1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * LED Core
 4 *
 5 * Copyright 2005 Openedhand Ltd.
 6 *
 7 * Author: Richard Purdie <rpurdie@openedhand.com>
 
 
 
 
 
 8 */
 9#ifndef __LEDS_H_INCLUDED
10#define __LEDS_H_INCLUDED
11
 
12#include <linux/rwsem.h>
13#include <linux/leds.h>
14
 
 
 
 
 
 
 
 
 
 
15static inline int led_get_brightness(struct led_classdev *led_cdev)
16{
17	return led_cdev->brightness;
18}
19
20void led_init_core(struct led_classdev *led_cdev);
21void led_stop_software_blink(struct led_classdev *led_cdev);
22void led_set_brightness_nopm(struct led_classdev *led_cdev, unsigned int value);
23void led_set_brightness_nosleep(struct led_classdev *led_cdev, unsigned int value);
24ssize_t led_trigger_read(struct file *filp, struct kobject *kobj,
25			struct bin_attribute *attr, char *buf,
26			loff_t pos, size_t count);
27ssize_t led_trigger_write(struct file *filp, struct kobject *kobj,
28			struct bin_attribute *bin_attr, char *buf,
29			loff_t pos, size_t count);
30
31extern struct rw_semaphore leds_list_lock;
32extern struct list_head leds_list;
33extern struct list_head trigger_list;
34extern const char * const led_colors[LED_COLOR_ID_MAX];
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
35
36#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/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 */