Use a unified pointer emulation model

The existing kernel MT devices together use a handful of different
pointer emulation strategies, each with its own subtlety. This creates
a problem for grail, which needs to rebuild pointer emulation during
gesture recognition; relying on the correct pointer information to be
available at the right time becomes almost impossible.

This patch implements a common pointer emulation model for grail,
following a strategy recently discussed on LKML. This resolves the
problems stemming from different emulation strategies, and results
in a common pointer emulation experience for all devices.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/grail-impl.h b/src/grail-impl.h
index 6093a0f..dc3b425 100644
--- a/src/grail-impl.h
+++ b/src/grail-impl.h
@@ -28,6 +28,7 @@
 
 struct grail_impl {
         struct touch_dev dev;
+        struct touch_caps emu;
         struct evbuf evbuf;
         int filter_abs;
         int pointer_status;