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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2013-05-17 07:31:04 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-04-03 00:50:46 -0300
commitc9bca8b33118573da9b7ac2ea21947a8e4d287dd (patch)
treec31d34a89eb3ea5233f4f3494386ad130c0fa950 /include/media
parent2dca0551e4e2f3fc2b9beee784c7071e1e79c14b (diff)
[media] v4l: of: Add v4l2_of_parse_link() function
The function fills a link data structure with the device node and port number at both the local and remote ends of a link defined by one of its endpoint nodes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-of.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/media/v4l2-of.h b/include/media/v4l2-of.h
index 2de42c584eb2..f831c9c225b6 100644
--- a/include/media/v4l2-of.h
+++ b/include/media/v4l2-of.h
@@ -69,9 +69,26 @@ struct v4l2_of_endpoint {
struct list_head head;
};
+/**
+ * struct v4l2_of_link - a link between two endpoints
+ * @local_node: pointer to device_node of this endpoint
+ * @local_port: identifier of the port this endpoint belongs to
+ * @remote_node: pointer to device_node of the remote endpoint
+ * @remote_port: identifier of the port the remote endpoint belongs to
+ */
+struct v4l2_of_link {
+ struct device_node *local_node;
+ unsigned int local_port;
+ struct device_node *remote_node;
+ unsigned int remote_port;
+};
+
#ifdef CONFIG_OF
int v4l2_of_parse_endpoint(const struct device_node *node,
struct v4l2_of_endpoint *endpoint);
+int v4l2_of_parse_link(const struct device_node *node,
+ struct v4l2_of_link *link);
+void v4l2_of_put_link(struct v4l2_of_link *link);
#else /* CONFIG_OF */
static inline int v4l2_of_parse_endpoint(const struct device_node *node,
@@ -80,6 +97,16 @@ static inline int v4l2_of_parse_endpoint(const struct device_node *node,
return -ENOSYS;
}
+static inline int v4l2_of_parse_link(const struct device_node *node,
+ struct v4l2_of_link *link)
+{
+ return -ENOSYS;
+}
+
+static inline void v4l2_of_put_link(struct v4l2_of_link *link)
+{
+}
+
#endif /* CONFIG_OF */
#endif /* _V4L2_OF_H */