linux-kernel - Re: simultaneous voice/data works (was Re: call/normal switch was Re: omap4-droid4: voice call support was)

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Message-ID: <20180408074124.GA19844@amd>
Date:   Sun, 8 Apr 2018 09:41:24 +0200
From:   Pavel Machek <pavel@....cz>
To:     Dan Williams <dcbw@...hat.com>
Cc:     Merlijn Wajer <merlijn@...zup.org>,
        Tony Lindgren <tony@...mide.com>,
        Sebastian Reichel <sebastian.reichel@...labora.co.uk>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        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: simultaneous voice/data works (was Re: call/normal switch was
 Re: omap4-droid4: voice call support was)

Hi!

> > mmcli -m 0 --enable
> > mmcli -m 0  --location-enable-gps-nmea
> > watch -n .3 sudo mmcli -m 0  --location-get-gps-nmea
> > 
> > ...can be used to get GPS data. Droid4 seems to have rather bad GPS,
> > so you should probably put it near window for testing.
> > 
> > Is there way to grab data from modemmanager and feed it to gpsd, so
> > that normal applications can access gps? I don't see easy way.
> > 
> > I tried --location-enable-gps-unmanaged , but that did not work for
> > me.
> 
> That requires a TTY that would spit out the GPS data; in this mode MM
> only sends the start/stop commands, and what comes out the GPS TTY is
> undefined (at least by MM).
> 
> So unless you know that one of the 6600's TTYs does GPS and in what
> format it does GPS, then no.
> 
> Doesn't --location-get-gps-nmea work for you?  That will spit out the
> latest NMEA traces MM gets from the modem, if it supports NMEA.  I
> believe --location-status will tell you what methods MM supports with
> the modem.

Yes, --location-get-gps-nmea works for me.

I guess one way forward would be to implement --location-get-gps-nmea
support for qmicli, and use that?

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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