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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-05-21 10:03:45 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-06-02 14:40:47 +0200 |
| commit | 3434d23b694e5cb6e44e966914563406c31c4053 (patch) | |
| tree | e382aa8d0a8603cc708650bc00336975632e220b | |
| parent | clockevents: Do not suspend/resume if unused (diff) | |
| download | linux-3434d23b694e5cb6e44e966914563406c31c4053.tar.xz linux-3434d23b694e5cb6e44e966914563406c31c4053.zip | |
clockevents: Add helpers to check the state of a clockevent device
Some clockevent drivers, once migrated to use per-state callbacks,
need to check the state of the clockevent device in their callbacks or
interrupt handler.
Add accessor functions clockevent_state_*() to get this information.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linaro-kernel@lists.linaro.org
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/04a717d490335c688dd7af899fbcede97e1bb8ee.1432192527.git.viresh.kumar@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/clockchips.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index 271fa4c8eb29..64214ad85af9 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -149,6 +149,32 @@ struct clock_event_device { struct module *owner; } ____cacheline_aligned; +/* Helpers to verify state of a clockevent device */ +static inline bool clockevent_state_detached(struct clock_event_device *dev) +{ + return dev->state == CLOCK_EVT_STATE_DETACHED; +} + +static inline bool clockevent_state_shutdown(struct clock_event_device *dev) +{ + return dev->state == CLOCK_EVT_STATE_SHUTDOWN; +} + +static inline bool clockevent_state_periodic(struct clock_event_device *dev) +{ + return dev->state == CLOCK_EVT_STATE_PERIODIC; +} + +static inline bool clockevent_state_oneshot(struct clock_event_device *dev) +{ + return dev->state == CLOCK_EVT_STATE_ONESHOT; +} + +static inline bool clockevent_state_oneshot_stopped(struct clock_event_device *dev) +{ + return dev->state == CLOCK_EVT_STATE_ONESHOT_STOPPED; +} + /* * Calculate a multiplication factor for scaled math, which is used to convert * nanoseconds based values to clock ticks: |