linux-kernel - Re: [Alsa-devel] sound/isa/cmi8330.c: dead ENABLE_SB

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Date:	Tue, 19 Dec 2006 10:59:15 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	George Talusan <gstalusan@...terloo.ca>, perex@...e.cz,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [Alsa-devel] sound/isa/cmi8330.c: dead ENABLE_SB_MIXER code

At Mon, 4 Dec 2006 17:04:34 +0100,
Adrian Bunk wrote:
> 
> In sound/isa/cmi8330.c, the ENABLE_SB_MIXER code is currently never 
> used.
> 
> What's the story behind this?
> Should ENABLE_SB_MIXER be enabled?
> Or the code be removed?

CMI8330 has a dual interface for SB and Adlib modes.  The mixer can
also behave differently according to the mode.  The current code has
mixer elements corresponding to both modes.

However, these mixer elements _seem_ to interactive with each other,
and cannot be controlled individually.  That's why ENABLE_SB_MIXER is
disabled.  I cannot check this issue any longer since the test board
got broken long time ago...

I don't think we would get many gain by changing this old code.
(and the relevant part isn't so big.)
Let's keep as it is.

Takashi
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