device: Add device support for the Broadcom Raspberry PI

Add mkspec for the Raspberry PI platform to be used in conjunction with the
-device support in configure. This allows you to build Qt with the
application libraries provided by the Raspberry PI foundation.

The Raspberry PI is described here:

http://en.wikipedia.org/wiki/Raspberry_Pi

and its use with Qt is documented here:

http://wiki.qt-project.org/Devices/RaspberryPi

Change-Id: Ib8d11d0a469edaaf34ccc04cf33a42a725fc2bdb
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

diff --git a/mkspecs/devices/linux-rasp-pi-g++/qeglfs_hooks.cpp b/mkspecs/devices/linux-rasp-pi-g++/qeglfs_hooks.cpp
new file mode 100644 (file)
index 0000000..2cbd297
--- /dev/null
+++ b/mkspecs/devices/linux-rasp-pi-g++/qeglfs_hooks.cpp
@@ -0,0 +1,143 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the qmake spec 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 "qeglfs_hooks.h"
+
+#include <bcm_host.h>
+
+#if 0 //fb size query
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <linux/fb.h>
+#endif
+
+static DISPMANX_DISPLAY_HANDLE_T dispman_display = 0;
+static DISPMANX_UPDATE_HANDLE_T dispman_update = 0;
+
+void QEglFSHooks::platformInit()
+{
+    bcm_host_init();
+}
+
+EGLNativeDisplayType QEglFSHooks::platformDisplay() const
+{
+    dispman_display = vc_dispmanx_display_open(0/* LCD */);
+    return EGL_DEFAULT_DISPLAY;
+}
+
+void QEglFSHooks::platformDestroy()
+{
+    vc_dispmanx_display_close(dispman_display);
+}
+
+QSize QEglFSHooks::screenSize() const
+{
+    //both mechanisms work
+#if 1
+    uint32_t width, height;
+    graphics_get_display_size(0 /* LCD */, &width, &height);
+    return QSize(width, height);
+#else
+    int fd = open("/dev/fb0", O_RDONLY);
+    if (fd == -1) {
+        fprintf(stderr, "Failed to open fb to detect screen resolution!\n");
+        return QSize();
+    }
+
+    struct fb_var_screeninfo vinfo;
+    if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) = -1) {
+        fprintf(stderr, "Could not query screen info variable\n");
+        close(fd);
+        return QSize();
+    }
+
+    close(fd);
+
+    return QSize(vinfo.xres, vinfo.yres);
+#endif
+}
+
+EGLNativeWindowType QEglFSHooks::createNativeWindow(const QSize &size)
+{
+    VC_RECT_T dst_rect;
+    dst_rect.x = 0;
+    dst_rect.y = 0;
+    dst_rect.width = size.width();
+    dst_rect.height = size.height();
+
+    VC_RECT_T src_rect;
+    src_rect.x = 0;
+    src_rect.y = 0;
+    src_rect.width = size.width() << 16;
+    src_rect.height = size.height() << 16;
+
+    dispman_update = vc_dispmanx_update_start(0);
+
+    VC_DISPMANX_ALPHA_T alpha;
+    alpha.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS;
+    alpha.opacity = 0xFF;
+    alpha.mask = 0;
+
+    DISPMANX_ELEMENT_HANDLE_T dispman_element = vc_dispmanx_element_add(
+            dispman_update, dispman_display, 0, &dst_rect, 0, &src_rect,
+            DISPMANX_PROTECTION_NONE, &alpha, (DISPMANX_CLAMP_T *)NULL, (DISPMANX_TRANSFORM_T)0);
+
+    vc_dispmanx_update_submit_sync(dispman_update);
+
+    EGL_DISPMANX_WINDOW_T *eglWindow = new EGL_DISPMANX_WINDOW_T;
+    eglWindow->element = dispman_element;
+    eglWindow->width = size.width();
+    eglWindow->height = size.height();
+
+    return eglWindow;
+}
+
+void QEglFSHooks::destroyNativeWindow(EGLNativeWindowType window)
+{
+    EGL_DISPMANX_WINDOW_T *eglWindow = static_cast<EGL_DISPMANX_WINDOW_T *>(window);
+    vc_dispmanx_element_remove(dispman_update, eglWindow->element);
+    delete eglWindow;
+}
+
+QEglFSHooks platform_hooks;

diff --git a/mkspecs/devices/linux-rasp-pi-g++/qmake.conf b/mkspecs/devices/linux-rasp-pi-g++/qmake.conf
new file mode 100644 (file)
index 0000000..326d6b3
--- /dev/null
+++ b/mkspecs/devices/linux-rasp-pi-g++/qmake.conf
@@ -0,0 +1,56 @@
+#
+# qmake configuration for Broadcom's Raspberry PI
+# http://wiki.qt-project.org/Devices/RaspberryPi
+
+!exists($$[QT_SYSROOT]/usr/include/libudev.h) {
+    message("Keyboard support requires udev")
+    message("Install libudev-dev in your rootfs")
+    error()
+}
+
+MAKEFILE_GENERATOR  = UNIX
+TARGET_PLATFORM     = unix
+TEMPLATE            = app
+CONFIG              += qt warn_on release incremental link_prl gdb_dwarf_index
+QT                  += core gui
+QMAKE_INCREMENTAL_STYLE = sublib
+
+include(../../common/linux.conf)
+include(../../common/gcc-base-unix.conf)
+include(../../common/g++-unix.conf)
+
+load(device_config)
+
+QMAKE_CC                = $${CROSS_COMPILE}gcc
+QMAKE_CXX               = $${CROSS_COMPILE}g++
+QMAKE_LINK              = $${QMAKE_CXX}
+QMAKE_LINK_SHLIB        = $${QMAKE_CXX}
+
+# modifications to linux.conf
+QMAKE_AR                = $${CROSS_COMPILE}ar cqs
+QMAKE_OBJCOPY           = $${CROSS_COMPILE}objcopy
+QMAKE_STRIP             = $${CROSS_COMPILE}strip
+
+#Circular dependency in GLES2 <-> EGL requires the following abomination
+QMAKE_LIBS_EGL          = -L$$[QT_SYSROOT]/opt/vc/lib -lWFC -lGLESv2 -lEGL -lbcm_host -lopenmaxil
+QMAKE_LIBS_OPENGL_ES2   = $${QMAKE_LIBS_EGL}
+QMAKE_LIBS_OPENVG       = $${QMAKE_LIBS_EGL}
+
+QMAKE_INCDIR_EGL        = $$[QT_SYSROOT]/opt/vc/include
+QMAKE_INCDIR_OPENGL_ES2 = $${QMAKE_INCDIR_EGL}
+
+QMAKE_CFLAGS_RELEASE    += \
+                          -mfloat-abi=softfp \
+                          -mfpu=vfp \
+                          -mtune=arm1176jzf-s \
+                          -march=armv6zk \
+                          -mabi=aapcs-linux
+
+QMAKE_CXXFLAGS_RELEASE = $$QMAKE_CFLAGS_RELEASE
+
+EGLFS_PLATFORM_HOOKS_SOURCES = $$PWD/qeglfs_hooks.cpp
+
+# Sanity check
+deviceSanityCheckCompiler()
+
+load(qt_config)

diff --git a/mkspecs/devices/linux-rasp-pi-g++/qplatformdefs.h b/mkspecs/devices/linux-rasp-pi-g++/qplatformdefs.h
new file mode 100644 (file)
index 0000000..62cbb04
--- /dev/null
+++ b/mkspecs/devices/linux-rasp-pi-g++/qplatformdefs.h
@@ -0,0 +1,44 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the qmake spec 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 "../../linux-g++/qplatformdefs.h"
+
+#define QT_QPA_DEFAULT_PLATFORM_NAME "eglfs"