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>
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@ -91,7 +91,7 @@ static void tegra_timer_set_mode(enum clock_event_mode mode,
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static cycle_t tegra_clocksource_read(struct clocksource *cs)
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{
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return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US));
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return timer_readl(TIMERUS_CNTR_1US);
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}
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static struct clock_event_device tegra_clockevent = {
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@ -106,14 +106,13 @@ static struct clocksource tegra_clocksource = {
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.name = "timer_us",
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.rating = 300,
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.read = tegra_clocksource_read,
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.mask = 0x7FFFFFFFFFFFFFFFULL,
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.mask = CLOCKSOURCE_MASK(32),
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.flags = CLOCK_SOURCE_IS_CONTINUOUS,
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};
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unsigned long long sched_clock(void)
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{
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return clocksource_cyc2ns(tegra_clocksource.read(&tegra_clocksource),
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tegra_clocksource.mult, tegra_clocksource.shift);
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return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US)) * 1000;
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}
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static irqreturn_t tegra_timer_interrupt(int irq, void *dev_id)
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