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| author | Colin Cross <ccross@android.com> | 2010-11-17 16:20:15 -0800 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-12-22 22:44:42 +0000 |
| commit | 684e94cbcb5add60356d124166e40feb2174f0f1 (patch) | |
| tree | dfdcf2048c6ac76c8c55134d1dc5633d495c4f4a | |
| parent | 11e718a6535c0c7a375b24c3ad60a98b988090c8 (diff) | |
| download | kernel_samsung_smdk4412-684e94cbcb5add60356d124166e40feb2174f0f1.zip kernel_samsung_smdk4412-684e94cbcb5add60356d124166e40feb2174f0f1.tar.gz kernel_samsung_smdk4412-684e94cbcb5add60356d124166e40feb2174f0f1.tar.bz2 | |
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 <johnstul@us.ibm.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Tested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | 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) |