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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: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Stefan Agner <stefan@agner.ch>
This commit is contained in:
Viresh Kumar 2015-06-18 16:24:53 +05:30 committed by Daniel Lezcano
parent 8ff8fc13bd
commit 9552a6af8c
1 changed files with 12 additions and 15 deletions
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27
drivers/clocksource/vf_pit_timer.c
View File

@ -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;
}
pit_timer_disable();
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,
};