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authorViresh Kumar <viresh.kumar@linaro.org>2015-06-18 12:54:53 +0200
committerDaniel Lezcano <daniel.lezcano@linaro.org>2015-08-10 11:40:50 +0200
commit9552a6af8c807ab547c053399b40bd05781fa0a8 (patch)
treedb03ba564afd9078b21e067c52eee0faeb1e25db /drivers/clocksource
parentclockevents/drivers/u300: Migrate to new 'set-state' interface (diff)
downloadlinux-9552a6af8c807ab547c053399b40bd05781fa0a8.tar.xz
linux-9552a6af8c807ab547c053399b40bd05781fa0a8.zip
clockevents/drivers/vf_pit: Migrate to new 'set-state' interface
Migrate vf_pit 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: Jingchang Lu <b35083@freescale.com> Cc: Stefan Agner <stefan@agner.ch> Cc: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Stefan Agner <stefan@agner.ch>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/vf_pit_timer.c27
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/clocksource/vf_pit_timer.c b/drivers/clocksource/vf_pit_timer.c
index b45ac6229b57..f07ba9932171 100644
--- a/drivers/clocksource/vf_pit_timer.c
+++ b/drivers/clocksource/vf_pit_timer.c
@@ -86,20 +86,16 @@ static int pit_set_next_event(unsigned long delta,
return 0;
}
-static void pit_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
+static int pit_shutdown(struct clock_event_device *evt)
{
- switch (mode) {
- case CLOCK_EVT_MODE_PERIODIC:
- pit_set_next_event(cycle_per_jiffy, evt);
- break;
- case CLOCK_EVT_MODE_SHUTDOWN:
- case CLOCK_EVT_MODE_UNUSED:
- pit_timer_disable();
- break;
- default:
- break;
- }
+ pit_timer_disable();
+ return 0;
+}
+
+static int pit_set_periodic(struct clock_event_device *evt)
+{
+ pit_set_next_event(cycle_per_jiffy, evt);
+ return 0;
}
static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
@@ -114,7 +110,7 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
* and start the counter again. So software need to disable the timer
* to stop the counter loop in ONESHOT mode.
*/
- if (likely(evt->mode == CLOCK_EVT_MODE_ONESHOT))
+ if (likely(clockevent_state_oneshot(evt)))
pit_timer_disable();
evt->event_handler(evt);
@@ -125,7 +121,8 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
static struct clock_event_device clockevent_pit = {
.name = "VF pit timer",
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
- .set_mode = pit_set_mode,
+ .set_state_shutdown = pit_shutdown,
+ .set_state_periodic = pit_set_periodic,
.set_next_event = pit_set_next_event,
.rating = 300,
};