linux-kernel - Re: omap4-droid4: voice call support was Re: [PATCHv5,5/5] ARM: dts: omap4-droid4: add soundcard

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Date:   Wed, 28 Mar 2018 11:00:31 +0200
From:   Pavel Machek <pavel@....cz>
To:     Sebastian Reichel <sebastian.reichel@...labora.co.uk>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Tony Lindgren <tony@...mide.com>,
        Lee Jones <lee.jones@...aro.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: omap4-droid4: voice call support was Re: [PATCHv5,5/5] ARM: dts:
 omap4-droid4: add soundcard

Hi!

> > I can talk to the modem and start a call.
> 
> Doing an AT query is the easy part :)
> 
> > Then something like this (untested!) is certainly needed.
> > Probably more...
> 
> I intentionally left this part out. The CPCAP codec has two DAIs
> and not 3+. The code you just added is a hack from Motorola. Their
> driver is full of hacks and it's obvious its author(s) did not
> fully understand the ASoC APIs.
> 
> My understanding is, that we only need to replace the audio-graph-card
> driver to something more complex. The VOICE DAI needs to be configured
> differently based on the use case:

Does the voice part work for you? I configured all the mixers to
voice, and then am using

sudo aplay -D plughw:CARD=Audio,DEV=1 /usr/share/sounds/alsa/Front_Center.wav  -r 16000
X11 connection rejected because of wrong authentication.
xcb_connection_has_error() returned true
Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit
Little Endian, Rate 48000 Hz, Mono
user@...uan:/my/tui/rweb$

to play the test sound. But I get white noise, not a test sound
:-(. [This also shows problem with card naming.]

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

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