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/*
* linux/arch/arm/mach-sa1100/leds-graphicsmaster.c
*
* GraphicsClient Plus LEDs support
* Woojung Huh, Feb 13, 2001
*/
#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_TIMER ADS_LED0 /* green heartbeat */
#define LED_USER ADS_LED1 /* amber, boots to on */
#define LED_IDLE ADS_LED2 /* red has the idle led, if any */
#define LED_MASK (ADS_LED0|ADS_LED1|ADS_LED2)
void graphicsmaster_leds_event(led_event_t evt)
{
unsigned long flags;
save_flags_cli(flags);
switch (evt) {
case led_start:
hw_led_state = 0; /* gc leds are positive logic */
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:
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_green_on:
break;
case led_green_off:
break;
case led_amber_on:
hw_led_state |= LED_USER;
break;
case led_amber_off:
hw_led_state &= ~LED_USER;
break;
case led_red_on:
break;
case led_red_off:
break;
default:
break;
}
if (led_state & LED_STATE_ENABLED) {
GPSR = hw_led_state;
GPCR = hw_led_state ^ LED_MASK;
}
restore_flags(flags);
}
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