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diff --git a/xorg-server/config/dbus-api b/xorg-server/config/dbus-api
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+D-BUS Configuration API v2
+----------------------------
+
+The X server will register the bus name org.x.config.displayN, and the 
+object /org/x/config/N, where N is the display number.
+
+Currently only hotplugging of input devices is supported.
+
+org.x.config.input:
+    org.x.config.input.version:
+        Returns one unsigned int32, which is the API version.
+
+    org.x.config.input.add:
+        Takes an argument of key/value option pairs in arrays, e.g.:
+         [ss][ss][ss][ss]
+        is the signature for four options.  These options will be passed
+        to the input driver as with any others.
+        Option names beginning with _ are not allowed; they are reserved
+        for internal use.
+
+        Returns a number of signed int32s.  Positive integers are the
+        device IDs of new devices; negative numbers are X error codes,
+        as defined in X.h.  BadMatch will be returned if the options
+        given do not match any device.  BadValue is returned for a malformed
+        message.  (Example: 8 is new device ID 8; -8 is BadMatch.)
+
+        Notably, BadAlloc is never returned: the server internally signals
+        to D-BUS that the attempt failed for lack of memory.
+
+    org.x.config.input.remove:
+        Takes one uint32 argument, which is the device ID to remove, i.e.:
+         u
+        is the signature.
+
+        Returns one signed int32 which represents an X status as defined in
+        X.h. See org.x.config.input.add. Error codes are negative numbers.
+
+    org.x.config.input.listDevices:
+        Lists the currently active devices. No argument. 
+        Return value is sequence of [<id> <name>] [<id> <name>] ..., i.e. [us].