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 struct clock_event_device;
14 
15 /*
16  * Setup a per-cpu timer, whether it be a local timer or dummy broadcast
17  */
18 void percpu_timer_setup(void);
19 
20 /*
21  * Called from assembly, this is the local timer IRQ handler
22  */
23 asmlinkage void do_local_timer(struct pt_regs *);
24 
25 
26 #ifdef CONFIG_LOCAL_TIMERS
27 
28 #ifdef CONFIG_HAVE_ARM_TWD
29 
30 #include "smp_twd.h"
31 
32 #define local_timer_ack()	twd_timer_ack()
33 
34 #else
35 
36 /*
37  * Platform provides this to acknowledge a local timer IRQ.
38  * Returns true if the local timer IRQ is to be processed.
39  */
40 int local_timer_ack(void);
41 
42 #endif
43 
44 /*
45  * Setup a local timer interrupt for a CPU.
46  */
47 int local_timer_setup(struct clock_event_device *);
48 
49 #else
50 
local_timer_setup(struct clock_event_device * evt)51 static inline int local_timer_setup(struct clock_event_device *evt)
52 {
53 	return -ENXIO;
54 }
55 #endif
56 
57 #endif
58