evdev 2.1.2

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Protect against zero-sized property values. #19882
2026-04-14 11:44:16 +00:00 · 2009-02-02 11:13:10 +10:00 · 2009-02-02 11:12:28 +10:00 · 2009-02-02 11:12:25 +10:00 · 2009-01-22 15:20:05 +11:00 · 2009-01-22 15:18:45 +11:00
17 changed files with 2605 additions and 262 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,27 @@
+*.patch
+ChangeLog
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+man/evdev.4
+missing
+.deps
+.libs
+*.lo
+*.la
+stamp-h1
+*.bz2
+*.gz
+*.pc
--- a/99
+++ b/99
@@ -1,12 +1,95 @@
-This is a stub file.  This package has not yet had its complete licensing
-information compiled.  Please see the individual source files for details on
-your rights to use and modify this software.
+Various copyright notices found in this driver:

-Please submit updated COPYING files to the Xorg bugzilla:
+Copyright © 2004-2008 Red Hat, Inc.

-https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without
+fee, provided that the above copyright notice appear in all copies
+and that both that copyright notice and this permission notice
+appear in supporting documentation, and that the name of Red Hat
+not be used in advertising or publicity pertaining to distribution
+of the software without specific, written prior permission.  Red
+Hat makes no representations about the suitability of this software
+for any purpose.  It is provided "as is" without express or implied
+warranty.

-All licensing questions regarding this software should be directed at the
-Xorg mailing list:
+THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the copyright holders shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from the copyright holders.
+
+Copyright © 2008 University of South Australia
+copyrights taken from xf86-input-mouse, partly valid for this driver.
+Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+Copyright 1993 by David Dawes <dawes@xfree86.org>
+Copyright 2002 by SuSE Linux AG, Author: Egbert Eich
+Copyright 1994-2002 by The XFree86 Project, Inc.
+Copyright 2002 by Paul Elliott
+
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without
+fee, provided that the above copyright notice appear in all copies
+and that both that copyright notice and this permission notice
+appear in supporting documentation, and that the name of the authors
+not be used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  The authors make no
+representations about the suitability of this software for any
+purpose.  It is provided "as is" without express or implied
+warranty.
+
+THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+
+Copyright 2005 Adam Jackson.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+on the rights to use, copy, modify, merge, publish, distribute, sub
+license, and/or sell copies of the Software, and to permit persons to whom
+the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ADAM JACKSON BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

-http://lists.freedesktop.org/mailman/listinfo/xorg
--- a/47
+++ b/47
@@ -1,47 +0,0 @@
-2006-01-09  David Nusinow,,,  <set EMAIL_ADDRESS environment variable>
-
-	* man/Makefile.am:
-	* man/evdev.man:
-	Bugzilla #968 <https://bugs.freedesktop.org/show_bug.cgi?id=968>
-	Patch #4301 <https://bugs.freedesktop.org/attachment.cgi?id=4301>
-	Add evdev manpage
-
-2005-12-20  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version for X11R7 release.
-
-2005-12-14  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version number for final X11R7 release candidate.
-
-2005-12-06  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* man/Makefile.am:
-	Change *man_SOURCES ==> *man_PRE to fix autotools warnings.
-
-2005-12-03  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version number for X11R7 RC3 release.
-
-2005-12-01  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Remove extraneous AC_MSG_RESULT.
-
-2005-11-29  Adam Jackson  <ajax@freedesktop.org>
-
-	* configure.ac:
-	Only build dlloader modules by default.
-
-2005-11-09  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version number for X11R7 RC2 release.
-
-2005-11-01  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update pkgcheck dependencies to work with separate build roots.
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,4 +19,19 @@
 #  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 AUTOMAKE_OPTIONS = foreign
-SUBDIRS = src man
+SUBDIRS = src man include
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = xorg-evdev.pc
+
+EXTRA_DIST = ChangeLog autogen.sh
+
+MAINTAINERCLEANFILES=ChangeLog
+
+.PHONY: ChangeLog
+
+ChangeLog:
+	(GIT_DIR=$(top_srcdir)/.git git-log > .changelog.tmp && mv .changelog.tmp ChangeLog; rm -f .changelog.tmp) || \
+	(touch ChangeLog; echo 'git directory not found: installing possibly empty changelog.' >&2)
+
+dist-hook: ChangeLog
--- a/20
+++ b/20
@@ -0,0 +1,20 @@
+xf86-input-evdev - Generic Linux input driver for the Xorg X server
+
+Please submit bugs & patches to the Xorg bugzilla:
+
+        https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
+
+All questions regarding this software should be directed at the
+Xorg mailing list:
+
+        http://lists.freedesktop.org/mailman/listinfo/xorg
+
+The master development code repository can be found at:
+
+        git://anongit.freedesktop.org/git/xorg/driver/xf86-input-evdev
+
+        http://cgit.freedesktop.org/xorg/driver/xf86-input-evdev
+
+For more information on the git code manager, see:
+
+        http://wiki.x.org/wiki/GitPage
--- a/configure.ac
+++ b/configure.ac
@@ -22,7 +22,7 @@

 AC_PREREQ(2.57)
 AC_INIT([xf86-input-evdev],
-        1.99.2,
+        2.1.2,
        [https://bugs.freedesktop.org/enter_bug.cgi?product=xorg],
        xf86-input-evdev)

@@ -44,24 +44,6 @@ AC_PROG_CC

 AH_TOP([#include "xorg-server.h"])

-#AC_DEFINE(XFree86LOADER,1,[Stub define for loadable drivers])
-#
-#AC_ARG_ENABLE(XINPUT, AS_HELP_STRING([--enable-xinput],
-#              [Build XInput support (default: yes)]),
-#              [XINPUT=$enableval],[XINPUT=yes])
-#AM_CONDITIONAL(XINPUT, test "x$XINPUT" = "xyes")
-#if test "x$XINPUT" = "xyes" ; then
-#    AC_DEFINE(XINPUT,1,[Enable XInput support])
-#fi
-#
-#AC_ARG_ENABLE(XKB, AS_HELP_STRING([--enable-xkb],
-#              [Build XKB support (default: yes)]),
-#              [XKB=$enableval],[XKB=yes])
-#AM_CONDITIONAL(XKB, test "x$XKB" = "xyes")
-#if test "x$XKB" = "xyes" ; then
-#    AC_DEFINE(XKB,1,[Enable XKB support])
-#fi
-
 AC_ARG_WITH(xorg-module-dir,
            AC_HELP_STRING([--with-xorg-module-dir=DIR],
                           [Default xorg module directory [[default=$libdir/xorg/modules]]]),
@@ -71,12 +53,12 @@ inputdir=${moduledir}/input
 AC_SUBST(inputdir)

 # Checks for extensions
-XORG_DRIVER_CHECK_EXT(RANDR, randrproto)
 XORG_DRIVER_CHECK_EXT(XINPUT, inputproto)

 # Checks for pkg-config packages
 PKG_CHECK_MODULES(XORG, xorg-server xproto $REQUIRED_MODULES)
 sdkdir=$(pkg-config --variable=sdkdir xorg-server)
+AC_SUBST(sdkdir)

 CFLAGS="$CFLAGS $XORG_CFLAGS "' -I$(top_srcdir)/src'
 AC_SUBST([CFLAGS])
@@ -89,4 +71,8 @@ AC_HEADER_STDC
 XORG_MANPAGE_SECTIONS
 XORG_RELEASE_VERSION

-AC_OUTPUT([Makefile src/Makefile man/Makefile])
+AC_OUTPUT([Makefile
+           src/Makefile
+           man/Makefile
+           include/Makefile
+           xorg-evdev.pc])
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -0,0 +1,2 @@
+EXTRA_DIST = evdev-properties.h
+sdk_HEADERS = evdev-properties.h
--- a/include/evdev-properties.h
+++ b/include/evdev-properties.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors:
+ *	Peter Hutterer (peter.hutterer@redhat.com)
+ */
+
+
+#ifndef _EVDEV_PROPERTIES_H_
+#define _EVDEV_PROPERTIES_H_
+
+/* Middle mouse button emulation */
+/* BOOL */
+#define EVDEV_PROP_MIDBUTTON "Evdev Middle Button Emulation"
+/* CARD32 */
+#define EVDEV_PROP_MIDBUTTON_TIMEOUT "Evdev Middle Button Timeout"
+
+/* Wheel emulation */
+/* BOOL */
+#define EVDEV_PROP_WHEEL "Evdev Wheel Emulation"
+/* CARD8, 4 values [x up, x down, y up, y down], 0 to disable a value*/
+#define EVDEV_PROP_WHEEL_AXES "Evdev Wheel Emulation Axes"
+/* CARD16 */
+#define EVDEV_PROP_WHEEL_INERTIA "Evdev Wheel Emulation Inertia"
+/* CARD16 */
+#define EVDEV_PROP_WHEEL_TIMEOUT "Evdev Wheel Emulation Timeout"
+/* CARD8, value range 0-32, 0 to disable a value */
+#define EVDEV_PROP_WHEEL_BUTTON "Evdev Wheel Emulation Button"
+
+/* Drag lock */
+/* CARD8, either 1 value or pairs, value range 0-32, 0 to disable a value*/
+#define EVDEV_PROP_DRAGLOCK "Evdev Drag Lock Buttons"
+
+/* Axis inversion */
+/* BOOL, 2 values [x, y], 1 inverts axis */
+#define EVDEV_PROP_INVERT_AXES "Evdev Axis Inversion"
+
+/* Reopen attempts. */
+/* CARD8 */
+#define EVDEV_PROP_REOPEN "Evdev Reopen Attempts"
+
+/* Run-time calibration */
+/* CARD32, 4 values [minx, maxx, miny, maxy], or no values for unset */
+#define EVDEV_PROP_CALIBRATION "Evdev Axis Calibration"
+
+/* Swap x and y axis. */
+/* BOOL */
+#define EVDEV_PROP_SWAP_AXES "Evdev Axes Swap"
+
+#endif
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -1,5 +1,3 @@
-# $Id$
-#
 # Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 # 
 # Permission to use, copy, modify, distribute, and sell this software and its
--- a/man/evdev.man
+++ b/man/evdev.man
@@ -9,7 +9,9 @@ evdev \- Generic Linux input driver
 .BI "  Identifier \*q" devname \*q
 .B  "  Driver \*qevdev\*q"
 .BI "  Option \*qDevice\*q   \*q" devpath \*q
-.BI "  Option \*qPath\*q     \*q" path \*q
+.BI "  Option \*qEmulate3Buttons\*q     \*q" True \*q
+.BI "  Option \*qEmulate3Timeout\*q     \*q" 50 \*q
+.BI "  Option \*qGrabDevice\*q     \*q" False \*q
 \ \ ...
 .B EndSection
 .fi
@@ -45,17 +47,159 @@ are supported:
 .BI "Option \*qDevice\*q \*q" string \*q
 Specifies the device through which the device can be accessed.  This will 
 generally be of the form \*q/dev/input/eventX\*q, where X is some integer.
-The mapping from device node to hardware is system-dependent.  This option is
-mandatory unless \*qPath\*q is given, and there is no default setting.
+The mapping from device node to hardware is system-dependent.
 .TP 7
-.BI "Option \*qPath\*q \*q" string \*q
-Specifies the device through which the device can be accessed.  This will
-generally be of the form \*q/dev/input/by-path/xyz\*q, where xyz includes the
-name of the device. The mapping from device node to hardware is
-system-dependent. This option has precedence over the \*qDevice\*q option but
-one of \*qPath\*q or \*qDevice\*q must be given.
+.BI "Option \*qEmulate3Buttons\*q \*q" boolean \*q
+Enable/disable the emulation of the third (middle) mouse button for mice
+which only have two physical buttons.  The third button is emulated by
+pressing both buttons simultaneously.  Default: on, until a middle mouse
+button event is registered. Property: "Evdev Middle Button Emulation".
+.TP 7
+.BI "Option \*qEmulate3Timeout\*q \*q" integer \*q
+Sets the timeout (in milliseconds) that the driver waits before deciding
+if two buttons where pressed "simultaneously" when 3 button emulation is
+enabled.  Default: 50. Property: "Evdev Middle Button Timeout".
+.TP 7
+.BI "Option \*qButtonMapping\*q \*q" string \*q
+Sets the button mapping for this device. The mapping is a space-separated list
+of button mappings that correspond in order to the physical buttons on the
+device (i.e. the first number is the mapping for button 1, etc.). The default
+mapping is "1 2 3 ... 32". A mapping of 0 deactivates the button. Multiple
+buttons can have the same mapping.
+For example, a left-handed mouse with deactivated scroll-wheel would use a
+mapping of "3 2 1 0 0". Invalid mappings are ignored and the default mapping
+is used. Buttons not specified in the user's mapping use the default mapping.
+.TP 7
+.BI "Option \*qDragLockButtons\*q \*q" "L1 B2 L3 B4" \*q
+Sets \*qdrag lock buttons\*q that simulate holding a button down, so
+that low dexterity people do not have to hold a button down at the
+same time they move a mouse cursor. Button numbers occur in pairs,
+with the lock button number occurring first, followed by the button
+number that is the target of the lock button. Property: "Evdev
+Drag Lock Buttons".
+.TP 7
+.BI "Option \*qDragLockButtons\*q \*q" "M1" \*q
+Sets a \*qmaster drag lock button\*q that acts as a \*qMeta Key\*q
+indicating that the next button pressed is to be
+\*qdrag locked\*q. Property: "Evdev Drag Lock Buttons".
+.TP 7
+.BI "Option \*qEmulateWheel\*q \*q" boolean \*q
+Enable/disable "wheel" emulation.  Wheel emulation means emulating button
+press/release events when the mouse is moved while a specific real button
+is pressed.  Wheel button events (typically buttons 4 and 5) are
+usually used for scrolling.  Wheel emulation is useful for getting wheel-like
+behaviour with trackballs.  It can also be useful for mice with 4 or
+more buttons but no wheel.  See the description of the
+.BR EmulateWheelButton ,
+.BR EmulateWheelInertia ,
+.BR EmulateWheelTimeout ,
+.BR XAxisMapping ,
+and
+.B YAxisMapping
+options below.  Default: off. Property "Evdev Wheel Emulation".
+.TP 7
+.BI "Option \*qEmulateWheelButton\*q \*q" integer \*q
+Specifies which button must be held down to enable wheel emulation mode.
+While this button is down, X and/or Y pointer movement will generate button
+press/release events as specified for the
+.B XAxisMapping
+and
+.B YAxisMapping
+settings.  Default: 4. Property: "Evdev Wheel Emulation Button".
+.TP 7
+.BI "Option \*qEmulateWheelInertia\*q \*q" integer \*q
+Specifies how far (in pixels) the pointer must move to generate button
+press/release events in wheel emulation mode.  Default: 10. Property: "Evdev
+Wheel Emulation Inertia".
+.TP 7
+.BI "Option \*qEmulateWheelTimeout\*q \*q" integer \*q
+Specifies the time in milliseconds the
+.BR EmulateWheelButton
+must be pressed before wheel emulation is started. If the
+.BR EmulateWheelButton
+is released before this timeout, the original button press/release event
+is sent.  Default: 200. Property: "Evdev Wheel Emulation Timeout".
+.TP 7
+.BI "Option \*qXAxisMapping\*q \*q" "N1 N2" \*q
+Specifies which buttons are mapped to motion in the X direction in wheel
+emulation mode.  Button number
+.I N1
+is mapped to the negative X axis motion and button number
+.I N2
+is mapped to the positive X axis motion.  Default: no mapping. Property:
+"Evdev Wheel Emulation Axes".
+.TP 7
+.BI "Option \*qYAxisMapping\*q \*q" "N1 N2" \*q
+Specifies which buttons are mapped to motion in the Y direction in wheel
+emulation mode.  Button number
+.I N1
+is mapped to the negative Y axis motion and button number
+.I N2
+is mapped to the positive Y axis motion.  Default: "4 5". Property:
+"Evdev Wheel Emulation Axes".
+.TP 7
+.BI "Option \*qReopenAttempts\*q \*q" integer \*q
+Number of reopen attempts after a read error occurs on the device (e.g. after
+waking up from suspend). In between each attempt is a 100ms wait. Default: 10.
+.TP 7
+.BI "Option \*qInvertX\*q \*q" Bool \*q
+.TP 7
+.BI "Option \*qInvertY\*q \*q" Bool \*q
+Invert the given axis. Default: off. Property: "Evdev Axis Inversion".
+.TP 7
+.BI "Option \*qSwapAxes\*q \*q" Bool \*q
+Swap x/y axes. Default: off. Property: "Evdev Axes Swap".
+.TP 7
+.BI "Option \*qGrabDevice\*q \*q" boolean \*q
+Force a grab on the event device. Doing so will ensure that no other driver
+can initialise the same device and it will also stop the device from sending
+events to /dev/kbd or /dev/input/mice. Events from this device will not be
+sent to virtual devices (e.g. rfkill or the Macintosh mouse button emulation).
+Default disabled.
+
+.SH SUPPORTED PROPERTIES
+The following properties are provided by the
+.B evdev
+driver.
+.TP 7
+.BI "Evdev Middle Button Emulation"
+1 boolean value (8 bit, 0 or 1).
+.TP 7
+.BI "Evdev Middle Button Timeout"
+1 16-bit positive value.
+.TP 7
+.BI "Evdev Wheel Emulation"
+1 boolean value (8 bit, 0 or 1).
+.TP 7
+.BI "Evdev Wheel Emulation Axes"
+4 8-bit values, order X up, X down, Y up, Y down. 0 disables a value.
+.TP 7
+.BI "Evdev Wheel Emulation Inertia"
+1 16-bit positive value.
+.TP 7
+.BI "Evdev Wheel Emulation Timeout"
+1 16-bit positive value.
+.TP 7
+.BI "Evdev Wheel Emulation Button"
+1 8-bit value, allowed range 0-32, 0 disables the button.
+.TP 7
+.BI "Evdev Drag Lock Buttons"
+8-bit. Either 1 value or pairs of values. Value range 0-32, 0 disables a
+value.
+.TP 7
+.BI "Evdev Axis Inversion"
+2 boolean values (8 bit, 0 or 1), order X, Y. 1 inverts the axis.
+.BI "Evdev Axis Calibration"
+4 32-bit values, order min-x, max-x, min-y, max-y or 0 values to disable
+run-time axis calibration. This feature is required for devices that need to
+scale to a different coordinate system than originally reported to the X
+server, such as touchscreens that require run-time calibration.
+.TP 7
+.BI "Evdev Axis Swap"
+1 boolean values (8 bit, 0 or 1). 1 swaps x/y axes.
+
 .SH AUTHORS
 Kristian Høgsberg.
 .SH "SEE ALSO"
-__xservername__(__appmansuffix__), __xconfigfile__(__filemansuffix__), xorgconfig(__appmansuffix__), Xserver(__appmansuffix__), X(__miscmansuffix__),
+__xservername__(__appmansuffix__), __xconfigfile__(__filemansuffix__), Xserver(__appmansuffix__), X(__miscmansuffix__),
 README.mouse.
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,4 +28,11 @@
@DRIVER_NAME@_drv_la_LDFLAGS = -module -avoid-version
@DRIVER_NAME@_drv_ladir = @inputdir@

-@DRIVER_NAME@_drv_la_SOURCES = @DRIVER_NAME@.c
+INCLUDES=-I$(top_srcdir)/include/
+
+@DRIVER_NAME@_drv_la_SOURCES = @DRIVER_NAME@.c \
+                               @DRIVER_NAME@.h \
+                               emuMB.c \
+                               emuWheel.c \
+                               draglock.c
+
--- a/src/draglock.c
+++ b/src/draglock.c
@@ -0,0 +1,320 @@
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+ * Copyright 1993 by David Dawes <dawes@xfree86.org>
+ * Copyright 2002 by SuSE Linux AG, Author: Egbert Eich
+ * Copyright 1994-2002 by The XFree86 Project, Inc.
+ * Copyright 2002 by Paul Elliott
+ * (Ported from xf86-input-mouse, above copyrights taken from there)
+ * Copyright © 2008 University of South Australia
+ * Copyright 2008 by Chris Salch
+ * Copyright 2008 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of the authors
+ * not be used in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.  The authors make no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+/* Draglock code */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <xf86.h>
+#include <xf86Xinput.h>
+#include <X11/Xatom.h>
+#include <exevents.h>
+
+#include <evdev-properties.h>
+#include "evdev.h"
+
+#ifdef HAVE_PROPERTIES
+static Atom prop_dlock     = 0; /* Drag lock buttons. */
+#endif
+
+void EvdevDragLockLockButton(InputInfoPtr pInfo, unsigned int button);
+
+
+/* Setup and configuration code */
+void
+EvdevDragLockPreInit(InputInfoPtr pInfo)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    char *option_string = NULL;
+    int meta_button = 0;
+    int lock_button = 0;
+    char *next_num = NULL;
+    char *end_str = NULL;
+    BOOL pairs = FALSE;
+
+    option_string = xf86CheckStrOption(pInfo->options, "DragLockButtons",NULL);
+
+    if (!option_string)
+        return;
+
+    next_num = option_string;
+
+    /* Loop until we hit the end of our option string */
+    while (next_num != NULL) {
+        lock_button = 0;
+        meta_button = strtol(next_num, &end_str, 10);
+
+        /* check to see if we found anything */
+        if (next_num != end_str) {
+            /* setup for the next number */
+            next_num = end_str;
+        } else {
+            /* we have nothing more to parse, drop out of the loop */
+            next_num = NULL;
+        }
+
+        /* Check for a button to lock if we have a meta button */
+        if (meta_button != 0 && next_num != NULL ) {
+            lock_button = strtol(next_num, &end_str, 10);
+
+            /* check to see if we found anything */
+            if (next_num != end_str) {
+                /* setup for the next number */
+                next_num = end_str;
+            } else {
+                /* we have nothing more to parse, drop out of the loop */
+                next_num = NULL;
+            }
+        }
+
+        /* Ok, let the user know what we found on this look */
+        if (meta_button != 0) {
+            if (lock_button == 0) {
+                if (!pairs) {
+                    /* We only have a meta button */
+                    pEvdev->dragLock.meta = meta_button;
+
+                    xf86Msg(X_CONFIG, "%s: DragLockButtons : "
+                            "%i as meta\n",
+                            pInfo->name, meta_button);
+                } else {
+                    xf86Msg(X_ERROR, "%s: DragLockButtons : "
+                            "Incomplete pair specifying button pairs %s\n",
+                            pInfo->name, option_string);
+                }
+            } else {
+
+                /* Do bounds checking to make sure we don't crash */
+                if ((meta_button <= EVDEV_MAXBUTTONS) && (meta_button >= 0 ) &&
+                    (lock_button <= EVDEV_MAXBUTTONS) && (lock_button >= 0)) {
+
+                    xf86Msg(X_CONFIG, "%s: DragLockButtons : %i -> %i\n",
+                            pInfo->name, meta_button, lock_button);
+
+                    pEvdev->dragLock.lock_pair[meta_button - 1] = lock_button;
+                    pairs=TRUE;
+                } else {
+                    /* Let the user know something was wrong
+                       with this pair of buttons */
+                    xf86Msg(X_CONFIG, "%s: DragLockButtons : "
+                            "Invalid button pair %i -> %i\n",
+                            pInfo->name, meta_button, lock_button);
+                }
+            }
+        } else {
+            xf86Msg(X_ERROR, "%s: Found DragLockButtons "
+                    "with  invalid lock button string : '%s'\n",
+                    pInfo->name, option_string);
+
+            /* This should be the case anyhow, just make sure */
+            next_num = NULL;
+        }
+
+        /* Check for end of string, to avoid annoying error */
+        if (next_num != NULL && *next_num == '\0')
+            next_num = NULL;
+    }
+}
+
+/* Updates DragLock button state and firest button event messges */
+void
+EvdevDragLockLockButton(InputInfoPtr pInfo, unsigned int button)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    BOOL state=0;
+
+    /* update button state */
+    state = pEvdev->dragLock.lock_state[button - 1] ? FALSE : TRUE;
+    pEvdev->dragLock.lock_state[button - 1] = state;
+
+    xf86PostButtonEvent(pInfo->dev, 0, button, state, 0, 0);
+}
+
+/* Filter button presses looking for either a meta button or the
+ * control of a button pair.
+ *
+ * @param button button number (1 for left, 3 for right)
+ * @param value TRUE if button press, FALSE if release
+ *
+ * @return TRUE if the event was swallowed here, FALSE otherwise.
+ */
+BOOL
+EvdevDragLockFilterEvent(InputInfoPtr pInfo, unsigned int button, int value)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+
+    if (button == 0)
+        return FALSE;
+
+    /* Do we have a single meta key or
+       several button pairings? */
+    if (pEvdev->dragLock.meta != 0) {
+
+        if (pEvdev->dragLock.meta == button) {
+
+            /* setup up for button lock */
+            if (value)
+                pEvdev->dragLock.meta_state = TRUE;
+
+            return TRUE;
+        } else if (pEvdev->dragLock.meta_state) { /* waiting to lock */
+
+            pEvdev->dragLock.meta_state = FALSE;
+
+            EvdevDragLockLockButton(pInfo, button);
+
+            return TRUE;
+        }
+    } else if (pEvdev->dragLock.lock_pair[button - 1] && value) {
+        /* A meta button in a meta/lock pair was pressed */
+        EvdevDragLockLockButton(pInfo, pEvdev->dragLock.lock_pair[button - 1]);
+        return TRUE;
+    }
+
+    /* Eat events for buttons that are locked */
+    if (pEvdev->dragLock.lock_state[button - 1])
+        return TRUE;
+
+    return FALSE;
+}
+
+#ifdef HAVE_PROPERTIES
+/**
+ * Set the drag lock property.
+ * If only one value is supplied, then this is used as the meta button.
+ * If more than one value is supplied, then each value is the drag lock button
+ * for the pair. 0 disables a pair.
+ * i.e. to set bt 3 to draglock button 1, supply 0,0,1
+ */
+int
+EvdevDragLockSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
+                         BOOL checkonly)
+{
+    InputInfoPtr pInfo  = dev->public.devicePrivate;
+    EvdevPtr     pEvdev = pInfo->private;
+
+    if (atom == prop_dlock)
+    {
+        int i;
+
+        if (val->format != 8 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        /* Don't allow changes while a lock is active */
+        if (pEvdev->dragLock.meta)
+        {
+            if (pEvdev->dragLock.meta_state)
+                return BadAccess;
+        } else
+        {
+            for (i = 0; i < EVDEV_MAXBUTTONS; i++)
+                if (pEvdev->dragLock.lock_state[i])
+                    return BadValue;
+        }
+
+        if (val->size == 0)
+            return BadMatch;
+        else if (val->size == 1)
+        {
+            int meta = *((CARD8*)val->data);
+            if (meta > EVDEV_MAXBUTTONS)
+                return BadValue;
+
+            if (!checkonly)
+            {
+                pEvdev->dragLock.meta = meta;
+                memset(pEvdev->dragLock.lock_pair, 0, sizeof(pEvdev->dragLock.lock_pair));
+            }
+        } else
+        {
+            CARD8* vals = (CARD8*)val->data;
+
+            for (i = 0; i < val->size && i < EVDEV_MAXBUTTONS; i++)
+                if (vals[i] > EVDEV_MAXBUTTONS)
+                    return BadValue;
+
+            if (!checkonly)
+            {
+                pEvdev->dragLock.meta = 0;
+                memset(pEvdev->dragLock.lock_pair, 0, sizeof(pEvdev->dragLock.lock_pair));
+
+                for (i = 0; i < val->size && i < EVDEV_MAXBUTTONS; i++)
+                    pEvdev->dragLock.lock_pair[i] = vals[i];
+            }
+        }
+    }
+
+    return Success;
+}
+
+/**
+ * Initialise property for drag lock buttons setting.
+ */
+void
+EvdevDragLockInitProperty(DeviceIntPtr dev)
+{
+    InputInfoPtr pInfo  = dev->public.devicePrivate;
+    EvdevPtr     pEvdev = pInfo->private;
+
+    if (!dev->button) /* don't init prop for keyboards */
+        return;
+
+    prop_dlock = MakeAtom(EVDEV_PROP_DRAGLOCK, strlen(EVDEV_PROP_DRAGLOCK), TRUE);
+    if (pEvdev->dragLock.meta)
+    {
+        XIChangeDeviceProperty(dev, prop_dlock, XA_INTEGER, 8,
+                               PropModeReplace, 1, &pEvdev->dragLock.meta,
+                               FALSE);
+    } else {
+        int highest = 0;
+        int i;
+        CARD8 pair[EVDEV_MAXBUTTONS] = {0};
+
+        for (i = 0; i < EVDEV_MAXBUTTONS; i++)
+        {
+            if (pEvdev->dragLock.lock_pair[i])
+                highest = i;
+            pair[i] = pEvdev->dragLock.lock_pair[i];
+        }
+
+        XIChangeDeviceProperty(dev, prop_dlock, XA_INTEGER, 8, PropModeReplace,
+                               highest + 1, pair, FALSE);
+    }
+
+    XISetDevicePropertyDeletable(dev, prop_dlock, FALSE);
+
+    XIRegisterPropertyHandler(dev, EvdevDragLockSetProperty, NULL, NULL);
+}
+
+#endif
--- a/src/emuMB.c
+++ b/src/emuMB.c
@@ -0,0 +1,415 @@
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+ * Copyright 1993 by David Dawes <dawes@xfree86.org>
+ * Copyright 2002 by SuSE Linux AG, Author: Egbert Eich
+ * Copyright 1994-2002 by The XFree86 Project, Inc.
+ * Copyright 2002 by Paul Elliott
+ * (Ported from xf86-input-mouse, above copyrights taken from there)
+ * Copyright © 2008 University of South Australia
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of the authors
+ * not be used in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.  The authors make no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+/* Middle mouse button emulation code. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <X11/Xatom.h>
+#include <xf86.h>
+#include <xf86Xinput.h>
+#include <exevents.h>
+
+#include <evdev-properties.h>
+#include "evdev.h"
+
+enum {
+    MBEMU_DISABLED = 0,
+    MBEMU_ENABLED,
+    MBEMU_AUTO
+};
+
+#ifdef HAVE_PROPERTIES
+static Atom prop_mbemu     = 0; /* Middle button emulation on/off property */
+static Atom prop_mbtimeout = 0; /* Middle button timeout property */
+#endif
+/*
+ * Lets create a simple finite-state machine for 3 button emulation:
+ *
+ * We track buttons 1 and 3 (left and right).  There are 11 states:
+ *   0 ground           - initial state
+ *   1 delayed left     - left pressed, waiting for right
+ *   2 delayed right    - right pressed, waiting for left
+ *   3 pressed middle   - right and left pressed, emulated middle sent
+ *   4 pressed left     - left pressed and sent
+ *   5 pressed right    - right pressed and sent
+ *   6 released left    - left released after emulated middle
+ *   7 released right   - right released after emulated middle
+ *   8 repressed left   - left pressed after released left
+ *   9 repressed right  - right pressed after released right
+ *  10 pressed both     - both pressed, not emulating middle
+ *
+ * At each state, we need handlers for the following events
+ *   0: no buttons down
+ *   1: left button down
+ *   2: right button down
+ *   3: both buttons down
+ *   4: emulate3Timeout passed without a button change
+ * Note that button events are not deltas, they are the set of buttons being
+ * pressed now.  It's possible (ie, mouse hardware does it) to go from (eg)
+ * left down to right down without anything in between, so all cases must be
+ * handled.
+ *
+ * a handler consists of three values:
+ *   0: action1
+ *   1: action2
+ *   2: new emulation state
+ *
+ * action > 0: ButtonPress
+ * action = 0: nothing
+ * action < 0: ButtonRelease
+ *
+ * The comment preceeding each section is the current emulation state.
+ * The comments to the right are of the form
+ *      <button state> (<events>) -> <new emulation state>
+ * which should be read as
+ *      If the buttons are in <button state>, generate <events> then go to
+ *      <new emulation state>.
+ */
+static signed char stateTab[11][5][3] = {
+/* 0 ground */
+  {
+    {  0,  0,  0 },   /* nothing -> ground (no change) */
+    {  0,  0,  1 },   /* left -> delayed left */
+    {  0,  0,  2 },   /* right -> delayed right */
+    {  2,  0,  3 },   /* left & right (middle press) -> pressed middle */
+    {  0,  0, -1 }    /* timeout N/A */
+  },
+/* 1 delayed left */
+  {
+    {  1, -1,  0 },   /* nothing (left event) -> ground */
+    {  0,  0,  1 },   /* left -> delayed left (no change) */
+    {  1, -1,  2 },   /* right (left event) -> delayed right */
+    {  2,  0,  3 },   /* left & right (middle press) -> pressed middle */
+    {  1,  0,  4 },   /* timeout (left press) -> pressed left */
+  },
+/* 2 delayed right */
+  {
+    {  3, -3,  0 },   /* nothing (right event) -> ground */
+    {  3, -3,  1 },   /* left (right event) -> delayed left (no change) */
+    {  0,  0,  2 },   /* right -> delayed right (no change) */
+    {  2,  0,  3 },   /* left & right (middle press) -> pressed middle */
+    {  3,  0,  5 },   /* timeout (right press) -> pressed right */
+  },
+/* 3 pressed middle */
+  {
+    { -2,  0,  0 },   /* nothing (middle release) -> ground */
+    {  0,  0,  7 },   /* left -> released right */
+    {  0,  0,  6 },   /* right -> released left */
+    {  0,  0,  3 },   /* left & right -> pressed middle (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 4 pressed left */
+  {
+    { -1,  0,  0 },   /* nothing (left release) -> ground */
+    {  0,  0,  4 },   /* left -> pressed left (no change) */
+    { -1,  0,  2 },   /* right (left release) -> delayed right */
+    {  3,  0, 10 },   /* left & right (right press) -> pressed both */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 5 pressed right */
+  {
+    { -3,  0,  0 },   /* nothing (right release) -> ground */
+    { -3,  0,  1 },   /* left (right release) -> delayed left */
+    {  0,  0,  5 },   /* right -> pressed right (no change) */
+    {  1,  0, 10 },   /* left & right (left press) -> pressed both */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 6 released left */
+  {
+    { -2,  0,  0 },   /* nothing (middle release) -> ground */
+    { -2,  0,  1 },   /* left (middle release) -> delayed left */
+    {  0,  0,  6 },   /* right -> released left (no change) */
+    {  1,  0,  8 },   /* left & right (left press) -> repressed left */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 7 released right */
+  {
+    { -2,  0,  0 },   /* nothing (middle release) -> ground */
+    {  0,  0,  7 },   /* left -> released right (no change) */
+    { -2,  0,  2 },   /* right (middle release) -> delayed right */
+    {  3,  0,  9 },   /* left & right (right press) -> repressed right */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 8 repressed left */
+  {
+    { -2, -1,  0 },   /* nothing (middle release, left release) -> ground */
+    { -2,  0,  4 },   /* left (middle release) -> pressed left */
+    { -1,  0,  6 },   /* right (left release) -> released left */
+    {  0,  0,  8 },   /* left & right -> repressed left (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 9 repressed right */
+  {
+    { -2, -3,  0 },   /* nothing (middle release, right release) -> ground */
+    { -3,  0,  7 },   /* left (right release) -> released right */
+    { -2,  0,  5 },   /* right (middle release) -> pressed right */
+    {  0,  0,  9 },   /* left & right -> repressed right (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 10 pressed both */
+  {
+    { -1, -3,  0 },   /* nothing (left release, right release) -> ground */
+    { -3,  0,  4 },   /* left (right release) -> pressed left */
+    { -1,  0,  5 },   /* right (left release) -> pressed right */
+    {  0,  0, 10 },   /* left & right -> pressed both (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+};
+
+
+int
+EvdevMBEmuTimer(InputInfoPtr pInfo)
+{
+    EvdevPtr pEvdev = pInfo->private;
+    int	sigstate;
+    int id;
+
+    sigstate = xf86BlockSIGIO ();
+
+    pEvdev->emulateMB.pending = FALSE;
+    if ((id = stateTab[pEvdev->emulateMB.state][4][0]) != 0) {
+        xf86PostButtonEvent(pInfo->dev, 0, abs(id), (id >= 0), 0, 0);
+        pEvdev->emulateMB.state =
+            stateTab[pEvdev->emulateMB.state][4][2];
+    } else {
+        ErrorF("Got unexpected buttonTimer in state %d\n",
+                pEvdev->emulateMB.state);
+    }
+
+    xf86UnblockSIGIO (sigstate);
+    return 0;
+}
+
+
+/**
+ * Emulate a middle button on button press.
+ *
+ * @param code button number (1 for left, 3 for right)
+ * @param press TRUE if press, FALSE if release.
+ *
+ * @return TRUE if event was swallowed by middle mouse button emulation, FALSE
+ * otherwise.
+ */
+BOOL
+EvdevMBEmuFilterEvent(InputInfoPtr pInfo, int button, BOOL press)
+{
+    EvdevPtr pEvdev = pInfo->private;
+    int id;
+    int *btstate;
+    int ret = FALSE;
+
+    if (!pEvdev->emulateMB.enabled)
+        return ret;
+
+    if (button == 2) {
+        EvdevMBEmuEnable(pInfo, FALSE);
+        return ret;
+    }
+
+    /* don't care about other buttons */
+    if (button != 1 && button != 3)
+        return ret;
+
+    btstate = &pEvdev->emulateMB.buttonstate;
+    if (press)
+        *btstate |= (button == 1) ? 0x1 : 0x2;
+    else
+        *btstate &= (button == 1) ? ~0x1 : ~0x2;
+
+    if ((id = stateTab[pEvdev->emulateMB.state][*btstate][0]) != 0)
+    {
+        xf86PostButtonEvent(pInfo->dev, 0, abs(id), (id >= 0), 0, 0);
+        ret = TRUE;
+    }
+    if ((id = stateTab[pEvdev->emulateMB.state][*btstate][1]) != 0)
+    {
+        xf86PostButtonEvent(pInfo->dev, 0, abs(id), (id >= 0), 0, 0);
+        ret = TRUE;
+    }
+
+    pEvdev->emulateMB.state =
+        stateTab[pEvdev->emulateMB.state][*btstate][2];
+
+    if (stateTab[pEvdev->emulateMB.state][4][0] != 0) {
+        pEvdev->emulateMB.expires = GetTimeInMillis () + pEvdev->emulateMB.timeout;
+        pEvdev->emulateMB.pending = TRUE;
+        ret = TRUE;
+    } else {
+        pEvdev->emulateMB.pending = FALSE;
+    }
+
+    return ret;
+}
+
+
+void EvdevMBEmuWakeupHandler(pointer data,
+                             int i,
+                             pointer LastSelectMask)
+{
+    InputInfoPtr pInfo = (InputInfoPtr)data;
+    EvdevPtr     pEvdev = (EvdevPtr)pInfo->private;
+    int ms;
+
+    if (pEvdev->emulateMB.pending)
+    {
+        ms = pEvdev->emulateMB.expires - GetTimeInMillis();
+        if (ms <= 0)
+            EvdevMBEmuTimer(pInfo);
+    }
+}
+
+void EvdevMBEmuBlockHandler(pointer data,
+                            struct timeval **waitTime,
+                            pointer LastSelectMask)
+{
+    InputInfoPtr    pInfo = (InputInfoPtr) data;
+    EvdevPtr        pEvdev= (EvdevPtr) pInfo->private;
+    int             ms;
+
+    if (pEvdev->emulateMB.pending)
+    {
+        ms = pEvdev->emulateMB.expires - GetTimeInMillis ();
+        if (ms <= 0)
+            ms = 0;
+        AdjustWaitForDelay (waitTime, ms);
+    }
+}
+
+void
+EvdevMBEmuPreInit(InputInfoPtr pInfo)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    pEvdev->emulateMB.enabled = MBEMU_AUTO;
+
+    if (xf86FindOption(pInfo->options, "Emulate3Buttons"))
+    {
+        pEvdev->emulateMB.enabled = xf86SetBoolOption(pInfo->options,
+                                                      "Emulate3Buttons",
+                                                      MBEMU_ENABLED);
+        xf86Msg(X_INFO, "%s: Forcing middle mouse button emulation %s.\n",
+                pInfo->name, (pEvdev->emulateMB.enabled) ? "on" : "off");
+    }
+
+    pEvdev->emulateMB.timeout = xf86SetIntOption(pInfo->options,
+                                                 "Emulate3Timeout", 50);
+}
+
+void
+EvdevMBEmuOn(InputInfoPtr pInfo)
+{
+    RegisterBlockAndWakeupHandlers (EvdevMBEmuBlockHandler,
+                                    EvdevMBEmuWakeupHandler,
+                                    (pointer)pInfo);
+}
+
+void
+EvdevMBEmuFinalize(InputInfoPtr pInfo)
+{
+    RemoveBlockAndWakeupHandlers (EvdevMBEmuBlockHandler,
+                                  EvdevMBEmuWakeupHandler,
+                                  (pointer)pInfo);
+
+}
+
+/* Enable/disable middle mouse button emulation. */
+void
+EvdevMBEmuEnable(InputInfoPtr pInfo, BOOL enable)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    if (pEvdev->emulateMB.enabled == MBEMU_AUTO)
+        pEvdev->emulateMB.enabled = enable;
+}
+
+
+#ifdef HAVE_PROPERTIES
+int
+EvdevMBEmuSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
+                      BOOL checkonly)
+{
+    InputInfoPtr pInfo  = dev->public.devicePrivate;
+    EvdevPtr     pEvdev = pInfo->private;
+
+    if (atom == prop_mbemu)
+    {
+        if (val->format != 8 || val->size != 1 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        if (!checkonly)
+            pEvdev->emulateMB.enabled = *((BOOL*)val->data);
+    } else if (atom == prop_mbtimeout)
+    {
+        if (val->format != 32 || val->size != 1 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        if (!checkonly)
+            pEvdev->emulateMB.timeout = *((CARD32*)val->data);
+    }
+
+    return Success;
+}
+
+/**
+ * Initialise property for MB emulation on/off.
+ */
+void
+EvdevMBEmuInitProperty(DeviceIntPtr dev)
+{
+    InputInfoPtr pInfo  = dev->public.devicePrivate;
+    EvdevPtr     pEvdev = pInfo->private;
+    int          rc;
+
+    if (!dev->button) /* don't init prop for keyboards */
+        return;
+
+    prop_mbemu = MakeAtom(EVDEV_PROP_MIDBUTTON, strlen(EVDEV_PROP_MIDBUTTON), TRUE);
+    rc = XIChangeDeviceProperty(dev, prop_mbemu, XA_INTEGER, 8,
+                                PropModeReplace, 1,
+                                &pEvdev->emulateMB.enabled,
+                                FALSE);
+    if (rc != Success)
+        return;
+    XISetDevicePropertyDeletable(dev, prop_mbemu, FALSE);
+
+    prop_mbtimeout = MakeAtom(EVDEV_PROP_MIDBUTTON_TIMEOUT,
+                              strlen(EVDEV_PROP_MIDBUTTON_TIMEOUT),
+                              TRUE);
+    rc = XIChangeDeviceProperty(dev, prop_mbtimeout, XA_INTEGER, 32, PropModeReplace, 1,
+                                &pEvdev->emulateMB.timeout, FALSE);
+
+    if (rc != Success)
+        return;
+    XISetDevicePropertyDeletable(dev, prop_mbtimeout, FALSE);
+
+    XIRegisterPropertyHandler(dev, EvdevMBEmuSetProperty, NULL, NULL);
+}
+#endif
--- a/src/emuWheel.c
+++ b/src/emuWheel.c
@@ -0,0 +1,472 @@
+/*
+* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+* Copyright 1993 by David Dawes <dawes@xfree86.org>
+* Copyright 2002 by SuSE Linux AG, Author: Egbert Eich
+* Copyright 1994-2002 by The XFree86 Project, Inc.
+* Copyright 2002 by Paul Elliott
+* (Ported from xf86-input-mouse, above copyrights taken from there)
+* Copyright 2008 by Chris Salch
+* Copyright © 2008 Red Hat, Inc.
+*
+* Permission to use, copy, modify, distribute, and sell this software
+* and its documentation for any purpose is hereby granted without
+* fee, provided that the above copyright notice appear in all copies
+* and that both that copyright notice and this permission notice
+* appear in supporting documentation, and that the name of the authors
+* not be used in advertising or publicity pertaining to distribution of the
+* software without specific, written prior permission.  The authors make no
+* representations about the suitability of this software for any
+* purpose.  It is provided "as is" without express or implied
+* warranty.
+*
+* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*
+*/
+
+/* Mouse wheel emulation code. */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <X11/Xatom.h>
+#include <xf86.h>
+#include <xf86Xinput.h>
+#include <exevents.h>
+
+#include <evdev-properties.h>
+#include "evdev.h"
+
+#define WHEEL_NOT_CONFIGURED 0
+
+#ifdef HAVE_PROPERTIES
+static Atom prop_wheel_emu      = 0;
+static Atom prop_wheel_axismap  = 0;
+static Atom prop_wheel_inertia  = 0;
+static Atom prop_wheel_timeout  = 0;
+static Atom prop_wheel_button   = 0;
+#endif
+
+/* Local Funciton Prototypes */
+static BOOL EvdevWheelEmuHandleButtonMap(InputInfoPtr pInfo, WheelAxisPtr pAxis, char *axis_name);
+static void EvdevWheelEmuInertia(InputInfoPtr pInfo, WheelAxisPtr axis, int value);
+
+/* Filter mouse button events */
+BOOL
+EvdevWheelEmuFilterButton(InputInfoPtr pInfo, unsigned int button, int value)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    int ms;
+
+    /* Has wheel emulation been configured to be enabled? */
+    if (!pEvdev->emulateWheel.enabled)
+	return FALSE;
+
+    /* Check for EmulateWheelButton */
+    if (pEvdev->emulateWheel.button == button) {
+	pEvdev->emulateWheel.button_state = value;
+
+        if (value)
+            /* Start the timer when the button is pressed */
+            pEvdev->emulateWheel.expires = pEvdev->emulateWheel.timeout +
+                                           GetTimeInMillis();
+        else {
+            ms = pEvdev->emulateWheel.expires - GetTimeInMillis();
+            if (ms > 0) {
+                /*
+                 * If the button is released early enough emit the button
+                 * press/release events
+                 */
+                xf86PostButtonEvent(pInfo->dev, 0, button, 1, 0, 0);
+                xf86PostButtonEvent(pInfo->dev, 0, button, 0, 0, 0);
+            }
+        }
+
+	return TRUE;
+    }
+
+    /* Don't care about this event */
+    return FALSE;
+}
+
+/* Filter mouse wheel events */
+BOOL
+EvdevWheelEmuFilterMotion(InputInfoPtr pInfo, struct input_event *pEv)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    WheelAxisPtr pAxis = NULL;
+    int value = pEv->value;
+    int ms;
+
+    /* Has wheel emulation been configured to be enabled? */
+    if (!pEvdev->emulateWheel.enabled)
+	return FALSE;
+
+    /* Handle our motion events if the emuWheel button is pressed*/
+    if (pEvdev->emulateWheel.button_state) {
+        /* Just return if the timeout hasn't expired yet */
+        ms = pEvdev->emulateWheel.expires - GetTimeInMillis();
+        if (ms > 0)
+            return TRUE;
+
+	/* We don't want to intercept real mouse wheel events */
+	switch(pEv->code) {
+	case REL_X:
+	    pAxis = &(pEvdev->emulateWheel.X);
+	    break;
+
+	case REL_Y:
+	    pAxis = &(pEvdev->emulateWheel.Y);
+	    break;
+
+	default:
+	    break;
+	}
+
+	/* If we found REL_X or REL_Y, emulate a mouse wheel */
+	if (pAxis)
+	    EvdevWheelEmuInertia(pInfo, pAxis, value);
+
+	/* Eat motion events while emulateWheel button pressed. */
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+/* Simulate inertia for our emulated mouse wheel */
+static void
+EvdevWheelEmuInertia(InputInfoPtr pInfo, WheelAxisPtr axis, int value)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    int button;
+    int inertia;
+
+    /* if this axis has not been configured, just eat the motion */
+    if (!axis->up_button)
+	return;
+
+    axis->traveled_distance += value;
+
+    if (axis->traveled_distance < 0) {
+	button = axis->up_button;
+	inertia = -pEvdev->emulateWheel.inertia;
+    } else {
+	button = axis->down_button;
+	inertia = pEvdev->emulateWheel.inertia;
+    }
+
+    /* Produce button press events for wheel motion */
+    while(abs(axis->traveled_distance) > pEvdev->emulateWheel.inertia) {
+
+	axis->traveled_distance -= inertia;
+	xf86PostButtonEvent(pInfo->dev, 0, button, 1, 0, 0);
+	xf86PostButtonEvent(pInfo->dev, 0, button, 0, 0, 0);
+    }
+}
+
+/* Handle button mapping here to avoid code duplication,
+returns true if a button mapping was found. */
+static BOOL
+EvdevWheelEmuHandleButtonMap(InputInfoPtr pInfo, WheelAxisPtr pAxis, char* axis_name)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    char *option_string;
+
+    pAxis->up_button = WHEEL_NOT_CONFIGURED;
+
+    /* Check to see if there is configuration for this axis */
+    option_string = xf86SetStrOption(pInfo->options, axis_name, NULL);
+    if (option_string) {
+	int up_button = 0;
+	int down_button = 0;
+	char *msg = NULL;
+
+	if ((sscanf(option_string, "%d %d", &up_button, &down_button) == 2) &&
+	    ((up_button > 0) && (up_button <= EVDEV_MAXBUTTONS)) &&
+	    ((down_button > 0) && (down_button <= EVDEV_MAXBUTTONS))) {
+
+	    /* Use xstrdup to allocate a string for us */
+	    msg = xstrdup("buttons XX and YY");
+
+	    if (msg)
+		sprintf(msg, "buttons %d and %d", up_button, down_button);
+
+	    pAxis->up_button = up_button;
+	    pAxis->down_button = down_button;
+
+	    /* Update the number of buttons if needed */
+	    if (up_button > pEvdev->buttons) pEvdev->buttons = up_button;
+	    if (down_button > pEvdev->buttons) pEvdev->buttons = down_button;
+
+	} else {
+	    xf86Msg(X_WARNING, "%s: Invalid %s value:\"%s\"\n",
+		    pInfo->name, axis_name, option_string);
+
+	}
+
+	/* Clean up and log what happened */
+	if (msg) {
+	    xf86Msg(X_CONFIG, "%s: %s: %s\n",pInfo->name, axis_name, msg);
+	    xfree(msg);
+	    return TRUE;
+	}
+    }
+    return FALSE;
+}
+
+/* Setup the basic configuration options used by mouse wheel emulation */
+void
+EvdevWheelEmuPreInit(InputInfoPtr pInfo)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    char val[4];
+    int wheelButton;
+    int inertia;
+    int timeout;
+
+    val[0] = 0;
+    val[1] = 0;
+
+    if (xf86SetBoolOption(pInfo->options, "EmulateWheel", FALSE)) {
+	pEvdev->emulateWheel.enabled = TRUE;
+    } else
+        pEvdev->emulateWheel.enabled = FALSE;
+
+    wheelButton = xf86SetIntOption(pInfo->options, "EmulateWheelButton", 4);
+
+    if ((wheelButton < 0) || (wheelButton > EVDEV_MAXBUTTONS)) {
+        xf86Msg(X_WARNING, "%s: Invalid EmulateWheelButton value: %d\n",
+                pInfo->name, wheelButton);
+        xf86Msg(X_WARNING, "%s: Wheel emulation disabled.\n", pInfo->name);
+
+        pEvdev->emulateWheel.enabled = FALSE;
+    }
+
+    pEvdev->emulateWheel.button = wheelButton;
+
+    inertia = xf86SetIntOption(pInfo->options, "EmulateWheelInertia", 10);
+
+    if (inertia <= 0) {
+        xf86Msg(X_WARNING, "%s: Invalid EmulateWheelInertia value: %d\n",
+                pInfo->name, inertia);
+        xf86Msg(X_WARNING, "%s: Using built-in inertia value.\n",
+                pInfo->name);
+
+        inertia = 10;
+    }
+
+    pEvdev->emulateWheel.inertia = inertia;
+
+    timeout = xf86SetIntOption(pInfo->options, "EmulateWheelTimeout", 200);
+
+    if (timeout < 0) {
+        xf86Msg(X_WARNING, "%s: Invalid EmulateWheelTimeout value: %d\n",
+                pInfo->name, timeout);
+        xf86Msg(X_WARNING, "%s: Using built-in timeout value.\n",
+                pInfo->name);
+
+        timeout = 200;
+    }
+
+    pEvdev->emulateWheel.timeout = timeout;
+
+    /* Configure the Y axis or default it */
+    if (!EvdevWheelEmuHandleButtonMap(pInfo, &(pEvdev->emulateWheel.Y),
+                "YAxisMapping")) {
+        /* Default the Y axis to sane values */
+        pEvdev->emulateWheel.Y.up_button = 4;
+        pEvdev->emulateWheel.Y.down_button = 5;
+
+        /* Simpler to check just the largest value in this case */
+        /* XXX: we should post this to the server */
+        if (5 > pEvdev->buttons)
+            pEvdev->buttons = 5;
+
+        /* Display default Configuration */
+        xf86Msg(X_CONFIG, "%s: YAxisMapping: buttons %d and %d\n",
+                pInfo->name, pEvdev->emulateWheel.Y.up_button,
+                pEvdev->emulateWheel.Y.down_button);
+    }
+
+
+    /* This axis should default to an unconfigured state as most people
+       are not going to expect a Horizontal wheel. */
+    EvdevWheelEmuHandleButtonMap(pInfo, &(pEvdev->emulateWheel.X),
+            "XAxisMapping");
+
+    /* Used by the inertia code */
+    pEvdev->emulateWheel.X.traveled_distance = 0;
+    pEvdev->emulateWheel.Y.traveled_distance = 0;
+
+    xf86Msg(X_CONFIG, "%s: EmulateWheelButton: %d, "
+            "EmulateWheelInertia: %d, "
+            "EmulateWheelTimeout: %d\n",
+            pInfo->name, pEvdev->emulateWheel.button, inertia, timeout);
+}
+
+#ifdef HAVE_PROPERTIES
+int
+EvdevWheelEmuSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
+                         BOOL checkonly)
+{
+    InputInfoPtr pInfo  = dev->public.devicePrivate;
+    EvdevPtr     pEvdev = pInfo->private;
+
+    if (atom == prop_wheel_emu)
+    {
+        if (val->format != 8 || val->size != 1 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        if (!checkonly)
+        {
+            pEvdev->emulateWheel.enabled = *((BOOL*)val->data);
+            /* Don't enable with zero inertia, otherwise we may get stuck in an
+             * infinite loop */
+            if (pEvdev->emulateWheel.inertia <= 0)
+            {
+                pEvdev->emulateWheel.inertia = 10;
+                /* We may get here before the property is actually enabled */
+                if (prop_wheel_inertia)
+                    XIChangeDeviceProperty(dev, prop_wheel_inertia, XA_INTEGER,
+                            16, PropModeReplace, 1,
+                            &pEvdev->emulateWheel.inertia, TRUE);
+            }
+
+            /* Don't enable with negative timeout */
+            if (pEvdev->emulateWheel.timeout < 0)
+            {
+                pEvdev->emulateWheel.timeout = 200;
+                XIChangeDeviceProperty(dev, prop_wheel_timeout, XA_INTEGER, 16,
+                        PropModeReplace, 1,
+                        &pEvdev->emulateWheel.timeout, TRUE);
+            }
+        }
+    }
+    else if (atom == prop_wheel_button)
+    {
+        int bt;
+
+        if (val->format != 8 || val->size != 1 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        bt = *((CARD8*)val->data);
+
+        if (bt < 0 || bt >= EVDEV_MAXBUTTONS)
+            return BadValue;
+
+        if (!checkonly)
+            pEvdev->emulateWheel.button = bt;
+    } else if (atom == prop_wheel_axismap)
+    {
+        if (val->format != 8 || val->size != 4 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        if (!checkonly)
+        {
+            pEvdev->emulateWheel.X.up_button = *((CARD8*)val->data);
+            pEvdev->emulateWheel.X.down_button = *(((CARD8*)val->data) + 1);
+            pEvdev->emulateWheel.Y.up_button = *(((CARD8*)val->data) + 2);
+            pEvdev->emulateWheel.Y.down_button = *(((CARD8*)val->data) + 3);
+        }
+    } else if (atom == prop_wheel_inertia)
+    {
+        int inertia;
+
+        if (val->format != 16 || val->size != 1 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        inertia = *((CARD16*)val->data);
+
+        if (inertia < 0)
+            return BadValue;
+
+        if (!checkonly)
+            pEvdev->emulateWheel.inertia = inertia;
+    } else if (atom == prop_wheel_timeout)
+    {
+        int timeout;
+
+        if (val->format != 16 || val->size != 1 || val->type != XA_INTEGER)
+            return BadMatch;
+
+        timeout = *((CARD16*)val->data);
+
+        if (timeout < 0)
+            return BadValue;
+
+        if (!checkonly)
+            pEvdev->emulateWheel.timeout = timeout;
+    }
+    return Success;
+}
+
+void
+EvdevWheelEmuInitProperty(DeviceIntPtr dev)
+{
+    InputInfoPtr pInfo  = dev->public.devicePrivate;
+    EvdevPtr     pEvdev = pInfo->private;
+    int          rc     = TRUE;
+    char         vals[4];
+
+    if (!dev->button) /* don't init prop for keyboards */
+        return;
+
+    prop_wheel_emu = MakeAtom(EVDEV_PROP_WHEEL, strlen(EVDEV_PROP_WHEEL), TRUE);
+    rc = XIChangeDeviceProperty(dev, prop_wheel_emu, XA_INTEGER, 8,
+                                PropModeReplace, 1,
+                                &pEvdev->emulateWheel.enabled, FALSE);
+    if (rc != Success)
+        return;
+
+    XISetDevicePropertyDeletable(dev, prop_wheel_emu, FALSE);
+
+    vals[0] = pEvdev->emulateWheel.X.up_button;
+    vals[1] = pEvdev->emulateWheel.X.down_button;
+    vals[2] = pEvdev->emulateWheel.Y.up_button;
+    vals[3] = pEvdev->emulateWheel.Y.down_button;
+
+    prop_wheel_axismap = MakeAtom(EVDEV_PROP_WHEEL_AXES, strlen(EVDEV_PROP_WHEEL_AXES), TRUE);
+    rc = XIChangeDeviceProperty(dev, prop_wheel_axismap, XA_INTEGER, 8,
+                                PropModeReplace, 4, vals, FALSE);
+
+    if (rc != Success)
+        return;
+
+    XISetDevicePropertyDeletable(dev, prop_wheel_axismap, FALSE);
+
+    prop_wheel_inertia = MakeAtom(EVDEV_PROP_WHEEL_INERTIA, strlen(EVDEV_PROP_WHEEL_INERTIA), TRUE);
+    rc = XIChangeDeviceProperty(dev, prop_wheel_inertia, XA_INTEGER, 16,
+                                PropModeReplace, 1,
+                                &pEvdev->emulateWheel.inertia, FALSE);
+    if (rc != Success)
+        return;
+
+    XISetDevicePropertyDeletable(dev, prop_wheel_inertia, FALSE);
+
+    prop_wheel_timeout = MakeAtom(EVDEV_PROP_WHEEL_TIMEOUT, strlen(EVDEV_PROP_WHEEL_TIMEOUT), TRUE);
+    rc = XIChangeDeviceProperty(dev, prop_wheel_timeout, XA_INTEGER, 16,
+                                PropModeReplace, 1,
+                                &pEvdev->emulateWheel.timeout, FALSE);
+    if (rc != Success)
+        return;
+
+    XISetDevicePropertyDeletable(dev, prop_wheel_timeout, FALSE);
+
+    prop_wheel_button = MakeAtom(EVDEV_PROP_WHEEL_BUTTON, strlen(EVDEV_PROP_WHEEL_BUTTON), TRUE);
+    rc = XIChangeDeviceProperty(dev, prop_wheel_button, XA_INTEGER, 8,
+                                PropModeReplace, 1,
+                                &pEvdev->emulateWheel.button, FALSE);
+    if (rc != Success)
+        return;
+
+    XISetDevicePropertyDeletable(dev, prop_wheel_button, FALSE);
+
+    XIRegisterPropertyHandler(dev, EvdevWheelEmuSetProperty, NULL, NULL);
+}
+#endif
--- a/src/evdev.c
+++ b/src/evdev.c
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright © 2004-2008 Red Hat, Inc.
+ * Copyright © 2008 University of South Australia
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors:
+ *	Kristian Høgsberg (krh@redhat.com)
+ *	Adam Jackson (ajax@redhat.com)
+ *	Peter Hutterer (peter@cs.unisa.edu.au)
+ */
+
+#ifndef EVDEV_H
+#define EVDEV_H
+
+#include <linux/input.h>
+#include <linux/types.h>
+
+#include <xf86Xinput.h>
+#include <xf86_OSproc.h>
+
+#ifdef XKB
+#include <xkbstr.h>
+#endif
+
+#ifndef EV_CNT /* linux 2.4 kernels and earlier lack _CNT defines */
+#define EV_CNT (EV_MAX+1)
+#endif
+#ifndef KEY_CNT
+#define KEY_CNT (KEY_MAX+1)
+#endif
+#ifndef REL_CNT
+#define REL_CNT (REL_MAX+1)
+#endif
+#ifndef ABS_CNT
+#define ABS_CNT (ABS_MAX+1)
+#endif
+#ifndef LED_CNT
+#define LED_CNT (LED_MAX+1)
+#endif
+
+#define EVDEV_MAXBUTTONS 32
+
+#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 3
+#define HAVE_PROPERTIES 1
+#endif
+
+#define LONG_BITS (sizeof(long) * 8)
+
+/* Number of longs needed to hold the given number of bits */
+#define NLONGS(x) (((x) + LONG_BITS - 1) / LONG_BITS)
+
+/* axis specific data for wheel emulation */
+typedef struct {
+    int up_button;
+    int down_button;
+    int traveled_distance;
+} WheelAxis, *WheelAxisPtr;
+
+typedef struct {
+    const char *device;
+    int grabDevice;         /* grab the event device? */
+    int screen;
+    int min_x, min_y, max_x, max_y;
+    int abs_x, abs_y, old_x, old_y;
+    int flags;
+    int tool;
+    int buttons;            /* number of buttons */
+    BOOL swap_axes;
+    BOOL invert_x;
+    BOOL invert_y;
+
+    /* XKB stuff has to be per-device rather than per-driver */
+    int noXkb;
+#ifdef XKB
+    char                    *xkb_rules;
+    char                    *xkb_model;
+    char                    *xkb_layout;
+    char                    *xkb_variant;
+    char                    *xkb_options;
+    XkbComponentNamesRec    xkbnames;
+#endif
+    /* Middle mouse button emulation */
+    struct {
+        BOOL                enabled;
+        BOOL                pending;     /* timer waiting? */
+        int                 buttonstate; /* phys. button state */
+        int                 state;       /* state machine (see bt3emu.c) */
+        Time                expires;     /* time of expiry */
+        Time                timeout;
+    } emulateMB;
+    struct {
+	int                 meta;           /* meta key to lock any button */
+	BOOL                meta_state;     /* meta_button state */
+	unsigned int        lock_pair[EVDEV_MAXBUTTONS];  /* specify a meta/lock pair */
+	BOOL                lock_state[EVDEV_MAXBUTTONS]; /* state of any locked buttons */
+    } dragLock;
+    struct {
+        BOOL                enabled;
+        int                 button;
+        int                 button_state;
+        int                 inertia;
+        WheelAxis           X;
+        WheelAxis           Y;
+        Time                expires;     /* time of expiry */
+        Time                timeout;
+    } emulateWheel;
+    /* run-time calibration */
+    struct {
+        int                 min_x;
+        int                 max_x;
+        int                 min_y;
+        int                 max_y;
+    } calibration;
+
+    unsigned char btnmap[32];           /* config-file specified button mapping */
+
+    int reopen_attempts; /* max attempts to re-open after read failure */
+    int reopen_left;     /* number of attempts left to re-open the device */
+    OsTimerPtr reopen_timer;
+
+    /* Cached info from device. */
+    char name[1024];
+    long bitmask[NLONGS(EV_CNT)];
+    long key_bitmask[NLONGS(KEY_CNT)];
+    long rel_bitmask[NLONGS(REL_CNT)];
+    long abs_bitmask[NLONGS(ABS_CNT)];
+    long led_bitmask[NLONGS(LED_CNT)];
+    struct input_absinfo absinfo[ABS_CNT];
+
+    /* minor/major number */
+    dev_t min_maj;
+} EvdevRec, *EvdevPtr;
+
+unsigned int EvdevUtilButtonEventToButtonNumber(EvdevPtr pEvdev, int code);
+
+/* Middle Button emulation */
+int  EvdevMBEmuTimer(InputInfoPtr);
+BOOL EvdevMBEmuFilterEvent(InputInfoPtr, int, BOOL);
+void EvdevMBEmuWakeupHandler(pointer, int, pointer);
+void EvdevMBEmuBlockHandler(pointer, struct timeval**, pointer);
+void EvdevMBEmuPreInit(InputInfoPtr);
+void EvdevMBEmuOn(InputInfoPtr);
+void EvdevMBEmuFinalize(InputInfoPtr);
+void EvdevMBEmuEnable(InputInfoPtr, BOOL);
+
+/* Mouse Wheel emulation */
+void EvdevWheelEmuPreInit(InputInfoPtr pInfo);
+BOOL EvdevWheelEmuFilterButton(InputInfoPtr pInfo, unsigned int button, int value);
+BOOL EvdevWheelEmuFilterMotion(InputInfoPtr pInfo, struct input_event *pEv);
+
+/* Draglock code */
+void EvdevDragLockPreInit(InputInfoPtr pInfo);
+BOOL EvdevDragLockFilterEvent(InputInfoPtr pInfo, unsigned int button, int value);
+
+#ifdef HAVE_PROPERTIES
+void EvdevMBEmuInitProperty(DeviceIntPtr);
+void EvdevWheelEmuInitProperty(DeviceIntPtr);
+void EvdevDragLockInitProperty(DeviceIntPtr);
+#endif
+#endif
--- a/xorg-evdev.pc.in
+++ b/xorg-evdev.pc.in
@@ -0,0 +1,6 @@
+sdkdir=@sdkdir@
+
+Name: xorg-evdev
+Description: X.Org evdev input driver.
+Version: @PACKAGE_VERSION@
+Cflags: -I${sdkdir}