From mboxrd@z Thu Jan 1 00:00:00 1970 From: ccross@android.com (Colin Cross) Date: Wed, 17 Nov 2010 16:20:15 -0800 Subject: [PATCH] ARM: tegra: timer: Separate clocksource and sched_clock Message-ID: <1290039615-23407-1-git-send-email-ccross@android.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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. Change-Id: Ica1158c3fbed0ba53391f7db61180129a957511d Signed-off-by: Colin Cross --- arch/arm/mach-tegra/timer.c | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c index 9057d6f..b49f2f5 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) -- 1.7.3.1