On 01/30/2014 04:02 AM, Antti Palosaari wrote: > Add documentation for LNA, mixer and IF gain controls. These > controls are RF tuner specific. > > Cc: Hans Verkuil <hverkuil@xxxxxxxxx> Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx> Regards, Hans > Signed-off-by: Antti Palosaari <crope@xxxxxx> > --- > Documentation/DocBook/media/v4l/controls.xml | 91 ++++++++++++++++++++++++++++ > 1 file changed, 91 insertions(+) > > diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml > index a5a3188..0145341 100644 > --- a/Documentation/DocBook/media/v4l/controls.xml > +++ b/Documentation/DocBook/media/v4l/controls.xml > @@ -4971,4 +4971,95 @@ defines possible values for de-emphasis. Here they are:</entry> > </table> > > </section> > + > + <section id="rf-tuner-controls"> > + <title>RF Tuner Control Reference</title> > + > + <para>The RF Tuner (RF_TUNER) class includes controls for common features > +of devices having RF tuner.</para> > + > + <table pgwide="1" frame="none" id="rf-tuner-control-id"> > + <title>RF_TUNER Control IDs</title> > + > + <tgroup cols="4"> > + <colspec colname="c1" colwidth="1*" /> > + <colspec colname="c2" colwidth="6*" /> > + <colspec colname="c3" colwidth="2*" /> > + <colspec colname="c4" colwidth="6*" /> > + <spanspec namest="c1" nameend="c2" spanname="id" /> > + <spanspec namest="c2" nameend="c4" spanname="descr" /> > + <thead> > + <row> > + <entry spanname="id" align="left">ID</entry> > + <entry align="left">Type</entry> > + </row> > + <row rowsep="1"> > + <entry spanname="descr" align="left">Description</entry> > + </row> > + </thead> > + <tbody valign="top"> > + <row><entry></entry></row> > + <row> > + <entry spanname="id"><constant>V4L2_CID_RF_TUNER_CLASS</constant> </entry> > + <entry>class</entry> > + </row><row><entry spanname="descr">The RF_TUNER class > +descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a > +description of this control class.</entry> > + </row> > + <row> > + <entry spanname="id"><constant>V4L2_CID_LNA_GAIN_AUTO</constant> </entry> > + <entry>boolean</entry> > + </row> > + <row> > + <entry spanname="descr">Enables/disables LNA automatic gain control (AGC)</entry> > + </row> > + <row> > + <entry spanname="id"><constant>V4L2_CID_MIXER_GAIN_AUTO</constant> </entry> > + <entry>boolean</entry> > + </row> > + <row> > + <entry spanname="descr">Enables/disables mixer automatic gain control (AGC)</entry> > + </row> > + <row> > + <entry spanname="id"><constant>V4L2_CID_IF_GAIN_AUTO</constant> </entry> > + <entry>boolean</entry> > + </row> > + <row> > + <entry spanname="descr">Enables/disables IF automatic gain control (AGC)</entry> > + </row> > + <row> > + <entry spanname="id"><constant>V4L2_CID_LNA_GAIN</constant> </entry> > + <entry>integer</entry> > + </row> > + <row> > + <entry spanname="descr">LNA (low noise amplifier) gain is first > +gain stage on the RF tuner signal path. It is located very close to tuner > +antenna input. Used when <constant>V4L2_CID_LNA_GAIN_AUTO</constant> is not set. > +The range and step are driver-specific.</entry> > + </row> > + <row> > + <entry spanname="id"><constant>V4L2_CID_MIXER_GAIN</constant> </entry> > + <entry>integer</entry> > + </row> > + <row> > + <entry spanname="descr">Mixer gain is second gain stage on the RF > +tuner signal path. It is located inside mixer block, where RF signal is > +down-converted by the mixer. Used when <constant>V4L2_CID_MIXER_GAIN_AUTO</constant> > +is not set. The range and step are driver-specific.</entry> > + </row> > + <row> > + <entry spanname="id"><constant>V4L2_CID_IF_GAIN</constant> </entry> > + <entry>integer</entry> > + </row> > + <row> > + <entry spanname="descr">IF gain is last gain stage on the RF tuner > +signal path. It is located on output of RF tuner. It controls signal level of > +intermediate frequency output or baseband output. Used when > +<constant>V4L2_CID_IF_GAIN_AUTO</constant> is not set. The range and step are > +driver-specific.</entry> > + </row> > + </tbody> > + </tgroup> > + </table> > + </section> > </section> > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
