diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2009-11-11 15:05:34 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2009-11-13 20:46:24 +0100 |
| commit | e3a4fab0c0c30e21e104712f4e9cb39f175d0f21 (patch) | |
| tree | 3e785ac76f07c043f9eaecc59427cda61bc54b67 /arch/mips | |
| parent | clocksource: Provide a generic mult/shift factor calculation (diff) | |
| download | linux-e3a4fab0c0c30e21e104712f4e9cb39f175d0f21.tar.xz linux-e3a4fab0c0c30e21e104712f4e9cb39f175d0f21.zip | |
mips: Use generic mult/shift factor calculation for clocks
Replace the MIPS functions of mult/shift factor calculation for clock
events and clock sources with inline functions which call the generic
functions. The minimum guaranteed conversion range is set to 4 seconds
which corresponds to the current MIPS implementation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Cc: John Stultz <johnstul@us.ibm.com>
LKML-Reference: <20091111134229.807255074@linutronix.de>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/time.h | 14 | ||||
| -rw-r--r-- | arch/mips/kernel/time.c | 33 |
2 files changed, 11 insertions, 36 deletions
diff --git a/arch/mips/include/asm/time.h b/arch/mips/include/asm/time.h index df6a430de5eb..c7f1bfef1574 100644 --- a/arch/mips/include/asm/time.h +++ b/arch/mips/include/asm/time.h @@ -84,8 +84,16 @@ static inline int init_mips_clocksource(void) #endif } -extern void clocksource_set_clock(struct clocksource *cs, unsigned int clock); -extern void clockevent_set_clock(struct clock_event_device *cd, - unsigned int clock); +static inline void clocksource_set_clock(struct clocksource *cs, + unsigned int clock) +{ + clocksource_calc_mult_shift(cs, clock, 4); +} + +static inline void clockevent_set_clock(struct clock_event_device *cd, + unsigned int clock) +{ + clockevents_calc_mult_shift(cd, clock, 4); +} #endif /* _ASM_TIME_H */ diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c index 1f467d534642..fb7497405510 100644 --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -71,39 +71,6 @@ EXPORT_SYMBOL(perf_irq); unsigned int mips_hpt_frequency; -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) -{ - u64 temp; - u32 shift; - - /* Find a shift value */ - for (shift = 32; shift > 0; shift--) { - temp = (u64) clock << shift; - do_div(temp, NSEC_PER_SEC); - if ((temp >> 32) == 0) - break; - } - cd->shift = shift; - cd->mult = (u32) temp; -} - /* * This function exists in order to cause an error due to a duplicate * definition if platform code should have its own implementation. The hook |