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/*
* linux/arch/arm/mach-pxa/leds-trizeps4.c
*
* Author: Jürgen Schindele
* Created: 20 02, 2006
* Copyright: Jürgen Schindele
*
* 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/system.h>
#include <asm/types.h>
#include <asm/leds.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-gpio.h>
#include <asm/arch/trizeps4.h>
#include "leds.h"
#define LED_STATE_ENABLED 1
#define LED_STATE_CLAIMED 2
#define SYS_BUSY 0x01
#define HEARTBEAT 0x02
#define BLINK 0x04
static unsigned int led_state;
static unsigned int hw_led_state;
void trizeps4_leds_event(led_event_t evt)
{
unsigned long flags;
local_irq_save(flags);
switch (evt) {
case led_start:
hw_led_state = 0;
pxa_gpio_mode( GPIO_SYS_BUSY_LED | GPIO_OUT); /* LED1 */
pxa_gpio_mode( GPIO_HEARTBEAT_LED | GPIO_OUT); /* LED2 */
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 ^= HEARTBEAT;
break;
#endif
#ifdef CONFIG_LEDS_CPU
case led_idle_start:
hw_led_state &= ~SYS_BUSY;
break;
case led_idle_end:
hw_led_state |= SYS_BUSY;
break;
#endif
case led_halted:
break;
case led_green_on:
hw_led_state |= BLINK;
break;
case led_green_off:
hw_led_state &= ~BLINK;
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) {
switch (hw_led_state) {
case 0:
GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
break;
case 1:
GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
break;
case 2:
GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
break;
case 3:
GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
break;
}
}
else {
/* turn all off */
GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
}
local_irq_restore(flags);
}
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