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authorViresh Kumar <viresh.kumar@linaro.org>2015-06-18 16:24:41 +0530
committerDaniel Lezcano <daniel.lezcano@linaro.org>2015-08-10 11:40:42 +0200
commit20bf54f1172931df634d8f8cf05ba2c2d371dc10 (patch)
treee4e8b4f82df5c6f7fc27ab726c679cbfdf71b450 /drivers/clocksource
parentd96f4412bcbd6698b6241146f01021dabdf052f3 (diff)
downloadop-kernel-dev-20bf54f1172931df634d8f8cf05ba2c2d371dc10.zip
op-kernel-dev-20bf54f1172931df634d8f8cf05ba2c2d371dc10.tar.gz
clockevents/drivers/efm32: Migrate to new 'set-state' interface
Migrate efm32 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. There is nothing to be done for resume state and so isn't implemented. Cc: Uwe Kleine-König <kernel@pengutronix.de> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/time-efm32.c66
1 files changed, 35 insertions, 31 deletions
diff --git a/drivers/clocksource/time-efm32.c b/drivers/clocksource/time-efm32.c
index 5b6e3d5..b06e4c2 100644
--- a/drivers/clocksource/time-efm32.c
+++ b/drivers/clocksource/time-efm32.c
@@ -48,40 +48,42 @@ struct efm32_clock_event_ddata {
unsigned periodic_top;
};
-static void efm32_clock_event_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evtdev)
+static int efm32_clock_event_shutdown(struct clock_event_device *evtdev)
{
struct efm32_clock_event_ddata *ddata =
container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
- switch (mode) {
- case CLOCK_EVT_MODE_PERIODIC:
- writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
- writel_relaxed(ddata->periodic_top, ddata->base + TIMERn_TOP);
- writel_relaxed(TIMERn_CTRL_PRESC_1024 |
- TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
- TIMERn_CTRL_MODE_DOWN,
- ddata->base + TIMERn_CTRL);
- writel_relaxed(TIMERn_CMD_START, ddata->base + TIMERn_CMD);
- break;
-
- case CLOCK_EVT_MODE_ONESHOT:
- writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
- writel_relaxed(TIMERn_CTRL_PRESC_1024 |
- TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
- TIMERn_CTRL_OSMEN |
- TIMERn_CTRL_MODE_DOWN,
- ddata->base + TIMERn_CTRL);
- break;
-
- case CLOCK_EVT_MODE_UNUSED:
- case CLOCK_EVT_MODE_SHUTDOWN:
- writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
- break;
-
- case CLOCK_EVT_MODE_RESUME:
- break;
- }
+ writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
+ return 0;
+}
+
+static int efm32_clock_event_set_oneshot(struct clock_event_device *evtdev)
+{
+ struct efm32_clock_event_ddata *ddata =
+ container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
+
+ writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
+ writel_relaxed(TIMERn_CTRL_PRESC_1024 |
+ TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
+ TIMERn_CTRL_OSMEN |
+ TIMERn_CTRL_MODE_DOWN,
+ ddata->base + TIMERn_CTRL);
+ return 0;
+}
+
+static int efm32_clock_event_set_periodic(struct clock_event_device *evtdev)
+{
+ struct efm32_clock_event_ddata *ddata =
+ container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
+
+ writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
+ writel_relaxed(ddata->periodic_top, ddata->base + TIMERn_TOP);
+ writel_relaxed(TIMERn_CTRL_PRESC_1024 |
+ TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
+ TIMERn_CTRL_MODE_DOWN,
+ ddata->base + TIMERn_CTRL);
+ writel_relaxed(TIMERn_CMD_START, ddata->base + TIMERn_CMD);
+ return 0;
}
static int efm32_clock_event_set_next_event(unsigned long evt,
@@ -112,7 +114,9 @@ static struct efm32_clock_event_ddata clock_event_ddata = {
.evtdev = {
.name = "efm32 clockevent",
.features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
- .set_mode = efm32_clock_event_set_mode,
+ .set_state_shutdown = efm32_clock_event_shutdown,
+ .set_state_periodic = efm32_clock_event_set_periodic,
+ .set_state_oneshot = efm32_clock_event_set_oneshot,
.set_next_event = efm32_clock_event_set_next_event,
.rating = 200,
},
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