diff options
Diffstat (limited to 'src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsdevice.cpp')
| -rw-r--r-- | src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsdevice.cpp | 404 |
1 files changed, 404 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsdevice.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsdevice.cpp new file mode 100644 index 0000000000..f4ffee569d --- /dev/null +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_support/qeglfskmsdevice.cpp @@ -0,0 +1,404 @@ +/**************************************************************************** +** +** 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 "qeglfskmsdevice.h" +#include "qeglfskmsscreen.h" + +#include "qeglfsintegration.h" + +#include <QtCore/QLoggingCategory> +#include <QtCore/private/qcore_unix_p.h> +#include <QtGui/private/qguiapplication_p.h> + +#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0]) + +QT_BEGIN_NAMESPACE + +Q_DECLARE_LOGGING_CATEGORY(qLcEglfsKmsDebug) + +enum OutputConfiguration { + OutputConfigOff, + OutputConfigPreferred, + OutputConfigCurrent, + OutputConfigMode, + OutputConfigModeline +}; + +int QEglFSKmsDevice::crtcForConnector(drmModeResPtr resources, drmModeConnectorPtr connector) +{ + for (int i = 0; i < connector->count_encoders; i++) { + drmModeEncoderPtr encoder = drmModeGetEncoder(m_dri_fd, connector->encoders[i]); + if (!encoder) { + qWarning("Failed to get encoder"); + continue; + } + + quint32 possibleCrtcs = encoder->possible_crtcs; + drmModeFreeEncoder(encoder); + + for (int j = 0; j < resources->count_crtcs; j++) { + bool isPossible = possibleCrtcs & (1 << j); + bool isAvailable = !(m_crtc_allocator & 1 << resources->crtcs[j]); + + if (isPossible && isAvailable) + return j; + } + } + + return -1; +} + +static const char * const connector_type_names[] = { + "None", + "VGA", + "DVI", + "DVI", + "DVI", + "Composite", + "TV", + "LVDS", + "CTV", + "DIN", + "DP", + "HDMI", + "HDMI", + "TV", + "eDP", +}; + +static QByteArray nameForConnector(const drmModeConnectorPtr connector) +{ + QByteArray connectorName("UNKNOWN"); + + if (connector->connector_type < ARRAY_LENGTH(connector_type_names)) + connectorName = connector_type_names[connector->connector_type]; + + connectorName += QByteArray::number(connector->connector_type_id); + + return connectorName; +} + +static bool parseModeline(const QByteArray &text, drmModeModeInfoPtr mode) +{ + char hsync[16]; + char vsync[16]; + float fclock; + + mode->type = DRM_MODE_TYPE_USERDEF; + mode->hskew = 0; + mode->vscan = 0; + mode->vrefresh = 0; + mode->flags = 0; + + if (sscanf(text.constData(), "%f %hd %hd %hd %hd %hd %hd %hd %hd %15s %15s", + &fclock, + &mode->hdisplay, + &mode->hsync_start, + &mode->hsync_end, + &mode->htotal, + &mode->vdisplay, + &mode->vsync_start, + &mode->vsync_end, + &mode->vtotal, hsync, vsync) != 11) + return false; + + mode->clock = fclock * 1000; + + if (strcmp(hsync, "+hsync") == 0) + mode->flags |= DRM_MODE_FLAG_PHSYNC; + else if (strcmp(hsync, "-hsync") == 0) + mode->flags |= DRM_MODE_FLAG_NHSYNC; + else + return false; + + if (strcmp(vsync, "+vsync") == 0) + mode->flags |= DRM_MODE_FLAG_PVSYNC; + else if (strcmp(vsync, "-vsync") == 0) + mode->flags |= DRM_MODE_FLAG_NVSYNC; + else + return false; + + return true; +} + +QEglFSKmsScreen *QEglFSKmsDevice::screenForConnector(drmModeResPtr resources, drmModeConnectorPtr connector, QPoint pos) +{ + const QByteArray connectorName = nameForConnector(connector); + + const int crtc = crtcForConnector(resources, connector); + if (crtc < 0) { + qWarning() << "No usable crtc/encoder pair for connector" << connectorName; + return Q_NULLPTR; + } + + OutputConfiguration configuration; + QSize configurationSize; + drmModeModeInfo configurationModeline; + + const QByteArray mode = m_integration->outputSettings().value(QString::fromUtf8(connectorName)) + .value(QStringLiteral("mode"), QStringLiteral("preferred")).toByteArray().toLower(); + if (mode == "off") { + configuration = OutputConfigOff; + } else if (mode == "preferred") { + configuration = OutputConfigPreferred; + } else if (mode == "current") { + configuration = OutputConfigCurrent; + } else if (sscanf(mode.constData(), "%dx%d", &configurationSize.rwidth(), &configurationSize.rheight()) == 2) { + configuration = OutputConfigMode; + } else if (parseModeline(mode, &configurationModeline)) { + configuration = OutputConfigModeline; + } else { + qWarning("Invalid mode \"%s\" for output %s", mode.constData(), connectorName.constData()); + configuration = OutputConfigPreferred; + } + + const uint32_t crtc_id = resources->crtcs[crtc]; + + if (configuration == OutputConfigOff) { + qCDebug(qLcEglfsKmsDebug) << "Turning off output" << connectorName; + drmModeSetCrtc(m_dri_fd, crtc_id, 0, 0, 0, 0, 0, Q_NULLPTR); + return Q_NULLPTR; + } + + // Skip disconnected output + if (configuration == OutputConfigPreferred && connector->connection == DRM_MODE_DISCONNECTED) { + qCDebug(qLcEglfsKmsDebug) << "Skipping disconnected output" << connectorName; + return Q_NULLPTR; + } + + // Get the current mode on the current crtc + drmModeModeInfo crtc_mode; + memset(&crtc_mode, 0, sizeof crtc_mode); + if (drmModeEncoderPtr encoder = drmModeGetEncoder(m_dri_fd, connector->connector_id)) { + drmModeCrtcPtr crtc = drmModeGetCrtc(m_dri_fd, encoder->crtc_id); + drmModeFreeEncoder(encoder); + + if (!crtc) + return Q_NULLPTR; + + if (crtc->mode_valid) + crtc_mode = crtc->mode; + + drmModeFreeCrtc(crtc); + } + + QList<drmModeModeInfo> modes; + modes.reserve(connector->count_modes); + qCDebug(qLcEglfsKmsDebug) << connectorName << "mode count:" << connector->count_modes; + for (int i = 0; i < connector->count_modes; i++) { + const drmModeModeInfo &mode = connector->modes[i]; + qCDebug(qLcEglfsKmsDebug) << "mode" << i << mode.hdisplay << "x" << mode.vdisplay + << '@' << mode.vrefresh << "hz"; + modes << connector->modes[i]; + } + + int preferred = -1; + int current = -1; + int configured = -1; + int best = -1; + + for (int i = modes.size() - 1; i >= 0; i--) { + const drmModeModeInfo &m = modes.at(i); + + if (configuration == OutputConfigMode && + m.hdisplay == configurationSize.width() && + m.vdisplay == configurationSize.height()) { + configured = i; + } + + if (!memcmp(&crtc_mode, &m, sizeof m)) + current = i; + + if (m.type & DRM_MODE_TYPE_PREFERRED) + preferred = i; + + best = i; + } + + if (configuration == OutputConfigModeline) { + modes << configurationModeline; + configured = modes.size() - 1; + } + + if (current < 0 && crtc_mode.clock != 0) { + modes << crtc_mode; + current = mode.size() - 1; + } + + if (configuration == OutputConfigCurrent) + configured = current; + + int selected_mode = -1; + + if (configured >= 0) + selected_mode = configured; + else if (preferred >= 0) + selected_mode = preferred; + else if (current >= 0) + selected_mode = current; + else if (best >= 0) + selected_mode = best; + + if (selected_mode < 0) { + qWarning() << "No modes available for output" << connectorName; + return Q_NULLPTR; + } else { + int width = modes[selected_mode].hdisplay; + int height = modes[selected_mode].vdisplay; + int refresh = modes[selected_mode].vrefresh; + qCDebug(qLcEglfsKmsDebug) << "Selected mode" << selected_mode << ":" << width << "x" << height + << '@' << refresh << "hz for output" << connectorName; + } + static const int width = qEnvironmentVariableIntValue("QT_QPA_EGLFS_PHYSICAL_WIDTH"); + static const int height = qEnvironmentVariableIntValue("QT_QPA_EGLFS_PHYSICAL_HEIGHT"); + QSizeF size(width, height); + if (size.isEmpty()) { + size.setWidth(connector->mmWidth); + size.setHeight(connector->mmHeight); + } + QEglFSKmsOutput output = { + QString::fromUtf8(connectorName), + connector->connector_id, + crtc_id, + size, + selected_mode, + false, + drmModeGetCrtc(m_dri_fd, crtc_id), + modes, + connector->subpixel, + connectorProperty(connector, QByteArrayLiteral("DPMS")) + }; + + m_crtc_allocator |= (1 << output.crtc_id); + m_connector_allocator |= (1 << output.connector_id); + + return createScreen(m_integration, this, output, pos); +} + +drmModePropertyPtr QEglFSKmsDevice::connectorProperty(drmModeConnectorPtr connector, const QByteArray &name) +{ + drmModePropertyPtr prop; + + for (int i = 0; i < connector->count_props; i++) { + prop = drmModeGetProperty(m_dri_fd, connector->props[i]); + if (!prop) + continue; + if (strcmp(prop->name, name.constData()) == 0) + return prop; + drmModeFreeProperty(prop); + } + + return Q_NULLPTR; +} + +QEglFSKmsDevice::QEglFSKmsDevice(QEglFSKmsIntegration *integration, const QString &path) + : m_integration(integration) + , m_path(path) + , m_dri_fd(-1) + , m_crtc_allocator(0) + , m_connector_allocator(0) +{ +} + +QEglFSKmsDevice::~QEglFSKmsDevice() +{ +} + +void QEglFSKmsDevice::createScreens() +{ + drmModeResPtr resources = drmModeGetResources(m_dri_fd); + if (!resources) { + qWarning("drmModeGetResources failed"); + return; + } + + QEglFSKmsScreen *primaryScreen = Q_NULLPTR; + QList<QPlatformScreen *> siblings; + QPoint pos(0, 0); + QEglFSIntegration *integration = static_cast<QEglFSIntegration *>(QGuiApplicationPrivate::platformIntegration()); + + for (int i = 0; i < resources->count_connectors; i++) { + drmModeConnectorPtr connector = drmModeGetConnector(m_dri_fd, resources->connectors[i]); + if (!connector) + continue; + + QEglFSKmsScreen *screen = screenForConnector(resources, connector, pos); + if (screen) { + integration->addScreen(screen); + pos.rx() += screen->geometry().width(); + siblings << screen; + + if (!primaryScreen) + primaryScreen = screen; + } + + drmModeFreeConnector(connector); + } + + drmModeFreeResources(resources); + + if (!m_integration->separateScreens()) { + Q_FOREACH (QPlatformScreen *screen, siblings) + static_cast<QEglFSKmsScreen *>(screen)->setVirtualSiblings(siblings); + } +} + +int QEglFSKmsDevice::fd() const +{ + return m_dri_fd; +} + +QString QEglFSKmsDevice::devicePath() const +{ + return m_path; +} + +QEglFSKmsScreen *QEglFSKmsDevice::createScreen(QEglFSKmsIntegration *integration, QEglFSKmsDevice *device, QEglFSKmsOutput output, QPoint position) +{ + return new QEglFSKmsScreen(integration, device, output, position); +} + +void QEglFSKmsDevice::setFd(int fd) +{ + m_dri_fd = fd; +} + +QT_END_NAMESPACE |