2 * Copyright (C) 2015 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #define LOG_TAG "hwc-drm-resources"
19 #include "drmconnector.h"
21 #include "drmencoder.h"
23 #include "drmresources.h"
29 #include <xf86drmMode.h>
31 #include <cutils/log.h>
32 #include <cutils/properties.h>
36 DrmResources::DrmResources() : fd_(-1), mode_id_(0), compositor_(this) {
39 DrmResources::~DrmResources() {
40 for (std::vector<DrmConnector *>::const_iterator iter = connectors_.begin();
41 iter != connectors_.end(); ++iter)
45 for (std::vector<DrmEncoder *>::const_iterator iter = encoders_.begin();
46 iter != encoders_.end(); ++iter)
50 for (std::vector<DrmCrtc *>::const_iterator iter = crtcs_.begin();
51 iter != crtcs_.end(); ++iter)
55 for (std::vector<DrmPlane *>::const_iterator iter = planes_.begin();
56 iter != planes_.end(); ++iter)
64 int DrmResources::Init() {
65 char path[PROPERTY_VALUE_MAX];
66 property_get("hwc.drm.device", path, "/dev/dri/card0");
68 /* TODO: Use drmOpenControl here instead */
69 fd_ = open(path, O_RDWR);
71 ALOGE("Failed to open dri- %s", strerror(-errno));
75 int ret = drmSetClientCap(fd_, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
77 ALOGE("Failed to set universal plane cap %d", ret);
81 ret = drmSetClientCap(fd_, DRM_CLIENT_CAP_ATOMIC, 1);
83 ALOGE("Failed to set atomic cap %d", ret);
87 drmModeResPtr res = drmModeGetResources(fd_);
89 ALOGE("Failed to get DrmResources resources");
93 bool found_primary = false;
96 for (int i = 0; !ret && i < res->count_crtcs; ++i) {
97 drmModeCrtcPtr c = drmModeGetCrtc(fd_, res->crtcs[i]);
99 ALOGE("Failed to get crtc %d", res->crtcs[i]);
104 DrmCrtc *crtc = new DrmCrtc(c, i);
109 ALOGE("Failed to allocate crtc %d", res->crtcs[i]);
113 crtcs_.push_back(crtc);
116 for (int i = 0; !ret && i < res->count_encoders; ++i) {
117 drmModeEncoderPtr e = drmModeGetEncoder(fd_, res->encoders[i]);
119 ALOGE("Failed to get encoder %d", res->encoders[i]);
124 std::vector<DrmCrtc *> possible_crtcs;
125 DrmCrtc *current_crtc = NULL;
126 for (std::vector<DrmCrtc *>::const_iterator iter = crtcs_.begin();
127 iter != crtcs_.end(); ++iter) {
128 if ((1 << (*iter)->pipe()) & e->possible_crtcs)
129 possible_crtcs.push_back(*iter);
131 if ((*iter)->id() == e->crtc_id)
132 current_crtc = (*iter);
135 DrmEncoder *enc = new DrmEncoder(e, current_crtc, possible_crtcs);
137 drmModeFreeEncoder(e);
140 ALOGE("Failed to allocate enc %d", res->encoders[i]);
144 encoders_.push_back(enc);
147 for (int i = 0; !ret && i < res->count_connectors; ++i) {
148 drmModeConnectorPtr c = drmModeGetConnector(fd_, res->connectors[i]);
150 ALOGE("Failed to get connector %d", res->connectors[i]);
155 std::vector<DrmEncoder *> possible_encoders;
156 DrmEncoder *current_encoder = NULL;
157 for (int j = 0; j < c->count_encoders; ++j) {
158 for (std::vector<DrmEncoder *>::const_iterator iter = encoders_.begin();
159 iter != encoders_.end(); ++iter) {
160 if ((*iter)->id() == c->encoders[j])
161 possible_encoders.push_back((*iter));
162 if ((*iter)->id() == c->encoder_id)
163 current_encoder = *iter;
168 new DrmConnector(this, c, current_encoder, possible_encoders);
170 drmModeFreeConnector(c);
173 ALOGE("Failed to allocate conn %d", res->connectors[i]);
180 ALOGE("Init connector %d failed", res->connectors[i]);
184 connectors_.push_back(conn);
186 if (conn->built_in() && !found_primary) {
187 conn->set_display(0);
188 found_primary = true;
190 conn->set_display(display_num);
195 drmModeFreeResources(res);
197 // Catch-all for the above loops
201 drmModePlaneResPtr plane_res = drmModeGetPlaneResources(fd_);
203 ALOGE("Failed to get plane resources");
207 for (uint32_t i = 0; i < plane_res->count_planes; ++i) {
208 drmModePlanePtr p = drmModeGetPlane(fd_, plane_res->planes[i]);
210 ALOGE("Failed to get plane %d", plane_res->planes[i]);
215 DrmPlane *plane = new DrmPlane(this, p);
220 ALOGE("Allocate plane %d failed", plane_res->planes[i]);
227 ALOGE("Init plane %d failed", plane_res->planes[i]);
232 planes_.push_back(plane);
234 drmModeFreePlaneResources(plane_res);
238 return compositor_.Init();
241 int DrmResources::fd() const {
245 DrmResources::ConnectorIter DrmResources::begin_connectors() const {
246 return connectors_.begin();
249 DrmResources::ConnectorIter DrmResources::end_connectors() const {
250 return connectors_.end();
253 DrmConnector *DrmResources::GetConnectorForDisplay(int display) const {
254 for (ConnectorIter iter = connectors_.begin(); iter != connectors_.end();
256 if ((*iter)->display() == display)
262 DrmCrtc *DrmResources::GetCrtcForDisplay(int display) const {
263 for (std::vector<DrmCrtc *>::const_iterator iter = crtcs_.begin();
264 iter != crtcs_.end(); ++iter) {
265 if ((*iter)->display() == display)
271 DrmResources::PlaneIter DrmResources::begin_planes() const {
272 return planes_.begin();
275 DrmResources::PlaneIter DrmResources::end_planes() const {
276 return planes_.end();
279 DrmPlane *DrmResources::GetPlane(uint32_t id) const {
280 for (std::vector<DrmPlane *>::const_iterator iter = planes_.begin();
281 iter != planes_.end(); ++iter) {
282 if ((*iter)->id() == id)
288 uint32_t DrmResources::next_mode_id() {
292 int DrmResources::TryEncoderForDisplay(int display, DrmEncoder *enc) {
293 /* First try to use the currently-bound crtc */
294 DrmCrtc *crtc = enc->crtc();
295 if (crtc && crtc->can_bind(display)) {
296 crtc->set_display(display);
300 /* Try to find a possible crtc which will work */
301 for (DrmEncoder::CrtcIter iter = enc->begin_possible_crtcs();
302 iter != enc->end_possible_crtcs(); ++iter) {
303 /* We've already tried this earlier */
304 if (*iter == enc->crtc())
307 if ((*iter)->can_bind(display)) {
308 enc->set_crtc(*iter);
309 (*iter)->set_display(display);
314 /* We can't use the encoder, but nothing went wrong, try another one */
318 int DrmResources::SetDisplayActiveMode(int display, uint32_t mode_id) {
322 DrmConnector *con = GetConnectorForDisplay(display);
324 ALOGE("Could not locate connector for display %d", display);
328 /* Try to use current setup first */
329 enc = con->encoder();
331 ret = TryEncoderForDisplay(display, enc);
333 con->set_encoder(enc);
334 return con->set_active_mode(mode_id);
335 } else if (ret != -EAGAIN) {
336 ALOGE("Could not set mode %d/%d", display, ret);
341 for (DrmConnector::EncoderIter iter = con->begin_possible_encoders();
342 iter != con->end_possible_encoders(); ++iter) {
343 ret = TryEncoderForDisplay(display, *iter);
345 con->set_encoder(*iter);
346 return con->set_active_mode(mode_id);
347 } else if (ret != -EAGAIN) {
348 ALOGE("Could not set mode %d/%d", display, ret);
353 ALOGE("Could not find a suitable encoder/crtc for display %d", display);
357 int DrmResources::SetDpmsMode(int display, uint64_t mode) {
358 if (mode != DRM_MODE_DPMS_ON && mode != DRM_MODE_DPMS_OFF) {
359 ALOGE("Invalid dpms mode %d", mode);
363 DrmCrtc *crtc = GetCrtcForDisplay(display);
365 ALOGE("Failed to get DrmCrtc for display %d", display);
368 crtc->set_requires_modeset(true);
370 DrmConnector *c = GetConnectorForDisplay(display);
372 ALOGE("Failed to get DrmConnector for display %d", display);
376 const DrmProperty &prop = c->dpms_property();
377 int ret = drmModeConnectorSetProperty(fd_, c->id(), prop.id(), mode);
379 ALOGE("Failed to set DPMS property for connector %d", c->id());
386 DrmCompositor *DrmResources::compositor() {
390 int DrmResources::GetProperty(uint32_t obj_id, uint32_t obj_type,
391 const char *prop_name, DrmProperty *property) {
392 drmModeObjectPropertiesPtr props;
394 props = drmModeObjectGetProperties(fd_, obj_id, obj_type);
396 ALOGE("Failed to get properties for %d/%x", obj_id, obj_type);
401 for (int i = 0; !found && (size_t)i < props->count_props; ++i) {
402 drmModePropertyPtr p = drmModeGetProperty(fd_, props->props[i]);
403 if (!strcmp(p->name, prop_name)) {
404 property->Init(p, props->prop_values[i]);
407 drmModeFreeProperty(p);
410 drmModeFreeObjectProperties(props);
411 return found ? 0 : -ENOENT;
414 int DrmResources::GetPlaneProperty(const DrmPlane &plane, const char *prop_name,
415 DrmProperty *property) {
416 return GetProperty(plane.id(), DRM_MODE_OBJECT_PLANE, prop_name, property);
419 int DrmResources::GetConnectorProperty(const DrmConnector &connector,
420 const char *prop_name,
421 DrmProperty *property) {
422 return GetProperty(connector.id(), DRM_MODE_OBJECT_CONNECTOR, prop_name,