raw-gadget

You can solder a Zero Stem [1] onto an RPi Zero. No experience with it. I just went searching for "raspberry pi 3 UDC", because I have a spare RPi 3. It was mentioned in the context of Raw Gadget [2], which is a Linux kernel driver that gives more low-level control over Gadget FS. I've been reading about this problem space a little lately, and Gadget FS seems pretty versatile and just needs a kernel recompile to enable it on RPi, I believe. I found out about Raw Gadget on Raspberry Pi[3] just now, in reading about raw-gadget [4]: > Most of the Gadset subsystem interfaces (with the exception of GadgetFS and the FunctionFS-based composite function) only allow emulating USB devices of specific classes. Compared to them, Raw Gadget allows emulating USB devices of arbitary classes. [1] https://zerostem.io/ [2] https://git.kernel.org/pub/scm/li

I've been using https://github.com/xairy/raw-gadget to create a virtual USB device on my raspberry pi I've got plugged into my PC. I'm currently using It to emulate a MTP camera so I can spoof some proprietary software.

I don't own a steamdeck. But searching around the web a bit I found out that raw-gadget^1 was merged into the linux kernel in 5.7. And AFAIU that would enable proxying of USB devices. [1] https://github.com/xairy/raw-gadget

It sure doesn't seem to. That's why they have a separate subproject for it- https://github.com/xairy/raw-gadget/blob/master/dummy_hcd/RE... But you certainly could know more than me about it! Why do you think it's exclusively for acting as a USB gadget connected to the Linux kernel it's running on?