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Groups > linux.kernel > #1294100

[PATCH v4 07/12] arm-cci: Get the status of a counter

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Add helper routines to get the counter status and the event
programmed on it.

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 |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index e2824a7..7f77f65 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -662,11 +662,23 @@ 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);
 }
 
+static u32 __maybe_unused
+pmu_get_event(struct cci_pmu *cci_pmu, int idx)
+{
+	return pmu_read_register(cci_pmu, idx, CCI_PMU_EVT_SEL);
+}
+
 /*
  * Returns the number of programmable counters actually implemented
  * by the cci
-- 
1.7.9.5

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Thread

[PATCHv4 00/12] arm-cci: PMU updates "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 18:50 +0100
  [PATCH v4 09/12] arm-cci: Provide hook for writing to PMU counters "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 18:50 +0100
  [PATCH v4 08/12] arm-cci: Add routines to save/restore all counters "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 18:50 +0100
  [PATCH v4 11/12] arm-cci500: Rearrange PMU driver for code sharing with CCI-550 PMU "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 18:50 +0100
  [PATCH v4 10/12] arm-cci: CCI-500: Work around PMU counter writes "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
  [PATCH v4 02/12] arm-cci: Refactor pmu_write_counter "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
  [PATCH v4 01/12] arm-cci: Define CCI counter period "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
  [PATCH v4 06/12] arm-cci: Refactor CCI PMU enable/disable methods "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
  [PATCH v4 05/12] arm-cci: PMU: Add support for transactions "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
    Re: [PATCH v4 05/12] arm-cci: PMU: Add support for transactions Peter Zijlstra <peterz@infradead.org> - 2015-12-17 19:50 +0100
      Re: [PATCH v4 05/12] arm-cci: PMU: Add support for transactions "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2015-12-18 11:30 +0100
        Re: [PATCH v4 05/12] arm-cci: PMU: Add support for transactions Peter Zijlstra <peterz@infradead.org> - 2015-12-18 11:50 +0100
          Re: [PATCH v4 05/12] arm-cci: PMU: Add support for transactions "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2015-12-18 12:00 +0100
            Re: [PATCH v4 05/12] arm-cci: PMU: Add support for transactions Peter Zijlstra <peterz@infradead.org> - 2015-12-18 12:50 +0100
  [PATCH v4 07/12] arm-cci: Get the status of a counter "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
  [PATCH v4 03/12] arm-cci: Group writes to counter "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
  [PATCH v4 04/12] arm-cci: Fix the flags for pmu_start called from pmu_add "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100
  [PATCH v4 12/12] arm-cci: CoreLink CCI-550 PMU driver "Suzuki K. Poulose" <suzuki.poulose@arm.com> - 2015-12-17 19:00 +0100

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