eglfs: Pluginize RPi, iMX6 and Mali backends

eglfs does not depend on the device makespecs anymore when it comes to these device
integration backends (hooks). Instead, backends are autodetected by configure.

The name of the preferred plugin is still set in the device makespecs. This
is optional. When not set and there is more than one plugin present in the system,
the environment variable QT_QPA_EGLFS_INTEGRATION will have to be set at runtime.
In the absence of that, the order is undefined.

Change-Id: Ie1ced2c9aa1beff2adb13b4fdea7c499cb5a6aab
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

5 files changed, 218 insertions, 0 deletions

diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/eglfs_mali.json b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/eglfs_mali.json
new file mode 100644
index 0000000000..8cabc1abbd
--- /dev/null
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/eglfs_mali.json
@@ -0,0 +1,3 @@
+{
+    "Keys": [ "eglfs_mali" ]
+}
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/eglfs_mali.pro b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/eglfs_mali.pro
new file mode 100644
index 0000000000..dcfb4cd26d
--- /dev/null
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/eglfs_mali.pro
@@ -0,0 +1,18 @@
+TARGET = qeglfs-mali-integration
+
+PLUGIN_TYPE = egldeviceintegrations
+PLUGIN_CLASS_NAME = QEglFSMaliIntegrationPlugin
+load(qt_plugin)
+
+QT += core-private gui-private platformsupport-private eglfs_device_lib-private
+
+INCLUDEPATH += $$PWD/../..
+CONFIG += egl
+QMAKE_LFLAGS += $$QMAKE_LFLAGS_NOUNDEF
+
+SOURCES += $$PWD/qeglfsmalimain.cpp \
+           $$PWD/qeglfsmaliintegration.cpp
+
+HEADERS += $$PWD/qeglfsmaliintegration.h
+
+OTHER_FILES += $$PWD/eglfs_mali.json
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmaliintegration.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmaliintegration.cpp
new file mode 100644
index 0000000000..6e5421d5b9
--- /dev/null
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmaliintegration.cpp
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeglfsmaliintegration.h"
+#include <EGL/fbdev_window.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+
+#include <private/qcore_unix_p.h>
+
+QT_BEGIN_NAMESPACE
+
+void QEglFSMaliIntegration::platformInit()
+{
+    // Keep the non-overridden base class functions based on fb0 working.
+    QEGLDeviceIntegration::platformInit();
+
+    int fd = qt_safe_open("/dev/fb0", O_RDWR, 0);
+    if (fd == -1)
+        qWarning("Failed to open fb to detect screen resolution!");
+
+    struct fb_var_screeninfo vinfo;
+    memset(&vinfo, 0, sizeof(vinfo));
+    if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) == -1)
+        qWarning("Could not get variable screen info");
+
+    vinfo.bits_per_pixel   = 32;
+    vinfo.red.length       = 8;
+    vinfo.green.length     = 8;
+    vinfo.blue.length      = 8;
+    vinfo.transp.length    = 8;
+    vinfo.blue.offset      = 0;
+    vinfo.green.offset     = 8;
+    vinfo.red.offset       = 16;
+    vinfo.transp.offset    = 24;
+    vinfo.yres_virtual     = 2 * vinfo.yres;
+
+    if (ioctl(fd, FBIOPUT_VSCREENINFO, &vinfo) == -1)
+        qErrnoWarning(errno, "Unable to set double buffer mode!");
+
+    qt_safe_close(fd);
+}
+
+EGLNativeWindowType QEglFSMaliIntegration::createNativeWindow(QPlatformWindow *window, const QSize &size, const QSurfaceFormat &format)
+{
+    Q_UNUSED(window);
+    Q_UNUSED(format);
+
+    fbdev_window *fbwin = reinterpret_cast<fbdev_window *>(malloc(sizeof(fbdev_window)));
+    if (NULL == fbwin)
+        return 0;
+
+    fbwin->width = size.width();
+    fbwin->height = size.height();
+    return (EGLNativeWindowType)fbwin;
+}
+
+void QEglFSMaliIntegration::destroyNativeWindow(EGLNativeWindowType window)
+{
+    free(window);
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmaliintegration.h b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmaliintegration.h
new file mode 100644
index 0000000000..ebe468d70b
--- /dev/null
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmaliintegration.h
@@ -0,0 +1,51 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEGLFSMALIINTEGRATION_H
+#define QEGLFSMALIINTEGRATION_H
+
+#include "qeglfsdeviceintegration.h"
+
+QT_BEGIN_NAMESPACE
+
+class QEglFSMaliIntegration : public QEGLDeviceIntegration
+{
+public:
+    void platformInit() Q_DECL_OVERRIDE;
+    EGLNativeWindowType createNativeWindow(QPlatformWindow *window, const QSize &size, const QSurfaceFormat &format) Q_DECL_OVERRIDE;
+    void destroyNativeWindow(EGLNativeWindowType window) Q_DECL_OVERRIDE;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmalimain.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmalimain.cpp
new file mode 100644
index 0000000000..0b90858efe
--- /dev/null
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmalimain.cpp
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeglfsdeviceintegration.h"
+#include "qeglfsmaliintegration.h"
+
+QT_BEGIN_NAMESPACE
+
+class QEglFSMaliIntegrationPlugin : public QEGLDeviceIntegrationPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID QEGLDeviceIntegrationFactoryInterface_iid FILE "eglfs_mali.json")
+
+public:
+    QEGLDeviceIntegration *create() Q_DECL_OVERRIDE { return new QEglFSMaliIntegration; }
+};
+
+QT_END_NAMESPACE
+
+#include "qeglfsmalimain.moc"