HID: uhid: forward open/close events to user-space
HID core notifies us with *_open/*_close callbacks when there is an actual
user of our device. We forward these to user-space so they can react on
this. This allows user-space to skip I/O unless they receive an OPEN
event. When they receive a CLOSE event they can stop I/O again to save
energy.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/uhid.h b/include/linux/uhid.h
index f8ce6f7..351650b 100644
--- a/include/linux/uhid.h
+++ b/include/linux/uhid.h
@@ -27,6 +27,8 @@
UHID_DESTROY,
UHID_START,
UHID_STOP,
+ UHID_OPEN,
+ UHID_CLOSE,
UHID_INPUT,
};