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arm: pmu: allow platform specific irq enable/disable handling

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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>
This commit is contained in:
Ming Lei
2011-03-02 15:00:08 +08:00
committed by Will Deacon
parent 14eec97ff4
commit e0516a64e7
2 changed files with 20 additions and 5 deletions
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10
arch/arm/kernel/perf_event.c
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@@ -380,6 +380,8 @@ armpmu_release_hardware(struct arm_pmu *armpmu)
{
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 @@ armpmu_release_hardware(struct arm_pmu *armpmu)
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 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
irq);
armpmu_release_hardware(armpmu);
return err;
}
} else if (plat && plat->enable_irq)
plat->enable_irq(irq);
cpumask_set_cpu(i, &armpmu->active_irqs);
}