I do know from this thread that PS3 controllers can be configured easily.

Gngeo has options to enable joystick support (/dev/js0), but I doubt if that works out of the box with hen-usb. As I must have an usb joystick/pad somewhere in a drawer, I could do some tests. Will let you know my findings it I get some time for that.

Edit: the joystick is recognized and can be used. Did not expect that... Easily configuring the joystick by pressing their buttons will be a bit of a challenge, but setting the right number values is not that hard. Weird thing is that my phone reboots everytime I disconnect the joystick (I do stop usb host mode first )

Edit2: every unload of hen-usb mode makes my phone reboot right now. Don't know if its related to the kernel, but I never had this issue.

Edit3: reboots solved. Had to to with confilicting battery modules.