media: Add bus type to frame descriptors

Add the media bus type to the frame descriptor. CSI-2 specific
information will be added in next patch to the frame descriptor.

- Make the bus type a named enum

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 33a7201..544ddd1 100644 (file)
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -345,11 +345,31 @@ struct v4l2_mbus_frame_desc_entry {
 #define V4L2_FRAME_DESC_ENTRY_MAX      4
 
 /**
+ * enum v4l2_mbus_frame_desc_type - media bus frame description type
+ *
+ * @V4L2_MBUS_FRAME_DESC_TYPE_UNDEFINED:
+ *     Undefined frame desc type. Drivers should not use this, it is
+ *     for backwards compatibility.
+ * @V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL:
+ *     Parallel media bus.
+ * @V4L2_MBUS_FRAME_DESC_TYPE_CSI2:
+ *     CSI-2 media bus. Frame desc parameters must be set in
+ *     &struct v4l2_mbus_frame_desc_entry->csi2.
+ */
+enum v4l2_mbus_frame_desc_type {
+       V4L2_MBUS_FRAME_DESC_TYPE_UNDEFINED = 0,
+       V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL,
+       V4L2_MBUS_FRAME_DESC_TYPE_CSI2,
+};
+
+/**
  * struct v4l2_mbus_frame_desc - media bus data frame description
+ * @type: type of the bus (enum v4l2_mbus_frame_desc_type)
  * @entry: frame descriptors array
  * @num_entries: number of entries in @entry array
  */
 struct v4l2_mbus_frame_desc {
+       enum v4l2_mbus_frame_desc_type type;
        struct v4l2_mbus_frame_desc_entry entry[V4L2_FRAME_DESC_ENTRY_MAX];
        unsigned short num_entries;
 };