[media] v4l2 core: add the missing pieces to support DVI/HDMI/DisplayPort

These new controls and two new ioctls make it possible to properly support
VGA, DVI-A/D/I, HDMI and DisplayPort connectors. All these controls and the
ioctls are all at the sub-device level. They are meant for V4L2 bridge/platform
drivers or to be accessed on embedded systems through /dev/v4l-subdev* device
nodes.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
index 8c57ee9872bb..a33c4daadce3 100644
--- a/include/linux/v4l2-subdev.h
+++ b/include/linux/v4l2-subdev.h
@@ -148,6 +148,14 @@ struct v4l2_subdev_selection {
         __u32 reserved[8];
 };
 
+struct v4l2_subdev_edid {
+        __u32 pad;
+        __u32 start_block;
+        __u32 blocks;
+        __u32 reserved[5];
+        __u8 __user *edid;
+};
+
 #define VIDIOC_SUBDEV_G_FMT     _IOWR('V',  4, struct v4l2_subdev_format)
 #define VIDIOC_SUBDEV_S_FMT     _IOWR('V',  5, struct v4l2_subdev_format)
 #define VIDIOC_SUBDEV_G_FRAME_INTERVAL \
@@ -166,5 +174,7 @@ struct v4l2_subdev_selection {
         _IOWR('V', 61, struct v4l2_subdev_selection)
 #define VIDIOC_SUBDEV_S_SELECTION \
         _IOWR('V', 62, struct v4l2_subdev_selection)
+#define VIDIOC_SUBDEV_G_EDID    _IOWR('V', 40, struct v4l2_subdev_edid)
+#define VIDIOC_SUBDEV_S_EDID    _IOWR('V', 41, struct v4l2_subdev_edid)
 
 #endif