1 files changed, 42 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power
index 237c735db6c9..31725ffeeb3a 100644
--- a/Documentation/ABI/testing/sysfs-power
+++ b/Documentation/ABI/testing/sysfs-power
@@ -189,3 +189,45 @@ Description:
 
                 Reading from this file causes the last string successfully
                 written to it to be returned.
+
+What:           /sys/power/wake_lock
+Date:           February 2012
+Contact:        Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+                The /sys/power/wake_lock file allows user space to create
+                wakeup source objects and activate them on demand (if one of
+                those wakeup sources is active, reads from the
+                /sys/power/wakeup_count file block or return false).  When a
+                string without white space is written to /sys/power/wake_lock,
+                it will be assumed to represent a wakeup source name.  If there
+                is a wakeup source object with that name, it will be activated
+                (unless active already).  Otherwise, a new wakeup source object
+                will be registered, assigned the given name and activated.
+                If a string written to /sys/power/wake_lock contains white
+                space, the part of the string preceding the white space will be
+                regarded as a wakeup source name and handled as descrived above.
+                The other part of the string will be regarded as a timeout (in
+                nanoseconds) such that the wakeup source will be automatically
+                deactivated after it has expired.  The timeout, if present, is
+                set regardless of the current state of the wakeup source object
+                in question.
+
+                Reads from this file return a string consisting of the names of
+                wakeup sources created with the help of it that are active at
+                the moment, separated with spaces.
+
+
+What:           /sys/power/wake_unlock
+Date:           February 2012
+Contact:        Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+                The /sys/power/wake_unlock file allows user space to deactivate
+                wakeup sources created with the help of /sys/power/wake_lock.
+                When a string is written to /sys/power/wake_unlock, it will be
+                assumed to represent the name of a wakeup source to deactivate.
+                If a wakeup source object of that name exists and is active at
+                the moment, it will be deactivated.
+
+                Reads from this file return a string consisting of the names of
+                wakeup sources created with the help of /sys/power/wake_lock
+                that are inactive at the moment, separated with spaces.