Commit 30fe7643 authored by Jaecheol Lee's avatar Jaecheol Lee Committed by Kukjin Kim
Browse files

ARM: EXYNOS4: Update HRT for supporting PM 



This patch updates HRT driver for supporting PM.
The resume function of PWM4 timer which is used clocksource is needed
when kernel is resuming for restarting.

Signed-off-by: default avatarJaecheol Lee <jc.lee@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 1663895c

arch/arm/mach-exynos4/time.c

+16 −0
Original line number Original line Diff line number Diff line
@@ -206,12 +206,28 @@ static cycle_t exynos4_pwm4_read(struct clocksource *cs) 
	return (cycle_t) ~__raw_readl(S3C_TIMERREG(0x40));

	return (cycle_t) ~__raw_readl(S3C_TIMERREG(0x40));

}

}





static void exynos4_pwm4_resume(struct clocksource *cs)

{

	unsigned long pclk;



	pclk = clk_get_rate(timerclk);



	clk_set_rate(tdiv4, pclk / 2);

	clk_set_parent(tin4, tdiv4);



	exynos4_pwm_init(4, ~0);

	exynos4_pwm_start(4, 1);

}



struct clocksource pwm_clocksource = {

struct clocksource pwm_clocksource = {

	.name		= "pwm_timer4",

	.name		= "pwm_timer4",

	.rating		= 250,

	.rating		= 250,

	.read		= exynos4_pwm4_read,

	.read		= exynos4_pwm4_read,

	.mask		= CLOCKSOURCE_MASK(32),

	.mask		= CLOCKSOURCE_MASK(32),

	.flags		= CLOCK_SOURCE_IS_CONTINUOUS ,

	.flags		= CLOCK_SOURCE_IS_CONTINUOUS ,

#ifdef CONFIG_PM

	.resume		= exynos4_pwm4_resume,

#endif

};

};





static void __init exynos4_clocksource_init(void)

static void __init exynos4_clocksource_init(void)