media: v4l2-fwnode: add v4l2_fwnode_connector

Currently every driver needs to parse the connector endpoints by it self.
This is the initial work to make this generic. A generic connector has
common members and connector specific members. The common members are:
  - type
  - label (optional)
  - links
  - nr_of_links

The specific members are stored within a union, since only one of them
can be available at the time. Since this is the initial support the
patch adds only the analog-connector specific ones.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
index 7bba6df..6cf39d4 100644 (file)
--- a/include/media/v4l2-fwnode.h
+++ b/include/media/v4l2-fwnode.h
@@ -128,6 +128,63 @@ struct v4l2_fwnode_link {
 };
 
 /**
+ * enum v4l2_connector_type - connector type
+ * @V4L2_CONN_UNKNOWN:   unknown connector type, no V4L2 connector configuration
+ * @V4L2_CONN_COMPOSITE: analog composite connector
+ * @V4L2_CONN_SVIDEO:    analog svideo connector
+ */
+enum v4l2_connector_type {
+       V4L2_CONN_UNKNOWN,
+       V4L2_CONN_COMPOSITE,
+       V4L2_CONN_SVIDEO,
+};
+
+/**
+ * struct v4l2_connector_link - connector link data structure
+ * @head: structure to be used to add the link to the
+ *        &struct v4l2_fwnode_connector
+ * @fwnode_link: &struct v4l2_fwnode_link link between the connector and the
+ *               device the connector belongs to.
+ */
+struct v4l2_connector_link {
+       struct list_head head;
+       struct v4l2_fwnode_link fwnode_link;
+};
+
+/**
+ * struct v4l2_fwnode_connector_analog - analog connector data structure
+ * @sdtv_stds: sdtv standards this connector supports, set to V4L2_STD_ALL
+ *             if no restrictions are specified.
+ */
+struct v4l2_fwnode_connector_analog {
+       v4l2_std_id sdtv_stds;
+};
+
+/**
+ * struct v4l2_fwnode_connector - the connector data structure
+ * @name: the connector device name
+ * @label: optional connector label
+ * @type: connector type
+ * @links: list of all connector &struct v4l2_connector_link links
+ * @nr_of_links: total number of links
+ * @connector: connector configuration
+ * @connector.analog: analog connector configuration
+ *                    &struct v4l2_fwnode_connector_analog
+ */
+struct v4l2_fwnode_connector {
+       const char *name;
+       const char *label;
+       enum v4l2_connector_type type;
+       struct list_head links;
+       unsigned int nr_of_links;
+
+       union {
+               struct v4l2_fwnode_connector_analog analog;
+               /* future connectors */
+       } connector;
+};
+
+/**
  * v4l2_fwnode_endpoint_parse() - parse all fwnode node properties
  * @fwnode: pointer to the endpoint's fwnode handle
  * @vep: pointer to the V4L2 fwnode data structure