force Nacon Compact Controller from xpad to hid-sony

[smesgr <smesgr@xxxxxxxxx>]

Hi,

I bought a Nacon (formally BigBen Interactive) Compact Controller for PC 
and PS4 [0x146b:0x0603]. All USB devices for the vendor BigBen are 
currently handled by xpad driver.

If plugged-in the usb interface descriptor looks like a Xbox360 
controller nock off with an vendor specific device class. I assume to 
support Windows PCs without an additional driver. Neither the audio 
audio jack nor the touch pad work with xpad driver. If plugged-in with 
SHARE/OPTIONS button pressed the device is suddenly a DragonRise Inc. 
Updater [0x0079:0x1836] with a HID interface.

Bacause the device works fine with a PS4 I would like to force hid-sony 
to takeover the device. I removed the 0x146b from xpad driver. Added the 
device to hid-sony.c and hid-quirks.c device table. But the device is 
still not matched. Afaik because the device does not have a HID 
descriptor. Do I need to forge a fake descriptor? Has anybody done 
similar things and could point me to the correct bits missing.

Best Regards

Stephan