MIPS: sni: Migrate to new 'set-state' interface

Migrate sni 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/10612/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/sni/time.c

@@ -14,11 +14,8 @@
 #define SNI_COUNTER2_DIV	64
 #define SNI_COUNTER0_DIV	((SNI_CLOCK_TICK_RATE / SNI_COUNTER2_DIV) / HZ)
 
-static void a20r_set_mode(enum clock_event_mode mode,
-			  struct clock_event_device *evt)
+static int a20r_set_periodic(struct clock_event_device *evt)
 {
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
 	*(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0x34;
 	wmb();
 	*(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = SNI_COUNTER0_DIV;
@@ -32,15 +29,7 @@ static void a20r_set_mode(enum clock_event_mode mode,
 	wmb();
 	*(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = SNI_COUNTER2_DIV >> 8;
 	wmb();
-
-		break;
-	case CLOCK_EVT_MODE_ONESHOT:
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		break;
-	case CLOCK_EVT_MODE_RESUME:
-		break;
-	}
+	return 0;
 }
 
 static struct clock_event_device a20r_clockevent_device = {
@@ -51,7 +40,7 @@ static struct clock_event_device a20r_clockevent_device = {
 
 	.rating			= 300,
 	.irq			= SNI_A20R_IRQ_TIMER,
-	.set_mode	= a20r_set_mode,
+	.set_state_periodic	= a20r_set_periodic,
 };
 
 static irqreturn_t a20r_interrupt(int irq, void *dev_id)