[alsa-devel] modifying VIA8237.conf - does it currently work correctly for somebody?

[Takashi Iwai]

At Wed, 27 Aug 2008 15:23:10 -0700,
John L. Utz III wrote:
> 
> Hi;
> 
> I am sorry for the vagueness of the questions, but now that i have some  
> understanding of how these files are supposed to work i want to get this  
> right!
> 
> to support 4.0/5.1/7.1 for the vt1618 codec i have to change a different  
> set of twiddlers than what is called out in the current version of the  
> conf file.
> 
> worse yet, the twiddlers called out in the current file dont even *exist*  
> on the vt1618:
> 
>    {
>    	name "Surround Down Mix"
>          preserve true
>          value off
>          lock true
>          optional true
>    }
>    {
>          name "Center/LFE Down Mix"
>          preserve true
>          value off
>          lock true
>          optional true
>    }

The "optional true" line means that this control is set up only when
it exists.  If not present, simply ignored.

> How do i add new stuff without breaking old stuff? is there a sub-identity  
> that i could use?

You can add your controls similarly with "optional true" (assume they
are unique).


Takashi