1 files changed, 223 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp
new file mode 100644
index 0000000000..7a17b60a5e
--- /dev/null
+++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp
@@ -0,0 +1,223 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
+** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2016 Pelagicore AG
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeglfskmsgbmscreen.h"
+#include "qeglfskmsgbmdevice.h"
+#include "qeglfskmsgbmcursor.h"
+#include "qeglfsintegration.h"
+
+#include <QtCore/QLoggingCategory>
+
+#include <QtGui/private/qguiapplication_p.h>
+#include <QtPlatformSupport/private/qfbvthandler_p.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_DECLARE_LOGGING_CATEGORY(qLcEglfsKmsDebug)
+
+void QEglFSKmsGbmScreen::bufferDestroyedHandler(gbm_bo *bo, void *data)
+{
+    FrameBuffer *fb = static_cast<FrameBuffer *>(data);
+
+    if (fb->fb) {
+        gbm_device *device = gbm_bo_get_device(bo);
+        drmModeRmFB(gbm_device_get_fd(device), fb->fb);
+    }
+
+    delete fb;
+}
+
+QEglFSKmsGbmScreen::FrameBuffer *QEglFSKmsGbmScreen::framebufferForBufferObject(gbm_bo *bo)
+{
+    {
+        FrameBuffer *fb = static_cast<FrameBuffer *>(gbm_bo_get_user_data(bo));
+        if (fb)
+            return fb;
+    }
+
+    uint32_t width = gbm_bo_get_width(bo);
+    uint32_t height = gbm_bo_get_height(bo);
+    uint32_t stride = gbm_bo_get_stride(bo);
+    uint32_t handle = gbm_bo_get_handle(bo).u32;
+
+    QScopedPointer<FrameBuffer> fb(new FrameBuffer);
+
+    int ret = drmModeAddFB(device()->fd(), width, height, 24, 32,
+                           stride, handle, &fb->fb);
+
+    if (ret) {
+        qWarning("Failed to create KMS FB!");
+        return Q_NULLPTR;
+    }
+
+    gbm_bo_set_user_data(bo, fb.data(), bufferDestroyedHandler);
+    return fb.take();
+}
+
+QEglFSKmsGbmScreen::QEglFSKmsGbmScreen(QEglFSKmsIntegration *integration,
+                                 QEglFSKmsDevice *device,
+                                 QEglFSKmsOutput output,
+                                 QPoint position)
+    : QEglFSKmsScreen(integration, device, output, position)
+    , m_gbm_surface(Q_NULLPTR)
+    , m_gbm_bo_current(Q_NULLPTR)
+    , m_gbm_bo_next(Q_NULLPTR)
+    , m_cursor(Q_NULLPTR)
+{
+}
+
+QEglFSKmsGbmScreen::~QEglFSKmsGbmScreen()
+{
+}
+
+QPlatformCursor *QEglFSKmsGbmScreen::cursor() const
+{
+    if (integration()->hwCursor()) {
+        if (!integration()->separateScreens())
+            return static_cast<QEglFSKmsGbmDevice *>(device())->globalCursor();
+
+        if (m_cursor.isNull()) {
+            QEglFSKmsGbmScreen *that = const_cast<QEglFSKmsGbmScreen *>(this);
+            that->m_cursor.reset(new QEglFSKmsGbmCursor(that));
+        }
+
+        return m_cursor.data();
+    } else {
+        return QEglFSScreen::cursor();
+    }
+}
+
+gbm_surface *QEglFSKmsGbmScreen::createSurface()
+{
+    if (!m_gbm_surface) {
+        qCDebug(qLcEglfsKmsDebug) << "Creating window for screen" << name();
+        m_gbm_surface = gbm_surface_create(static_cast<QEglFSKmsGbmDevice *>(device())->gbmDevice(),
+                                           geometry().width(),
+                                           geometry().height(),
+                                           GBM_FORMAT_XRGB8888,
+                                           GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
+    }
+    return m_gbm_surface;
+}
+
+void QEglFSKmsGbmScreen::destroySurface()
+{
+    if (m_gbm_bo_current) {
+        gbm_bo_destroy(m_gbm_bo_current);
+        m_gbm_bo_current = Q_NULLPTR;
+    }
+
+    if (m_gbm_bo_next) {
+        gbm_bo_destroy(m_gbm_bo_next);
+        m_gbm_bo_next = Q_NULLPTR;
+    }
+
+    if (m_gbm_surface) {
+        gbm_surface_destroy(m_gbm_surface);
+        m_gbm_surface = Q_NULLPTR;
+    }
+}
+
+void QEglFSKmsGbmScreen::waitForFlip()
+{
+    // Don't lock the mutex unless we actually need to
+    if (!m_gbm_bo_next)
+        return;
+
+    QMutexLocker lock(&m_waitForFlipMutex);
+    while (m_gbm_bo_next)
+        static_cast<QEglFSKmsGbmDevice *>(device())->handleDrmEvent();
+}
+
+void QEglFSKmsGbmScreen::flip()
+{
+    if (!m_gbm_surface) {
+        qWarning("Cannot sync before platform init!");
+        return;
+    }
+
+    m_gbm_bo_next = gbm_surface_lock_front_buffer(m_gbm_surface);
+    if (!m_gbm_bo_next) {
+        qWarning("Could not lock GBM surface front buffer!");
+        return;
+    }
+
+    FrameBuffer *fb = framebufferForBufferObject(m_gbm_bo_next);
+
+    if (!output().mode_set) {
+        int ret = drmModeSetCrtc(device()->fd(),
+                                 output().crtc_id,
+                                 fb->fb,
+                                 0, 0,
+                                 &output().connector_id, 1,
+                                 &output().modes[output().mode]);
+
+        if (ret) {
+            qErrnoWarning("Could not set DRM mode!");
+        } else {
+            output().mode_set = true;
+            setPowerState(PowerStateOn);
+        }
+    }
+
+    int ret = drmModePageFlip(device()->fd(),
+                              output().crtc_id,
+                              fb->fb,
+                              DRM_MODE_PAGE_FLIP_EVENT,
+                              this);
+    if (ret) {
+        qErrnoWarning("Could not queue DRM page flip!");
+        gbm_surface_release_buffer(m_gbm_surface, m_gbm_bo_next);
+        m_gbm_bo_next = Q_NULLPTR;
+    }
+}
+
+void QEglFSKmsGbmScreen::flipFinished()
+{
+    if (m_gbm_bo_current)
+        gbm_surface_release_buffer(m_gbm_surface,
+                                   m_gbm_bo_current);
+
+    m_gbm_bo_current = m_gbm_bo_next;
+    m_gbm_bo_next = Q_NULLPTR;
+}
+
+QT_END_NAMESPACE