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gpiolib: acpi: Introduce ACPI_GPIO_QUIRK_ONLY_GPIOIO

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New quirk enforces search for GPIO based on its type,
i.e. iterate over GpioIo resources only.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andy Shevchenko 2019-02-06 22:49:46 +02:00 • committed by Mark Brown
parent 3ebc584ce7
commit 4d1f7a6eab
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GPG key ID: 24D68B725D5487D0
3 changed files with 27 additions and 69 deletions
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7
include/linux/acpi.h
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@ -1014,6 +1014,13 @@ struct acpi_gpio_mapping {
/* Ignore IoRestriction field */
#define ACPI_GPIO_QUIRK_NO_IO_RESTRICTION BIT(0)
/*
* When ACPI GPIO mapping table is in use the index parameter inside it
* refers to the GPIO resource in _CRS method. That index has no
* distinction of actual type of the resource. When consumer wants to
* get GpioIo type explicitly, this quirk may be used.
*/
#define ACPI_GPIO_QUIRK_ONLY_GPIOIO BIT(1)
unsigned int quirks;
};