leds-scb9328.c

来自「优龙2410linux2.6.8内核源代码」· C语言 代码 · 共 53 行

/*
 * linux/arch/arm/mach-imx/leds-scb9328.c
 *
 * Copyright (c) 2004 Sascha Hauer <[e-mail]>
 *
 * Original (leds-footbridge.c) by Russell King
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <asm/hardware.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include "leds.h"

static int timer_led = 0;

void
scb9328_leds_event(led_event_t ledevt)
{
	unsigned long flags;

	local_irq_save(flags);

	switch (ledevt) {
	case led_idle_start:
		scb9328_ledoff(1);
		break;

	case led_idle_end:
		scb9328_ledon(1);
		break;

	case led_timer:
		timer_led = !timer_led;
		if (timer_led)
			scb9328_ledon(2);
		else
			scb9328_ledoff(2);
		break;
	default:
		break;
	}
	local_irq_restore(flags);
}