tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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,
23 enum led_brightness value);
24void led_set_brightness_nosleep(struct led_classdev *led_cdev,
25 enum led_brightness value);
26ssize_t led_trigger_read(struct file *filp, struct kobject *kobj,
27 struct bin_attribute *attr, char *buf,
28 loff_t pos, size_t count);
29ssize_t led_trigger_write(struct file *filp, struct kobject *kobj,
30 struct bin_attribute *bin_attr, char *buf,
31 loff_t pos, size_t count);
32
33extern struct rw_semaphore leds_list_lock;
34extern struct list_head leds_list;
35extern struct list_head trigger_list;
36extern const char * const led_colors[LED_COLOR_ID_MAX];
37
38#endif /* __LEDS_H_INCLUDED */