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Subject[PATCHv3 2/5] arm-cci: Get the status of a counter
Date
Add helper routines to get the counter status and the event
programmed on it.

Cc: Punit Agrawal <punit.agrawal@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
---
Changes since V2:
- Rename pmu_counter_get_ctrl => pmu_counter_is_enabled()
---
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 f5793b9..48936c8 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -652,11 +652,23 @@ 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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