mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-02 15:18:19 +00:00
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
|
/*
|
||
|
|
* Driver model for leds and led triggers
|
||
|
|
*
|
||
|
|
* Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
|
||
|
|
* Copyright (C) 2005 Richard Purdie <rpurdie@openedhand.com>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#ifndef __LINUX_LEDS_H_INCLUDED
|
||
|
|
#define __LINUX_LEDS_H_INCLUDED
|
||
|
|
|
||
|
|
struct device;
|
||
|
|
struct class_device;
|
||
|
|
/*
|
||
|
|
* LED Core
|
||
|
|
*/
|
||
|
|
|
||
|
|
enum led_brightness {
|
||
|
|
LED_OFF = 0,
|
||
|
|
LED_HALF = 127,
|
||
|
|
LED_FULL = 255,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct led_classdev {
|
||
|
|
const char *name;
|
||
|
|
int brightness;
|
||
|
|
int flags;
|
||
|
|
#define LED_SUSPENDED (1 << 0)
|
||
|
|
|
||
|
|
/* A function to set the brightness of the led */
|
||
|
|
void (*brightness_set)(struct led_classdev *led_cdev,
|
||
|
|
enum led_brightness brightness);
|
||
|
|
|
||
|
|
struct class_device *class_dev;
|
||
|
|
/* LED Device linked list */
|
||
|
|
struct list_head node;
|
||
|
|
|
||
|
|
/* Trigger data */
|
||
|
|
char *default_trigger;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern int led_classdev_register(struct device *parent,
|
||
|
|
struct led_classdev *led_cdev);
|
||
|
|
extern void led_classdev_unregister(struct led_classdev *led_cdev);
|
||
|
|
extern void led_classdev_suspend(struct led_classdev *led_cdev);
|
||
|
|
extern void led_classdev_resume(struct led_classdev *led_cdev);
|
||
|
|
|
||
|
|
#endif /* __LINUX_LEDS_H_INCLUDED */
|