Hi Andrea,

>> See the calypso modem driver in plugins/calypso.c for an example as well
>> as doc/calypso-modem.txt for an example udev rule.
> 
> At moment I'm interested in using ofono with a Telit GPRS module with
> serial interface.
> As far as I understand, there already exist a driver for Telit UC864-G
> in plugins dir. I'm trying to figure out how much of this driver can
> be used for other modules by Telit. I'm trying to follow the code path
> from udev detection down to driver selection. I'm therefore slightly
> confused by the interaction of the two modules udev.c and udevng.c. I

udev is the old detection code, udevng is the next generation detection
code.  They work together at the moment.

> see setup and init function for different modems in both of them. Are
> they supposed to provide different functions or is "ng" a short for
> new-generation or the like? If so, and supposed I need to write a new
> driver for the modem, where should I hook it?

If you're adding a new serial modem then likely you want to put it into
udev.c for now.  udevng is limited to USB devices only at the moment.

Regards,
-Denis