The poke driver is WIP IIRC.
That's good to know... as neither Trac nor the source give any indication of that. ;-) This should really be commented in at least the header file. And what remains to be done? The only entry related to poke I can find with svn log is:
r13187 | axeld | 2005-06-16 21:12:46 +0200 (Thu, 16 Jun 2005) | 2 lines Added poke driver, courtesy of Oscar Lesta. The "poke" command line application will follow.
Also, I'm not sure if it's really worth documenting this one a lot.
Nah, but it is well suited for learning how to write documentation. :)