Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[platform/adaptation/renesas_rcar/renesas_kernel.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/device.h>
17 #include <linux/rwsem.h>
18 #include <linux/leds.h>
19
20 static inline void __led_set_brightness(struct led_classdev *led_cdev,
21                                         enum led_brightness value)
22 {
23         if (value > led_cdev->max_brightness)
24                 value = led_cdev->max_brightness;
25         led_cdev->brightness = value;
26         if (!(led_cdev->flags & LED_SUSPENDED))
27                 led_cdev->brightness_set(led_cdev, value);
28 }
29
30 static inline int led_get_brightness(struct led_classdev *led_cdev)
31 {
32         return led_cdev->brightness;
33 }
34
35 void led_stop_software_blink(struct led_classdev *led_cdev);
36
37 extern struct rw_semaphore leds_list_lock;
38 extern struct list_head leds_list;
39
40 #ifdef CONFIG_LEDS_TRIGGERS
41 void led_trigger_set_default(struct led_classdev *led_cdev);
42 void led_trigger_set(struct led_classdev *led_cdev,
43                         struct led_trigger *trigger);
44 void led_trigger_remove(struct led_classdev *led_cdev);
45
46 static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
47 {
48         return led_cdev->trigger_data;
49 }
50
51 #else
52 #define led_trigger_set_default(x) do {} while (0)
53 #define led_trigger_set(x, y) do {} while (0)
54 #define led_trigger_remove(x) do {} while (0)
55 #define led_get_trigger_data(x) (NULL)
56 #endif
57
58 ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
59                         const char *buf, size_t count);
60 ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
61                         char *buf);
62
63 #endif  /* __LEDS_H_INCLUDED */