HID: wiimote: Add extension sysfs attribute
Add new sysfs attribute "extension" which returns the currently connected and
initialized extensions.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-wiimote b/Documentation/ABI/testing/sysfs-driver-hid-wiimote
index 5d5a16e..3d98009 100644
--- a/Documentation/ABI/testing/sysfs-driver-hid-wiimote
+++ b/Documentation/ABI/testing/sysfs-driver-hid-wiimote
@@ -8,3 +8,15 @@
Description: Make it possible to set/get current led state. Reading from it
returns 0 if led is off and 1 if it is on. Writing 0 to it
disables the led, writing 1 enables it.
+
+What: /sys/bus/hid/drivers/wiimote/<dev>/extension
+Date: August 2011
+KernelVersion: 3.2
+Contact: David Herrmann <dh.herrmann@googlemail.com>
+Description: This file contains the currently connected and initialized
+ extensions. It can be one of: none, motionp, nunchuck, classic,
+ motionp+nunchuck, motionp+classic
+ motionp is the official Nintendo Motion+ extension, nunchuck is
+ the official Nintendo Nunchuck extension and classic is the
+ Nintendo Classic Controller extension. The motionp extension can
+ be combined with the other two.