[PATCH 35/74] clockevents/drivers/efm32: Migrate to new 'set-state' interface
From: Daniel Lezcano <hidden>
Date: 2015-08-10 10:05:59
Also in:
lkml
Subsystem:
clocksource, clockevent drivers, the rest · Maintainers:
Daniel Lezcano, Thomas Gleixner, Linus Torvalds
From: Viresh Kumar <viresh.kumar@linaro.org> 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-K?nig <kernel@pengutronix.de> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <redacted> --- drivers/clocksource/time-efm32.c | 66 +++++++++++++++++++++------------------- 1 file 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, },
--
1.9.1