Commit 4134d29b authored by Viresh Kumar's avatar Viresh Kumar Committed by Daniel Lezcano
Browse files

clockevents/drivers/tegra20: Migrate to new 'set-state' interface 



Migrate tegra20 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

Cc: Thierry Reding <treding@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 6de6c977

drivers/clocksource/tegra20_timer.c

+24 −21
Original line number Diff line number Diff line
@@ -72,33 +72,36 @@ static int tegra_timer_set_next_event(unsigned long cycles, 
	return 0;

}



static void tegra_timer_set_mode(enum clock_event_mode mode,

				    struct clock_event_device *evt)

static inline void timer_shutdown(struct clock_event_device *evt)

{

	u32 reg;



	timer_writel(0, TIMER3_BASE + TIMER_PTV);

}



	switch (mode) {

	case CLOCK_EVT_MODE_PERIODIC:

		reg = 0xC0000000 | ((1000000/HZ)-1);

		timer_writel(reg, TIMER3_BASE + TIMER_PTV);

		break;

	case CLOCK_EVT_MODE_ONESHOT:

		break;

	case CLOCK_EVT_MODE_UNUSED:

	case CLOCK_EVT_MODE_SHUTDOWN:

	case CLOCK_EVT_MODE_RESUME:

		break;

static int tegra_timer_shutdown(struct clock_event_device *evt)

{

	timer_shutdown(evt);

	return 0;

}



static int tegra_timer_set_periodic(struct clock_event_device *evt)

{

	u32 reg = 0xC0000000 | ((1000000 / HZ) - 1);



	timer_shutdown(evt);

	timer_writel(reg, TIMER3_BASE + TIMER_PTV);

	return 0;

}



static struct clock_event_device tegra_clockevent = {

	.name			= "timer0",

	.rating			= 300,

	.features	= CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,

	.features		= CLOCK_EVT_FEAT_ONESHOT |

				  CLOCK_EVT_FEAT_PERIODIC,

	.set_next_event		= tegra_timer_set_next_event,

	.set_mode	= tegra_timer_set_mode,

	.set_state_shutdown	= tegra_timer_shutdown,

	.set_state_periodic	= tegra_timer_set_periodic,

	.set_state_oneshot	= tegra_timer_shutdown,

	.tick_resume		= tegra_timer_shutdown,

};



static u64 notrace tegra_read_sched_clock(void)

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