eglfs: Support for alternative Mali driver packages

In addition to the proprietary Mali Linux driver bundle from ARM, there
are a couple of semi open source alternative bundles out in the wild,
which are mostly derivatives from the sunxi-mali bundle.

The non-ARM bundles lacks the proprietary header file fbdev_window.h
which defines the fbdev_window struct. Instead, it has an equivalent
mali_native_window struct in the EGL/eglplatform.h (which in turn is
included by EGL/egl.h).

This change adds an alternative configure test which detects the non-ARM
bundles are used. It also removes the dependency on fbdev_window.h by
defining the structure ourselves, which actually makes the plugin
potentially compilable with *any* EGL SDK.

Change-Id: I78ab4b618e8e9c774c889fe9896105cf2cf4228e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

config.tests/qpa/eglfs-mali-2/eglfs-mali-2.cpp

@@ -0,0 +1,44 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the config.tests 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 <EGL/egl.h>
+#include <GLES2/gl2.h>
+
+int main(int, char **)
+{
+    EGLDisplay dpy = 0;
+    EGLContext ctx = 0;
+    mali_native_window *w = 0;
+    eglDestroyContext(dpy, ctx);
+    return 0;
+}

config.tests/qpa/eglfs-mali-2/eglfs-mali-2.pro

@@ -0,0 +1,5 @@
+SOURCES = eglfs-mali-2.cpp
+
+CONFIG -= qt
+
+LIBS += -lEGL -lGLESv2

configure

@@ -5729,7 +5729,8 @@ if [ "$CFG_EGLFS" != "no" ]; then
         else
             CFG_EGLFS_BRCM=no
         fi
-        if compileTest qpa/eglfs-mali "eglfs-mali"; then
+        if compileTest qpa/eglfs-mali "eglfs-mali" \
+            || compileTest qpa/eglfs-mali-2 "eglfs-mali-2"; then
             CFG_EGLFS_MALI=yes
         else
             CFG_EGLFS_MALI=no

src/plugins/platforms/eglfs/deviceintegration/eglfs_mali/qeglfsmaliintegration.cpp

@@ -32,7 +32,6 @@
 ****************************************************************************/
 
 #include "qeglfsmaliintegration.h"
-#include <EGL/fbdev_window.h>
 
 #include <unistd.h>
 #include <fcntl.h>
@@ -43,6 +42,11 @@
 
 QT_BEGIN_NAMESPACE
 
+struct fbdev_window {
+    unsigned short width;
+    unsigned short height;
+};
+
 void QEglFSMaliIntegration::platformInit()
 {
     // Keep the non-overridden base class functions based on fb0 working.