[RFC] Initial support for the new MC74XX modules

[Jerry Hicks]

Thanks Aleksander (and happy holidays!)

Wondering what you might think about text messaging on Verizon's LTE with the MC74XX modules?

As I loosely understand things, Verizon requires a connection to their IPv6 VZWIMS network for text messaging on LTE to work.

I can't seem to find anyone at Verizon able to give up useful information regarding configuration/credentials to make it fly with the MC7354/ModemManager setup we are developing with.

Shifting to CDMA operation, the MM messaging API works fine with the MC7354.

If you think the MC74XX might improve our lot with respect to text messaging we might make a shift.


Cheers,

Jerry.

>Hey,

>The new Sierra MC74XX modules are very very different to all previous Sierra modules.
> Among other things, they always work in raw-ip mode, and they also don't implement
> "DMS UIM" commands.

> This series of patches introduces some initial support for these modules, by trying to modify
> the expected link layer protocol in the kernel to the one reported via WDA (if any), and also by
> implementing the "unlock required" check using "UIM Get Card Status" instead of "DMS UIM
> Get PIN status". There are multiple other operations based on "DMS UIM" that should be
> updated to use "UIM" service operations, but this one at least allows using the module when
> the SIM card has PIN request disabled.

> There's also another patch which ends up requesting Static IP configuration on the newly
> connected Bearer if raw-ip is used; for now to avoid needing a DHCP client with raw-ip support.

> Comments welcome!

> --
> Aleksander