leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

clockevents/drivers/efm32: Migrate to new 'set-state' interface

Browse Source 
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>
This commit is contained in:
Viresh Kumar 2015-06-18 16:24:41 +05:30 committed by Daniel Lezcano
parent d96f4412bc
commit 20bf54f117
1 changed files with 32 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
drivers/clocksource/time-efm32.c
View File

@ -48,40 +48,42 @@ struct efm32_clock_event_ddata {
unsigned periodic_top; unsigned periodic_top;
}; };
static void efm32_clock_event_set_mode(enum clock_event_mode mode, static int efm32_clock_event_shutdown(struct clock_event_device *evtdev)
struct clock_event_device *evtdev)
{ {
struct efm32_clock_event_ddata *ddata = struct efm32_clock_event_ddata *ddata =
container_of(evtdev, struct efm32_clock_event_ddata, evtdev); container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
switch (mode) { writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
case CLOCK_EVT_MODE_PERIODIC: return 0;
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: static int efm32_clock_event_set_oneshot(struct clock_event_device *evtdev)
writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD); {
writel_relaxed(TIMERn_CTRL_PRESC_1024 | struct efm32_clock_event_ddata *ddata =
TIMERn_CTRL_CLKSEL_PRESCHFPERCLK | container_of(evtdev, struct efm32_clock_event_ddata, evtdev);
TIMERn_CTRL_OSMEN |
TIMERn_CTRL_MODE_DOWN,
ddata->base + TIMERn_CTRL);
break;
case CLOCK_EVT_MODE_UNUSED: writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD);
case CLOCK_EVT_MODE_SHUTDOWN: writel_relaxed(TIMERn_CTRL_PRESC_1024 |
writel_relaxed(TIMERn_CMD_STOP, ddata->base + TIMERn_CMD); TIMERn_CTRL_CLKSEL_PRESCHFPERCLK |
break; TIMERn_CTRL_OSMEN |
TIMERn_CTRL_MODE_DOWN,
ddata->base + TIMERn_CTRL);
return 0;
}
case CLOCK_EVT_MODE_RESUME: static int efm32_clock_event_set_periodic(struct clock_event_device *evtdev)
break; {
} 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, 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 = { .evtdev = {
.name = "efm32 clockevent", .name = "efm32 clockevent",
.features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC, .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, .set_next_event = efm32_clock_event_set_next_event,
.rating = 200, .rating = 200,
}, },