From: Colin Cross Date: Thu, 18 Nov 2010 00:20:15 +0000 (-0800) Subject: ARM: tegra: timer: Separate clocksource and sched_clock X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=684e94cbcb5add60356d124166e40feb2174f0f1;p=mv-sheeva.git ARM: tegra: timer: Separate clocksource and sched_clock tegra_clocksource_read should not use cnt32_to_63, wrapping is already handled in the clocksource code. Move the cnt32_to_63 into the sched_clock function, and replace the use of clocksource mult and shift with a multiplication by 1000 to convert us to ns. Acked-by: John Stultz Acked-by: Linus Walleij Tested-by: Olof Johansson Signed-off-by: Colin Cross Signed-off-by: Russell King --- diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c index 9057d6fd1d3..b49f2f5025f 100644 --- a/arch/arm/mach-tegra/timer.c +++ b/arch/arm/mach-tegra/timer.c @@ -91,7 +91,7 @@ static void tegra_timer_set_mode(enum clock_event_mode mode, static cycle_t tegra_clocksource_read(struct clocksource *cs) { - return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US)); + return timer_readl(TIMERUS_CNTR_1US); } static struct clock_event_device tegra_clockevent = { @@ -106,14 +106,13 @@ static struct clocksource tegra_clocksource = { .name = "timer_us", .rating = 300, .read = tegra_clocksource_read, - .mask = 0x7FFFFFFFFFFFFFFFULL, + .mask = CLOCKSOURCE_MASK(32), .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; unsigned long long sched_clock(void) { - return clocksource_cyc2ns(tegra_clocksource.read(&tegra_clocksource), - tegra_clocksource.mult, tegra_clocksource.shift); + return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US)) * 1000; } static irqreturn_t tegra_timer_interrupt(int irq, void *dev_id)