[mirror_ubuntu-artful-kernel.git] / include / asm-arm / mach / time.h

/*
 * 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
};

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
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/asm-arm/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	*/
	36	struct sys_timer {
	37	struct sys_device dev;
	38	void (*init)(void);
	39	void (*suspend)(void);
	40	void (*resume)(void);
746140c7	41	#ifndef CONFIG_GENERIC_TIME
1da177e4	42	unsigned long (*offset)(void);
746140c7	43	#endif
1da177e4 LT	44	};
	45
	46	extern struct sys_timer *system_timer;
0cd61b68	47	extern void timer_tick(void);
1da177e4 LT	48
	49	/*
	50	* Kernel time keeping support.
	51	*/
d061daa0	52	struct timespec;
1da177e4 LT	53	extern int (*set_rtc)(void);
	54	extern void save_time_delta(struct timespec delta, struct timespec rtc);
	55	extern void restore_time_delta(struct timespec delta, struct timespec rtc);
	56
	57	#endif