drivers/leds/trigger/ledtrig-ide-disk.c

   1 /*
   2  * LED IDE-Disk Activity Trigger
   3  *
   4  * Copyright 2006 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
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/leds.h>
  18
  19 #define BLINK_DELAY 30
  20
  21 DEFINE_LED_TRIGGER(ledtrig_ide);
  22 static unsigned long ide_blink_delay = BLINK_DELAY;
  23
  24 void ledtrig_ide_activity(void)
  25 {
  26         led_trigger_blink_oneshot(ledtrig_ide,
  27                                   &ide_blink_delay, &ide_blink_delay, 0);
  28 }
  29 EXPORT_SYMBOL(ledtrig_ide_activity);
  30
  31 static int __init ledtrig_ide_init(void)
  32 {
  33         led_trigger_register_simple("ide-disk", &ledtrig_ide);
  34         return 0;
  35 }
  36
  37 static void __exit ledtrig_ide_exit(void)
  38 {
  39         led_trigger_unregister_simple(ledtrig_ide);
  40 }
  41
  42 module_init(ledtrig_ide_init);
  43 module_exit(ledtrig_ide_exit);
  44
  45 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
  46 MODULE_DESCRIPTION("LED IDE Disk Activity Trigger");
  47 MODULE_LICENSE("GPL");