diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2014-06-10 13:52:25 +0530 |
|---|---|---|
| committer | Gary S. Robertson <gary.robertson@linaro.org> | 2015-01-19 19:14:01 -0600 |
| commit | bfe18c296e7616de35986511d680149524e82088 (patch) | |
| tree | 057f4d2bce0ab92aafc0286f12bcfe088f8ef3c4 /arch/microblaze | |
| parent | b9992eec5682ff1db079b5d09844c603b33526de (diff) | |
clockevents: misc: add support for ONESHOT_STOPPED mode
Clockevent devices can be stopped from core (hrtimers/tick) when they aren't
used anymore. This will mostly happen on a idle or tickless cpu. This is done to
avoid getting spurious interrupts when core doesn't want to handle them anymore.
For stopping clockevent devices, core requests drivers to switch to a special
optional mode: CLOCK_EVT_MODE_ONESHOT_STOPPED. At this time platforms can also
save some power by disabling these devices.
This patch adds support for handling CLOCK_EVT_MODE_ONESHOT_STOPPED mode for all
architectures that have single clockevent driver (to limit patch count).
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Santosh Shukla <santosh.shukla@linaro.org>
Diffstat (limited to 'arch/microblaze')
| -rw-r--r-- | arch/microblaze/kernel/timer.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c index 35a512f67be2..44a8a0bad0ac 100644 --- a/arch/microblaze/kernel/timer.c +++ b/arch/microblaze/kernel/timer.c @@ -109,6 +109,10 @@ static int xilinx_timer_set_mode(enum clock_event_mode mode, case CLOCK_EVT_MODE_ONESHOT: pr_info("%s: oneshot\n", __func__); break; + case CLOCK_EVT_MODE_ONESHOT_STOPPED: + pr_info("%s: oneshot stopped\n", __func__); + xilinx_timer0_stop(); + break; case CLOCK_EVT_MODE_UNUSED: pr_info("%s: unused\n", __func__); break; |