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
20static 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
30static inline int led_get_brightness(struct led_classdev *led_cdev)
31{
32	return led_cdev->brightness;
33}
34
 
 
 
 
 
 
 
35extern struct rw_semaphore leds_list_lock;
36extern struct list_head leds_list;
37
38#ifdef CONFIG_LEDS_TRIGGERS
39void led_trigger_set_default(struct led_classdev *led_cdev);
40void led_trigger_set(struct led_classdev *led_cdev,
41			struct led_trigger *trigger);
42void led_trigger_remove(struct led_classdev *led_cdev);
43
44static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
45{
46	return led_cdev->trigger_data;
47}
48
49#else
50#define led_trigger_set_default(x) do {} while (0)
51#define led_trigger_set(x, y) do {} while (0)
52#define led_trigger_remove(x) do {} while (0)
53#define led_get_trigger_data(x) (NULL)
54#endif
55
56ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
57			const char *buf, size_t count);
58ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
59			char *buf);
60
61#endif	/* __LEDS_H_INCLUDED */

 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/rwsem.h>
17#include <linux/leds.h>
18
 
 
 
 
 
 
 
 
 
 
19static inline int led_get_brightness(struct led_classdev *led_cdev)
20{
21	return led_cdev->brightness;
22}
23
24void led_init_core(struct led_classdev *led_cdev);
25void led_stop_software_blink(struct led_classdev *led_cdev);
26void led_set_brightness_nopm(struct led_classdev *led_cdev,
27				enum led_brightness value);
28void led_set_brightness_nosleep(struct led_classdev *led_cdev,
29				enum led_brightness value);
30
31extern struct rw_semaphore leds_list_lock;
32extern struct list_head leds_list;
33extern struct list_head trigger_list;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
34
35#endif	/* __LEDS_H_INCLUDED */