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ARM/davinci/time: Migrate to new 'set-state' interface

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Migrate davinci 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: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Viresh Kumar 2015-02-27 13:39:52 +05:30
parent 9bdc2e0c9a
commit bc660a454f
1 changed files with 30 additions and 24 deletions
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54
arch/arm/mach-davinci/time.c
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@ -303,36 +303,42 @@ static int davinci_set_next_event(unsigned long cycles,
return 0;
}
static void davinci_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static int davinci_shutdown(struct clock_event_device *evt)
{
struct timer_s *t = &timers[TID_CLOCKEVENT];
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
t->period = davinci_clock_tick_rate / (HZ);
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_PERIODIC;
timer32_config(t);
break;
case CLOCK_EVT_MODE_ONESHOT:
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_ONESHOT;
break;
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_DISABLED;
break;
case CLOCK_EVT_MODE_RESUME:
break;
}
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_DISABLED;
return 0;
}
static int davinci_set_oneshot(struct clock_event_device *evt)
{
struct timer_s *t = &timers[TID_CLOCKEVENT];
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_ONESHOT;
return 0;
}
static int davinci_set_periodic(struct clock_event_device *evt)
{
struct timer_s *t = &timers[TID_CLOCKEVENT];
t->period = davinci_clock_tick_rate / (HZ);
t->opts &= ~TIMER_OPTS_STATE_MASK;
t->opts |= TIMER_OPTS_PERIODIC;
timer32_config(t);
return 0;
}
static struct clock_event_device clockevent_davinci = {
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_next_event = davinci_set_next_event,
.set_mode = davinci_set_mode,
.features = CLOCK_EVT_FEAT_PERIODIC |
CLOCK_EVT_FEAT_ONESHOT,
.set_next_event = davinci_set_next_event,
.set_state_shutdown = davinci_shutdown,
.set_state_periodic = davinci_set_periodic,
.set_state_oneshot = davinci_set_oneshot,
};