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Message-ID: <87h97erevu.wl%kuninori.morimoto.gx@renesas.com>
Date: Fri, 11 Nov 2016 01:21:29 +0000
From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To: Rob Herring <robh+dt@...nel.org>, Mark Brown <broonie@...nel.org>
CC: Linux-ALSA <alsa-devel@...a-project.org>,
Liam Girdwood <lgirdwood@...il.com>,
Simon <horms@...ge.net.au>,
Laurent <laurent.pinchart@...asonboard.com>,
Guennadi <g.liakhovetski@....de>,
Grant Likely <grant.likely@...aro.org>,
Frank Rowand <frowand.list@...il.com>,
Linux-DT <devicetree@...r.kernel.org>,
Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 10/17] of_graph: add of_graph_get_port/endpoint_count()
From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
OF graph want to count its port/endpoint number, same as
of_get_child_count(). This patch adds these functions.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
---
v2 -> v3
- no change
drivers/of/base.c | 24 ++++++++++++++++++++++++
include/linux/of_graph.h | 8 ++++++++
2 files changed, 32 insertions(+)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index b11f533..e795d0f 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -2584,3 +2584,27 @@ 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_port_count(const struct device_node *np)
+{
+ struct device_node *port;
+ int num = 0;
+
+ for_each_of_port(np, port)
+ num++;
+
+ return num;
+}
+EXPORT_SYMBOL(of_graph_get_port_count);
+
+int of_graph_get_endpoint_count(const struct device_node *np)
+{
+ struct device_node *port, *endpoint;
+ int num = 0;
+
+ for_each_of_endpoint(np, port, 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 3de036f..c060a7c 100644
--- a/include/linux/of_graph.h
+++ b/include/linux/of_graph.h
@@ -54,6 +54,8 @@ struct of_endpoint {
#ifdef CONFIG_OF
int of_graph_parse_endpoint(const struct device_node *node,
struct of_endpoint *endpoint);
+int of_graph_get_port_count(const struct device_node *np);
+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_top_port(struct device *dev);
struct device_node *of_graph_get_next_port(const struct device_node *parent,
@@ -79,6 +81,12 @@ 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,
+ char *type)
+{
+ 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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