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 LOG_TAG "hwc-drm-composition"
18
19 #include "drmcomposition.h"
20 #include "drmcrtc.h"
21 #include "drmplane.h"
22 #include "drmresources.h"
23 #include "platform.h"
24
25 #include <stdlib.h>
26
27 #include <cutils/log.h>
28 #include <cutils/properties.h>
29 #include <sw_sync.h>
30 #include <sync/sync.h>
31
32 namespace android {
33
DrmComposition(DrmResources * drm,Importer * importer,Planner * planner)34 DrmComposition::DrmComposition(DrmResources *drm, Importer *importer,
35 Planner *planner)
36 : drm_(drm), importer_(importer), planner_(planner) {
37 char use_overlay_planes_prop[PROPERTY_VALUE_MAX];
38 property_get("hwc.drm.use_overlay_planes", use_overlay_planes_prop, "1");
39 bool use_overlay_planes = atoi(use_overlay_planes_prop);
40
41 for (auto &plane : drm->planes()) {
42 if (plane->type() == DRM_PLANE_TYPE_PRIMARY)
43 primary_planes_.push_back(plane.get());
44 else if (use_overlay_planes && plane->type() == DRM_PLANE_TYPE_OVERLAY)
45 overlay_planes_.push_back(plane.get());
46 }
47 }
48
Init(uint64_t frame_no)49 int DrmComposition::Init(uint64_t frame_no) {
50 for (auto &conn : drm_->connectors()) {
51 int display = conn->display();
52 composition_map_[display].reset(new DrmDisplayComposition());
53 if (!composition_map_[display]) {
54 ALOGE("Failed to allocate new display composition\n");
55 return -ENOMEM;
56 }
57
58 // If the display hasn't been modeset yet, this will be NULL
59 DrmCrtc *crtc = drm_->GetCrtcForDisplay(display);
60
61 int ret = composition_map_[display]->Init(drm_, crtc, importer_, planner_,
62 frame_no);
63 if (ret) {
64 ALOGE("Failed to init display composition for %d", display);
65 return ret;
66 }
67 }
68 return 0;
69 }
70
SetLayers(size_t num_displays,DrmCompositionDisplayLayersMap * maps)71 int DrmComposition::SetLayers(size_t num_displays,
72 DrmCompositionDisplayLayersMap *maps) {
73 int ret = 0;
74 for (size_t display_index = 0; display_index < num_displays;
75 display_index++) {
76 DrmCompositionDisplayLayersMap &map = maps[display_index];
77 int display = map.display;
78
79 if (!drm_->GetConnectorForDisplay(display)) {
80 ALOGE("Invalid display given to SetLayers %d", display);
81 continue;
82 }
83
84 ret = composition_map_[display]->SetLayers(
85 map.layers.data(), map.layers.size(), map.geometry_changed);
86 if (ret)
87 return ret;
88 }
89
90 return 0;
91 }
92
SetDpmsMode(int display,uint32_t dpms_mode)93 int DrmComposition::SetDpmsMode(int display, uint32_t dpms_mode) {
94 return composition_map_[display]->SetDpmsMode(dpms_mode);
95 }
96
SetDisplayMode(int display,const DrmMode & display_mode)97 int DrmComposition::SetDisplayMode(int display, const DrmMode &display_mode) {
98 return composition_map_[display]->SetDisplayMode(display_mode);
99 }
100
TakeDisplayComposition(int display)101 std::unique_ptr<DrmDisplayComposition> DrmComposition::TakeDisplayComposition(
102 int display) {
103 return std::move(composition_map_[display]);
104 }
105
Plan(std::map<int,DrmDisplayCompositor> & compositor_map)106 int DrmComposition::Plan(std::map<int, DrmDisplayCompositor> &compositor_map) {
107 int ret = 0;
108 for (auto &conn : drm_->connectors()) {
109 int display = conn->display();
110 DrmDisplayComposition *comp = GetDisplayComposition(display);
111 ret = comp->Plan(compositor_map[display].squash_state(), &primary_planes_,
112 &overlay_planes_);
113 if (ret) {
114 ALOGE("Failed to plan composition for dislay %d", display);
115 return ret;
116 }
117 }
118
119 return 0;
120 }
121
DisableUnusedPlanes()122 int DrmComposition::DisableUnusedPlanes() {
123 for (auto &conn : drm_->connectors()) {
124 int display = conn->display();
125 DrmDisplayComposition *comp = GetDisplayComposition(display);
126
127 /*
128 * Leave empty compositions alone
129 * TODO: re-visit this and potentially disable leftover planes after the
130 * active compositions have gobbled up all they can
131 */
132 if (comp->type() == DRM_COMPOSITION_TYPE_EMPTY ||
133 comp->type() == DRM_COMPOSITION_TYPE_MODESET)
134 continue;
135
136 DrmCrtc *crtc = drm_->GetCrtcForDisplay(display);
137 if (!crtc) {
138 ALOGE("Failed to find crtc for display %d", display);
139 continue;
140 }
141
142 for (std::vector<DrmPlane *>::iterator iter = primary_planes_.begin();
143 iter != primary_planes_.end(); ++iter) {
144 if ((*iter)->GetCrtcSupported(*crtc)) {
145 comp->AddPlaneDisable(*iter);
146 primary_planes_.erase(iter);
147 break;
148 }
149 }
150 for (std::vector<DrmPlane *>::iterator iter = overlay_planes_.begin();
151 iter != overlay_planes_.end();) {
152 if ((*iter)->GetCrtcSupported(*crtc)) {
153 comp->AddPlaneDisable(*iter);
154 iter = overlay_planes_.erase(iter);
155 } else {
156 iter++;
157 }
158 }
159 }
160 return 0;
161 }
162
GetDisplayComposition(int display)163 DrmDisplayComposition *DrmComposition::GetDisplayComposition(int display) {
164 return composition_map_[display].get();
165 }
166 }
167