linux-kernel - Re: [RFC v6 2/9] Documentation:DocBook:v4l: Update the controls.xml for TI FM driver

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Message-ID: <4CF8DF08.1000002@infradead.org>
Date:	Fri, 03 Dec 2010 10:14:00 -0200
From:	Mauro Carvalho Chehab <mchehab@...radead.org>
To:	manjunatha_halli@...com
CC:	hverkuil@...all.nl, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org
Subject: Re: [RFC v6 2/9] Documentation:DocBook:v4l: Update the controls.xml
 for TI FM driver

Em 03-12-2010 10:50, manjunatha_halli@...com escreveu:
> From: Manjunatha Halli <manjunatha_halli@...com>
> 
> Added entries for following 2 new CID's which are added for TI FM
> driver:
> - V4L2_CID_RSSI_THRESHOLD
> - V4L2_CID_TUNE_AF
> 
> Signed-off-by: Manjunatha Halli <manjunatha_halli@...com>
> ---
>  Documentation/DocBook/v4l/controls.xml |   12 ++++++++++++
>  1 files changed, 12 insertions(+), 0 deletions(-)
> 
> diff --git a/Documentation/DocBook/v4l/controls.xml b/Documentation/DocBook/v4l/controls.xml
> index 2fae3e8..b560953 100644
> --- a/Documentation/DocBook/v4l/controls.xml
> +++ b/Documentation/DocBook/v4l/controls.xml
> @@ -132,6 +132,18 @@ consumption state.</entry>
>  	    <entry>Loudness mode (bass boost).</entry>
>  	  </row>
>  	  <row>
> +           <entry><constant>V4L2_CID_RSSI_THRESHOLD</constant></entry>
> +           <entry>integer</entry>
> +           <entry>Set RSSI threshold level. Change the default threshold
> +level used to select valid frequencies during vidioc_s_hw_freq_seek.</entry>
> +         </row>
> +         <row>
> +           <entry><constant>V4L2_CID_TUNE_AF</constant></entry>
> +           <entry>integer</entry>
> +           <entry>Set Alternative Frequency mode. Enable or disable
> +alternative frequency mode.</entry>
> +         </row>
> +         <row>
>  	    <entry><constant>V4L2_CID_BLACK_LEVEL</constant></entry>
>  	    <entry>integer</entry>
>  	    <entry>Another name for brightness (not a synonym of

Sorry, but, I doubt that any userspace application developer will find those descriptions
useful. 

For the threshold: I understand that this is the carrier strength used to detect a
channel, right? If so, please improve the description.
Also, The better is to associate its scale to a carrier level in some unit like dB.

The second control means absolutely nothing... It is not a boolean value, and what
is "alternative" frequency mode?

Cheers,
Mauro.

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