From 1ce6311b99fe809530e8e2181bb73855f85041d1 Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Tue, 23 Feb 2016 10:49:49 +0000 Subject: [PATCH] arm-cci: Get the status of a counter Add helper routines to check if the counter is enabled or not. Cc: Punit Agrawal Acked-by: Olof Johansson Acked-by: Mark Rutland Signed-off-by: Suzuki K Poulose Signed-off-by: Will Deacon --- 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 420c30c15419..d28903712eb8 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); -- 2.30.2