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@xxxxxxxxxxxxxxx>
---
drivers/gpio/gpiolib-acpi.c | 23 ++++++++++++++++++-----
include/linux/acpi.h | 7 +++++++
2 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index e431222edc2b..6bea176b066c 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -165,6 +165,23 @@ static void acpi_gpio_chip_dh(acpi_handle handle, void *data)
/* The address of this function is used as a key. */
}
+bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
+ struct acpi_resource_gpio **agpio)
+{
+ struct acpi_resource_gpio *gpio;
+
+ if (ares->type != ACPI_RESOURCE_TYPE_GPIO)
+ return false;
+
+ gpio = &ares->data.gpio;
+ if (gpio->connection_type != ACPI_RESOURCE_GPIO_TYPE_INT)
+ return false;
+
+ *agpio = gpio;
+ return true;
+}
+EXPORT_SYMBOL_GPL(acpi_gpio_get_irq_resource);
+
static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
void *context)
{
@@ -178,11 +195,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
unsigned long irqflags;
int ret, pin, irq;
- if (ares->type != ACPI_RESOURCE_TYPE_GPIO)
- return AE_OK;
-
- agpio = &ares->data.gpio;
- if (agpio->connection_type != ACPI_RESOURCE_GPIO_TYPE_INT)
+ if (!acpi_gpio_get_irq_resource(ares, &agpio))
return AE_OK;
handle = ACPI_HANDLE(chip->parent);
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 137e4a3d89c5..d5aa3c42f64d 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -964,6 +964,8 @@ int devm_acpi_dev_add_driver_gpios(struct device *dev,
const struct acpi_gpio_mapping *gpios);
void devm_acpi_dev_remove_driver_gpios(struct device *dev);
+bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
+ struct acpi_resource_gpio **agpio);
int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index);
#else
static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
@@ -980,6 +982,11 @@ static inline int devm_acpi_dev_add_driver_gpios(struct device *dev,
}
static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {}
+static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
+ struct acpi_resource_gpio **agpio)
+{
+ return false;
+}
static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
{
return -ENXIO;
--
2.11.0
--
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