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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - arch/mips/include/asm/time.h
2 * Copyright (C) 2001, 2002, MontaVista Software Inc.
3 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
4 * Copyright (c) 2003 Maciej W. Rozycki
6 * include/asm-mips/time.h
7 * header file for the new style time.c file and time services.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
17 #include <linux/rtc.h>
18 #include <linux/spinlock.h>
19 #include <linux/clockchips.h>
20 #include <linux/clocksource.h>
22 extern spinlock_t rtc_lock
;
25 * board specific routines required by time_init().
27 extern void plat_time_init(void);
30 * mips_hpt_frequency - must be set if you intend to use an R4k-compatible
31 * counter as a timer interrupt source.
33 extern unsigned int mips_hpt_frequency
;
36 * The performance counter IRQ on MIPS is a close relative to the timer IRQ
39 extern int (*perf_irq
)(void);
40 extern int __weak
get_c0_perfcount_int(void);
43 * Initialize the calling CPU's compare interrupt as clockevent device
45 extern unsigned int get_c0_compare_int(void);
46 extern int r4k_clockevent_init(void);
48 static inline int mips_clockevent_init(void)
50 #ifdef CONFIG_CEVT_R4K
51 return r4k_clockevent_init();
58 * Initialize the count register as a clocksource
60 extern int init_r4k_clocksource(void);
62 static inline int init_mips_clocksource(void)
64 #ifdef CONFIG_CSRC_R4K
65 return init_r4k_clocksource();
71 static inline void clockevent_set_clock(struct clock_event_device
*cd
,
74 clockevents_calc_mult_shift(cd
, clock
, 4);
77 #endif /* _ASM_TIME_H */