diff mbox

[v7,4/9] of_graph: add of_graph_get_endpoint_count()

Message ID 87a87boojg.wl%kuninori.morimoto.gx@renesas.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kuninori Morimoto April 20, 2017, 1:32 a.m. UTC 
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()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
v6 -> v7

 - no change

 drivers/of/base.c        | 12 ++++++++++++
 include/linux/of_graph.h |  6 ++++++
 2 files changed, 18 insertions(+)

Comments

Rob Herring April 28, 2017, 7:35 p.m. UTC | #1 
On Wed, Apr 19, 2017 at 8:32 PM, Kuninori Morimoto
<kuninori.morimoto.gx@renesas.com> wrote:
>
> 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()
>
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> ---
> v6 -> v7
>
>  - no change
>
>  drivers/of/base.c        | 12 ++++++++++++
>  include/linux/of_graph.h |  6 ++++++
>  2 files changed, 18 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>
diff mbox

Patch

diff --git a/drivers/of/base.c b/drivers/of/base.c
index acda15b..bc42f91 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -2529,6 +2529,18 @@  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
diff --git a/include/linux/of_graph.h b/include/linux/of_graph.h
index 9db632d..3e058f0 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);
@@ -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)
 {