USB-C HDMI Capture Device

dmesg

[  586.607514] usb 3-1: new high-speed USB device number 2 using xhci_hcd
[  586.776825] usb 3-1: New USB device found, idVendor=345f, idProduct=2109, bcdDevice=21.00
[  586.776844] usb 3-1: New USB device strings: Mfr=1, Product=0, SerialNumber=0
[  586.776853] usb 3-1: Manufacturer: MACROSILICON
[  586.780142] usb 3-1: Found UVC 1.00 device <unnamed> (345f:2109)

lsusb

Bus 003 Device 002: ID 345f:2109 MACROSILICON 

Check if device is detected:

apt install v4l-utils

v4l2-ctl --list-devices
Integrated Camera: Integrated C (usb-0000:00:14.0-8):
	/dev/video0
	/dev/video1
	/dev/media0

UVC Camera (345f:2109): USB Vid (usb-0000:3c:00.0-1):
	/dev/video2
	/dev/video3
	/dev/media1
     

sudo apt install guvcview
guvcview

Select video2 or video3 as source