112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
/*
|
|
* 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/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);
|
|
}
|