[alsa-devel] [PATCH] ALS4000, slight mixer improvements

Takashi Iwai tiwai at suse.de
Mon Feb 23 08:38:12 CET 2009

At Sun, 22 Feb 2009 20:33:41 +0100,
Andreas Mohr wrote:
> Hi all,
> finally got around to submitting this "slightly unimportant" patch.
> ChangeLog:
> - add 8kHz / 20 kHz low-pass filter switch control
> - add ALS4000 Mono capture route control
> - add annotations to specs pages
> - improve ALS4000 PM saved regs selection (remove SB dummy register,
>   add missing ones)
> - add some missing ALS4000 register defines
> - constify two variables
> Built on 2.6.29-rc5 and playing.

Applied now.  Thanks.

> Will now try to get HDA settings on Aspire One A110L investigated
> (using Takashi's elaborate tools) and corrected
> (the non-working microphone thingy, plus some weird random switching/activation
> of noise in sound sources at times and stuff).

Let me know if it's finished!

> Speaking of sound problems, any thoughts about how to end up with
> _automatic_, generic ALSA soft volume for those cheap non-hardvol USB sticks?
> Short experimentation with that stick was - well - rather short since
> hardvol-only is problematic (the ear-piercing kind of "problematic" ;)
> and seems to need manual .asoundrc softvol addition.
> (don't ask me why I was buying this stick for my A110L in the first place ;)

The only problem right now is that the driver might give a real volume
control but in a different name.  OTOH, softvol itself isn't too bad as
default PCM definition.  Just editing USB-Audio.conf should suffice...



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