Hi Marco,

> I almost finished the driver..seems to work properly also on the
> embedded device (just for SMS & PPP ). If I would like to share the code
> .. how should I procede? would u like a patch posted here or a git  pull
> request ? or what else ?

Use git send-email and send the patches to the mailing list.  Please see 
'Submitting Patches' section in the HACKING document.

>
> another issue  : anyone could explain what module should I see to
> properly set the ppp0 interface once  got a valid IP from the PPP ?

See test/process-context-settings

Regards,
-Denis