Disable tty keyboard in kms

Set QT_KMS_TTYKBD=1 to prevent this and keep vt switching, ctrl-c,
input appearing on the tty, etc. working.

Change-Id: I0071685205ae9e02536dcb71f6fef6495c48f8fb
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>

src/plugins/platforms/kms/kms.pro

@@ -21,7 +21,8 @@ SOURCES =   main.cpp \
             qkmsnativeinterface.cpp \
             qkmsudevlistener.cpp \
             qkmsudevhandler.cpp \
-            qkmsudevdrmhandler.cpp
+            qkmsudevdrmhandler.cpp \
+            qkmsvthandler.cpp
 HEADERS =   qkmsintegration.h \
             qkmsscreen.h \
             qkmscontext.h \
@@ -32,7 +33,8 @@ HEADERS =   qkmsintegration.h \
             qkmsnativeinterface.h \
             qkmsudevlistener.h \
             qkmsudevhandler.h \
-            qkmsudevdrmhandler.h
+            qkmsudevdrmhandler.h \
+            qkmsvthandler.h
 
 target.path += $$[QT_INSTALL_PLUGINS]/platforms
 INSTALLS += target

src/plugins/platforms/kms/qkmsintegration.cpp

@@ -48,6 +48,7 @@
 #include "qkmsnativeinterface.h"
 #include "qkmsudevlistener.h"
 #include "qkmsudevdrmhandler.h"
+#include "qkmsvthandler.h"
 
 #include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
 #include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
@@ -66,6 +67,7 @@ QKmsIntegration::QKmsIntegration()
 {
     QGuiApplicationPrivate::instance()->setEventDispatcher(m_eventDispatcher);
     setenv("EGL_PLATFORM", "drm",1);
+    m_vtHandler = new QKmsVTHandler;
     m_drmHandler = new QKmsUdevDRMHandler(this);
     m_udevListener->addHandler(m_drmHandler);
 }
@@ -80,6 +82,7 @@ QKmsIntegration::~QKmsIntegration()
     }
     delete m_fontDatabase;
     delete m_udevListener;
+    delete m_vtHandler;
 }
 
 QObject *QKmsIntegration::createDevice(const char *path)

src/plugins/platforms/kms/qkmsintegration.h

@@ -51,6 +51,7 @@ class QKmsScreen;
 class QKmsDevice;
 class QKmsUdevListener;
 class QKmsUdevDRMHandler;
+class QKmsVTHandler;
 
 class QKmsIntegration : public QPlatformIntegration
 {
@@ -82,6 +83,7 @@ private:
     QPlatformNativeInterface *m_nativeInterface;
     QKmsUdevListener *m_udevListener;
     QKmsUdevDRMHandler *m_drmHandler;
+    QKmsVTHandler *m_vtHandler;
 };
 
 QT_END_NAMESPACE

src/plugins/platforms/kms/qkmsvthandler.cpp

@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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 <qkmsvthandler.h>
+#include <sys/ioctl.h>
+#include <linux/vt.h>
+#include <linux/kd.h>
+#include <QDebug>
+
+#ifdef K_OFF
+#define KBD_OFF_MODE K_OFF
+#else
+#define KBD_OFF_MODE K_RAW
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QKmsVTHandler::QKmsVTHandler(QObject *parent)
+    : QObject(parent), m_tty(-1)
+{
+    if (!isatty(0))
+        return;
+
+    m_tty = 0;
+
+    ioctl(m_tty, KDGKBMODE, &m_oldKbdMode);
+    if (!qgetenv("QT_KMS_TTYKBD").toInt())
+        ioctl(m_tty, KDSKBMODE, KBD_OFF_MODE);
+}
+
+QKmsVTHandler::~QKmsVTHandler()
+{
+    if (m_tty == -1)
+        return;
+
+    ioctl(m_tty, KDSKBMODE, m_oldKbdMode);
+}
+
+QT_END_NAMESPACE

src/plugins/platforms/kms/qkmsvthandler.h

@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QKMSVTHANDLER_H
+#define QKMSVTHANDLER_H
+
+#include <QObject>
+
+QT_BEGIN_NAMESPACE
+
+class QKmsVTHandler : public QObject
+{
+    Q_OBJECT
+
+public:
+    QKmsVTHandler(QObject *parent = 0);
+    ~QKmsVTHandler();
+
+private:
+    int m_tty;
+    int m_oldKbdMode;
+};
+
+QT_END_NAMESPACE
+
+#endif