/* * 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. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #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; /* * RTC ops. By default, they point to weak no-op RTC functions. * rtc_mips_set_time - reverse the above translation and set time to RTC. * rtc_mips_set_mmss - similar to rtc_set_time, but only min and sec need * to be set. Used by RTC sync-up. */ extern int rtc_mips_set_time(unsigned long); extern int rtc_mips_set_mmss(unsigned long); /* * 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 [31mCONFIG_CEVT_R4K[0m 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 [31mCONFIG_CSRC_R4K[0m 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 */ |