diff options
| -rw-r--r-- | drivers/usb/dwc3/dwc3-pci.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 80f5dc691038..5c175f839efd 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -16,6 +16,7 @@ #include <linux/pm_runtime.h> #include <linux/platform_device.h> #include <linux/gpio/consumer.h> +#include <linux/gpio/machine.h> #include <linux/acpi.h> #include <linux/delay.h> @@ -64,6 +65,15 @@ static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { { }, }; +static struct gpiod_lookup_table platform_bytcr_gpios = { + .dev_id = "0000:00:16.0", + .table = { + GPIO_LOOKUP("INT33FC:00", 54, "reset", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("INT33FC:02", 14, "cs", GPIO_ACTIVE_HIGH), + {} + }, +}; + static int dwc3_pci_quirks(struct dwc3_pci *dwc) { struct platform_device *dwc3 = dwc->dwc3; @@ -125,6 +135,13 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc) dev_dbg(&pdev->dev, "failed to add mapping table\n"); /* + * A lot of BYT devices lack ACPI resource entries for + * the GPIOs, add a fallback mapping to the reference + * design GPIOs which all boards seem to use. + */ + gpiod_add_lookup_table(&platform_bytcr_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. @@ -239,6 +256,7 @@ static void dwc3_pci_remove(struct pci_dev *pci) { struct dwc3_pci *dwc = pci_get_drvdata(pci); + gpiod_remove_lookup_table(&platform_bytcr_gpios); #ifdef CONFIG_PM cancel_work_sync(&dwc->wakeup_work); #endif |