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yaml
---
r: 192223
b: refs/heads/master
c: 9446947
h: refs/heads/master
i:
  192221: bc73185
  192219: 675d6a0
  192215: c5fc38c
  192207: 2d6e1a4
  192191: 5d086f8
v: v3
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John Stultz authored and Thomas Gleixner committed Mar 13, 2010
1 parent ac6f41a commit ed75409
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Showing 2 changed files with 8 additions and 41 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: cb0e996378900fa05d5c779d6bfa52d55ebc3407
refs/heads/master: 944694716d6ea3c274a73c830bf33e194bad4bcd
47 changes: 7 additions & 40 deletions trunk/arch/m32r/kernel/time.c
Original file line number Diff line number Diff line change
Expand Up @@ -105,24 +105,6 @@ u32 arch_gettimeoffset(void)
return elapsed_time * 1000;
}

/*
* In order to set the CMOS clock precisely, set_rtc_mmss has to be
* called 500 ms after the second nowtime has started, because when
* nowtime is written into the registers of the CMOS clock, it will
* jump to the next second precisely 500 ms later. Check the Motorola
* MC146818A or Dallas DS12887 data sheet for details.
*
* BUG: This routine does not handle hour overflow properly; it just
* sets the minutes. Usually you won't notice until after reboot!
*/
static inline int set_rtc_mmss(unsigned long nowtime)
{
return 0;
}

/* last time the cmos clock got updated */
static long last_rtc_update = 0;

/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
Expand All @@ -138,23 +120,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));
#endif
/*
* If we have an externally synchronized Linux clock, then update
* CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
* called as close as possible to 500 ms before the new second starts.
*/
write_seqlock(&xtime_lock);
if (ntp_synced()
&& xtime.tv_sec > last_rtc_update + 660
&& (xtime.tv_nsec / 1000) >= 500000 - ((unsigned)TICK_SIZE) / 2
&& (xtime.tv_nsec / 1000) <= 500000 + ((unsigned)TICK_SIZE) / 2)
{
if (set_rtc_mmss(xtime.tv_sec) == 0)
last_rtc_update = xtime.tv_sec;
else /* do it again in 60 s */
last_rtc_update = xtime.tv_sec - 600;
}
write_sequnlock(&xtime_lock);
/* As we return to user mode fire off the other CPU schedulers..
this is basically because we don't yet share IRQ's around.
This message is rigged to be safe on the 386 - basically it's
Expand All @@ -174,7 +139,7 @@ static struct irqaction irq0 = {
.name = "MFT2",
};

void __init time_init(void)
void read_persistent_clock(struct timespec *ts)
{
unsigned int epoch, year, mon, day, hour, min, sec;

Expand All @@ -194,11 +159,13 @@ void __init time_init(void)
epoch = 1952;
year += epoch;

xtime.tv_sec = mktime(year, mon, day, hour, min, sec);
xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
set_normalized_timespec(&wall_to_monotonic,
-xtime.tv_sec, -xtime.tv_nsec);
ts->tv_sec = mktime(year, mon, day, hour, min, sec);
ts->tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
}


void __init time_init(void)
{
#if defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_XNUX2) \
|| defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_M32700) \
|| defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)
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