91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/*
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* Copyright (C) 2001, 2002, MontaVista Software Inc.
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* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
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* Copyright (c) 2003 Maciej W. Rozycki
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*
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* include/asm-mips/time.h
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* header file for the new style time.c file and time services.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Please refer to Documentation/mips/time.README.
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*/
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#ifndef _ASM_TIME_H
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#define _ASM_TIME_H
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#include <linux/interrupt.h>
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#include <linux/linkage.h>
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#include <linux/ptrace.h>
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#include <linux/rtc.h>
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#include <linux/spinlock.h>
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#include <linux/clockchips.h>
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#include <linux/clocksource.h>
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extern spinlock_t rtc_lock;
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/*
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* RTC ops. By default, they point to weak no-op RTC functions.
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* rtc_mips_set_time - reverse the above translation and set time to RTC.
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* rtc_mips_set_mmss - similar to rtc_set_time, but only min and sec need
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* to be set. Used by RTC sync-up.
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*/
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extern int rtc_mips_set_time(unsigned long);
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extern int rtc_mips_set_mmss(unsigned long);
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/*
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* Timer interrupt functions.
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* mips_timer_state is needed for high precision timer calibration.
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* mips_timer_ack may be NULL if the interrupt is self-recoverable.
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*/
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extern int (*mips_timer_state)(void);
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/*
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* High precision timer clocksource.
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* If .read is NULL, an R4k-compatible timer setup is attempted.
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*/
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extern struct clocksource clocksource_mips;
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/*
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* profiling and process accouting is done separately in local_timer_interrupt
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*/
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extern void local_timer_interrupt(int irq, void *dev_id);
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/*
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* board specific routines required by time_init().
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*/
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struct irqaction;
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extern void plat_time_init(void);
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extern void plat_timer_setup(struct irqaction *irq);
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/*
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* mips_hpt_frequency - must be set if you intend to use an R4k-compatible
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* counter as a timer interrupt source; otherwise it can be set up
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* automagically with an aid of mips_timer_state.
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*/
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extern unsigned int mips_hpt_frequency;
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/*
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* The performance counter IRQ on MIPS is a close relative to the timer IRQ
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* so it lives here.
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*/
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extern int (*perf_irq)(void);
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/*
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* Initialize the calling CPU's compare interrupt as clockevent device
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*/
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#ifdef CONFIG_CEVT_R4K
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extern void mips_clockevent_init(void);
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#else
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static inline void mips_clockevent_init(void)
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{
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}
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#endif
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extern void clocksource_set_clock(struct clocksource *cs, unsigned int clock);
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extern void clockevent_set_clock(struct clock_event_device *cd,
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unsigned int clock);
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#endif /* _ASM_TIME_H */
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