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Message-Id: <1456224595-3282-8-git-send-email-suzuki.poulose@arm.com>
Date: Tue, 23 Feb 2016 10:49:49 +0000
From: Suzuki K Poulose <suzuki.poulose@....com>
To: linux-arm-kernel@...ts.infradead.org
Cc: arm@...nel.org, arnd@...db.de, olof@...om.net,
punit.agrawal@....com, mark.rutland@....com, will.deacon@....com,
linux-kernel@...r.kernel.org,
Suzuki K Poulose <suzuki.poulose@....com>
Subject: [PATCH 07/13] 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@....com>
Acked-by: Mark Rutland <mark.rutland@....com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....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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