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c6x/timer64: Migrate to new 'set-state' interface

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Migrate c6x 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(RESUME) and so tick_resume()
isn't implemented.

Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: linux-c6x-dev@linux-c6x.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 16:56:17 +05:30 committed by Daniel Lezcano
parent 067f96218c
commit 677e6fe063
1 changed files with 27 additions and 25 deletions
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52
arch/c6x/platforms/timer64.c
View file

@ -126,35 +126,37 @@ static int next_event(unsigned long delta,
return 0;
}
static void set_clock_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static int set_periodic(struct clock_event_device *evt)
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
timer64_enable();
timer64_mode = TIMER64_MODE_PERIODIC;
timer64_config(TIMER64_RATE / HZ);
break;
case CLOCK_EVT_MODE_ONESHOT:
timer64_enable();
timer64_mode = TIMER64_MODE_ONE_SHOT;
break;
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
timer64_mode = TIMER64_MODE_DISABLED;
timer64_disable();
break;
case CLOCK_EVT_MODE_RESUME:
break;
}
timer64_enable();
timer64_mode = TIMER64_MODE_PERIODIC;
timer64_config(TIMER64_RATE / HZ);
return 0;
}
static int set_oneshot(struct clock_event_device *evt)
{
timer64_enable();
timer64_mode = TIMER64_MODE_ONE_SHOT;
return 0;
}
static int shutdown(struct clock_event_device *evt)
{
timer64_mode = TIMER64_MODE_DISABLED;
timer64_disable();
return 0;
}
static struct clock_event_device t64_clockevent_device = {
.name = "TIMER64_EVT32_TIMER",
.features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
.rating = 200,
.set_mode = set_clock_mode,
.set_next_event = next_event,
.name = "TIMER64_EVT32_TIMER",
.features = CLOCK_EVT_FEAT_ONESHOT |
CLOCK_EVT_FEAT_PERIODIC,
.rating = 200,
.set_state_shutdown = shutdown,
.set_state_periodic = set_periodic,
.set_state_oneshot = set_oneshot,
.set_next_event = next_event,
};
static irqreturn_t timer_interrupt(int irq, void *dev_id)