Hi,

I own a Granite Devices Simucube force feedback wheel which I'd like to get working under Linux.
The current status is that if I use a tool to check/test the FFB, it tells me that the device does not support FFB.
I'm also using the device under Windows 7 and there it works without any special driver, so it should work with USB HID FFB.
In principle, it supports the following effects (see link below):
- constant force
- friction
- damping
- spring
- sine wave
- square wave
- sawtooth
- triangle

The device advertises as MCS, Granite Devices SimuCUBE with id 16d0:0d5a, I'll attach lsusb output.
Upon connection, the device is recognized and the output is:

[ 3271.812807] usb 1-2.4.2: new full-speed USB device number 10 using xhci_hcd
[ 3271.921182] usb 1-2.4.2: New USB device found, idVendor=16d0, idProduct=0d5a, bcdDevice= 2.00
[ 3271.921184] usb 1-2.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3271.921185] usb 1-2.4.2: Product: SimuCUBE
[ 3271.921186] usb 1-2.4.2: Manufacturer: Granite Devices
[ 3271.921187] usb 1-2.4.2: SerialNumber: 0123456789
[ 3281.943990] input: Granite Devices SimuCUBE as /devices/pci0000:00/0000:00:09.0/0000:04:00.0/usb1/1-2/1-2.4/1-2.4.2/1-2.4.2:1.0/0003:16D0:0D5A.0016/input/input48
[ 3281.944223] hid-generic 0003:16D0:0D5A.0016: unknown set_effect report layout
[ 3281.944228] hid-generic 0003:16D0:0D5A.0016: input,hiddev2,hidraw15: USB HID v1.11 Joystick [Granite Devices SimuCUBE] on usb-0000:04:00.0-2.4.2/input0

I spent some time looking at the code and also other ffb code in usbhid, but since I'm not really familiar with C I have a hard time figuring out why it doesn't work out of the box and how to fix this, but I'd be happy to help implementing/debugging it.
For a start, it would be really nice to find out what is reported, what the report should look like and why it doesn't match.

Kind Regards,
Bernd

Links that might or might not be useful for general information:
https://granitedevices.com/wiki/SimuCUBE_technical_specifications
https://granitedevices.com/wiki/SimuCUBE_Firmware_User_Guide#DirectInput_Effect_Settings_and_Descriptions