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Commit ee890596 authored by Philipp Zabel's avatar Philipp Zabel
Browse files

of: Add for_each_endpoint_of_node helper macro 



Note that while of_graph_get_next_endpoint decrements the reference count
of the child node passed to it, of_node_put(child) still has to be called
manually when breaking out of the loop.

Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
parent f033c0bc

include/linux/of_graph.h

+11 −0
Original line number Diff line number Diff line
@@ -26,6 +26,17 @@ struct of_endpoint { 
	const struct device_node *local_node;

};



/**

 * for_each_endpoint_of_node - iterate over every endpoint in a device node

 * @parent: parent device node containing ports and endpoints

 * @child: loop variable pointing to the current endpoint node

 *

 * When breaking out of the loop, of_node_put(child) has to be called manually.

 */

#define for_each_endpoint_of_node(parent, child) \

	for (child = of_graph_get_next_endpoint(parent, NULL); child != NULL; \

	     child = of_graph_get_next_endpoint(parent, child))



#ifdef CONFIG_OF

int of_graph_parse_endpoint(const struct device_node *node,

				struct of_endpoint *endpoint);