clockevents/drivers/stm32: Migrate to new 'set-state' interface

Migrate stm32 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: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Acked-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>

diff --git a/drivers/clocksource/timer-stm32.c b/drivers/clocksource/timer-stm32.c
index a97e8b50701cf964698bd9571f33c004c9f13665..f3dcb76799b4e419e9dd72f21d25e73d7554dbfc 100644 (file)
--- a/drivers/clocksource/timer-stm32.c
+++ b/drivers/clocksource/timer-stm32.c
@@ -40,24 +40,25 @@ struct stm32_clock_event_ddata {
        void __iomem *base;
 };
 
-static void stm32_clock_event_set_mode(enum clock_event_mode mode,
-                                      struct clock_event_device *evtdev)
+static int stm32_clock_event_shutdown(struct clock_event_device *evtdev)
 {
        struct stm32_clock_event_ddata *data =
                container_of(evtdev, struct stm32_clock_event_ddata, evtdev);
        void *base = data->base;
 
-       switch (mode) {
-       case CLOCK_EVT_MODE_PERIODIC:
-               writel_relaxed(data->periodic_top, base + TIM_ARR);
-               writel_relaxed(TIM_CR1_ARPE | TIM_CR1_CEN, base + TIM_CR1);
-               break;
+       writel_relaxed(0, base + TIM_CR1);
+       return 0;
+}
 
-       case CLOCK_EVT_MODE_ONESHOT:
-       default:
-               writel_relaxed(0, base + TIM_CR1);
-               break;
-       }
+static int stm32_clock_event_set_periodic(struct clock_event_device *evtdev)
+{
+       struct stm32_clock_event_ddata *data =
+               container_of(evtdev, struct stm32_clock_event_ddata, evtdev);
+       void *base = data->base;
+
+       writel_relaxed(data->periodic_top, base + TIM_ARR);
+       writel_relaxed(TIM_CR1_ARPE | TIM_CR1_CEN, base + TIM_CR1);
+       return 0;
 }
 
 static int stm32_clock_event_set_next_event(unsigned long evt,
@@ -88,7 +89,10 @@ static struct stm32_clock_event_ddata clock_event_ddata = {
        .evtdev = {
                .name = "stm32 clockevent",
                .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
-               .set_mode = stm32_clock_event_set_mode,
+               .set_state_shutdown = stm32_clock_event_shutdown,
+               .set_state_periodic = stm32_clock_event_set_periodic,
+               .set_state_oneshot = stm32_clock_event_shutdown,
+               .tick_resume = stm32_clock_event_shutdown,
                .set_next_event = stm32_clock_event_set_next_event,
                .rating = 200,
        },