Hacking on fingerprinting again or AES2550/AES2810 driver for libfprint

Back in 2007 I participated in driver development for AuthenTec AES2501 scanner, driver was later merged into libfprint project. I didn't hack much on libfprint, just sent few bugfixes, but recently AuthenTec announced that they're willing to send fingerprint scanners for opensource enthusiasts who wants to develop driver for those scanners. So far, so good... I've wrote a letter to AuthenTec and they proposed to send AES2550 or AES2810 scanner to me. I chose AES2550. Actually, AES2550 and AES2810 are pretty same (AES2550 driver should work with AES2810), the only difference is missing crypto engine on AES2550 (who needs cryptography anyway? :))

So, I've got parcel with scanner in August, but unfortunately had no spare time for hacking, I only coded driver stub and read datasheet from AuthenTec.

So, in September/October I've spent few (5-6?) nights hacking on this driver, and finally got it working on my AES2550. Image quality is much better then on my AES2501. Driver lacks crypto features for AES2810 and external flash support for both devices. Anyway, libfprint has no external flash API yet, so there's some space for hacking :)

As usual, code is on my github page, branch aes2550-v2. Some testing is appreciated :)

P.S. Thanks to AuthenTec for opened specs and provided hardware! AuthenTec rocks!

Update: driver was merged into upstream, so you can use upstream libfprint repo