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leds-simpad.c

/*
 * linux/arch/arm/mach-sa1100/leds-simpad.c
 *
 * Author: Juergen Messerer <juergen.messerer@siemens.ch>
 */
#include <linux/init.h>

#include <mach/hardware.h>
#include <asm/leds.h>
#include <asm/system.h>
#include <mach/simpad.h>

#include "leds.h"


#define LED_STATE_ENABLED     1
#define LED_STATE_CLAIMED     2

static unsigned int led_state;
static unsigned int hw_led_state;

#define     LED_GREEN   (1)
#define     LED_MASK    (1)

extern void set_cs3_bit(int value);
extern void clear_cs3_bit(int value);     

void simpad_leds_event(led_event_t evt)
{
      switch (evt)
      {
      case led_start:
              hw_led_state = LED_GREEN;
            led_state = LED_STATE_ENABLED;
            break;

      case led_stop:
            led_state &= ~LED_STATE_ENABLED;
            break;

      case led_claim:
            led_state |= LED_STATE_CLAIMED;
            hw_led_state = LED_GREEN;
            break;

      case led_release:
            led_state &= ~LED_STATE_CLAIMED;
            hw_led_state = LED_GREEN;
            break;

#ifdef CONFIG_LEDS_TIMER
      case led_timer:
            if (!(led_state & LED_STATE_CLAIMED))
                  hw_led_state ^= LED_GREEN;
            break;
#endif

#ifdef CONFIG_LEDS_CPU
      case led_idle_start:
            break;

      case led_idle_end:
            break;
#endif

      case led_halted:
            break;

      case led_green_on:
            if (led_state & LED_STATE_CLAIMED)
                  hw_led_state |= LED_GREEN;
            break;

      case led_green_off:
            if (led_state & LED_STATE_CLAIMED)
                  hw_led_state &= ~LED_GREEN;
            break;

      case led_amber_on:
            break;

      case led_amber_off:
            break;

      case led_red_on:
            break;

      case led_red_off:
            break;

      default:
            break;
      }

      if  (led_state & LED_STATE_ENABLED)
            set_cs3_bit(LED2_ON);
      else 
              clear_cs3_bit(LED2_ON);
}


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