mirror of https://gitee.com/openkylin/linux.git
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: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -2559,6 +2559,18 @@ struct device_node *of_graph_get_remote_port(const struct device_node *node)
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}
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EXPORT_SYMBOL(of_graph_get_remote_port);
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int of_graph_get_endpoint_count(const struct device_node *np)
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{
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struct device_node *endpoint;
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int num = 0;
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for_each_endpoint_of_node(np, endpoint)
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num++;
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return num;
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}
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EXPORT_SYMBOL(of_graph_get_endpoint_count);
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/**
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* of_graph_get_remote_node() - get remote parent device_node for given port/endpoint
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* @node: pointer to parent device_node containing graph port/endpoint
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@ -43,6 +43,7 @@ struct of_endpoint {
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#ifdef CONFIG_OF
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int of_graph_parse_endpoint(const struct device_node *node,
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struct of_endpoint *endpoint);
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int of_graph_get_endpoint_count(const struct device_node *np);
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struct device_node *of_graph_get_port_by_id(struct device_node *node, u32 id);
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struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
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struct device_node *previous);
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@ -64,6 +65,11 @@ static inline int of_graph_parse_endpoint(const struct device_node *node,
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return -ENOSYS;
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}
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static inline int of_graph_get_endpoint_count(const struct device_node *np)
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{
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return 0;
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}
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static inline struct device_node *of_graph_get_port_by_id(
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struct device_node *node, u32 id)
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{
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