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Date:   Sat, 31 Mar 2018 21:55:24 +0200
From:   Pavel Machek <pavel@ucw.cz>
To:     Tony Lindgren <tony@atomide.com>
Cc:     Sebastian Reichel <sebastian.reichel@collabora.co.uk>,
        Mark Brown <broonie@kernel.org>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Rob Herring <robh+dt@kernel.org>,
        Lee Jones <lee.jones@linaro.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>, alsa-devel@alsa-project.org,
        linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, kernel@collabora.com,
        Dan Williams <dcbw@redhat.com>
Subject: Re: call/normal switch was Re: omap4-droid4: voice call support was
Message-ID: <20180331195524.GB19388@amd>
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On Sat 2018-03-31 21:46:16, Pavel Machek wrote:
> On Sat 2018-03-31 21:19:39, Pavel Machek wrote:
> > On Sat 2018-03-31 11:19:35, Tony Lindgren wrote:
> > > * Pavel Machek <pavel@ucw.cz> [180331 14:56]:
> > > > Hi!
> > > >=20
> > > > > Hmm well I got audio call hacked to work as a proof of concept ha=
ck,
> > > > > see below. Maybe it can be used to verify some of the assumptions
> > > > > above.
> > > > >=20
> > > > > Then.. To split the work a bit, can you guys maybe try to decode
> > > > > the cpcap register values and try to do a proper ASoC driver patc=
h?
> > > >=20
> > > > This is not proper patch yet, but it should be a step in that
> > > > direction...
> > >=20
> > > Cool :) Microphone still does not work for me.. I tried tweaking
> > > the alsamixer settings but no mic. This is with cold boot with
> > > droid4-kexecboot if that might make a difference, we may have
> > > some register uninitialized somewhere. Any ideas?
> >=20
> > Ok, I was focusing on the speaker side.
> >=20
> > alsamixer, tab to go to capture settings, set it to 37 37 Mic2 Mic1
> > should work, according to my notes, but not recently tested and not
> > tested against real human.
> >=20
> > I'll attempt to test it, but something in my userland shuts down
> > system just after boot 60% of time, which is rather annoying.
>=20
> Hmm. So I tried again, and setting Mic1 and back in the capture
> settings crashed the modem. Bang, disconnected from the USB.

Next try, and it worked this time.

_Before the call_, set mode to Normal and then Call. Then go to
capture, and set 100 100 Mic2 Mic1. Then place a call,

AT+CFUN=3D1
OK
ATD6;

If you change Mic1 setting, GSM modem will likely crash.

Good luck,
								Pavel

--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

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