linux-kernel - Re: [PATCHv6 0/4] n_gsm serdev support and protocol driver for droid4 modem

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Message-ID: <20201224080239.GF26857@atomide.com>
Date:   Thu, 24 Dec 2020 10:02:39 +0200
From:   Tony Lindgren <tony@...mide.com>
To:     Pavel Machek <pavel@....cz>
Cc:     Johan Hovold <johan@...nel.org>, phone-devel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh@...nel.org>,
        Alan Cox <gnomes@...rguk.ukuu.org.uk>,
        Lee Jones <lee.jones@...aro.org>, Jiri Slaby <jslaby@...e.cz>,
        Merlijn Wajer <merlijn@...zup.org>,
        Peter Hurley <peter@...leysoftware.com>,
        Sebastian Reichel <sre@...nel.org>,
        linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org
Subject: Re: [PATCHv6 0/4] n_gsm serdev support and protocol driver for
 droid4 modem

Hi,

* Pavel Machek <pavel@....cz> [201220 22:48]:
> Hi!
> 
> > Sorry about the late reply on this.
> 
> I'm afraid I'll need some more answers in near future, but for now:
> 
> Tony, do you remember / can you figure out what gsmtty GPS is on? I
> never used it on that interface, and I can't seem to figure it out.
> 
> My notes say:
> 
> /dev/motmdm1 -- basic support, calls, on/off                                    
> /dev/motmdm3 -- send sms interface                                              
> /dev/motmdm9 -- receive sms interface                                           
>
> (and gsmtty numbering is same)

Yes I have not had a chance to look at these for several months now,
but have the latest set in droid4-pending-v5.10 branch in my github
tree.

The gnss device is at /dev/gsmtty6, see the current droid4-agps tool
to upload the almanac also on github. That's has turned out to be a
pretty good gsm serdev test too :)

> For now I converted gnss driver to use serdev interface, and n_gsm to
> provide it... Not yet finished but I believe I'm walking in the right
> direction.

Great, sounds good to me if you got things working with just serdev
calls :) I'll try to take a look at this stuff again after I have
the other pending droid4 issues out of the way like v5.12 charger
and keyboard stuff.

Regards,

Tony