USB: Export if an interface driver supports autosuspend.

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Documentation / ABI / testing / sysfs-bus-usb

diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index 11a3c1682cecb87e16514249d6877a18608ccf01..df6c8a0159f1c9abeaf54931384fdf36255f60a5 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -85,3 +85,19 @@ Description:
 Users:
                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/