[media] v4l2-ctrls: add V4L2_CID_DV_RX/TX_IT_CONTENT_TYPE controls

HDMI and DisplayPort both support IT Content Type information that
tells the receiver what type of material the video is, graphics such
as from a PC desktop, Photo, Cinema or Game (low-latency).

This patch adds controls for receivers and transmitters to get/set
this information.

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

1 files changed, 10 insertions, 0 deletions

diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 2d225bcdb831..2ae5c3ea179b 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -912,8 +912,18 @@ enum v4l2_dv_rgb_range {
         V4L2_DV_RGB_RANGE_FULL    = 2,
 };
 
+#define V4L2_CID_DV_TX_IT_CONTENT_TYPE          (V4L2_CID_DV_CLASS_BASE + 6)
+enum v4l2_dv_it_content_type {
+        V4L2_DV_IT_CONTENT_TYPE_GRAPHICS  = 0,
+        V4L2_DV_IT_CONTENT_TYPE_PHOTO     = 1,
+        V4L2_DV_IT_CONTENT_TYPE_CINEMA    = 2,
+        V4L2_DV_IT_CONTENT_TYPE_GAME      = 3,
+        V4L2_DV_IT_CONTENT_TYPE_NO_ITC    = 4,
+};
+
 #define V4L2_CID_DV_RX_POWER_PRESENT            (V4L2_CID_DV_CLASS_BASE + 100)
 #define V4L2_CID_DV_RX_RGB_RANGE                (V4L2_CID_DV_CLASS_BASE + 101)
+#define V4L2_CID_DV_RX_IT_CONTENT_TYPE          (V4L2_CID_DV_CLASS_BASE + 102)
 
 #define V4L2_CID_FM_RX_CLASS_BASE               (V4L2_CTRL_CLASS_FM_RX | 0x900)
 #define V4L2_CID_FM_RX_CLASS                    (V4L2_CTRL_CLASS_FM_RX | 1)