There is not a released driver, but there is a Beta Linux Motion driver. If you are interested in becoming a Beta customer and receiving this driver then please send in a request from the following web site:
http://sine.ni.com/apps/we/niae_asc.main?p_action=step_one&p_contact_method=email_ni
Please include as much detail as you can about your application.
Regards,
Andy Bell
Application Engineer
National Instruments