[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>

diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
index 8c57ee9872bb429ea6e27cbe839326e9281ecd1f..a33c4daadce31dbe2cc1011053fd8cab2f28ead6 100644 (file)
--- 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

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 7a147c8299ab36c5c289a8396664fa3be6fd377e..91939a7a896e0d514364cf7219b2ebf798cdd39f 100644 (file)
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1250,6 +1250,7 @@ struct v4l2_ext_controls {
 #define V4L2_CTRL_CLASS_JPEG 0x009d0000                /* JPEG-compression controls */
 #define V4L2_CTRL_CLASS_IMAGE_SOURCE 0x009e0000        /* Image source controls */
 #define V4L2_CTRL_CLASS_IMAGE_PROC 0x009f0000  /* Image processing controls */
+#define V4L2_CTRL_CLASS_DV 0x00a00000          /* Digital Video controls */
 
 #define V4L2_CTRL_ID_MASK                (0x0fffffff)
 #define V4L2_CTRL_ID2CLASS(id)    ((id) & 0x0fff0000UL)
@@ -1993,6 +1994,28 @@ enum v4l2_jpeg_chroma_subsampling {
 #define V4L2_CID_LINK_FREQ                     (V4L2_CID_IMAGE_PROC_CLASS_BASE + 1)
 #define V4L2_CID_PIXEL_RATE                    (V4L2_CID_IMAGE_PROC_CLASS_BASE + 2)
 
+/*  DV-class control IDs defined by V4L2 */
+#define V4L2_CID_DV_CLASS_BASE                 (V4L2_CTRL_CLASS_DV | 0x900)
+#define V4L2_CID_DV_CLASS                      (V4L2_CTRL_CLASS_DV | 1)
+
+#define        V4L2_CID_DV_TX_HOTPLUG                  (V4L2_CID_DV_CLASS_BASE + 1)
+#define        V4L2_CID_DV_TX_RXSENSE                  (V4L2_CID_DV_CLASS_BASE + 2)
+#define        V4L2_CID_DV_TX_EDID_PRESENT             (V4L2_CID_DV_CLASS_BASE + 3)
+#define        V4L2_CID_DV_TX_MODE                     (V4L2_CID_DV_CLASS_BASE + 4)
+enum v4l2_dv_tx_mode {
+       V4L2_DV_TX_MODE_DVI_D   = 0,
+       V4L2_DV_TX_MODE_HDMI    = 1,
+};
+#define V4L2_CID_DV_TX_RGB_RANGE               (V4L2_CID_DV_CLASS_BASE + 5)
+enum v4l2_dv_rgb_range {
+       V4L2_DV_RGB_RANGE_AUTO    = 0,
+       V4L2_DV_RGB_RANGE_LIMITED = 1,
+       V4L2_DV_RGB_RANGE_FULL    = 2,
+};
+
+#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)
+
 /*
  *     T U N I N G
  */