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Groups > linux.kernel > #1316519

[PATCH v6 06/12] arm-cci: Get the status of a counter

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Add helper routines to check if the counter is enabled or not.

Cc: Punit Agrawal <punit.agrawal@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
---
 drivers/bus/arm-cci.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 4710d51..f8f6a17 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);
-- 
1.7.9.5

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[PATCH v6 00/12] arm-cci: PMU driver updates "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100
  [PATCH v6 03/12] arm-cci: Refactor CCI PMU enable/disable methods "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100
  [PATCH v6 11/12] arm-cci500: Rearrange PMU driver for code sharing with CCI-550 PMU "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100
  [PATCH v6 05/12] arm-cci: write_counter: Remove redundant check "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100
  [PATCH v6 01/12] arm-cci: simplify sysfs attr handling "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100
  [PATCH v6 06/12] arm-cci: Get the status of a counter "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100
  [PATCH v6 07/12] arm-cci: Add routines to save/restore all counters "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100
  [PATCH v6 10/12] arm-cci: CCI-500: Work around PMU counter writes "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2016-01-25 12:30 +0100

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