renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-21 11:44:01 +08:00
Code

usb: dwc3: pci: add dr-mode for Intel dwc3

Browse Source 
It's know that Intel's SoCs' dwc3 integration is
peripheral-only since Intel implements its own
portmux for role-swapping. In order to prevent dwc3
from ever registering and XHCI platform_device,
let's just set dr-mode to peripheral-only on Intel
SoCs.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-06-07 12:49:52 +03:00
parent 21e64bf20d
commit e6fe66fe08
1 changed files with 32 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
drivers/usb/dwc3/dwc3-pci.c
View File

@ -76,33 +76,45 @@ static int dwc3_pci_quirks(struct pci_dev *pdev, struct platform_device *dwc3)
return platform_device_add_properties(dwc3, properties);
}
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
struct gpio_desc *gpio;
if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
int ret;
acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
acpi_dwc3_byt_gpios);
struct property_entry properties[] = {
PROPERTY_ENTRY_STRING("dr-mode", "peripheral"),
{ }
};
/*
* These GPIOs will turn on the USB2 PHY. Note that we have to
* put the gpio descriptors again here because the phy driver
* might want to grab them, too.
*/
gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
if (IS_ERR(gpio))
return PTR_ERR(gpio);
ret = platform_device_add_properties(dwc3, properties);
if (ret < 0)
return ret;
gpiod_set_value_cansleep(gpio, 1);
gpiod_put(gpio);
if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
struct gpio_desc *gpio;
gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(gpio))
return PTR_ERR(gpio);
acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
acpi_dwc3_byt_gpios);
/*
* These GPIOs will turn on the USB2 PHY. Note that we have to
* put the gpio descriptors again here because the phy driver
* might want to grab them, too.
*/
gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
if (IS_ERR(gpio))
return PTR_ERR(gpio);
if (gpio) {
gpiod_set_value_cansleep(gpio, 1);
gpiod_put(gpio);
usleep_range(10000, 11000);
gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(gpio))
return PTR_ERR(gpio);
if (gpio) {
gpiod_set_value_cansleep(gpio, 1);
gpiod_put(gpio);
usleep_range(10000, 11000);
}
}
}