DW5560 (Ericsson F5321) - GPS capability not available

[Aleksander Morgado]

Hey,

>
> on Dell E6430 with DW5560 (Ericsson F5321) card installed, I can use
> mmcli to correctly connect to the internet, it works pretty nice :)
>
> However I am not able to control modem GPS capabilities through MM.
> Previously I enabled GPS NMEA stream through wvdial conf like this:
>
> [Dialer gps]
> Modem = /dev/ttyACM0
> Init1 = AT*E2GPSCTL=1,2,1
> Init2 = AT*E2GPSNPD
>
> After I could read the stream on /dev/ttyACM0 and hook ie. gpsd to it.
>
> However mmcli does not show the GPS capabilities before or after running
> this command (or running the wvdial gps and restarting/reruning-search
> in mmcli), also I've tried to switch modes by "options cdc_ncm
> prefer_mbim=N" (or =Y), without success.
>
> # mmcli -m 0 --location-status
>
> /org/freedesktop/ModemManager1/Modem/0
>   ----------------------------
>   Location |   capabilities: '3gpp-lac-ci'
>            |        enabled: '3gpp-lac-ci'
>            |        signals: 'no'
>
> Device is identified as "Bus 004 Device 003: ID 413c:818e Dell Computer
> Corp." Revision (by mmcli -m 0) is "R3C11" (R3C11/R4D02 i suppose)
> Partial device identification as follows:
>
> # mmcli -m 0
>
> /org/freedesktop/ModemManager1/Modem/0 (device id '--censored--')
>   -------------------------
>   Hardware |   manufacturer: 'Dell'
>            |          model: 'DW5560'
>            |       revision: 'R3C11'
>            |      supported: 'gsm-umts'
>            |        current: 'gsm-umts'
>            |   equipment id: '--censored--'
>   -------------------------
>   System   |         device:
> '/sys/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.6'
>            |        drivers: 'cdc_acm, cdc_ncm, cdc_wdm'
>            |         plugin: 'Ericsson MBM'
>            |   primary port: 'ttyACM1'
>            |          ports: 'ttyACM1 (at), cdc-wdm0 (at), cdc-wdm1
> (at), wwp0s29u1u6i6 (net), ttyACM2 (at), ttyACM0 (at)'
>
> Can you advise on how to get the gps capability shown and enabled?
>
> I'm using these versions of packages (Debian Stretch with sid aptitude
> list):
>
> 1.18.0-2        libqmi-glib5:amd64
> 1.18.0-2        libqmi-proxy
> 1.18.0-2        libqmi-utils
> 1.10.2-2        libqmi-glib1:amd64
> 1.6.8-1         gir1.2-modemmanager-1.0:amd64
> 1.6.8-1         modemmanager
> 1.6.8-1         modemmanager-dev:amd64
>

The 1.6.8 version should support GPS management as long as the GPS
data port is flagged correctly via udev rules.

Try to edit this file and add the GPS_PORT rule (look for the 5560
section and just add one line below)
$ vim /lib/udev/rules.d/77-mm-ericsson-mbm.rules
  # Dell 5560
  ATTRS{idVendor}=="413c", ATTRS{idProduct}=="818e", ENV{ID_MM_ERICSSON_MBM}="1"
  ATTRS{idVendor}=="413c", ATTRS{idProduct}=="818e",
ENV{.MM_USBIFNUM}=="09", ENV{ID_MM_ERICSSON_MBM_GPS_PORT}="1"

Then:
$ sudo udevadm control --reload
$ sudo udevadm trigger
And restart ModemManager

I have no idea if the "09" interface is the one for the GPS port, but
all the other Dell modems seem to use that one.

-- 
Aleksander
https://aleksander.es