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authorSuzuki K Poulose <suzuki.poulose@arm.com>2016-02-23 10:49:49 +0000
committerWill Deacon <will.deacon@arm.com>2016-02-29 23:23:16 +0000
commit1ce6311b99fe809530e8e2181bb73855f85041d1 (patch)
tree029718ba5c147ce074a42a96a03fbcbf0b28ca85 /drivers/bus/arm-cci.c
parentc8bc2b11405652792a9348c8de7d46637b459b4e (diff)
downloadlinux-1ce6311b99fe809530e8e2181bb73855f85041d1.tar.bz2
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.c6
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);