Add device-tree support to the SMMUv3 PMCG driver.
Signed-off-by: Jay Chen <jkc...@linux.alibaba.com>
Signed-off-by: Jean-Philippe Brucker <jean-phili...@linaro.org>
Signed-off-by: Robin Murphy <robin.mur...@arm.com>
---
drivers/perf/arm_smmuv3_pmu.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c
index 226348822ab3..19697617153a 100644
--- a/drivers/perf/arm_smmuv3_pmu.c
+++ b/drivers/perf/arm_smmuv3_pmu.c
@@ -47,6 +47,7 @@
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/msi.h>
+#include <linux/of.h>
#include <linux/perf_event.h>
#include <linux/platform_device.h>
#include <linux/smp.h>
@@ -834,7 +835,8 @@ static int smmu_pmu_probe(struct platform_device *pdev)
return -EINVAL;
}
- smmu_pmu_get_acpi_options(smmu_pmu);
+ if (!dev->of_node)
+ smmu_pmu_get_acpi_options(smmu_pmu);
/* Pick one CPU to be the preferred one to use */
smmu_pmu->on_cpu = raw_smp_processor_id();
@@ -884,9 +886,16 @@ static void smmu_pmu_shutdown(struct platform_device *pdev)
smmu_pmu_disable(&smmu_pmu->pmu);
}
+static const struct of_device_id smmu_pmu_of_match[] = {
+ { .compatible = "arm,smmu-v3-pmcg" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, smmu_pmu_of_match);
+
static struct platform_driver smmu_pmu_driver = {
.driver = {
.name = "arm-smmu-v3-pmcg",
+ .of_match_table = of_match_ptr(smmu_pmu_of_match),
.suppress_bind_attrs = true,
},
.probe = smmu_pmu_probe,
--
2.33.1
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