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gpiolib: acpi: Introduce NO_RESTRICTION quirk

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Allow to relax IoRestriction for certain cases.

One of the use case is incorrectly cooked ACPI table where interrupt pin is
defined with GpioIo() macro with IoRestrictionOutputOnly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2017-11-10 15:40:33 +02:00 • committed by Linus Walleij
parent ce0929d222
commit 1b2ca32ab0
2 changed files with 14 additions and 3 deletions
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4
include/linux/acpi.h
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@ -978,6 +978,10 @@ struct acpi_gpio_mapping {
const char *name;
const struct acpi_gpio_params *data;
unsigned int size;
/* Ignore IoRestriction field */
#define ACPI_GPIO_QUIRK_NO_IO_RESTRICTION BIT(0)
unsigned int quirks;
};