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 <adf/adf.h> 24 #include <adfhwc/adfhwc.h> 25 26 #include <cutils/log.h> 27 #include <utils/Vector.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 39 template<typename T> inline T min(T a, T b) { return (a < b) ? a : b; } 40 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 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 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 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 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 } 117 118 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 } 144 145 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 } 168 169 static void handle_adf_event(struct adf_hwc_helper *dev, int disp) 170 { 171 adf_event *event; 172 int err = adf_read_event(dev->intf_fds[disp], &event); 173 if (err < 0) { 174 ALOGE("error reading event from display %d: %s", disp, strerror(err)); 175 return; 176 } 177 178 void *vsync_temp; 179 adf_vsync_event *vsync; 180 adf_hotplug_event *hotplug; 181 182 switch (event->type) { 183 case ADF_EVENT_VSYNC: 184 vsync_temp = event; 185 vsync = static_cast<adf_vsync_event *>(vsync_temp); 186 // casting directly to adf_vsync_event * makes g++ warn about 187 // potential alignment issues that don't apply here 188 dev->event_cb->vsync(dev->event_cb_data, disp, vsync->timestamp); 189 break; 190 case ADF_EVENT_HOTPLUG: 191 hotplug = reinterpret_cast<adf_hotplug_event *>(event); 192 dev->event_cb->hotplug(dev->event_cb_data, disp, hotplug->connected); 193 break; 194 default: 195 if (event->type < ADF_EVENT_DEVICE_CUSTOM) 196 ALOGW("unrecognized event type %u", event->type); 197 else if (!dev->event_cb || !dev->event_cb->custom_event) 198 ALOGW("unhandled event type %u", event->type); 199 else 200 dev->event_cb->custom_event(dev->event_cb_data, disp, event); 201 } 202 free(event); 203 } 204 205 static void *adf_event_thread(void *data) 206 { 207 adf_hwc_helper *dev = static_cast<adf_hwc_helper *>(data); 208 209 setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY); 210 211 pollfd *fds = new pollfd[dev->intf_fds.size()]; 212 for (size_t i = 0; i < dev->intf_fds.size(); i++) { 213 fds[i].fd = dev->intf_fds[i]; 214 fds[i].events = POLLIN | POLLPRI; 215 } 216 217 while (true) { 218 int err = poll(fds, dev->intf_fds.size(), -1); 219 220 if (err > 0) { 221 for (size_t i = 0; i < dev->intf_fds.size(); i++) 222 if (fds[i].revents & (POLLIN | POLLPRI)) 223 handle_adf_event(dev, i); 224 } 225 else if (err == -1) { 226 if (errno == EINTR) 227 break; 228 ALOGE("error in event thread: %s", strerror(errno)); 229 } 230 } 231 232 delete [] fds; 233 return NULL; 234 } 235 236 int adf_hwc_open(int *intf_fds, size_t n_intfs, 237 const struct adf_hwc_event_callbacks *event_cb, void *event_cb_data, 238 struct adf_hwc_helper **dev) 239 { 240 if (!n_intfs) 241 return -EINVAL; 242 243 adf_hwc_helper *dev_ret = new adf_hwc_helper; 244 dev_ret->event_cb = event_cb; 245 dev_ret->event_cb_data = event_cb_data; 246 247 int ret; 248 249 for (size_t i = 0; i < n_intfs; i++) { 250 int dup_intf_fd = dup(intf_fds[i]); 251 if (dup_intf_fd < 0) { 252 ALOGE("failed to dup interface fd: %s", strerror(errno)); 253 ret = -errno; 254 goto err; 255 } 256 257 dev_ret->intf_fds.push_back(dup_intf_fd); 258 259 ret = adf_set_event(dup_intf_fd, ADF_EVENT_HOTPLUG, 1); 260 if (ret < 0 && ret != -EINVAL) { 261 ALOGE("failed to enable hotplug event on display %zu: %s", 262 i, strerror(errno)); 263 goto err; 264 } 265 } 266 267 ret = pthread_create(&dev_ret->event_thread, NULL, adf_event_thread, 268 dev_ret); 269 if (ret) { 270 ALOGE("failed to create event thread: %s", strerror(ret)); 271 goto err; 272 } 273 274 *dev = dev_ret; 275 return 0; 276 277 err: 278 for (size_t i = 0; i < dev_ret->intf_fds.size(); i++) 279 close(dev_ret->intf_fds[i]); 280 281 delete dev_ret; 282 return ret; 283 } 284 285 void adf_hwc_close(struct adf_hwc_helper *dev) 286 { 287 pthread_kill(dev->event_thread, SIGTERM); 288 pthread_join(dev->event_thread, NULL); 289 290 for (size_t i = 0; i < dev->intf_fds.size(); i++) 291 close(dev->intf_fds[i]); 292 293 delete dev; 294 } 295
