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    SubjectRe: 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

    I tried with 8kHz, 8-bit, too:

    user@devuan:/my/tui/rweb$ arecord -D plughw:CARD=Audio,DEV=1 -t wav
    --max-file-time 30 mon.wav
    Recording WAVE 'mon.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
    ^CAborted by signal Interrupt...
    arecord: pcm_read:2103: read error: Interrupted system call
    user@devuan:/my/tui/rweb$ aplay -D plughw:CARD=Audio,DEV=1 -t wav
    mon.wav
    Playing WAVE 'mon.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
    ^CAborted by signal Interrupt...

    Recording works okay, but playback produces ugly noise (not white this
    time). If I copy mon.wav to PC, it playes back in pretty acceptable
    quality.

    So summary

    HIFI DAI works
    VOICE DAI recording is ok
    VOICE DAI playbacks plays noise.

    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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