From c9bca8b33118573da9b7ac2ea21947a8e4d287dd Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 17 May 2013 07:31:04 -0300 Subject: [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 Acked-by: Hans Verkuil Acked-by: Sakari Ailus Acked-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- include/media/v4l2-of.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include/media') 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 */ -- cgit v1.2.3