Is there a Linux driver for the Focus 40 Braille display?

[Al Sten-Clanton]

Greetings.

I'm borrowing a Focus 40.  I called Freedom Scientific with a couple of 
questions.  One of whether this Braille display can work with Linux. 
The guy said not unless there's a Linux driver, and he doesn't know of 
one.  Does anybody on this list know of one or more such drivers, and 
whether any that might exist works well enough to be worth trying?

Also, Focus 40 aside, what other Braille displays presently work with 
Linux?  I doubt we can afford much at this point, but it would be good 
to know in case I do get a decent job or get other help.  (I know of the 
gismo based on the Rasbury pie, but as far as I know it's not yet on the 
market.)

Thanks.

Al