1 /*
2 * Copyright (C) 2013 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 #include <fcntl.h>
18 #include <malloc.h>
19 #include <poll.h>
20 #include <pthread.h>
21 #include <sys/resource.h>
22
23 #include <log/log.h>
24 #include <utils/Vector.h>
25
26 #include <adf/adf.h>
27 #include <adfhwc/adfhwc.h>
28
29 struct adf_hwc_helper {
30 adf_hwc_event_callbacks const *event_cb;
31 void *event_cb_data;
32
33 pthread_t event_thread;
34
35 android::Vector<int> intf_fds;
36 android::Vector<drm_mode_modeinfo> display_configs;
37 };
38
min(T a,T b)39 template<typename T> inline T min(T a, T b) { return (a < b) ? a : b; }
40
adf_eventControl(struct adf_hwc_helper * dev,int disp,int event,int enabled)41 int adf_eventControl(struct adf_hwc_helper *dev, int disp, int event,
42 int enabled)
43 {
44 if (enabled != !!enabled)
45 return -EINVAL;
46
47 if ((size_t)disp >= dev->intf_fds.size())
48 return -EINVAL;
49
50 switch (event) {
51 case HWC_EVENT_VSYNC:
52 return adf_set_event(dev->intf_fds[disp], ADF_EVENT_VSYNC, enabled);
53 }
54
55 return -EINVAL;
56 }
57
dpi(uint16_t res,uint16_t size_mm)58 static inline int32_t dpi(uint16_t res, uint16_t size_mm)
59 {
60 if (size_mm)
61 return 1000 * (res * 25.4f) / size_mm;
62 return 0;
63 }
64
adf_blank(struct adf_hwc_helper * dev,int disp,int blank)65 int adf_blank(struct adf_hwc_helper *dev, int disp, int blank)
66 {
67 if ((size_t)disp >= dev->intf_fds.size())
68 return -EINVAL;
69
70 uint8_t dpms_mode = blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON;
71 return adf_interface_blank(dev->intf_fds[disp], dpms_mode);
72 }
73
adf_query_display_types_supported(struct adf_hwc_helper * dev,int * value)74 int adf_query_display_types_supported(struct adf_hwc_helper *dev, int *value)
75 {
76 *value = 0;
77 if (dev->intf_fds.size() > 0)
78 *value |= HWC_DISPLAY_PRIMARY_BIT;
79 if (dev->intf_fds.size() > 1)
80 *value |= HWC_DISPLAY_EXTERNAL_BIT;
81
82 return 0;
83 }
84
adf_getDisplayConfigs(struct adf_hwc_helper * dev,int disp,uint32_t * configs,size_t * numConfigs)85 int adf_getDisplayConfigs(struct adf_hwc_helper *dev, int disp,
86 uint32_t *configs, size_t *numConfigs)
87 {
88 if ((size_t)disp >= dev->intf_fds.size())
89 return -EINVAL;
90
91 adf_interface_data data;
92 int err = adf_get_interface_data(dev->intf_fds[disp], &data);
93 if (err < 0) {
94 ALOGE("failed to get ADF interface data: %s", strerror(err));
95 return err;
96 }
97
98 if (!data.hotplug_detect)
99 return -ENODEV;
100
101 android::Vector<drm_mode_modeinfo *> unique_configs;
102 unique_configs.push_back(&data.current_mode);
103 for (size_t i = 0; i < data.n_available_modes; i++)
104 if (memcmp(&data.available_modes[i], &data.current_mode,
105 sizeof(data.current_mode)))
106 unique_configs.push_back(&data.available_modes[i]);
107
108 for (size_t i = 0; i < min(*numConfigs, unique_configs.size()); i++) {
109 configs[i] = dev->display_configs.size();
110 dev->display_configs.push_back(*unique_configs[i]);
111 }
112 *numConfigs = unique_configs.size();
113
114 adf_free_interface_data(&data);
115 return 0;
116 }
117
adf_display_attribute(const adf_interface_data & data,const drm_mode_modeinfo & mode,const uint32_t attribute)118 static int32_t adf_display_attribute(const adf_interface_data &data,
119 const drm_mode_modeinfo &mode, const uint32_t attribute)
120 {
121 switch (attribute) {
122 case HWC_DISPLAY_VSYNC_PERIOD:
123 if (mode.vrefresh)
124 return 1000000000 / mode.vrefresh;
125 return 0;
126
127 case HWC_DISPLAY_WIDTH:
128 return mode.hdisplay;
129
130 case HWC_DISPLAY_HEIGHT:
131 return mode.vdisplay;
132
133 case HWC_DISPLAY_DPI_X:
134 return dpi(mode.hdisplay, data.width_mm);
135
136 case HWC_DISPLAY_DPI_Y:
137 return dpi(mode.vdisplay, data.height_mm);
138
139 default:
140 ALOGE("unknown display attribute %u", attribute);
141 return -EINVAL;
142 }
143 }
144
adf_getDisplayAttributes(struct adf_hwc_helper * dev,int disp,uint32_t config,const uint32_t * attributes,int32_t * values)145 int adf_getDisplayAttributes(struct adf_hwc_helper *dev, int disp,
146 uint32_t config, const uint32_t *attributes, int32_t *values)
147 {
148 if ((size_t)disp >= dev->intf_fds.size())
149 return -EINVAL;
150
151 if (config >= dev->display_configs.size())
152 return -EINVAL;
153
154 adf_interface_data data;
155 int err = adf_get_interface_data(dev->intf_fds[disp], &data);
156 if (err < 0) {
157 ALOGE("failed to get ADF interface data: %s", strerror(err));
158 return err;
159 }
160
161 for (int i = 0; attributes[i] != HWC_DISPLAY_NO_ATTRIBUTE; i++)
162 values[i] = adf_display_attribute(data, dev->display_configs[config],
163 attributes[i]);
164
165 adf_free_interface_data(&data);
166 return 0;
167 }
168
adf_display_attribute_hwc2(const adf_interface_data & data,const drm_mode_modeinfo & mode,const uint32_t attribute)169 static int32_t adf_display_attribute_hwc2(const adf_interface_data &data,
170 const drm_mode_modeinfo &mode, const uint32_t attribute)
171 {
172 switch (attribute) {
173 case HWC2_ATTRIBUTE_VSYNC_PERIOD:
174 if (mode.vrefresh)
175 return 1000000000 / mode.vrefresh;
176 return 0;
177
178 case HWC2_ATTRIBUTE_WIDTH:
179 return mode.hdisplay;
180
181 case HWC2_ATTRIBUTE_HEIGHT:
182 return mode.vdisplay;
183
184 case HWC2_ATTRIBUTE_DPI_X:
185 return dpi(mode.hdisplay, data.width_mm);
186
187 case HWC2_ATTRIBUTE_DPI_Y:
188 return dpi(mode.vdisplay, data.height_mm);
189
190 default:
191 ALOGE("unknown display attribute %u", attribute);
192 return -EINVAL;
193 }
194 }
195
adf_getDisplayAttributes_hwc2(struct adf_hwc_helper * dev,int disp,uint32_t config,const uint32_t * attributes,int32_t * values)196 int adf_getDisplayAttributes_hwc2(struct adf_hwc_helper *dev, int disp,
197 uint32_t config, const uint32_t *attributes, int32_t *values)
198 {
199 if ((size_t)disp >= dev->intf_fds.size())
200 return -EINVAL;
201
202 if (config >= dev->display_configs.size())
203 return -EINVAL;
204
205 adf_interface_data data;
206 int err = adf_get_interface_data(dev->intf_fds[disp], &data);
207 if (err < 0) {
208 ALOGE("failed to get ADF interface data: %s", strerror(err));
209 return err;
210 }
211
212 for (int i = 0; attributes[i] != HWC2_ATTRIBUTE_INVALID; i++)
213 values[i] = adf_display_attribute_hwc2(data,
214 dev->display_configs[config], attributes[i]);
215
216 adf_free_interface_data(&data);
217 return 0;
218 }
219
adf_set_active_config_hwc2(struct adf_hwc_helper * dev,int disp,uint32_t config)220 int adf_set_active_config_hwc2(struct adf_hwc_helper *dev, int disp,
221 uint32_t config)
222 {
223 if ((size_t)disp >= dev->intf_fds.size())
224 return -EINVAL;
225
226 if (config >= dev->display_configs.size())
227 return -EINVAL;
228
229 struct drm_mode_modeinfo mode = dev->display_configs[config];
230
231 return adf_interface_set_mode(dev->intf_fds[disp], &mode);
232 }
233
handle_adf_event(struct adf_hwc_helper * dev,int disp)234 static void handle_adf_event(struct adf_hwc_helper *dev, int disp)
235 {
236 adf_event *event;
237 int err = adf_read_event(dev->intf_fds[disp], &event);
238 if (err < 0) {
239 ALOGE("error reading event from display %d: %s", disp, strerror(err));
240 return;
241 }
242
243 void *vsync_temp;
244 adf_vsync_event *vsync;
245 adf_hotplug_event *hotplug;
246
247 switch (event->type) {
248 case ADF_EVENT_VSYNC:
249 vsync_temp = event;
250 vsync = static_cast<adf_vsync_event *>(vsync_temp);
251 // casting directly to adf_vsync_event * makes g++ warn about
252 // potential alignment issues that don't apply here
253 dev->event_cb->vsync(dev->event_cb_data, disp, vsync->timestamp);
254 break;
255 case ADF_EVENT_HOTPLUG:
256 hotplug = reinterpret_cast<adf_hotplug_event *>(event);
257 dev->event_cb->hotplug(dev->event_cb_data, disp, hotplug->connected);
258 break;
259 default:
260 if (event->type < ADF_EVENT_DEVICE_CUSTOM)
261 ALOGW("unrecognized event type %u", event->type);
262 else if (!dev->event_cb || !dev->event_cb->custom_event)
263 ALOGW("unhandled event type %u", event->type);
264 else
265 dev->event_cb->custom_event(dev->event_cb_data, disp, event);
266 }
267 free(event);
268 }
269
adf_event_thread(void * data)270 static void *adf_event_thread(void *data)
271 {
272 adf_hwc_helper *dev = static_cast<adf_hwc_helper *>(data);
273
274 setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
275
276 struct sigaction action = { };
277 sigemptyset(&action.sa_mask);
278 action.sa_flags = 0;
279 action.sa_handler = [](int) { pthread_exit(0); };
280
281 if (sigaction(SIGUSR2, &action, NULL) < 0) {
282 ALOGE("failed to set thread exit action %s", strerror(errno));
283 return NULL;
284 }
285
286 sigset_t signal_set;
287 sigemptyset(&signal_set);
288 sigaddset(&signal_set, SIGUSR2);
289
290 pthread_sigmask(SIG_UNBLOCK, &signal_set, NULL);
291
292 pollfd fds[dev->intf_fds.size()];
293 for (size_t i = 0; i < dev->intf_fds.size(); i++) {
294 fds[i].fd = dev->intf_fds[i];
295 fds[i].events = POLLIN | POLLPRI;
296 }
297
298 while (true) {
299 if (TEMP_FAILURE_RETRY(poll(fds, dev->intf_fds.size(), -1)) < 0) {
300 ALOGE("error in event thread: %s", strerror(errno));
301 break;
302 }
303
304 for (size_t i = 0; i < dev->intf_fds.size(); i++)
305 if (fds[i].revents & (POLLIN | POLLPRI))
306 handle_adf_event(dev, i);
307 }
308
309 return NULL;
310 }
311
adf_hwc_open(int * intf_fds,size_t n_intfs,const struct adf_hwc_event_callbacks * event_cb,void * event_cb_data,struct adf_hwc_helper ** dev)312 int adf_hwc_open(int *intf_fds, size_t n_intfs,
313 const struct adf_hwc_event_callbacks *event_cb, void *event_cb_data,
314 struct adf_hwc_helper **dev)
315 {
316 if (!n_intfs)
317 return -EINVAL;
318
319 adf_hwc_helper *dev_ret = new adf_hwc_helper;
320 dev_ret->event_cb = event_cb;
321 dev_ret->event_cb_data = event_cb_data;
322
323 int ret;
324
325 for (size_t i = 0; i < n_intfs; i++) {
326 int dup_intf_fd = dup(intf_fds[i]);
327 if (dup_intf_fd < 0) {
328 ALOGE("failed to dup interface fd: %s", strerror(errno));
329 ret = -errno;
330 goto err;
331 }
332
333 dev_ret->intf_fds.push_back(dup_intf_fd);
334
335 ret = adf_set_event(dup_intf_fd, ADF_EVENT_HOTPLUG, 1);
336 if (ret < 0 && ret != -EINVAL) {
337 ALOGE("failed to enable hotplug event on display %zu: %s",
338 i, strerror(errno));
339 goto err;
340 }
341 }
342
343 sigset_t signal_set;
344 sigemptyset(&signal_set);
345 sigaddset(&signal_set, SIGUSR2);
346
347 pthread_sigmask(SIG_BLOCK, &signal_set, NULL);
348
349 ret = pthread_create(&dev_ret->event_thread, NULL, adf_event_thread,
350 dev_ret);
351 if (ret) {
352 ALOGE("failed to create event thread: %s", strerror(ret));
353 goto err;
354 }
355
356 *dev = dev_ret;
357 return 0;
358
359 err:
360 for (size_t i = 0; i < dev_ret->intf_fds.size(); i++)
361 close(dev_ret->intf_fds[i]);
362
363 delete dev_ret;
364 return ret;
365 }
366
adf_hwc_close(struct adf_hwc_helper * dev)367 void adf_hwc_close(struct adf_hwc_helper *dev)
368 {
369 pthread_kill(dev->event_thread, SIGUSR2);
370 pthread_join(dev->event_thread, NULL);
371
372 for (size_t i = 0; i < dev->intf_fds.size(); i++)
373 close(dev->intf_fds[i]);
374
375 delete dev;
376 }
377