Hello everybody :)

I recently installed pimame onto one of my Pis, and really got the hang of the old snes and ps1 games. nice stuff :)

now in order to be able to play these games in style, i wanted to hook up some original controller hardware. I already succeeded in fitting an Arduino Leonardo as an "adapter" between an old SNES gamepad and the Pi, and it works great!

So yesterday I wanted to extend the setup to the second controller, and here's where it becomes a bit techy. The firmware on the Arduino seems to work (I set up the HID descriptors to the best of my knowledge, and it also shows as two gamepads when i hook it up to an old WinXP machine) but the pimame detects the setup as one joystick with 4 axes and 18 buttons.

Though I might even make this work for some emulators, I'd really like to see those pads listed as separate device (/dev/input/js0, js1 and maybe even js2 and 3... I bought 4 connectors, just don't have that many gamepads).

Now my googling has brought me to the point where I think that this might be an issue with the linux kernel USB HID driver, more specifically: There's a quirk inside the linux kernel named "HID_QUIRK_MULTI_INPUT" which is supposed to enable exactly the desired behaviour.

The problem with that quirk is: it needs to be enabled for my specific USB vendor id / device id in the kernel source code, which in turns brings me to the point where I need to recompile the pimame kernel in order to confirm my theory (and hopefully make things work).

So to round things up, my simple questions would be: What's the base for the pimame kernel? Since I believe it's based on Raspbian, will the original kernel sources from https://github.com/raspberrypi/linux work? which branch was used? what patches are applied?

I've been doing linux for some time, and compiled kernels before (I've done it on the Pi, too) so I guess I could pick it up from there again if somebody could fill in my blanks :)

Cheers
J