/* * linux/arch/arm/mach-s3c2410/leds-smdk.c * * Based on linux/arch/arm/mach-sa1100/leds-assabet.c (by John Dorsey) * * Copyright (C) 2002 MIZI Research, Inc. * * Written by Janghoon Lyu <nandy@mizi.com> */#include <linux/config.h>#include <linux/init.h>#include <asm/hardware.h>#include <asm/leds.h>#include <asm/system.h>#include <asm/arch/smdk.h>#include "leds.h"#define LED_STATE_ENABLED	1#define LED_STATE_CLAIMED	2#define LED0		(1 << 0)#define LED1		(1 << 1)#define LED2		(1 << 2)#define LED3		(1 << 3)	static unsigned int led_state;static unsigned int hw_led_state;static inline voidled_update(unsigned int state){#if 0	GPFDAT &= ~(0xf << 4);	GPFDAT |= (state << 4);#else	write_gpio_bit(GPIO_LED1, (state & LED0));	write_gpio_bit(GPIO_LED2, ((state & LED1) >> 1));	write_gpio_bit(GPIO_LED3, ((state & LED2) >> 2));	write_gpio_bit(GPIO_LED4, ((state & LED3) >> 3));#endif}voidsmdk_leds_event(led_event_t evt){	unsigned long flags;	local_irq_save(flags);	switch (evt) {	case led_start:		hw_led_state = (LED1 | LED2 | LED3);		led_state = LED_STATE_ENABLED;		break;	case led_stop:		led_state &= ~LED_STATE_ENABLED;		hw_led_state = (LED0 | LED1 | LED2 | LED3);		led_update(hw_led_state);		break;	case led_claim:		led_state |= LED_STATE_CLAIMED;		hw_led_state = (LED0 | LED1 | LED2 | LED3);		break;	case led_release:		led_state &= ~LED_STATE_CLAIMED;		hw_led_state = (LED1 | LED2 | LED3);		break;#ifdef CONFIG_LEDS_TIMER	case led_timer:		if (!(led_state & LED_STATE_CLAIMED))			hw_led_state ^= LED3;		break;#endif#ifdef CONFIG_LEDS_CPU	case led_idle_start:		if (!(led_state & LED_STATE_CLAIMED))			hw_led_state |= LED2;		break;	case led_idle_end:		if (!(led_state & LED_STATE_CLAIMED))			hw_led_state &= ~LED2;		break;#endif	case led_halted:		break;	case led_green_on:		if (led_state & LED_STATE_CLAIMED)			hw_led_state &= ~LED2;		break;	case led_green_off:		if (led_state & LED_STATE_CLAIMED)			hw_led_state |= LED2;		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)		led_update(hw_led_state);	local_irq_restore(flags);}