1/*
  2 *  linux/arch/cris/kernel/time.c
  3 *
  4 *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
  5 *  Copyright (C) 1999, 2000, 2001 Axis Communications AB
  6 *
  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
 16 *
 17 * Linux/CRIS specific code:
 18 *
 19 * Authors:    Bjorn Wesen
 20 *             Johan Adolfsson
 21 *
 22 */
 23
 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 */
 33
 34
 35#define D(x)
 36
 37#define TICK_SIZE tick
 38
 39extern unsigned long loops_per_jiffy; /* init/main.c */
 40unsigned long loops_per_usec;
 41
 42
 43#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
 44extern unsigned long do_slow_gettimeoffset(void);
 45static unsigned long (*do_gettimeoffset)(void) = do_slow_gettimeoffset;
 46
 47u32 arch_gettimeoffset(void)
 48{
 49       return do_gettimeoffset() * 1000;
 50}
 51#endif
 52
 53int set_rtc_mmss(unsigned long nowtime)
 54{
 55	D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
 56	return 0;
 57}
 58
 59/* grab the time from the RTC chip */
 60unsigned long get_cmos_time(void)
 61{
 62	return 0;
 63}
 64
 65
 66int update_persistent_clock(struct timespec now)
 67{
 68	return set_rtc_mmss(now.tv_sec);
 69}
 70
 71void read_persistent_clock(struct timespec *ts)
 72{
 73	ts->tv_sec = 0;
 74	ts->tv_nsec = 0;
 75}
 76
 77
 78extern void cris_profile_sample(struct pt_regs* regs);
 79
 80void
 81cris_do_profile(struct pt_regs* regs)
 82{
 83
 84#ifdef CONFIG_SYSTEM_PROFILER
 85        cris_profile_sample(regs);
 86#endif
 87
 88#ifdef CONFIG_PROFILING
 89	profile_tick(CPU_PROFILING);
 90#endif
 91}
 92
 93unsigned long long sched_clock(void)
 94{
 95	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
 96		get_ns_in_jiffie();
 97}
 98
 99static int
100__init init_udelay(void)
101{
102	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
103	return 0;
104}
105
106__initcall(init_udelay);