Re: [PATCH v4 5/5] Documentation: v4l: Add hw_seek spacing.

[Mauro Carvalho Chehab <mchehab@redhat.com>]

Em 04-06-2010 07:34, Matti J. Aaltonen escreveu:
> Add a couple of words about the spacing field in HW seek struct.
> 
> Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
> ---
>  .../DocBook/v4l/vidioc-s-hw-freq-seek.xml          |   10 ++++++++--
>  1 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml b/Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml
> index 14b3ec7..8ee614c 100644
> --- a/Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml
> +++ b/Documentation/DocBook/v4l/vidioc-s-hw-freq-seek.xml
> @@ -51,7 +51,8 @@
>  
>      <para>Start a hardware frequency seek from the current frequency.
>  To do this applications initialize the <structfield>tuner</structfield>,
> -<structfield>type</structfield>, <structfield>seek_upward</structfield> and
> +<structfield>type</structfield>, <structfield>seek_upward</structfield>,
> +<structfield>spacing</structfield> and
>  <structfield>wrap_around</structfield> fields, and zero out the
>  <structfield>reserved</structfield> array of a &v4l2-hw-freq-seek; and
>  call the <constant>VIDIOC_S_HW_FREQ_SEEK</constant> ioctl with a pointer
> @@ -89,7 +90,12 @@ field and the &v4l2-tuner; <structfield>index</structfield> field.</entry>
>  	  </row>
>  	  <row>
>  	    <entry>__u32</entry>
> -	    <entry><structfield>reserved</structfield>[8]</entry>
> +	    <entry><structfield>spacing</structfield></entry>
> +	    <entry>If non-zero, gives the search resolution to be used in hardware scan. The driver selects the nearest value that is supported by the hardware. If spacing is zero use a reasonable default value.</entry>

What's the unit for spacing?

> +	  </row>
> +	  <row>
> +	    <entry>__u32</entry>
> +	    <entry><structfield>reserved</structfield>[7]</entry>
>  	    <entry>Reserved for future extensions. Drivers and
>  	    applications must set the array to zero.</entry>
>  	  </row>