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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2001, 2002, MontaVista Software Inc.
* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
* Copyright (c) 2003 Maciej W. Rozycki
*
* include/asm-mips/time.h
* header file for the new style time.c file and time services.
*/
#ifndef _ASM_TIME_H
#define _ASM_TIME_H
#include <linux/rtc.h>
#include <linux/spinlock.h>
#include <linux/clockchips.h>
#include <linux/clocksource.h>
extern spinlock_t rtc_lock;
/*
* board specific routines required by time_init().
*/
extern void plat_time_init(void);
/*
* mips_hpt_frequency - must be set if you intend to use an R4k-compatible
* counter as a timer interrupt source.
*/
extern unsigned int mips_hpt_frequency;
/*
* The performance counter IRQ on MIPS is a close relative to the timer IRQ
* so it lives here.
*/
extern int (*perf_irq)(void);
extern int __weak get_c0_perfcount_int(void);
/*
* Initialize the calling CPU's compare interrupt as clockevent device
*/
extern unsigned int get_c0_compare_int(void);
extern int r4k_clockevent_init(void);
static inline int mips_clockevent_init(void)
{
#ifdef CONFIG_CEVT_R4K
return r4k_clockevent_init();
#else
return -ENXIO;
#endif
}
/*
* Initialize the count register as a clocksource
*/
extern int init_r4k_clocksource(void);
static inline int init_mips_clocksource(void)
{
#ifdef CONFIG_CSRC_R4K
return init_r4k_clocksource();
#else
return 0;
#endif
}
static inline void clockevent_set_clock(struct clock_event_device *cd,
unsigned int clock)
{
clockevents_calc_mult_shift(cd, clock, 4);
}
#endif /* _ASM_TIME_H */