[PATCH v2] extcon: int3496: Ignore incorrect IoRestriction for ID pin

From: Andy Shevchenko
Date: Wed Feb 28 2018 - 11:22:18 EST


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@xxxxxxxxxx>
Tested-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
- add tags
- address comments from Chanwoo
drivers/extcon/extcon-intel-int3496.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
index 191e99f06a9a..acaccb128fc4 100644
--- 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);
--
2.16.1