From mboxrd@z Thu Jan 1 00:00:00 1970 From: suzuki.poulose@arm.com (Suzuki K. Poulose) Date: Mon, 4 Jan 2016 11:54:45 +0000 Subject: [PATCH v5 06/11] arm-cci: Get the status of a counter In-Reply-To: <1451908490-2615-1-git-send-email-suzuki.poulose@arm.com> References: <1451908490-2615-1-git-send-email-suzuki.poulose@arm.com> Message-ID: <1451908490-2615-7-git-send-email-suzuki.poulose@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add helper routines to check if the counter is enabled or not. Cc: Punit Agrawal Acked-by: Mark Rutland Signed-off-by: Suzuki K. Poulose --- 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 c768ee4..a3938ef 100644 --- a/drivers/bus/arm-cci.c +++ b/drivers/bus/arm-cci.c @@ -660,6 +660,12 @@ 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