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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/uhid.h b/include/linux/uhid.h
index f8ce6f7571d..351650b7a0f 100644
--- a/include/linux/uhid.h
+++ b/include/linux/uhid.h
@@ -27,6 +27,8 @@ enum uhid_event_type {
 	UHID_DESTROY,
 	UHID_START,
 	UHID_STOP,
+	UHID_OPEN,
+	UHID_CLOSE,
 	UHID_INPUT,
 };