ARM/omap1/timer32: Migrate to new 'set-state' interface

Migrate omap timer32 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.

Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

arch/arm/mach-omap1/timer32k.c

@@ -114,29 +114,28 @@ static int omap_32k_timer_set_next_event(unsigned long delta,
 	return 0;
 }
 
-static void omap_32k_timer_set_mode(enum clock_event_mode mode,
-				    struct clock_event_device *evt)
+static int omap_32k_timer_shutdown(struct clock_event_device *evt)
 {
 	omap_32k_timer_stop();
+	return 0;
+}
 
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		omap_32k_timer_start(OMAP_32K_TIMER_TICK_PERIOD);
-		break;
-	case CLOCK_EVT_MODE_ONESHOT:
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		break;
-	case CLOCK_EVT_MODE_RESUME:
-		break;
-	}
+static int omap_32k_timer_set_periodic(struct clock_event_device *evt)
+{
+	omap_32k_timer_stop();
+	omap_32k_timer_start(OMAP_32K_TIMER_TICK_PERIOD);
+	return 0;
 }
 
 static struct clock_event_device clockevent_32k_timer = {
-	.name		= "32k-timer",
-	.features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-	.set_next_event	= omap_32k_timer_set_next_event,
-	.set_mode	= omap_32k_timer_set_mode,
+	.name			= "32k-timer",
+	.features		= CLOCK_EVT_FEAT_PERIODIC |
+				  CLOCK_EVT_FEAT_ONESHOT,
+	.set_next_event		= omap_32k_timer_set_next_event,
+	.set_state_shutdown	= omap_32k_timer_shutdown,
+	.set_state_periodic	= omap_32k_timer_set_periodic,
+	.set_state_oneshot	= omap_32k_timer_shutdown,
+	.tick_resume		= omap_32k_timer_shutdown,
 };
 
 static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id)