Initial support for Qt using Kernel Mode-setting (KMS)

This platform plugin supports fullscreen OpenGLES2 windows on devices
that support Kernel Mode-setting.

Change-Id: I7d4077319654c13851f0ff7ec0228b7b13936382
Reviewed-on: http://codereview.qt.nokia.com/2516
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>

1 files changed, 138 insertions, 0 deletions

diff --git a/src/plugins/platforms/kms/qkmsintegration.cpp b/src/plugins/platforms/kms/qkmsintegration.cpp
new file mode 100644
index 0000000000..18e305d633
--- /dev/null
+++ b/src/plugins/platforms/kms/qkmsintegration.cpp
@@ -0,0 +1,138 @@
+/****************************************************************************
+**
+** 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 plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qkmsintegration.h"
+#include "qkmsdevice.h"
+#include "qkmsscreen.h"
+#include "qkmswindow.h"
+#include "qkmsbackingstore.h"
+#include "qkmscontext.h"
+
+#include <QtPlatformSupport/private/qgenericunixprintersupport_p.h>
+#include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
+#include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
+#include <QtGui/private/qguiapplication_p.h>
+#include <QtGui/QGuiGLContext>
+#include <QtGui/QScreen>
+
+QT_BEGIN_NAMESPACE
+
+QKmsIntegration::QKmsIntegration()
+    : QPlatformIntegration(),
+      m_fontDatabase(new QGenericUnixFontDatabase()),
+      m_printerSupport(new QGenericUnixPrinterSupport()),
+      m_eventDispatcher(createUnixEventDispatcher())
+{
+    QGuiApplicationPrivate::instance()->setEventDispatcher(m_eventDispatcher);
+    setenv("EGL_PLATFORM", "drm",1);
+    QStringList drmDevices = findDrmDevices();
+    foreach (QString path, drmDevices) {
+        m_devices.append(new QKmsDevice(path, this));
+    }
+}
+
+QKmsIntegration::~QKmsIntegration()
+{
+    foreach (QKmsDevice *device, m_devices) {
+        delete device;
+    }
+    foreach (QPlatformScreen *screen, m_screens) {
+        delete screen;
+    }
+    delete m_printerSupport;
+    delete m_fontDatabase;
+}
+
+bool QKmsIntegration::hasCapability(QPlatformIntegration::Capability cap) const
+{
+    switch (cap) {
+    case ThreadedPixmaps: return true;
+    case OpenGL: return true;
+    default: return QPlatformIntegration::hasCapability(cap);
+    }
+}
+
+QPlatformGLContext *QKmsIntegration::createPlatformGLContext(QGuiGLContext *context) const
+{
+    QKmsScreen *screen = static_cast<QKmsScreen *>(context->screen()->handle());
+    return new QKmsContext(screen->device());
+}
+
+QPlatformWindow *QKmsIntegration::createPlatformWindow(QWindow *window) const
+{
+    return new QKmsWindow(window);
+}
+
+QPlatformBackingStore *QKmsIntegration::createPlatformBackingStore(QWindow *window) const
+{
+    return new QKmsBackingStore(window);
+}
+
+QPlatformFontDatabase *QKmsIntegration::fontDatabase() const
+{
+    return m_fontDatabase;
+}
+
+QStringList QKmsIntegration::findDrmDevices()
+{
+    //Return a list addresses of DRM supported devices
+    //Hardcoded now, but could use udev to return a list
+    //of multiple devices.
+    return QStringList(QString::fromLatin1("/dev/dri/card0"));
+}
+
+void QKmsIntegration::addScreen(QKmsScreen *screen)
+{
+    m_screens.append(screen);
+    screenAdded(screen);
+}
+
+QAbstractEventDispatcher *QKmsIntegration::guiThreadEventDispatcher() const
+{
+    return m_eventDispatcher;
+}
+
+QPlatformPrinterSupport *QKmsIntegration::printerSupport() const
+{
+    return m_printerSupport;
+}
+
+QT_END_NAMESPACE