-----Original Message-----
From: Takashi Iwai [mailto:tiwai@xxxxxxx]
Sent: Mon 2/26/2007 6:49 AM
To: John Utz
Cc: alsa-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: patch: ac97_patch.c - enable 'Smart 5.1' on VIA vt1617a ac97 codec
At Fri, 23 Feb 2007 16:44:33 -0800,
John Utz wrote:
>
> This patch allows via vt1617a end users to configure what via calls Smart 5.1 - a
> mechanism for controlling the 3 bi-directional analog connectors that some OEM's use
> instead of a larger collection of dedicated analog input and output connectors.
>
> As outlined in previous discussion on this list, the outcome matrix for togging these
> bits is somewhat arcane and seemingly lacking in cohesion, but with only 3 bits, it's
> reasonable to expect that a motivated end user will be able to eventually configure
> their own personal setup to their needs.
>
> Note that in some instances (such as an epia C7) it is also required to disable
> 'alternate surround out' to get surround to work properly.
>
> Note that this is my first ever alsa patch and after review by wiser craniums it may
> need fixin'. ;-)
>
> plz dont hesitate to ask for such corrections!
*
* Well, I still think that these Smart 5.1 controls are too cryptic.
* ...and with this patch, you'll have even three such switches!
Honestly, it's actually 4, because if the alt output thingy isnt turned off, then surround routes off to nowhere...
* IMO, it'd be (a little bit) better to have a single control to set up
* these things. For example, you can give an enum control that has 8
* entries for SM51A,B,C setups.
Happy to oblige, I'll study up on AC97_ENUM_* and try to make this possible.
* Takashi
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