From 2ce305129ca94394096f4d697d51eb120de2940b Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Wed, 26 Oct 2011 13:21:18 +1000
Subject: Skip event posting for empty slots.
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ABS_MT_SLOT comes before any other events. The following order of events
is common for protocol B devices (and mtdev):

...
EV_SYN
ABS_MT_SLOT        → posting here means we miss on the position information
ABS_MT_POSITION_X
ABS_MT_POSITION_Y
ABS_MT_SLOT
ABS_MT_POSITION_X
ABS_MT_POSITION_Y
EV_SYN

Store the stot state as SLOT_EMPTY after posting an event (i.e. EV_SYN and
ABS_MT_SLOT) and then don't post until the next slot/syn event.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 src/evdev.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/evdev.h')

diff --git a/src/evdev.h b/src/evdev.h
index 165aea4..27e404c 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -103,6 +103,7 @@ enum fkeymode {
 enum SlotState {
     SLOTSTATE_OPEN = 8,
     SLOTSTATE_CLOSE,
+    SLOTSTATE_UPDATE,
     SLOTSTATE_EMPTY,
 };
 
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