X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fusb%2Fdwc3%2Fdwc3-generic.c;h=a936f71d2e5d116d9891b1cfb764a4cee2142a07;hb=5a1a8a63be8f7262a300eddafb18020926b12fb6;hp=ca63eac3d98e11a997f1f5f30d097e2373e4c9a0;hpb=bea1649cd91626177ea9396c321fded3c6300335;p=platform%2Fkernel%2Fu-boot.git diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c index ca63eac..a936f71 100644 --- a/drivers/usb/dwc3/dwc3-generic.c +++ b/drivers/usb/dwc3/dwc3-generic.c @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +// SPDX-License-Identifier: GPL-2.0 /* * Generic DWC3 Glue layer * @@ -8,72 +8,118 @@ */ #include +#include +#include #include #include #include -#include -#include +#include +#include +#include #include #include #include #include #include "core.h" #include "gadget.h" -#include "linux-compat.h" +#include +#include +#include -DECLARE_GLOBAL_DATA_PTR; +struct dwc3_glue_data { + struct clk_bulk clks; + struct reset_ctl_bulk resets; + fdt_addr_t regs; +}; + +struct dwc3_generic_plat { + fdt_addr_t base; + u32 maximum_speed; + enum usb_dr_mode dr_mode; +}; + +struct dwc3_generic_priv { + void *base; + struct dwc3 dwc3; + struct phy_bulk phys; +}; + +struct dwc3_generic_host_priv { + struct xhci_ctrl xhci_ctrl; + struct dwc3_generic_priv gen_priv; +}; -int usb_gadget_handle_interrupts(int index) +static int dwc3_generic_probe(struct udevice *dev, + struct dwc3_generic_priv *priv) { - struct dwc3 *priv; - struct udevice *dev; - int ret; + int rc; + struct dwc3_generic_plat *plat = dev_get_platdata(dev); + struct dwc3 *dwc3 = &priv->dwc3; + struct dwc3_glue_data *glue = dev_get_platdata(dev->parent); - ret = uclass_first_device(UCLASS_USB_DEV_GENERIC, &dev); - if (!dev || ret) { - pr_err("No USB device found\n"); - return -ENODEV; + dwc3->dev = dev; + dwc3->maximum_speed = plat->maximum_speed; + dwc3->dr_mode = plat->dr_mode; +#if CONFIG_IS_ENABLED(OF_CONTROL) + dwc3_of_parse(dwc3); +#endif + + /* + * It must hold whole USB3.0 OTG controller in resetting to hold pipe + * power state in P2 before initializing TypeC PHY on RK3399 platform. + */ + if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3")) { + reset_assert_bulk(&glue->resets); + udelay(1); } - priv = dev_get_priv(dev); + rc = dwc3_setup_phy(dev, &priv->phys); + if (rc && rc != -ENOTSUPP) + return rc; - dwc3_gadget_uboot_handle_interrupt(priv); + if (device_is_compatible(dev->parent, "rockchip,rk3399-dwc3")) + reset_deassert_bulk(&glue->resets); - return 0; -} + priv->base = map_physmem(plat->base, DWC3_OTG_REGS_END, MAP_NOCACHE); + dwc3->regs = priv->base + DWC3_GLOBALS_REGS_START; -static int dwc3_generic_peripheral_probe(struct udevice *dev) -{ - struct dwc3 *priv = dev_get_priv(dev); - return dwc3_init(priv); + rc = dwc3_init(dwc3); + if (rc) { + unmap_physmem(priv->base, MAP_NOCACHE); + return rc; + } + + return 0; } -static int dwc3_generic_peripheral_remove(struct udevice *dev) +static int dwc3_generic_remove(struct udevice *dev, + struct dwc3_generic_priv *priv) { - struct dwc3 *priv = dev_get_priv(dev); + struct dwc3 *dwc3 = &priv->dwc3; - dwc3_remove(priv); + dwc3_remove(dwc3); + dwc3_shutdown_phy(dev, &priv->phys); + unmap_physmem(dwc3->regs, MAP_NOCACHE); return 0; } -static int dwc3_generic_peripheral_ofdata_to_platdata(struct udevice *dev) +static int dwc3_generic_ofdata_to_platdata(struct udevice *dev) { - struct dwc3 *priv = dev_get_priv(dev); - int node = dev_of_offset(dev); + struct dwc3_generic_plat *plat = dev_get_platdata(dev); + ofnode node = dev->node; - priv->regs = (void *)devfdt_get_addr(dev); - priv->regs += DWC3_GLOBALS_REGS_START; + plat->base = dev_read_addr(dev); - priv->maximum_speed = usb_get_maximum_speed(node); - if (priv->maximum_speed == USB_SPEED_UNKNOWN) { - pr_err("Invalid usb maximum speed\n"); - return -ENODEV; + plat->maximum_speed = usb_get_maximum_speed(node); + if (plat->maximum_speed == USB_SPEED_UNKNOWN) { + pr_info("No USB maximum speed specified. Using super speed\n"); + plat->maximum_speed = USB_SPEED_SUPER; } - priv->dr_mode = usb_get_dr_mode(node); - if (priv->dr_mode == USB_DR_MODE_UNKNOWN) { + plat->dr_mode = usb_get_dr_mode(node); + if (plat->dr_mode == USB_DR_MODE_UNKNOWN) { pr_err("Invalid usb mode setup\n"); return -ENODEV; } @@ -81,59 +127,214 @@ static int dwc3_generic_peripheral_ofdata_to_platdata(struct udevice *dev) return 0; } -static int dwc3_generic_peripheral_bind(struct udevice *dev) +#if CONFIG_IS_ENABLED(DM_USB_GADGET) +int dm_usb_gadget_handle_interrupts(struct udevice *dev) +{ + struct dwc3_generic_priv *priv = dev_get_priv(dev); + struct dwc3 *dwc3 = &priv->dwc3; + + dwc3_gadget_uboot_handle_interrupt(dwc3); + + return 0; +} + +static int dwc3_generic_peripheral_probe(struct udevice *dev) +{ + struct dwc3_generic_priv *priv = dev_get_priv(dev); + + return dwc3_generic_probe(dev, priv); +} + +static int dwc3_generic_peripheral_remove(struct udevice *dev) { - return device_probe(dev); + struct dwc3_generic_priv *priv = dev_get_priv(dev); + + return dwc3_generic_remove(dev, priv); } U_BOOT_DRIVER(dwc3_generic_peripheral) = { .name = "dwc3-generic-peripheral", - .id = UCLASS_USB_DEV_GENERIC, - .ofdata_to_platdata = dwc3_generic_peripheral_ofdata_to_platdata, + .id = UCLASS_USB_GADGET_GENERIC, + .ofdata_to_platdata = dwc3_generic_ofdata_to_platdata, .probe = dwc3_generic_peripheral_probe, .remove = dwc3_generic_peripheral_remove, - .bind = dwc3_generic_peripheral_bind, - .platdata_auto_alloc_size = sizeof(struct usb_platdata), - .priv_auto_alloc_size = sizeof(struct dwc3), - .flags = DM_FLAG_ALLOC_PRIV_DMA, + .priv_auto_alloc_size = sizeof(struct dwc3_generic_priv), + .platdata_auto_alloc_size = sizeof(struct dwc3_generic_plat), }; +#endif -static int dwc3_generic_bind(struct udevice *parent) +#if defined(CONFIG_SPL_USB_HOST_SUPPORT) || !defined(CONFIG_SPL_BUILD) +static int dwc3_generic_host_probe(struct udevice *dev) { - const void *fdt = gd->fdt_blob; - int node; + struct xhci_hcor *hcor; + struct xhci_hccr *hccr; + struct dwc3_generic_host_priv *priv = dev_get_priv(dev); + int rc; + + rc = dwc3_generic_probe(dev, &priv->gen_priv); + if (rc) + return rc; + + hccr = (struct xhci_hccr *)priv->gen_priv.base; + hcor = (struct xhci_hcor *)(priv->gen_priv.base + + HC_LENGTH(xhci_readl(&(hccr)->cr_capbase))); + + return xhci_register(dev, hccr, hcor); +} + +static int dwc3_generic_host_remove(struct udevice *dev) +{ + struct dwc3_generic_host_priv *priv = dev_get_priv(dev); + int rc; + + rc = xhci_deregister(dev); + if (rc) + return rc; + + return dwc3_generic_remove(dev, &priv->gen_priv); +} + +U_BOOT_DRIVER(dwc3_generic_host) = { + .name = "dwc3-generic-host", + .id = UCLASS_USB, + .ofdata_to_platdata = dwc3_generic_ofdata_to_platdata, + .probe = dwc3_generic_host_probe, + .remove = dwc3_generic_host_remove, + .priv_auto_alloc_size = sizeof(struct dwc3_generic_host_priv), + .platdata_auto_alloc_size = sizeof(struct dwc3_generic_plat), + .ops = &xhci_usb_ops, + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; +#endif + +struct dwc3_glue_ops { + void (*select_dr_mode)(struct udevice *dev, int index, + enum usb_dr_mode mode); +}; + +void dwc3_ti_select_dr_mode(struct udevice *dev, int index, + enum usb_dr_mode mode) +{ +#define USBOTGSS_UTMI_OTG_STATUS 0x0084 +#define USBOTGSS_UTMI_OTG_OFFSET 0x0480 + +/* UTMI_OTG_STATUS REGISTER */ +#define USBOTGSS_UTMI_OTG_STATUS_SW_MODE BIT(31) +#define USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT BIT(9) +#define USBOTGSS_UTMI_OTG_STATUS_TXBITSTUFFENABLE BIT(8) +#define USBOTGSS_UTMI_OTG_STATUS_IDDIG BIT(4) +#define USBOTGSS_UTMI_OTG_STATUS_SESSEND BIT(3) +#define USBOTGSS_UTMI_OTG_STATUS_SESSVALID BIT(2) +#define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID BIT(1) +enum dwc3_omap_utmi_mode { + DWC3_OMAP_UTMI_MODE_UNKNOWN = 0, + DWC3_OMAP_UTMI_MODE_HW, + DWC3_OMAP_UTMI_MODE_SW, +}; + + u32 use_id_pin; + u32 host_mode; + u32 reg; + u32 utmi_mode; + u32 utmi_status_offset = USBOTGSS_UTMI_OTG_STATUS; + + struct dwc3_glue_data *glue = dev_get_platdata(dev); + void *base = map_physmem(glue->regs, 0x10000, MAP_NOCACHE); + + if (device_is_compatible(dev, "ti,am437x-dwc3")) + utmi_status_offset += USBOTGSS_UTMI_OTG_OFFSET; + + utmi_mode = dev_read_u32_default(dev, "utmi-mode", + DWC3_OMAP_UTMI_MODE_UNKNOWN); + if (utmi_mode != DWC3_OMAP_UTMI_MODE_HW) { + debug("%s: OTG is not supported. defaulting to PERIPHERAL\n", + dev->name); + mode = USB_DR_MODE_PERIPHERAL; + } + + switch (mode) { + case USB_DR_MODE_PERIPHERAL: + use_id_pin = 0; + host_mode = 0; + break; + case USB_DR_MODE_HOST: + use_id_pin = 0; + host_mode = 1; + break; + case USB_DR_MODE_OTG: + default: + use_id_pin = 1; + host_mode = 0; + break; + } + + reg = readl(base + utmi_status_offset); + + reg &= ~(USBOTGSS_UTMI_OTG_STATUS_SW_MODE); + if (!use_id_pin) + reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE; + + writel(reg, base + utmi_status_offset); + + reg &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSEND | + USBOTGSS_UTMI_OTG_STATUS_VBUSVALID | + USBOTGSS_UTMI_OTG_STATUS_IDDIG); + + reg |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID | + USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; + + if (!host_mode) + reg |= USBOTGSS_UTMI_OTG_STATUS_IDDIG | + USBOTGSS_UTMI_OTG_STATUS_VBUSVALID; + + writel(reg, base + utmi_status_offset); + + unmap_physmem(base, MAP_NOCACHE); +} + +struct dwc3_glue_ops ti_ops = { + .select_dr_mode = dwc3_ti_select_dr_mode, +}; + +static int dwc3_glue_bind(struct udevice *parent) +{ + ofnode node; int ret; - for (node = fdt_first_subnode(fdt, dev_of_offset(parent)); node > 0; - node = fdt_next_subnode(fdt, node)) { - const char *name = fdt_get_name(fdt, node, NULL); + ofnode_for_each_subnode(node, parent->node) { + const char *name = ofnode_get_name(node); enum usb_dr_mode dr_mode; struct udevice *dev; - const char *driver; + const char *driver = NULL; debug("%s: subnode name: %s\n", __func__, name); - if (strncmp(name, "dwc3@", 4)) - continue; dr_mode = usb_get_dr_mode(node); switch (dr_mode) { case USB_DR_MODE_PERIPHERAL: case USB_DR_MODE_OTG: +#if CONFIG_IS_ENABLED(DM_USB_GADGET) debug("%s: dr_mode: OTG or Peripheral\n", __func__); driver = "dwc3-generic-peripheral"; +#endif break; +#if defined(CONFIG_SPL_USB_HOST_SUPPORT) || !defined(CONFIG_SPL_BUILD) case USB_DR_MODE_HOST: debug("%s: dr_mode: HOST\n", __func__); driver = "dwc3-generic-host"; break; +#endif default: debug("%s: unsupported dr_mode\n", __func__); return -ENODEV; }; + if (!driver) + continue; + ret = device_bind_driver_to_node(parent, driver, name, - offset_to_ofnode(node), &dev); + node, &dev); if (ret) { debug("%s: not able to bind usb device mode\n", __func__); @@ -144,14 +345,120 @@ static int dwc3_generic_bind(struct udevice *parent) return 0; } -static const struct udevice_id dwc3_generic_ids[] = { +static int dwc3_glue_reset_init(struct udevice *dev, + struct dwc3_glue_data *glue) +{ + int ret; + + ret = reset_get_bulk(dev, &glue->resets); + if (ret == -ENOTSUPP || ret == -ENOENT) + return 0; + else if (ret) + return ret; + + ret = reset_deassert_bulk(&glue->resets); + if (ret) { + reset_release_bulk(&glue->resets); + return ret; + } + + return 0; +} + +static int dwc3_glue_clk_init(struct udevice *dev, + struct dwc3_glue_data *glue) +{ + int ret; + + ret = clk_get_bulk(dev, &glue->clks); + if (ret == -ENOSYS || ret == -ENOENT) + return 0; + if (ret) + return ret; + +#if CONFIG_IS_ENABLED(CLK) + ret = clk_enable_bulk(&glue->clks); + if (ret) { + clk_release_bulk(&glue->clks); + return ret; + } +#endif + + return 0; +} + +static int dwc3_glue_probe(struct udevice *dev) +{ + struct dwc3_glue_ops *ops = (struct dwc3_glue_ops *)dev_get_driver_data(dev); + struct dwc3_glue_data *glue = dev_get_platdata(dev); + struct udevice *child = NULL; + int index = 0; + int ret; + + glue->regs = dev_read_addr(dev); + + ret = dwc3_glue_clk_init(dev, glue); + if (ret) + return ret; + + ret = dwc3_glue_reset_init(dev, glue); + if (ret) + return ret; + + ret = device_find_first_child(dev, &child); + if (ret) + return ret; + + if (glue->resets.count == 0) { + ret = dwc3_glue_reset_init(child, glue); + if (ret) + return ret; + } + + while (child) { + enum usb_dr_mode dr_mode; + + dr_mode = usb_get_dr_mode(child->node); + device_find_next_child(&child); + if (ops && ops->select_dr_mode) + ops->select_dr_mode(dev, index, dr_mode); + index++; + } + + return 0; +} + +static int dwc3_glue_remove(struct udevice *dev) +{ + struct dwc3_glue_data *glue = dev_get_platdata(dev); + + reset_release_bulk(&glue->resets); + + clk_release_bulk(&glue->clks); + + return 0; +} + +static const struct udevice_id dwc3_glue_ids[] = { { .compatible = "xlnx,zynqmp-dwc3" }, + { .compatible = "xlnx,versal-dwc3" }, + { .compatible = "ti,keystone-dwc3"}, + { .compatible = "ti,dwc3", .data = (ulong)&ti_ops }, + { .compatible = "ti,am437x-dwc3", .data = (ulong)&ti_ops }, + { .compatible = "ti,am654-dwc3" }, + { .compatible = "rockchip,rk3328-dwc3" }, + { .compatible = "rockchip,rk3399-dwc3" }, + { .compatible = "qcom,dwc3" }, { } }; U_BOOT_DRIVER(dwc3_generic_wrapper) = { .name = "dwc3-generic-wrapper", - .id = UCLASS_MISC, - .of_match = dwc3_generic_ids, - .bind = dwc3_generic_bind, + .id = UCLASS_NOP, + .of_match = dwc3_glue_ids, + .bind = dwc3_glue_bind, + .probe = dwc3_glue_probe, + .remove = dwc3_glue_remove, + .platdata_auto_alloc_size = sizeof(struct dwc3_glue_data), + };