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

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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>
This commit is contained in:
Hans Verkuil 2012-07-05 10:58:06 -03:00 committed by Mauro Carvalho Chehab
parent faedc36377
commit 777f4f85b7
2 changed files with 33 additions and 0 deletions
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10
include/linux/v4l2-subdev.h
View file

@ -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

23
include/linux/videodev2.h
View file

@ -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
*/