MIPS: cevt-ds1287: Migrate to new 'set-state' interface

Migrate cevt-ds1287 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.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10603/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/cevt-ds1287.c

@@ -59,27 +59,32 @@ static int ds1287_set_next_event(unsigned long delta,
 	return -EINVAL;
 }
 
-static void ds1287_set_mode(enum clock_event_mode mode,
-			    struct clock_event_device *evt)
+static int ds1287_shutdown(struct clock_event_device *evt)
 {
 	u8 val;
 
 	spin_lock(&rtc_lock);
 
 	val = CMOS_READ(RTC_REG_B);
-
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		val |= RTC_PIE;
-		break;
-	default:
 	val &= ~RTC_PIE;
-		break;
-	}
+	CMOS_WRITE(val, RTC_REG_B);
+
+	spin_unlock(&rtc_lock);
+	return 0;
+}
+
+static int ds1287_set_periodic(struct clock_event_device *evt)
+{
+	u8 val;
 
+	spin_lock(&rtc_lock);
+
+	val = CMOS_READ(RTC_REG_B);
+	val |= RTC_PIE;
 	CMOS_WRITE(val, RTC_REG_B);
 
 	spin_unlock(&rtc_lock);
+	return 0;
 }
 
 static void ds1287_event_handler(struct clock_event_device *dev)
@@ -90,7 +95,9 @@ static struct clock_event_device ds1287_clockevent = {
 	.name			= "ds1287",
 	.features		= CLOCK_EVT_FEAT_PERIODIC,
 	.set_next_event		= ds1287_set_next_event,
-	.set_mode	= ds1287_set_mode,
+	.set_state_shutdown	= ds1287_shutdown,
+	.set_state_periodic	= ds1287_set_periodic,
+	.tick_resume		= ds1287_shutdown,
 	.event_handler		= ds1287_event_handler,
 };