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-rw-r--r--arch/arm/include/asm/mach/time.h57
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diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h
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1/*
2 * arch/arm/include/asm/mach/time.h
3 *
4 * Copyright (C) 2004 MontaVista Software, Inc.
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_MACH_TIME_H
11#define __ASM_ARM_MACH_TIME_H
12
13#include <linux/sysdev.h>
14
15/*
16 * This is our kernel timer structure.
17 *
18 * - init
19 * Initialise the kernels jiffy timer source, claim interrupt
20 * using setup_irq. This is called early on during initialisation
21 * while interrupts are still disabled on the local CPU.
22 * - suspend
23 * Suspend the kernel jiffy timer source, if necessary. This
24 * is called with interrupts disabled, after all normal devices
25 * have been suspended. If no action is required, set this to
26 * NULL.
27 * - resume
28 * Resume the kernel jiffy timer source, if necessary. This
29 * is called with interrupts disabled before any normal devices
30 * are resumed. If no action is required, set this to NULL.
31 * - offset
32 * Return the timer offset in microseconds since the last timer
33 * interrupt. Note: this must take account of any unprocessed
34 * timer interrupt which may be pending.
35 */
36struct sys_timer {
37 struct sys_device dev;
38 void (*init)(void);
39 void (*suspend)(void);
40 void (*resume)(void);
41#ifndef CONFIG_GENERIC_TIME
42 unsigned long (*offset)(void);
43#endif
44};
45
46extern struct sys_timer *system_timer;
47extern void timer_tick(void);
48
49/*
50 * Kernel time keeping support.
51 */
52struct timespec;
53extern int (*set_rtc)(void);
54extern void save_time_delta(struct timespec *delta, struct timespec *rtc);
55extern void restore_time_delta(struct timespec *delta, struct timespec *rtc);
56
57#endif