Re: [PATCH v1] extcon: int3496: Ignore incorrect IoRestriction for ID pin

From: Hans de Goede
Date: Wed Feb 28 2018 - 10:01:21 EST


Hi,

On 26-02-18 20:34, Andy Shevchenko wrote:
The commit 70216fd937fe introduced a workaround for incorrect
IoRestriction mode in ACPI table.

Now, when GPIO ACPI library does it in generic way, just set
an appropriate quirk flag instead.

Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

Looks good to me and everything still works after this change,
so with the earlier review remarks fixed this is:

Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Tested-by: Hans de Goede <hdegoede@xxxxxxxxxx>

Regards,

Hans





---
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);