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Commit ac1e6958 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
Browse files

of_graph: add of_graph_get_endpoint_count() 



OF graph want to count its endpoint number, same as
of_get_child_count(). This patch adds of_graph_get_endpoint_count()

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0ef472a9

drivers/of/base.c

+12 −0
Original line number Diff line number Diff line
@@ -2559,6 +2559,18 @@ struct device_node *of_graph_get_remote_port(const struct device_node *node) 
}

EXPORT_SYMBOL(of_graph_get_remote_port);



int of_graph_get_endpoint_count(const struct device_node *np)

{

	struct device_node *endpoint;

	int num = 0;



	for_each_endpoint_of_node(np, endpoint)

		num++;



	return num;

}

EXPORT_SYMBOL(of_graph_get_endpoint_count);



/**

 * of_graph_get_remote_node() - get remote parent device_node for given port/endpoint

 * @node: pointer to parent device_node containing graph port/endpoint

include/linux/of_graph.h

+6 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ struct of_endpoint { 
#ifdef CONFIG_OF

int of_graph_parse_endpoint(const struct device_node *node,

				struct of_endpoint *endpoint);

int of_graph_get_endpoint_count(const struct device_node *np);

struct device_node *of_graph_get_port_by_id(struct device_node *node, u32 id);

struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,

					struct device_node *previous);
@@ -64,6 +65,11 @@ static inline int of_graph_parse_endpoint(const struct device_node *node, 
	return -ENOSYS;

}



static inline int of_graph_get_endpoint_count(const struct device_node *np)

{

	return 0;

}



static inline struct device_node *of_graph_get_port_by_id(

					struct device_node *node, u32 id)

{