[review] Carrier config support and fwupd integration

[Aleksander Morgado]

Hey!

> The following MR adds support for reporting the current carrier config
> in use, and also implements automatic carrier config switching based
> on QMI PDC, initially done for the DW5821e.
> https://gitlab.freedesktop.org/mobile-broadband/ModemManager/merge_requests/66
>
> A single modem may have multiple per-carrier configurations stored,
> and then we can select which one to use by default based on the
> currently available SIM card. E.g. a modem running with a Verizon SIM
> card will use the Verizon-specific configuration, and if the user
> inserts an AT&T SIM card, ModemManager will detect it and
> automatically switch to the AT&T-specific configuration.
>
> This new carrier config logic also allows us to integrate
> "carrier-specific upgrade paths" in fwupd. E.g. vendors may push to
> fwupd firrmware updates for a given module that may apply to specific
> operators only. This is quite common because each operator ends up
> with specific firmware versions and configs tested and approved, and
> so we may want to limit upgrading firmware only to those versions
> approved in each carrier by default.
>
> The integration of firmware update for ModemManager devices is
> currently limited to those supporting fastboot and/or QMI PDC. E.g.
> the DW5821e or some other Quectel devices.
> https://github.com/hughsie/fwupd/pull/875
>

This is now merged in git master.

Also, worth noting, fwupd 1.2.6 already supports the ModemManager integration.

-- 
Aleksander
https://aleksander.es