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leds-mx1ads.c

/*
 * linux/arch/arm/mach-imx/leds-mx1ads.c
 *
 * Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
 *
 * Original (leds-footbridge.c) by Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/hardware.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/leds.h>
#include "leds.h"

/*
 * The MX1ADS Board has only one usable LED,
 * so select only the timer led or the
 * cpu usage led
 */
void
mx1ads_leds_event(led_event_t ledevt)
{
      unsigned long flags;

      local_irq_save(flags);

      switch (ledevt) {
#ifdef CONFIG_LEDS_CPU
      case led_idle_start:
            DR(0) &= ~(1<<2);
            break;

      case led_idle_end:
            DR(0) |= 1<<2;
            break;
#endif

#ifdef CONFIG_LEDS_TIMER
      case led_timer:
            DR(0) ^= 1<<2;
#endif
      default:
            break;
      }
      local_irq_restore(flags);
}

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