[PATCH v2 2/3] perf/smmuv3: Add devicetree support
From: Jean-Philippe Brucker <hidden>
Date: 2021-11-17 14:52:45
Also in:
linux-arm-kernel, linux-iommu
Subsystem:
arm pmu profiling and debugging, the rest · Maintainers:
Will Deacon, Mark Rutland, Linus Torvalds
Add device-tree support to the SMMUv3 PMCG driver. Signed-off-by: Jay Chen <redacted> Signed-off-by: Jean-Philippe Brucker <redacted> Signed-off-by: Robin Murphy <robin.murphy@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