arm: pmu: allow platform specific irq enable/disable handling
This patch introduces .enable_irq and .disable_irq into
struct arm_pmu_platdata, so platform specific irq enablement
can be handled after request_irq, and platform specific irq
disablement can be handled before free_irq.
This patch is for support of pmu irq routed from CTI on omap4.
Acked-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index c475379..daa1db8 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -380,6 +380,8 @@
{
int i, irq, irqs;
struct platform_device *pmu_device = armpmu->plat_device;
+ struct arm_pmu_platdata *plat =
+ dev_get_platdata(&pmu_device->dev);
irqs = min(pmu_device->num_resources, num_possible_cpus());
@@ -387,8 +389,11 @@
if (!cpumask_test_and_clear_cpu(i, &armpmu->active_irqs))
continue;
irq = platform_get_irq(pmu_device, i);
- if (irq >= 0)
+ if (irq >= 0) {
+ if (plat && plat->disable_irq)
+ plat->disable_irq(irq);
free_irq(irq, armpmu);
+ }
}
release_pmu(armpmu->type);
@@ -448,7 +453,8 @@
irq);
armpmu_release_hardware(armpmu);
return err;
- }
+ } else if (plat && plat->enable_irq)
+ plat->enable_irq(irq);
cpumask_set_cpu(i, &armpmu->active_irqs);
}