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| author |   Suzuki K Poulose <suzuki.poulose@arm.com> | 2016-02-23 10:49:49 +0000 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2016-02-29 23:23:16 +0000 |
| commit | 1ce6311b99fe809530e8e2181bb73855f85041d1 (patch) | |
| tree | 029718ba5c147ce074a42a96a03fbcbf0b28ca85 /drivers/bus/arm-cci.c | |
| parent | arm-cci: write_counter: Remove redundant check (diff) | |
| download | linux-dev-1ce6311b99fe809530e8e2181bb73855f85041d1.tar.xz linux-dev-1ce6311b99fe809530e8e2181bb73855f85041d1.zip | |
arm-cci: Get the status of a counter
Add helper routines to check if the counter is enabled or not.
Cc: Punit Agrawal <punit.agrawal@arm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/bus/arm-cci.c')
| -rw-r--r-- | drivers/bus/arm-cci.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c index 420c30c15419..d28903712eb8 100644 --- a/drivers/bus/arm-cci.c +++ b/drivers/bus/arm-cci.c @@ -707,6 +707,12 @@ static void pmu_enable_counter(struct cci_pmu *cci_pmu, int idx) pmu_write_register(cci_pmu, 1, idx, CCI_PMU_CNTR_CTRL); } +static bool __maybe_unused +pmu_counter_is_enabled(struct cci_pmu *cci_pmu, int idx) +{ + return (pmu_read_register(cci_pmu, idx, CCI_PMU_CNTR_CTRL) & 0x1) != 0; +} + static void pmu_set_event(struct cci_pmu *cci_pmu, int idx, unsigned long event) { pmu_write_register(cci_pmu, event, idx, CCI_PMU_EVT_SEL); |