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MN10300: Use clocksource_register_hz()

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clocksource_register_hz() calculates the shift/mult pair for the
clocksource. Remove the mn10300 duplicate implementation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
Thomas Gleixner 2011-03-18 16:52:50 +00:00 committed by David Howells
parent 73a173a411
commit 817890ba15
3 changed files with 1 additions and 21 deletions
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3
arch/mn10300/kernel/csrc-mn10300.c
View file

@ -29,7 +29,6 @@ static struct clocksource clocksource_mn10300 = {
int __init init_clocksource(void)
{
startup_timestamp_counter();
clocksource_set_clock(&clocksource_mn10300, MN10300_TSCCLK);
clocksource_register(&clocksource_mn10300);
clocksource_register_hz(&clocksource_mn10300, MN10300_TSCCLK);
return 0;
}

3
arch/mn10300/kernel/internal.h
View file

@ -37,9 +37,6 @@ extern irqreturn_t local_timer_interrupt(void);
/*
* time.c
*/
#ifdef CONFIG_CEVT_MN10300
extern void clockevent_set_clock(struct clock_event_device *, unsigned int);
#endif
#ifdef CONFIG_CSRC_MN10300
extern void clocksource_set_clock(struct clocksource *, unsigned int);
#endif

16
arch/mn10300/kernel/time.c
View file

@ -93,22 +93,6 @@ irqreturn_t local_timer_interrupt(void)
return IRQ_HANDLED;
}
void __init clocksource_set_clock(struct clocksource *cs, unsigned int clock)
{
u64 temp;
u32 shift;
/* Find a shift value */
for (shift = 32; shift > 0; shift--) {
temp = (u64) NSEC_PER_SEC << shift;
do_div(temp, clock);
if ((temp >> 32) == 0)
break;
}
cs->shift = shift;
cs->mult = (u32) temp;
}
void __cpuinit clockevent_set_clock(struct clock_event_device *cd,
unsigned int clock)
{