linux/arch/arm/mach-omap2/timer-mpu.c

/*
 * The MPU local timer source file. In OMAP4, both cortex-a9 cores have
 * own timer in it's MPU domain. These timers will be driving the
 * linux kernel SMP tick framework when active. These timers are not
 * part of the wake up domain.
 *
 * Copyright (C) 2009 Texas Instruments, Inc.
 *
 * Author:
 *      Santosh Shilimkar <santosh.shilimkar@ti.com>
 *
 * This file is based on arm realview smp platform file.
 * Copyright (C) 2002 ARM Ltd.
 *
 * 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 <linux/smp.h>
#include <linux/clockchips.h>
#include <asm/irq.h>
#include <asm/smp_twd.h>
#include <asm/localtimer.h>

/*
 * Setup the local clock events for a CPU.
 */
int __cpuinit local_timer_setup(struct clock_event_device *evt)
{
	/* Local timers are not supprted on OMAP4430 ES1.0 */
	if (omap_rev() == OMAP4430_REV_ES1_0)
		return -ENXIO;

	evt->irq = OMAP44XX_IRQ_LOCALTIMER;
	twd_timer_setup(evt);
	return 0;
}