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ARM: 6977/1: pmu: add platform_device_id table support 

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@arm.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Mark Rutland 2011-06-22 15:34:56 +01:00 committed by Russell King
parent e73c34c3d5
commit e4b6381009
1 changed files with 18 additions and 2 deletions
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20
arch/arm/kernel/pmu.c
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@ -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)