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Commit c7c1d5a5 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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[media] DocBook: add SDR specific info to G_MODULATOR / S_MODULATOR 



Add SDR specific notes to G_MODULATOR / S_MODULATOR documentation.

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
[hans.verkuil@cisco.com: add quotes in "The term 'modulator'"]
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent f9b4376c

Documentation/DocBook/media/v4l/vidioc-g-modulator.xml

+6 −0
Original line number Diff line number Diff line
@@ -78,6 +78,12 @@ different audio modulation if the request cannot be satisfied. However 
this is a write-only ioctl, it does not return the actual audio

modulation selected.</para>



    <para><link linkend="sdr">SDR</link> specific modulator types are

<constant>V4L2_TUNER_SDR</constant> and <constant>V4L2_TUNER_RF</constant>.

For SDR devices <structfield>txsubchans</structfield> field must be

initialized to zero.

The term 'modulator' means SDR transmitter in this context.</para>



    <para>To change the radio frequency the &VIDIOC-S-FREQUENCY; ioctl

is available.</para>