Remove unused kms plugin

The old kms plugin has been replaced by EGLFS's KMS backend. The EGLFS
backend is smaller and has more features.

The kms plugin cannot be built automatically since Qt 5.5 and is
therefore also not tested for changes in QPA API by the CI. Therefore
removing the plugin from the tree should not be a regression from the
previous release.

Change-Id: Icb9ea8c4a5d6421397a2e3f2e2195fb6bfad2293
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

1 files changed, 0 insertions, 275 deletions

diff --git a/src/plugins/platforms/kms/qkmsscreen.cpp b/src/plugins/platforms/kms/qkmsscreen.cpp
deleted file mode 100644
index 6392b99cd5..0000000000
--- a/src/plugins/platforms/kms/qkmsscreen.cpp
+++ /dev/null
@@ -1,275 +0,0 @@
-/****************************************************************************
-**
-** 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 "qkmsscreen.h"
-#include "qkmscursor.h"
-#include "qkmsdevice.h"
-#include "qkmscontext.h"
-
-#include <QtPlatformSupport/private/qeglconvenience_p.h>
-
-#include <QCoreApplication>
-#include <QtDebug>
-
-QT_BEGIN_NAMESPACE
-
-Q_LOGGING_CATEGORY(lcQpaScreen, "qt.qpa.kms.screen")
-
-//Fallback mode (taken from Wayland DRM demo compositor)
-static drmModeModeInfo builtin_1024x768 = {
-    63500, //clock
-    1024, 1072, 1176, 1328, 0,
-    768, 771, 775, 798, 0,
-    59920,
-    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
-    0,
-    "1024x768"
-};
-
-QKmsScreen::QKmsScreen(QKmsDevice *device, const drmModeRes *resources, const drmModeConnector *connector)
-    : m_device(device),
-      m_current_bo(0),
-      m_next_bo(0),
-      m_connectorId(connector->connector_id),
-      m_depth(32),
-      m_format(QImage::Format_Invalid),
-      m_eglWindowSurface(EGL_NO_SURFACE),
-      m_modeSet(false)
-{
-    m_cursor = new QKmsCursor(this);
-    initializeScreenMode(resources, connector);
-}
-
-QKmsScreen::~QKmsScreen()
-{
-    delete m_cursor;
-    drmModeSetCrtc(m_device->fd(), m_oldCrtc->crtc_id, m_oldCrtc->buffer_id,
-                   m_oldCrtc->x, m_oldCrtc->y,
-                   &m_connectorId, 1, &m_oldCrtc->mode);
-    drmModeFreeCrtc(m_oldCrtc);
-    if (m_eglWindowSurface != EGL_NO_SURFACE)
-        eglDestroySurface(m_device->eglDisplay(), m_eglWindowSurface);
-    gbm_surface_destroy(m_gbmSurface);
-}
-
-QRect QKmsScreen::geometry() const
-{
-    return m_geometry;
-}
-
-int QKmsScreen::depth() const
-{
-    return m_depth;
-}
-
-QImage::Format QKmsScreen::format() const
-{
-    return m_format;
-}
-
-QSizeF QKmsScreen::physicalSize() const
-{
-    return m_physicalSize;
-}
-
-QPlatformCursor *QKmsScreen::cursor() const
-{
-    return m_cursor;
-}
-
-void QKmsScreen::initializeScreenMode(const drmModeRes *resources, const drmModeConnector *connector)
-{
-    //Determine optimal mode for screen
-    drmModeModeInfo *mode = 0;
-    for (int i = 0; i < connector->count_modes; ++i) {
-        if (connector->modes[i].type & DRM_MODE_TYPE_PREFERRED) {
-            mode = &connector->modes[i];
-            break;
-        }
-    }
-    if (!mode) {
-        if (connector->count_modes > 0)
-            mode = &connector->modes[0];
-        else
-            mode = &builtin_1024x768;
-    }
-
-    drmModeEncoder *encoder = drmModeGetEncoder(m_device->fd(), connector->encoders[0]);
-    if (encoder == 0)
-        qFatal("No encoder for connector.");
-
-    int i;
-    for (i = 0; i < resources->count_crtcs; i++) {
-        if (encoder->possible_crtcs & (1 << i))
-            break;
-    }
-    if (i == resources->count_crtcs)
-        qFatal("No usable crtc for encoder.");
-
-    m_oldCrtc = drmModeGetCrtc(m_device->fd(), encoder->crtc_id);
-
-    m_crtcId = resources->crtcs[i];
-    m_mode = *mode;
-    m_geometry = QRect(0, 0, m_mode.hdisplay, m_mode.vdisplay);
-    qCDebug(lcQpaScreen) << "kms initialized with geometry" << m_geometry;
-    m_depth = 32;
-    m_format = QImage::Format_RGB32;
-    m_physicalSize = QSizeF(connector->mmWidth, connector->mmHeight);
-
-    m_gbmSurface = gbm_surface_create(m_device->gbmDevice(),
-                                      m_mode.hdisplay, m_mode.vdisplay,
-                                      GBM_BO_FORMAT_XRGB8888,
-                                      GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
-
-    qCDebug(lcQpaScreen) << "created gbm surface" << m_gbmSurface << m_mode.hdisplay << m_mode.vdisplay;
-    //Cleanup
-    drmModeFreeEncoder(encoder);
-}
-
-QSurfaceFormat QKmsScreen::tweakFormat(const QSurfaceFormat &format)
-{
-    QSurfaceFormat fmt = format;
-    fmt.setRedBufferSize(8);
-    fmt.setGreenBufferSize(8);
-    fmt.setBlueBufferSize(8);
-    if (fmt.alphaBufferSize() != -1)
-        fmt.setAlphaBufferSize(8);
-    return fmt;
-}
-
-void QKmsScreen::initializeWithFormat(const QSurfaceFormat &format)
-{
-    EGLDisplay display = m_device->eglDisplay();
-    EGLConfig config = q_configFromGLFormat(display, tweakFormat(format));
-
-    m_eglWindowSurface = eglCreateWindowSurface(display, config, (EGLNativeWindowType)m_gbmSurface, NULL);
-    qCDebug(lcQpaScreen) << "created window surface";
-    m_surfaceFormat = q_glFormatFromConfig(display, config);
-}
-
-void QKmsScreen::swapBuffers()
-{
-    eglSwapBuffers(m_device->eglDisplay(), m_eglWindowSurface);
-
-    m_next_bo = gbm_surface_lock_front_buffer(m_gbmSurface);
-    if (!m_next_bo)
-        qFatal("kms: Failed to lock front buffer");
-
-    performPageFlip();
-}
-
-void QKmsScreen::performPageFlip()
-{
-    if (!m_next_bo)
-        return;
-
-    uint32_t width = gbm_bo_get_width(m_next_bo);
-    uint32_t height = gbm_bo_get_height(m_next_bo);
-    uint32_t stride = gbm_bo_get_stride(m_next_bo);
-    uint32_t handle = gbm_bo_get_handle(m_next_bo).u32;
-
-    uint32_t fb_id;
-    int ret = drmModeAddFB(m_device->fd(), width, height, 24, 32,
-                           stride, handle, &fb_id);
-    if (ret) {
-        qFatal("kms: Failed to create fb: fd %d, w %d, h %d, stride %d, handle %d, ret %d",
-               m_device->fd(), width, height, stride, handle, ret);
-    }
-
-    if (!m_modeSet) {
-        //Set the Mode of the screen.
-        int ret = drmModeSetCrtc(m_device->fd(), m_crtcId, fb_id,
-                0, 0, &m_connectorId, 1, &m_mode);
-        if (ret)
-            qFatal("failed to set mode");
-        m_modeSet = true;
-
-        // Initialize cursor
-
-        static int hideCursor = qEnvironmentVariableIntValue("QT_QPA_KMS_HIDECURSOR");
-        if (!hideCursor) {
-            QCursor cursor(Qt::ArrowCursor);
-            m_cursor->changeCursor(&cursor, 0);
-        }
-    }
-
-    int pageFlipStatus = drmModePageFlip(m_device->fd(), m_crtcId,
-                                         fb_id,
-                                         DRM_MODE_PAGE_FLIP_EVENT, this);
-    if (pageFlipStatus)
-    {
-        qWarning("Pageflip status: %d", pageFlipStatus);
-        gbm_surface_release_buffer(m_gbmSurface, m_next_bo);
-        m_next_bo = 0;
-    }
-}
-
-void QKmsScreen::handlePageFlipped()
-{
-    if (m_current_bo)
-        gbm_surface_release_buffer(m_gbmSurface, m_current_bo);
-
-    m_current_bo = m_next_bo;
-    m_next_bo = 0;
-}
-
-QKmsDevice * QKmsScreen::device() const
-{
-    return m_device;
-}
-
-void QKmsScreen::waitForPageFlipComplete()
-{
-    while (m_next_bo) {
-#if 0
-        //Check manually if there is something to be read on the device
-        //as there are senarios where the signal is not received (starvation)
-        fd_set fdSet;
-        timeval timeValue;
-        int returnValue;
-
-        FD_ZERO(&fdSet);
-        FD_SET(m_device->fd(), &fdSet);
-        timeValue.tv_sec = 0;
-        timeValue.tv_usec = 1000;
-
-        returnValue = select(1, &fdSet, 0, 0, &timeValue);
-        printf("select returns %d\n", returnValue);
-#endif
-
-        m_device->handlePageFlipCompleted();
-    }
-}
-
-
-QT_END_NAMESPACE