Add Support for Playstation Controllers with xboxdrv

[dudleydes]

Playstation controllers are not natively supported by Qt but can work with xboxdrv to emulate a Xbox 360 controller.

The command suggested in the Qt Gamepad documentation is

sudo xboxdrv --detach-kernel-driver --mimic-xpad -s

A wired PS3 controller works in the Pegasus frontend with this command but it's not available in emulators. Running cat /proc/bus/input/devices, the virtual Xbox 360 pad appears as js0 with no assignment for the PS3 controller.

I can add a flag --evdev /dev/input/by-id/usb-Sony_PLAYSTATION_R_3_Controller-event-joystick but the PS3 controller does not work in Pegasus. It works fine once a rom is launched. This is because the PS3 controller is assigned js0 and the virtual Xbox 360 pad js1.

I do have a solution working using Linux Joystick Mapper.

[mmatyas]

There have been a large set of changes to the gamepad handling recently, and I think PS3 controllers should also work now out of the box. If you still have one around, could you test it with the latest release?

[mmatyas]

In theory, the current gamepad engine (SDL 2.0.14) supports even PS5 gamepads, so I think this can be closed now.