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authorPeter Hutterer <peter.hutterer@who-t.net>2018-12-06 09:03:36 +1000
committerBenjamin Tissoires <benjamin.tissoires@redhat.com>2018-12-07 15:13:40 +0100
commitc201e3808e0e4be9b98d192802085a9f491bd80c (patch)
tree63493b5da5fdc7d66235a918978e3b4f0f31cf84 /include
parent868613f1c0ccf7b832f38b48b18cca31cdeb3d26 (diff)
Input: restore EV_ABS ABS_RESERVED
ABS_RESERVED was added in d9ca1c990a7 and accidentally removed as part of ffe0e7cf290f5c9 when the high-resolution scrolling code was removed. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Martin Kepplinger <martin.kepplinger@ginzinger.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/uapi/linux/input-event-codes.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index 3eb5a4c3d60a..ae366b87426a 100644
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h
@@ -752,6 +752,15 @@
#define ABS_MISC 0x28
+/*
+ * 0x2e is reserved and should not be used in input drivers.
+ * It was used by HID as ABS_MISC+6 and userspace needs to detect if
+ * the next ABS_* event is correct or is just ABS_MISC + n.
+ * We define here ABS_RESERVED so userspace can rely on it and detect
+ * the situation described above.
+ */
+#define ABS_RESERVED 0x2e
+
#define ABS_MT_SLOT 0x2f /* MT slot being modified */
#define ABS_MT_TOUCH_MAJOR 0x30 /* Major axis of touching ellipse */
#define ABS_MT_TOUCH_MINOR 0x31 /* Minor axis (omit if circular) */