Messages in this thread | | | Date | Wed, 28 Mar 2018 11:36:41 +0200 | From | Pavel Machek <> | Subject | Re: omap4-droid4: voice call support was Re: [PATCHv5,5/5] ARM: dts: omap4-droid4: add soundcard |
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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 [unhandled content-type:application/pgp-signature] | |