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clockevents/drivers/cs5535: Migrate to new 'set-state' interface

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Migrate cs5535 driver to the new 'set-state' interface provided by
the 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.

Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Andres Salomon <dilinger@queued.net>
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 2015-06-12 13:30:16 +05:30 committed by Daniel Lezcano
parent b4cf5d710f
commit 8f9327cbb6
1 changed files with 14 additions and 10 deletions
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22
drivers/clocksource/cs5535-clockevt.c
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@ -42,7 +42,6 @@ MODULE_PARM_DESC(irq, "Which IRQ to use for the clock source MFGPT ticks.");
* 256 128 .125 512.000
*/
static unsigned int cs5535_tick_mode = CLOCK_EVT_MODE_SHUTDOWN;
static struct cs5535_mfgpt_timer *cs5535_event_clock;
/* Selected from the table above */
@ -77,15 +76,17 @@ static void start_timer(struct cs5535_mfgpt_timer *timer, uint16_t delta)
MFGPT_SETUP_CNTEN | MFGPT_SETUP_CMP2);
}
static void mfgpt_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static int mfgpt_shutdown(struct clock_event_device *evt)
{
disable_timer(cs5535_event_clock);
return 0;
}
if (mode == CLOCK_EVT_MODE_PERIODIC)
static int mfgpt_set_periodic(struct clock_event_device *evt)
{
disable_timer(cs5535_event_clock);
start_timer(cs5535_event_clock, MFGPT_PERIODIC);
cs5535_tick_mode = mode;
return 0;
}
static int mfgpt_next_event(unsigned long delta, struct clock_event_device *evt)
@ -97,7 +98,10 @@ static int mfgpt_next_event(unsigned long delta, struct clock_event_device *evt)
static struct clock_event_device cs5535_clockevent = {
.name = DRV_NAME,
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_mode = mfgpt_set_mode,
.set_state_shutdown = mfgpt_shutdown,
.set_state_periodic = mfgpt_set_periodic,
.set_state_oneshot = mfgpt_shutdown,
.tick_resume = mfgpt_shutdown,
.set_next_event = mfgpt_next_event,
.rating = 250,
};
@ -113,7 +117,7 @@ static irqreturn_t mfgpt_tick(int irq, void *dev_id)
/* Turn off the clock (and clear the event) */
disable_timer(cs5535_event_clock);
if (cs5535_tick_mode == CLOCK_EVT_MODE_SHUTDOWN)
if (clockevent_state_shutdown(&cs5535_clockevent))
return IRQ_HANDLED;
/* Clear the counter */
@ -121,7 +125,7 @@ static irqreturn_t mfgpt_tick(int irq, void *dev_id)
/* Restart the clock in periodic mode */
if (cs5535_tick_mode == CLOCK_EVT_MODE_PERIODIC)
if (clockevent_state_periodic(&cs5535_clockevent))
cs5535_mfgpt_write(cs5535_event_clock, MFGPT_REG_SETUP,
MFGPT_SETUP_CNTEN | MFGPT_SETUP_CMP2);