extcon: int3496: Ignore incorrect IoRestriction for ID pin

The commit

  70216fd937fe ("extcon: int3496: Set the id pin to direction-input if necessary")

introduced a workaround for incorrect IoRestriction mode in ACPI table.

Now, when GPIO ACPI library does it in generic way, see the commit

  1b2ca32ab0b8 ("gpiolib: acpi: Introduce NO_RESTRICTION quirk")

for the details, just set an appropriate quirk flag instead.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
index 191e99f..acaccb1 100644 (file)
--- a/drivers/extcon/extcon-intel-int3496.c
+++ b/drivers/extcon/extcon-intel-int3496.c
@@ -50,7 +50,11 @@ static const struct acpi_gpio_params vbus_gpios = { INT3496_GPIO_VBUS_EN, 0, fal
 static const struct acpi_gpio_params mux_gpios = { INT3496_GPIO_USB_MUX, 0, false };
 
 static const struct acpi_gpio_mapping acpi_int3496_default_gpios[] = {
-       { "id-gpios", &id_gpios, 1 },
+       /*
+        * Some platforms have a bug in ACPI GPIO description making IRQ
+        * GPIO to be output only. Ask the GPIO core to ignore this limit.
+        */
+       { "id-gpios", &id_gpios, 1, ACPI_GPIO_QUIRK_NO_IO_RESTRICTION },
        { "vbus-gpios", &vbus_gpios, 1 },
        { "mux-gpios", &mux_gpios, 1 },
        { },
@@ -112,9 +116,6 @@ static int int3496_probe(struct platform_device *pdev)
                ret = PTR_ERR(data->gpio_usb_id);
                dev_err(dev, "can't request USB ID GPIO: %d\n", ret);
                return ret;
-       } else if (gpiod_get_direction(data->gpio_usb_id) != GPIOF_DIR_IN) {
-               dev_warn(dev, FW_BUG "USB ID GPIO not in input mode, fixing\n");
-               gpiod_direction_input(data->gpio_usb_id);
        }
 
        data->usb_id_irq = gpiod_to_irq(data->gpio_usb_id);