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gpio: acpi: Split out acpi_gpio_get_irq_resource() helper
The helper does retrieve pointer to struct acpi_resource_gpio from struct acpi_resource if it represents GpioInt() resource. It will be used by PNP code later on. 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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@ -165,6 +165,23 @@ static void acpi_gpio_chip_dh(acpi_handle handle, void *data)
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/* The address of this function is used as a key. */
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/* The address of this function is used as a key. */
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}
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}
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bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
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struct acpi_resource_gpio **agpio)
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{
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struct acpi_resource_gpio *gpio;
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if (ares->type != ACPI_RESOURCE_TYPE_GPIO)
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return false;
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gpio = &ares->data.gpio;
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if (gpio->connection_type != ACPI_RESOURCE_GPIO_TYPE_INT)
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return false;
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*agpio = gpio;
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return true;
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}
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EXPORT_SYMBOL_GPL(acpi_gpio_get_irq_resource);
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static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
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static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
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void *context)
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void *context)
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{
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{
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@ -178,11 +195,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
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unsigned long irqflags;
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unsigned long irqflags;
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int ret, pin, irq;
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int ret, pin, irq;
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if (ares->type != ACPI_RESOURCE_TYPE_GPIO)
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if (!acpi_gpio_get_irq_resource(ares, &agpio))
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return AE_OK;
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agpio = &ares->data.gpio;
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if (agpio->connection_type != ACPI_RESOURCE_GPIO_TYPE_INT)
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return AE_OK;
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return AE_OK;
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handle = ACPI_HANDLE(chip->parent);
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handle = ACPI_HANDLE(chip->parent);
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@ -964,6 +964,8 @@ int devm_acpi_dev_add_driver_gpios(struct device *dev,
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const struct acpi_gpio_mapping *gpios);
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const struct acpi_gpio_mapping *gpios);
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void devm_acpi_dev_remove_driver_gpios(struct device *dev);
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void devm_acpi_dev_remove_driver_gpios(struct device *dev);
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bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
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struct acpi_resource_gpio **agpio);
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int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index);
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int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index);
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#else
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#else
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static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
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static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
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@ -980,6 +982,11 @@ static inline int devm_acpi_dev_add_driver_gpios(struct device *dev,
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}
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}
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static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {}
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static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {}
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static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
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struct acpi_resource_gpio **agpio)
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{
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return false;
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}
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static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
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static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
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{
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{
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return -ENXIO;
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return -ENXIO;
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