diff options
| -rw-r--r-- | arch/mips/kernel/time.c | 39 | ||||
| -rw-r--r-- | include/asm-mips/time.h | 5 |
2 files changed, 36 insertions, 8 deletions
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c index ca38fb0faed3..c4e6866d5cbc 100644 --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -171,25 +171,48 @@ struct clocksource clocksource_mips = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; -static void __init init_mips_clocksource(void) +void __init clocksource_set_clock(struct clocksource *cs, unsigned int clock) { u64 temp; u32 shift; - if (!mips_hpt_frequency || clocksource_mips.read == null_hpt_read) - return; + /* 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; - /* Calclate a somewhat reasonable rating value */ - clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000; /* Find a shift value */ for (shift = 32; shift > 0; shift--) { temp = (u64) NSEC_PER_SEC << shift; - do_div(temp, mips_hpt_frequency); + do_div(temp, clock); if ((temp >> 32) == 0) break; } - clocksource_mips.shift = shift; - clocksource_mips.mult = (u32)temp; + cd->shift = shift; + cd->mult = (u32) temp; +} + +static void __init init_mips_clocksource(void) +{ + if (!mips_hpt_frequency || clocksource_mips.read == null_hpt_read) + return; + + /* Calclate a somewhat reasonable rating value */ + clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000; + + clocksource_set_clock(&clocksource_mips, mips_hpt_frequency); clocksource_register(&clocksource_mips); } diff --git a/include/asm-mips/time.h b/include/asm-mips/time.h index cf76f4f7435f..bc47af313bcd 100644 --- a/include/asm-mips/time.h +++ b/include/asm-mips/time.h @@ -21,6 +21,7 @@ #include <linux/ptrace.h> #include <linux/rtc.h> #include <linux/spinlock.h> +#include <linux/clockchips.h> #include <linux/clocksource.h> extern spinlock_t rtc_lock; @@ -83,4 +84,8 @@ static inline void mips_clockevent_init(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); + #endif /* _ASM_TIME_H */ |