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

Migrate samsung_pwm 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: Tomasz Figa <tfiga@chromium.org>
Cc: Kukjin Kim <kgene@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

diff --git a/drivers/clocksource/samsung_pwm_timer.c b/drivers/clocksource/samsung_pwm_timer.c
index 5645cfc90c415ecd6108291304610e683579962f..bc90e13338cc6e961d3d3e4c4bdc611c2dd05436 100644 (file)
--- a/drivers/clocksource/samsung_pwm_timer.c
+++ b/drivers/clocksource/samsung_pwm_timer.c
@@ -207,25 +207,18 @@ static int samsung_set_next_event(unsigned long cycles,
        return 0;
 }
 
-static void samsung_set_mode(enum clock_event_mode mode,
-                               struct clock_event_device *evt)
+static int samsung_shutdown(struct clock_event_device *evt)
 {
        samsung_time_stop(pwm.event_id);
+       return 0;
+}
 
-       switch (mode) {
-       case CLOCK_EVT_MODE_PERIODIC:
-               samsung_time_setup(pwm.event_id, pwm.clock_count_per_tick - 1);
-               samsung_time_start(pwm.event_id, true);
-               break;
-
-       case CLOCK_EVT_MODE_ONESHOT:
-               break;
-
-       case CLOCK_EVT_MODE_UNUSED:
-       case CLOCK_EVT_MODE_SHUTDOWN:
-       case CLOCK_EVT_MODE_RESUME:
-               break;
-       }
+static int samsung_set_periodic(struct clock_event_device *evt)
+{
+       samsung_time_stop(pwm.event_id);
+       samsung_time_setup(pwm.event_id, pwm.clock_count_per_tick - 1);
+       samsung_time_start(pwm.event_id, true);
+       return 0;
 }
 
 static void samsung_clockevent_resume(struct clock_event_device *cev)
@@ -240,12 +233,16 @@ static void samsung_clockevent_resume(struct clock_event_device *cev)
 }
 
 static struct clock_event_device time_event_device = {
-       .name           = "samsung_event_timer",
-       .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-       .rating         = 200,
-       .set_next_event = samsung_set_next_event,
-       .set_mode       = samsung_set_mode,
-       .resume         = samsung_clockevent_resume,
+       .name                   = "samsung_event_timer",
+       .features               = CLOCK_EVT_FEAT_PERIODIC |
+                                 CLOCK_EVT_FEAT_ONESHOT,
+       .rating                 = 200,
+       .set_next_event         = samsung_set_next_event,
+       .set_state_shutdown     = samsung_shutdown,
+       .set_state_periodic     = samsung_set_periodic,
+       .set_state_oneshot      = samsung_shutdown,
+       .tick_resume            = samsung_shutdown,
+       .resume                 = samsung_clockevent_resume,
 };
 
 static irqreturn_t samsung_clock_event_isr(int irq, void *dev_id)