Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6a71d8d7 authored by Kieran Bingham's avatar Kieran Bingham Committed by Rafael J. Wysocki
Browse files

device property: Add fwnode_graph_get_port_parent 



Provide a helper to obtain the parent device fwnode without first
parsing the remote-endpoint as per fwnode_graph_get_remote_port_parent.

Signed-off-by: default avatarKieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 125ee6b3

drivers/base/property.c

+24 −4
Original line number Diff line number Diff line
@@ -1170,6 +1170,26 @@ fwnode_graph_get_next_endpoint(struct fwnode_handle *fwnode, 
}

EXPORT_SYMBOL_GPL(fwnode_graph_get_next_endpoint);



/**

 * fwnode_graph_get_port_parent - Return the device fwnode of a port endpoint

 * @endpoint: Endpoint firmware node of the port

 *

 * Return: the firmware node of the device the @endpoint belongs to.

 */

struct fwnode_handle *

fwnode_graph_get_port_parent(struct fwnode_handle *endpoint)

{

	struct fwnode_handle *port, *parent;



	port = fwnode_get_parent(endpoint);

	parent = fwnode_call_ptr_op(port, graph_get_port_parent);



	fwnode_handle_put(port);



	return parent;

}

EXPORT_SYMBOL_GPL(fwnode_graph_get_port_parent);



/**

 * fwnode_graph_get_remote_port_parent - Return fwnode of a remote device

 * @fwnode: Endpoint firmware node pointing to the remote endpoint
@@ -1179,12 +1199,12 @@ EXPORT_SYMBOL_GPL(fwnode_graph_get_next_endpoint); 
struct fwnode_handle *

fwnode_graph_get_remote_port_parent(struct fwnode_handle *fwnode)

{

	struct fwnode_handle *port, *parent;

	struct fwnode_handle *endpoint, *parent;



	port = fwnode_graph_get_remote_port(fwnode);

	parent = fwnode_call_ptr_op(port, graph_get_port_parent);

	endpoint = fwnode_graph_get_remote_endpoint(fwnode);

	parent = fwnode_graph_get_port_parent(endpoint);



	fwnode_handle_put(port);

	fwnode_handle_put(endpoint);



	return parent;

}

include/linux/property.h

+2 −0
Original line number Diff line number Diff line
@@ -275,6 +275,8 @@ void *device_get_mac_address(struct device *dev, char *addr, int alen); 


struct fwnode_handle *fwnode_graph_get_next_endpoint(

	struct fwnode_handle *fwnode, struct fwnode_handle *prev);

struct fwnode_handle *

fwnode_graph_get_port_parent(struct fwnode_handle *fwnode);

struct fwnode_handle *fwnode_graph_get_remote_port_parent(

	struct fwnode_handle *fwnode);

struct fwnode_handle *fwnode_graph_get_remote_port(