Commit 9552a6af authored by Viresh Kumar's avatar Viresh Kumar Committed by Daniel Lezcano
Browse files

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



Migrate vf_pit 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: Jingchang Lu <b35083@freescale.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: default avatarStefan Agner <stefan@agner.ch>
parent 8ff8fc13

drivers/clocksource/vf_pit_timer.c

+12 −15
Original line number Diff line number Diff line
@@ -86,20 +86,16 @@ static int pit_set_next_event(unsigned long delta, 
	return 0;

}



static void pit_set_mode(enum clock_event_mode mode,

				struct clock_event_device *evt)

static int pit_shutdown(struct clock_event_device *evt)

{

	switch (mode) {

	case CLOCK_EVT_MODE_PERIODIC:

		pit_set_next_event(cycle_per_jiffy, evt);

		break;

	case CLOCK_EVT_MODE_SHUTDOWN:

	case CLOCK_EVT_MODE_UNUSED:

	pit_timer_disable();

		break;

	default:

		break;

	return 0;

}



static int pit_set_periodic(struct clock_event_device *evt)

{

	pit_set_next_event(cycle_per_jiffy, evt);

	return 0;

}



static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
@@ -114,7 +110,7 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id) 
	 * and start the counter again. So software need to disable the timer

	 * to stop the counter loop in ONESHOT mode.

	 */

	if (likely(evt->mode == CLOCK_EVT_MODE_ONESHOT))

	if (likely(clockevent_state_oneshot(evt)))

		pit_timer_disable();



	evt->event_handler(evt);
@@ -125,7 +121,8 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id) 
static struct clock_event_device clockevent_pit = {

	.name		= "VF pit timer",

	.features	= CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,

	.set_mode	= pit_set_mode,

	.set_state_shutdown = pit_shutdown,

	.set_state_periodic = pit_set_periodic,

	.set_next_event	= pit_set_next_event,

	.rating		= 300,

};

CRA Git | Maintained and supported by SUSTech CRA and CCSE