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

Migrate vf_pit 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: Jingchang Lu <b35083@freescale.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Stefan Agner <stefan@agner.ch>

diff --git a/drivers/clocksource/vf_pit_timer.c b/drivers/clocksource/vf_pit_timer.c
index b45ac6229b57137d11898ede5ce11f7ec7c69439..f07ba99321716c02628affeafca70100642a1df2 100644 (file)
--- a/drivers/clocksource/vf_pit_timer.c
+++ b/drivers/clocksource/vf_pit_timer.c
@@ -86,20 +86,16 @@ static int pit_set_next_event(unsigned long delta,
        return 0;
 }
 
-static void pit_set_mode(enum clock_event_mode mode,
-                               struct clock_event_device *evt)
+static int pit_shutdown(struct clock_event_device *evt)
 {
-       switch (mode) {
-       case CLOCK_EVT_MODE_PERIODIC:
-               pit_set_next_event(cycle_per_jiffy, evt);
-               break;
-       case CLOCK_EVT_MODE_SHUTDOWN:
-       case CLOCK_EVT_MODE_UNUSED:
-               pit_timer_disable();
-               break;
-       default:
-               break;
-       }
+       pit_timer_disable();
+       return 0;
+}
+
+static int pit_set_periodic(struct clock_event_device *evt)
+{
+       pit_set_next_event(cycle_per_jiffy, evt);
+       return 0;
 }
 
 static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
@@ -114,7 +110,7 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
         * and start the counter again. So software need to disable the timer
         * to stop the counter loop in ONESHOT mode.
         */
-       if (likely(evt->mode == CLOCK_EVT_MODE_ONESHOT))
+       if (likely(clockevent_state_oneshot(evt)))
                pit_timer_disable();
 
        evt->event_handler(evt);
@@ -125,7 +121,8 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
 static struct clock_event_device clockevent_pit = {
        .name           = "VF pit timer",
        .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-       .set_mode       = pit_set_mode,
+       .set_state_shutdown = pit_shutdown,
+       .set_state_periodic = pit_set_periodic,
        .set_next_event = pit_set_next_event,
        .rating         = 300,
 };