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Groups > linux.kernel > #1340536

[PATCH 07/13] 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 420c30c..d289037 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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Thread

[PATCH 00/13] arm-cci: PMU driver updates for 4.6 Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  [PATCH 05/13] arm-cci: Delay PMU counter writes to pmu::pmu_enable Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  [PATCH 07/13] arm-cci: Get the status of a counter Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  [PATCH 03/13] arm-cci: Group writes to counter Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  [PATCH 06/13] arm-cci: write_counter: Remove redundant check Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  [PATCH 09/13] arm-cci: Add helper to enable PMU without synchornising counters Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  [PATCH 08/13] arm-cci: Add routines to save/restore all counters Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  [PATCH 11/13] arm-cci: CCI-500: Work around PMU counter writes Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-02-23 12:00 +0100
  Re: [PATCH 00/13] arm-cci: PMU driver updates for 4.6 Will Deacon <will.deacon@arm.com> - 2016-02-23 12:50 +0100
    Re: [PATCH 00/13] arm-cci: PMU driver updates for 4.6 "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2016-02-23 15:00 +0100
      Re: [PATCH 00/13] arm-cci: PMU driver updates for 4.6 Olof Johansson <olof@lixom.net> - 2016-02-24 18:00 +0100
        Re: [PATCH 00/13] arm-cci: PMU driver updates for 4.6 Will Deacon <will.deacon@arm.com> - 2016-02-24 18:20 +0100
          Re: [PATCH 00/13] arm-cci: PMU driver updates for 4.6 Olof Johansson <olof@lixom.net> - 2016-02-24 19:50 +0100
            Re: [PATCH 00/13] arm-cci: PMU driver updates for 4.6 Will Deacon <will.deacon@arm.com> - 2016-02-26 17:50 +0100

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