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clocksource: Add new feature flag CLOCK_SOURCE_SUSPEND_NONSTOP 

Some x86 processors have a TSC clocksource, which continues to run
even when system is suspended. Also most OMAP platforms have a
32 KHz timer which has similar capability. Add a feature flag so that
it could be utilized.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
hifive-unleashed-5.1
Feng Tang 2013-03-12 11:56:46 +08:00 committed by John Stultz
parent c54fdbb282
commit 5caf463625
1 changed files with 1 additions and 0 deletions
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include/linux/clocksource.h
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@ -206,6 +206,7 @@ struct clocksource {
#define CLOCK_SOURCE_WATCHDOG 0x10
#define CLOCK_SOURCE_VALID_FOR_HRES 0x20
#define CLOCK_SOURCE_UNSTABLE 0x40
#define CLOCK_SOURCE_SUSPEND_NONSTOP 0x80
/* simplify initialization of mask field */
#define CLOCKSOURCE_MASK(bits) (cycle_t)((bits) < 64 ? ((1ULL<<(bits))-1) : -1)