Are there any documents regarding how one should use USB ISOC endpoints in linux 2.6 ?
I need answers to questions like: -
1) set alternate interface then submit urb, or submit the urb on initialisation, then set alternate interfaces on the fly.
2) How many urb's should one use per ISOC endpoint. I would assume 2, one being filled by the application, while the other is being output by the usb hardware. Can one use just 1 urb? Should one use more than 2?
3) Are ISOC urbs for IN and OUT endpoints linked in any way, or are they separate. E.g.
For linked: submit urb, while the hardware outputs isoc data from the urb, it also files the urb with recorded data and returns urb.
For separate: submit urb, hardware outputs isoc data, and then returns urb.
I cannot find any documentation that might answer these questions, so pointers would be very helpful.
Cheers James
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