target/linux/rb532-2.6/files/drivers/leds/leds-rb500.c

   1 /*
   2  * linux/drivers/leds/leds-rb500.c
   3  *
   4  * Copyright (C) 2006
   5  *     Twente Institute for Wireless and Mobile Communications BV
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details (see file GPLv2).
  16  *
  17  * Author: Tjalling Hattink <tjalling.hattink@ti-wmc.nl>
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/leds.h>
  24 #include <asm/rc32434/rb.h>
  25
  26 static void rb500led_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
  27 {
  28         if (value)
  29                 changeLatchU5(LO_ULED, 0);
  30         else
  31                 changeLatchU5(0, LO_ULED);
  32 }
  33
  34 static struct led_classdev rb500_amber_led = {
  35         .name                   = "rb500led:amber",
  36         .default_trigger        = "ide-disk",
  37         .brightness_set         = rb500led_amber_set,
  38 };
  39
  40 static int rb500led_probe(struct platform_device *pdev)
  41 {
  42         int ret;
  43
  44         changeLatchU5(0, LO_ULED);
  45
  46         ret = led_classdev_register(&pdev->dev, &rb500_amber_led);
  47
  48         return ret;
  49 }
  50
  51 static int rb500led_remove(struct platform_device *pdev)
  52 {
  53         led_classdev_unregister(&rb500_amber_led);
  54
  55         return 0;
  56 }
  57
  58 static struct platform_driver rb500led_driver = {
  59         .probe          = rb500led_probe,
  60         .remove         = rb500led_remove,
  61         .driver         = {
  62                 .name           = "rb500-led",
  63         },
  64 };
  65
  66 static int __init rb500led_init(void)
  67 {
  68         return platform_driver_register(&rb500led_driver);
  69 }
  70
  71 static void __exit rb500led_exit(void)
  72 {
  73         platform_driver_unregister(&rb500led_driver);
  74 }
  75
  76 module_init(rb500led_init);
  77 module_exit(rb500led_exit);
  78
  79 MODULE_AUTHOR("tjalling.hattink@ti-wmc.nl");
  80 MODULE_DESCRIPTION("Mikrotik RB500 LED driver");
  81 MODULE_LICENSE("GPL");