media/v4l/ext-ctrls-dv.rst

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _dv-controls:
15 only exposed on the ``/dev/v4l-subdev*`` device node.
23    Identification Data, :ref:`vesaedid`) and HDCP (High-bandwidth Digital
33 .. _dv-control-id:
47     read-only control is applicable to DVI-D, HDMI and DisplayPort
51     Rx Sense is the detection of pull-ups on the TMDS clock lines. This
56     that pad will be 0. This read-only control is applicable to DVI-D
64     EDIDs, then the bit for that pad will be 0. This read-only control
65     is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
70 enum v4l2_dv_tx_mode -
71     HDMI transmitters can transmit in DVI-D mode (just video) or in HDMI
79 enum v4l2_dv_rgb_range -
85     standard correctly (unfortunately quite common for HDMI and DVI-D).
87     range sets the range to (16 << (N-8)) - (235 << (N-8)) where N is
89     DVI-A/D, HDMI and DisplayPort connectors.
94 enum v4l2_dv_it_content_type -
98     originates from a computer as opposed to content from a TV broadcast
104 .. flat-table::
105     :header-rows:  0
106     :stub-columns: 0
108     * - ``V4L2_DV_IT_CONTENT_TYPE_GRAPHICS``
109       - Graphics content. Pixel data should be passed unfiltered and
111     * - ``V4L2_DV_IT_CONTENT_TYPE_PHOTO``
112       - Photo content. The content is derived from digital still pictures.
115     * - ``V4L2_DV_IT_CONTENT_TYPE_CINEMA``
116       - Cinema content.
117     * - ``V4L2_DV_IT_CONTENT_TYPE_GAME``
118       - Game content. Audio and video latency should be minimized.
119     * - ``V4L2_DV_IT_CONTENT_TYPE_NO_ITC``
120       - No IT Content information is available and the ITC bit in the AVI
132     will be 0. This read-only control is applicable to DVI-D, HDMI and
138 enum v4l2_dv_rgb_range -
144     standard correctly (unfortunately quite common for HDMI and DVI-D).
146     range sets the range to (16 << (N-8)) - (235 << (N-8)) where N is
148     DVI-A/D, HDMI and DisplayPort connectors.
153 enum v4l2_dv_it_content_type -
157     from a computer as opposed to content from a TV broadcast or an