@@ -111,7 +111,7 @@ static int acpi_gpiochip_find(struct gpio_chip *gc, void *data)
* controller does not have GPIO chip registered at the moment. This is to
* support probe deferral.
*/
-static struct gpio_desc *acpi_get_gpiod(char *path, int pin)
+struct gpio_desc *acpi_get_gpiod(char *path, int pin)
{
struct gpio_chip *chip;
acpi_handle handle;
@@ -127,6 +127,7 @@ static struct gpio_desc *acpi_get_gpiod(char *path, int pin)
return gpiochip_get_desc(chip, pin);
}
+EXPORT_SYMBOL_GPL(acpi_get_gpiod);
static irqreturn_t acpi_gpio_irq_handler(int irq, void *data)
{
@@ -1066,6 +1066,7 @@ void __acpi_handle_debug(struct _ddebug *descriptor, acpi_handle handle, const c
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);
+struct gpio_desc *acpi_get_gpiod(char *path, int pin);
#else
static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
struct acpi_resource_gpio **agpio)
@@ -1076,6 +1077,10 @@ static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
{
return -ENXIO;
}
+struct gpio_desc *acpi_get_gpiod(char *path, int pin)
+{
+ return NULL;
+}
#endif
/* Device properties */
I need to be able to translate GPIO resources in an acpi_device's _CRS into gpio_descs. Those are represented in _CRS as a pathname to a GPIO device plus the pin's index number: this function is perfect for that purpose. Signed-off-by: Daniel Scally <djrscally@gmail.com> --- Changes since RFC v3: - Patch introduced drivers/gpio/gpiolib-acpi.c | 3 ++- include/linux/acpi.h | 5 +++++ 2 files changed, 7 insertions(+), 1 deletion(-)