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
72     mode (video + audio + auxiliary data). This control selects which
73     mode to use: V4L2_DV_TX_MODE_DVI_D or V4L2_DV_TX_MODE_HDMI.
79 enum v4l2_dv_rgb_range -
81     follows the RGB quantization range specified in the standard for the
84     standard to be compatible with sinks that have not implemented the
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 -
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 -
140     follows the RGB quantization range specified in the standard for the
143     standard to be compatible with sources that have not implemented the
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 -