1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18#define LOG_TAG "hwcomposer-drm" 19 20#include "drm_hwcomposer.h" 21#include "drmresources.h" 22#include "importer.h" 23#include "virtualcompositorworker.h" 24#include "vsyncworker.h" 25 26#include <stdlib.h> 27 28#include <map> 29#include <vector> 30#include <sstream> 31 32#include <errno.h> 33#include <fcntl.h> 34#include <pthread.h> 35#include <sys/param.h> 36#include <sys/resource.h> 37#include <xf86drm.h> 38#include <xf86drmMode.h> 39 40#include <cutils/log.h> 41#include <cutils/properties.h> 42#include <hardware/hardware.h> 43#include <hardware/hwcomposer.h> 44#include <sw_sync.h> 45#include <sync/sync.h> 46#include <utils/Trace.h> 47 48#define UM_PER_INCH 25400 49 50namespace android { 51 52class DummySwSyncTimeline { 53 public: 54 int Init() { 55 int ret = timeline_fd_.Set(sw_sync_timeline_create()); 56 if (ret < 0) 57 return ret; 58 return 0; 59 } 60 61 UniqueFd CreateDummyFence() { 62 int ret = sw_sync_fence_create(timeline_fd_.get(), "dummy fence", 63 timeline_pt_ + 1); 64 if (ret < 0) { 65 ALOGE("Failed to create dummy fence %d", ret); 66 return ret; 67 } 68 69 UniqueFd ret_fd(ret); 70 71 ret = sw_sync_timeline_inc(timeline_fd_.get(), 1); 72 if (ret) { 73 ALOGE("Failed to increment dummy sync timeline %d", ret); 74 return ret; 75 } 76 77 ++timeline_pt_; 78 return ret_fd; 79 } 80 81 private: 82 UniqueFd timeline_fd_; 83 int timeline_pt_ = 0; 84}; 85 86struct CheckedOutputFd { 87 CheckedOutputFd(int *fd, const char *description, 88 DummySwSyncTimeline &timeline) 89 : fd_(fd), description_(description), timeline_(timeline) { 90 } 91 CheckedOutputFd(CheckedOutputFd &&rhs) 92 : description_(rhs.description_), timeline_(rhs.timeline_) { 93 std::swap(fd_, rhs.fd_); 94 } 95 96 CheckedOutputFd &operator=(const CheckedOutputFd &rhs) = delete; 97 98 ~CheckedOutputFd() { 99 if (fd_ == NULL) 100 return; 101 102 if (*fd_ >= 0) 103 return; 104 105 *fd_ = timeline_.CreateDummyFence().Release(); 106 107 if (*fd_ < 0) 108 ALOGE("Failed to fill %s (%p == %d) before destruction", 109 description_.c_str(), fd_, *fd_); 110 } 111 112 private: 113 int *fd_ = NULL; 114 std::string description_; 115 DummySwSyncTimeline &timeline_; 116}; 117 118typedef struct hwc_drm_display { 119 struct hwc_context_t *ctx; 120 int display; 121 122 std::vector<uint32_t> config_ids; 123 124 VSyncWorker vsync_worker; 125} hwc_drm_display_t; 126 127struct hwc_context_t { 128 // map of display:hwc_drm_display_t 129 typedef std::map<int, hwc_drm_display_t> DisplayMap; 130 typedef DisplayMap::iterator DisplayMapIter; 131 132 hwc_context_t() : procs(NULL), importer(NULL) { 133 } 134 135 ~hwc_context_t() { 136 virtual_compositor_worker.Exit(); 137 delete importer; 138 } 139 140 hwc_composer_device_1_t device; 141 hwc_procs_t const *procs; 142 143 DisplayMap displays; 144 DrmResources drm; 145 Importer *importer; 146 const gralloc_module_t *gralloc; 147 DummySwSyncTimeline dummy_timeline; 148 VirtualCompositorWorker virtual_compositor_worker; 149}; 150 151static native_handle_t *dup_buffer_handle(buffer_handle_t handle) { 152 native_handle_t *new_handle = 153 native_handle_create(handle->numFds, handle->numInts); 154 if (new_handle == NULL) 155 return NULL; 156 157 const int *old_data = handle->data; 158 int *new_data = new_handle->data; 159 for (int i = 0; i < handle->numFds; i++) { 160 *new_data = dup(*old_data); 161 old_data++; 162 new_data++; 163 } 164 memcpy(new_data, old_data, sizeof(int) * handle->numInts); 165 166 return new_handle; 167} 168 169static void free_buffer_handle(native_handle_t *handle) { 170 int ret = native_handle_close(handle); 171 if (ret) 172 ALOGE("Failed to close native handle %d", ret); 173 ret = native_handle_delete(handle); 174 if (ret) 175 ALOGE("Failed to delete native handle %d", ret); 176} 177 178OutputFd &OutputFd::operator=(OutputFd &&rhs) { 179 if (fd_ == NULL) { 180 std::swap(fd_, rhs.fd_); 181 } else { 182 if (*fd_ < 0) { 183 ALOGE("Failed to fill OutputFd %p before assignment", fd_); 184 } 185 fd_ = rhs.fd_; 186 rhs.fd_ = NULL; 187 } 188 189 return *this; 190} 191 192const hwc_drm_bo *DrmHwcBuffer::operator->() const { 193 if (importer_ == NULL) { 194 ALOGE("Access of non-existent BO"); 195 exit(1); 196 return NULL; 197 } 198 return &bo_; 199} 200 201void DrmHwcBuffer::Clear() { 202 if (importer_ != NULL) { 203 importer_->ReleaseBuffer(&bo_); 204 importer_ = NULL; 205 } 206} 207 208int DrmHwcBuffer::ImportBuffer(buffer_handle_t handle, Importer *importer) { 209 hwc_drm_bo tmp_bo; 210 211 int ret = importer->ImportBuffer(handle, &tmp_bo); 212 if (ret) 213 return ret; 214 215 if (importer_ != NULL) { 216 importer_->ReleaseBuffer(&bo_); 217 } 218 219 importer_ = importer; 220 221 bo_ = tmp_bo; 222 223 return 0; 224} 225 226int DrmHwcNativeHandle::CopyBufferHandle(buffer_handle_t handle, 227 const gralloc_module_t *gralloc) { 228 native_handle_t *handle_copy = dup_buffer_handle(handle); 229 if (handle_copy == NULL) { 230 ALOGE("Failed to duplicate handle"); 231 return -ENOMEM; 232 } 233 234 int ret = gralloc->registerBuffer(gralloc, handle_copy); 235 if (ret) { 236 ALOGE("Failed to register buffer handle %d", ret); 237 free_buffer_handle(handle_copy); 238 return ret; 239 } 240 241 Clear(); 242 243 gralloc_ = gralloc; 244 handle_ = handle_copy; 245 246 return 0; 247} 248 249DrmHwcNativeHandle::~DrmHwcNativeHandle() { 250 Clear(); 251} 252 253void DrmHwcNativeHandle::Clear() { 254 if (gralloc_ != NULL && handle_ != NULL) { 255 gralloc_->unregisterBuffer(gralloc_, handle_); 256 free_buffer_handle(handle_); 257 gralloc_ = NULL; 258 handle_ = NULL; 259 } 260} 261 262int DrmHwcLayer::InitFromHwcLayer(hwc_layer_1_t *sf_layer, Importer *importer, 263 const gralloc_module_t *gralloc) { 264 sf_handle = sf_layer->handle; 265 alpha = sf_layer->planeAlpha; 266 267 source_crop = DrmHwcRect<float>( 268 sf_layer->sourceCropf.left, sf_layer->sourceCropf.top, 269 sf_layer->sourceCropf.right, sf_layer->sourceCropf.bottom); 270 display_frame = DrmHwcRect<int>( 271 sf_layer->displayFrame.left, sf_layer->displayFrame.top, 272 sf_layer->displayFrame.right, sf_layer->displayFrame.bottom); 273 274 switch (sf_layer->transform) { 275 case 0: 276 transform = DrmHwcTransform::kIdentity; 277 break; 278 case HWC_TRANSFORM_FLIP_H: 279 transform = DrmHwcTransform::kFlipH; 280 break; 281 case HWC_TRANSFORM_FLIP_V: 282 transform = DrmHwcTransform::kFlipV; 283 break; 284 case HWC_TRANSFORM_ROT_90: 285 transform = DrmHwcTransform::kRotate90; 286 break; 287 case HWC_TRANSFORM_ROT_180: 288 transform = DrmHwcTransform::kRotate180; 289 break; 290 case HWC_TRANSFORM_ROT_270: 291 transform = DrmHwcTransform::kRotate270; 292 break; 293 default: 294 ALOGE("Invalid transform in hwc_layer_1_t %d", sf_layer->transform); 295 return -EINVAL; 296 } 297 298 switch (sf_layer->blending) { 299 case HWC_BLENDING_NONE: 300 blending = DrmHwcBlending::kNone; 301 break; 302 case HWC_BLENDING_PREMULT: 303 blending = DrmHwcBlending::kPreMult; 304 break; 305 case HWC_BLENDING_COVERAGE: 306 blending = DrmHwcBlending::kCoverage; 307 break; 308 default: 309 ALOGE("Invalid blending in hwc_layer_1_t %d", sf_layer->blending); 310 return -EINVAL; 311 } 312 313 int ret = buffer.ImportBuffer(sf_layer->handle, importer); 314 if (ret) 315 return ret; 316 317 ret = handle.CopyBufferHandle(sf_layer->handle, gralloc); 318 if (ret) 319 return ret; 320 321 ret = gralloc->perform(gralloc, GRALLOC_MODULE_PERFORM_GET_USAGE, 322 handle.get(), &gralloc_buffer_usage); 323 if (ret) { 324 // TODO(zachr): Once GRALLOC_MODULE_PERFORM_GET_USAGE is implemented, remove 325 // "ret = 0" and enable the error logging code. 326 ret = 0; 327#if 0 328 ALOGE("Failed to get usage for buffer %p (%d)", handle.get(), ret); 329 return ret; 330#endif 331 } 332 333 return 0; 334} 335 336static void hwc_dump(struct hwc_composer_device_1 *dev, char *buff, 337 int buff_len) { 338 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 339 std::ostringstream out; 340 341 ctx->drm.compositor()->Dump(&out); 342 std::string out_str = out.str(); 343 strncpy(buff, out_str.c_str(), 344 std::min((size_t)buff_len, out_str.length() + 1)); 345 buff[buff_len - 1] = '\0'; 346} 347 348static int hwc_prepare(hwc_composer_device_1_t *dev, size_t num_displays, 349 hwc_display_contents_1_t **display_contents) { 350 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 351 352 for (int i = 0; i < (int)num_displays; ++i) { 353 if (!display_contents[i]) 354 continue; 355 356 bool use_framebuffer_target = false; 357 if (i == HWC_DISPLAY_VIRTUAL) { 358 use_framebuffer_target = true; 359 } else { 360 DrmCrtc *crtc = ctx->drm.GetCrtcForDisplay(i); 361 if (!crtc) { 362 ALOGE("No crtc for display %d", i); 363 return -ENODEV; 364 } 365 } 366 367 int num_layers = display_contents[i]->numHwLayers; 368 for (int j = 0; j < num_layers; j++) { 369 hwc_layer_1_t *layer = &display_contents[i]->hwLayers[j]; 370 371 if (!use_framebuffer_target) { 372 if (layer->compositionType == HWC_FRAMEBUFFER) 373 layer->compositionType = HWC_OVERLAY; 374 } else { 375 switch (layer->compositionType) { 376 case HWC_OVERLAY: 377 case HWC_BACKGROUND: 378 case HWC_SIDEBAND: 379 case HWC_CURSOR_OVERLAY: 380 layer->compositionType = HWC_FRAMEBUFFER; 381 break; 382 } 383 } 384 } 385 } 386 387 return 0; 388} 389 390static void hwc_add_layer_to_retire_fence( 391 hwc_layer_1_t *layer, hwc_display_contents_1_t *display_contents) { 392 if (layer->releaseFenceFd < 0) 393 return; 394 395 if (display_contents->retireFenceFd >= 0) { 396 int old_retire_fence = display_contents->retireFenceFd; 397 display_contents->retireFenceFd = 398 sync_merge("dc_retire", old_retire_fence, layer->releaseFenceFd); 399 close(old_retire_fence); 400 } else { 401 display_contents->retireFenceFd = dup(layer->releaseFenceFd); 402 } 403} 404 405static int hwc_set(hwc_composer_device_1_t *dev, size_t num_displays, 406 hwc_display_contents_1_t **sf_display_contents) { 407 ATRACE_CALL(); 408 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 409 int ret = 0; 410 411 std::vector<CheckedOutputFd> checked_output_fences; 412 std::vector<DrmHwcDisplayContents> displays_contents; 413 std::vector<DrmCompositionDisplayLayersMap> layers_map; 414 std::vector<std::vector<size_t>> layers_indices; 415 displays_contents.reserve(num_displays); 416 // layers_map.reserve(num_displays); 417 layers_indices.reserve(num_displays); 418 419 // Phase one does nothing that would cause errors. Only take ownership of FDs. 420 for (size_t i = 0; i < num_displays; ++i) { 421 hwc_display_contents_1_t *dc = sf_display_contents[i]; 422 displays_contents.emplace_back(); 423 DrmHwcDisplayContents &display_contents = displays_contents.back(); 424 layers_indices.emplace_back(); 425 std::vector<size_t> &indices_to_composite = layers_indices.back(); 426 427 if (!sf_display_contents[i]) 428 continue; 429 430 if (i == HWC_DISPLAY_VIRTUAL) { 431 ctx->virtual_compositor_worker.QueueComposite(dc); 432 continue; 433 } 434 435 std::ostringstream display_index_formatter; 436 display_index_formatter << "retire fence for display " << i; 437 std::string display_fence_description(display_index_formatter.str()); 438 checked_output_fences.emplace_back(&dc->retireFenceFd, 439 display_fence_description.c_str(), 440 ctx->dummy_timeline); 441 display_contents.retire_fence = OutputFd(&dc->retireFenceFd); 442 443 size_t num_dc_layers = dc->numHwLayers; 444 int framebuffer_target_index = -1; 445 for (size_t j = 0; j < num_dc_layers; ++j) { 446 hwc_layer_1_t *sf_layer = &dc->hwLayers[j]; 447 448 display_contents.layers.emplace_back(); 449 DrmHwcLayer &layer = display_contents.layers.back(); 450 451 if (sf_layer->flags & HWC_SKIP_LAYER) 452 continue; 453 454 if (sf_layer->compositionType == HWC_OVERLAY) 455 indices_to_composite.push_back(j); 456 if (sf_layer->compositionType == HWC_FRAMEBUFFER_TARGET) 457 framebuffer_target_index = j; 458 459 layer.acquire_fence.Set(sf_layer->acquireFenceFd); 460 sf_layer->acquireFenceFd = -1; 461 462 std::ostringstream layer_fence_formatter; 463 layer_fence_formatter << "release fence for layer " << j << " of display " 464 << i; 465 std::string layer_fence_description(layer_fence_formatter.str()); 466 checked_output_fences.emplace_back(&sf_layer->releaseFenceFd, 467 layer_fence_description.c_str(), 468 ctx->dummy_timeline); 469 layer.release_fence = OutputFd(&sf_layer->releaseFenceFd); 470 } 471 472 if (indices_to_composite.empty() && framebuffer_target_index >= 0) { 473 hwc_layer_1_t *sf_layer = &dc->hwLayers[framebuffer_target_index]; 474 if (!sf_layer->handle || (sf_layer->flags & HWC_SKIP_LAYER)) { 475 ALOGE( 476 "Expected valid layer with HWC_FRAMEBUFFER_TARGET when all " 477 "HWC_OVERLAY layers are skipped."); 478 ret = -EINVAL; 479 } 480 indices_to_composite.push_back(framebuffer_target_index); 481 } 482 } 483 484 if (ret) 485 return ret; 486 487 for (size_t i = 0; i < num_displays; ++i) { 488 hwc_display_contents_1_t *dc = sf_display_contents[i]; 489 DrmHwcDisplayContents &display_contents = displays_contents[i]; 490 if (!sf_display_contents[i] || i == HWC_DISPLAY_VIRTUAL) 491 continue; 492 493 layers_map.emplace_back(); 494 DrmCompositionDisplayLayersMap &map = layers_map.back(); 495 map.display = i; 496 map.geometry_changed = 497 (dc->flags & HWC_GEOMETRY_CHANGED) == HWC_GEOMETRY_CHANGED; 498 std::vector<size_t> &indices_to_composite = layers_indices[i]; 499 for (size_t j : indices_to_composite) { 500 hwc_layer_1_t *sf_layer = &dc->hwLayers[j]; 501 502 DrmHwcLayer &layer = display_contents.layers[j]; 503 504 ret = layer.InitFromHwcLayer(sf_layer, ctx->importer, ctx->gralloc); 505 if (ret) { 506 ALOGE("Failed to init composition from layer %d", ret); 507 return ret; 508 } 509 map.layers.emplace_back(std::move(layer)); 510 } 511 } 512 513 std::unique_ptr<DrmComposition> composition( 514 ctx->drm.compositor()->CreateComposition(ctx->importer)); 515 if (!composition) { 516 ALOGE("Drm composition init failed"); 517 return -EINVAL; 518 } 519 520 ret = composition->SetLayers(layers_map.size(), layers_map.data()); 521 if (ret) { 522 return -EINVAL; 523 } 524 525 ret = ctx->drm.compositor()->QueueComposition(std::move(composition)); 526 if (ret) { 527 return -EINVAL; 528 } 529 530 for (size_t i = 0; i < num_displays; ++i) { 531 hwc_display_contents_1_t *dc = sf_display_contents[i]; 532 if (!dc) 533 continue; 534 535 size_t num_dc_layers = dc->numHwLayers; 536 for (size_t j = 0; j < num_dc_layers; ++j) { 537 hwc_layer_1_t *layer = &dc->hwLayers[j]; 538 if (layer->flags & HWC_SKIP_LAYER) 539 continue; 540 hwc_add_layer_to_retire_fence(layer, dc); 541 } 542 } 543 544 composition.reset(NULL); 545 546 return ret; 547} 548 549static int hwc_event_control(struct hwc_composer_device_1 *dev, int display, 550 int event, int enabled) { 551 if (event != HWC_EVENT_VSYNC || (enabled != 0 && enabled != 1)) 552 return -EINVAL; 553 554 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 555 hwc_drm_display_t *hd = &ctx->displays[display]; 556 return hd->vsync_worker.VSyncControl(enabled); 557} 558 559static int hwc_set_power_mode(struct hwc_composer_device_1 *dev, int display, 560 int mode) { 561 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 562 563 uint64_t dpmsValue = 0; 564 switch (mode) { 565 case HWC_POWER_MODE_OFF: 566 dpmsValue = DRM_MODE_DPMS_OFF; 567 break; 568 569 /* We can't support dozing right now, so go full on */ 570 case HWC_POWER_MODE_DOZE: 571 case HWC_POWER_MODE_DOZE_SUSPEND: 572 case HWC_POWER_MODE_NORMAL: 573 dpmsValue = DRM_MODE_DPMS_ON; 574 break; 575 }; 576 return ctx->drm.SetDpmsMode(display, dpmsValue); 577} 578 579static int hwc_query(struct hwc_composer_device_1 * /* dev */, int what, 580 int *value) { 581 switch (what) { 582 case HWC_BACKGROUND_LAYER_SUPPORTED: 583 *value = 0; /* TODO: We should do this */ 584 break; 585 case HWC_VSYNC_PERIOD: 586 ALOGW("Query for deprecated vsync value, returning 60Hz"); 587 *value = 1000 * 1000 * 1000 / 60; 588 break; 589 case HWC_DISPLAY_TYPES_SUPPORTED: 590 *value = HWC_DISPLAY_PRIMARY_BIT | HWC_DISPLAY_EXTERNAL_BIT | 591 HWC_DISPLAY_VIRTUAL_BIT; 592 break; 593 } 594 return 0; 595} 596 597static void hwc_register_procs(struct hwc_composer_device_1 *dev, 598 hwc_procs_t const *procs) { 599 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 600 601 ctx->procs = procs; 602 603 for (hwc_context_t::DisplayMapIter iter = ctx->displays.begin(); 604 iter != ctx->displays.end(); ++iter) { 605 iter->second.vsync_worker.SetProcs(procs); 606 } 607} 608 609static int hwc_get_display_configs(struct hwc_composer_device_1 *dev, 610 int display, uint32_t *configs, 611 size_t *num_configs) { 612 if (!*num_configs) 613 return 0; 614 615 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 616 hwc_drm_display_t *hd = &ctx->displays[display]; 617 hd->config_ids.clear(); 618 619 DrmConnector *connector = ctx->drm.GetConnectorForDisplay(display); 620 if (!connector) { 621 ALOGE("Failed to get connector for display %d", display); 622 return -ENODEV; 623 } 624 625 int ret = connector->UpdateModes(); 626 if (ret) { 627 ALOGE("Failed to update display modes %d", ret); 628 return ret; 629 } 630 631 for (DrmConnector::ModeIter iter = connector->begin_modes(); 632 iter != connector->end_modes(); ++iter) { 633 size_t idx = hd->config_ids.size(); 634 if (idx == *num_configs) 635 break; 636 hd->config_ids.push_back(iter->id()); 637 configs[idx] = iter->id(); 638 } 639 *num_configs = hd->config_ids.size(); 640 return *num_configs == 0 ? -1 : 0; 641} 642 643static int hwc_get_display_attributes(struct hwc_composer_device_1 *dev, 644 int display, uint32_t config, 645 const uint32_t *attributes, 646 int32_t *values) { 647 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 648 DrmConnector *c = ctx->drm.GetConnectorForDisplay(display); 649 if (!c) { 650 ALOGE("Failed to get DrmConnector for display %d", display); 651 return -ENODEV; 652 } 653 DrmMode mode; 654 for (DrmConnector::ModeIter iter = c->begin_modes(); iter != c->end_modes(); 655 ++iter) { 656 if (iter->id() == config) { 657 mode = *iter; 658 break; 659 } 660 } 661 if (mode.id() == 0) { 662 ALOGE("Failed to find active mode for display %d", display); 663 return -ENOENT; 664 } 665 666 uint32_t mm_width = c->mm_width(); 667 uint32_t mm_height = c->mm_height(); 668 for (int i = 0; attributes[i] != HWC_DISPLAY_NO_ATTRIBUTE; ++i) { 669 switch (attributes[i]) { 670 case HWC_DISPLAY_VSYNC_PERIOD: 671 values[i] = 1000 * 1000 * 1000 / mode.v_refresh(); 672 break; 673 case HWC_DISPLAY_WIDTH: 674 values[i] = mode.h_display(); 675 break; 676 case HWC_DISPLAY_HEIGHT: 677 values[i] = mode.v_display(); 678 break; 679 case HWC_DISPLAY_DPI_X: 680 /* Dots per 1000 inches */ 681 values[i] = mm_width ? (mode.h_display() * UM_PER_INCH) / mm_width : 0; 682 break; 683 case HWC_DISPLAY_DPI_Y: 684 /* Dots per 1000 inches */ 685 values[i] = 686 mm_height ? (mode.v_display() * UM_PER_INCH) / mm_height : 0; 687 break; 688 } 689 } 690 return 0; 691} 692 693static int hwc_get_active_config(struct hwc_composer_device_1 *dev, 694 int display) { 695 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 696 DrmConnector *c = ctx->drm.GetConnectorForDisplay(display); 697 if (!c) { 698 ALOGE("Failed to get DrmConnector for display %d", display); 699 return -ENODEV; 700 } 701 702 DrmMode mode = c->active_mode(); 703 hwc_drm_display_t *hd = &ctx->displays[display]; 704 for (size_t i = 0; i < hd->config_ids.size(); ++i) { 705 if (hd->config_ids[i] == mode.id()) 706 return i; 707 } 708 return -1; 709} 710 711static int hwc_set_active_config(struct hwc_composer_device_1 *dev, int display, 712 int index) { 713 struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common; 714 hwc_drm_display_t *hd = &ctx->displays[display]; 715 if (index >= (int)hd->config_ids.size()) { 716 ALOGE("Invalid config index %d passed in", index); 717 return -EINVAL; 718 } 719 720 DrmConnector *c = ctx->drm.GetConnectorForDisplay(display); 721 if (!c) { 722 ALOGE("Failed to get connector for display %d", display); 723 return -ENODEV; 724 } 725 DrmMode mode; 726 for (DrmConnector::ModeIter iter = c->begin_modes(); iter != c->end_modes(); 727 ++iter) { 728 if (iter->id() == hd->config_ids[index]) { 729 mode = *iter; 730 break; 731 } 732 } 733 if (mode.id() != hd->config_ids[index]) { 734 ALOGE("Could not find active mode for %d/%d", index, hd->config_ids[index]); 735 return -ENOENT; 736 } 737 int ret = ctx->drm.SetDisplayActiveMode(display, mode); 738 if (ret) { 739 ALOGE("Failed to set active config %d", ret); 740 return ret; 741 } 742 return ret; 743} 744 745static int hwc_device_close(struct hw_device_t *dev) { 746 struct hwc_context_t *ctx = (struct hwc_context_t *)dev; 747 delete ctx; 748 return 0; 749} 750 751/* 752 * TODO: This function sets the active config to the first one in the list. This 753 * should be fixed such that it selects the preferred mode for the display, or 754 * some other, saner, method of choosing the config. 755 */ 756static int hwc_set_initial_config(hwc_drm_display_t *hd) { 757 uint32_t config; 758 size_t num_configs = 1; 759 int ret = hwc_get_display_configs(&hd->ctx->device, hd->display, &config, 760 &num_configs); 761 if (ret || !num_configs) 762 return 0; 763 764 ret = hwc_set_active_config(&hd->ctx->device, hd->display, 0); 765 if (ret) { 766 ALOGE("Failed to set active config d=%d ret=%d", hd->display, ret); 767 return ret; 768 } 769 770 return ret; 771} 772 773static int hwc_initialize_display(struct hwc_context_t *ctx, int display) { 774 hwc_drm_display_t *hd = &ctx->displays[display]; 775 hd->ctx = ctx; 776 hd->display = display; 777 778 int ret = hwc_set_initial_config(hd); 779 if (ret) { 780 ALOGE("Failed to set initial config for d=%d ret=%d", display, ret); 781 return ret; 782 } 783 784 ret = hd->vsync_worker.Init(&ctx->drm, display); 785 if (ret) { 786 ALOGE("Failed to create event worker for display %d %d\n", display, ret); 787 return ret; 788 } 789 790 return 0; 791} 792 793static int hwc_enumerate_displays(struct hwc_context_t *ctx) { 794 int ret; 795 for (DrmResources::ConnectorIter c = ctx->drm.begin_connectors(); 796 c != ctx->drm.end_connectors(); ++c) { 797 ret = hwc_initialize_display(ctx, (*c)->display()); 798 if (ret) { 799 ALOGE("Failed to initialize display %d", (*c)->display()); 800 return ret; 801 } 802 } 803 804 ret = ctx->virtual_compositor_worker.Init(); 805 if (ret) { 806 ALOGE("Failed to initialize virtual compositor worker"); 807 return ret; 808 } 809 return 0; 810} 811 812static int hwc_device_open(const struct hw_module_t *module, const char *name, 813 struct hw_device_t **dev) { 814 if (strcmp(name, HWC_HARDWARE_COMPOSER)) { 815 ALOGE("Invalid module name- %s", name); 816 return -EINVAL; 817 } 818 819 struct hwc_context_t *ctx = new hwc_context_t(); 820 if (!ctx) { 821 ALOGE("Failed to allocate hwc context"); 822 return -ENOMEM; 823 } 824 825 int ret = ctx->drm.Init(); 826 if (ret) { 827 ALOGE("Can't initialize Drm object %d", ret); 828 delete ctx; 829 return ret; 830 } 831 832 ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, 833 (const hw_module_t **)&ctx->gralloc); 834 if (ret) { 835 ALOGE("Failed to open gralloc module %d", ret); 836 delete ctx; 837 return ret; 838 } 839 840 ret = ctx->dummy_timeline.Init(); 841 if (ret) { 842 ALOGE("Failed to create dummy sw sync timeline %d", ret); 843 return ret; 844 } 845 846 ctx->importer = Importer::CreateInstance(&ctx->drm); 847 if (!ctx->importer) { 848 ALOGE("Failed to create importer instance"); 849 delete ctx; 850 return ret; 851 } 852 853 ret = hwc_enumerate_displays(ctx); 854 if (ret) { 855 ALOGE("Failed to enumerate displays: %s", strerror(ret)); 856 delete ctx; 857 return ret; 858 } 859 860 ctx->device.common.tag = HARDWARE_DEVICE_TAG; 861 ctx->device.common.version = HWC_DEVICE_API_VERSION_1_4; 862 ctx->device.common.module = const_cast<hw_module_t *>(module); 863 ctx->device.common.close = hwc_device_close; 864 865 ctx->device.dump = hwc_dump; 866 ctx->device.prepare = hwc_prepare; 867 ctx->device.set = hwc_set; 868 ctx->device.eventControl = hwc_event_control; 869 ctx->device.setPowerMode = hwc_set_power_mode; 870 ctx->device.query = hwc_query; 871 ctx->device.registerProcs = hwc_register_procs; 872 ctx->device.getDisplayConfigs = hwc_get_display_configs; 873 ctx->device.getDisplayAttributes = hwc_get_display_attributes; 874 ctx->device.getActiveConfig = hwc_get_active_config; 875 ctx->device.setActiveConfig = hwc_set_active_config; 876 ctx->device.setCursorPositionAsync = NULL; /* TODO: Add cursor */ 877 878 *dev = &ctx->device.common; 879 880 return 0; 881} 882} 883 884static struct hw_module_methods_t hwc_module_methods = { 885 open : android::hwc_device_open 886}; 887 888hwc_module_t HAL_MODULE_INFO_SYM = { 889 common : { 890 tag : HARDWARE_MODULE_TAG, 891 version_major : 1, 892 version_minor : 0, 893 id : HWC_HARDWARE_MODULE_ID, 894 name : "DRM hwcomposer module", 895 author : "The Android Open Source Project", 896 methods : &hwc_module_methods, 897 dso : NULL, 898 reserved : {0}, 899 } 900}; 901