PowerTOP <power@bughost.org>
                http://www.lesswatts.org/projects/powertop/
  
+ What:         /sys/bus/usb/device/<busnum>-<devnum>...:<config num>-<interface num>/supports_autosuspend
+ Date:         January 2008
+ KernelVersion:        2.6.27
+ Contact:      Sarah Sharp <sarah.a.sharp@intel.com>
+ Description:
+               When read, this file returns 1 if the interface driver
+               for this interface supports autosuspend.  It also
+               returns 1 if no driver has claimed this interface, as an
+               unclaimed interface will not stop the device from being
+               autosuspended if all other interface drivers are idle.
+               The file returns 0 if autosuspend support has not been
+               added to the driver.
+ Users:
+               USB PM tool
+               git://git.moblin.org/users/sarah/usb-pm-tool/
++
 +What:         /sys/bus/usb/device/.../authorized
 +Date:         July 2008
 +KernelVersion:        2.6.26
 +Contact:      David Vrabel <david.vrabel@csr.com>
 +Description:
 +              Authorized devices are available for use by device
 +              drivers, non-authorized one are not.  By default, wired
 +              USB devices are authorized.
 +
 +              Certified Wireless USB devices are not authorized
 +              initially and should be (by writing 1) after the
 +              device has been authenticated.
 +
 +What:         /sys/bus/usb/device/.../wusb_cdid
 +Date:         July 2008
 +KernelVersion:        2.6.27
 +Contact:      David Vrabel <david.vrabel@csr.com>
 +Description:
 +              For Certified Wireless USB devices only.
 +
 +              A devices's CDID, as 16 space-separated hex octets.
 +
 +What:         /sys/bus/usb/device/.../wusb_ck
 +Date:         July 2008
 +KernelVersion:        2.6.27
 +Contact:      David Vrabel <david.vrabel@csr.com>
 +Description:
 +              For Certified Wireless USB devices only.
 +
 +              Write the device's connection key (CK) to start the
 +              authentication of the device.  The CK is 16
 +              space-separated hex octets.
 +
 +What:         /sys/bus/usb/device/.../wusb_disconnect
 +Date:         July 2008
 +KernelVersion:        2.6.27
 +Contact:      David Vrabel <david.vrabel@csr.com>
 +Description:
 +              For Certified Wireless USB devices only.
 +
 +              Write a 1 to force the device to disconnect
 +              (equivalent to unplugging a wired USB device).