From c3bc9956ec52fb2c70f29aa894d8eec766116584 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Fri, 31 Mar 2006 02:31:05 -0800 Subject: [PATCH] LED: add LED trigger tupport Add support for LED triggers to the LED subsystem. "Triggers" are events which change the state of an LED. Two kinds of trigger are available, simple ones which can be added to exising code with minimum disruption and complex ones for implementing new or more complex functionality. Signed-off-by: Richard Purdie Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/leds/leds.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/leds/leds.h') diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h index d26ca2f7e722..a715c4ed93ff 100644 --- a/drivers/leds/leds.h +++ b/drivers/leds/leds.h @@ -28,4 +28,17 @@ static inline void led_set_brightness(struct led_classdev *led_cdev, extern rwlock_t leds_list_lock; extern struct list_head leds_list; +#ifdef CONFIG_LEDS_TRIGGERS +void led_trigger_set_default(struct led_classdev *led_cdev); +void led_trigger_set(struct led_classdev *led_cdev, + struct led_trigger *trigger); +#else +#define led_trigger_set_default(x) do {} while(0) +#define led_trigger_set(x, y) do {} while(0) +#endif + +ssize_t led_trigger_store(struct class_device *dev, const char *buf, + size_t count); +ssize_t led_trigger_show(struct class_device *dev, char *buf); + #endif /* __LEDS_H_INCLUDED */ -- cgit v1.2.3