arch/arm/mach-imx/leds-mx1ads.c

   1 /*
   2  * linux/arch/arm/mach-imx/leds-mx1ads.c
   3  *
   4  * Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
   5  *
   6  * Original (leds-footbridge.c) by Russell King
   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/kernel.h>
  15 #include <linux/init.h>
  16 #include <asm/hardware.h>
  17 #include <asm/system.h>
  18 #include <asm/io.h>
  19 #include <asm/leds.h>
  20 #include "leds.h"
  21
  22 /*
  23  * The MX1ADS Board has only one usable LED,
  24  * so select only the timer led or the
  25  * cpu usage led
  26  */
  27 void
  28 mx1ads_leds_event(led_event_t ledevt)
  29 {
  30         unsigned long flags;
  31
  32         local_irq_save(flags);
  33
  34         switch (ledevt) {
  35 #ifdef CONFIG_LEDS_CPU
  36         case led_idle_start:
  37                 DR(0) &= ~(1<<2);
  38                 break;
  39
  40         case led_idle_end:
  41                 DR(0) |= 1<<2;
  42                 break;
  43 #endif
  44
  45 #ifdef CONFIG_LEDS_TIMER
  46         case led_timer:
  47                 DR(0) ^= 1<<2;
  48 #endif
  49         default:
  50                 break;
  51         }
  52         local_irq_restore(flags);
  53 }