device property: Introduce firmware node type for platform data

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Introduce data structures and code allowing "built-in" properties
to be associated with devices in such a way that they will be used
by the device_property_* API if no proper firmware node (neither DT
nor ACPI) is present for the given device.

Each property is to be represented by a property_entry structure.
An array of property_entry structures (terminated with a null
entry) can be pointed to by the properties field of struct
property_set that can be added as a firmware node to a struct
device using device_add_property_set().  That will cause the
device_property_* API to use that property_set as the source
of properties if the given device does not have a DT node or
an ACPI companion device object associated with it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Rafael J. Wysocki 2015-04-03 16:05:11 +02:00

parent 97badf873a

commit 16ba08d5c9

3 changed files with 127 additions and 5 deletions

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98

drivers/base/property.c

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1

include/linux/fwnode.h

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33

include/linux/property.h

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