Nokia N900: mixers changed between 4.9 and 4.10-rc3, no longer can use in-call speaker

Pavel Machek
2017-01-15T10:05:33Z

Hi!

> > Both are based on v4.7-rc1. v4.6 worked ok for me.
> >
> > Lets test mini-v4.7: in-call speaker works ok there, and no alsactl
> > warnings.
> >
> > mini-v4.7+cb7e62256e99d285e415cf75db67558f0f8bb107+6d2de5ab4328718302
> > c54b20222c6b1a574c3fce
> >
> > : something seems to be broken there already.
> >
> > alsactl: set_control:1464: Cannot write control '2:0:0:TPA6130A2
> > Headphone Playback Volume:0' : Remote I/O error
> >
> > But in-call speakers and wired headset still seems to work.
> >
> > Lets test mini-v4.9... works ok. I don't even get the remote i/o
> > error. Interesting.
> >
> > So regression seems to be between v4.9 and v4.10. Any ideas?
>
> Interesting... seems there are no sound relevant changes after v4.9.
>
> Looks like there are only three commits after v4.9 for sound/soc which
> are built for Nokia N900:
>
> e411b0b5eb9b65257a050eac333d181d6e00e2c6
> e7aa450fe17890e59db7d3c2d8eff5b6b41fc531
> 63c3194b82530bd71fd49db84eb7ab656b8d404a
>
> Maybe something not related to sound/soc could broke it?

Lets see.

a9042defa29a01cc538b742eab047848e9b5ae14 -- works ok.
ce38207f161513ee3d2bd3860489f07ebe65bc78 --

alsactl: set_control:1328: failed to obtain info for control #229 (No
such file or directory)

and broken in-call speaker. So this merge breaks stuff:

commit ce38207f161513ee3d2bd3860489f07ebe65bc78
Merge: a9042de 995c6a7
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed Dec 14 11:14:28 2016 -0800

Merge tag 'sound-4.10-rc1' of
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
...
Below are some highlights:

ASoC:
- support for stereo DAPM controls
- some initial work on the of-graph sound card
- regmap conversions of the remaining AC'97
drivers
- a new version of the topology ABI; this should be
backward
compatible
- updates / cleanups of rsnd, sunxi, sti,
nau8825, samsung, arizona,
Intel skylake, atom-sst
- new drivers for Cirrus Logic CS42L42, Qualcomm
MSM8916-WCD, and
Realtek RT5665
...

Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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