1 files changed, 0 insertions, 717 deletions

diff --git a/src/cam/drm.cpp b/src/cam/drm.cpp
deleted file mode 100644
index 2e4d7985..00000000
--- a/src/cam/drm.cpp
+++ /dev/null
@@ -1,717 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2021, Ideas on Board Oy
- *
- * drm.cpp - DRM/KMS Helpers
- */
-
-#include "drm.h"
-
-#include <algorithm>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <iostream>
-#include <set>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <libcamera/framebuffer.h>
-#include <libcamera/geometry.h>
-#include <libcamera/pixel_format.h>
-
-#include <libdrm/drm_mode.h>
-
-#include "event_loop.h"
-
-namespace DRM {
-
-Object::Object(Device *dev, uint32_t id, Type type)
-	: id_(id), dev_(dev), type_(type)
-{
-	/* Retrieve properties from the objects that support them. */
-	if (type != TypeConnector && type != TypeCrtc &&
-	    type != TypeEncoder && type != TypePlane)
-		return;
-
-	/*
-	 * We can't distinguish between failures due to the object having no
-	 * property and failures due to other conditions. Assume we use the API
-	 * correctly and consider the object has no property.
-	 */
-	drmModeObjectProperties *properties = drmModeObjectGetProperties(dev->fd(), id, type);
-	if (!properties)
-		return;
-
-	properties_.reserve(properties->count_props);
-	for (uint32_t i = 0; i < properties->count_props; ++i)
-		properties_.emplace_back(properties->props[i],
-					 properties->prop_values[i]);
-
-	drmModeFreeObjectProperties(properties);
-}
-
-Object::~Object()
-{
-}
-
-const Property *Object::property(const std::string &name) const
-{
-	for (const PropertyValue &pv : properties_) {
-		const Property *property = static_cast<const Property *>(dev_->object(pv.id()));
-		if (property && property->name() == name)
-			return property;
-	}
-
-	return nullptr;
-}
-
-const PropertyValue *Object::propertyValue(const std::string &name) const
-{
-	for (const PropertyValue &pv : properties_) {
-		const Property *property = static_cast<const Property *>(dev_->object(pv.id()));
-		if (property && property->name() == name)
-			return &pv;
-	}
-
-	return nullptr;
-}
-
-Property::Property(Device *dev, drmModePropertyRes *property)
-	: Object(dev, property->prop_id, TypeProperty),
-	  name_(property->name), flags_(property->flags),
-	  values_(property->values, property->values + property->count_values),
-	  blobs_(property->blob_ids, property->blob_ids + property->count_blobs)
-{
-	if (drm_property_type_is(property, DRM_MODE_PROP_RANGE))
-		type_ = TypeRange;
-	else if (drm_property_type_is(property, DRM_MODE_PROP_ENUM))
-		type_ = TypeEnum;
-	else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
-		type_ = TypeBlob;
-	else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK))
-		type_ = TypeBitmask;
-	else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT))
-		type_ = TypeObject;
-	else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE))
-		type_ = TypeSignedRange;
-	else
-		type_ = TypeUnknown;
-
-	for (int i = 0; i < property->count_enums; ++i)
-		enums_[property->enums[i].value] = property->enums[i].name;
-}
-
-Blob::Blob(Device *dev, const libcamera::Span<const uint8_t> &data)
-	: Object(dev, 0, Object::TypeBlob)
-{
-	drmModeCreatePropertyBlob(dev->fd(), data.data(), data.size(), &id_);
-}
-
-Blob::~Blob()
-{
-	if (isValid())
-		drmModeDestroyPropertyBlob(device()->fd(), id());
-}
-
-Mode::Mode(const drmModeModeInfo &mode)
-	: drmModeModeInfo(mode)
-{
-}
-
-std::unique_ptr<Blob> Mode::toBlob(Device *dev) const
-{
-	libcamera::Span<const uint8_t> data{ reinterpret_cast<const uint8_t *>(this),
-					     sizeof(*this) };
-	return std::make_unique<Blob>(dev, data);
-}
-
-Crtc::Crtc(Device *dev, const drmModeCrtc *crtc, unsigned int index)
-	: Object(dev, crtc->crtc_id, Object::TypeCrtc), index_(index)
-{
-}
-
-Encoder::Encoder(Device *dev, const drmModeEncoder *encoder)
-	: Object(dev, encoder->encoder_id, Object::TypeEncoder),
-	  type_(encoder->encoder_type)
-{
-	const std::list<Crtc> &crtcs = dev->crtcs();
-	possibleCrtcs_.reserve(crtcs.size());
-
-	for (const Crtc &crtc : crtcs) {
-		if (encoder->possible_crtcs & (1 << crtc.index()))
-			possibleCrtcs_.push_back(&crtc);
-	}
-
-	possibleCrtcs_.shrink_to_fit();
-}
-
-namespace {
-
-const std::map<uint32_t, const char *> connectorTypeNames{
-	{ DRM_MODE_CONNECTOR_Unknown, "Unknown" },
-	{ DRM_MODE_CONNECTOR_VGA, "VGA" },
-	{ DRM_MODE_CONNECTOR_DVII, "DVI-I" },
-	{ DRM_MODE_CONNECTOR_DVID, "DVI-D" },
-	{ DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
-	{ DRM_MODE_CONNECTOR_Composite, "Composite" },
-	{ DRM_MODE_CONNECTOR_SVIDEO, "S-Video" },
-	{ DRM_MODE_CONNECTOR_LVDS, "LVDS" },
-	{ DRM_MODE_CONNECTOR_Component, "Component" },
-	{ DRM_MODE_CONNECTOR_9PinDIN, "9-Pin-DIN" },
-	{ DRM_MODE_CONNECTOR_DisplayPort, "DP" },
-	{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
-	{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
-	{ DRM_MODE_CONNECTOR_TV, "TV" },
-	{ DRM_MODE_CONNECTOR_eDP, "eDP" },
-	{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
-	{ DRM_MODE_CONNECTOR_DSI, "DSI" },
-	{ DRM_MODE_CONNECTOR_DPI, "DPI" },
-};
-
-} /* namespace */
-
-Connector::Connector(Device *dev, const drmModeConnector *connector)
-	: Object(dev, connector->connector_id, Object::TypeConnector),
-	  type_(connector->connector_type)
-{
-	auto typeName = connectorTypeNames.find(connector->connector_type);
-	if (typeName == connectorTypeNames.end()) {
-		std::cerr
-			<< "Invalid connector type "
-			<< connector->connector_type << std::endl;
-		typeName = connectorTypeNames.find(DRM_MODE_CONNECTOR_Unknown);
-	}
-
-	name_ = std::string(typeName->second) + "-"
-	      + std::to_string(connector->connector_type_id);
-
-	switch (connector->connection) {
-	case DRM_MODE_CONNECTED:
-		status_ = Status::Connected;
-		break;
-
-	case DRM_MODE_DISCONNECTED:
-		status_ = Status::Disconnected;
-		break;
-
-	case DRM_MODE_UNKNOWNCONNECTION:
-	default:
-		status_ = Status::Unknown;
-		break;
-	}
-
-	const std::list<Encoder> &encoders = dev->encoders();
-
-	encoders_.reserve(connector->count_encoders);
-
-	for (int i = 0; i < connector->count_encoders; ++i) {
-		uint32_t encoderId = connector->encoders[i];
-		auto encoder = std::find_if(encoders.begin(), encoders.end(),
-					    [=](const Encoder &e) {
-						    return e.id() == encoderId;
-					    });
-		if (encoder == encoders.end()) {
-			std::cerr
-				<< "Encoder " << encoderId << " not found"
-				<< std::endl;
-			continue;
-		}
-
-		encoders_.push_back(&*encoder);
-	}
-
-	encoders_.shrink_to_fit();
-
-	modes_ = { connector->modes, connector->modes + connector->count_modes };
-}
-
-Plane::Plane(Device *dev, const drmModePlane *plane)
-	: Object(dev, plane->plane_id, Object::TypePlane),
-	  possibleCrtcsMask_(plane->possible_crtcs)
-{
-	formats_ = { plane->formats, plane->formats + plane->count_formats };
-
-	const std::list<Crtc> &crtcs = dev->crtcs();
-	possibleCrtcs_.reserve(crtcs.size());
-
-	for (const Crtc &crtc : crtcs) {
-		if (plane->possible_crtcs & (1 << crtc.index()))
-			possibleCrtcs_.push_back(&crtc);
-	}
-
-	possibleCrtcs_.shrink_to_fit();
-}
-
-bool Plane::supportsFormat(const libcamera::PixelFormat &format) const
-{
-	return std::find(formats_.begin(), formats_.end(), format.fourcc())
-		!= formats_.end();
-}
-
-int Plane::setup()
-{
-	const PropertyValue *pv = propertyValue("type");
-	if (!pv)
-		return -EINVAL;
-
-	switch (pv->value()) {
-	case DRM_PLANE_TYPE_OVERLAY:
-		type_ = TypeOverlay;
-		break;
-
-	case DRM_PLANE_TYPE_PRIMARY:
-		type_ = TypePrimary;
-		break;
-
-	case DRM_PLANE_TYPE_CURSOR:
-		type_ = TypeCursor;
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-FrameBuffer::FrameBuffer(Device *dev)
-	: Object(dev, 0, Object::TypeFb)
-{
-}
-
-FrameBuffer::~FrameBuffer()
-{
-	for (const auto &plane : planes_) {
-		struct drm_gem_close gem_close = {
-			.handle = plane.second.handle,
-			.pad = 0,
-		};
-		int ret;
-
-		do {
-			ret = ioctl(device()->fd(), DRM_IOCTL_GEM_CLOSE, &gem_close);
-		} while (ret == -1 && (errno == EINTR || errno == EAGAIN));
-
-		if (ret == -1) {
-			ret = -errno;
-			std::cerr
-				<< "Failed to close GEM object: "
-				<< strerror(-ret) << std::endl;
-		}
-	}
-
-	drmModeRmFB(device()->fd(), id());
-}
-
-AtomicRequest::AtomicRequest(Device *dev)
-	: dev_(dev), valid_(true)
-{
-	request_ = drmModeAtomicAlloc();
-	if (!request_)
-		valid_ = false;
-}
-
-AtomicRequest::~AtomicRequest()
-{
-	if (request_)
-		drmModeAtomicFree(request_);
-}
-
-int AtomicRequest::addProperty(const Object *object, const std::string &property,
-			       uint64_t value)
-{
-	if (!valid_)
-		return -EINVAL;
-
-	const Property *prop = object->property(property);
-	if (!prop) {
-		valid_ = false;
-		return -EINVAL;
-	}
-
-	return addProperty(object->id(), prop->id(), value);
-}
-
-int AtomicRequest::addProperty(const Object *object, const std::string &property,
-			       std::unique_ptr<Blob> blob)
-{
-	if (!valid_)
-		return -EINVAL;
-
-	const Property *prop = object->property(property);
-	if (!prop) {
-		valid_ = false;
-		return -EINVAL;
-	}
-
-	int ret = addProperty(object->id(), prop->id(), blob->id());
-	if (ret < 0)
-		return ret;
-
-	blobs_.emplace_back(std::move(blob));
-
-	return 0;
-}
-
-int AtomicRequest::addProperty(uint32_t object, uint32_t property, uint64_t value)
-{
-	int ret = drmModeAtomicAddProperty(request_, object, property, value);
-	if (ret < 0) {
-		valid_ = false;
-		return ret;
-	}
-
-	return 0;
-}
-
-int AtomicRequest::commit(unsigned int flags)
-{
-	if (!valid_)
-		return -EINVAL;
-
-	uint32_t drmFlags = 0;
-	if (flags & FlagAllowModeset)
-		drmFlags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
-	if (flags & FlagAsync)
-		drmFlags |= DRM_MODE_PAGE_FLIP_EVENT | DRM_MODE_ATOMIC_NONBLOCK;
-	if (flags & FlagTestOnly)
-		drmFlags |= DRM_MODE_ATOMIC_TEST_ONLY;
-
-	return drmModeAtomicCommit(dev_->fd(), request_, drmFlags, this);
-}
-
-Device::Device()
-	: fd_(-1)
-{
-}
-
-Device::~Device()
-{
-	if (fd_ != -1)
-		drmClose(fd_);
-}
-
-int Device::init()
-{
-	int ret = openCard();
-	if (ret < 0) {
-		std::cerr << "Failed to open any DRM/KMS device: "
-			  << strerror(-ret) << std::endl;
-		return ret;
-	}
-
-	/*
-	 * Enable the atomic APIs. This also automatically enables the
-	 * universal planes API.
-	 */
-	ret = drmSetClientCap(fd_, DRM_CLIENT_CAP_ATOMIC, 1);
-	if (ret < 0) {
-		ret = -errno;
-		std::cerr
-			<< "Failed to enable atomic capability: "
-			<< strerror(-ret) << std::endl;
-		return ret;
-	}
-
-	/* List all the resources. */
-	ret = getResources();
-	if (ret < 0)
-		return ret;
-
-	EventLoop::instance()->addFdEvent(fd_, EventLoop::Read,
-					  std::bind(&Device::drmEvent, this));
-
-	return 0;
-}
-
-int Device::openCard()
-{
-	const std::string dirName = "/dev/dri/";
-	bool found = false;
-	int ret;
-
-	/*
-	 * Open the first DRM/KMS device beginning with /dev/dri/card. The
-	 * libdrm drmOpen*() functions require either a module name or a bus ID,
-	 * which we don't have, so bypass them. The automatic module loading and
-	 * device node creation from drmOpen() is of no practical use as any
-	 * modern system will handle that through udev or an equivalent
-	 * component.
-	 */
-	DIR *folder = opendir(dirName.c_str());
-	if (!folder) {
-		ret = -errno;
-		std::cerr << "Failed to open " << dirName
-			  << " directory: " << strerror(-ret) << std::endl;
-		return ret;
-	}
-
-	for (struct dirent *res; (res = readdir(folder));) {
-		uint64_t cap;
-
-		if (strncmp(res->d_name, "card", 4))
-			continue;
-
-		const std::string devName = dirName + res->d_name;
-		fd_ = open(devName.c_str(), O_RDWR | O_CLOEXEC);
-		if (fd_ < 0) {
-			ret = -errno;
-			std::cerr << "Failed to open DRM/KMS device " << devName << ": "
-				  << strerror(-ret) << std::endl;
-			continue;
-		}
-
-		/*
-		 * Skip devices that don't support the modeset API, to avoid
-		 * selecting a DRM device corresponding to a GPU. There is no
-		 * modeset capability, but the kernel returns an error for most
-		 * caps if mode setting isn't support by the driver. The
-		 * DRM_CAP_DUMB_BUFFER capability is one of those, other would
-		 * do as well. The capability value itself isn't relevant.
-		 */
-		ret = drmGetCap(fd_, DRM_CAP_DUMB_BUFFER, &cap);
-		if (ret < 0) {
-			drmClose(fd_);
-			fd_ = -1;
-			continue;
-		}
-
-		found = true;
-		break;
-	}
-
-	closedir(folder);
-
-	return found ? 0 : -ENOENT;
-}
-
-int Device::getResources()
-{
-	int ret;
-
-	std::unique_ptr<drmModeRes, decltype(&drmModeFreeResources)> resources{
-		drmModeGetResources(fd_),
-		&drmModeFreeResources
-	};
-	if (!resources) {
-		ret = -errno;
-		std::cerr
-			<< "Failed to get DRM/KMS resources: "
-			<< strerror(-ret) << std::endl;
-		return ret;
-	}
-
-	for (int i = 0; i < resources->count_crtcs; ++i) {
-		drmModeCrtc *crtc = drmModeGetCrtc(fd_, resources->crtcs[i]);
-		if (!crtc) {
-			ret = -errno;
-			std::cerr
-				<< "Failed to get CRTC: " << strerror(-ret)
-				<< std::endl;
-			return ret;
-		}
-
-		crtcs_.emplace_back(this, crtc, i);
-		drmModeFreeCrtc(crtc);
-
-		Crtc &obj = crtcs_.back();
-		objects_[obj.id()] = &obj;
-	}
-
-	for (int i = 0; i < resources->count_encoders; ++i) {
-		drmModeEncoder *encoder =
-			drmModeGetEncoder(fd_, resources->encoders[i]);
-		if (!encoder) {
-			ret = -errno;
-			std::cerr
-				<< "Failed to get encoder: " << strerror(-ret)
-				<< std::endl;
-			return ret;
-		}
-
-		encoders_.emplace_back(this, encoder);
-		drmModeFreeEncoder(encoder);
-
-		Encoder &obj = encoders_.back();
-		objects_[obj.id()] = &obj;
-	}
-
-	for (int i = 0; i < resources->count_connectors; ++i) {
-		drmModeConnector *connector =
-			drmModeGetConnector(fd_, resources->connectors[i]);
-		if (!connector) {
-			ret = -errno;
-			std::cerr
-				<< "Failed to get connector: " << strerror(-ret)
-				<< std::endl;
-			return ret;
-		}
-
-		connectors_.emplace_back(this, connector);
-		drmModeFreeConnector(connector);
-
-		Connector &obj = connectors_.back();
-		objects_[obj.id()] = &obj;
-	}
-
-	std::unique_ptr<drmModePlaneRes, decltype(&drmModeFreePlaneResources)> planes{
-		drmModeGetPlaneResources(fd_),
-		&drmModeFreePlaneResources
-	};
-	if (!planes) {
-		ret = -errno;
-		std::cerr
-			<< "Failed to get DRM/KMS planes: "
-			<< strerror(-ret) << std::endl;
-		return ret;
-	}
-
-	for (uint32_t i = 0; i < planes->count_planes; ++i) {
-		drmModePlane *plane =
-			drmModeGetPlane(fd_, planes->planes[i]);
-		if (!plane) {
-			ret = -errno;
-			std::cerr
-				<< "Failed to get plane: " << strerror(-ret)
-				<< std::endl;
-			return ret;
-		}
-
-		planes_.emplace_back(this, plane);
-		drmModeFreePlane(plane);
-
-		Plane &obj = planes_.back();
-		objects_[obj.id()] = &obj;
-	}
-
-	/* Set the possible planes for each CRTC. */
-	for (Crtc &crtc : crtcs_) {
-		for (const Plane &plane : planes_) {
-			if (plane.possibleCrtcsMask_ & (1 << crtc.index()))
-				crtc.planes_.push_back(&plane);
-		}
-	}
-
-	/* Collect all property IDs and create Property instances. */
-	std::set<uint32_t> properties;
-	for (const auto &object : objects_) {
-		for (const PropertyValue &value : object.second->properties())
-			properties.insert(value.id());
-	}
-
-	for (uint32_t id : properties) {
-		drmModePropertyRes *property = drmModeGetProperty(fd_, id);
-		if (!property) {
-			ret = -errno;
-			std::cerr
-				<< "Failed to get property: " << strerror(-ret)
-				<< std::endl;
-			continue;
-		}
-
-		properties_.emplace_back(this, property);
-		drmModeFreeProperty(property);
-
-		Property &obj = properties_.back();
-		objects_[obj.id()] = &obj;
-	}
-
-	/* Finally, perform all delayed setup of mode objects. */
-	for (auto &object : objects_) {
-		ret = object.second->setup();
-		if (ret < 0) {
-			std::cerr
-				<< "Failed to setup object " << object.second->id()
-				<< ": " << strerror(-ret) << std::endl;
-			return ret;
-		}
-	}
-
-	return 0;
-}
-
-const Object *Device::object(uint32_t id)
-{
-	const auto iter = objects_.find(id);
-	if (iter == objects_.end())
-		return nullptr;
-
-	return iter->second;
-}
-
-std::unique_ptr<FrameBuffer> Device::createFrameBuffer(
-	const libcamera::FrameBuffer &buffer,
-	const libcamera::PixelFormat &format,
-	const libcamera::Size &size,
-	const std::array<uint32_t, 4> &strides)
-{
-	std::unique_ptr<FrameBuffer> fb{ new FrameBuffer(this) };
-
-	uint32_t handles[4] = {};
-	uint32_t offsets[4] = {};
-	int ret;
-
-	const std::vector<libcamera::FrameBuffer::Plane> &planes = buffer.planes();
-
-	unsigned int i = 0;
-	for (const libcamera::FrameBuffer::Plane &plane : planes) {
-		int fd = plane.fd.get();
-		uint32_t handle;
-
-		auto iter = fb->planes_.find(fd);
-		if (iter == fb->planes_.end()) {
-			ret = drmPrimeFDToHandle(fd_, plane.fd.get(), &handle);
-			if (ret < 0) {
-				ret = -errno;
-				std::cerr
-					<< "Unable to import framebuffer dmabuf: "
-					<< strerror(-ret) << std::endl;
-				return nullptr;
-			}
-
-			fb->planes_[fd] = { handle };
-		} else {
-			handle = iter->second.handle;
-		}
-
-		handles[i] = handle;
-		offsets[i] = plane.offset;
-		++i;
-	}
-
-	ret = drmModeAddFB2(fd_, size.width, size.height, format.fourcc(), handles,
-			    strides.data(), offsets, &fb->id_, 0);
-	if (ret < 0) {
-		ret = -errno;
-		std::cerr
-			<< "Failed to add framebuffer: "
-			<< strerror(-ret) << std::endl;
-		return nullptr;
-	}
-
-	return fb;
-}
-
-void Device::drmEvent()
-{
-	drmEventContext ctx{};
-	ctx.version = DRM_EVENT_CONTEXT_VERSION;
-	ctx.page_flip_handler = &Device::pageFlipComplete;
-
-	drmHandleEvent(fd_, &ctx);
-}
-
-void Device::pageFlipComplete([[maybe_unused]] int fd,
-			      [[maybe_unused]] unsigned int sequence,
-			      [[maybe_unused]] unsigned int tv_sec,
-			      [[maybe_unused]] unsigned int tv_usec,
-			      void *user_data)
-{
-	AtomicRequest *request = static_cast<AtomicRequest *>(user_data);
-	request->device()->requestComplete.emit(request);
-}
-
-} /* namespace DRM */