Add helper routines to get the counter status and the event programmed on it.
Cc: Punit Agrawal <[email protected]> Cc: Mark Rutland <[email protected]> Signed-off-by: Suzuki K. Poulose <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
