kms: Discover all available planes
Task-number: QTBUG-63058 Change-Id: I655384916bedbeb0da516e2eaa177d1128272d1c Reviewed-by: Andy Nichols <andy.nichols@qt.io> Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
This commit is contained in:
Laszlo Agocs
parent
a31b5bf5da
commit
93dd85141b
@ -384,6 +384,20 @@ QPlatformScreen *QKmsDevice::createScreenForConnector(drmModeResPtr resources,
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output.drm_format = drmFormat;
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output.clone_source = cloneSource;
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QString planeListStr;
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for (const QKmsPlane &plane : qAsConst(m_planes)) {
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if (plane.possibleCrtcs & (1 << output.crtc_index)) {
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output.available_planes.append(plane);
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planeListStr.append(QString::number(plane.id));
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planeListStr.append(QLatin1Char(' '));
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}
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}
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qCDebug(qLcKmsDebug, "Output %s can use %d planes: %s",
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connectorName.constData(), output.available_planes.count(), qPrintable(planeListStr));
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// This is for the EGLDevice/EGLStream backend. On some of those devices one
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// may want to target a pre-configured plane. It is probably useless for
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// eglfs_kms and others. Do not confuse with generic plane support (available_planes).
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bool ok;
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int idx = qEnvironmentVariableIntValue("QT_QPA_EGLFS_KMS_PLANE_INDEX", &ok);
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if (ok) {
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@ -504,12 +518,16 @@ void QKmsDevice::createScreens()
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}
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}
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drmSetClientCap(m_dri_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
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drmModeResPtr resources = drmModeGetResources(m_dri_fd);
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if (!resources) {
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qErrnoWarning(errno, "drmModeGetResources failed");
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return;
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}
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discoverPlanes();
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QVector<OrderedScreen> screens;
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int wantedConnectorIndex = -1;
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@ -628,6 +646,116 @@ void QKmsDevice::registerScreenCloning(QPlatformScreen *screen,
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Q_UNUSED(screensCloningThisScreen);
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}
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// drm_property_type_is is not available in old headers
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static inline bool propTypeIs(drmModePropertyPtr prop, uint32_t type)
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{
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if (prop->flags & DRM_MODE_PROP_EXTENDED_TYPE)
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return (prop->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
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return prop->flags & type;
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}
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void QKmsDevice::enumerateProperties(drmModeObjectPropertiesPtr objProps, PropCallback callback)
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{
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for (uint32_t propIdx = 0; propIdx < objProps->count_props; ++propIdx) {
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drmModePropertyPtr prop = drmModeGetProperty(m_dri_fd, objProps->props[propIdx]);
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if (!prop)
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continue;
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const quint64 value = objProps->prop_values[propIdx];
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qCDebug(qLcKmsDebug, " property %d: id = %u name = '%s'", propIdx, prop->prop_id, prop->name);
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if (propTypeIs(prop, DRM_MODE_PROP_SIGNED_RANGE)) {
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qCDebug(qLcKmsDebug, " type is SIGNED_RANGE, value is %lld, possible values are:", qint64(value));
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for (int i = 0; i < prop->count_values; ++i)
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qCDebug(qLcKmsDebug, " %lld", qint64(prop->values[i]));
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} else if (propTypeIs(prop, DRM_MODE_PROP_RANGE)) {
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qCDebug(qLcKmsDebug, " type is RANGE, value is %llu, possible values are:", value);
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for (int i = 0; i < prop->count_values; ++i)
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qCDebug(qLcKmsDebug, " %llu", quint64(prop->values[i]));
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} else if (propTypeIs(prop, DRM_MODE_PROP_ENUM)) {
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qCDebug(qLcKmsDebug, " type is ENUM, value is %llu, possible values are:", value);
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for (int i = 0; i < prop->count_enums; ++i)
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qCDebug(qLcKmsDebug, " enum %d: %s - %llu", i, prop->enums[i].name, prop->enums[i].value);
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} else if (propTypeIs(prop, DRM_MODE_PROP_BITMASK)) {
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qCDebug(qLcKmsDebug, " type is BITMASK, value is %llu, possible bits are:", value);
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for (int i = 0; i < prop->count_enums; ++i)
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qCDebug(qLcKmsDebug, " bitmask %d: %s - %u", i, prop->enums[i].name, 1 << prop->enums[i].value);
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} else if (propTypeIs(prop, DRM_MODE_PROP_BLOB)) {
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qCDebug(qLcKmsDebug, " type is BLOB");
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} else if (propTypeIs(prop, DRM_MODE_PROP_OBJECT)) {
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qCDebug(qLcKmsDebug, " type is OBJECT");
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}
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callback(prop, value);
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drmModeFreeProperty(prop);
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}
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}
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void QKmsDevice::discoverPlanes()
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{
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m_planes.clear();
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drmModePlaneResPtr planeResources = drmModeGetPlaneResources(m_dri_fd);
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if (!planeResources)
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return;
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const int countPlanes = planeResources->count_planes;
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qCDebug(qLcKmsDebug, "Found %d planes", countPlanes);
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for (int planeIdx = 0; planeIdx < countPlanes; ++planeIdx) {
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drmModePlanePtr drmplane = drmModeGetPlane(m_dri_fd, planeResources->planes[planeIdx]);
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if (!drmplane) {
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qCDebug(qLcKmsDebug, "Failed to query plane %d, ignoring", planeIdx);
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continue;
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}
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QKmsPlane plane;
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plane.id = drmplane->plane_id;
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plane.possibleCrtcs = drmplane->possible_crtcs;
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const int countFormats = drmplane->count_formats;
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QString formatStr;
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for (int i = 0; i < countFormats; ++i) {
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uint32_t f = drmplane->formats[i];
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plane.supportedFormats.append(f);
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QString s;
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s.sprintf("%c%c%c%c ", f, f >> 8, f >> 16, f >> 24);
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formatStr += s;
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}
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qCDebug(qLcKmsDebug, "plane %d: id = %u countFormats = %d possibleCrtcs = 0x%x supported formats = %s",
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planeIdx, plane.id, countFormats, plane.possibleCrtcs, qPrintable(formatStr));
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drmModeFreePlane(drmplane);
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drmModeObjectPropertiesPtr objProps = drmModeObjectGetProperties(m_dri_fd, plane.id, DRM_MODE_OBJECT_PLANE);
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if (!objProps) {
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qCDebug(qLcKmsDebug, "Failed to query plane %d object properties, ignoring", planeIdx);
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continue;
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}
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enumerateProperties(objProps, [this, &plane](drmModePropertyPtr prop, quint64 value) {
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if (!strcmp(prop->name, "type")) {
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plane.type = QKmsPlane::Type(value);
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} else if (!strcmp(prop->name, "rotation")) {
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plane.initialRotation = QKmsPlane::Rotations(int(value));
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plane.availableRotations = 0;
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if (propTypeIs(prop, DRM_MODE_PROP_BITMASK)) {
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for (int i = 0; i < prop->count_enums; ++i)
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plane.availableRotations |= QKmsPlane::Rotation(1 << prop->enums[i].value);
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}
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plane.rotationPropertyId = prop->prop_id;
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}
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});
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m_planes.append(plane);
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drmModeFreeObjectProperties(objProps);
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}
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drmModeFreePlaneResources(planeResources);
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}
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int QKmsDevice::fd() const
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{
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return m_dri_fd;
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@ -61,6 +61,41 @@
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#include <xf86drmMode.h>
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#include <drm_fourcc.h>
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#include <functional>
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// In less fortunate cases one may need to build on a system with dev headers
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// from the dark ages. Let's pull a GL and define the missing stuff outselves.
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#ifndef DRM_PLANE_TYPE_OVERLAY
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#define DRM_PLANE_TYPE_OVERLAY 0
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#endif
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#ifndef DRM_PLANE_TYPE_PRIMARY
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#define DRM_PLANE_TYPE_PRIMARY 1
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#endif
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#ifndef DRM_PLANE_TYPE_CURSOR
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#define DRM_PLANE_TYPE_CURSOR 2
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#endif
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#ifndef DRM_CLIENT_CAP_UNIVERSAL_PLANES
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#define DRM_CLIENT_CAP_UNIVERSAL_PLANES 2
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#endif
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#ifndef DRM_CLIENT_CAP_ATOMIC
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#define DRM_CLIENT_CAP_ATOMIC 3
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#endif
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#ifndef DRM_MODE_PROP_EXTENDED_TYPE
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#define DRM_MODE_PROP_EXTENDED_TYPE 0x0000ffc0
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#endif
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#ifndef DRM_MODE_PROP_TYPE
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#define DRM_MODE_PROP_TYPE(n) ((n) << 6)
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#endif
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#ifndef DRM_MODE_PROP_OBJECT
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#define DRM_MODE_PROP_OBJECT DRM_MODE_PROP_TYPE(1)
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#endif
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#ifndef DRM_MODE_PROP_SIGNED_RANGE
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#define DRM_MODE_PROP_SIGNED_RANGE DRM_MODE_PROP_TYPE(2)
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#endif
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QT_BEGIN_NAMESPACE
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class QKmsDevice;
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@ -99,6 +134,42 @@ private:
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QMap<QString, QVariantMap> m_outputSettings;
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};
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// NB! QKmsPlane does not store the current state and offers no functions to
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// change object properties. Any such functionality belongs to subclasses since
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// in some cases atomic operations will be desired where a mere
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// drmModeObjectSetProperty would not be acceptable.
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struct QKmsPlane
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{
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enum Type {
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OverlayPlane = DRM_PLANE_TYPE_OVERLAY,
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PrimaryPlane = DRM_PLANE_TYPE_PRIMARY,
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CursorPlane = DRM_PLANE_TYPE_CURSOR
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};
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enum Rotation {
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Rotation0 = 1 << 0,
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Rotation90 = 1 << 1,
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Rotation180 = 1 << 2,
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Rotation270 = 1 << 3,
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RotationReflectX = 1 << 4,
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RotationReflectY = 1 << 5
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};
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Q_DECLARE_FLAGS(Rotations, Rotation)
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uint32_t id = 0;
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Type type = OverlayPlane;
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int possibleCrtcs = 0;
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QVector<uint32_t> supportedFormats;
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Rotations initialRotation = Rotation0;
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Rotations availableRotations = Rotation0;
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uint32_t rotationPropertyId = 0;
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(QKmsPlane::Rotations)
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struct QKmsOutput
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{
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QString name;
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@ -119,6 +190,7 @@ struct QKmsOutput
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bool forced_plane_set = false;
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uint32_t drm_format = DRM_FORMAT_XRGB8888;
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QString clone_source;
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QVector<QKmsPlane> available_planes;
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void restoreMode(QKmsDevice *device);
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void cleanup(QKmsDevice *device);
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@ -168,6 +240,9 @@ protected:
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ScreenInfo *vinfo);
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drmModePropertyPtr connectorProperty(drmModeConnectorPtr connector, const QByteArray &name);
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drmModePropertyBlobPtr connectorPropertyBlob(drmModeConnectorPtr connector, const QByteArray &name);
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typedef std::function<void(drmModePropertyPtr, quint64)> PropCallback;
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void enumerateProperties(drmModeObjectPropertiesPtr objProps, PropCallback callback);
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void discoverPlanes();
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QKmsScreenConfig *m_screenConfig;
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QString m_path;
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@ -175,6 +250,8 @@ protected:
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quint32 m_crtc_allocator;
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QVector<QKmsPlane> m_planes;
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private:
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Q_DISABLE_COPY(QKmsDevice)
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};
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