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/*
* linux/arch/arm/mach-pxa/leds-mainstone.c
*
* Author: Nicolas Pitre
* Created: Nov 05, 2002
* Copyright: MontaVista Software Inc.
*
* 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/arch/hardware.h>
#include <asm/leds.h>
#include <asm/system.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/mainstone.h>
#include "leds.h"
/* 8 discrete leds available for general use: */
#define D28 (1 << 0)
#define D27 (1 << 1)
#define D26 (1 << 2)
#define D25 (1 << 3)
#define D24 (1 << 4)
#define D23 (1 << 5)
#define D22 (1 << 6)
#define D21 (1 << 7)
#define LED_STATE_ENABLED 1
#define LED_STATE_CLAIMED 2
static unsigned int led_state;
static unsigned int hw_led_state;
void mainstone_leds_event(led_event_t evt)
{
unsigned long flags;
local_irq_save(flags);
switch (evt) {
case led_start:
hw_led_state = 0;
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 = 0;
break;
case led_release:
led_state &= ~LED_STATE_CLAIMED;
hw_led_state = 0;
break;
#ifdef CONFIG_LEDS_TIMER
case led_timer:
hw_led_state ^= D26;
break;
#endif
#ifdef CONFIG_LEDS_CPU
case led_idle_start:
hw_led_state &= ~D27;
break;
case led_idle_end:
hw_led_state |= D27;
break;
#endif
case led_halted:
break;
case led_green_on:
hw_led_state |= D21;
break;
case led_green_off:
hw_led_state &= ~D21;
break;
case led_amber_on:
hw_led_state |= D22;
break;
case led_amber_off:
hw_led_state &= ~D22;
break;
case led_red_on:
hw_led_state |= D23;
break;
case led_red_off:
hw_led_state &= ~D23;
break;
default:
break;
}
if (led_state & LED_STATE_ENABLED)
MST_LEDCTRL = (MST_LEDCTRL | 0xff) & ~hw_led_state;
else
MST_LEDCTRL |= 0xff;
local_irq_restore(flags);
}
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