| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define ATRACE_TAG ATRACE_TAG_GRAPHICS |
| #define LOG_TAG "hwc-drm-display-compositor" |
| |
| #include "DrmDisplayCompositor.h" |
| |
| #include <drm/drm_mode.h> |
| #include <pthread.h> |
| #include <sched.h> |
| #include <sync/sync.h> |
| #include <utils/Trace.h> |
| |
| #include <array> |
| #include <cstdlib> |
| #include <ctime> |
| #include <sstream> |
| #include <vector> |
| |
| #include "drm/DrmCrtc.h" |
| #include "drm/DrmDevice.h" |
| #include "drm/DrmPlane.h" |
| #include "drm/DrmUnique.h" |
| #include "utils/log.h" |
| |
| namespace android { |
| |
| auto DrmDisplayCompositor::Init(ResourceManager *resource_manager, int display) |
| -> int { |
| resource_manager_ = resource_manager; |
| display_ = display; |
| DrmDevice *drm = resource_manager_->GetDrmDevice(display); |
| if (!drm) { |
| ALOGE("Could not find drmdevice for display"); |
| return -EINVAL; |
| } |
| |
| initialized_ = true; |
| return 0; |
| } |
| |
| // NOLINTNEXTLINE (readability-function-cognitive-complexity): Fixme |
| auto DrmDisplayCompositor::CommitFrame(AtomicCommitArgs &args) -> int { |
| ATRACE_CALL(); |
| |
| if (args.active && *args.active == active_frame_state_.crtc_active_state) { |
| /* Don't set the same state twice */ |
| args.active.reset(); |
| } |
| |
| if (!args.HasInputs()) { |
| /* nothing to do */ |
| return 0; |
| } |
| |
| if (!active_frame_state_.crtc_active_state) { |
| /* Force activate display */ |
| args.active = true; |
| } |
| |
| if (args.clear_active_composition && args.composition) { |
| ALOGE("%s: Invalid arguments", __func__); |
| return -EINVAL; |
| } |
| |
| auto new_frame_state = NewFrameState(); |
| |
| DrmDevice *drm = resource_manager_->GetDrmDevice(display_); |
| |
| DrmConnector *connector = drm->GetConnectorForDisplay(display_); |
| if (!connector) { |
| ALOGE("Could not locate connector for display %d", display_); |
| return -ENODEV; |
| } |
| DrmCrtc *crtc = drm->GetCrtcForDisplay(display_); |
| if (!crtc) { |
| ALOGE("Could not locate crtc for display %d", display_); |
| return -ENODEV; |
| } |
| |
| auto pset = MakeDrmModeAtomicReqUnique(); |
| if (!pset) { |
| ALOGE("Failed to allocate property set"); |
| return -ENOMEM; |
| } |
| |
| int64_t out_fence = -1; |
| if (crtc->out_fence_ptr_property() && |
| !crtc->out_fence_ptr_property().AtomicSet(*pset, (uint64_t)&out_fence)) { |
| return -EINVAL; |
| } |
| |
| if (args.active) { |
| new_frame_state.crtc_active_state = *args.active; |
| if (!crtc->active_property().AtomicSet(*pset, *args.active) || |
| !connector->crtc_id_property().AtomicSet(*pset, crtc->id())) { |
| return -EINVAL; |
| } |
| } |
| |
| if (args.display_mode) { |
| new_frame_state.mode_blob = args.display_mode.value().CreateModeBlob( |
| *resource_manager_->GetDrmDevice(display_)); |
| |
| if (!new_frame_state.mode_blob) { |
| ALOGE("Failed to create mode_blob"); |
| return -EINVAL; |
| } |
| |
| if (!crtc->mode_property().AtomicSet(*pset, *new_frame_state.mode_blob)) { |
| return -EINVAL; |
| } |
| } |
| |
| auto unused_planes = new_frame_state.used_planes; |
| |
| if (args.composition) { |
| new_frame_state.used_framebuffers.clear(); |
| new_frame_state.used_planes.clear(); |
| |
| std::vector<DrmHwcLayer> &layers = args.composition->layers(); |
| std::vector<DrmCompositionPlane> &comp_planes = args.composition |
| ->composition_planes(); |
| |
| for (DrmCompositionPlane &comp_plane : comp_planes) { |
| DrmPlane *plane = comp_plane.plane(); |
| size_t source_layer = comp_plane.source_layer(); |
| |
| if (source_layer >= layers.size()) { |
| ALOGE("Source layer index %zu out of bounds %zu", source_layer, |
| layers.size()); |
| return -EINVAL; |
| } |
| DrmHwcLayer &layer = layers[source_layer]; |
| |
| new_frame_state.used_framebuffers.emplace_back(layer.fb_id_handle); |
| new_frame_state.used_planes.emplace_back(plane); |
| |
| /* Remove from 'unused' list, since plane is re-used */ |
| auto &v = unused_planes; |
| v.erase(std::remove(v.begin(), v.end(), plane), v.end()); |
| |
| if (plane->AtomicSetState(*pset, layer, source_layer, crtc->id()) != 0) { |
| return -EINVAL; |
| } |
| } |
| } |
| |
| if (args.clear_active_composition) { |
| new_frame_state.used_framebuffers.clear(); |
| new_frame_state.used_planes.clear(); |
| } |
| |
| if (args.clear_active_composition || args.composition) { |
| for (auto *plane : unused_planes) { |
| if (plane->AtomicDisablePlane(*pset) != 0) { |
| return -EINVAL; |
| } |
| } |
| } |
| |
| uint32_t flags = DRM_MODE_ATOMIC_ALLOW_MODESET; |
| if (args.test_only) |
| flags |= DRM_MODE_ATOMIC_TEST_ONLY; |
| |
| int err = drmModeAtomicCommit(drm->fd(), pset.get(), flags, drm); |
| if (err) { |
| if (!args.test_only) |
| ALOGE("Failed to commit pset ret=%d\n", err); |
| return err; |
| } |
| |
| if (!args.test_only) { |
| if (args.display_mode) { |
| /* TODO(nobody): we still need this for synthetic vsync, remove after |
| * vsync reworked */ |
| connector->set_active_mode(*args.display_mode); |
| } |
| |
| active_frame_state_ = std::move(new_frame_state); |
| |
| if (crtc->out_fence_ptr_property()) { |
| args.out_fence = UniqueFd((int)out_fence); |
| } |
| } |
| |
| return 0; |
| } |
| |
| auto DrmDisplayCompositor::ExecuteAtomicCommit(AtomicCommitArgs &args) -> int { |
| int err = CommitFrame(args); |
| |
| if (!args.test_only) { |
| if (err) { |
| ALOGE("Composite failed for display %d", display_); |
| // Disable the hw used by the last active composition. This allows us to |
| // signal the release fences from that composition to avoid hanging. |
| AtomicCommitArgs cl_args = {.clear_active_composition = true}; |
| if (CommitFrame(cl_args)) { |
| ALOGE("Failed to clean-up active composition for display %d", display_); |
| } |
| return err; |
| } |
| } |
| |
| return err; |
| } // namespace android |
| |
| auto DrmDisplayCompositor::ActivateDisplayUsingDPMS() -> int { |
| auto *drm = resource_manager_->GetDrmDevice(display_); |
| auto *connector = drm->GetConnectorForDisplay(display_); |
| if (connector == nullptr) { |
| ALOGE("Could not locate connector for display %d", display_); |
| return -ENODEV; |
| } |
| |
| if (connector->dpms_property()) { |
| drmModeConnectorSetProperty(drm->fd(), connector->id(), |
| connector->dpms_property().id(), |
| DRM_MODE_DPMS_ON); |
| } |
| return 0; |
| } |
| |
| } // namespace android |