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

Migrate qcom 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.

Periodic mode isn't supported by the driver and so the callback isn't
provided anymore.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Andy Gross <agross@codeaurora.org>
Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Viresh Kumar 2015-06-18 16:24:31 +05:30 committed by Daniel Lezcano
parent 47d490ea15
commit 736b2df2ab
1 changed files with 7 additions and 17 deletions
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24
drivers/clocksource/qcom-timer.c
View File

@ -47,7 +47,7 @@ static irqreturn_t msm_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = dev_id;
/* Stop the timer tick */
if (evt->mode == CLOCK_EVT_MODE_ONESHOT) {
if (clockevent_state_oneshot(evt)) {
u32 ctrl = readl_relaxed(event_base + TIMER_ENABLE);
ctrl &= ~TIMER_ENABLE_EN;
writel_relaxed(ctrl, event_base + TIMER_ENABLE);
@ -75,26 +75,14 @@ static int msm_timer_set_next_event(unsigned long cycles,
return 0;
}
static void msm_timer_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
static int msm_timer_shutdown(struct clock_event_device *evt)
{
u32 ctrl;
ctrl = readl_relaxed(event_base + TIMER_ENABLE);
ctrl &= ~(TIMER_ENABLE_EN | TIMER_ENABLE_CLR_ON_MATCH_EN);
switch (mode) {
case CLOCK_EVT_MODE_RESUME:
case CLOCK_EVT_MODE_PERIODIC:
break;
case CLOCK_EVT_MODE_ONESHOT:
/* Timer is enabled in set_next_event */
break;
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
break;
}
writel_relaxed(ctrl, event_base + TIMER_ENABLE);
return 0;
}
static struct clock_event_device __percpu *msm_evt;
@ -126,7 +114,9 @@ static int msm_local_timer_setup(struct clock_event_device *evt)
evt->name = "msm_timer";
evt->features = CLOCK_EVT_FEAT_ONESHOT;
evt->rating = 200;
evt->set_mode = msm_timer_set_mode;
evt->set_state_shutdown = msm_timer_shutdown;
evt->set_state_oneshot = msm_timer_shutdown;
evt->tick_resume = msm_timer_shutdown;
evt->set_next_event = msm_timer_set_next_event;
evt->cpumask = cpumask_of(cpu);
@ -147,7 +137,7 @@ static int msm_local_timer_setup(struct clock_event_device *evt)
static void msm_local_timer_stop(struct clock_event_device *evt)
{
evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
evt->set_state_shutdown(evt);
disable_percpu_irq(evt->irq);
}