[alsa-devel] [PATCH] STAC92xx : add support for missing features
tdavis at dsl-only.net
Tue Aug 28 15:55:36 CEST 2007
I plan on testing these later this week. Will let you know what I find
I have systems with a 3-stack 9227 configuration, and I might be able to
get on a 5 stack system as well.
On Tue, 2007-08-28 at 12:45 +0200, Takashi Iwai wrote:
> At Tue, 28 Aug 2007 04:54:29 +0300,
> Maxim Levitsky wrote:
> > Hi,
> > As promised, those are patches that extend patch_sigmatel.c driver to add
> > missing functionality
> Thanks for the patches!
> > They all are runtime tested with my STAC9227, and datasheet tested with others
> > Note that I did my best to ensure that even if a codec doesn't support a
> > feature (and I don't know sbout that), maximum impact will be a new,
> > non-working mixer control
> > STAC927x are almost exactly the same as STAC922x, but have DAC4
> > 1) Center/LFE swap :
> > It can be sometimes useful to swap those channels, since they are on same
> > line.
> > I add that control only in case Center/LFE DAC is there, and supports L/R
> > swap, it should be very safe.
> > 2) Analog loopback:
> > Added for 922x, 927x, and for 9204/5 which has a different verb, that offers
> > same analog loopback
> > 3) Volume Knob:
> > Added for 9204/5, 9220/1/3, 922x 92-7x
> > I made it a master volume
> > 4) Fixed support for codecs that have 2 or 3 ADC:
> > I added separate mixer controls for all 2/3 ADCs, and made PCM capture device
> > sub-streams count to depend on actual number of ADCs
> > I am looking for your comments,
> > Best regards,
> > Maxim Levitsky
> All patches except 3 look almost good to me. I'll give review back to
> each post. For the next version, could you give the changelog text
> for each patch (not only the subject line) together with your
> sign-off? Then I can merge to HG tree.
> About 3 (volume-knob), we'd need a bit more checks and tests. Does
> the volume knob widget work always as a mater control regardless
> whetehr the real hardware component exists or not? I.e. can we use it
> Tobin, Matt, could you test these patches, especially patch 3, with
> your hardwares? Anyone who has STAC92xx hardwares are welcome for
> testing it, too!
(1) Things will get worse before they get better.
(2) Who said things would get better?
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