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SubjectRe: WIP Droid 4 voice calls, GNSS & PM with a TS 27.010 serdev driver
Hi, little elves!

> So the little elves have been slowly working to get voice calls
> working on droid 4 with the mainline kernel. And just in time for the
> upcoming holidays, it might be possible to call friends and relatives.
> I've pushed out an experimental branch containing serdev ts 27.010
> UART multiplexing support. That contains a serdev core driver for the
> mdm6600 modem (that also now idles the modem for PM), support for Alsa
> ASoC voice codec and mixer, and a GNSS driver for the GPS.
> Where it does not make sense to do a kernel serdev driver, I've
> exposed the rest of the available 27.010 channels as ten /dev/motmdm*
> character devices. There's /dev/motmdm1 for AT commands to dial voice
> calls, /dev/motmdm3 for SMS eventually, and I think there's also a SIM
> card reader at /dev/motmdm10. Then /dev/motmdm7 seems to be just an
> echo channel. The other channels are still a bit of a mystery.

I tried to get access at motmdm, but no:

root@devuan:/home/user# minicom -D /dev/motmdm1
minicom: cannot open /dev/motmdm1: No such file or directory
root@devuan:/home/user# ls -al /dev/motmdm1
ls: cannot access '/dev/motmdm1': No such file or directory
root@devuan:/home/user# dmesg | grep motmd
root@devuan:/home/user# zcat /proc/config.gz | grep MDM
root@devuan:/home/user# uname -a
Linux devuan 4.20.0-rc7-00304-gde109fe #19 SMP Sat Dec 22 20:16:19 CET
2018 armv7l GNU/Linux

Let me try to enable CONFIG_GNSS_MOTMDM. N_GSM also seems enabled.

Is there anything else I need to enable in .config?

Scary Solstice!
(cesky, pictures)
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