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m68knommu: complete generic time 

do_set_rtc() isn't required because the work that is handled is
allready served if read_persistent_clock() & update_persistent_clock()
are implemented and CONFIG_GENERIC_CMOS_UPDATE is. sync_cmos_clock()
looks very familiar :)

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Sebastian Siewior 2008-04-28 11:43:01 +02:00 committed by Greg Ungerer
parent 0df185f5a1
commit 95469bd64a
2 changed files with 15 additions and 29 deletions
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4
arch/m68knommu/Kconfig
View File

@ -58,6 +58,10 @@ config GENERIC_TIME
bool
default y
config GENERIC_CMOS_UPDATE
bool
default y
config TIME_LOW_RES
bool
default y

40
arch/m68knommu/kernel/time.c
View File

@ -33,27 +33,6 @@ static inline int set_rtc_mmss(unsigned long nowtime)
return -1;
}
static inline void do_set_rtc(void)
{
/* last time the cmos clock got updated */
static long last_rtc_update=0;
/*
* 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.
*/
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
last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */
}
}
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
@ -68,8 +47,6 @@ irqreturn_t arch_timer_interrupt(int irq, void *dummy)
do_timer(1);
do_set_rtc();
write_sequnlock(&xtime_lock);
#ifndef CONFIG_SMP
@ -93,12 +70,17 @@ static unsigned long read_rtc_mmss(void)
return mktime(year, mon, day, hour, min, sec);;
}
void time_init(void)
unsigned long read_persistent_clock(void)
{
xtime.tv_sec = read_rtc_mmss();
xtime.tv_nsec = 0;
wall_to_monotonic.tv_sec = -xtime.tv_sec;
hw_timer_init();
return read_rtc_mmss();
}
int update_persistent_clock(struct timespec now)
{
return set_rtc_mmss(now.tv_sec);
}
void time_init(void)
{
hw_timer_init();
}