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Commit 37a13e78 authored by Viresh Kumar's avatar Viresh Kumar Committed by Daniel Lezcano
Browse files

powerpc/time: Migrate to new 'set-state' interface 



Migrate powerpc 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.

We weren't doing anything in ->set_mode(ONSHOT) and so
set_state_oneshot() isn't implemented.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 00c5a0ac

arch/powerpc/kernel/time.c

+12 −12
Original line number Diff line number Diff line
@@ -99,16 +99,17 @@ static struct clocksource clocksource_timebase = { 


static int decrementer_set_next_event(unsigned long evt,

				      struct clock_event_device *dev);

static void decrementer_set_mode(enum clock_event_mode mode,

				 struct clock_event_device *dev);

static int decrementer_shutdown(struct clock_event_device *evt);



struct clock_event_device decrementer_clockevent = {

	.name			= "decrementer",

	.rating			= 200,

	.irq			= 0,

	.set_next_event		= decrementer_set_next_event,

	.set_mode       = decrementer_set_mode,

	.features       = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_C3STOP,

	.set_state_shutdown	= decrementer_shutdown,

	.tick_resume		= decrementer_shutdown,

	.features		= CLOCK_EVT_FEAT_ONESHOT |

				  CLOCK_EVT_FEAT_C3STOP,

};

EXPORT_SYMBOL(decrementer_clockevent);
@@ -862,11 +863,10 @@ static int decrementer_set_next_event(unsigned long evt, 
	return 0;

}



static void decrementer_set_mode(enum clock_event_mode mode,

				 struct clock_event_device *dev)

static int decrementer_shutdown(struct clock_event_device *dev)

{

	if (mode != CLOCK_EVT_MODE_ONESHOT)

	decrementer_set_next_event(DECREMENTER_MAX, dev);

	return 0;

}



/* Interrupt handler for the timer broadcast IPI */