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media updates for v4.1-rc1

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Merge tag 'media/v4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - a new frontend driver for new ATSC devices: lgdt3306a

 - a new sensor driver: ov2659

 - a new platform driver: xilinx

 - the m88ts2022 tuner driver was merged at ts2020 driver

 - the media controller gained experimental support for DVB and hybrid
   devices

 - lots of random cleanups, fixes and improvements on media drivers

* tag 'media/v4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (404 commits)
  [media] uvcvideo: add support for VIDIOC_QUERY_EXT_CTRL
  [media] uvcvideo: fix cropcap v4l2-compliance failure
  [media] media: omap3isp: remove unused clkdev
  [media] coda: Add tracing support
  [media] coda: drop dma_sync_single_for_device in coda_bitstream_queue
  [media] coda: fix fill bitstream errors in nonstreaming case
  [media] coda: call SEQ_END when the first queue is stopped
  [media] coda: fail to start streaming if userspace set invalid formats
  [media] coda: remove duplicate error messages for buffer allocations
  [media] coda: move parameter buffer in together with context buffer allocation
  [media] coda: allocate bitstream buffer from REQBUFS, size depends on the format
  [media] coda: allocate per-context buffers from REQBUFS
  [media] coda: use strlcpy instead of snprintf
  [media] coda: bitstream payload is unsigned
  [media] coda: fix double call to debugfs_remove
  [media] coda: check kasprintf return value in coda_open
  [media] coda: bitrate can only be set in kbps steps
  [media] v4l2-mem2mem: no need to initialize b in v4l2_m2m_next_buf and v4l2_m2m_buf_remove
  [media] s5p-mfc: set allow_zero_bytesused flag for vb2_queue_init
  [media] coda: set allow_zero_bytesused flag for vb2_queue_init
  ...
This commit is contained in:
Linus Torvalds 2015-04-21 10:01:27 -07:00
commit 0c8027d50c
458 changed files with 17083 additions and 6399 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Documentation/DocBook/media/v4l/compat.xml
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@ -2491,7 +2491,7 @@ that used it. It was originally scheduled for removal in 2.6.35.
</listitem>
<listitem>
<para>Added <constant>V4L2_EVENT_CTRL_CH_RANGE</constant> control event
changes flag. See <xref linkend="changes-flags"/>.</para>
changes flag. See <xref linkend="ctrl-changes-flags"/>.</para>
</listitem>
</orderedlist>
</section>

92
Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml
View file

@ -143,86 +143,28 @@
<row>
<entry></entry>
<entry>struct</entry>
<entry><structfield>v4l</structfield></entry>
<entry><structfield>dev</structfield></entry>
<entry></entry>
<entry>Valid for V4L sub-devices and nodes only.</entry>
<entry>Valid for (sub-)devices that create a single device node.</entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry>__u32</entry>
<entry><structfield>major</structfield></entry>
<entry>V4L device node major number. For V4L sub-devices with no
device node, set by the driver to 0.</entry>
<entry>Device node major number.</entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry>__u32</entry>
<entry><structfield>minor</structfield></entry>
<entry>V4L device node minor number. For V4L sub-devices with no
device node, set by the driver to 0.</entry>
</row>
<row>
<entry></entry>
<entry>struct</entry>
<entry><structfield>fb</structfield></entry>
<entry></entry>
<entry>Valid for frame buffer nodes only.</entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry>__u32</entry>
<entry><structfield>major</structfield></entry>
<entry>Frame buffer device node major number.</entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry>__u32</entry>
<entry><structfield>minor</structfield></entry>
<entry>Frame buffer device node minor number.</entry>
</row>
<row>
<entry></entry>
<entry>struct</entry>
<entry><structfield>alsa</structfield></entry>
<entry></entry>
<entry>Valid for ALSA devices only.</entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry>__u32</entry>
<entry><structfield>card</structfield></entry>
<entry>ALSA card number</entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry>__u32</entry>
<entry><structfield>device</structfield></entry>
<entry>ALSA device number</entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry>__u32</entry>
<entry><structfield>subdevice</structfield></entry>
<entry>ALSA sub-device number</entry>
</row>
<row>
<entry></entry>
<entry>int</entry>
<entry><structfield>dvb</structfield></entry>
<entry></entry>
<entry>DVB card number</entry>
<entry>Device node minor number.</entry>
</row>
<row>
<entry></entry>
<entry>__u8</entry>
<entry><structfield>raw</structfield>[180]</entry>
<entry><structfield>raw</structfield>[184]</entry>
<entry></entry>
<entry></entry>
</row>
@ -253,8 +195,24 @@
<entry>ALSA card</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB</constant></entry>
<entry>DVB card</entry>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_FE</constant></entry>
<entry>DVB frontend devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_DEMUX</constant></entry>
<entry>DVB demux devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_DVR</constant></entry>
<entry>DVB DVR devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_CA</constant></entry>
<entry>DVB CAM devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_NET</constant></entry>
<entry>DVB network devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV</constant></entry>
@ -282,6 +240,10 @@
it in some digital video standard, with appropriate embedded timing
signals.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_TUNER</constant></entry>
<entry>TV and/or radio tuner</entry>
</row>
</tbody>
</tgroup>
</table>

79
Documentation/DocBook/media/v4l/pixfmt-packed-rgb.xml
View file

@ -303,45 +303,6 @@ for a pixel lie next to each other in memory.</para>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
</row>
<row id="V4L2-PIX-FMT-BGR666">
<entry><constant>V4L2_PIX_FMT_BGR666</constant></entry>
<entry>'BGRH'</entry>
<entry></entry>
<entry>b<subscript>5</subscript></entry>
<entry>b<subscript>4</subscript></entry>
<entry>b<subscript>3</subscript></entry>
<entry>b<subscript>2</subscript></entry>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
<entry>g<subscript>5</subscript></entry>
<entry>g<subscript>4</subscript></entry>
<entry></entry>
<entry>g<subscript>3</subscript></entry>
<entry>g<subscript>2</subscript></entry>
<entry>g<subscript>1</subscript></entry>
<entry>g<subscript>0</subscript></entry>
<entry>r<subscript>5</subscript></entry>
<entry>r<subscript>4</subscript></entry>
<entry>r<subscript>3</subscript></entry>
<entry>r<subscript>2</subscript></entry>
<entry></entry>
<entry>r<subscript>1</subscript></entry>
<entry>r<subscript>0</subscript></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
<entry></entry>
</row>
<row id="V4L2-PIX-FMT-BGR24">
<entry><constant>V4L2_PIX_FMT_BGR24</constant></entry>
<entry>'BGR3'</entry>
@ -404,6 +365,46 @@ for a pixel lie next to each other in memory.</para>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
</row>
<row id="V4L2-PIX-FMT-BGR666">
<entry><constant>V4L2_PIX_FMT_BGR666</constant></entry>
<entry>'BGRH'</entry>
<entry></entry>
<entry>b<subscript>5</subscript></entry>
<entry>b<subscript>4</subscript></entry>
<entry>b<subscript>3</subscript></entry>
<entry>b<subscript>2</subscript></entry>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
<entry>g<subscript>5</subscript></entry>
<entry>g<subscript>4</subscript></entry>
<entry></entry>
<entry>g<subscript>3</subscript></entry>
<entry>g<subscript>2</subscript></entry>
<entry>g<subscript>1</subscript></entry>
<entry>g<subscript>0</subscript></entry>
<entry>r<subscript>5</subscript></entry>
<entry>r<subscript>4</subscript></entry>
<entry>r<subscript>3</subscript></entry>
<entry>r<subscript>2</subscript></entry>
<entry></entry>
<entry>r<subscript>1</subscript></entry>
<entry>r<subscript>0</subscript></entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry></entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
<entry>-</entry>
</row>
<row id="V4L2-PIX-FMT-ABGR32">
<entry><constant>V4L2_PIX_FMT_ABGR32</constant></entry>
<entry>'AR24'</entry>

16
Documentation/DocBook/media/v4l/pixfmt-sgrbg8.xml
View file

@ -38,10 +38,10 @@ columns and rows.</para>
</row>
<row>
<entry>start&nbsp;+&nbsp;4:</entry>
<entry>R<subscript>10</subscript></entry>
<entry>B<subscript>11</subscript></entry>
<entry>R<subscript>12</subscript></entry>
<entry>B<subscript>13</subscript></entry>
<entry>B<subscript>10</subscript></entry>
<entry>G<subscript>11</subscript></entry>
<entry>B<subscript>12</subscript></entry>
<entry>G<subscript>13</subscript></entry>
</row>
<row>
<entry>start&nbsp;+&nbsp;8:</entry>
@ -52,10 +52,10 @@ columns and rows.</para>
</row>
<row>
<entry>start&nbsp;+&nbsp;12:</entry>
<entry>R<subscript>30</subscript></entry>
<entry>B<subscript>31</subscript></entry>
<entry>R<subscript>32</subscript></entry>
<entry>B<subscript>33</subscript></entry>
<entry>B<subscript>30</subscript></entry>
<entry>G<subscript>31</subscript></entry>
<entry>B<subscript>32</subscript></entry>
<entry>G<subscript>33</subscript></entry>
</row>
</tbody>
</tgroup>

2
Documentation/DocBook/media/v4l/pixfmt-srggb10p.xml
View file

@ -38,7 +38,7 @@
<title>Byte Order.</title>
<para>Each cell is one byte.
<informaltable frame="topbot" colsep="1" rowsep="1">
<tgroup cols="5" align="center" border="1">
<tgroup cols="5" align="center">
<colspec align="left" colwidth="2*" />
<tbody valign="top">
<row>

4
Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml
View file

@ -29,12 +29,12 @@ and Cr planes have half as many pad bytes after their rows. In other
words, two Cx rows (including padding) is exactly as long as one Y row
(including padding).</para>
<para><constant>V4L2_PIX_FMT_NV12M</constant> is intended to be
<para><constant>V4L2_PIX_FMT_YUV420M</constant> is intended to be
used only in drivers and applications that support the multi-planar API,
described in <xref linkend="planar-apis"/>. </para>
<example>
<title><constant>V4L2_PIX_FMT_YVU420M</constant> 4 &times; 4
<title><constant>V4L2_PIX_FMT_YUV420M</constant> 4 &times; 4
pixel image</title>
<formalpara>

110
Documentation/DocBook/media/v4l/pixfmt.xml
View file

@ -80,9 +80,9 @@ padding bytes after the last line of an image cross a system page
boundary. Input devices may write padding bytes, the value is
undefined. Output devices ignore the contents of padding
bytes.</para><para>When the image format is planar the
<structfield>bytesperline</structfield> value applies to the largest
<structfield>bytesperline</structfield> value applies to the first
plane and is divided by the same factor as the
<structfield>width</structfield> field for any smaller planes. For
<structfield>width</structfield> field for the other planes. For
example the Cb and Cr planes of a YUV 4:2:0 image have half as many
padding bytes following each line as the Y plane. To avoid ambiguities
drivers must return a <structfield>bytesperline</structfield> value
@ -182,14 +182,14 @@ see <xref linkend="colorspaces" />.</entry>
</entry>
</row>
<row>
<entry>__u16</entry>
<entry>__u32</entry>
<entry><structfield>bytesperline</structfield></entry>
<entry>Distance in bytes between the leftmost pixels in two adjacent
lines. See &v4l2-pix-format;.</entry>
</row>
<row>
<entry>__u16</entry>
<entry><structfield>reserved[7]</structfield></entry>
<entry><structfield>reserved[6]</structfield></entry>
<entry>Reserved for future extensions. Should be zeroed by the
application.</entry>
</row>
@ -483,8 +483,8 @@ is the Y'CbCr encoding identifier (&v4l2-ycbcr-encoding;) to specify non-standar
Y'CbCr encodings and the third is the quantization identifier (&v4l2-quantization;)
to specify non-standard quantization methods. Most of the time only the colorspace
field of &v4l2-pix-format; or &v4l2-pix-format-mplane; needs to be filled in. Note
that the default R'G'B' quantization is always full range for all colorspaces,
so this won't be mentioned explicitly for each colorspace description.</para>
that the default R'G'B' quantization is full range for all colorspaces except for
BT.2020 which uses limited range R'G'B' quantization.</para>
<table pgwide="1" frame="none" id="v4l2-colorspace">
<title>V4L2 Colorspaces</title>
@ -598,7 +598,8 @@ so this won't be mentioned explicitly for each colorspace description.</para>
<row>
<entry><constant>V4L2_QUANTIZATION_DEFAULT</constant></entry>
<entry>Use the default quantization encoding as defined by the colorspace.
This is always full range for R'G'B' and usually limited range for Y'CbCr.</entry>
This is always full range for R'G'B' (except for the BT.2020 colorspace) and usually
limited range for Y'CbCr.</entry>
</row>
<row>
<entry><constant>V4L2_QUANTIZATION_FULL_RANGE</constant></entry>
@ -620,8 +621,8 @@ is mapped to [16&hellip;235]. Cb and Cr are mapped from [-0.5&hellip;0.5] to [16
<section>
<title>Detailed Colorspace Descriptions</title>
<section>
<title id="col-smpte-170m">Colorspace SMPTE 170M (<constant>V4L2_COLORSPACE_SMPTE170M</constant>)</title>
<section id="col-smpte-170m">
<title>Colorspace SMPTE 170M (<constant>V4L2_COLORSPACE_SMPTE170M</constant>)</title>
<para>The <xref linkend="smpte170m" /> standard defines the colorspace used by NTSC and PAL and by SDTV
in general. The default Y'CbCr encoding is <constant>V4L2_YCBCR_ENC_601</constant>.
The default Y'CbCr quantization is limited range. The chromaticities of the primary colors and
@ -666,8 +667,7 @@ as the SMPTE C set, so this colorspace is sometimes called SMPTE C as well.</par
<variablelist>
<varlistentry>
<term>The transfer function defined for SMPTE 170M is the same as the
one defined in Rec. 709. Normally L is in the range [0&hellip;1], but for the extended
gamut xvYCC encoding values outside that range are allowed.</term>
one defined in Rec. 709.</term>
<listitem>
<para>L' = -1.099(-L)<superscript>0.45</superscript>&nbsp;+&nbsp;0.099&nbsp;for&nbsp;L&nbsp;&le;&nbsp;-0.018</para>
<para>L' = 4.5L&nbsp;for&nbsp;-0.018&nbsp;&lt;&nbsp;L&nbsp;&lt;&nbsp;0.018</para>
@ -702,29 +702,10 @@ defined in the <xref linkend="itu601" /> standard and this colorspace is sometim
though BT.601 does not mention any color primaries.</para>
<para>The default quantization is limited range, but full range is possible although
rarely seen.</para>
<para>The <constant>V4L2_YCBCR_ENC_601</constant> encoding as described above is the
default for this colorspace, but it can be overridden with <constant>V4L2_YCBCR_ENC_709</constant>,
in which case the Rec. 709 Y'CbCr encoding is used.</para>
<variablelist>
<varlistentry>
<term>The xvYCC 601 encoding (<constant>V4L2_YCBCR_ENC_XV601</constant>, <xref linkend="xvycc" />) is similar
to the BT.601 encoding, but it allows for R', G' and B' values that are outside the range
[0&hellip;1]. The resulting Y', Cb and Cr values are scaled and offset:</term>
<listitem>
<para>Y'&nbsp;=&nbsp;(219&nbsp;/&nbsp;255)&nbsp;*&nbsp;(0.299R'&nbsp;+&nbsp;0.587G'&nbsp;+&nbsp;0.114B')&nbsp;+&nbsp;(16&nbsp;/&nbsp;255)</para>
<para>Cb&nbsp;=&nbsp;(224&nbsp;/&nbsp;255)&nbsp;*&nbsp;(-0.169R'&nbsp;-&nbsp;0.331G'&nbsp;+&nbsp;0.5B')</para>
<para>Cr&nbsp;=&nbsp;(224&nbsp;/&nbsp;255)&nbsp;*&nbsp;(0.5R'&nbsp;-&nbsp;0.419G'&nbsp;-&nbsp;0.081B')</para>
</listitem>
</varlistentry>
</variablelist>
<para>Y' is clamped to the range [0&hellip;1] and Cb and Cr are clamped
to the range [-0.5&hellip;0.5]. The non-standard xvYCC 709 encoding can also be used by selecting
<constant>V4L2_YCBCR_ENC_XV709</constant>. The xvYCC encodings always use full range
quantization.</para>
</section>
<section>
<title id="col-rec709">Colorspace Rec. 709 (<constant>V4L2_COLORSPACE_REC709</constant>)</title>
<section id="col-rec709">
<title>Colorspace Rec. 709 (<constant>V4L2_COLORSPACE_REC709</constant>)</title>
<para>The <xref linkend="itu709" /> standard defines the colorspace used by HDTV in general. The default
Y'CbCr encoding is <constant>V4L2_YCBCR_ENC_709</constant>. The default Y'CbCr quantization is
limited range. The chromaticities of the primary colors and the white reference are:</para>
@ -803,26 +784,39 @@ rarely seen.</para>
<para>The <constant>V4L2_YCBCR_ENC_709</constant> encoding described above is the default
for this colorspace, but it can be overridden with <constant>V4L2_YCBCR_ENC_601</constant>, in which
case the BT.601 Y'CbCr encoding is used.</para>
<para>Two additional extended gamut Y'CbCr encodings are also possible with this colorspace:</para>
<variablelist>
<varlistentry>
<term>The xvYCC 709 encoding (<constant>V4L2_YCBCR_ENC_XV709</constant>, <xref linkend="xvycc" />)
is similar to the Rec. 709 encoding, but it allows for R', G' and B' values that are outside the range
[0&hellip;1]. The resulting Y', Cb and Cr values are scaled and offset:</term>
<listitem>
<para>Y'&nbsp;=&nbsp;(219&nbsp;/&nbsp;255)&nbsp;*&nbsp;(0.2126R'&nbsp;+&nbsp;0.7152G'&nbsp;+&nbsp;0.0722B')&nbsp;+&nbsp;(16&nbsp;/&nbsp;255)</para>
<para>Cb&nbsp;=&nbsp;(224&nbsp;/&nbsp;255)&nbsp;*&nbsp;(-0.1146R'&nbsp;-&nbsp;0.3854G'&nbsp;+&nbsp;0.5B')</para>
<para>Cr&nbsp;=&nbsp;(224&nbsp;/&nbsp;255)&nbsp;*&nbsp;(0.5R'&nbsp;-&nbsp;0.4542G'&nbsp;-&nbsp;0.0458B')</para>
<para>Y'&nbsp;=&nbsp;(219&nbsp;/&nbsp;256)&nbsp;*&nbsp;(0.2126R'&nbsp;+&nbsp;0.7152G'&nbsp;+&nbsp;0.0722B')&nbsp;+&nbsp;(16&nbsp;/&nbsp;256)</para>
<para>Cb&nbsp;=&nbsp;(224&nbsp;/&nbsp;256)&nbsp;*&nbsp;(-0.1146R'&nbsp;-&nbsp;0.3854G'&nbsp;+&nbsp;0.5B')</para>
<para>Cr&nbsp;=&nbsp;(224&nbsp;/&nbsp;256)&nbsp;*&nbsp;(0.5R'&nbsp;-&nbsp;0.4542G'&nbsp;-&nbsp;0.0458B')</para>
</listitem>
</varlistentry>
</variablelist>
<variablelist>
<varlistentry>
<term>The xvYCC 601 encoding (<constant>V4L2_YCBCR_ENC_XV601</constant>, <xref linkend="xvycc" />) is similar
to the BT.601 encoding, but it allows for R', G' and B' values that are outside the range
[0&hellip;1]. The resulting Y', Cb and Cr values are scaled and offset:</term>
<listitem>
<para>Y'&nbsp;=&nbsp;(219&nbsp;/&nbsp;256)&nbsp;*&nbsp;(0.299R'&nbsp;+&nbsp;0.587G'&nbsp;+&nbsp;0.114B')&nbsp;+&nbsp;(16&nbsp;/&nbsp;256)</para>
<para>Cb&nbsp;=&nbsp;(224&nbsp;/&nbsp;256)&nbsp;*&nbsp;(-0.169R'&nbsp;-&nbsp;0.331G'&nbsp;+&nbsp;0.5B')</para>
<para>Cr&nbsp;=&nbsp;(224&nbsp;/&nbsp;256)&nbsp;*&nbsp;(0.5R'&nbsp;-&nbsp;0.419G'&nbsp;-&nbsp;0.081B')</para>
</listitem>
</varlistentry>
</variablelist>
<para>Y' is clamped to the range [0&hellip;1] and Cb and Cr are clamped
to the range [-0.5&hellip;0.5]. The non-standard xvYCC 601 encoding can also be used by
selecting <constant>V4L2_YCBCR_ENC_XV601</constant>. The xvYCC encodings always use full
range quantization.</para>
to the range [-0.5&hellip;0.5]. The non-standard xvYCC 709 or xvYCC 601 encodings can be used by
selecting <constant>V4L2_YCBCR_ENC_XV709</constant> or <constant>V4L2_YCBCR_ENC_XV601</constant>.
The xvYCC encodings always use full range quantization.</para>
</section>
<section>
<title id="col-srgb">Colorspace sRGB (<constant>V4L2_COLORSPACE_SRGB</constant>)</title>
<section id="col-srgb">
<title>Colorspace sRGB (<constant>V4L2_COLORSPACE_SRGB</constant>)</title>
<para>The <xref linkend="srgb" /> standard defines the colorspace used by most webcams and computer graphics. The
default Y'CbCr encoding is <constant>V4L2_YCBCR_ENC_SYCC</constant>. The default Y'CbCr quantization
is full range. The chromaticities of the primary colors and the white reference are:</para>
@ -898,8 +892,8 @@ encoding, it is not. The <constant>V4L2_YCBCR_ENC_XV601</constant> scales and of
values before quantization, but this encoding does not do that.</para>
</section>
<section>
<title id="col-adobergb">Colorspace Adobe RGB (<constant>V4L2_COLORSPACE_ADOBERGB</constant>)</title>
<section id="col-adobergb">
<title>Colorspace Adobe RGB (<constant>V4L2_COLORSPACE_ADOBERGB</constant>)</title>
<para>The <xref linkend="adobergb" /> standard defines the colorspace used by computer graphics
that use the AdobeRGB colorspace. This is also known as the <xref linkend="oprgb" /> standard.
The default Y'CbCr encoding is <constant>V4L2_YCBCR_ENC_601</constant>. The default Y'CbCr
@ -970,12 +964,12 @@ clamped to the range [-0.5&hellip;0.5]. This transform is identical to one defin
SMPTE 170M/BT.601. The Y'CbCr quantization is limited range.</para>
</section>
<section>
<title id="col-bt2020">Colorspace BT.2020 (<constant>V4L2_COLORSPACE_BT2020</constant>)</title>
<section id="col-bt2020">
<title>Colorspace BT.2020 (<constant>V4L2_COLORSPACE_BT2020</constant>)</title>
<para>The <xref linkend="itu2020" /> standard defines the colorspace used by Ultra-high definition
television (UHDTV). The default Y'CbCr encoding is <constant>V4L2_YCBCR_ENC_BT2020</constant>.
The default Y'CbCr quantization is limited range. The chromaticities of the primary colors and
the white reference are:</para>
The default R'G'B' quantization is limited range (!), and so is the default Y'CbCr quantization.
The chromaticities of the primary colors and the white reference are:</para>
<table frame="none">
<title>BT.2020 Chromaticities</title>
<tgroup cols="3" align="left">
@ -1032,7 +1026,7 @@ the white reference are:</para>
<term>The luminance (Y') and color difference (Cb and Cr) are obtained with the
following <constant>V4L2_YCBCR_ENC_BT2020</constant> encoding:</term>
<listitem>
<para>Y'&nbsp;=&nbsp;0.2627R'&nbsp;+&nbsp;0.6789G'&nbsp;+&nbsp;0.0593B'</para>
<para>Y'&nbsp;=&nbsp;0.2627R'&nbsp;+&nbsp;0.6780G'&nbsp;+&nbsp;0.0593B'</para>
<para>Cb&nbsp;=&nbsp;-0.1396R'&nbsp;-&nbsp;0.3604G'&nbsp;+&nbsp;0.5B'</para>
<para>Cr&nbsp;=&nbsp;0.5R'&nbsp;-&nbsp;0.4598G'&nbsp;-&nbsp;0.0402B'</para>
</listitem>
@ -1046,7 +1040,7 @@ clamped to the range [-0.5&hellip;0.5]. The Y'CbCr quantization is limited range
<varlistentry>
<term>Luma:</term>
<listitem>
<para>Yc'&nbsp;=&nbsp;(0.2627R&nbsp;+&nbsp;0.6789G&nbsp;+&nbsp;0.0593B)'</para>
<para>Yc'&nbsp;=&nbsp;(0.2627R&nbsp;+&nbsp;0.6780G&nbsp;+&nbsp;0.0593B)'</para>
</listitem>
</varlistentry>
</variablelist>
@ -1054,7 +1048,7 @@ clamped to the range [-0.5&hellip;0.5]. The Y'CbCr quantization is limited range
<varlistentry>
<term>B'&nbsp;-&nbsp;Yc'&nbsp;&le;&nbsp;0:</term>
<listitem>
<para>Cbc&nbsp;=&nbsp;(B'&nbsp;-&nbsp;Y')&nbsp;/&nbsp;1.9404</para>
<para>Cbc&nbsp;=&nbsp;(B'&nbsp;-&nbsp;Yc')&nbsp;/&nbsp;1.9404</para>
</listitem>
</varlistentry>
</variablelist>
@ -1062,7 +1056,7 @@ clamped to the range [-0.5&hellip;0.5]. The Y'CbCr quantization is limited range
<varlistentry>
<term>B'&nbsp;-&nbsp;Yc'&nbsp;&gt;&nbsp;0:</term>
<listitem>
<para>Cbc&nbsp;=&nbsp;(B'&nbsp;-&nbsp;Y')&nbsp;/&nbsp;1.5816</para>
<para>Cbc&nbsp;=&nbsp;(B'&nbsp;-&nbsp;Yc')&nbsp;/&nbsp;1.5816</para>
</listitem>
</varlistentry>
</variablelist>
@ -1086,8 +1080,8 @@ clamped to the range [-0.5&hellip;0.5]. The Y'CbCr quantization is limited range
clamped to the range [-0.5&hellip;0.5]. The Yc'CbcCrc quantization is limited range.</para>
</section>
<section>
<title id="col-smpte-240m">Colorspace SMPTE 240M (<constant>V4L2_COLORSPACE_SMPTE240M</constant>)</title>
<section id="col-smpte-240m">
<title>Colorspace SMPTE 240M (<constant>V4L2_COLORSPACE_SMPTE240M</constant>)</title>
<para>The <xref linkend="smpte240m" /> standard was an interim standard used during the early days of HDTV (1988-1998).
It has been superseded by Rec. 709. The default Y'CbCr encoding is <constant>V4L2_YCBCR_ENC_SMPTE240M</constant>.
The default Y'CbCr quantization is limited range. The chromaticities of the primary colors and the
@ -1159,8 +1153,8 @@ following <constant>V4L2_YCBCR_ENC_SMPTE240M</constant> encoding:</term>
clamped to the range [-0.5&hellip;0.5]. The Y'CbCr quantization is limited range.</para>
</section>
<section>
<title id="col-sysm">Colorspace NTSC 1953 (<constant>V4L2_COLORSPACE_470_SYSTEM_M</constant>)</title>
<section id="col-sysm">
<title>Colorspace NTSC 1953 (<constant>V4L2_COLORSPACE_470_SYSTEM_M</constant>)</title>
<para>This standard defines the colorspace used by NTSC in 1953. In practice this
colorspace is obsolete and SMPTE 170M should be used instead. The default Y'CbCr encoding
is <constant>V4L2_YCBCR_ENC_601</constant>. The default Y'CbCr quantization is limited range.
@ -1237,8 +1231,8 @@ clamped to the range [-0.5&hellip;0.5]. The Y'CbCr quantization is limited range
This transform is identical to one defined in SMPTE 170M/BT.601.</para>
</section>
<section>
<title id="col-sysbg">Colorspace EBU Tech. 3213 (<constant>V4L2_COLORSPACE_470_SYSTEM_BG</constant>)</title>
<section id="col-sysbg">
<title>Colorspace EBU Tech. 3213 (<constant>V4L2_COLORSPACE_470_SYSTEM_BG</constant>)</title>
<para>The <xref linkend="tech3213" /> standard defines the colorspace used by PAL/SECAM in 1975. In practice this
colorspace is obsolete and SMPTE 170M should be used instead. The default Y'CbCr encoding
is <constant>V4L2_YCBCR_ENC_601</constant>. The default Y'CbCr quantization is limited range.
@ -1311,8 +1305,8 @@ clamped to the range [-0.5&hellip;0.5]. The Y'CbCr quantization is limited range
This transform is identical to one defined in SMPTE 170M/BT.601.</para>
</section>
<section>
<title id="col-jpeg">Colorspace JPEG (<constant>V4L2_COLORSPACE_JPEG</constant>)</title>
<section id="col-jpeg">
<title>Colorspace JPEG (<constant>V4L2_COLORSPACE_JPEG</constant>)</title>
<para>This colorspace defines the colorspace used by most (Motion-)JPEG formats. The chromaticities
of the primary colors and the white reference are identical to sRGB. The Y'CbCr encoding is
<constant>V4L2_YCBCR_ENC_601</constant> with full range quantization where

821
Documentation/DocBook/media/v4l/subdev-formats.xml
View file

@ -482,6 +482,36 @@ see <xref linkend="colorspaces" />.</entry>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-RBG888-1X24">
<entry>MEDIA_BUS_FMT_RBG888_1X24</entry>
<entry>0x100e</entry>
<entry></entry>
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<entry>r<subscript>7</subscript></entry>
<entry>r<subscript>6</subscript></entry>
<entry>r<subscript>5</subscript></entry>
<entry>r<subscript>4</subscript></entry>
<entry>r<subscript>3</subscript></entry>
<entry>r<subscript>2</subscript></entry>
<entry>r<subscript>1</subscript></entry>
<entry>r<subscript>0</subscript></entry>
<entry>b<subscript>7</subscript></entry>
<entry>b<subscript>6</subscript></entry>
<entry>b<subscript>5</subscript></entry>
<entry>b<subscript>4</subscript></entry>
<entry>b<subscript>3</subscript></entry>
<entry>b<subscript>2</subscript></entry>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
<entry>g<subscript>7</subscript></entry>
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<entry>MEDIA_BUS_FMT_RGB666_1X24_CPADHI</entry>
<entry>0x1015</entry>
@ -711,6 +741,43 @@ see <xref linkend="colorspaces" />.</entry>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-RGB888-1X32-PADHI">
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<entry>0x100f</entry>
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<entry>r<subscript>3</subscript></entry>
<entry>r<subscript>2</subscript></entry>
<entry>r<subscript>1</subscript></entry>
<entry>r<subscript>0</subscript></entry>
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<entry>g<subscript>6</subscript></entry>
<entry>g<subscript>5</subscript></entry>
<entry>g<subscript>4</subscript></entry>
<entry>g<subscript>3</subscript></entry>
<entry>g<subscript>2</subscript></entry>
<entry>g<subscript>1</subscript></entry>
<entry>g<subscript>0</subscript></entry>
<entry>b<subscript>7</subscript></entry>
<entry>b<subscript>6</subscript></entry>
<entry>b<subscript>5</subscript></entry>
<entry>b<subscript>4</subscript></entry>
<entry>b<subscript>3</subscript></entry>
<entry>b<subscript>2</subscript></entry>
<entry>b<subscript>1</subscript></entry>
<entry>b<subscript>0</subscript></entry>
</row>
</tbody>
</tgroup>
</table>
@ -2575,6 +2642,294 @@ see <xref linkend="colorspaces" />.</entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-UYVY12-2X12">
<entry>MEDIA_BUS_FMT_UYVY12_2X12</entry>
<entry>0x201c</entry>
<entry></entry>
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<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
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<entry></entry>
<entry></entry>
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<entry>y<subscript>11</subscript></entry>
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<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
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<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>v<subscript>11</subscript></entry>
<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
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<entry></entry>
<entry></entry>
<entry></entry>
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<entry>y<subscript>11</subscript></entry>
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<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
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<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
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<row>
<entry></entry>
<entry></entry>
<entry></entry>
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<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
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<entry></entry>
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<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
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<entry></entry>
<entry></entry>
<entry></entry>
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<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
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<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
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<row>
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<entry></entry>
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<entry>u<subscript>7</subscript></entry>
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<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
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<entry></entry>
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<entry>y<subscript>11</subscript></entry>
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<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
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<entry>y<subscript>0</subscript></entry>
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<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>v<subscript>11</subscript></entry>
<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
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<row id="MEDIA-BUS-FMT-YVYU12-2X12">
<entry>MEDIA_BUS_FMT_YVYU12_2X12</entry>
<entry>0x201f</entry>
<entry></entry>
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<entry>y<subscript>11</subscript></entry>
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<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
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</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>v<subscript>11</subscript></entry>
<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
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<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
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<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
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<row>
<entry></entry>
<entry></entry>
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<entry>u<subscript>11</subscript></entry>
<entry>u<subscript>10</subscript></entry>
<entry>u<subscript>9</subscript></entry>
<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-UYVY8-1X16">
<entry>MEDIA_BUS_FMT_UYVY8_1X16</entry>
<entry>0x200f</entry>
@ -3047,6 +3402,36 @@ see <xref linkend="colorspaces" />.</entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-VUY8-1X24">
<entry>MEDIA_BUS_FMT_VUY8_1X24</entry>
<entry>0x201a</entry>
<entry></entry>
&dash-ent-8;
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-YUV8-1X24">
<entry>MEDIA_BUS_FMT_YUV8_1X24</entry>
<entry>0x2025</entry>
@ -3084,368 +3469,6 @@ see <xref linkend="colorspaces" />.</entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-YUV10-1X30">
<entry>MEDIA_BUS_FMT_YUV10_1X30</entry>
<entry>0x2016</entry>
<entry></entry>
<entry>-</entry>
<entry>-</entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
<entry>u<subscript>9</subscript></entry>
<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-AYUV8-1X32">
<entry>MEDIA_BUS_FMT_AYUV8_1X32</entry>
<entry>0x2017</entry>
<entry></entry>
<entry>a<subscript>7</subscript></entry>
<entry>a<subscript>6</subscript></entry>
<entry>a<subscript>5</subscript></entry>
<entry>a<subscript>4</subscript></entry>
<entry>a<subscript>3</subscript></entry>
<entry>a<subscript>2</subscript></entry>
<entry>a<subscript>1</subscript></entry>
<entry>a<subscript>0</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-UYVY12-2X12">
<entry>MEDIA_BUS_FMT_UYVY12_2X12</entry>
<entry>0x201c</entry>
<entry></entry>
&dash-ent-20;
<entry>u<subscript>11</subscript></entry>
<entry>u<subscript>10</subscript></entry>
<entry>u<subscript>9</subscript></entry>
<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>v<subscript>11</subscript></entry>
<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-VYUY12-2X12">
<entry>MEDIA_BUS_FMT_VYUY12_2X12</entry>
<entry>0x201d</entry>
<entry></entry>
&dash-ent-20;
<entry>v<subscript>11</subscript></entry>
<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>u<subscript>11</subscript></entry>
<entry>u<subscript>10</subscript></entry>
<entry>u<subscript>9</subscript></entry>
<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-YUYV12-2X12">
<entry>MEDIA_BUS_FMT_YUYV12_2X12</entry>
<entry>0x201e</entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>u<subscript>11</subscript></entry>
<entry>u<subscript>10</subscript></entry>
<entry>u<subscript>9</subscript></entry>
<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>v<subscript>11</subscript></entry>
<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-YVYU12-2X12">
<entry>MEDIA_BUS_FMT_YVYU12_2X12</entry>
<entry>0x201f</entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>v<subscript>11</subscript></entry>
<entry>v<subscript>10</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>y<subscript>11</subscript></entry>
<entry>y<subscript>10</subscript></entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
</row>
<row>
<entry></entry>
<entry></entry>
<entry></entry>
&dash-ent-20;
<entry>u<subscript>11</subscript></entry>
<entry>u<subscript>10</subscript></entry>
<entry>u<subscript>9</subscript></entry>
<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-UYVY12-1X24">
<entry>MEDIA_BUS_FMT_UYVY12_1X24</entry>
<entry>0x2020</entry>
@ -3686,6 +3709,80 @@ see <xref linkend="colorspaces" />.</entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-YUV10-1X30">
<entry>MEDIA_BUS_FMT_YUV10_1X30</entry>
<entry>0x2016</entry>
<entry></entry>
<entry>-</entry>
<entry>-</entry>
<entry>y<subscript>9</subscript></entry>
<entry>y<subscript>8</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
<entry>u<subscript>9</subscript></entry>
<entry>u<subscript>8</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
<entry>v<subscript>9</subscript></entry>
<entry>v<subscript>8</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
<row id="MEDIA-BUS-FMT-AYUV8-1X32">
<entry>MEDIA_BUS_FMT_AYUV8_1X32</entry>
<entry>0x2017</entry>
<entry></entry>
<entry>a<subscript>7</subscript></entry>
<entry>a<subscript>6</subscript></entry>
<entry>a<subscript>5</subscript></entry>
<entry>a<subscript>4</subscript></entry>
<entry>a<subscript>3</subscript></entry>
<entry>a<subscript>2</subscript></entry>
<entry>a<subscript>1</subscript></entry>
<entry>a<subscript>0</subscript></entry>
<entry>y<subscript>7</subscript></entry>
<entry>y<subscript>6</subscript></entry>
<entry>y<subscript>5</subscript></entry>
<entry>y<subscript>4</subscript></entry>
<entry>y<subscript>3</subscript></entry>
<entry>y<subscript>2</subscript></entry>
<entry>y<subscript>1</subscript></entry>
<entry>y<subscript>0</subscript></entry>
<entry>u<subscript>7</subscript></entry>
<entry>u<subscript>6</subscript></entry>
<entry>u<subscript>5</subscript></entry>
<entry>u<subscript>4</subscript></entry>
<entry>u<subscript>3</subscript></entry>
<entry>u<subscript>2</subscript></entry>
<entry>u<subscript>1</subscript></entry>
<entry>u<subscript>0</subscript></entry>
<entry>v<subscript>7</subscript></entry>
<entry>v<subscript>6</subscript></entry>
<entry>v<subscript>5</subscript></entry>
<entry>v<subscript>4</subscript></entry>
<entry>v<subscript>3</subscript></entry>
<entry>v<subscript>2</subscript></entry>
<entry>v<subscript>1</subscript></entry>
<entry>v<subscript>0</subscript></entry>
</row>
</tbody>
</tgroup>
</table>

9
Documentation/DocBook/media/v4l/v4l2.xml
View file

@ -136,6 +136,7 @@ Remote Controller chapter.</contrib>
<year>2012</year>
<year>2013</year>
<year>2014</year>
<year>2015</year>
<holder>Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin
Rubli, Andy Walls, Muralidharan Karicheri, Mauro Carvalho Chehab,
Pawel Osciak</holder>
@ -151,6 +152,14 @@ structs, ioctls) must be noted in more detail in the history chapter
(compat.xml), along with the possible impact on existing drivers and
applications. -->
<revision>
<revnumber>3.21</revnumber>
<date>2015-02-13</date>
<authorinitials>mcc</authorinitials>
<revremark>Fix documentation for media controller device nodes and add support for DVB device nodes.
Add support for Tuner sub-device.
</revremark>
</revision>
<revision>
<revnumber>3.19</revnumber>
<date>2014-12-05</date>

9
Documentation/DocBook/media/v4l/vidioc-cropcap.xml
View file

@ -59,6 +59,11 @@ constant except when switching the video standard. Remember this
switch can occur implicit when switching the video input or
output.</para>
<para>Do not use the multiplanar buffer types. Use <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>
instead of <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>
and use <constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> instead of
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>.</para>
<para>This ioctl must be implemented for video capture or output devices that
support cropping and/or scaling and/or have non-square pixels, and for overlay devices.</para>
@ -73,9 +78,7 @@ support cropping and/or scaling and/or have non-square pixels, and for overlay d
<entry>Type of the data stream, set by the application.
Only these types are valid here:
<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>,
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant> and
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> and
<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>. See <xref linkend="v4l2-buf-type" />.</entry>
</row>
<row>

121
Documentation/DocBook/media/v4l/vidioc-dqevent.xml
View file

@ -64,7 +64,7 @@
<entry>__u32</entry>
<entry><structfield>type</structfield></entry>
<entry></entry>
<entry>Type of the event.</entry>
<entry>Type of the event, see <xref linkend="event-type" />.</entry>
</row>
<row>
<entry>union</entry>
@ -154,6 +154,113 @@
</tgroup>
</table>
<table frame="none" pgwide="1" id="event-type">
<title>Event Types</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
<row>
<entry><constant>V4L2_EVENT_ALL</constant></entry>
<entry>0</entry>
<entry>All events. V4L2_EVENT_ALL is valid only for
VIDIOC_UNSUBSCRIBE_EVENT for unsubscribing all events at once.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_VSYNC</constant></entry>
<entry>1</entry>
<entry>This event is triggered on the vertical sync.
This event has a &v4l2-event-vsync; associated with it.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_EOS</constant></entry>
<entry>2</entry>
<entry>This event is triggered when the end of a stream is reached.
This is typically used with MPEG decoders to report to the application
when the last of the MPEG stream has been decoded.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_CTRL</constant></entry>
<entry>3</entry>
<entry><para>This event requires that the <structfield>id</structfield>
matches the control ID from which you want to receive events.
This event is triggered if the control's value changes, if a
button control is pressed or if the control's flags change.
This event has a &v4l2-event-ctrl; associated with it. This struct
contains much of the same information as &v4l2-queryctrl; and
&v4l2-control;.</para>
<para>If the event is generated due to a call to &VIDIOC-S-CTRL; or
&VIDIOC-S-EXT-CTRLS;, then the event will <emphasis>not</emphasis> be sent to
the file handle that called the ioctl function. This prevents
nasty feedback loops. If you <emphasis>do</emphasis> want to get the
event, then set the <constant>V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK</constant>
flag.
</para>
<para>This event type will ensure that no information is lost when
more events are raised than there is room internally. In that
case the &v4l2-event-ctrl; of the second-oldest event is kept,
but the <structfield>changes</structfield> field of the
second-oldest event is ORed with the <structfield>changes</structfield>
field of the oldest event.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_FRAME_SYNC</constant></entry>
<entry>4</entry>
<entry>
<para>Triggered immediately when the reception of a
frame has begun. This event has a
&v4l2-event-frame-sync; associated with it.</para>
<para>If the hardware needs to be stopped in the case of a
buffer underrun it might not be able to generate this event.
In such cases the <structfield>frame_sequence</structfield>
field in &v4l2-event-frame-sync; will not be incremented. This
causes two consecutive frame sequence numbers to have n times
frame interval in between them.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_SOURCE_CHANGE</constant></entry>
<entry>5</entry>
<entry>
<para>This event is triggered when a source parameter change is
detected during runtime by the video device. It can be a
runtime resolution change triggered by a video decoder or the
format change happening on an input connector.
This event requires that the <structfield>id</structfield>
matches the input index (when used with a video device node)
or the pad index (when used with a subdevice node) from which
you want to receive events.</para>
<para>This event has a &v4l2-event-src-change; associated
with it. The <structfield>changes</structfield> bitfield denotes
what has changed for the subscribed pad. If multiple events
occurred before application could dequeue them, then the changes
will have the ORed value of all the events generated.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_MOTION_DET</constant></entry>
<entry>6</entry>
<entry>
<para>Triggered whenever the motion detection state for one or more of the regions
changes. This event has a &v4l2-event-motion-det; associated with it.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry>
<entry>0x08000000</entry>
<entry>Base event number for driver-private events.</entry>
</row>
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="v4l2-event-vsync">
<title>struct <structname>v4l2_event_vsync</structname></title>
<tgroup cols="3">
@ -177,7 +284,7 @@
<entry>__u32</entry>
<entry><structfield>changes</structfield></entry>
<entry></entry>
<entry>A bitmask that tells what has changed. See <xref linkend="changes-flags" />.</entry>
<entry>A bitmask that tells what has changed. See <xref linkend="ctrl-changes-flags" />.</entry>
</row>
<row>
<entry>__u32</entry>
@ -309,8 +416,8 @@
</tgroup>
</table>
<table pgwide="1" frame="none" id="changes-flags">
<title>Changes</title>
<table pgwide="1" frame="none" id="ctrl-changes-flags">
<title>Control Changes</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
@ -318,9 +425,9 @@
<entry><constant>V4L2_EVENT_CTRL_CH_VALUE</constant></entry>
<entry>0x0001</entry>
<entry>This control event was triggered because the value of the control
changed. Special case: if a button control is pressed, then this
event is sent as well, even though there is not explicit value
associated with a button control.</entry>
changed. Special cases: Volatile controls do no generate this event;
If a control has the <constant>V4L2_CTRL_FLAG_EXECUTE_ON_WRITE</constant>
flag set, then this event is sent as well, regardless its value.</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_CTRL_CH_FLAGS</constant></entry>

5
Documentation/DocBook/media/v4l/vidioc-g-crop.xml
View file

@ -70,6 +70,11 @@ structure or returns the &EINVAL; if cropping is not supported.</para>
<constant>VIDIOC_S_CROP</constant> ioctl with a pointer to this
structure.</para>
<para>Do not use the multiplanar buffer types. Use <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>
instead of <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>
and use <constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> instead of
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>.</para>
<para>The driver first adjusts the requested dimensions against
hardware limits, &ie; the bounds given by the capture/output window,
and it rounds to the closest possible values of horizontal and

18
Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
View file

@ -318,10 +318,20 @@ can't generate such frequencies, then the flag will also be cleared.
</row>
<row>
<entry>V4L2_DV_FL_HALF_LINE</entry>
<entry>Specific to interlaced formats: if set, then field 1 (aka the odd field)
is really one half-line longer and field 2 (aka the even field) is really one half-line
shorter, so each field has exactly the same number of half-lines. Whether half-lines can be
detected or used depends on the hardware.
<entry>Specific to interlaced formats: if set, then the vertical frontporch
of field 1 (aka the odd field) is really one half-line longer and the vertical backporch
of field 2 (aka the even field) is really one half-line shorter, so each field has exactly
the same number of half-lines. Whether half-lines can be detected or used depends on
the hardware.
</entry>
</row>
<row>
<entry>V4L2_DV_FL_IS_CE_VIDEO</entry>
<entry>If set, then this is a Consumer Electronics (CE) video format.
Such formats differ from other formats (commonly called IT formats) in that if
R'G'B' encoding is used then by default the R'G'B' values use limited range
(i.e. 16-235) as opposed to full range (i.e. 0-255). All formats defined in CEA-861
except for the 640x480p59.94 format are CE formats.
</entry>
</row>
</tbody>

4
Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
View file

@ -240,9 +240,9 @@ where padding bytes after the last line of an image cross a system
page boundary. Capture devices may write padding bytes, the value is
undefined. Output devices ignore the contents of padding
bytes.</para><para>When the image format is planar the
<structfield>bytesperline</structfield> value applies to the largest
<structfield>bytesperline</structfield> value applies to the first
plane and is divided by the same factor as the
<structfield>width</structfield> field for any smaller planes. For
<structfield>width</structfield> field for the other planes. For
example the Cb and Cr planes of a YUV 4:2:0 image have half as many
padding bytes following each line as the Y plane. To avoid ambiguities
drivers must return a <structfield>bytesperline</structfield> value

4
Documentation/DocBook/media/v4l/vidioc-g-selection.xml
View file

@ -60,8 +60,8 @@
<para>To query the cropping (composing) rectangle set &v4l2-selection;
<structfield> type </structfield> field to the respective buffer type.
Do not use multiplanar buffers. Use <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>
instead of <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>. Use
Do not use the multiplanar buffer types. Use <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>
instead of <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant> and use
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> instead of
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>. The next step is
setting the value of &v4l2-selection; <structfield>target</structfield> field

8
Documentation/DocBook/media/v4l/vidioc-querycap.xml
View file

@ -102,10 +102,10 @@ The bus_info must start with "PCI:" for PCI boards, "PCIe:" for PCI Express boar
<entry>__u32</entry>
<entry><structfield>version</structfield></entry>
<entry><para>Version number of the driver.</para>
<para>Starting on kernel 3.1, the version reported is provided per
V4L2 subsystem, following the same Kernel numberation scheme. However, it
should not always return the same version as the kernel, if, for example,
an stable or distribution-modified kernel uses the V4L2 stack from a
<para>Starting with kernel 3.1, the version reported is provided by the
V4L2 subsystem following the kernel numbering scheme. However, it
may not always return the same version as the kernel if, for example,
a stable or distribution-modified kernel uses the V4L2 stack from a
newer kernel.</para>
<para>The version number is formatted using the
<constant>KERNEL_VERSION()</constant> macro:</para></entry>

12
Documentation/DocBook/media/v4l/vidioc-queryctrl.xml
View file

@ -600,7 +600,9 @@ writing a value will cause the device to carry out a given action
changes continuously. A typical example would be the current gain value if the device
is in auto-gain mode. In such a case the hardware calculates the gain value based on
the lighting conditions which can change over time. Note that setting a new value for
a volatile control will have no effect. The new value will just be ignored.</entry>
a volatile control will have no effect and no <constant>V4L2_EVENT_CTRL_CH_VALUE</constant>
will be sent, unless the <constant>V4L2_CTRL_FLAG_EXECUTE_ON_WRITE</constant> flag
(see below) is also set. Otherwise the new value will just be ignored.</entry>
</row>
<row>
<entry><constant>V4L2_CTRL_FLAG_HAS_PAYLOAD</constant></entry>
@ -610,6 +612,14 @@ using one of the pointer fields of &v4l2-ext-control;. This flag is set for cont
that are an array, string, or have a compound type. In all cases you have to set a
pointer to memory containing the payload of the control.</entry>
</row>
<row>
<entry><constant>V4L2_CTRL_FLAG_EXECUTE_ON_WRITE</constant></entry>
<entry>0x0200</entry>
<entry>The value provided to the control will be propagated to the driver
even if remains constant. This is required when the control represents an action
on the hardware. For example: clearing an error flag or triggering the flash. All the
controls of the type <constant>V4L2_CTRL_TYPE_BUTTON</constant> have this flag set.</entry>
</row>
</tbody>
</tgroup>
</table>

13
Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-interval.xml
View file

@ -67,9 +67,9 @@
<para>To enumerate frame intervals applications initialize the
<structfield>index</structfield>, <structfield>pad</structfield>,
<structfield>code</structfield>, <structfield>width</structfield> and
<structfield>height</structfield> fields of
&v4l2-subdev-frame-interval-enum; and call the
<structfield>which</structfield>, <structfield>code</structfield>,
<structfield>width</structfield> and <structfield>height</structfield>
fields of &v4l2-subdev-frame-interval-enum; and call the
<constant>VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL</constant> ioctl with a pointer
to this structure. Drivers fill the rest of the structure or return
an &EINVAL; if one of the input fields is invalid. All frame intervals are
@ -123,7 +123,12 @@
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[9]</entry>
<entry><structfield>which</structfield></entry>
<entry>Frame intervals to be enumerated, from &v4l2-subdev-format-whence;.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[8]</entry>
<entry>Reserved for future extensions. Applications and drivers must
set the array to zero.</entry>
</row>

13
Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-size.xml
View file

@ -61,9 +61,9 @@
ioctl.</para>
<para>To enumerate frame sizes applications initialize the
<structfield>pad</structfield>, <structfield>code</structfield> and
<structfield>index</structfield> fields of the
&v4l2-subdev-mbus-code-enum; and call the
<structfield>pad</structfield>, <structfield>which</structfield> ,
<structfield>code</structfield> and <structfield>index</structfield>
fields of the &v4l2-subdev-mbus-code-enum; and call the
<constant>VIDIOC_SUBDEV_ENUM_FRAME_SIZE</constant> ioctl with a pointer to
the structure. Drivers fill the minimum and maximum frame sizes or return
an &EINVAL; if one of the input parameters is invalid.</para>
@ -127,7 +127,12 @@
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[9]</entry>
<entry><structfield>which</structfield></entry>
<entry>Frame sizes to be enumerated, from &v4l2-subdev-format-whence;.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[8]</entry>
<entry>Reserved for future extensions. Applications and drivers must
set the array to zero.</entry>
</row>

11
Documentation/DocBook/media/v4l/vidioc-subdev-enum-mbus-code.xml
View file

@ -56,8 +56,8 @@
</note>
<para>To enumerate media bus formats available at a given sub-device pad
applications initialize the <structfield>pad</structfield> and
<structfield>index</structfield> fields of &v4l2-subdev-mbus-code-enum; and
applications initialize the <structfield>pad</structfield>, <structfield>which</structfield>
and <structfield>index</structfield> fields of &v4l2-subdev-mbus-code-enum; and
call the <constant>VIDIOC_SUBDEV_ENUM_MBUS_CODE</constant> ioctl with a
pointer to this structure. Drivers fill the rest of the structure or return
an &EINVAL; if either the <structfield>pad</structfield> or
@ -93,7 +93,12 @@
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[9]</entry>
<entry><structfield>which</structfield></entry>
<entry>Media bus format codes to be enumerated, from &v4l2-subdev-format-whence;.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[8]</entry>
<entry>Reserved for future extensions. Applications and drivers must
set the array to zero.</entry>
</row>

111
Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml
View file

@ -60,7 +60,9 @@
<row>
<entry>__u32</entry>
<entry><structfield>type</structfield></entry>
<entry>Type of the event.</entry>
<entry>Type of the event, see <xref linkend="event-type" />. Note that
<constant>V4L2_EVENT_ALL</constant> can be used with VIDIOC_UNSUBSCRIBE_EVENT
for unsubscribing all events at once.</entry>
</row>
<row>
<entry>__u32</entry>
@ -84,113 +86,6 @@
</tgroup>
</table>
<table frame="none" pgwide="1" id="event-type">
<title>Event Types</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
<row>
<entry><constant>V4L2_EVENT_ALL</constant></entry>
<entry>0</entry>
<entry>All events. V4L2_EVENT_ALL is valid only for
VIDIOC_UNSUBSCRIBE_EVENT for unsubscribing all events at once.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_VSYNC</constant></entry>
<entry>1</entry>
<entry>This event is triggered on the vertical sync.
This event has a &v4l2-event-vsync; associated with it.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_EOS</constant></entry>
<entry>2</entry>
<entry>This event is triggered when the end of a stream is reached.
This is typically used with MPEG decoders to report to the application
when the last of the MPEG stream has been decoded.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_CTRL</constant></entry>
<entry>3</entry>
<entry><para>This event requires that the <structfield>id</structfield>
matches the control ID from which you want to receive events.
This event is triggered if the control's value changes, if a
button control is pressed or if the control's flags change.
This event has a &v4l2-event-ctrl; associated with it. This struct
contains much of the same information as &v4l2-queryctrl; and
&v4l2-control;.</para>
<para>If the event is generated due to a call to &VIDIOC-S-CTRL; or
&VIDIOC-S-EXT-CTRLS;, then the event will <emphasis>not</emphasis> be sent to
the file handle that called the ioctl function. This prevents
nasty feedback loops. If you <emphasis>do</emphasis> want to get the
event, then set the <constant>V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK</constant>
flag.
</para>
<para>This event type will ensure that no information is lost when
more events are raised than there is room internally. In that
case the &v4l2-event-ctrl; of the second-oldest event is kept,
but the <structfield>changes</structfield> field of the
second-oldest event is ORed with the <structfield>changes</structfield>
field of the oldest event.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_FRAME_SYNC</constant></entry>
<entry>4</entry>
<entry>
<para>Triggered immediately when the reception of a
frame has begun. This event has a
&v4l2-event-frame-sync; associated with it.</para>
<para>If the hardware needs to be stopped in the case of a
buffer underrun it might not be able to generate this event.
In such cases the <structfield>frame_sequence</structfield>
field in &v4l2-event-frame-sync; will not be incremented. This
causes two consecutive frame sequence numbers to have n times
frame interval in between them.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_SOURCE_CHANGE</constant></entry>
<entry>5</entry>
<entry>
<para>This event is triggered when a source parameter change is
detected during runtime by the video device. It can be a
runtime resolution change triggered by a video decoder or the
format change happening on an input connector.
This event requires that the <structfield>id</structfield>
matches the input index (when used with a video device node)
or the pad index (when used with a subdevice node) from which
you want to receive events.</para>
<para>This event has a &v4l2-event-src-change; associated
with it. The <structfield>changes</structfield> bitfield denotes
what has changed for the subscribed pad. If multiple events
occurred before application could dequeue them, then the changes
will have the ORed value of all the events generated.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_MOTION_DET</constant></entry>
<entry>6</entry>
<entry>
<para>Triggered whenever the motion detection state for one or more of the regions
changes. This event has a &v4l2-event-motion-det; associated with it.</para>
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry>
<entry>0x08000000</entry>
<entry>Base event number for driver-private events.</entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="event-flags">
<title>Event Flags</title>
<tgroup cols="3">

2
Documentation/devicetree/bindings/media/exynos-jpeg-codec.txt
View file

@ -4,7 +4,7 @@ Required properties:
- compatible : should be one of:
"samsung,s5pv210-jpeg", "samsung,exynos4210-jpeg",
"samsung,exynos3250-jpeg";
"samsung,exynos3250-jpeg", "samsung,exynos5420-jpeg";
- reg : address and length of the JPEG codec IP register set;
- interrupts : specifies the JPEG codec IP interrupt;
- clock-names : should contain:

39
Documentation/devicetree/bindings/media/i2c/mt9v032.txt Normal file
View file

@ -0,0 +1,39 @@
* Aptina 1/3-Inch WVGA CMOS Digital Image Sensor
The Aptina MT9V032 is a 1/3-inch CMOS active pixel digital image sensor with
an active array size of 752H x 480V. It is programmable through a simple
two-wire serial interface.
Required Properties:
- compatible: value should be either one among the following
(a) "aptina,mt9v022" for MT9V022 color sensor
(b) "aptina,mt9v022m" for MT9V022 monochrome sensor
(c) "aptina,mt9v024" for MT9V024 color sensor
(d) "aptina,mt9v024m" for MT9V024 monochrome sensor
(e) "aptina,mt9v032" for MT9V032 color sensor
(f) "aptina,mt9v032m" for MT9V032 monochrome sensor
(g) "aptina,mt9v034" for MT9V034 color sensor
(h) "aptina,mt9v034m" for MT9V034 monochrome sensor
Optional Properties:
- link-frequencies: List of allowed link frequencies in Hz. Each frequency is
expressed as a 64-bit big-endian integer.
For further reading on port node refer to
Documentation/devicetree/bindings/media/video-interfaces.txt.
Example:
mt9v032@5c {
compatible = "aptina,mt9v032";
reg = <0x5c>;
port {
mt9v032_out: endpoint {
link-frequencies = /bits/ 64
<13000000 26600000 27000000>;
};
};
};

46
Documentation/devicetree/bindings/media/i2c/ov2640.txt Normal file
View file

@ -0,0 +1,46 @@
* Omnivision OV2640 CMOS sensor
The Omnivision OV2640 sensor support multiple resolutions output, such as
CIF, SVGA, UXGA. It also can support YUV422/420, RGB565/555 or raw RGB
output format.
Required Properties:
- compatible: should be "ovti,ov2640"
- clocks: reference to the xvclk input clock.
- clock-names: should be "xvclk".
Optional Properties:
- resetb-gpios: reference to the GPIO connected to the resetb pin, if any.
- pwdn-gpios: reference to the GPIO connected to the pwdn pin, if any.
The device node must contain one 'port' child node for its digital output
video port, in accordance with the video interface bindings defined in
Documentation/devicetree/bindings/media/video-interfaces.txt.
Example:
i2c1: i2c@f0018000 {
ov2640: camera@0x30 {
compatible = "ovti,ov2640";
reg = <0x30>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pck1 &pinctrl_ov2640_pwdn &pinctrl_ov2640_resetb>;
resetb-gpios = <&pioE 24 GPIO_ACTIVE_LOW>;
pwdn-gpios = <&pioE 29 GPIO_ACTIVE_HIGH>;
clocks = <&pck1>;
clock-names = "xvclk";
assigned-clocks = <&pck1>;
assigned-clock-rates = <25000000>;
port {
ov2640_0: endpoint {
remote-endpoint = <&isi_0>;
bus-width = <8>;
};
};
};
};

38
Documentation/devicetree/bindings/media/i2c/ov2659.txt Normal file
View file

@ -0,0 +1,38 @@
* OV2659 1/5-Inch 2Mp SOC Camera
The Omnivision OV2659 is a 1/5-inch SOC camera, with an active array size of
1632H x 1212V. It is programmable through a SCCB. The OV2659 sensor supports
multiple resolutions output, such as UXGA, SVGA, 720p. It also can support
YUV422, RGB565/555 or raw RGB output formats.
Required Properties:
- compatible: Must be "ovti,ov2659"
- reg: I2C slave address
- clocks: reference to the xvclk input clock.
- clock-names: should be "xvclk".
- link-frequencies: target pixel clock frequency.
For further reading on port node refer to
Documentation/devicetree/bindings/media/video-interfaces.txt.
Example:
i2c0@1c22000 {
...
...
ov2659@30 {
compatible = "ovti,ov2659";
reg = <0x30>;
clocks = <&clk_ov2659 0>;
clock-names = "xvclk";
port {
ov2659_0: endpoint {
remote-endpoint = <&vpfe_ep>;
link-frequencies = /bits/ 64 <70000000>;
};
};
};
...
};

6
Documentation/devicetree/bindings/media/video-interfaces.txt
View file

@ -106,6 +106,12 @@ Optional endpoint properties
- link-frequencies: Allowed data bus frequencies. For MIPI CSI-2, for
instance, this is the actual frequency of the bus, not bits per clock per
lane value. An array of 64-bit unsigned integers.
- lane-polarities: an array of polarities of the lanes starting from the clock
lane and followed by the data lanes in the same order as in data-lanes.
Valid values are 0 (normal) and 1 (inverted). The length of the array
should be the combined length of data-lanes and clock-lanes properties.
If the lane-polarities property is omitted, the value must be interpreted
as 0 (normal). This property is valid for serial busses only.
Example

35
Documentation/devicetree/bindings/media/xilinx/video.txt Normal file
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@ -0,0 +1,35 @@
DT bindings for Xilinx video IP cores
-------------------------------------
Xilinx video IP cores process video streams by acting as video sinks and/or
sources. They are connected by links through their input and output ports,
creating a video pipeline.
Each video IP core is represented by an AMBA bus child node in the device
tree using bindings documented in this directory. Connections between the IP
cores are represented as defined in ../video-interfaces.txt.
The whole pipeline is represented by an AMBA bus child node in the device
tree using bindings documented in ./xlnx,video.txt.
Common properties
-----------------
The following properties are common to all Xilinx video IP cores.
- xlnx,video-format: This property represents a video format transmitted on an
AXI bus between video IP cores, using its VF code as defined in "AXI4-Stream
Video IP and System Design Guide" [UG934]. How the format relates to the IP
core is decribed in the IP core bindings documentation.
- xlnx,video-width: This property qualifies the video format with the sample
width expressed as a number of bits per pixel component. All components must
use the same width.
- xlnx,cfa-pattern: When the video format is set to Mono/Sensor, this property
describes the sensor's color filter array pattern. Supported values are
"bggr", "gbrg", "grbg", "rggb" and "mono". If not specified, the pattern
defaults to "mono".
[UG934] http://www.xilinx.com/support/documentation/ip_documentation/axi_videoip/v1_0/ug934_axi_videoIP.pdf

33
Documentation/devicetree/bindings/media/xilinx/xlnx,v-tc.txt Normal file
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@ -0,0 +1,33 @@
Xilinx Video Timing Controller (VTC)
------------------------------------
The Video Timing Controller is a general purpose video timing generator and
detector.
Required properties:
- compatible: Must be "xlnx,v-tc-6.1".
- reg: Physical base address and length of the registers set for the device.
- clocks: Must contain a clock specifier for the VTC core and timing
interfaces clock.
Optional properties:
- xlnx,detector: The VTC has a timing detector
- xlnx,generator: The VTC has a timing generator
At least one of the xlnx,detector and xlnx,generator properties must be
specified.
Example:
vtc: vtc@43c40000 {
compatible = "xlnx,v-tc-6.1";
reg = <0x43c40000 0x10000>;
clocks = <&clkc 15>;
xlnx,generator;
};

71
Documentation/devicetree/bindings/media/xilinx/xlnx,v-tpg.txt Normal file
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@ -0,0 +1,71 @@
Xilinx Video Test Pattern Generator (TPG)
-----------------------------------------
Required properties:
- compatible: Must contain at least one of
"xlnx,v-tpg-5.0" (TPG version 5.0)
"xlnx,v-tpg-6.0" (TPG version 6.0)
TPG versions backward-compatible with previous versions should list all
compatible versions in the newer to older order.
- reg: Physical base address and length of the registers set for the device.
- clocks: Reference to the video core clock.
- xlnx,video-format, xlnx,video-width: Video format and width, as defined in
video.txt.
- port: Video port, using the DT bindings defined in ../video-interfaces.txt.
The TPG has a single output port numbered 0.
Optional properties:
- xlnx,vtc: A phandle referencing the Video Timing Controller that generates
video timings for the TPG test patterns.
- timing-gpios: Specifier for a GPIO that controls the timing mux at the TPG
input. The GPIO active level corresponds to the selection of VTC-generated
video timings.
The xlnx,vtc and timing-gpios properties are mandatory when the TPG is
synthesized with two ports and forbidden when synthesized with one port.
Example:
tpg_0: tpg@40050000 {
compatible = "xlnx,v-tpg-6.0", "xlnx,v-tpg-5.0";
reg = <0x40050000 0x10000>;
clocks = <&clkc 15>;
xlnx,vtc = <&vtc_3>;
timing-gpios = <&ps7_gpio_0 55 GPIO_ACTIVE_LOW>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
xlnx,video-format = <XVIP_VF_YUV_422>;
xlnx,video-width = <8>;
tpg_in: endpoint {
remote-endpoint = <&adv7611_out>;
};
};
port@1 {
reg = <1>;
xlnx,video-format = <XVIP_VF_YUV_422>;
xlnx,video-width = <8>;
tpg1_out: endpoint {
remote-endpoint = <&switch_in0>;
};
}:
};
};

55
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@ -0,0 +1,55 @@
Xilinx Video IP Pipeline (VIPP)
-------------------------------
General concept
---------------
Xilinx video IP pipeline processes video streams through one or more Xilinx
video IP cores. Each video IP core is represented as documented in video.txt
and IP core specific documentation, xlnx,v-*.txt, in this directory. The DT
node of the VIPP represents as a top level node of the pipeline and defines
mappings between DMAs and the video IP cores.
Required properties:
- compatible: Must be "xlnx,video".
- dmas, dma-names: List of one DMA specifier and identifier string (as defined
in Documentation/devicetree/bindings/dma/dma.txt) per port. Each port
requires a DMA channel with the identifier string set to "port" followed by
the port index.
- ports: Video port, using the DT bindings defined in ../video-interfaces.txt.
Required port properties:
- direction: should be either "input" or "output" depending on the direction
of stream.
Example:
video_cap {
compatible = "xlnx,video";
dmas = <&vdma_1 1>, <&vdma_3 1>;
dma-names = "port0", "port1";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
direction = "input";
vcap0_in0: endpoint {
remote-endpoint = <&scaler0_out>;
};
};
port@1 {
reg = <1>;
direction = "input";
vcap0_in1: endpoint {
remote-endpoint = <&switch_out1>;
};
};
};
};

1
Documentation/devicetree/bindings/vendor-prefixes.txt
View file

@ -21,6 +21,7 @@ ampire Ampire Co., Ltd.
ams AMS AG
amstaos AMS-Taos Inc.
apm Applied Micro Circuits Corporation (APM)
aptina Aptina Imaging
arasan Arasan Chip Systems
arm ARM Ltd.
armadeus ARMadeus Systems SARL

4
Documentation/video4linux/v4l2-controls.txt
View file

@ -344,7 +344,9 @@ implement g_volatile_ctrl like this:
}
Note that you use the 'new value' union as well in g_volatile_ctrl. In general
controls that need to implement g_volatile_ctrl are read-only controls.
controls that need to implement g_volatile_ctrl are read-only controls. If they
are not, a V4L2_EVENT_CTRL_CH_VALUE will not be generated when the control
changes.
To mark a control as volatile you have to set V4L2_CTRL_FLAG_VOLATILE:

6
Documentation/video4linux/v4l2-framework.txt
View file

@ -793,8 +793,8 @@ video_register_device_no_warn() instead.
Whenever a device node is created some attributes are also created for you.
If you look in /sys/class/video4linux you see the devices. Go into e.g.
video0 and you will see 'name', 'debug' and 'index' attributes. The 'name'
attribute is the 'name' field of the video_device struct. The 'debug' attribute
video0 and you will see 'name', 'dev_debug' and 'index' attributes. The 'name'
attribute is the 'name' field of the video_device struct. The 'dev_debug' attribute
can be used to enable core debugging. See the next section for more detailed
information on this.
@ -821,7 +821,7 @@ unregister the device if the registration failed.
video device debugging
----------------------
The 'debug' attribute that is created for each video, vbi, radio or swradio
The 'dev_debug' attribute that is created for each video, vbi, radio or swradio
device in /sys/class/video4linux/<devX>/ allows you to enable logging of
file operations.

5
Documentation/video4linux/vivid.txt
View file

@ -912,6 +912,11 @@ looped to the video input provided that:
sequence and field counting in struct v4l2_buffer on the capture side may not
be 100% accurate.
- field settings V4L2_FIELD_SEQ_TB/BT are not supported. While it is possible to
implement this, it would mean a lot of work to get this right. Since these
field values are rarely used the decision was made not to implement this for
now.
- on the input side the "Standard Signal Mode" for the S-Video input or the
"DV Timings Signal Mode" for the HDMI input should be configured so that a
valid signal is passed to the video input.