[PATCH v2 3/7] of_graph: add of_graph_get_endpoint_count()
From: Kuninori Morimoto <hidden>
Date: 2017-02-13 04:21:42
Also in:
alsa-devel
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
From: Kuninori Morimoto <redacted> 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 <redacted> --- v1 -> v2 - fixup non CONFIG_OF define drivers/of/base.c | 12 ++++++++++++ include/linux/of_graph.h | 6 ++++++ 2 files changed, 18 insertions(+)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 6994888..e79abb1 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c@@ -2523,3 +2523,15 @@ struct device_node *of_graph_get_remote_port(const struct device_node *node) return of_get_next_parent(np); } 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);
diff --git a/include/linux/of_graph.h b/include/linux/of_graph.h
index 80ced0c..0296a19 100644
--- a/include/linux/of_graph.h
+++ b/include/linux/of_graph.h@@ -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);
@@ -62,6 +63,11 @@ 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) {
--
1.9.1
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