diff options
| author | David Brownell <david-b@pacbell.net> | 2005-01-06 16:45:52 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <greg@kroah.com> | 2005-01-06 16:45:52 -0800 |
| commit | a4ea4100b774242ac1886916e9a752b7873950e6 (patch) | |
| tree | 9880f6cb806f33c649696604e877b7df678d4816 /net/lapb/lapb_iface.c | |
| parent | 94be39b80794358aa469a32b1ce705f647c14342 (diff) | |
[PATCH] USB: definitions for USB2 debug device, debug port
This provides basic definitions to support "USB2 Debug Devices", as
supported by certain EHCI root hub ports (from ALI, Intel, NVidia, and
other vendors). Docs are available at Intel's USB spec webpage.
The basic idea is to help debug "legacy free" systems, with no serial port
for a console or debugger to use. The USB debug port uses PIO to send and
receive at most 8 bytes of high speed data at a time, so it can support one
I/O channel without needing _any_ of the usbcore infrastructure, or DMA,
or IRQs. (Cost can be 2KB rather than ~150KB.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Diffstat (limited to 'net/lapb/lapb_iface.c')
0 files changed, 0 insertions, 0 deletions