diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 12 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib.h | 2 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 9c6ebaaa02fe..c9fc9e232aaf 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; /* diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h index e1636e152a6c..cf79b1d78af0 100644 --- a/drivers/gpio/gpiolib.h +++ b/drivers/gpio/gpiolib.h @@ -74,6 +74,7 @@ struct gpio_device { * @adev: reference to ACPI device which consumes GPIO resource * @flags: GPIO initialization flags * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo + * @pin_config: pin bias as provided by ACPI * @polarity: interrupt polarity as provided by ACPI * @triggering: triggering type as provided by ACPI * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping @@ -82,6 +83,7 @@ struct acpi_gpio_info { struct acpi_device *adev; enum gpiod_flags flags; bool gpioint; + int pin_config; int polarity; int triggering; unsigned int quirks; |