Commit 8e8af4cd authored by Viresh Kumar's avatar Viresh Kumar Committed by Daniel Lezcano
Browse files

clockevents/drivers/stm32: Migrate to new 'set-state' interface 



Migrate stm32 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: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: default avatarMaxime Coquelin <mcoquelin.stm32@gmail.com>
Acked-by: default avatarMaxime Coquelin <mcoquelin.stm32@gmail.com>
parent 53cba064

drivers/clocksource/timer-stm32.c

+17 −13
Original line number Diff line number Diff line
@@ -40,24 +40,25 @@ struct stm32_clock_event_ddata { 
	void __iomem *base;

};



static void stm32_clock_event_set_mode(enum clock_event_mode mode,

				       struct clock_event_device *evtdev)

static int stm32_clock_event_shutdown(struct clock_event_device *evtdev)

{

	struct stm32_clock_event_ddata *data =

		container_of(evtdev, struct stm32_clock_event_ddata, evtdev);

	void *base = data->base;



	switch (mode) {

	case CLOCK_EVT_MODE_PERIODIC:

		writel_relaxed(data->periodic_top, base + TIM_ARR);

		writel_relaxed(TIM_CR1_ARPE | TIM_CR1_CEN, base + TIM_CR1);

		break;



	case CLOCK_EVT_MODE_ONESHOT:

	default:

	writel_relaxed(0, base + TIM_CR1);

		break;

	return 0;

}



static int stm32_clock_event_set_periodic(struct clock_event_device *evtdev)

{

	struct stm32_clock_event_ddata *data =

		container_of(evtdev, struct stm32_clock_event_ddata, evtdev);

	void *base = data->base;



	writel_relaxed(data->periodic_top, base + TIM_ARR);

	writel_relaxed(TIM_CR1_ARPE | TIM_CR1_CEN, base + TIM_CR1);

	return 0;

}



static int stm32_clock_event_set_next_event(unsigned long evt,
@@ -88,7 +89,10 @@ static struct stm32_clock_event_ddata clock_event_ddata = { 
	.evtdev = {

		.name = "stm32 clockevent",

		.features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,

		.set_mode = stm32_clock_event_set_mode,

		.set_state_shutdown = stm32_clock_event_shutdown,

		.set_state_periodic = stm32_clock_event_set_periodic,

		.set_state_oneshot = stm32_clock_event_shutdown,

		.tick_resume = stm32_clock_event_shutdown,

		.set_next_event = stm32_clock_event_set_next_event,

		.rating = 200,

	},

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