[PATCH] broadband-modem-mbim: disable CDMA capabilities until we actually support MBIM+CDMA

[Collin McMillan]

Hi David,

I'm glad that it is working for you without the FCC Auth command!  However
I am not able to replicate this behavior.  I suppose it is possible that
you have some update that I do not, but it is also possible that the
firmware is slightly different for some reason.  I'm not an expert!

When I have a little more time, I need to test this more, plus finish my
QMI-over-MBIM patch for libmbim/libqmi.  Right now the tool I uploaded
before is working fine.

I also need to see if Sierra Wireless has a new firmware available on their
site.  Mine is new as of July, but a fix could be in right now.

BTW I have an ATT and a T-Mobile SIM card, both on pre-pay plans.

Collin



On Sun, Aug 30, 2015 at 1:33 PM, Ward, David - 0665 - MITLL <
david.ward at ll.mit.edu> wrote:

> On 08/30/2015 02:21 AM, David Ward wrote:
> > On 08/20/2015 12:43 PM, Dan Williams wrote:
> >> CDMA-capable modems (like a Sierra EM7355) will fail to even enable,
> >> because the internal CDMA code tries to initialize using AT commands and
> >> that fails because many MBIM modems don't have an AT port.  We should
> >> figure out how to support minimal MBIM + CDMA using MBIM instead of
> >> AT-anything.
> >
> > Not only does this fix allow me to use MBIM on a Dell Wireless 5808e
> > (branded Sierra Wireless EM7355)...
> >
> > I now seem to be able to use MBIM directly from a cold boot, without
> > ever switching to the QMI configuration. And for that matter, the QMI
> > configuration no longer seems to require the FCC Auth command; the
> > modem goes directly to an online state even if ModemManager is
> > disabled at startup. I have disconnected the laptop from both AC and
> > battery for 10 minutes and then this still works. I'm quite confident
> > this was not possible three weeks ago.
> >
> > Was this a Verizon over-the-air firmware update perhaps? Is anyone
> > else with this modem noticing this too?
> >
> > # qmicli -p -d /dev/cdc-wdm0 --dms-get-revision
> > [/dev/cdc-wdm0] Device revision retrieved:
> >     Revision: 'SWI9X15C_05.05.16.03 r22385 carmd-fwbuild1 2014/06/04
> > 15:01:26'
>
> I left out one potentially relevant detail: a data plan was only
> activated on this modem this past week. But prior to that (when I was
> still using QMI with the FCC Auth command), the modem still connected to
> the network, and my browser just redirected me to a Verizon landing page
> for activating a data plan instead.
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