Commit d1f77282 authored by Bartosz Golaszewski's avatar Bartosz Golaszewski
Browse files

gpiolib: provide gpio_device_get_label() 



Provide a getter for the GPIO device label string so that users don't
have to dereference struct gpio_chip directly.

Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent b85ea95d

drivers/gpio/gpiolib.c

+14 −0
Original line number Diff line number Diff line
@@ -254,6 +254,20 @@ int gpio_device_get_base(struct gpio_device *gdev) 
}

EXPORT_SYMBOL_GPL(gpio_device_get_base);



/**

 * gpio_device_get_label() - Get the label of this GPIO device

 * @gdev: GPIO device

 *

 * Returns:

 * Pointer to the string containing the GPIO device label. The string's

 * lifetime is tied to that of the underlying GPIO device.

 */

const char *gpio_device_get_label(struct gpio_device *gdev)

{

	return gdev->label;

}

EXPORT_SYMBOL(gpio_device_get_label);



/**

 * gpio_device_get_chip() - Get the gpio_chip implementation of this GPIO device

 * @gdev: GPIO device

include/linux/gpio/driver.h

+1 −0
Original line number Diff line number Diff line
@@ -786,6 +786,7 @@ struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc); 


/* struct gpio_device getters */

int gpio_device_get_base(struct gpio_device *gdev);

const char *gpio_device_get_label(struct gpio_device *gdev);



#else /* CONFIG_GPIOLIB */