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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: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Viresh Kumar 2015-07-16 16:56:25 +05:30 committed by Daniel Lezcano
parent 00c5a0acd1
commit 37a13e78e0
1 changed files with 12 additions and 12 deletions
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24
arch/powerpc/kernel/time.c
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@ -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,
.name = "decrementer",
.rating = 200,
.irq = 0,
.set_next_event = decrementer_set_next_event,
.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);
decrementer_set_next_event(DECREMENTER_MAX, dev);
return 0;
}
/* Interrupt handler for the timer broadcast IPI */