/* | |
* 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 <mach/hardware.h> | |
#include <asm/leds.h> | |
#include <asm/system.h> | |
#include <mach/pxa27x.h> | |
#include <mach/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); | |
} |