kernel-ark/include/asm-arm/mach/time.h
Linus Torvalds 0cd61b68c3 Initial blind fixup for arm for irq changes
Untested, but this should fix up the bulk of the totally mechanical
issues, and should make the actual detail fixing easier.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 10:59:54 -07:00

80 lines
2.2 KiB
C

/*
* linux/include/asm-arm/mach/time.h
*
* Copyright (C) 2004 MontaVista Software, Inc.
*
* 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.
*/
#ifndef __ASM_ARM_MACH_TIME_H
#define __ASM_ARM_MACH_TIME_H
#include <linux/sysdev.h>
/*
* This is our kernel timer structure.
*
* - init
* Initialise the kernels jiffy timer source, claim interrupt
* using setup_irq. This is called early on during initialisation
* while interrupts are still disabled on the local CPU.
* - suspend
* Suspend the kernel jiffy timer source, if necessary. This
* is called with interrupts disabled, after all normal devices
* have been suspended. If no action is required, set this to
* NULL.
* - resume
* Resume the kernel jiffy timer source, if necessary. This
* is called with interrupts disabled before any normal devices
* are resumed. If no action is required, set this to NULL.
* - offset
* Return the timer offset in microseconds since the last timer
* interrupt. Note: this must take account of any unprocessed
* timer interrupt which may be pending.
*/
struct sys_timer {
struct sys_device dev;
void (*init)(void);
void (*suspend)(void);
void (*resume)(void);
#ifndef CONFIG_GENERIC_TIME
unsigned long (*offset)(void);
#endif
#ifdef CONFIG_NO_IDLE_HZ
struct dyn_tick_timer *dyn_tick;
#endif
};
#ifdef CONFIG_NO_IDLE_HZ
#define DYN_TICK_ENABLED (1 << 1)
struct dyn_tick_timer {
spinlock_t lock;
unsigned int state; /* Current state */
int (*enable)(void); /* Enables dynamic tick */
int (*disable)(void); /* Disables dynamic tick */
void (*reprogram)(unsigned long); /* Reprograms the timer */
int (*handler)(int, void *);
};
void timer_dyn_reprogram(void);
#else
#define timer_dyn_reprogram() do { } while (0)
#endif
extern struct sys_timer *system_timer;
extern void timer_tick(void);
/*
* Kernel time keeping support.
*/
struct timespec;
extern int (*set_rtc)(void);
extern void save_time_delta(struct timespec *delta, struct timespec *rtc);
extern void restore_time_delta(struct timespec *delta, struct timespec *rtc);
#endif