[PATCH] LED: add LED trigger tupport
[linux-2.6.git] / drivers / leds / leds.h
1 /*
2  * LED Core
3  *
4  * Copyright 2005 Openedhand Ltd.
5  *
6  * Author: Richard Purdie <rpurdie@openedhand.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12  */
13 #ifndef __LEDS_H_INCLUDED
14 #define __LEDS_H_INCLUDED
15
16 #include <linux/leds.h>
17
18 static inline void led_set_brightness(struct led_classdev *led_cdev,
19                                         enum led_brightness value)
20 {
21         if (value > LED_FULL)
22                 value = LED_FULL;
23         led_cdev->brightness = value;
24         if (!(led_cdev->flags & LED_SUSPENDED))
25                 led_cdev->brightness_set(led_cdev, value);
26 }
27
28 extern rwlock_t leds_list_lock;
29 extern struct list_head leds_list;
30
31 #ifdef CONFIG_LEDS_TRIGGERS
32 void led_trigger_set_default(struct led_classdev *led_cdev);
33 void led_trigger_set(struct led_classdev *led_cdev,
34                         struct led_trigger *trigger);
35 #else
36 #define led_trigger_set_default(x) do {} while(0)
37 #define led_trigger_set(x, y) do {} while(0)
38 #endif
39
40 ssize_t led_trigger_store(struct class_device *dev, const char *buf,
41                         size_t count);
42 ssize_t led_trigger_show(struct class_device *dev, char *buf);
43
44 #endif  /* __LEDS_H_INCLUDED */