drivers/leds/ledtrig-default-on.c

   1 /*
   2  * LED Kernel Default ON Trigger
   3  *
   4  * Copyright 2008 Nick Forbes <nick.forbes@incepta.com>
   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 <nick.forbes@incepta.com>");
  44 MODULE_DESCRIPTION("Default-ON LED trigger");
  45 MODULE_LICENSE("GPL");