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drm_hwcomposer: drmeventlistener: Set nl_pid to 0
[android-x86/external-drm_hwcomposer.git] / drmhwctwo.cpp
1 /*
2  * Copyright (C) 2016 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 "hwc-drm-two"
19
20 #include "drmdisplaycomposition.h"
21 #include "drmhwcomposer.h"
22 #include "drmhwctwo.h"
23 #include "platform.h"
24 #include "vsyncworker.h"
25
26 #include <inttypes.h>
27 #include <string>
28
29 #include <cutils/log.h>
30 #include <cutils/properties.h>
31 #include <hardware/hardware.h>
32 #include <hardware/hwcomposer2.h>
33
34 namespace android {
35
36 class DrmVsyncCallback : public VsyncCallback {
37  public:
38   DrmVsyncCallback(hwc2_callback_data_t data, hwc2_function_pointer_t hook)
39       : data_(data), hook_(hook) {
40   }
41
42   void Callback(int display, int64_t timestamp) {
43     auto hook = reinterpret_cast<HWC2_PFN_VSYNC>(hook_);
44     hook(data_, display, timestamp);
45   }
46
47  private:
48   hwc2_callback_data_t data_;
49   hwc2_function_pointer_t hook_;
50 };
51
52 DrmHwcTwo::DrmHwcTwo() {
53   common.tag = HARDWARE_DEVICE_TAG;
54   common.version = HWC_DEVICE_API_VERSION_2_0;
55   common.close = HookDevClose;
56   getCapabilities = HookDevGetCapabilities;
57   getFunction = HookDevGetFunction;
58 }
59
60 HWC2::Error DrmHwcTwo::Init() {
61   int ret = drm_.Init();
62   if (ret) {
63     ALOGE("Can't initialize drm object %d", ret);
64     return HWC2::Error::NoResources;
65   }
66
67   importer_.reset(Importer::CreateInstance(&drm_));
68   if (!importer_) {
69     ALOGE("Failed to create importer instance");
70     return HWC2::Error::NoResources;
71   }
72
73   ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
74                       (const hw_module_t **)&gralloc_);
75   if (ret) {
76     ALOGE("Failed to open gralloc module %d", ret);
77     return HWC2::Error::NoResources;
78   }
79
80   displays_.emplace(std::piecewise_construct,
81                     std::forward_as_tuple(HWC_DISPLAY_PRIMARY),
82                     std::forward_as_tuple(&drm_, importer_, gralloc_,
83                                           HWC_DISPLAY_PRIMARY,
84                                           HWC2::DisplayType::Physical));
85
86   DrmCrtc *crtc = drm_.GetCrtcForDisplay(static_cast<int>(HWC_DISPLAY_PRIMARY));
87   if (!crtc) {
88     ALOGE("Failed to get crtc for display %d",
89           static_cast<int>(HWC_DISPLAY_PRIMARY));
90     return HWC2::Error::BadDisplay;
91   }
92
93   std::vector<DrmPlane *> display_planes;
94   for (auto &plane : drm_.planes()) {
95     if (plane->GetCrtcSupported(*crtc))
96       display_planes.push_back(plane.get());
97   }
98   displays_.at(HWC_DISPLAY_PRIMARY).Init(&display_planes);
99   return HWC2::Error::None;
100 }
101
102 template <typename... Args>
103 static inline HWC2::Error unsupported(char const *func, Args... /*args*/) {
104   ALOGV("Unsupported function: %s", func);
105   return HWC2::Error::Unsupported;
106 }
107
108 static inline void supported(char const *func) {
109   ALOGV("Supported function: %s", func);
110 }
111
112 HWC2::Error DrmHwcTwo::CreateVirtualDisplay(uint32_t width, uint32_t height,
113                                             int32_t *format,
114                                             hwc2_display_t *display) {
115   // TODO: Implement virtual display
116   return unsupported(__func__, width, height, format, display);
117 }
118
119 HWC2::Error DrmHwcTwo::DestroyVirtualDisplay(hwc2_display_t display) {
120   // TODO: Implement virtual display
121   return unsupported(__func__, display);
122 }
123
124 void DrmHwcTwo::Dump(uint32_t *size, char *buffer) {
125   // TODO: Implement dump
126   unsupported(__func__, size, buffer);
127 }
128
129 uint32_t DrmHwcTwo::GetMaxVirtualDisplayCount() {
130   // TODO: Implement virtual display
131   unsupported(__func__);
132   return 0;
133 }
134
135 HWC2::Error DrmHwcTwo::RegisterCallback(int32_t descriptor,
136                                         hwc2_callback_data_t data,
137                                         hwc2_function_pointer_t function) {
138   supported(__func__);
139   auto callback = static_cast<HWC2::Callback>(descriptor);
140   callbacks_.emplace(callback, HwcCallback(data, function));
141
142   switch (callback) {
143     case HWC2::Callback::Hotplug: {
144       auto hotplug = reinterpret_cast<HWC2_PFN_HOTPLUG>(function);
145       hotplug(data, HWC_DISPLAY_PRIMARY,
146               static_cast<int32_t>(HWC2::Connection::Connected));
147       break;
148     }
149     case HWC2::Callback::Vsync: {
150       for (std::pair<const hwc2_display_t, DrmHwcTwo::HwcDisplay> &d :
151            displays_)
152         d.second.RegisterVsyncCallback(data, function);
153       break;
154     }
155     default:
156       break;
157   }
158   return HWC2::Error::None;
159 }
160
161 DrmHwcTwo::HwcDisplay::HwcDisplay(DrmResources *drm,
162                                   std::shared_ptr<Importer> importer,
163                                   const gralloc_module_t *gralloc,
164                                   hwc2_display_t handle, HWC2::DisplayType type)
165     : drm_(drm),
166       importer_(importer),
167       gralloc_(gralloc),
168       handle_(handle),
169       type_(type) {
170   supported(__func__);
171 }
172
173 HWC2::Error DrmHwcTwo::HwcDisplay::Init(std::vector<DrmPlane *> *planes) {
174   supported(__func__);
175   planner_ = Planner::CreateInstance(drm_);
176   if (!planner_) {
177     ALOGE("Failed to create planner instance for composition");
178     return HWC2::Error::NoResources;
179   }
180
181   int display = static_cast<int>(handle_);
182   int ret = compositor_.Init(drm_, display);
183   if (ret) {
184     ALOGE("Failed display compositor init for display %d (%d)", display, ret);
185     return HWC2::Error::NoResources;
186   }
187
188   // Split up the given display planes into primary and overlay to properly
189   // interface with the composition
190   char use_overlay_planes_prop[PROPERTY_VALUE_MAX];
191   property_get("hwc.drm.use_overlay_planes", use_overlay_planes_prop, "1");
192   bool use_overlay_planes = atoi(use_overlay_planes_prop);
193   for (auto &plane : *planes) {
194     if (plane->type() == DRM_PLANE_TYPE_PRIMARY)
195       primary_planes_.push_back(plane);
196     else if (use_overlay_planes && (plane)->type() == DRM_PLANE_TYPE_OVERLAY)
197       overlay_planes_.push_back(plane);
198   }
199
200   crtc_ = drm_->GetCrtcForDisplay(display);
201   if (!crtc_) {
202     ALOGE("Failed to get crtc for display %d", display);
203     return HWC2::Error::BadDisplay;
204   }
205
206   connector_ = drm_->GetConnectorForDisplay(display);
207   if (!connector_) {
208     ALOGE("Failed to get connector for display %d", display);
209     return HWC2::Error::BadDisplay;
210   }
211
212   // Fetch the number of modes from the display
213   uint32_t num_configs;
214   HWC2::Error err = GetDisplayConfigs(&num_configs, NULL);
215   if (err != HWC2::Error::None || !num_configs)
216     return err;
217
218   // Grab the first mode, we'll choose this as the active mode
219   // TODO: Should choose the preferred mode here
220   hwc2_config_t default_config;
221   num_configs = 1;
222   err = GetDisplayConfigs(&num_configs, &default_config);
223   if (err != HWC2::Error::None)
224     return err;
225
226   ret = vsync_worker_.Init(drm_, display);
227   if (ret) {
228     ALOGE("Failed to create event worker for d=%d %d\n", display, ret);
229     return HWC2::Error::BadDisplay;
230   }
231
232   return SetActiveConfig(default_config);
233 }
234
235 HWC2::Error DrmHwcTwo::HwcDisplay::RegisterVsyncCallback(
236     hwc2_callback_data_t data, hwc2_function_pointer_t func) {
237   supported(__func__);
238   auto callback = std::make_shared<DrmVsyncCallback>(data, func);
239   vsync_worker_.RegisterCallback(std::move(callback));
240   return HWC2::Error::None;
241 }
242
243 HWC2::Error DrmHwcTwo::HwcDisplay::AcceptDisplayChanges() {
244   supported(__func__);
245   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_)
246     l.second.accept_type_change();
247   return HWC2::Error::None;
248 }
249
250 HWC2::Error DrmHwcTwo::HwcDisplay::CreateLayer(hwc2_layer_t *layer) {
251   supported(__func__);
252   layers_.emplace(static_cast<hwc2_layer_t>(layer_idx_), HwcLayer());
253   *layer = static_cast<hwc2_layer_t>(layer_idx_);
254   ++layer_idx_;
255   return HWC2::Error::None;
256 }
257
258 HWC2::Error DrmHwcTwo::HwcDisplay::DestroyLayer(hwc2_layer_t layer) {
259   supported(__func__);
260   layers_.erase(layer);
261   return HWC2::Error::None;
262 }
263
264 HWC2::Error DrmHwcTwo::HwcDisplay::GetActiveConfig(hwc2_config_t *config) {
265   supported(__func__);
266   DrmMode const &mode = connector_->active_mode();
267   if (mode.id() == 0)
268     return HWC2::Error::BadConfig;
269
270   *config = mode.id();
271   return HWC2::Error::None;
272 }
273
274 HWC2::Error DrmHwcTwo::HwcDisplay::GetChangedCompositionTypes(
275     uint32_t *num_elements, hwc2_layer_t *layers, int32_t *types) {
276   supported(__func__);
277   uint32_t num_changes = 0;
278   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
279     if (l.second.type_changed()) {
280       if (layers && num_changes < *num_elements)
281         layers[num_changes] = l.first;
282       if (types && num_changes < *num_elements)
283         types[num_changes] = static_cast<int32_t>(l.second.validated_type());
284       ++num_changes;
285     }
286   }
287   if (!layers && !types)
288     *num_elements = num_changes;
289   return HWC2::Error::None;
290 }
291
292 HWC2::Error DrmHwcTwo::HwcDisplay::GetClientTargetSupport(uint32_t width,
293                                                           uint32_t height,
294                                                           int32_t /*format*/,
295                                                           int32_t dataspace) {
296   supported(__func__);
297   std::pair<uint32_t, uint32_t> min = drm_->min_resolution();
298   std::pair<uint32_t, uint32_t> max = drm_->max_resolution();
299
300   if (width < min.first || height < min.second)
301     return HWC2::Error::Unsupported;
302
303   if (width > max.first || height > max.second)
304     return HWC2::Error::Unsupported;
305
306   if (dataspace != HAL_DATASPACE_UNKNOWN &&
307       dataspace != HAL_DATASPACE_STANDARD_UNSPECIFIED)
308     return HWC2::Error::Unsupported;
309
310   // TODO: Validate format can be handled by either GL or planes
311   return HWC2::Error::None;
312 }
313
314 HWC2::Error DrmHwcTwo::HwcDisplay::GetColorModes(uint32_t *num_modes,
315                                                  int32_t *modes) {
316   supported(__func__);
317   if (!modes)
318     *num_modes = 1;
319
320   if (modes)
321     *modes = HAL_COLOR_MODE_NATIVE;
322
323   return HWC2::Error::None;
324 }
325
326 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayAttribute(hwc2_config_t config,
327                                                        int32_t attribute_in,
328                                                        int32_t *value) {
329   supported(__func__);
330   auto mode =
331       std::find_if(connector_->modes().begin(), connector_->modes().end(),
332                    [config](DrmMode const &m) { return m.id() == config; });
333   if (mode == connector_->modes().end()) {
334     ALOGE("Could not find active mode for %d", config);
335     return HWC2::Error::BadConfig;
336   }
337
338   static const int32_t kUmPerInch = 25400;
339   uint32_t mm_width = connector_->mm_width();
340   uint32_t mm_height = connector_->mm_height();
341   auto attribute = static_cast<HWC2::Attribute>(attribute_in);
342   switch (attribute) {
343     case HWC2::Attribute::Width:
344       *value = mode->h_display();
345       break;
346     case HWC2::Attribute::Height:
347       *value = mode->v_display();
348       break;
349     case HWC2::Attribute::VsyncPeriod:
350       // in nanoseconds
351       *value = 1000 * 1000 * 1000 / mode->v_refresh();
352       break;
353     case HWC2::Attribute::DpiX:
354       // Dots per 1000 inches
355       *value = mm_width ? (mode->h_display() * kUmPerInch) / mm_width : -1;
356       break;
357     case HWC2::Attribute::DpiY:
358       // Dots per 1000 inches
359       *value = mm_height ? (mode->v_display() * kUmPerInch) / mm_height : -1;
360       break;
361     default:
362       *value = -1;
363       return HWC2::Error::BadConfig;
364   }
365   return HWC2::Error::None;
366 }
367
368 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayConfigs(uint32_t *num_configs,
369                                                      hwc2_config_t *configs) {
370   supported(__func__);
371   // Since this callback is normally invoked twice (once to get the count, and
372   // once to populate configs), we don't really want to read the edid
373   // redundantly. Instead, only update the modes on the first invocation. While
374   // it's possible this will result in stale modes, it'll all come out in the
375   // wash when we try to set the active config later.
376   if (!configs) {
377     int ret = connector_->UpdateModes();
378     if (ret) {
379       ALOGE("Failed to update display modes %d", ret);
380       return HWC2::Error::BadDisplay;
381     }
382   }
383
384   auto num_modes = static_cast<uint32_t>(connector_->modes().size());
385   if (!configs) {
386     *num_configs = num_modes;
387     return HWC2::Error::None;
388   }
389
390   uint32_t idx = 0;
391   for (const DrmMode &mode : connector_->modes()) {
392     if (idx >= *num_configs)
393       break;
394     configs[idx++] = mode.id();
395   }
396   *num_configs = idx;
397   return HWC2::Error::None;
398 }
399
400 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayName(uint32_t *size, char *name) {
401   supported(__func__);
402   std::ostringstream stream;
403   stream << "display-" << connector_->id();
404   std::string string = stream.str();
405   size_t length = string.length();
406   if (!name) {
407     *size = length;
408     return HWC2::Error::None;
409   }
410
411   *size = std::min<uint32_t>(static_cast<uint32_t>(length - 1), *size);
412   strncpy(name, string.c_str(), *size);
413   return HWC2::Error::None;
414 }
415
416 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayRequests(int32_t *display_requests,
417                                                       uint32_t *num_elements,
418                                                       hwc2_layer_t *layers,
419                                                       int32_t *layer_requests) {
420   supported(__func__);
421   // TODO: I think virtual display should request
422   //      HWC2_DISPLAY_REQUEST_WRITE_CLIENT_TARGET_TO_OUTPUT here
423   unsupported(__func__, display_requests, num_elements, layers, layer_requests);
424   *num_elements = 0;
425   return HWC2::Error::None;
426 }
427
428 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayType(int32_t *type) {
429   supported(__func__);
430   *type = static_cast<int32_t>(type_);
431   return HWC2::Error::None;
432 }
433
434 HWC2::Error DrmHwcTwo::HwcDisplay::GetDozeSupport(int32_t *support) {
435   supported(__func__);
436   *support = 0;
437   return HWC2::Error::None;
438 }
439
440 HWC2::Error DrmHwcTwo::HwcDisplay::GetHdrCapabilities(
441     uint32_t *num_types, int32_t */*types*/, float */*max_luminance*/,
442     float */*max_average_luminance*/, float */*min_luminance*/) {
443   supported(__func__);
444   *num_types = 0;
445   return HWC2::Error::None;
446 }
447
448 HWC2::Error DrmHwcTwo::HwcDisplay::GetReleaseFences(uint32_t *num_elements,
449                                                     hwc2_layer_t *layers,
450                                                     int32_t *fences) {
451   supported(__func__);
452   uint32_t num_layers = 0;
453
454   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
455     ++num_layers;
456     if (layers == NULL || fences == NULL) {
457       continue;
458     } else if (num_layers > *num_elements) {
459       ALOGW("Overflow num_elements %d/%d", num_layers, *num_elements);
460       return HWC2::Error::None;
461     }
462
463     layers[num_layers - 1] = l.first;
464     fences[num_layers - 1] = l.second.take_release_fence();
465   }
466   *num_elements = num_layers;
467   return HWC2::Error::None;
468 }
469
470 void DrmHwcTwo::HwcDisplay::AddFenceToRetireFence(int fd) {
471   supported(__func__);
472   if (fd < 0)
473     return;
474
475   if (next_retire_fence_.get() >= 0) {
476     int old_fence = next_retire_fence_.get();
477     next_retire_fence_.Set(sync_merge("dc_retire", old_fence, fd));
478   } else {
479     next_retire_fence_.Set(dup(fd));
480   }
481 }
482
483 HWC2::Error DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) {
484   supported(__func__);
485   std::vector<DrmCompositionDisplayLayersMap> layers_map;
486   layers_map.emplace_back();
487   DrmCompositionDisplayLayersMap &map = layers_map.back();
488
489   map.display = static_cast<int>(handle_);
490   map.geometry_changed = true;  // TODO: Fix this
491
492   // order the layers by z-order
493   bool use_client_layer = false;
494   uint32_t client_z_order = 0;
495   std::map<uint32_t, DrmHwcTwo::HwcLayer *> z_map;
496   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
497     switch (l.second.validated_type()) {
498       case HWC2::Composition::Device:
499         z_map.emplace(std::make_pair(l.second.z_order(), &l.second));
500         break;
501       case HWC2::Composition::Client:
502         // Place it at the z_order of the highest client layer
503         use_client_layer = true;
504         client_z_order = std::max(client_z_order, l.second.z_order());
505         break;
506       default:
507         continue;
508     }
509   }
510   if (use_client_layer)
511     z_map.emplace(std::make_pair(client_z_order, &client_layer_));
512
513   // now that they're ordered by z, add them to the composition
514   for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map) {
515     DrmHwcLayer layer;
516     l.second->PopulateDrmLayer(&layer);
517     int ret = layer.ImportBuffer(importer_.get(), gralloc_);
518     if (ret) {
519       ALOGE("Failed to import layer, ret=%d", ret);
520       return HWC2::Error::NoResources;
521     }
522     map.layers.emplace_back(std::move(layer));
523   }
524   if (map.layers.empty()) {
525     *retire_fence = -1;
526     return HWC2::Error::None;
527   }
528
529   std::unique_ptr<DrmDisplayComposition> composition =
530       compositor_.CreateComposition();
531   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
532
533   // TODO: Don't always assume geometry changed
534   int ret = composition->SetLayers(map.layers.data(), map.layers.size(), true);
535   if (ret) {
536     ALOGE("Failed to set layers in the composition ret=%d", ret);
537     return HWC2::Error::BadLayer;
538   }
539
540   std::vector<DrmPlane *> primary_planes(primary_planes_);
541   std::vector<DrmPlane *> overlay_planes(overlay_planes_);
542   ret = composition->Plan(compositor_.squash_state(), &primary_planes,
543                          &overlay_planes);
544   if (ret) {
545     ALOGE("Failed to plan the composition ret=%d", ret);
546     return HWC2::Error::BadConfig;
547   }
548
549   // Disable the planes we're not using
550   for (auto i = primary_planes.begin(); i != primary_planes.end();) {
551     composition->AddPlaneDisable(*i);
552     i = primary_planes.erase(i);
553   }
554   for (auto i = overlay_planes.begin(); i != overlay_planes.end();) {
555     composition->AddPlaneDisable(*i);
556     i = overlay_planes.erase(i);
557   }
558
559   AddFenceToRetireFence(composition->take_out_fence());
560
561   ret = compositor_.ApplyComposition(std::move(composition));
562   if (ret) {
563     ALOGE("Failed to apply the frame composition ret=%d", ret);
564     return HWC2::Error::BadParameter;
565   }
566
567   // The retire fence returned here is for the last frame, so return it and
568   // promote the next retire fence
569   *retire_fence = retire_fence_.Release();
570   retire_fence_ = std::move(next_retire_fence_);
571
572   ++frame_no_;
573   return HWC2::Error::None;
574 }
575
576 HWC2::Error DrmHwcTwo::HwcDisplay::SetActiveConfig(hwc2_config_t config) {
577   supported(__func__);
578   auto mode =
579       std::find_if(connector_->modes().begin(), connector_->modes().end(),
580                    [config](DrmMode const &m) { return m.id() == config; });
581   if (mode == connector_->modes().end()) {
582     ALOGE("Could not find active mode for %d", config);
583     return HWC2::Error::BadConfig;
584   }
585
586   std::unique_ptr<DrmDisplayComposition> composition =
587       compositor_.CreateComposition();
588   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
589   int ret = composition->SetDisplayMode(*mode);
590   ret = compositor_.ApplyComposition(std::move(composition));
591   if (ret) {
592     ALOGE("Failed to queue dpms composition on %d", ret);
593     return HWC2::Error::BadConfig;
594   }
595   if (connector_->active_mode().id() == 0)
596     connector_->set_active_mode(*mode);
597
598   // Setup the client layer's dimensions
599   hwc_rect_t display_frame = {.left = 0,
600                               .top = 0,
601                               .right = static_cast<int>(mode->h_display()),
602                               .bottom = static_cast<int>(mode->v_display())};
603   client_layer_.SetLayerDisplayFrame(display_frame);
604   hwc_frect_t source_crop = {.left = 0.0f,
605                              .top = 0.0f,
606                              .right = mode->h_display() + 0.0f,
607                              .bottom = mode->v_display() + 0.0f};
608   client_layer_.SetLayerSourceCrop(source_crop);
609
610   return HWC2::Error::None;
611 }
612
613 HWC2::Error DrmHwcTwo::HwcDisplay::SetClientTarget(buffer_handle_t target,
614                                                    int32_t acquire_fence,
615                                                    int32_t dataspace,
616                                                    hwc_region_t /*damage*/) {
617   supported(__func__);
618   UniqueFd uf(acquire_fence);
619
620   client_layer_.set_buffer(target);
621   client_layer_.set_acquire_fence(uf.get());
622   client_layer_.SetLayerDataspace(dataspace);
623   return HWC2::Error::None;
624 }
625
626 HWC2::Error DrmHwcTwo::HwcDisplay::SetColorMode(int32_t mode) {
627   supported(__func__);
628
629   if (mode != HAL_COLOR_MODE_NATIVE)
630     return HWC2::Error::Unsupported;
631
632   color_mode_ = mode;
633   return HWC2::Error::None;
634 }
635
636 HWC2::Error DrmHwcTwo::HwcDisplay::SetColorTransform(const float *matrix,
637                                                      int32_t hint) {
638   supported(__func__);
639   // TODO: Force client composition if we get this
640   return unsupported(__func__, matrix, hint);
641 }
642
643 HWC2::Error DrmHwcTwo::HwcDisplay::SetOutputBuffer(buffer_handle_t buffer,
644                                                    int32_t release_fence) {
645   supported(__func__);
646   // TODO: Need virtual display support
647   return unsupported(__func__, buffer, release_fence);
648 }
649
650 HWC2::Error DrmHwcTwo::HwcDisplay::SetPowerMode(int32_t mode_in) {
651   supported(__func__);
652   uint64_t dpms_value = 0;
653   auto mode = static_cast<HWC2::PowerMode>(mode_in);
654   switch (mode) {
655     case HWC2::PowerMode::Off:
656       dpms_value = DRM_MODE_DPMS_OFF;
657       break;
658     case HWC2::PowerMode::On:
659       dpms_value = DRM_MODE_DPMS_ON;
660       break;
661     default:
662       ALOGI("Power mode %d is unsupported\n", mode);
663       return HWC2::Error::Unsupported;
664   };
665
666   std::unique_ptr<DrmDisplayComposition> composition =
667       compositor_.CreateComposition();
668   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
669   composition->SetDpmsMode(dpms_value);
670   int ret = compositor_.ApplyComposition(std::move(composition));
671   if (ret) {
672     ALOGE("Failed to apply the dpms composition ret=%d", ret);
673     return HWC2::Error::BadParameter;
674   }
675   return HWC2::Error::None;
676 }
677
678 HWC2::Error DrmHwcTwo::HwcDisplay::SetVsyncEnabled(int32_t enabled) {
679   supported(__func__);
680   vsync_worker_.VSyncControl(enabled);
681   return HWC2::Error::None;
682 }
683
684 HWC2::Error DrmHwcTwo::HwcDisplay::ValidateDisplay(uint32_t *num_types,
685                                                    uint32_t *num_requests) {
686   supported(__func__);
687   *num_types = 0;
688   *num_requests = 0;
689   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
690     DrmHwcTwo::HwcLayer &layer = l.second;
691     switch (layer.sf_type()) {
692       case HWC2::Composition::SolidColor:
693       case HWC2::Composition::Cursor:
694       case HWC2::Composition::Sideband:
695         layer.set_validated_type(HWC2::Composition::Client);
696         ++*num_types;
697         break;
698       default:
699         layer.set_validated_type(layer.sf_type());
700         break;
701     }
702   }
703   return *num_types ? HWC2::Error::HasChanges : HWC2::Error::None;
704 }
705
706 HWC2::Error DrmHwcTwo::HwcLayer::SetCursorPosition(int32_t x, int32_t y) {
707   supported(__func__);
708   cursor_x_ = x;
709   cursor_y_ = y;
710   return HWC2::Error::None;
711 }
712
713 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerBlendMode(int32_t mode) {
714   supported(__func__);
715   blending_ = static_cast<HWC2::BlendMode>(mode);
716   return HWC2::Error::None;
717 }
718
719 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerBuffer(buffer_handle_t buffer,
720                                                 int32_t acquire_fence) {
721   supported(__func__);
722   UniqueFd uf(acquire_fence);
723
724   // The buffer and acquire_fence are handled elsewhere
725   if (sf_type_ == HWC2::Composition::Client ||
726       sf_type_ == HWC2::Composition::Sideband ||
727       sf_type_ == HWC2::Composition::SolidColor)
728     return HWC2::Error::None;
729
730   set_buffer(buffer);
731   set_acquire_fence(uf.get());
732   return HWC2::Error::None;
733 }
734
735 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerColor(hwc_color_t color) {
736   // TODO: Punt to client composition here?
737   return unsupported(__func__, color);
738 }
739
740 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerCompositionType(int32_t type) {
741   sf_type_ = static_cast<HWC2::Composition>(type);
742   return HWC2::Error::None;
743 }
744
745 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerDataspace(int32_t dataspace) {
746   supported(__func__);
747   dataspace_ = static_cast<android_dataspace_t>(dataspace);
748   return HWC2::Error::None;
749 }
750
751 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerDisplayFrame(hwc_rect_t frame) {
752   supported(__func__);
753   display_frame_ = frame;
754   return HWC2::Error::None;
755 }
756
757 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerPlaneAlpha(float alpha) {
758   supported(__func__);
759   alpha_ = alpha;
760   return HWC2::Error::None;
761 }
762
763 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSidebandStream(
764     const native_handle_t *stream) {
765   supported(__func__);
766   // TODO: We don't support sideband
767   return unsupported(__func__, stream);
768 }
769
770 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSourceCrop(hwc_frect_t crop) {
771   supported(__func__);
772   source_crop_ = crop;
773   return HWC2::Error::None;
774 }
775
776 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSurfaceDamage(hwc_region_t damage) {
777   supported(__func__);
778   // TODO: We don't use surface damage, marking as unsupported
779   unsupported(__func__, damage);
780   return HWC2::Error::None;
781 }
782
783 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerTransform(int32_t transform) {
784   supported(__func__);
785   transform_ = static_cast<HWC2::Transform>(transform);
786   return HWC2::Error::None;
787 }
788
789 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerVisibleRegion(hwc_region_t visible) {
790   supported(__func__);
791   // TODO: We don't use this information, marking as unsupported
792   unsupported(__func__, visible);
793   return HWC2::Error::None;
794 }
795
796 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerZOrder(uint32_t order) {
797   supported(__func__);
798   z_order_ = order;
799   return HWC2::Error::None;
800 }
801
802 void DrmHwcTwo::HwcLayer::PopulateDrmLayer(DrmHwcLayer *layer) {
803   supported(__func__);
804   switch (blending_) {
805     case HWC2::BlendMode::None:
806       layer->blending = DrmHwcBlending::kNone;
807       break;
808     case HWC2::BlendMode::Premultiplied:
809       layer->blending = DrmHwcBlending::kPreMult;
810       break;
811     case HWC2::BlendMode::Coverage:
812       layer->blending = DrmHwcBlending::kCoverage;
813       break;
814     default:
815       ALOGE("Unknown blending mode b=%d", blending_);
816       layer->blending = DrmHwcBlending::kNone;
817       break;
818   }
819
820   OutputFd release_fence = release_fence_output();
821
822   layer->sf_handle = buffer_;
823   layer->acquire_fence = acquire_fence_.Release();
824   layer->release_fence = std::move(release_fence);
825   layer->SetDisplayFrame(display_frame_);
826   layer->alpha = static_cast<uint8_t>(255.0f * alpha_ + 0.5f);
827   layer->SetSourceCrop(source_crop_);
828   layer->SetTransform(static_cast<int32_t>(transform_));
829 }
830
831 // static
832 int DrmHwcTwo::HookDevClose(hw_device_t * /*dev*/) {
833   unsupported(__func__);
834   return 0;
835 }
836
837 // static
838 void DrmHwcTwo::HookDevGetCapabilities(hwc2_device_t * /*dev*/,
839                                        uint32_t *out_count,
840                                        int32_t * /*out_capabilities*/) {
841   supported(__func__);
842   *out_count = 0;
843 }
844
845 // static
846 hwc2_function_pointer_t DrmHwcTwo::HookDevGetFunction(
847     struct hwc2_device * /*dev*/, int32_t descriptor) {
848   supported(__func__);
849   auto func = static_cast<HWC2::FunctionDescriptor>(descriptor);
850   switch (func) {
851     // Device functions
852     case HWC2::FunctionDescriptor::CreateVirtualDisplay:
853       return ToHook<HWC2_PFN_CREATE_VIRTUAL_DISPLAY>(
854           DeviceHook<int32_t, decltype(&DrmHwcTwo::CreateVirtualDisplay),
855                      &DrmHwcTwo::CreateVirtualDisplay, uint32_t, uint32_t,
856                      int32_t*, hwc2_display_t *>);
857     case HWC2::FunctionDescriptor::DestroyVirtualDisplay:
858       return ToHook<HWC2_PFN_DESTROY_VIRTUAL_DISPLAY>(
859           DeviceHook<int32_t, decltype(&DrmHwcTwo::DestroyVirtualDisplay),
860                      &DrmHwcTwo::DestroyVirtualDisplay, hwc2_display_t>);
861     case HWC2::FunctionDescriptor::Dump:
862       return ToHook<HWC2_PFN_DUMP>(
863           DeviceHook<void, decltype(&DrmHwcTwo::Dump), &DrmHwcTwo::Dump,
864                      uint32_t *, char *>);
865     case HWC2::FunctionDescriptor::GetMaxVirtualDisplayCount:
866       return ToHook<HWC2_PFN_GET_MAX_VIRTUAL_DISPLAY_COUNT>(
867           DeviceHook<uint32_t, decltype(&DrmHwcTwo::GetMaxVirtualDisplayCount),
868                      &DrmHwcTwo::GetMaxVirtualDisplayCount>);
869     case HWC2::FunctionDescriptor::RegisterCallback:
870       return ToHook<HWC2_PFN_REGISTER_CALLBACK>(
871           DeviceHook<int32_t, decltype(&DrmHwcTwo::RegisterCallback),
872                      &DrmHwcTwo::RegisterCallback, int32_t,
873                      hwc2_callback_data_t, hwc2_function_pointer_t>);
874
875     // Display functions
876     case HWC2::FunctionDescriptor::AcceptDisplayChanges:
877       return ToHook<HWC2_PFN_ACCEPT_DISPLAY_CHANGES>(
878           DisplayHook<decltype(&HwcDisplay::AcceptDisplayChanges),
879                       &HwcDisplay::AcceptDisplayChanges>);
880     case HWC2::FunctionDescriptor::CreateLayer:
881       return ToHook<HWC2_PFN_CREATE_LAYER>(
882           DisplayHook<decltype(&HwcDisplay::CreateLayer),
883                       &HwcDisplay::CreateLayer, hwc2_layer_t *>);
884     case HWC2::FunctionDescriptor::DestroyLayer:
885       return ToHook<HWC2_PFN_DESTROY_LAYER>(
886           DisplayHook<decltype(&HwcDisplay::DestroyLayer),
887                       &HwcDisplay::DestroyLayer, hwc2_layer_t>);
888     case HWC2::FunctionDescriptor::GetActiveConfig:
889       return ToHook<HWC2_PFN_GET_ACTIVE_CONFIG>(
890           DisplayHook<decltype(&HwcDisplay::GetActiveConfig),
891                       &HwcDisplay::GetActiveConfig, hwc2_config_t *>);
892     case HWC2::FunctionDescriptor::GetChangedCompositionTypes:
893       return ToHook<HWC2_PFN_GET_CHANGED_COMPOSITION_TYPES>(
894           DisplayHook<decltype(&HwcDisplay::GetChangedCompositionTypes),
895                       &HwcDisplay::GetChangedCompositionTypes, uint32_t *,
896                       hwc2_layer_t *, int32_t *>);
897     case HWC2::FunctionDescriptor::GetClientTargetSupport:
898       return ToHook<HWC2_PFN_GET_CLIENT_TARGET_SUPPORT>(
899           DisplayHook<decltype(&HwcDisplay::GetClientTargetSupport),
900                       &HwcDisplay::GetClientTargetSupport, uint32_t, uint32_t,
901                       int32_t, int32_t>);
902     case HWC2::FunctionDescriptor::GetColorModes:
903       return ToHook<HWC2_PFN_GET_COLOR_MODES>(
904           DisplayHook<decltype(&HwcDisplay::GetColorModes),
905                       &HwcDisplay::GetColorModes, uint32_t *, int32_t *>);
906     case HWC2::FunctionDescriptor::GetDisplayAttribute:
907       return ToHook<HWC2_PFN_GET_DISPLAY_ATTRIBUTE>(DisplayHook<
908           decltype(&HwcDisplay::GetDisplayAttribute),
909           &HwcDisplay::GetDisplayAttribute, hwc2_config_t, int32_t, int32_t *>);
910     case HWC2::FunctionDescriptor::GetDisplayConfigs:
911       return ToHook<HWC2_PFN_GET_DISPLAY_CONFIGS>(DisplayHook<
912           decltype(&HwcDisplay::GetDisplayConfigs),
913           &HwcDisplay::GetDisplayConfigs, uint32_t *, hwc2_config_t *>);
914     case HWC2::FunctionDescriptor::GetDisplayName:
915       return ToHook<HWC2_PFN_GET_DISPLAY_NAME>(
916           DisplayHook<decltype(&HwcDisplay::GetDisplayName),
917                       &HwcDisplay::GetDisplayName, uint32_t *, char *>);
918     case HWC2::FunctionDescriptor::GetDisplayRequests:
919       return ToHook<HWC2_PFN_GET_DISPLAY_REQUESTS>(
920           DisplayHook<decltype(&HwcDisplay::GetDisplayRequests),
921                       &HwcDisplay::GetDisplayRequests, int32_t *, uint32_t *,
922                       hwc2_layer_t *, int32_t *>);
923     case HWC2::FunctionDescriptor::GetDisplayType:
924       return ToHook<HWC2_PFN_GET_DISPLAY_TYPE>(
925           DisplayHook<decltype(&HwcDisplay::GetDisplayType),
926                       &HwcDisplay::GetDisplayType, int32_t *>);
927     case HWC2::FunctionDescriptor::GetDozeSupport:
928       return ToHook<HWC2_PFN_GET_DOZE_SUPPORT>(
929           DisplayHook<decltype(&HwcDisplay::GetDozeSupport),
930                       &HwcDisplay::GetDozeSupport, int32_t *>);
931     case HWC2::FunctionDescriptor::GetHdrCapabilities:
932       return ToHook<HWC2_PFN_GET_HDR_CAPABILITIES>(
933           DisplayHook<decltype(&HwcDisplay::GetHdrCapabilities),
934                       &HwcDisplay::GetHdrCapabilities, uint32_t *, int32_t *,
935                       float *, float *, float *>);
936     case HWC2::FunctionDescriptor::GetReleaseFences:
937       return ToHook<HWC2_PFN_GET_RELEASE_FENCES>(
938           DisplayHook<decltype(&HwcDisplay::GetReleaseFences),
939                       &HwcDisplay::GetReleaseFences, uint32_t *, hwc2_layer_t *,
940                       int32_t *>);
941     case HWC2::FunctionDescriptor::PresentDisplay:
942       return ToHook<HWC2_PFN_PRESENT_DISPLAY>(
943           DisplayHook<decltype(&HwcDisplay::PresentDisplay),
944                       &HwcDisplay::PresentDisplay, int32_t *>);
945     case HWC2::FunctionDescriptor::SetActiveConfig:
946       return ToHook<HWC2_PFN_SET_ACTIVE_CONFIG>(
947           DisplayHook<decltype(&HwcDisplay::SetActiveConfig),
948                       &HwcDisplay::SetActiveConfig, hwc2_config_t>);
949     case HWC2::FunctionDescriptor::SetClientTarget:
950       return ToHook<HWC2_PFN_SET_CLIENT_TARGET>(DisplayHook<
951           decltype(&HwcDisplay::SetClientTarget), &HwcDisplay::SetClientTarget,
952           buffer_handle_t, int32_t, int32_t, hwc_region_t>);
953     case HWC2::FunctionDescriptor::SetColorMode:
954       return ToHook<HWC2_PFN_SET_COLOR_MODE>(
955           DisplayHook<decltype(&HwcDisplay::SetColorMode),
956                       &HwcDisplay::SetColorMode, int32_t>);
957     case HWC2::FunctionDescriptor::SetColorTransform:
958       return ToHook<HWC2_PFN_SET_COLOR_TRANSFORM>(
959           DisplayHook<decltype(&HwcDisplay::SetColorTransform),
960                       &HwcDisplay::SetColorTransform, const float *, int32_t>);
961     case HWC2::FunctionDescriptor::SetOutputBuffer:
962       return ToHook<HWC2_PFN_SET_OUTPUT_BUFFER>(
963           DisplayHook<decltype(&HwcDisplay::SetOutputBuffer),
964                       &HwcDisplay::SetOutputBuffer, buffer_handle_t, int32_t>);
965     case HWC2::FunctionDescriptor::SetPowerMode:
966       return ToHook<HWC2_PFN_SET_POWER_MODE>(
967           DisplayHook<decltype(&HwcDisplay::SetPowerMode),
968                       &HwcDisplay::SetPowerMode, int32_t>);
969     case HWC2::FunctionDescriptor::SetVsyncEnabled:
970       return ToHook<HWC2_PFN_SET_VSYNC_ENABLED>(
971           DisplayHook<decltype(&HwcDisplay::SetVsyncEnabled),
972                       &HwcDisplay::SetVsyncEnabled, int32_t>);
973     case HWC2::FunctionDescriptor::ValidateDisplay:
974       return ToHook<HWC2_PFN_VALIDATE_DISPLAY>(
975           DisplayHook<decltype(&HwcDisplay::ValidateDisplay),
976                       &HwcDisplay::ValidateDisplay, uint32_t *, uint32_t *>);
977
978     // Layer functions
979     case HWC2::FunctionDescriptor::SetCursorPosition:
980       return ToHook<HWC2_PFN_SET_CURSOR_POSITION>(
981           LayerHook<decltype(&HwcLayer::SetCursorPosition),
982                     &HwcLayer::SetCursorPosition, int32_t, int32_t>);
983     case HWC2::FunctionDescriptor::SetLayerBlendMode:
984       return ToHook<HWC2_PFN_SET_LAYER_BLEND_MODE>(
985           LayerHook<decltype(&HwcLayer::SetLayerBlendMode),
986                     &HwcLayer::SetLayerBlendMode, int32_t>);
987     case HWC2::FunctionDescriptor::SetLayerBuffer:
988       return ToHook<HWC2_PFN_SET_LAYER_BUFFER>(
989           LayerHook<decltype(&HwcLayer::SetLayerBuffer),
990                     &HwcLayer::SetLayerBuffer, buffer_handle_t, int32_t>);
991     case HWC2::FunctionDescriptor::SetLayerColor:
992       return ToHook<HWC2_PFN_SET_LAYER_COLOR>(
993           LayerHook<decltype(&HwcLayer::SetLayerColor),
994                     &HwcLayer::SetLayerColor, hwc_color_t>);
995     case HWC2::FunctionDescriptor::SetLayerCompositionType:
996       return ToHook<HWC2_PFN_SET_LAYER_COMPOSITION_TYPE>(
997           LayerHook<decltype(&HwcLayer::SetLayerCompositionType),
998                     &HwcLayer::SetLayerCompositionType, int32_t>);
999     case HWC2::FunctionDescriptor::SetLayerDataspace:
1000       return ToHook<HWC2_PFN_SET_LAYER_DATASPACE>(
1001           LayerHook<decltype(&HwcLayer::SetLayerDataspace),
1002                     &HwcLayer::SetLayerDataspace, int32_t>);
1003     case HWC2::FunctionDescriptor::SetLayerDisplayFrame:
1004       return ToHook<HWC2_PFN_SET_LAYER_DISPLAY_FRAME>(
1005           LayerHook<decltype(&HwcLayer::SetLayerDisplayFrame),
1006                     &HwcLayer::SetLayerDisplayFrame, hwc_rect_t>);
1007     case HWC2::FunctionDescriptor::SetLayerPlaneAlpha:
1008       return ToHook<HWC2_PFN_SET_LAYER_PLANE_ALPHA>(
1009           LayerHook<decltype(&HwcLayer::SetLayerPlaneAlpha),
1010                     &HwcLayer::SetLayerPlaneAlpha, float>);
1011     case HWC2::FunctionDescriptor::SetLayerSidebandStream:
1012       return ToHook<HWC2_PFN_SET_LAYER_SIDEBAND_STREAM>(LayerHook<
1013           decltype(&HwcLayer::SetLayerSidebandStream),
1014           &HwcLayer::SetLayerSidebandStream, const native_handle_t *>);
1015     case HWC2::FunctionDescriptor::SetLayerSourceCrop:
1016       return ToHook<HWC2_PFN_SET_LAYER_SOURCE_CROP>(
1017           LayerHook<decltype(&HwcLayer::SetLayerSourceCrop),
1018                     &HwcLayer::SetLayerSourceCrop, hwc_frect_t>);
1019     case HWC2::FunctionDescriptor::SetLayerSurfaceDamage:
1020       return ToHook<HWC2_PFN_SET_LAYER_SURFACE_DAMAGE>(
1021           LayerHook<decltype(&HwcLayer::SetLayerSurfaceDamage),
1022                     &HwcLayer::SetLayerSurfaceDamage, hwc_region_t>);
1023     case HWC2::FunctionDescriptor::SetLayerTransform:
1024       return ToHook<HWC2_PFN_SET_LAYER_TRANSFORM>(
1025           LayerHook<decltype(&HwcLayer::SetLayerTransform),
1026                     &HwcLayer::SetLayerTransform, int32_t>);
1027     case HWC2::FunctionDescriptor::SetLayerVisibleRegion:
1028       return ToHook<HWC2_PFN_SET_LAYER_VISIBLE_REGION>(
1029           LayerHook<decltype(&HwcLayer::SetLayerVisibleRegion),
1030                     &HwcLayer::SetLayerVisibleRegion, hwc_region_t>);
1031     case HWC2::FunctionDescriptor::SetLayerZOrder:
1032       return ToHook<HWC2_PFN_SET_LAYER_Z_ORDER>(
1033           LayerHook<decltype(&HwcLayer::SetLayerZOrder),
1034                     &HwcLayer::SetLayerZOrder, uint32_t>);
1035     case HWC2::FunctionDescriptor::Invalid:
1036     default:
1037       return NULL;
1038   }
1039 }
1040
1041 // static
1042 int DrmHwcTwo::HookDevOpen(const struct hw_module_t *module, const char *name,
1043                            struct hw_device_t **dev) {
1044   supported(__func__);
1045   if (strcmp(name, HWC_HARDWARE_COMPOSER)) {
1046     ALOGE("Invalid module name- %s", name);
1047     return -EINVAL;
1048   }
1049
1050   std::unique_ptr<DrmHwcTwo> ctx(new DrmHwcTwo());
1051   if (!ctx) {
1052     ALOGE("Failed to allocate DrmHwcTwo");
1053     return -ENOMEM;
1054   }
1055
1056   HWC2::Error err = ctx->Init();
1057   if (err != HWC2::Error::None) {
1058     ALOGE("Failed to initialize DrmHwcTwo err=%d\n", err);
1059     return -EINVAL;
1060   }
1061
1062   ctx->common.module = const_cast<hw_module_t *>(module);
1063   *dev = &ctx->common;
1064   ctx.release();
1065   return 0;
1066 }
1067 }
1068
1069 static struct hw_module_methods_t hwc2_module_methods = {
1070     .open = android::DrmHwcTwo::HookDevOpen,
1071 };
1072
1073 hw_module_t HAL_MODULE_INFO_SYM = {
1074     .tag = HARDWARE_MODULE_TAG,
1075     .module_api_version = HARDWARE_MODULE_API_VERSION(2, 0),
1076     .id = HWC_HARDWARE_MODULE_ID,
1077     .name = "DrmHwcTwo module",
1078     .author = "The Android Open Source Project",
1079     .methods = &hwc2_module_methods,
1080     .dso = NULL,
1081     .reserved = {0},
1082 };