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/*
* linux/arch/arm/mach-sa1100/leds-badge4.c
*
* Author: Christopher Hoover <ch@hpl.hp.com>
* Copyright (C) 2002 Hewlett-Packard Company
*
* 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/config.h>
#include <linux/init.h>
#include <asm/hardware.h>
#include <asm/leds.h>
#include <asm/system.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_RED GPIO_GPIO(7)
#define LED_GREEN GPIO_GPIO(9)
#define LED_MASK (LED_RED|LED_GREEN)
#define LED_IDLE LED_GREEN
#define LED_TIMER LED_RED
void badge4_leds_event(led_event_t evt)
{
unsigned long flags;
local_irq_save(flags);
switch (evt) {
case led_start:
GPDR |= LED_MASK;
hw_led_state = LED_MASK;
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_MASK;
break;
case led_release:
led_state &= ~LED_STATE_CLAIMED;
hw_led_state = LED_MASK;
break;
#ifdef CONFIG_LEDS_TIMER
case led_timer:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state ^= LED_TIMER;
break;
#endif
#ifdef CONFIG_LEDS_CPU
case led_idle_start:
/* LED off when system is idle */
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state &= ~LED_IDLE;
break;
case led_idle_end:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state |= LED_IDLE;
break;
#endif
case led_red_on:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state &= ~LED_RED;
break;
case led_red_off:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state |= LED_RED;
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;
default:
break;
}
if (led_state & LED_STATE_ENABLED) {
GPSR = hw_led_state;
GPCR = hw_led_state ^ LED_MASK;
}
local_irq_restore(flags);
}
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