// SPDX-License-Identifier: GPL-2.0
/*
- * Cadence USBSS DRD Driver.
+ * Cadence USBSS and USBSSP DRD Driver.
*
* Copyright (C) 2018-2019 Cadence.
* Copyright (C) 2017-2018 NXP
#include <linux/io.h>
#include <linux/pm_runtime.h>
-#include "gadget.h"
#include "core.h"
#include "host-export.h"
-#include "gadget-export.h"
#include "drd.h"
-static int cdns3_idle_init(struct cdns3 *cdns);
+static int cdns_idle_init(struct cdns *cdns);
-static int cdns3_role_start(struct cdns3 *cdns, enum usb_role role)
+static int cdns_role_start(struct cdns *cdns, enum usb_role role)
{
int ret;
if (!cdns->roles[role])
return -ENXIO;
- if (cdns->roles[role]->state == CDNS3_ROLE_STATE_ACTIVE)
+ if (cdns->roles[role]->state == CDNS_ROLE_STATE_ACTIVE)
return 0;
mutex_lock(&cdns->mutex);
ret = cdns->roles[role]->start(cdns);
if (!ret)
- cdns->roles[role]->state = CDNS3_ROLE_STATE_ACTIVE;
+ cdns->roles[role]->state = CDNS_ROLE_STATE_ACTIVE;
mutex_unlock(&cdns->mutex);
return ret;
}
-static void cdns3_role_stop(struct cdns3 *cdns)
+static void cdns_role_stop(struct cdns *cdns)
{
enum usb_role role = cdns->role;
if (WARN_ON(role > USB_ROLE_DEVICE))
return;
- if (cdns->roles[role]->state == CDNS3_ROLE_STATE_INACTIVE)
+ if (cdns->roles[role]->state == CDNS_ROLE_STATE_INACTIVE)
return;
mutex_lock(&cdns->mutex);
cdns->roles[role]->stop(cdns);
- cdns->roles[role]->state = CDNS3_ROLE_STATE_INACTIVE;
+ cdns->roles[role]->state = CDNS_ROLE_STATE_INACTIVE;
mutex_unlock(&cdns->mutex);
}
-static void cdns3_exit_roles(struct cdns3 *cdns)
+static void cdns_exit_roles(struct cdns *cdns)
{
- cdns3_role_stop(cdns);
- cdns3_drd_exit(cdns);
+ cdns_role_stop(cdns);
+ cdns_drd_exit(cdns);
}
/**
- * cdns3_core_init_role - initialize role of operation
- * @cdns: Pointer to cdns3 structure
+ * cdns_core_init_role - initialize role of operation
+ * @cdns: Pointer to cdns structure
*
* Returns 0 on success otherwise negative errno
*/
-static int cdns3_core_init_role(struct cdns3 *cdns)
+static int cdns_core_init_role(struct cdns *cdns)
{
struct device *dev = cdns->dev;
enum usb_dr_mode best_dr_mode;
* can be restricted later depending on strap pin configuration.
*/
if (dr_mode == USB_DR_MODE_UNKNOWN) {
- if (IS_ENABLED(CONFIG_USB_CDNS3_HOST) &&
- IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
- dr_mode = USB_DR_MODE_OTG;
- else if (IS_ENABLED(CONFIG_USB_CDNS3_HOST))
- dr_mode = USB_DR_MODE_HOST;
- else if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
- dr_mode = USB_DR_MODE_PERIPHERAL;
+ if (cdns->version == CDNSP_CONTROLLER_V2) {
+ if (IS_ENABLED(CONFIG_USB_CDNSP_HOST) &&
+ IS_ENABLED(CONFIG_USB_CDNSP_GADGET))
+ dr_mode = USB_DR_MODE_OTG;
+ else if (IS_ENABLED(CONFIG_USB_CDNSP_HOST))
+ dr_mode = USB_DR_MODE_HOST;
+ else if (IS_ENABLED(CONFIG_USB_CDNSP_GADGET))
+ dr_mode = USB_DR_MODE_PERIPHERAL;
+ } else {
+ if (IS_ENABLED(CONFIG_USB_CDNS3_HOST) &&
+ IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
+ dr_mode = USB_DR_MODE_OTG;
+ else if (IS_ENABLED(CONFIG_USB_CDNS3_HOST))
+ dr_mode = USB_DR_MODE_HOST;
+ else if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
+ dr_mode = USB_DR_MODE_PERIPHERAL;
+ }
}
/*
*/
best_dr_mode = cdns->dr_mode;
- ret = cdns3_idle_init(cdns);
+ ret = cdns_idle_init(cdns);
if (ret)
return ret;
dr_mode = best_dr_mode;
if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_HOST) {
- ret = cdns3_host_init(cdns);
+ if ((cdns->version == CDNSP_CONTROLLER_V2 &&
+ IS_ENABLED(CONFIG_USB_CDNSP_HOST)) ||
+ (cdns->version < CDNSP_CONTROLLER_V2 &&
+ IS_ENABLED(CONFIG_USB_CDNS3_HOST)))
+ ret = cdns_host_init(cdns);
+ else
+ ret = -ENXIO;
+
if (ret) {
dev_err(dev, "Host initialization failed with %d\n",
ret);
}
if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) {
- ret = cdns3_gadget_init(cdns);
+ if (cdns->gadget_init)
+ ret = cdns->gadget_init(cdns);
+ else
+ ret = -ENXIO;
+
if (ret) {
dev_err(dev, "Device initialization failed with %d\n",
ret);
cdns->dr_mode = dr_mode;
- ret = cdns3_drd_update_mode(cdns);
+ ret = cdns_drd_update_mode(cdns);
if (ret)
goto err;
/* Initialize idle role to start with */
- ret = cdns3_role_start(cdns, USB_ROLE_NONE);
+ ret = cdns_role_start(cdns, USB_ROLE_NONE);
if (ret)
goto err;
switch (cdns->dr_mode) {
case USB_DR_MODE_OTG:
- ret = cdns3_hw_role_switch(cdns);
+ ret = cdns_hw_role_switch(cdns);
if (ret)
goto err;
break;
case USB_DR_MODE_PERIPHERAL:
- ret = cdns3_role_start(cdns, USB_ROLE_DEVICE);
+ ret = cdns_role_start(cdns, USB_ROLE_DEVICE);
if (ret)
goto err;
break;
case USB_DR_MODE_HOST:
- ret = cdns3_role_start(cdns, USB_ROLE_HOST);
+ ret = cdns_role_start(cdns, USB_ROLE_HOST);
if (ret)
goto err;
break;
return 0;
err:
- cdns3_exit_roles(cdns);
+ cdns_exit_roles(cdns);
return ret;
}
/**
- * cdns3_hw_role_state_machine - role switch state machine based on hw events.
+ * cdns_hw_role_state_machine - role switch state machine based on hw events.
* @cdns: Pointer to controller structure.
*
* Returns next role to be entered based on hw events.
*/
-static enum usb_role cdns3_hw_role_state_machine(struct cdns3 *cdns)
+static enum usb_role cdns_hw_role_state_machine(struct cdns *cdns)
{
enum usb_role role = USB_ROLE_NONE;
int id, vbus;
if (cdns->dr_mode != USB_DR_MODE_OTG) {
- if (cdns3_is_host(cdns))
+ if (cdns_is_host(cdns))
role = USB_ROLE_HOST;
- if (cdns3_is_device(cdns))
+ if (cdns_is_device(cdns))
role = USB_ROLE_DEVICE;
return role;
}
- id = cdns3_get_id(cdns);
- vbus = cdns3_get_vbus(cdns);
+ id = cdns_get_id(cdns);
+ vbus = cdns_get_vbus(cdns);
/*
* Role change state machine
return role;
}
-static int cdns3_idle_role_start(struct cdns3 *cdns)
+static int cdns_idle_role_start(struct cdns *cdns)
{
return 0;
}
-static void cdns3_idle_role_stop(struct cdns3 *cdns)
+static void cdns_idle_role_stop(struct cdns *cdns)
{
/* Program Lane swap and bring PHY out of RESET */
phy_reset(cdns->usb3_phy);
}
-static int cdns3_idle_init(struct cdns3 *cdns)
+static int cdns_idle_init(struct cdns *cdns)
{
- struct cdns3_role_driver *rdrv;
+ struct cdns_role_driver *rdrv;
rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
if (!rdrv)
return -ENOMEM;
- rdrv->start = cdns3_idle_role_start;
- rdrv->stop = cdns3_idle_role_stop;
- rdrv->state = CDNS3_ROLE_STATE_INACTIVE;
+ rdrv->start = cdns_idle_role_start;
+ rdrv->stop = cdns_idle_role_stop;
+ rdrv->state = CDNS_ROLE_STATE_INACTIVE;
rdrv->suspend = NULL;
rdrv->resume = NULL;
rdrv->name = "idle";
}
/**
- * cdns3_hw_role_switch - switch roles based on HW state
+ * cdns_hw_role_switch - switch roles based on HW state
* @cdns: controller
*/
-int cdns3_hw_role_switch(struct cdns3 *cdns)
+int cdns_hw_role_switch(struct cdns *cdns)
{
enum usb_role real_role, current_role;
int ret = 0;
pm_runtime_get_sync(cdns->dev);
current_role = cdns->role;
- real_role = cdns3_hw_role_state_machine(cdns);
+ real_role = cdns_hw_role_state_machine(cdns);
/* Do nothing if nothing changed */
if (current_role == real_role)
goto exit;
- cdns3_role_stop(cdns);
+ cdns_role_stop(cdns);
dev_dbg(cdns->dev, "Switching role %d -> %d", current_role, real_role);
- ret = cdns3_role_start(cdns, real_role);
+ ret = cdns_role_start(cdns, real_role);
if (ret) {
/* Back to current role */
dev_err(cdns->dev, "set %d has failed, back to %d\n",
real_role, current_role);
- ret = cdns3_role_start(cdns, current_role);
+ ret = cdns_role_start(cdns, current_role);
if (ret)
dev_err(cdns->dev, "back to %d failed too\n",
current_role);
*
* Returns role
*/
-static enum usb_role cdns3_role_get(struct usb_role_switch *sw)
+static enum usb_role cdns_role_get(struct usb_role_switch *sw)
{
- struct cdns3 *cdns = usb_role_switch_get_drvdata(sw);
+ struct cdns *cdns = usb_role_switch_get_drvdata(sw);
return cdns->role;
}
/**
- * cdns3_role_set - set current role of controller.
+ * cdns_role_set - set current role of controller.
*
* @sw: pointer to USB role switch structure
* @role: the previous role
* - Role switch for dual-role devices
* - USB_ROLE_GADGET <--> USB_ROLE_NONE for peripheral-only devices
*/
-static int cdns3_role_set(struct usb_role_switch *sw, enum usb_role role)
+static int cdns_role_set(struct usb_role_switch *sw, enum usb_role role)
{
- struct cdns3 *cdns = usb_role_switch_get_drvdata(sw);
+ struct cdns *cdns = usb_role_switch_get_drvdata(sw);
int ret = 0;
pm_runtime_get_sync(cdns->dev);
}
}
- cdns3_role_stop(cdns);
- ret = cdns3_role_start(cdns, role);
+ cdns_role_stop(cdns);
+ ret = cdns_role_start(cdns, role);
if (ret)
dev_err(cdns->dev, "set role %d has failed\n", role);
return ret;
}
-static int set_phy_power_on(struct cdns3 *cdns)
-{
- int ret;
-
- ret = phy_power_on(cdns->usb2_phy);
- if (ret)
- return ret;
-
- ret = phy_power_on(cdns->usb3_phy);
- if (ret)
- phy_power_off(cdns->usb2_phy);
-
- return ret;
-}
-
-static void set_phy_power_off(struct cdns3 *cdns)
-{
- phy_power_off(cdns->usb3_phy);
- phy_power_off(cdns->usb2_phy);
-}
/**
- * cdns3_wakeup_irq - interrupt handler for wakeup events
- * @irq: irq number for cdns3 core device
- * @data: structure of cdns3
+ * cdns_wakeup_irq - interrupt handler for wakeup events
+ * @irq: irq number for cdns3/cdnsp core device
+ * @data: structure of cdns
*
* Returns IRQ_HANDLED or IRQ_NONE
*/
-static irqreturn_t cdns3_wakeup_irq(int irq, void *data)
+static irqreturn_t cdns_wakeup_irq(int irq, void *data)
{
- struct cdns3 *cdns = data;
+ struct cdns *cdns = data;
if (cdns->in_lpm) {
disable_irq_nosync(irq);
}
/**
- * cdns3_probe - probe for cdns3 core device
- * @pdev: Pointer to cdns3 core platform device
+ * cdns_probe - probe for cdns3/cdnsp core device
+ * @cdns: Pointer to cdns structure.
*
* Returns 0 on success otherwise negative errno
*/
-static int cdns3_probe(struct platform_device *pdev)
+int cdns_init(struct cdns *cdns)
{
- struct device *dev = &pdev->dev;
- struct resource *res;
- struct cdns3 *cdns;
- void __iomem *regs;
+ struct device *dev = cdns->dev;
int ret;
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
return ret;
}
- cdns = devm_kzalloc(dev, sizeof(*cdns), GFP_KERNEL);
- if (!cdns)
- return -ENOMEM;
-
- cdns->dev = dev;
- cdns->pdata = dev_get_platdata(dev);
-
- platform_set_drvdata(pdev, cdns);
-
- res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "host");
- if (!res) {
- dev_err(dev, "missing host IRQ\n");
- return -ENODEV;
- }
-
- cdns->xhci_res[0] = *res;
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "xhci");
- if (!res) {
- dev_err(dev, "couldn't get xhci resource\n");
- return -ENXIO;
- }
-
- cdns->xhci_res[1] = *res;
-
- cdns->dev_irq = platform_get_irq_byname(pdev, "peripheral");
- if (cdns->dev_irq < 0)
- return cdns->dev_irq;
-
- regs = devm_platform_ioremap_resource_byname(pdev, "dev");
- if (IS_ERR(regs))
- return PTR_ERR(regs);
- cdns->dev_regs = regs;
-
- cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
- if (cdns->otg_irq < 0)
- return cdns->otg_irq;
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
- if (!res) {
- dev_err(dev, "couldn't get otg resource\n");
- return -ENXIO;
- }
-
- cdns->phyrst_a_enable = device_property_read_bool(dev, "cdns,phyrst-a-enable");
-
- cdns->otg_res = *res;
-
- cdns->wakeup_irq = platform_get_irq_byname_optional(pdev, "wakeup");
- if (cdns->wakeup_irq == -EPROBE_DEFER)
- return cdns->wakeup_irq;
- else if (cdns->wakeup_irq == 0)
- return -EINVAL;
-
- if (cdns->wakeup_irq < 0) {
- dev_dbg(dev, "couldn't get wakeup irq\n");
- cdns->wakeup_irq = 0x0;
- }
-
mutex_init(&cdns->mutex);
- cdns->usb2_phy = devm_phy_optional_get(dev, "cdns3,usb2-phy");
- if (IS_ERR(cdns->usb2_phy))
- return PTR_ERR(cdns->usb2_phy);
-
- ret = phy_init(cdns->usb2_phy);
- if (ret)
- return ret;
-
- cdns->usb3_phy = devm_phy_optional_get(dev, "cdns3,usb3-phy");
- if (IS_ERR(cdns->usb3_phy))
- return PTR_ERR(cdns->usb3_phy);
-
- ret = phy_init(cdns->usb3_phy);
- if (ret)
- goto err1;
-
- ret = set_phy_power_on(cdns);
- if (ret)
- goto err2;
-
if (device_property_read_bool(dev, "usb-role-switch")) {
struct usb_role_switch_desc sw_desc = { };
- sw_desc.set = cdns3_role_set;
- sw_desc.get = cdns3_role_get;
+ sw_desc.set = cdns_role_set;
+ sw_desc.get = cdns_role_get;
sw_desc.allow_userspace_control = true;
sw_desc.driver_data = cdns;
sw_desc.fwnode = dev->fwnode;
cdns->role_sw = usb_role_switch_register(dev, &sw_desc);
if (IS_ERR(cdns->role_sw)) {
- ret = PTR_ERR(cdns->role_sw);
dev_warn(dev, "Unable to register Role Switch\n");
- goto err3;
+ return PTR_ERR(cdns->role_sw);
}
}
if (cdns->wakeup_irq) {
ret = devm_request_irq(cdns->dev, cdns->wakeup_irq,
- cdns3_wakeup_irq,
+ cdns_wakeup_irq,
IRQF_SHARED,
dev_name(cdns->dev), cdns);
if (ret) {
dev_err(cdns->dev, "couldn't register wakeup irq handler\n");
- goto err4;
+ goto role_switch_unregister;
}
}
- ret = cdns3_drd_init(cdns);
+ ret = cdns_drd_init(cdns);
if (ret)
- goto err4;
+ goto init_failed;
- ret = cdns3_core_init_role(cdns);
+ ret = cdns_core_init_role(cdns);
if (ret)
- goto err4;
+ goto init_failed;
spin_lock_init(&cdns->lock);
- device_set_wakeup_capable(dev, true);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
- if (!(cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW)))
- pm_runtime_forbid(dev);
- /*
- * The controller needs less time between bus and controller suspend,
- * and we also needs a small delay to avoid frequently entering low
- * power mode.
- */
- pm_runtime_set_autosuspend_delay(dev, 20);
- pm_runtime_mark_last_busy(dev);
- pm_runtime_use_autosuspend(dev);
dev_dbg(dev, "Cadence USB3 core: probe succeed\n");
return 0;
-err4:
- cdns3_drd_exit(cdns);
+init_failed:
+ cdns_drd_exit(cdns);
+role_switch_unregister:
if (cdns->role_sw)
usb_role_switch_unregister(cdns->role_sw);
-err3:
- set_phy_power_off(cdns);
-err2:
- phy_exit(cdns->usb3_phy);
-err1:
- phy_exit(cdns->usb2_phy);
return ret;
}
+EXPORT_SYMBOL_GPL(cdns_init);
/**
- * cdns3_remove - unbind drd driver and clean up
- * @pdev: Pointer to Linux platform device
+ * cdns_remove - unbind drd driver and clean up
+ * @cdns: Pointer to cdns structure.
*
* Returns 0 on success otherwise negative errno
*/
-static int cdns3_remove(struct platform_device *pdev)
+int cdns_remove(struct cdns *cdns)
{
- struct cdns3 *cdns = platform_get_drvdata(pdev);
-
- pm_runtime_get_sync(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
- pm_runtime_put_noidle(&pdev->dev);
- cdns3_exit_roles(cdns);
+ cdns_exit_roles(cdns);
usb_role_switch_unregister(cdns->role_sw);
- set_phy_power_off(cdns);
- phy_exit(cdns->usb2_phy);
- phy_exit(cdns->usb3_phy);
- return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int cdns3_set_platform_suspend(struct device *dev,
- bool suspend, bool wakeup)
-{
- struct cdns3 *cdns = dev_get_drvdata(dev);
- int ret = 0;
-
- if (cdns->pdata && cdns->pdata->platform_suspend)
- ret = cdns->pdata->platform_suspend(dev, suspend, wakeup);
-
- return ret;
-}
-
-static int cdns3_controller_suspend(struct device *dev, pm_message_t msg)
-{
- struct cdns3 *cdns = dev_get_drvdata(dev);
- bool wakeup;
- unsigned long flags;
-
- if (cdns->in_lpm)
- return 0;
-
- if (PMSG_IS_AUTO(msg))
- wakeup = true;
- else
- wakeup = device_may_wakeup(dev);
-
- cdns3_set_platform_suspend(cdns->dev, true, wakeup);
- set_phy_power_off(cdns);
- spin_lock_irqsave(&cdns->lock, flags);
- cdns->in_lpm = true;
- spin_unlock_irqrestore(&cdns->lock, flags);
- dev_dbg(cdns->dev, "%s ends\n", __func__);
return 0;
}
+EXPORT_SYMBOL_GPL(cdns_remove);
-static int cdns3_controller_resume(struct device *dev, pm_message_t msg)
-{
- struct cdns3 *cdns = dev_get_drvdata(dev);
- int ret;
- unsigned long flags;
-
- if (!cdns->in_lpm)
- return 0;
-
- ret = set_phy_power_on(cdns);
- if (ret)
- return ret;
-
- cdns3_set_platform_suspend(cdns->dev, false, false);
-
- spin_lock_irqsave(&cdns->lock, flags);
- if (cdns->roles[cdns->role]->resume && !PMSG_IS_AUTO(msg))
- cdns->roles[cdns->role]->resume(cdns, false);
-
- cdns->in_lpm = false;
- spin_unlock_irqrestore(&cdns->lock, flags);
- if (cdns->wakeup_pending) {
- cdns->wakeup_pending = false;
- enable_irq(cdns->wakeup_irq);
- }
- dev_dbg(cdns->dev, "%s ends\n", __func__);
-
- return ret;
-}
-
-static int cdns3_runtime_suspend(struct device *dev)
-{
- return cdns3_controller_suspend(dev, PMSG_AUTO_SUSPEND);
-}
-
-static int cdns3_runtime_resume(struct device *dev)
-{
- return cdns3_controller_resume(dev, PMSG_AUTO_RESUME);
-}
#ifdef CONFIG_PM_SLEEP
-
-static int cdns3_suspend(struct device *dev)
+int cdns_suspend(struct cdns *cdns)
{
- struct cdns3 *cdns = dev_get_drvdata(dev);
+ struct device *dev = cdns->dev;
unsigned long flags;
if (pm_runtime_status_suspended(dev))
spin_unlock_irqrestore(&cdns->lock, flags);
}
- return cdns3_controller_suspend(dev, PMSG_SUSPEND);
+ return 0;
}
+EXPORT_SYMBOL_GPL(cdns_suspend);
-static int cdns3_resume(struct device *dev)
+int cdns_resume(struct cdns *cdns, u8 set_active)
{
- int ret;
+ struct device *dev = cdns->dev;
- ret = cdns3_controller_resume(dev, PMSG_RESUME);
- if (ret)
- return ret;
+ if (cdns->roles[cdns->role]->resume)
+ cdns->roles[cdns->role]->resume(cdns, false);
- pm_runtime_disable(dev);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
+ if (set_active) {
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ }
- return ret;
+ return 0;
}
+EXPORT_SYMBOL_GPL(cdns_resume);
#endif /* CONFIG_PM_SLEEP */
-#endif /* CONFIG_PM */
-
-static const struct dev_pm_ops cdns3_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(cdns3_suspend, cdns3_resume)
- SET_RUNTIME_PM_OPS(cdns3_runtime_suspend, cdns3_runtime_resume, NULL)
-};
-
-#ifdef CONFIG_OF
-static const struct of_device_id of_cdns3_match[] = {
- { .compatible = "cdns,usb3" },
- { },
-};
-MODULE_DEVICE_TABLE(of, of_cdns3_match);
-#endif
-
-static struct platform_driver cdns3_driver = {
- .probe = cdns3_probe,
- .remove = cdns3_remove,
- .driver = {
- .name = "cdns-usb3",
- .of_match_table = of_match_ptr(of_cdns3_match),
- .pm = &cdns3_pm_ops,
- },
-};
-
-module_platform_driver(cdns3_driver);
-
-MODULE_ALIAS("platform:cdns3");
+
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("Cadence USB3 DRD Controller Driver");
+MODULE_DESCRIPTION("Cadence USBSS and USBSSP DRD Driver");
+MODULE_LICENSE("GPL");
projects / linux.git / blobdiff