Simple approach to write PS3/PS4 usermode driver?

[Manuel Reimer <mail+linux-input@m-reimer.de>]

Hello,

now I've been trying several things, but maybe I missed something.

- If I just blacklist "hid-sony", then everything is dead. No bluetooth 
binding, no "/dev/hidrawX".
- After some searching, I found out that the core reason for this is a 
"hid_have_special_driver" list in hid-core.c which contains the PS3/PS4 
controller.
- So I thought: Maybe I can keep "hid-sony" to keep "/dev/hidrawX" and 
somehow detach the generated eventX and jsX devices. I've been searching 
/sys for about half an hour but I didn't find any way to do this. Maybe 
impossible?

I know that libusb may be an option, but this way I also give up easy 
bluetooth binding. Especially the PS4 gamepad is easy to bind. If the 
resulting bluetooth device wouldn't be blacklisted in hid-core.c.

Maybe someone can give me a hint. Is there any easy way to get the HID 
to input device translation process ported into usermode without giving 
up all the things that work automatically if hid-sony is active?

Thank you very much for any information.

Best regards,

Manuel