diff --git a/[refs] b/[refs] index 7ce911aa8a25..6d463c48cf9a 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 95469bd64a7a9ab405b566deb8c81d4aaf67ed9e +refs/heads/master: 5bed10a5ee272fbf18ce0ce764245bbb8f28e2e6 diff --git a/trunk/arch/m68knommu/platform/coldfire/dma_timer.c b/trunk/arch/m68knommu/platform/coldfire/dma_timer.c index b623c993219e..772578b1084f 100644 --- a/trunk/arch/m68knommu/platform/coldfire/dma_timer.c +++ b/trunk/arch/m68knommu/platform/coldfire/dma_timer.c @@ -66,3 +66,19 @@ static int __init init_cf_dt_clocksource(void) } arch_initcall(init_cf_dt_clocksource); + +#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */ +#define CYC2NS_SCALE ((1000000 << CYC2NS_SCALE_FACTOR) / (DMA_FREQ / 1000)) + +static unsigned long long cycles2ns(unsigned long cycl) +{ + return (unsigned long long) ((unsigned long long)cycl * + CYC2NS_SCALE) >> CYC2NS_SCALE_FACTOR; +} + +unsigned long long sched_clock(void) +{ + unsigned long cycl = __raw_readl(DTCN0); + + return cycles2ns(cycl); +}