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device property: Add support for fwnode endpoints

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Similar to OF endpoints, endpoint type nodes can be also supported on
ACPI. In order to make it possible for drivers to ignore the matter,
add a type for fwnode_endpoint and a function to parse them.

On ACPI, find the child node index instead of relying on the "endpoint"
property.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sakari Ailus 2017-03-28 10:52:25 +03:00 • committed by Rafael J. Wysocki
parent e44bb0cbdc
commit 2bd5452d46
3 changed files with 47 additions and 0 deletions
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12
include/linux/fwnode.h
View file

@ -27,4 +27,16 @@ struct fwnode_handle {
struct fwnode_handle *secondary;
};
/**
* struct fwnode_endpoint - Fwnode graph endpoint
* @port: Port number
* @id: Endpoint id
* @local_fwnode: reference to the related fwnode
*/
struct fwnode_endpoint {
unsigned int port;
unsigned int id;
const struct fwnode_handle *local_fwnode;
};
#endif