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

Migrate fsl_ftm 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: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

diff --git a/drivers/clocksource/fsl_ftm_timer.c b/drivers/clocksource/fsl_ftm_timer.c
index 454227d4f895296a04414fe60d966d9b232f60a9..ef434699c80a090ee1bbb0de41b38170bddc188b 100644 (file)
--- a/drivers/clocksource/fsl_ftm_timer.c
+++ b/drivers/clocksource/fsl_ftm_timer.c
@@ -153,19 +153,16 @@ static int ftm_set_next_event(unsigned long delta,
        return 0;
 }
 
-static void ftm_set_mode(enum clock_event_mode mode,
-                               struct clock_event_device *evt)
+static int ftm_set_oneshot(struct clock_event_device *evt)
 {
-       switch (mode) {
-       case CLOCK_EVT_MODE_PERIODIC:
-               ftm_set_next_event(priv->periodic_cyc, evt);
-               break;
-       case CLOCK_EVT_MODE_ONESHOT:
-               ftm_counter_disable(priv->clkevt_base);
-               break;
-       default:
-               return;
-       }
+       ftm_counter_disable(priv->clkevt_base);
+       return 0;
+}
+
+static int ftm_set_periodic(struct clock_event_device *evt)
+{
+       ftm_set_next_event(priv->periodic_cyc, evt);
+       return 0;
 }
 
 static irqreturn_t ftm_evt_interrupt(int irq, void *dev_id)
@@ -174,7 +171,7 @@ static irqreturn_t ftm_evt_interrupt(int irq, void *dev_id)
 
        ftm_irq_acknowledge(priv->clkevt_base);
 
-       if (likely(evt->mode == CLOCK_EVT_MODE_ONESHOT)) {
+       if (likely(clockevent_state_oneshot(evt))) {
                ftm_irq_disable(priv->clkevt_base);
                ftm_counter_disable(priv->clkevt_base);
        }
@@ -185,11 +182,13 @@ static irqreturn_t ftm_evt_interrupt(int irq, void *dev_id)
 }
 
 static struct clock_event_device ftm_clockevent = {
-       .name           = "Freescale ftm timer",
-       .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-       .set_mode       = ftm_set_mode,
-       .set_next_event = ftm_set_next_event,
-       .rating         = 300,
+       .name                   = "Freescale ftm timer",
+       .features               = CLOCK_EVT_FEAT_PERIODIC |
+                                 CLOCK_EVT_FEAT_ONESHOT,
+       .set_state_periodic     = ftm_set_periodic,
+       .set_state_oneshot      = ftm_set_oneshot,
+       .set_next_event         = ftm_set_next_event,
+       .rating                 = 300,
 };
 
 static struct irqaction ftm_timer_irq = {