1/*
 2 *  arch/arm/include/asm/localtimer.h
 3 *
 4 *  Copyright (C) 2004-2005 ARM Ltd.
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License version 2 as
 8 * published by the Free Software Foundation.
 9 */
10#ifndef __ASM_ARM_LOCALTIMER_H
11#define __ASM_ARM_LOCALTIMER_H
12
13#include <linux/errno.h>
14
15struct clock_event_device;
16
17/*
18 * Setup a per-cpu timer, whether it be a local timer or dummy broadcast
19 */
20void percpu_timer_setup(void);
21
22/*
23 * Called from assembly, this is the local timer IRQ handler
24 */
25asmlinkage void do_local_timer(struct pt_regs *);
26
27
28#ifdef CONFIG_LOCAL_TIMERS
29
30#ifdef CONFIG_HAVE_ARM_TWD
31
32#include "smp_twd.h"
33
34#define local_timer_ack()	twd_timer_ack()
35
36#else
37
38/*
39 * Platform provides this to acknowledge a local timer IRQ.
40 * Returns true if the local timer IRQ is to be processed.
41 */
42int local_timer_ack(void);
43
44#endif
45
46/*
47 * Setup a local timer interrupt for a CPU.
48 */
49int local_timer_setup(struct clock_event_device *);
50
51#else
52
53static inline int local_timer_setup(struct clock_event_device *evt)
54{
55	return -ENXIO;
56}
57#endif
58
59#endif