From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
OF graph want to count its endpoint number, same as of_get_child_count(). This patch adds of_graph_get_endpoint_count() which can check specific type. It will count all endpoint if type was NULL.
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- drivers/of/base.c | 16 ++++++++++++++++ include/linux/of_graph.h | 8 ++++++++ 2 files changed, 24 insertions(+)
diff --git a/drivers/of/base.c b/drivers/of/base.c index 705ea15..76d2819 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -2596,3 +2596,19 @@ bool of_graph_port_type_is(struct device_node *port, char *type) return false; } EXPORT_SYMBOL(of_graph_port_type_is); + +int of_graph_get_endpoint_count(const struct device_node *np, char *type) +{ + struct device_node *port, *endpoint; + int num = 0; + + for_each_of_endpoint(np, port, endpoint) { + if (!type) + num++; + else + num += of_graph_port_type_is(port, type); + } + + return num; +} +EXPORT_SYMBOL(of_graph_get_endpoint_count); diff --git a/include/linux/of_graph.h b/include/linux/of_graph.h index 7f735f8..826752f 100644 --- a/include/linux/of_graph.h +++ b/include/linux/of_graph.h @@ -52,11 +52,13 @@ struct of_endpoint { child = of_graph_get_next_endpoint(parent, child))
#define of_graph_port_type_is_sound(n) of_graph_port_type_is(n, "sound") +#define of_graph_get_sound_endpoint_count(n) of_graph_get_endpoint_count(n, "sound")
#ifdef CONFIG_OF int of_graph_parse_endpoint(const struct device_node *node, struct of_endpoint *endpoint); bool of_graph_port_type_is(struct device_node *port, char *type); +int of_graph_get_endpoint_count(const struct device_node *np, char *type); struct device_node *of_graph_get_port_by_id(struct device_node *node, u32 id); struct device_node *of_graph_get_top_port(struct device *dev); struct device_node *of_graph_get_next_port(const struct device_node *parent, @@ -87,6 +89,12 @@ static bool of_graph_port_type_is(struct device_node *port, char *type) return false; }
+static inline int of_graph_get_endpoint_count(const struct device_node *np, + char *type) +{ + return 0; +} + static inline struct device_node *of_graph_get_port_by_id( struct device_node *node, u32 id) {