74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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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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#ifndef _ASM_TIME_H
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#define _ASM_TIME_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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* board specific routines required by time_init().
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*/
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extern void plat_time_init(void);
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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.
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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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extern int __weak get_c0_perfcount_int(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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extern unsigned int get_c0_compare_int(void);
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extern int r4k_clockevent_init(void);
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static inline int mips_clockevent_init(void)
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{
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#ifdef CONFIG_CEVT_R4K
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return r4k_clockevent_init();
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#else
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return -ENXIO;
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#endif
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}
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/*
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* Initialize the count register as a clocksource
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*/
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extern int init_r4k_clocksource(void);
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static inline int init_mips_clocksource(void)
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{
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#ifdef CONFIG_CSRC_R4K
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return init_r4k_clocksource();
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#else
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return 0;
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#endif
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}
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static inline void clockevent_set_clock(struct clock_event_device *cd,
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unsigned int clock)
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{
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clockevents_calc_mult_shift(cd, clock, 4);
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}
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#endif /* _ASM_TIME_H */
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