gpiolib: acpi: Respect pin bias setting
For now, we don't take into account the pin bias settings supplied by ACPI.
This change is targeting the mentioned gap.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 9c6ebaa..c9fc9e2 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -528,6 +528,17 @@ acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *inf
int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
struct acpi_gpio_info *info)
{
+ switch (info->pin_config) {
+ case ACPI_PIN_CONFIG_PULLUP:
+ *lookupflags |= GPIO_PULL_UP;
+ break;
+ case ACPI_PIN_CONFIG_PULLDOWN:
+ *lookupflags |= GPIO_PULL_DOWN;
+ break;
+ default:
+ break;
+ }
+
if (info->polarity == GPIO_ACTIVE_LOW)
*lookupflags |= GPIO_ACTIVE_LOW;
@@ -567,6 +578,7 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data)
lookup->desc = acpi_get_gpiod(agpio->resource_source.string_ptr,
agpio->pin_table[pin_index]);
+ lookup->info.pin_config = agpio->pin_config;
lookup->info.gpioint = gpioint;
/*