2 * linux/arch/cris/kernel/time.c
4 * Copyright (C) 1991, 1992, 1995 Linus Torvalds
5 * Copyright (C) 1999, 2000, 2001 Axis Communications AB
7 * 1994-07-02 Alan Modra
8 * fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
9 * 1995-03-26 Markus Kuhn
10 * fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
11 * precision CMOS clock update
12 * 1996-05-03 Ingo Molnar
13 * fixed time warps in do_[slow|fast]_gettimeoffset()
14 * 1997-09-10 Updated NTP code according to technical memorandum Jan '96
15 * "A Kernel Model for Precision Timekeeping" by Dave Mills
17 * Linux/CRIS specific code:
19 * Authors: Bjorn Wesen
24 #include <linux/errno.h>
25 #include <linux/module.h>
26 #include <linux/param.h>
27 #include <linux/jiffies.h>
28 #include <linux/bcd.h>
29 #include <linux/timex.h>
30 #include <linux/init.h>
31 #include <linux/profile.h>
32 #include <linux/sched.h> /* just for sched_clock() - funny that */
37 #define TICK_SIZE tick
39 extern unsigned long loops_per_jiffy; /* init/main.c */
40 unsigned long loops_per_usec;
42 int set_rtc_mmss(unsigned long nowtime)
44 D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
48 /* grab the time from the RTC chip */
49 unsigned long get_cmos_time(void)
55 int update_persistent_clock(struct timespec now)
57 return set_rtc_mmss(now.tv_sec);
60 void read_persistent_clock(struct timespec *ts)
67 extern void cris_profile_sample(struct pt_regs* regs);
70 cris_do_profile(struct pt_regs* regs)
73 #ifdef CONFIG_SYSTEM_PROFILER
74 cris_profile_sample(regs);
77 #ifdef CONFIG_PROFILING
78 profile_tick(CPU_PROFILING);
82 unsigned long long sched_clock(void)
84 return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
89 __init init_udelay(void)
91 loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
95 __initcall(init_udelay);