I have a FT232H breakout board by Adafruit. I'd like for that device to appear in Ubuntu as a user space GPIO device so I can use it with libgpiod.
I've found these patches to the ftdi_sio Kernel driver that seem to say they enable this. Looking at the kernel source for my current kernel it seems those patches are in. The driver is loaded in my kernel.
Yet, the FT232H device never generates any GPIO chip devices when plugged in.
What do I do to make my FT232H device appear as a GPIO device in Linux?