Messages in this thread Patch in this message | | | From | Stefan Agner <> | Subject | [PATCH v2 1/3] clocksource: vf_pit_timer: Support shutdown mode | Date | Wed, 24 Sep 2014 18:20:08 +0200 |
| |
In order to avoid waking up the system in a low power mode, the clocksource should not generate interrupts anymore. Disable the PIT timer interrupt when changing into the CLOCK_EVT_MODE_SHUTDOWN mode.
Signed-off-by: Stefan Agner <stefan@agner.ch> --- drivers/clocksource/vf_pit_timer.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/clocksource/vf_pit_timer.c b/drivers/clocksource/vf_pit_timer.c index a918bc4..eb354b4 100644 --- a/drivers/clocksource/vf_pit_timer.c +++ b/drivers/clocksource/vf_pit_timer.c @@ -89,10 +89,15 @@ static int pit_set_next_event(unsigned long delta, static void pit_set_mode(enum clock_event_mode mode, 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; } -- 2.1.0
| |