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gpiolib: acpi: Introduce NO_RESTRICTION quirk
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>
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@ -496,11 +496,18 @@ int
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acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info)
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{
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struct device *dev = &info->adev->dev;
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enum gpiod_flags old = *flags;
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int ret;
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ret = __acpi_gpio_update_gpiod_flags(flags, info->flags);
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if (ret)
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dev_dbg(dev, "Override GPIO initialization flags\n");
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ret = __acpi_gpio_update_gpiod_flags(&old, info->flags);
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if (info->quirks & ACPI_GPIO_QUIRK_NO_IO_RESTRICTION) {
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if (ret)
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dev_warn(dev, FW_BUG "GPIO not in correct mode, fixing\n");
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} else {
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if (ret)
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dev_dbg(dev, "Override GPIO initialization flags\n");
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*flags = old;
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}
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return ret;
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}
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@ -978,6 +978,10 @@ struct acpi_gpio_mapping {
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const char *name;
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const struct acpi_gpio_params *data;
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unsigned int size;
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/* Ignore IoRestriction field */
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#define ACPI_GPIO_QUIRK_NO_IO_RESTRICTION BIT(0)
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unsigned int quirks;
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};
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