current state of Pantech 290 support?

["Shawn J. Goff" <shawn7400 gmail com>]

I have a Pantech 290 that I'm determined to get working with the
qmi_wwan driver. I have the module, and it creates a wwan interface
when the modem is plugged in; now I'm looking at ModemManager. I
started compiling the qmi-support branch, but it looks like I'll have
to go get some dependencies. Before I start down that path, I'm
wondering MM can actually connect using the 290, and if it can't, is
there a well-defined list of things that need to get done to make it
happen? I saw several related items in the TODO, but they don't look
like there is anything related to being able to bring up a simple
connection (although I'm not to familiar with MM, so maybe there is).