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 <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

Documentation/devicetree/bindings/arm/pmu.txt

···
 
 - compatible : should be one of
 	"arm,armv8-pmuv3"
+	"arm,cortex-a17-pmu"
 	"arm,cortex-a15-pmu"
 	"arm,cortex-a12-pmu"
 	"arm,cortex-a9-pmu"

arch/arm/kernel/perf_event_cpu.c

···
  * 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},

arch/arm/kernel/perf_event_v7.c

···
 	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)
  *
···
 }
 
 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;
 }