diff options
Diffstat (limited to 'include/linux/leds.h')
| -rw-r--r-- | include/linux/leds.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/include/linux/leds.h b/include/linux/leds.h index b35e0f5b8d6c..088f1da02bed 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -47,9 +47,7 @@ struct led_classdev { #define LED_BLINK_BRIGHTNESS_CHANGE (1 << 20) #define LED_BLINK_DISABLE (1 << 21) #define LED_SYSFS_DISABLE (1 << 22) -#define SET_BRIGHTNESS_ASYNC (1 << 23) -#define SET_BRIGHTNESS_SYNC (1 << 24) -#define LED_DEV_CAP_FLASH (1 << 25) +#define LED_DEV_CAP_FLASH (1 << 23) /* Set LED brightness level */ /* Must not sleep, use a workqueue if needed */ @@ -162,6 +160,21 @@ extern void led_blink_set_oneshot(struct led_classdev *led_cdev, */ extern void led_set_brightness(struct led_classdev *led_cdev, enum led_brightness brightness); + +/** + * led_set_brightness_sync - set LED brightness synchronously + * @led_cdev: the LED to set + * @brightness: the brightness to set it to + * + * Set an LED's brightness immediately. This function will block + * the caller for the time required for accessing device registers, + * and it can sleep. + * + * Returns: 0 on success or negative error value on failure + */ +extern int led_set_brightness_sync(struct led_classdev *led_cdev, + enum led_brightness value); + /** * led_update_brightness - update LED brightness * @led_cdev: the LED to query |