From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: Tue, 23 Feb 2016 10:49:49 +0000 (+0000)
Subject: arm-cci: Get the status of a counter
X-Git-Tag: v4.6-rc1~62^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1ce6311b99fe809530e8e2181bb73855f85041d1;p=platform%2Fkernel%2Flinux-exynos.git

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@arm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

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);