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[media] DocBook: V4L: add V4L2_SDR_FMT_CS14LE - 'CS14'

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V4L2_SDR_FMT_CS14LE is complex signed 14-bit sample format, used
for software defined radio devices.

[m.chehab@samsung.com: remove V4L2_FL_USE_FH_PRIO setting to avoid
 compilation breakage, as this flag doesn't exist anymore]

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antti Palosaari 2014-07-11 17:04:42 -03:00 committed by Mauro Carvalho Chehab
parent 5c5be57004
commit 565092c6cd
3 changed files with 48 additions and 1 deletions
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47
Documentation/DocBook/media/v4l/pixfmt-sdr-cs14le.xml Normal file
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@ -0,0 +1,47 @@
<refentry id="V4L2-SDR-FMT-CS14LE">
<refmeta>
<refentrytitle>V4L2_SDR_FMT_CS14LE ('CS14')</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname>
<constant>V4L2_SDR_FMT_CS14LE</constant>
</refname>
<refpurpose>Complex signed 14-bit little endian IQ sample</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
This format contains sequence of complex number samples. Each complex number
consist two parts, called In-phase and Quadrature (IQ). Both I and Q are
represented as a 14 bit signed little endian number. I value comes first
and Q value after that. 14 bit value is stored in 16 bit space with unused
high bits padded with 0.
</para>
<example>
<title><constant>V4L2_SDR_FMT_CS14LE</constant> 1 sample</title>
<formalpara>
<title>Byte Order.</title>
<para>Each cell is one byte.
<informaltable frame="none">
<tgroup cols="3" align="center">
<colspec align="left" colwidth="2*" />
<tbody valign="top">
<row>
<entry>start&nbsp;+&nbsp;0:</entry>
<entry>I'<subscript>0[7:0]</subscript></entry>
<entry>I'<subscript>0[13:8]</subscript></entry>
</row>
<row>
<entry>start&nbsp;+&nbsp;2:</entry>
<entry>Q'<subscript>0[7:0]</subscript></entry>
<entry>Q'<subscript>0[13:8]</subscript></entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</formalpara>
</example>
</refsect1>
</refentry>

1
Documentation/DocBook/media/v4l/pixfmt.xml
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@ -860,6 +860,7 @@ interface only.</para>
&sub-sdr-cu08;
&sub-sdr-cu16le;
&sub-sdr-cs08;
&sub-sdr-cs14le;
&sub-sdr-ru12le;
</section>

1
drivers/staging/media/airspy/airspy.c
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@ -1039,7 +1039,6 @@ static int airspy_probe(struct usb_interface *intf,
s->vdev = airspy_template;
s->vdev.queue = &s->vb_queue;
s->vdev.queue->lock = &s->vb_queue_lock;
set_bit(V4L2_FL_USE_FH_PRIO, &s->vdev.flags);
video_set_drvdata(&s->vdev, s);
/* Register the v4l2_device structure */