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/*
* 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 {
// 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();
auto *drm = pipe_->device;
auto *connector = pipe_->connector->Get();
auto *crtc = pipe_->crtc->Get();
auto pset = MakeDrmModeAtomicReqUnique();
if (!pset) {
ALOGE("Failed to allocate property set");
return -ENOMEM;
}
int64_t out_fence = -1;
if (crtc->GetOutFencePtrProperty() &&
!crtc->GetOutFencePtrProperty().AtomicSet(*pset, (uint64_t)&out_fence)) {
return -EINVAL;
}
if (args.active) {
new_frame_state.crtc_active_state = *args.active;
if (!crtc->GetActiveProperty().AtomicSet(*pset, *args.active) ||
!connector->GetCrtcIdProperty().AtomicSet(*pset, crtc->GetId())) {
return -EINVAL;
}
}
if (args.display_mode) {
new_frame_state.mode_blob = args.display_mode.value().CreateModeBlob(*drm);
if (!new_frame_state.mode_blob) {
ALOGE("Failed to create mode_blob");
return -EINVAL;
}
if (!crtc->GetModeProperty().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->GetId()) !=
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->GetFd(), 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->SetActiveMode(*args.display_mode);
}
active_frame_state_ = std::move(new_frame_state);
if (crtc->GetOutFencePtrProperty()) {
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 pipeline %s",
pipe_->connector->Get()->GetName().c_str());
// 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 pipeline %s",
pipe_->connector->Get()->GetName().c_str());
}
return err;
}
}
return err;
} // namespace android
auto DrmDisplayCompositor::ActivateDisplayUsingDPMS() -> int {
return drmModeConnectorSetProperty(pipe_->device->GetFd(),
pipe_->connector->Get()->GetId(),
pipe_->connector->Get()
->GetDpmsProperty()
.id(),
DRM_MODE_DPMS_ON);
}
} // namespace android
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