ARM: 8054/1: perf: add support for the Cortex-A17 PMU

The Cortex-A17 PMU is identical to that of the A12, so wire up a new
compatible string to the existing event structures.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 14 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/pmu.txt b/Documentation/devicetree/bindings/arm/pmu.txt
index fe5cef8976cb..75ef91d08f3b 100644
--- a/Documentation/devicetree/bindings/arm/pmu.txt
+++ b/Documentation/devicetree/bindings/arm/pmu.txt
@@ -8,6 +8,7 @@ Required properties:
 
 - compatible : should be one of
         "arm,armv8-pmuv3"
+        "arm,cortex-a17-pmu"
         "arm,cortex-a15-pmu"
         "arm,cortex-a12-pmu"
         "arm,cortex-a9-pmu"
diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c
index 51798d7854ac..a71ae1523620 100644
--- a/arch/arm/kernel/perf_event_cpu.c
+++ b/arch/arm/kernel/perf_event_cpu.c
@@ -221,6 +221,7 @@ static struct notifier_block cpu_pmu_hotplug_notifier = {
  * PMU platform driver and devicetree bindings.
  */
 static struct of_device_id cpu_pmu_of_device_ids[] = {
+        {.compatible = "arm,cortex-a17-pmu",    .data = armv7_a17_pmu_init},
         {.compatible = "arm,cortex-a15-pmu",    .data = armv7_a15_pmu_init},
         {.compatible = "arm,cortex-a12-pmu",    .data = armv7_a12_pmu_init},
         {.compatible = "arm,cortex-a9-pmu",     .data = armv7_a9_pmu_init},
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index f4ef3981ed02..2037f7205987 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -1599,6 +1599,13 @@ static int armv7_a12_pmu_init(struct arm_pmu *cpu_pmu)
         return 0;
 }
 
+static int armv7_a17_pmu_init(struct arm_pmu *cpu_pmu)
+{
+        armv7_a12_pmu_init(cpu_pmu);
+        cpu_pmu->name = "ARMv7 Cortex-A17";
+        return 0;
+}
+
 /*
  * Krait Performance Monitor Region Event Selection Register (PMRESRn)
  *
@@ -2021,6 +2028,11 @@ static inline int armv7_a12_pmu_init(struct arm_pmu *cpu_pmu)
         return -ENODEV;
 }
 
+static inline int armv7_a17_pmu_init(struct arm_pmu *cpu_pmu)
+{
+        return -ENODEV;
+}
+
 static inline int krait_pmu_init(struct arm_pmu *cpu_pmu)
 {
         return -ENODEV;