Linux Kernel  3.7.1
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ledtrig-default-on.c
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1 /*
2  * LED Kernel Default ON Trigger
3  *
4  * Copyright 2008 Nick Forbes <[email protected]>
5  *
6  * Based on Richard Purdie's ledtrig-timer.c.
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 
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/leds.h>
18 #include "leds.h"
19 
20 static void defon_trig_activate(struct led_classdev *led_cdev)
21 {
22  __led_set_brightness(led_cdev, led_cdev->max_brightness);
23 }
24 
25 static struct led_trigger defon_led_trigger = {
26  .name = "default-on",
27  .activate = defon_trig_activate,
28 };
29 
30 static int __init defon_trig_init(void)
31 {
32  return led_trigger_register(&defon_led_trigger);
33 }
34 
35 static void __exit defon_trig_exit(void)
36 {
37  led_trigger_unregister(&defon_led_trigger);
38 }
39 
40 module_init(defon_trig_init);
41 module_exit(defon_trig_exit);
42 
43 MODULE_AUTHOR("Nick Forbes <[email protected]>");
44 MODULE_DESCRIPTION("Default-ON LED trigger");
45 MODULE_LICENSE("GPL");