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>
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@ -528,6 +528,17 @@ acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *inf
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int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
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struct acpi_gpio_info *info)
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{
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switch (info->pin_config) {
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case ACPI_PIN_CONFIG_PULLUP:
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*lookupflags |= GPIO_PULL_UP;
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break;
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case ACPI_PIN_CONFIG_PULLDOWN:
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*lookupflags |= GPIO_PULL_DOWN;
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break;
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default:
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break;
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}
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if (info->polarity == GPIO_ACTIVE_LOW)
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*lookupflags |= GPIO_ACTIVE_LOW;
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@ -567,6 +578,7 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data)
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lookup->desc = acpi_get_gpiod(agpio->resource_source.string_ptr,
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agpio->pin_table[pin_index]);
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lookup->info.pin_config = agpio->pin_config;
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lookup->info.gpioint = gpioint;
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/*
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@ -74,6 +74,7 @@ struct gpio_device {
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* @adev: reference to ACPI device which consumes GPIO resource
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* @flags: GPIO initialization flags
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* @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
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* @pin_config: pin bias as provided by ACPI
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* @polarity: interrupt polarity as provided by ACPI
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* @triggering: triggering type as provided by ACPI
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* @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
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@ -82,6 +83,7 @@ struct acpi_gpio_info {
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struct acpi_device *adev;
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enum gpiod_flags flags;
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bool gpioint;
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int pin_config;
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int polarity;
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int triggering;
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unsigned int quirks;
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