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

Migrate moxart 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: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/clocksource/moxart_timer.c

@@ -58,25 +58,24 @@
 static void __iomem *base;
 static unsigned int clock_count_per_tick;
 
-static void moxart_clkevt_mode(enum clock_event_mode mode,
-			       struct clock_event_device *clk)
+static int moxart_shutdown(struct clock_event_device *evt)
+{
+	writel(TIMER1_DISABLE, base + TIMER_CR);
+	return 0;
+}
+
+static int moxart_set_oneshot(struct clock_event_device *evt)
 {
-	switch (mode) {
-	case CLOCK_EVT_MODE_RESUME:
-	case CLOCK_EVT_MODE_ONESHOT:
 	writel(TIMER1_DISABLE, base + TIMER_CR);
 	writel(~0, base + TIMER1_BASE + REG_LOAD);
-		break;
-	case CLOCK_EVT_MODE_PERIODIC:
+	return 0;
+}
+
+static int moxart_set_periodic(struct clock_event_device *evt)
+{
 	writel(clock_count_per_tick, base + TIMER1_BASE + REG_LOAD);
 	writel(TIMER1_ENABLE, base + TIMER_CR);
-		break;
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-	default:
-		writel(TIMER1_DISABLE, base + TIMER_CR);
-		break;
-	}
+	return 0;
 }
 
 static int moxart_clkevt_next_event(unsigned long cycles,
@@ -97,8 +96,12 @@ static int moxart_clkevt_next_event(unsigned long cycles,
 static struct clock_event_device moxart_clockevent = {
 	.name			= "moxart_timer",
 	.rating			= 200,
-	.features	= CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-	.set_mode	= moxart_clkevt_mode,
+	.features		= CLOCK_EVT_FEAT_PERIODIC |
+				  CLOCK_EVT_FEAT_ONESHOT,
+	.set_state_shutdown	= moxart_shutdown,
+	.set_state_periodic	= moxart_set_periodic,
+	.set_state_oneshot	= moxart_set_oneshot,
+	.tick_resume		= moxart_set_oneshot,
 	.set_next_event		= moxart_clkevt_next_event,
 };