XXX This driver might go away again, since you can do it all with ugen.
XXX But this driver is compatible with the Linux driver so there are
XXX programs for it.
This code probably doesn't work, because it has not been tested.
Despite several pleas for testing there doesn't seem to be any Visor owners
out there. Perhaps it will get tested if it's in -current?
Anyway, the code can at least serve as a template for how to make a USB driver
that shows up as a tty.
the device driver instead of happening automagically in the HC driver.
This affects both the HC-USBD interface as well as the USBD-device
interface.
This change will allow DMA buffers to be reused e.g. in isochronous
traffic.
Add isochronous support to the UHCI driver (not for OHCI yet).
It is accessible through the usual tty abstraction.
XXX The driver needs better error handling and a special call device.
XXX It also needs more testing.