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clocksource: exynos_mct: register sched_clock callback

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Use the clocksource mct-frc for sched_clock

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Vincent Guittot 2014-05-02 22:27:01 +09:00 • committed by Kukjin Kim
parent c9eaa447e7
commit 93bfb76975
1 changed files with 8 additions and 0 deletions
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8
drivers/clocksource/exynos_mct.c
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@ -24,6 +24,7 @@
#include <linux/of_irq.h> #include <linux/of_irq.h>
#include <linux/of_address.h> #include <linux/of_address.h>
#include <linux/clocksource.h> #include <linux/clocksource.h>
#include <linux/sched_clock.h>
#define EXYNOS4_MCTREG(x) (x) #define EXYNOS4_MCTREG(x) (x)
#define EXYNOS4_MCT_G_CNT_L EXYNOS4_MCTREG(0x100) #define EXYNOS4_MCT_G_CNT_L EXYNOS4_MCTREG(0x100)
@ -192,12 +193,19 @@ struct clocksource mct_frc = {
.resume = exynos4_frc_resume, .resume = exynos4_frc_resume,
}; };
static u64 notrace exynos4_read_sched_clock(void)
{
return exynos4_frc_read(&mct_frc);
}
static void __init exynos4_clocksource_init(void) static void __init exynos4_clocksource_init(void)
{ {
exynos4_mct_frc_start(0, 0); exynos4_mct_frc_start(0, 0);
if (clocksource_register_hz(&mct_frc, clk_rate)) if (clocksource_register_hz(&mct_frc, clk_rate))
panic("%s: can't register clocksource\n", mct_frc.name); panic("%s: can't register clocksource\n", mct_frc.name);
sched_clock_register(exynos4_read_sched_clock, 64, clk_rate);
} }
static void exynos4_mct_comp0_stop(void) static void exynos4_mct_comp0_stop(void)