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diff --git a/src/gui/embedded/qmousetslib_qws.cpp b/src/gui/embedded/qmousetslib_qws.cpp
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+++ b/src/gui/embedded/qmousetslib_qws.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmousetslib_qws.h"
+
+#if !defined(QT_NO_QWS_MOUSE_TSLIB) || defined(QT_PLUGIN)
+
+#include <QtCore/qregexp.h>
+#include <QtCore/qstringlist.h>
+#include "qsocketnotifier.h"
+#include "qscreen_qws.h"
+
+#include <tslib.h>
+#include <errno.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifdef TSLIBMOUSEHANDLER_DEBUG
+#  include <QtCore/QDebug>
+#endif
+
+/*!
+    \internal
+
+    \class QWSTslibMouseHandler
+    \ingroup qws
+
+    \brief The QWSTslibMouseHandler class implements a mouse driver
+    for the Universal Touch Screen Library, tslib.
+
+    QWSTslibMouseHandler inherits the QWSCalibratedMouseHandler class,
+    providing calibration and noise reduction functionality in
+    addition to generating mouse events, for devices using the
+    Universal Touch Screen Library.
+
+    To be able to compile this mouse handler, \l{Qt for Embedded Linux}
+    must be configured with the \c -qt-mouse-tslib option, see the
+    \l{Pointer Handling} documentation for details. In addition, the tslib
+    headers and library must be present in the build environment.  The
+    tslib sources can be downloaded from \l
+    {http://tslib.berlios.de/}.  Use the \c -L and \c -I options
+    with \c configure to explicitly specify the location of the
+    library and its headers:
+
+    \snippet doc/src/snippets/code/src_gui_embedded_qmousetslib_qws.cpp 0
+
+    In order to use this mouse handler, tslib must also be correctly
+    installed on the target machine. This includes providing a \c
+    ts.conf configuration file and setting the necessary environment
+    variables, see the README file provided with tslib for details.
+
+    The ts.conf file will usually contain the following two lines
+
+    \snippet doc/src/snippets/code/src_gui_embedded_qmousetslib_qws.cpp 1
+
+    To make \l{Qt for Embedded Linux} explicitly choose the tslib mouse
+    handler, set the QWS_MOUSE_PROTO environment variable.
+
+    \sa {Pointer Handling}, {Qt for Embedded Linux}
+*/
+
+class QWSTslibMouseHandlerPrivate : public QObject
+{
+    Q_OBJECT
+public:
+    QWSTslibMouseHandlerPrivate(QWSTslibMouseHandler *h,
+                                const QString &device);
+    ~QWSTslibMouseHandlerPrivate();
+
+    void suspend();
+    void resume();
+
+    void calibrate(const QWSPointerCalibrationData *data);
+    void clearCalibration();
+
+private:
+    QWSTslibMouseHandler *handler;
+    struct tsdev *dev;
+    QSocketNotifier *mouseNotifier;
+    int jitter_limit;
+
+    struct ts_sample lastSample;
+    bool wasPressed;
+    int lastdx;
+    int lastdy;
+
+    bool calibrated;
+    QString devName;
+
+    bool open();
+    void close();
+    inline bool get_sample(struct ts_sample *sample);
+
+private slots:
+    void readMouseData();
+};
+
+QWSTslibMouseHandlerPrivate::QWSTslibMouseHandlerPrivate(QWSTslibMouseHandler *h,
+                                                         const QString &device)
+    : handler(h), dev(0), mouseNotifier(0), jitter_limit(3)
+{
+    QStringList args = device.split(QLatin1Char(':'), QString::SkipEmptyParts);
+    QRegExp jitterRegex(QLatin1String("^jitter_limit=(\\d+)$"));
+    int index = args.indexOf(jitterRegex);
+    if (index >= 0) {
+        jitter_limit = jitterRegex.cap(1).toInt();
+        args.removeAt(index);
+    }
+
+    devName = args.join(QString());
+
+    if (devName.isNull()) {
+        const char *str = getenv("TSLIB_TSDEVICE");
+        if (str)
+            devName = QString::fromLocal8Bit(str);
+    }
+
+    if (devName.isNull())
+        devName = QLatin1String("/dev/ts");
+
+    if (!open())
+        return;
+
+    calibrated = true;
+
+    int fd = ts_fd(dev);
+    mouseNotifier = new QSocketNotifier(fd, QSocketNotifier::Read, this);
+    connect(mouseNotifier, SIGNAL(activated(int)),this, SLOT(readMouseData()));
+    resume();
+}
+
+QWSTslibMouseHandlerPrivate::~QWSTslibMouseHandlerPrivate()
+{
+    close();
+}
+
+bool QWSTslibMouseHandlerPrivate::open()
+{
+    dev = ts_open(devName.toLocal8Bit().constData(), 1);
+    if (!dev) {
+        qCritical("QWSTslibMouseHandlerPrivate: ts_open() failed"
+                  " with error: '%s'", strerror(errno));
+        qCritical("Please check your tslib installation!");
+        return false;
+    }
+
+    if (ts_config(dev)) {
+        qCritical("QWSTslibMouseHandlerPrivate: ts_config() failed"
+                  " with error: '%s'", strerror(errno));
+        qCritical("Please check your tslib installation!");
+        close();
+        return false;
+    }
+
+    return true;
+}
+
+void QWSTslibMouseHandlerPrivate::close()
+{
+    if (dev)
+        ts_close(dev);
+}
+
+void QWSTslibMouseHandlerPrivate::suspend()
+{
+    if (mouseNotifier)
+        mouseNotifier->setEnabled(false);
+}
+
+void QWSTslibMouseHandlerPrivate::resume()
+{
+    memset(&lastSample, 0, sizeof(lastSample));
+    wasPressed = false;
+    lastdx = 0;
+    lastdy = 0;
+    if (mouseNotifier)
+        mouseNotifier->setEnabled(true);
+}
+
+bool QWSTslibMouseHandlerPrivate::get_sample(struct ts_sample *sample)
+{
+    if (!calibrated)
+        return (ts_read_raw(dev, sample, 1) == 1);
+
+    return (ts_read(dev, sample, 1) == 1);
+}
+
+void QWSTslibMouseHandlerPrivate::readMouseData()
+{
+    if (!qt_screen)
+        return;
+
+    for(;;) {
+        struct ts_sample sample = lastSample;
+        bool pressed = wasPressed;
+
+        // Fast return if there's no events.
+        if (!get_sample(&sample))
+            return;
+        pressed = (sample.pressure > 0);
+
+        // Only return last sample unless there's a press/release event.
+        while (pressed == wasPressed) {
+            if (!get_sample(&sample))
+                break;
+            pressed = (sample.pressure > 0);
+        }
+
+        // work around missing coordinates on mouse release in raw mode
+        if (!calibrated && !pressed && sample.x == 0 && sample.y == 0) {
+            sample.x = lastSample.x;
+            sample.y = lastSample.y;
+        }
+
+        int dx = sample.x - lastSample.x;
+        int dy = sample.y - lastSample.y;
+
+        // Remove small movements in oppsite direction
+        if (dx * lastdx < 0 && qAbs(dx) < jitter_limit) {
+            sample.x = lastSample.x;
+            dx = 0;
+        }
+        if (dy * lastdy < 0 && qAbs(dy) < jitter_limit) {
+            sample.y = lastSample.y;
+            dy = 0;
+        }
+
+        if (wasPressed == pressed && dx == 0 && dy == 0)
+            return;
+
+#ifdef TSLIBMOUSEHANDLER_DEBUG
+        qDebug() << "last" << QPoint(lastSample.x, lastSample.y)
+                 << "curr" << QPoint(sample.x, sample.y)
+                 << "dx,dy" << QPoint(dx, dy)
+                 << "ddx,ddy" << QPoint(dx*lastdx, dy*lastdy)
+                 << "pressed" << wasPressed << pressed;
+#endif
+
+        lastSample = sample;
+        wasPressed = pressed;
+        if (dx != 0)
+            lastdx = dx;
+        if (dy != 0)
+            lastdy = dy;
+
+        const QPoint p(sample.x, sample.y);
+        if (calibrated) {
+            // tslib should do all the translation and filtering, so we send a
+            // "raw" mouse event
+            handler->QWSMouseHandler::mouseChanged(p, pressed);
+        } else {
+            handler->sendFiltered(p, pressed);
+        }
+    }
+}
+
+void QWSTslibMouseHandlerPrivate::clearCalibration()
+{
+    suspend();
+    close();
+    handler->QWSCalibratedMouseHandler::clearCalibration();
+    calibrated = false;
+    open();
+    resume();
+}
+
+void QWSTslibMouseHandlerPrivate::calibrate(const QWSPointerCalibrationData *data)
+{
+    suspend();
+    close();
+    // default implementation writes to /etc/pointercal
+    // using the same format as the tslib linear module.
+    handler->QWSCalibratedMouseHandler::calibrate(data);
+    calibrated = true;
+    open();
+    resume();
+}
+
+/*!
+    \internal
+*/
+QWSTslibMouseHandler::QWSTslibMouseHandler(const QString &driver,
+                                           const QString &device)
+    : QWSCalibratedMouseHandler(driver, device)
+{
+    d = new QWSTslibMouseHandlerPrivate(this, device);
+}
+
+/*!
+    \internal
+*/
+QWSTslibMouseHandler::~QWSTslibMouseHandler()
+{
+    delete d;
+}
+
+/*!
+    \reimp
+*/
+void QWSTslibMouseHandler::suspend()
+{
+    d->suspend();
+}
+
+/*!
+    \reimp
+*/
+void QWSTslibMouseHandler::resume()
+{
+    d->resume();
+}
+
+/*!
+    \reimp
+*/
+void QWSTslibMouseHandler::clearCalibration()
+{
+    d->clearCalibration();
+}
+
+/*!
+    \reimp
+*/
+void QWSTslibMouseHandler::calibrate(const QWSPointerCalibrationData *data)
+{
+    d->calibrate(data);
+}
+
+QT_END_NAMESPACE
+
+#include "qmousetslib_qws.moc"
+
+#endif //QT_NO_QWS_MOUSE_TSLIB