipeendpoint(urb->pipe);
if (status) {
- dev_dbg(&urb->dev->dev,"%s - nonzero status: %x on endpoint %d.\n",
+ dev_dbg(&urb->dev->dev, "%s - nonzero status: %x on endpoint %d.\n",
__func__, status, endpoint);
return;
}
/*
dev_dbg(&urb->dev->dev,
- "%s %x %x %x %x %x %x %x %x %x %x %x %x", __func__,
+ "%s %x %x %x %x %x %x %x %x %x %x %x %x", __func__,
data[0], data[1], data[2], data[3], data[4], data[5],
data[6], data[7], data[8], data[9], data[10], data[11]);
*/
DATA_OUT_URB_INFLIGHT = (1 << 10),
COMMAND_COMPLETED = (1 << 11),
COMMAND_ABORTED = (1 << 12),
+ UNLINK_DATA_URBS = (1 << 13),
+ IS_IN_WORK_LIST = (1 << 14),
};
/* Overrides scsi_pointer */
static int uas_submit_urbs(struct scsi_cmnd *cmnd,
struct uas_dev_info *devinfo, gfp_t gfp);
static void uas_do_work(struct work_struct *work);
+static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller);
static DECLARE_WORK(uas_work, uas_do_work);
static DEFINE_SPINLOCK(uas_work_lock);
static LIST_HEAD(uas_work_list);
+static void uas_unlink_data_urbs(struct uas_dev_info *devinfo,
+ struct uas_cmd_info *cmdinfo)
+{
+ unsigned long flags;
+
+ /*
+ * The UNLINK_DATA_URBS flag makes sure uas_try_complete
+ * (called by urb completion) doesn't release cmdinfo
+ * underneath us.
+ */
+ spin_lock_irqsave(&devinfo->lock, flags);
+ cmdinfo->state |= UNLINK_DATA_URBS;
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+
+ if (cmdinfo->data_in_urb)
+ usb_unlink_urb(cmdinfo->data_in_urb);
+ if (cmdinfo->data_out_urb)
+ usb_unlink_urb(cmdinfo->data_out_urb);
+
+ spin_lock_irqsave(&devinfo->lock, flags);
+ cmdinfo->state &= ~UNLINK_DATA_URBS;
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+}
+
static void uas_do_work(struct work_struct *work)
{
struct uas_cmd_info *cmdinfo;
struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata;
spin_lock_irqsave(&devinfo->lock, flags);
err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC);
+ if (!err)
+ cmdinfo->state &= ~IS_IN_WORK_LIST;
spin_unlock_irqrestore(&devinfo->lock, flags);
if (err) {
list_del(&cmdinfo->list);
}
}
+static void uas_abort_work(struct uas_dev_info *devinfo)
+{
+ struct uas_cmd_info *cmdinfo;
+ struct uas_cmd_info *temp;
+ struct list_head list;
+ unsigned long flags;
+
+ spin_lock_irq(&uas_work_lock);
+ list_replace_init(&uas_work_list, &list);
+ spin_unlock_irq(&uas_work_lock);
+
+ spin_lock_irqsave(&devinfo->lock, flags);
+ list_for_each_entry_safe(cmdinfo, temp, &list, list) {
+ struct scsi_pointer *scp = (void *)cmdinfo;
+ struct scsi_cmnd *cmnd = container_of(scp,
+ struct scsi_cmnd, SCp);
+ struct uas_dev_info *di = (void *)cmnd->device->hostdata;
+
+ if (di == devinfo) {
+ cmdinfo->state |= COMMAND_ABORTED;
+ cmdinfo->state &= ~IS_IN_WORK_LIST;
+ if (devinfo->resetting) {
+ /* uas_stat_cmplt() will not do that
+ * when a device reset is in
+ * progress */
+ cmdinfo->state &= ~COMMAND_INFLIGHT;
+ }
+ uas_try_complete(cmnd, __func__);
+ } else {
+ /* not our uas device, relink into list */
+ list_del(&cmdinfo->list);
+ spin_lock_irq(&uas_work_lock);
+ list_add_tail(&cmdinfo->list, &uas_work_list);
+ spin_unlock_irq(&uas_work_lock);
+ }
+ }
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+}
+
static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd)
{
struct sense_iu *sense_iu = urb->transfer_buffer;
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%s\n",
+ "%s%s%s%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 & DATA_IN_URB_INFLIGHT) ? " IN" : "",
(ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "",
(ci->state & COMMAND_COMPLETED) ? " done" : "",
- (ci->state & COMMAND_ABORTED) ? " abort" : "");
+ (ci->state & COMMAND_ABORTED) ? " abort" : "",
+ (ci->state & UNLINK_DATA_URBS) ? " unlink": "",
+ (ci->state & IS_IN_WORK_LIST) ? " work" : "");
}
static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller)
WARN_ON(!spin_is_locked(&devinfo->lock));
if (cmdinfo->state & (COMMAND_INFLIGHT |
DATA_IN_URB_INFLIGHT |
- DATA_OUT_URB_INFLIGHT))
+ DATA_OUT_URB_INFLIGHT |
+ UNLINK_DATA_URBS))
return -EBUSY;
BUG_ON(cmdinfo->state & COMMAND_COMPLETED);
cmdinfo->state |= COMMAND_COMPLETED;
if (err) {
spin_lock(&uas_work_lock);
list_add_tail(&cmdinfo->list, &uas_work_list);
+ cmdinfo->state |= IS_IN_WORK_LIST;
spin_unlock(&uas_work_lock);
schedule_work(&uas_work);
}
uas_sense(urb, cmnd);
if (cmnd->result != 0) {
/* cancel data transfers on error */
- if (cmdinfo->state & DATA_IN_URB_INFLIGHT) {
- spin_unlock_irqrestore(&devinfo->lock, flags);
- usb_unlink_urb(cmdinfo->data_in_urb);
- spin_lock_irqsave(&devinfo->lock, flags);
- }
- if (cmdinfo->state & DATA_OUT_URB_INFLIGHT) {
- spin_unlock_irqrestore(&devinfo->lock, flags);
- usb_unlink_urb(cmdinfo->data_out_urb);
- spin_lock_irqsave(&devinfo->lock, flags);
- }
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+ uas_unlink_data_urbs(devinfo, cmdinfo);
+ spin_lock_irqsave(&devinfo->lock, flags);
}
cmdinfo->state &= ~COMMAND_INFLIGHT;
uas_try_complete(cmnd, __func__);
BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer));
+ if (devinfo->resetting) {
+ cmnd->result = DID_ERROR << 16;
+ cmnd->scsi_done(cmnd);
+ return 0;
+ }
+
spin_lock_irqsave(&devinfo->lock, flags);
if (devinfo->cmnd) {
spin_unlock_irqrestore(&devinfo->lock, flags);
}
spin_lock(&uas_work_lock);
list_add_tail(&cmdinfo->list, &uas_work_list);
+ cmdinfo->state |= IS_IN_WORK_LIST;
spin_unlock(&uas_work_lock);
schedule_work(&uas_work);
}
uas_log_cmd_state(cmnd, __func__);
spin_lock_irqsave(&devinfo->lock, flags);
cmdinfo->state |= COMMAND_ABORTED;
- spin_unlock_irqrestore(&devinfo->lock, flags);
- ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK);
+ if (cmdinfo->state & IS_IN_WORK_LIST) {
+ spin_lock(&uas_work_lock);
+ list_del(&cmdinfo->list);
+ cmdinfo->state &= ~IS_IN_WORK_LIST;
+ spin_unlock(&uas_work_lock);
+ }
+ if (cmdinfo->state & COMMAND_INFLIGHT) {
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+ ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK);
+ } else {
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+ uas_unlink_data_urbs(devinfo, cmdinfo);
+ spin_lock_irqsave(&devinfo->lock, flags);
+ uas_try_complete(cmnd, __func__);
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+ ret = SUCCESS;
+ }
return ret;
}
int err;
devinfo->resetting = 1;
+ uas_abort_work(devinfo);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
struct Scsi_Host *shost = usb_get_intfdata(intf);
struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
- scsi_remove_host(shost);
+ devinfo->resetting = 1;
+ uas_abort_work(devinfo);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
+ scsi_remove_host(shost);
uas_free_streams(devinfo);
kfree(devinfo);
}
--- /dev/null
+#ifndef __USB3503_H__
+#define __USB3503_H__
+
+#define USB3503_I2C_NAME "usb3503"
+
+enum usb3503_mode {
+ USB3503_MODE_UNKNOWN,
+ USB3503_MODE_HUB,
+ USB3503_MODE_STANDBY,
+};
+
+struct usb3503_platform_data {
+ enum usb3503_mode initial_mode;
+ int gpio_intn;
+ int gpio_connect;
+ int gpio_reset;
+};
+
+#endif
return handle_testdev (entry) != entry;
}
status = pthread_create (&entry->thread, 0, handle_testdev, entry);
- if (status) {
+ if (status)
perror ("pthread_create");
- continue;
- }
}
if (device) {
struct testdev dev;
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff