[PATCHv2 4/4] ARM: pmu: add platform_device_id table support
Mark Rutland
mark.rutland at arm.com
Wed Jun 15 10:40:04 EDT 2011
This patch adds support for platform_device_id tables, allowing new
PMU types to be registered with the correct type, without requiring
new platform_driver shims to provide the type. An single entry for
existing devices is provided.
Macros matching functionality of the of_device_id table macros are
provided for convenience.
Signed-off-by: Mark Rutland <mark.rutland at arm.com>
Acked-by: Jamie Iles <jamie at jamieiles.com>
Cc: Rob Herring <rob.herring at calxeda.com>
Cc: Will Deacon <will.deacon at arm.com>
---
arch/arm/kernel/pmu.c | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/arch/arm/kernel/pmu.c b/arch/arm/kernel/pmu.c
index 2ce00be..2b70709 100644
--- a/arch/arm/kernel/pmu.c
+++ b/arch/arm/kernel/pmu.c
@@ -61,9 +61,22 @@ static struct of_device_id armpmu_of_device_ids[] = {
{},
};
+#define PLAT_MATCH_PMU(_name, _type) { \
+ .name = _name, \
+ .driver_data = _type, \
+}
+
+#define PLAT_MATCH_CPU(_name) PLAT_MATCH_PMU(_name, ARM_PMU_DEVICE_CPU)
+
+static struct platform_device_id armpmu_plat_device_ids[] = {
+ PLAT_MATCH_CPU("arm-pmu"),
+ {},
+};
+
enum arm_pmu_type armpmu_device_type(struct platform_device *pdev)
{
const struct of_device_id *of_id;
+ const struct platform_device_id *pdev_id;
/* provided by of_device_id table */
if (pdev->dev.of_node) {
@@ -72,8 +85,10 @@ enum arm_pmu_type armpmu_device_type(struct platform_device *pdev)
return (enum arm_pmu_type)of_id->data;
}
- /* Provided by a 'legacy' platform_device */
- return ARM_PMU_DEVICE_CPU;
+ /* Provided by platform_device_id table */
+ pdev_id = platform_get_device_id(pdev);
+ BUG_ON(!pdev_id);
+ return pdev_id->driver_data;
}
static int __devinit armpmu_device_probe(struct platform_device *pdev)
@@ -87,6 +102,7 @@ static struct platform_driver armpmu_driver = {
.of_match_table = armpmu_of_device_ids,
},
.probe = armpmu_device_probe,
+ .id_table = armpmu_plat_device_ids,
};
static int __init register_pmu_driver(void)
--
1.7.0.4
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