linux-kernel - Re: GPS fun on Droid 4 and leste

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Message-ID: <20200820070045.GB9738@amd>
Date:   Thu, 20 Aug 2020 09:00:45 +0200
From:   Pavel Machek <pavel@....cz>
To:     Tony Lindgren <tony@...mide.com>
Cc:     maemo-leste@...ts.dyne.org,
        kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, sre@...nel.org, nekit1000@...il.com,
        mpartap@....net, merlijn@...zup.org, martin_rysavy@...trum.cz
Subject: Re: GPS fun on Droid 4 and leste

Hi!

> > GPS on the droid 4 does not really work out of the box.
> > 
> > gpsd is not in default installation, maybe it should be?
> > 
> > What is worse, there's something broken with gpsd. Try:
> > 
> > /usr/sbin/gpsd -N -D 5 /dev/gnss0
> > gpspipe -w
> > # this seems to work, but do ^C and restart
> > gpspipe -w
> > ...and it hangs.
> 
> Some earlier versions of gpsd I think had issues where you could
> only connect one client. Or it was a bug in the kernel drivers..
> Anyways, multiple gpspipe instances have been working for me for
> a while now with gpsd-3.21.
> 
> I also found some issues in gnss-motmdm driver for closing the
> gnss device, see:
> 
> https://github.com/tmlind/linux/commits/droid4-pending-v5.8
> 
> And I think the xtra2.bin data for agps is now working too :)
> 
> https://github.com/tmlind/droid4-agps/commits/master
> 
> At least I now get a fix in about two minutes after running the
> update.sh, going outside, and starting cgps.

Ok, let me play. But you should be getting fix in two minutes
_without_ AGPS support, if GPS is any good...

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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