src/tdm.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   7  * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
   8  *          JinYoung Jeon <jy0.jeon@samsung.com>,
   9  *          Taeheon Kim <th908.kim@samsung.com>,
  10  *          YoungJun Cho <yj44.cho@samsung.com>,
  11  *          SooChan Lim <sc1.lim@samsung.com>,
  12  *          Boram Park <boram1288.park@samsung.com>
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the
  16  * "Software"), to deal in the Software without restriction, including
  17  * without limitation the rights to use, copy, modify, merge, publish,
  18  * distribute, sub license, and/or sell copies of the Software, and to
  19  * permit persons to whom the Software is furnished to do so, subject to
  20  * the following conditions:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  27  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  29  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  30  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  31  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  32  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include "tdm_private.h"
  41
  42 pthread_mutex_t tdm_mutex_check_lock = PTHREAD_MUTEX_INITIALIZER;
  43 int tdm_mutex_locked;
  44 const char *tdm_mutex_lock_func;
  45 int tdm_mutex_lock_line;
  46 const char *tdm_mutex_unlock_func;
  47 int tdm_mutex_unlock_line;
  48
  49 pthread_mutex_t tdm_debug_mutex_check_lock = PTHREAD_MUTEX_INITIALIZER;
  50 const char *tdm_debug_mutex_lock_func;
  51 int tdm_debug_mutex_lock_line;
  52
  53 static tdm_error _tdm_display_load_module_with_file(tdm_private_display *private_display, const char *file);
  54
  55 /* LCOV_EXCL_START */
  56 static tdm_private_layer *
  57 _tdm_display_find_private_layer(tdm_private_output *private_output,
  58                                                                 tdm_layer *layer_backend)
  59 {
  60         tdm_private_layer *private_layer = NULL;
  61
  62         LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link) {
  63                 if (private_layer->layer_backend == layer_backend)
  64                         return private_layer;
  65         }
  66
  67         return NULL;
  68 }
  69
  70 INTERN tdm_private_output *
  71 tdm_display_find_private_output(tdm_private_display *private_display, tdm_output *output_backend)
  72 {
  73         tdm_private_module *private_module = NULL;
  74         tdm_private_output *private_output = NULL;
  75
  76         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
  77                 LIST_FOR_EACH_ENTRY(private_output, &private_module->output_list, link) {
  78                         if (private_output->output_backend == output_backend)
  79                                 return private_output;
  80                 }
  81         }
  82
  83         return NULL;
  84 }
  85
  86 INTERN unsigned int
  87 tdm_display_find_empty_output_pipe(tdm_private_display *private_display)
  88 {
  89         tdm_private_module *private_module = NULL;
  90         tdm_private_output *private_output = NULL;
  91         unsigned int pipe = 0;
  92         while (1) {
  93                 int found = 0;
  94                 LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
  95                         LIST_FOR_EACH_ENTRY(private_output, &private_module->output_list, link) {
  96                                 if (private_output->pipe == pipe) {
  97                                         found = 1;
  98                                         break;
  99                                 }
 100                         }
 101                         if (found)
 102                                 break;
 103                 }
 104
 105                 if (!found)
 106                         break;
 107                 else
 108                         pipe++;
 109         }
 110
 111         return pipe;
 112 }
 113
 114 INTERN void *
 115 tdm_display_find_output_stamp(tdm_private_display *private_display, double stamp)
 116 {
 117         tdm_private_module *private_module = NULL;
 118         tdm_private_output *private_output = NULL;
 119
 120         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
 121                 LIST_FOR_EACH_ENTRY(private_output, &private_module->output_list, link) {
 122                         if (private_output->stamp == stamp)
 123                                 return private_output;
 124                 }
 125         }
 126
 127         return NULL;
 128 }
 129
 130 INTERN void *
 131 tdm_display_find_private_voutput(tdm_private_display *private_display, double stamp)
 132 {
 133         tdm_private_module *private_module = NULL;
 134         tdm_private_voutput *private_voutput = NULL;
 135         tdm_private_output *private_output = NULL;
 136
 137         private_module = private_display->virtual_module;
 138         if (!private_module) return NULL;
 139
 140         LIST_FOR_EACH_ENTRY(private_voutput, &private_module->voutput_list, link) {
 141                 if (!private_voutput->private_output) continue;
 142                 private_output = private_voutput->private_output;
 143                 if (private_output->stamp == stamp)
 144                         return private_voutput;
 145         }
 146
 147         return NULL;
 148 }
 149
 150 tdm_private_hwc *
 151 tdm_display_find_private_hwc(tdm_private_display *private_display, tdm_hwc *hwc_backend)
 152 {
 153         tdm_private_module *private_module = NULL;
 154         tdm_private_output *private_output = NULL;
 155         tdm_private_hwc *private_hwc = NULL;
 156
 157         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
 158                 LIST_FOR_EACH_ENTRY(private_output, &private_module->output_list, link) {
 159                         if (!private_output->private_hwc) continue;
 160                         private_hwc = private_output->private_hwc;
 161                         if (private_hwc->hwc_backend == hwc_backend)
 162                                 return private_hwc;
 163                 }
 164         }
 165
 166         return NULL;
 167 }
 168
 169 INTERN void *
 170 tdm_display_find_hwc_stamp(tdm_private_display *private_display, double stamp)
 171 {
 172         tdm_private_module *private_module = NULL;
 173         tdm_private_output *private_output = NULL;
 174         tdm_private_hwc *private_hwc = NULL;
 175
 176         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
 177                 LIST_FOR_EACH_ENTRY(private_output, &private_module->output_list, link) {
 178                         if (!private_output->private_hwc) continue;
 179                         private_hwc = private_output->private_hwc;
 180                         if (private_hwc->stamp == stamp)
 181                                 return private_hwc;
 182                 }
 183         }
 184
 185         return NULL;
 186 }
 187
 188 static void
 189 _tdm_display_destroy_caps_pp(tdm_caps_pp *caps_pp)
 190 {
 191         if (caps_pp->formats)
 192                 free(caps_pp->formats);
 193
 194         memset(caps_pp, 0, sizeof(tdm_caps_pp));
 195 }
 196
 197 static void
 198 _tdm_display_destroy_caps_capture(tdm_caps_capture *caps_capture)
 199 {
 200         if (caps_capture->formats)
 201                 free(caps_capture->formats);
 202
 203         memset(caps_capture, 0, sizeof(tdm_caps_capture));
 204 }
 205
 206 static void
 207 _tdm_display_destroy_caps_layer(tdm_caps_layer *caps_layer)
 208 {
 209         if (caps_layer->formats)
 210                 free(caps_layer->formats);
 211
 212         if (caps_layer->props)
 213                 free(caps_layer->props);
 214
 215         memset(caps_layer, 0, sizeof(tdm_caps_layer));
 216 }
 217
 218 static void
 219 _tdm_display_destroy_caps_output(tdm_caps_output *caps_output)
 220 {
 221         if (caps_output->modes)
 222                 free(caps_output->modes);
 223
 224         if (caps_output->props)
 225                 free(caps_output->props);
 226
 227         memset(caps_output, 0, sizeof(tdm_caps_output));
 228 }
 229
 230 static void
 231 _tdm_display_destroy_private_layer(tdm_private_layer *private_layer)
 232 {
 233         tdm_private_capture *c = NULL, *cc = NULL;
 234
 235         tdm_layer_unset_buffer_internal(private_layer);
 236
 237         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &private_layer->capture_list, link)
 238         tdm_capture_destroy_internal(c);
 239
 240         _tdm_display_destroy_caps_layer(&private_layer->caps);
 241
 242         /* when destroying layer, someone could check if layer is valid. So delete
 243          * the layer's link at last.
 244          */
 245         LIST_DEL(&private_layer->link);
 246
 247         free(private_layer);
 248 }
 249
 250 INTERN void
 251 tdm_display_destroy_private_output(tdm_private_output *private_output)
 252 {
 253         tdm_private_display *private_display = private_output->private_display;
 254         tdm_private_layer *l = NULL, *ll = NULL;
 255         tdm_private_hwc *private_hwc = NULL;
 256         tdm_private_hwc_window *hw = NULL, *hww = NULL;
 257         tdm_private_capture *c = NULL, *cc = NULL;
 258         tdm_private_output_vblank_handler *v = NULL, *vv = NULL;
 259         tdm_private_output_commit_handler *om = NULL, *omm = NULL;
 260         tdm_private_hwc_commit_handler *hm = NULL, *hmm = NULL;
 261         tdm_private_layer_commit_handler *lm = NULL, *lmm = NULL;
 262         tdm_private_output_change_handler *h = NULL, *hh = NULL;
 263         tdm_private_output_destroy_handler *dh = NULL, *dhh = NULL;
 264         tdm_error ret;
 265
 266         ret = tdm_output_call_thread_cb_destroy(private_output);
 267         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 268
 269         free(private_output->layers_ptr);
 270
 271         if (private_output->vblank_timeout_timer)
 272                 tdm_event_loop_source_remove(private_output->vblank_timeout_timer);
 273
 274         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &private_output->vblank_handler_list, link) {
 275                 LIST_DEL(&v->link);
 276                 free(v);
 277         }
 278
 279         LIST_FOR_EACH_ENTRY_SAFE(om, omm, &private_output->output_commit_handler_list, link) {
 280                 LIST_DEL(&om->link);
 281                 free(om);
 282         }
 283
 284         if (private_output->private_hwc) {
 285                 private_hwc = private_output->private_hwc;
 286                 LIST_FOR_EACH_ENTRY_SAFE(hm, hmm, &private_hwc->hwc_commit_handler_list, link) {
 287                         LIST_DEL(&hm->link);
 288                         free(hm);
 289                 }
 290         } else {
 291                 LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &private_output->layer_commit_handler_list, link) {
 292                         LIST_DEL(&lm->link);
 293                         free(lm);
 294                 }
 295         }
 296
 297         LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &private_output->pending_commit_handler_list, link) {
 298                 LIST_DEL(&lm->link);
 299                 free(lm);
 300         }
 301
 302         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list, link) {
 303                 LIST_DEL(&h->link);
 304                 tdm_thread_cb_remove(h->private_output, TDM_THREAD_CB_OUTPUT_DPMS, NULL, tdm_output_thread_cb_change, h);
 305                 tdm_thread_cb_remove(h->private_output, TDM_THREAD_CB_OUTPUT_STATUS, NULL, tdm_output_thread_cb_change, h);
 306                 free(h);
 307         }
 308
 309         LIST_FOR_EACH_ENTRY_SAFE(dh, dhh, &private_output->destroy_handler_list, link) {
 310                 LIST_DEL(&dh->link);
 311                 tdm_thread_cb_remove(dh->private_output, TDM_THREAD_CB_OUTPUT_DESTROY, NULL, tdm_output_thread_cb_destroy, dh);
 312                 free(dh);
 313         }
 314
 315         if (private_output->vblank) {
 316                 /* tdm_vblank APIs is for server. it should be called in unlock status*/
 317                 _pthread_mutex_unlock(&private_display->lock);
 318                 tdm_vblank_destroy(private_output->vblank);
 319                 _pthread_mutex_lock(&private_display->lock);
 320         }
 321
 322         if (private_output->ttrace_vblank) {
 323                 /* tdm_vblank APIs is for server. it should be called in unlock status*/
 324                 _pthread_mutex_unlock(&private_display->lock);
 325                 tdm_vblank_destroy(private_output->ttrace_vblank);
 326                 _pthread_mutex_lock(&private_display->lock);
 327         }
 328
 329         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &private_output->capture_list, link)
 330                 tdm_capture_destroy_internal(c);
 331
 332         if (private_output->private_hwc) {
 333                 private_hwc = private_output->private_hwc;
 334                 LIST_FOR_EACH_ENTRY_SAFE(hw, hww, &private_hwc->hwc_window_list, link)
 335                         tdm_hwc_window_destroy_internal(hw);
 336                 free(private_hwc);
 337         } else {
 338                 LIST_FOR_EACH_ENTRY_SAFE(l, ll, &private_output->layer_list, link)
 339                         _tdm_display_destroy_private_layer(l);
 340         }
 341
 342         _tdm_display_destroy_caps_output(&private_output->caps);
 343
 344         /* when destroying output, vblank objects are also destroyed. vblank checks
 345          * if output object is valid. So delete the output's link at last.
 346          */
 347         LIST_DEL(&private_output->link);
 348
 349         private_output->stamp = 0;
 350         free(private_output);
 351 }
 352
 353 static void
 354 _tdm_display_destroy_private_display(tdm_private_display *private_display)
 355 {
 356         tdm_private_module *private_module = NULL, *bb = NULL;
 357         tdm_private_output *o = NULL, *oo = NULL;
 358         tdm_private_pp *p = NULL, *pp = NULL;
 359         tdm_private_output_create_handler *ch = NULL, *chh = NULL;
 360
 361         LIST_FOR_EACH_ENTRY_SAFE(private_module, bb, &private_display->module_list, link) {
 362                 LIST_FOR_EACH_ENTRY_SAFE(p, pp, &private_module->pp_list, link) {
 363                         tdm_pp_destroy_internal(p);
 364                 }
 365
 366                 LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_module->output_list, link) {
 367                         tdm_display_destroy_private_output(o);
 368                 }
 369
 370                 _tdm_display_destroy_caps_pp(&private_module->caps_pp);
 371                 _tdm_display_destroy_caps_capture(&private_module->caps_capture);
 372
 373                 private_module->capabilities = 0;
 374                 private_module->caps_display.max_layer_count = 0;
 375
 376                 if (private_module->outputs) {
 377                         free(private_module->outputs);
 378                         private_module->outputs = NULL;
 379                 }
 380         }
 381
 382         LIST_FOR_EACH_ENTRY_SAFE(ch, chh, &private_display->output_create_handler_list, link) {
 383                 LIST_DEL(&ch->link);
 384                 tdm_thread_cb_remove(ch->private_display, TDM_THREAD_CB_DISPLAY_OUTPUT_CREATE, NULL,
 385                                                          tdm_display_thread_cb_output_create, ch);
 386                 free(ch);
 387         }
 388 }
 389
 390 static tdm_error
 391 _tdm_display_update_caps_pp(tdm_private_module *private_module, tdm_caps_pp *caps)
 392 {
 393         tdm_func_display *func_display;
 394         tdm_error ret;
 395
 396         func_display = &private_module->func_display;
 397
 398         if (!func_display->display_get_pp_capability) {
 399                 TDM_ERR("backend(%s) no display_get_pp_capability()", private_module->module_data->name);
 400                 return TDM_ERROR_BAD_MODULE;
 401         }
 402
 403         ret = func_display->display_get_pp_capability(private_module->bdata, caps);
 404         if (ret != TDM_ERROR_NONE) {
 405                 TDM_ERR("backend(%s) display_get_pp_capability() failed", private_module->module_data->name);
 406                 return TDM_ERROR_BAD_MODULE;
 407         }
 408
 409         return TDM_ERROR_NONE;
 410 }
 411
 412 static tdm_error
 413 _tdm_display_update_caps_capture(tdm_private_module *private_module, tdm_caps_capture *caps)
 414 {
 415         tdm_func_display *func_display;
 416         tdm_error ret;
 417
 418         func_display = &private_module->func_display;
 419
 420         if (!func_display->display_get_capture_capability) {
 421                 TDM_ERR("backend(%s) no display_get_capture_capability()", private_module->module_data->name);
 422                 return TDM_ERROR_BAD_MODULE;
 423         }
 424
 425         ret = func_display->display_get_capture_capability(private_module->bdata, caps);
 426         if (ret != TDM_ERROR_NONE) {
 427                 TDM_ERR("backend(%s) display_get_capture_capability() failed", private_module->module_data->name);
 428                 return TDM_ERROR_BAD_MODULE;
 429         }
 430
 431         return TDM_ERROR_NONE;
 432 }
 433
 434 static tdm_error
 435 _tdm_display_update_caps_layer(tdm_private_module *private_module,
 436                                                            tdm_layer *layer_backend, tdm_caps_layer *caps)
 437 {
 438         tdm_func_layer *func_layer = &private_module->func_layer;
 439         tdm_error ret;
 440
 441         if (!func_layer->layer_get_capability) {
 442                 TDM_ERR("backend(%s) no layer_get_capability()", private_module->module_data->name);
 443                 return TDM_ERROR_BAD_MODULE;
 444         }
 445
 446         ret = func_layer->layer_get_capability(layer_backend, caps);
 447         if (ret != TDM_ERROR_NONE) {
 448                 TDM_ERR("backend(%s) layer_get_capability() failed", private_module->module_data->name);
 449                 return TDM_ERROR_BAD_MODULE;
 450         }
 451
 452         return TDM_ERROR_NONE;
 453 }
 454
 455 static tdm_error
 456 _tdm_display_update_caps_output(tdm_private_module *private_module, int pipe,
 457                                                                 tdm_output *output_backend, tdm_caps_output *caps)
 458 {
 459         tdm_func_output *func_output = &private_module->func_output;
 460         char temp[TDM_NAME_LEN];
 461         tdm_error ret;
 462         double stamp;
 463
 464         stamp = tdm_helper_get_time();
 465         ret = func_output->output_get_capability(output_backend, caps);
 466         TDM_DBG("backend(%s) backend output_get_capability() time: %.3f ms",
 467                         private_module->module_data->name, (tdm_helper_get_time() - stamp) * 1000.0);
 468
 469         if (ret != TDM_ERROR_NONE) {
 470                 TDM_ERR("backend(%s) output_get_capability() failed", private_module->module_data->name);
 471                 return TDM_ERROR_BAD_MODULE;
 472         }
 473
 474         /* FIXME: Use model for tdm client to distinguish amoung outputs */
 475         snprintf(temp, TDM_NAME_LEN, "%s-%d", caps->model, pipe);
 476         snprintf(caps->model, TDM_NAME_LEN, "%s", temp);
 477
 478         return TDM_ERROR_NONE;
 479 }
 480
 481 static tdm_error
 482 _tdm_display_update_layer(tdm_private_output *private_output,
 483                                                   tdm_layer *layer_backend, int index)
 484 {
 485         tdm_private_layer *private_layer;
 486         tdm_error ret;
 487
 488         private_layer = _tdm_display_find_private_layer(private_output, layer_backend);
 489         if (!private_layer) {
 490                 private_layer = calloc(1, sizeof(tdm_private_layer));
 491                 TDM_RETURN_VAL_IF_FAIL(private_layer != NULL, TDM_ERROR_OUT_OF_MEMORY);
 492
 493                 LIST_ADDTAIL(&private_layer->link, &private_output->layer_list);
 494                 LIST_INITHEAD(&private_layer->capture_list);
 495
 496                 private_layer->index = index;
 497                 private_layer->private_module = private_output->private_module;
 498                 private_layer->private_display = private_output->private_display;
 499                 private_layer->private_output = private_output;
 500                 private_layer->layer_backend = layer_backend;
 501                 private_layer->usable = 1;
 502         }
 503
 504         _tdm_display_destroy_caps_layer(&private_layer->caps);
 505
 506         ret = _tdm_display_update_caps_layer(private_output->private_module, layer_backend, &private_layer->caps);
 507         TDM_RETURN_VAL_IF_FAIL(ret == TDM_ERROR_NONE, ret);
 508
 509         return TDM_ERROR_NONE;
 510 }
 511
 512 INTERN tdm_error
 513 tdm_display_update_output(tdm_private_module *private_module, tdm_output *output_backend)
 514 {
 515         tdm_func_output *func_output = &private_module->func_output;
 516         tdm_private_display *private_display = NULL;
 517         tdm_private_output *private_output = NULL;
 518         tdm_layer **layers = NULL;
 519         tdm_private_hwc *private_hwc = NULL;
 520         tdm_hwc *hwc;
 521         int layer_count = 0, i;
 522         tdm_error ret;
 523         unsigned int output_created = 0;
 524
 525         private_display = private_module->private_display;
 526
 527         private_output = tdm_display_find_private_output(private_display, output_backend);
 528         if (!private_output) {
 529                 unsigned int pipe = tdm_display_find_empty_output_pipe(private_display);
 530
 531                 private_output = calloc(1, sizeof(tdm_private_output));
 532                 TDM_RETURN_VAL_IF_FAIL(private_output != NULL, TDM_ERROR_OUT_OF_MEMORY);
 533
 534                 private_output->stamp = tdm_helper_get_time();
 535                 while (tdm_display_find_output_stamp(private_display, private_output->stamp))
 536                         private_output->stamp++;
 537
 538                 LIST_ADDTAIL(&private_output->link, &private_module->output_list);
 539
 540                 private_output->private_module = private_module;
 541                 private_output->private_display = private_display;
 542                 private_output->current_dpms_value = TDM_OUTPUT_DPMS_OFF;
 543                 private_output->output_backend = output_backend;
 544                 private_output->pipe = pipe;
 545                 private_output->index = pipe;
 546
 547                 LIST_INITHEAD(&private_output->capture_list);
 548                 LIST_INITHEAD(&private_output->vblank_handler_list);
 549                 LIST_INITHEAD(&private_output->output_commit_handler_list);
 550                 LIST_INITHEAD(&private_output->pending_commit_handler_list);
 551                 LIST_INITHEAD(&private_output->destroy_handler_list);
 552                 LIST_INITHEAD(&private_output->change_handler_list);
 553                 LIST_INITHEAD(&private_output->mode_change_request_handler_list);
 554
 555                 if (func_output->output_set_status_handler) {
 556                         func_output->output_set_status_handler(private_output->output_backend,
 557                                                                                                    tdm_output_cb_status,
 558                                                                                                    private_output);
 559                         private_output->regist_change_cb = 1;
 560                 }
 561
 562                 output_created = 1;
 563
 564                 /* NOTE that output modes will be allocated newly after here */
 565                 _tdm_display_destroy_caps_output(&private_output->caps);
 566                 ret = _tdm_display_update_caps_output(private_module, private_output->pipe, output_backend, &private_output->caps);
 567                 TDM_RETURN_VAL_IF_FAIL(ret == TDM_ERROR_NONE, ret);
 568
 569                 if (private_output->caps.status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 570                         private_output->current_mode = NULL;
 571
 572                 /* get the tdm_hwc object */
 573                 if (private_output->caps.capabilities&TDM_OUTPUT_CAPABILITY_HWC) {
 574                         hwc = func_output->output_get_hwc(output_backend, &ret);
 575                         TDM_RETURN_VAL_IF_FAIL(hwc != NULL, ret);
 576
 577                         private_hwc = calloc(1, sizeof(tdm_private_hwc));
 578                         TDM_RETURN_VAL_IF_FAIL(private_hwc != NULL, TDM_ERROR_OUT_OF_MEMORY);
 579
 580                         private_hwc->private_module = private_module;
 581                         private_hwc->private_output = private_output;
 582                         private_hwc->hwc_backend = hwc;
 583                         private_hwc->index = pipe;
 584                         private_hwc->stamp = tdm_helper_get_time();
 585                         while (tdm_display_find_hwc_stamp(private_module->private_display, private_hwc->stamp))
 586                                 private_hwc->stamp++;
 587
 588                         LIST_INITHEAD(&private_hwc->hwc_window_list);
 589                         LIST_INITHEAD(&private_hwc->hwc_commit_handler_list);
 590
 591                         private_output->private_hwc = private_hwc;
 592                 } else {
 593                         LIST_INITHEAD(&private_output->layer_list);
 594                         LIST_INITHEAD(&private_output->layer_commit_handler_list);
 595                 }
 596         } else {
 597                 _tdm_display_destroy_caps_output(&private_output->caps);
 598                 ret = _tdm_display_update_caps_output(private_module, private_output->pipe, output_backend, &private_output->caps);
 599                 TDM_RETURN_VAL_IF_FAIL(ret == TDM_ERROR_NONE, ret);
 600
 601                 if (private_output->caps.status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 602                         private_output->current_mode = NULL;
 603         }
 604
 605         /* do not use the layer object when the tdm_output has the hwc capability */
 606         if ((private_output->caps.capabilities&TDM_OUTPUT_CAPABILITY_HWC) == 0) {
 607                 layers = func_output->output_get_layers(output_backend, &layer_count, &ret);
 608                 if (ret != TDM_ERROR_NONE) {
 609                         free(layers);
 610                         return ret;
 611                 }
 612
 613                 for (i = 0; i < layer_count; i++) {
 614                         ret = _tdm_display_update_layer(private_output, layers[i], i);
 615                         if (ret != TDM_ERROR_NONE) {
 616                                 free(layers);
 617                                 return ret;
 618                         }
 619                 }
 620
 621                 free(layers);
 622         }
 623
 624         if (output_created) {
 625                 ret = tdm_display_call_thread_cb_output_create(private_display, private_output);
 626                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 627         }
 628
 629         return TDM_ERROR_NONE;
 630 }
 631
 632 static void
 633 _tdm_display_set_main_first(tdm_output **outputs, int index)
 634 {
 635         tdm_output *output_tmp = NULL;
 636
 637         if (index == 0)
 638                 return;
 639
 640         output_tmp = outputs[0];
 641         outputs[0] = outputs[index];
 642         outputs[index] = output_tmp;
 643 }
 644
 645 static tdm_output **
 646 _tdm_display_get_ordered_outputs(tdm_private_module *private_module, int *count)
 647 {
 648         tdm_func_display *func_display = &private_module->func_display;
 649         tdm_output **outputs = NULL;
 650         tdm_output *output_dsi = NULL;
 651         tdm_output *output_lvds = NULL;
 652         tdm_output *output_hdmia = NULL;
 653         tdm_output *output_hdmib = NULL;
 654         int i, output_count = 0, output_connected_count = 0;
 655         int index_dsi = 0, index_lvds = 0, index_hdmia = 0, index_hdmib = 0;
 656         tdm_error ret;
 657
 658         /* don't change list order if not init time */
 659         if (private_module->outputs) {
 660                 TDM_ERR("can't change output order");
 661                 return private_module->outputs;
 662         }
 663
 664         outputs = func_display->display_get_outputs(private_module->bdata, &output_count, &ret);
 665         if (ret != TDM_ERROR_NONE)
 666                 goto no_output;
 667
 668         *count = output_count;
 669
 670         if (output_count == 0)
 671                 goto no_output;
 672         else if (output_count == 1) {
 673                 private_module->outputs = outputs;
 674                 return outputs;
 675         }
 676
 677         /* count connected outputs */
 678         for (i = 0; i < output_count; i++) {
 679                 tdm_func_output *func_output = &private_module->func_output;
 680                 tdm_caps_output caps;
 681                 memset(&caps, 0, sizeof(tdm_caps_output));
 682
 683                 ret = func_output->output_get_capability(outputs[i], &caps);
 684                 if (ret != TDM_ERROR_NONE) {
 685                         TDM_ERR("output_get_capability() failed");
 686                         goto no_output;
 687                 }
 688
 689                 if (caps.status == TDM_OUTPUT_CONN_STATUS_CONNECTED) {
 690                         output_connected_count++;
 691
 692                         switch (caps.type) {
 693                         case TDM_OUTPUT_TYPE_DSI:
 694                                 output_dsi = outputs[i];
 695                                 index_dsi = i;
 696                                 break;
 697                         case TDM_OUTPUT_TYPE_LVDS:
 698                                 output_lvds = outputs[i];
 699                                 index_lvds = i;
 700                                 break;
 701                         case TDM_OUTPUT_TYPE_HDMIA:
 702                                 output_hdmia = outputs[i];
 703                                 index_hdmia = i;
 704                                 break;
 705                         case TDM_OUTPUT_TYPE_HDMIB:
 706                                 output_hdmib = outputs[i];
 707                                 index_hdmib = i;
 708                                 break;
 709                         default:
 710                                 break;
 711                         }
 712                 }
 713
 714                 _tdm_display_destroy_caps_output(&caps);
 715         }
 716
 717         /* ordering : main output is first */
 718         /* If there is no connected output, lvds or dsi cannot be main display. (cannot connect after booting)
 719           * But hdmi is possible, so set hdmi to main display.
 720           * If connected only one output, it is main output.
 721           * If connected outputs over 2, has priority like below.
 722           * (dsi > lvds > hdmi > else)
 723           */
 724         if (output_connected_count == 0) {
 725                 /* hdmi > dsi > lvds > else */
 726                 if (output_hdmia != NULL)
 727                         _tdm_display_set_main_first(outputs, index_hdmia);
 728                 else if (output_hdmib != NULL)
 729                         _tdm_display_set_main_first(outputs, index_hdmib);
 730                 else if (output_dsi != NULL)
 731                         _tdm_display_set_main_first(outputs, index_dsi);
 732                 else if (output_lvds != NULL)
 733                         _tdm_display_set_main_first(outputs, index_lvds);
 734         } else { /* (output_connected_count > 1) */
 735                 /* dsi > lvds > hdmi > else */
 736                 if (output_dsi != NULL)
 737                         _tdm_display_set_main_first(outputs, index_dsi);
 738                 else if (output_lvds != NULL)
 739                         _tdm_display_set_main_first(outputs, index_lvds);
 740                 else if (output_hdmia != NULL)
 741                         _tdm_display_set_main_first(outputs, index_hdmia);
 742                 else if (output_hdmib != NULL)
 743                         _tdm_display_set_main_first(outputs, index_hdmib);
 744         }
 745
 746         private_module->outputs = outputs;
 747
 748         return outputs;
 749
 750 no_output:
 751         free(outputs);
 752         *count = 0;
 753         return NULL;
 754 }
 755
 756 static tdm_error
 757 _tdm_display_setup(tdm_private_display *private_display)
 758 {
 759         tdm_private_module *private_module = NULL;
 760         tdm_error ret = TDM_ERROR_NONE;
 761         int output_count = 0;
 762         int virtual = 0;
 763
 764         if (private_display->pp_module) {
 765                 ret = _tdm_display_update_caps_pp(private_display->pp_module,
 766                                                                                   &private_display->pp_module->caps_pp);
 767                 if (ret != TDM_ERROR_NONE)
 768                         goto failed_update;
 769         }
 770
 771         if (private_display->capture_module) {
 772                 ret = _tdm_display_update_caps_capture(private_display->capture_module,
 773                                                                                            &private_display->capture_module->caps_capture);
 774                 if (ret != TDM_ERROR_NONE)
 775                         goto failed_update;
 776         }
 777
 778         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
 779                 tdm_output **outputs;
 780                 int i, count = 0;
 781
 782                 outputs = _tdm_display_get_ordered_outputs(private_module, &count);
 783
 784                 if (count > 0)
 785                         TDM_GOTO_IF_FAIL(outputs != NULL, failed_update);
 786
 787                 for (i = 0; i < count; i++) {
 788                         ret = tdm_display_update_output(private_module, outputs[i]);
 789                         if (ret != TDM_ERROR_NONE)
 790                                 goto failed_update;
 791                         output_count++;
 792                 }
 793         }
 794
 795         /* At least, the output count should be greater than 0 to ensure tdm_vblank works.
 796          * So we will create a dummy output when backends don't have any output.
 797          * Without destroying a tdm_output object, this dummy output will be replaced with
 798          * a virtual output which is created in runtime.
 799          */
 800         if (output_count == 0) {
 801                 tdm_output **outputs;
 802                 int i, count = 0;
 803
 804                 TDM_INFO("loading a %s backend", TDM_DUMMY_MODULE);
 805                 ret = _tdm_display_load_module_with_file(private_display, TDM_DUMMY_MODULE);
 806                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, failed_update);
 807                 TDM_GOTO_IF_FAIL(private_display->dummy_module != NULL, failed_update);
 808
 809                 private_module = private_display->dummy_module;
 810
 811                 outputs = _tdm_display_get_ordered_outputs(private_module, &count);
 812                 TDM_GOTO_IF_FAIL(count > 0, failed_update);
 813                 TDM_GOTO_IF_FAIL(outputs != NULL, failed_update);
 814
 815                 for (i = 0; i < count; i++) {
 816                         ret = tdm_display_update_output(private_module, outputs[i]);
 817                         if (ret != TDM_ERROR_NONE)
 818                                 goto failed_update;
 819                 }
 820         }
 821
 822         virtual = tdm_config_get_int(TDM_CONFIG_KEY_GENERAL_VIRTUAL_OUTPUT, 0);
 823         if (virtual) {
 824                 TDM_INFO("loading a %s backend", TDM_VIRTUAL_MODULE);
 825                 ret = _tdm_display_load_module_with_file(private_display, TDM_VIRTUAL_MODULE);
 826                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, failed_update);
 827                 TDM_GOTO_IF_FAIL(private_display->virtual_module != NULL, failed_update);
 828         }
 829
 830         return TDM_ERROR_NONE;
 831
 832 failed_update:
 833         _tdm_display_destroy_private_display(private_display);
 834         return ret;
 835 }
 836 /* LCOV_EXCL_STOP */
 837
 838 EXTERN tdm_error
 839 tdm_display_update(tdm_display *dpy)
 840 {
 841         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, TDM_ERROR_INVALID_PARAMETER);
 842
 843         TDM_DEPRECATED(NULL);
 844
 845         return TDM_ERROR_NONE;
 846 }
 847
 848 int tdm_debug_module;
 849 int tdm_debug_dump;
 850 int tdm_ttrace_module;
 851 int tdm_ttrace_output;
 852
 853 static tdm_private_display *g_private_display;
 854 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 855
 856 /* LCOV_EXCL_START */
 857 static tdm_error
 858 _tdm_display_check_module(tdm_backend_module *module)
 859 {
 860         int tdm_backend_major, tdm_backend_minor;
 861         int backend_module_major, backend_module_minor;
 862
 863         tdm_backend_major = TDM_BACKEND_GET_ABI_MAJOR(TDM_BACKEND_ABI_LATEST_VERSION);
 864         tdm_backend_minor = TDM_BACKEND_GET_ABI_MINOR(TDM_BACKEND_ABI_LATEST_VERSION);
 865
 866         TDM_INFO("TDM Backend ABI version : %d.%d",
 867                          tdm_backend_major, tdm_backend_minor);
 868
 869         if (!module->name) {
 870                 TDM_ERR("TDM backend doesn't have name");
 871                 return TDM_ERROR_BAD_MODULE;
 872         }
 873
 874         if (!module->vendor) {
 875                 TDM_ERR("TDM backend doesn't have vendor");
 876                 return TDM_ERROR_BAD_MODULE;
 877         }
 878
 879         backend_module_major = TDM_BACKEND_GET_ABI_MAJOR(module->abi_version);
 880         backend_module_minor = TDM_BACKEND_GET_ABI_MINOR(module->abi_version);
 881
 882         TDM_INFO("TDM module name: %s", module->name);
 883         TDM_INFO("'%s' vendor: %s", module->name, module->vendor);
 884         TDM_INFO("'%s' backend ABI version: %d.%d", module->name, backend_module_major, backend_module_minor);
 885
 886         if (backend_module_major > tdm_backend_major) {
 887                 TDM_ERR("'%s' major version(%d) is newer than %d",
 888                                 module->name, backend_module_major, tdm_backend_major);
 889                 return TDM_ERROR_BAD_MODULE;
 890         }
 891
 892         if (tdm_backend_major == backend_module_major &&
 893                 backend_module_minor > tdm_backend_minor) {
 894                 TDM_ERR("'%s' minor version(%d) is newer than %d",
 895                                 module->name, backend_module_minor, tdm_backend_minor);
 896                 return TDM_ERROR_BAD_MODULE;
 897         }
 898
 899         if (!module->init) {
 900                 TDM_ERR("'%s' doesn't have init function", module->name);
 901                 return TDM_ERROR_BAD_MODULE;
 902         }
 903
 904         if (!module->deinit) {
 905                 TDM_ERR("'%s' doesn't have deinit function", module->name);
 906                 return TDM_ERROR_BAD_MODULE;
 907         }
 908
 909         return TDM_ERROR_NONE;
 910 }
 911
 912 static tdm_error
 913 _tdm_display_check_backend_functions(tdm_private_module *private_module)
 914 {
 915         tdm_func_display *func_display = &private_module->func_display;
 916         tdm_func_output *func_output = &private_module->func_output;
 917         tdm_func_layer *func_layer = &private_module->func_layer;
 918         tdm_error ret;
 919
 920         /* below functions should be implemented in backend side */
 921
 922         TDM_RETURN_VAL_IF_FAIL(func_display != NULL, TDM_ERROR_BAD_MODULE);
 923         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capability, TDM_ERROR_BAD_MODULE);
 924         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_outputs, TDM_ERROR_BAD_MODULE);
 925         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_capability, TDM_ERROR_BAD_MODULE);
 926         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_layers, TDM_ERROR_BAD_MODULE);
 927         TDM_RETURN_VAL_IF_FAIL(func_output->output_wait_vblank, TDM_ERROR_BAD_MODULE);
 928         TDM_RETURN_VAL_IF_FAIL(func_output->output_set_vblank_handler, TDM_ERROR_BAD_MODULE);
 929         TDM_RETURN_VAL_IF_FAIL(func_output->output_commit, TDM_ERROR_BAD_MODULE);
 930         TDM_RETURN_VAL_IF_FAIL(func_output->output_set_commit_handler, TDM_ERROR_BAD_MODULE);
 931         TDM_RETURN_VAL_IF_FAIL(func_output->output_set_mode, TDM_ERROR_BAD_MODULE);
 932         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_capability, TDM_ERROR_BAD_MODULE);
 933         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_set_info, TDM_ERROR_BAD_MODULE);
 934         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_info, TDM_ERROR_BAD_MODULE);
 935         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_set_buffer, TDM_ERROR_BAD_MODULE);
 936         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_unset_buffer, TDM_ERROR_BAD_MODULE);
 937
 938         ret = func_display->display_get_capability(private_module->bdata, &private_module->caps_display);
 939         if (ret != TDM_ERROR_NONE) {
 940                 TDM_ERR("display_get_capability() failed");
 941                 return TDM_ERROR_BAD_MODULE;
 942         }
 943
 944         if (private_module->capabilities & TDM_DISPLAY_CAPABILITY_PP) {
 945                 tdm_func_pp *func_pp = &private_module->func_pp;
 946                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_pp_capability, TDM_ERROR_BAD_MODULE);
 947                 TDM_RETURN_VAL_IF_FAIL(func_display->display_create_pp, TDM_ERROR_BAD_MODULE);
 948                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_destroy, TDM_ERROR_BAD_MODULE);
 949                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_commit, TDM_ERROR_BAD_MODULE);
 950                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_set_done_handler, TDM_ERROR_BAD_MODULE);
 951         }
 952
 953         if (private_module->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE) {
 954                 tdm_func_capture *func_capture = &private_module->func_capture;
 955                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capture_capability, TDM_ERROR_BAD_MODULE);
 956                 if (private_module->caps_capture.capabilities & TDM_CAPTURE_CAPABILITY_OUTPUT)
 957                         TDM_RETURN_VAL_IF_FAIL(func_output->output_create_capture, TDM_ERROR_BAD_MODULE);
 958                 if (private_module->caps_capture.capabilities & TDM_CAPTURE_CAPABILITY_LAYER)
 959                         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_create_capture, TDM_ERROR_BAD_MODULE);
 960                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_destroy, TDM_ERROR_BAD_MODULE);
 961                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_commit, TDM_ERROR_BAD_MODULE);
 962                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_set_done_handler, TDM_ERROR_BAD_MODULE);
 963         }
 964
 965         return TDM_ERROR_NONE;
 966 }
 967
 968 static tdm_error
 969 _tdm_display_load_module_with_file(tdm_private_display *private_display,
 970                                                                    const char *file)
 971 {
 972         char path[TDM_PATH_LEN] = {0,};
 973         void *module = NULL;
 974         tdm_backend_module *module_data;
 975         tdm_backend_data *bdata = NULL;
 976         tdm_private_module *private_module = NULL;
 977         tdm_error ret;
 978         double stamp;
 979         int size;
 980
 981         size = snprintf(path, sizeof(path), TDM_MODULE_PATH "/%s", file);
 982         if (size >= (int)sizeof(path)) {
 983                 TDM_WRN("too long: %s/%s", TDM_MODULE_PATH, file);
 984                 return TDM_ERROR_BAD_MODULE;
 985         };
 986
 987         private_module = calloc(1, sizeof *private_module);
 988         if (!private_module) {
 989                 TDM_ERR("alloc failed: %m");
 990                 ret = TDM_ERROR_OUT_OF_MEMORY;
 991                 goto failed_load;
 992         }
 993
 994         private_module->private_display = private_display;
 995
 996         stamp = tdm_helper_get_time();
 997
 998         TDM_TRACE_BEGIN("TDM_Load_Backend");
 999         module = dlopen(path, RTLD_LAZY);
1000         if (!module) {
1001                 TDM_ERR("%s", dlerror());
1002                 TDM_TRACE_END();
1003                 ret = TDM_ERROR_NO_MODULE;
1004                 goto failed_load;
1005         }
1006
1007         private_module->module = module;
1008
1009         module_data = dlsym(module, "tdm_backend_module_data");
1010         if (!module_data) {
1011                 TDM_ERR("'%s' doesn't have data object", file);
1012                 ret = TDM_ERROR_BAD_MODULE;
1013                 TDM_TRACE_END();
1014                 goto failed_load;
1015         }
1016         TDM_TRACE_END();
1017
1018         private_module->module_data = module_data;
1019
1020         TDM_DBG("dlopen, dlsym time: %.3f ms", (tdm_helper_get_time() - stamp) * 1000.0);
1021
1022         /* check if version, init() and deinit() are valid or not */
1023         ret = _tdm_display_check_module(module_data);
1024         if (ret != TDM_ERROR_NONE) {
1025                 TDM_ERR("backend(%s) load failed: check module error", module_data->name);
1026                 goto failed_load;
1027         }
1028
1029         private_display->current_module = private_module;
1030
1031         /* We don't care if backend_data is NULL or not. It's up to backend. */
1032         TDM_TRACE_BEGIN("TDM_Init_Backend");
1033         stamp = tdm_helper_get_time();
1034         bdata = module_data->init((tdm_display *)private_display, &ret);
1035         TDM_DBG("backend init() time: %.3f ms", (tdm_helper_get_time() - stamp) * 1000.0);
1036         TDM_TRACE_END();
1037
1038         private_display->current_module = NULL;
1039
1040         if (!strncmp(file, TDM_DUMMY_MODULE, TDM_NAME_LEN))
1041                 private_display->dummy_module = private_module;
1042
1043         if (!strncmp(file, TDM_VIRTUAL_MODULE, TDM_NAME_LEN))
1044                 private_display->virtual_module = private_module;
1045
1046         private_module->bdata = bdata;
1047
1048         if (ret != TDM_ERROR_NONE) {
1049                 TDM_ERR("backend(%s) load failed: init error", module_data->name);
1050                 goto failed_load;
1051         }
1052
1053         ret = _tdm_display_check_backend_functions(private_module);
1054         if (ret != TDM_ERROR_NONE) {
1055                 TDM_ERR("backend(%s) load failed: check functions error", module_data->name);
1056                 goto failed_load;
1057         }
1058
1059         LIST_INITHEAD(&private_module->output_list);
1060         LIST_INITHEAD(&private_module->voutput_list);
1061         LIST_INITHEAD(&private_module->pp_list);
1062         LIST_INITHEAD(&private_module->capture_list);
1063
1064         LIST_ADDTAIL(&private_module->link, &private_display->module_list);
1065
1066         TDM_INFO("Success to load '%s' module", module_data->name);
1067
1068         return TDM_ERROR_NONE;
1069 failed_load:
1070         if (bdata)
1071                 module_data->deinit(bdata);
1072         if (module)
1073                 dlclose(module);
1074         if (private_module)
1075                 free(private_module);
1076         return ret;
1077 }
1078
1079 static tdm_error
1080 _tdm_display_load_modules(tdm_private_display *private_display)
1081 {
1082         const char *module_names;
1083         tdm_error ret = TDM_ERROR_NONE;
1084         char temp[TDM_PATH_LEN];
1085         char *arg;
1086         char *end;
1087
1088         LIST_INITHEAD(&private_display->module_list);
1089
1090         module_names = tdm_config_get_string(TDM_CONFIG_KEY_GENERAL_BACKENDS, TDM_DEFAULT_MODULE);
1091
1092         snprintf(temp, TDM_PATH_LEN, "%s", module_names);
1093
1094         arg = strtok_r(temp, TDM_CONFIG_DELIM, &end);
1095         while (arg) {
1096                 TDM_INFO("loading a %s backend", arg);
1097                 ret = _tdm_display_load_module_with_file(private_display, arg);
1098                 if (ret == TDM_ERROR_NONE)
1099                         TDM_INFO("%s backend loading success", arg);
1100                 else
1101                         TDM_INFO("%s backend loading failed", arg);
1102                 arg = strtok_r(NULL, TDM_CONFIG_DELIM, &end);
1103         }
1104
1105         return ret;
1106 }
1107
1108 static void
1109 _tdm_display_unload_modules(tdm_private_display *private_display)
1110 {
1111         tdm_private_module *private_module = NULL, *bb = NULL;
1112
1113         LIST_FOR_EACH_ENTRY_SAFE(private_module, bb, &private_display->module_list, link) {
1114                 LIST_DEL(&private_module->link);
1115
1116                 if (private_module->module_data)
1117                         private_module->module_data->deinit(private_module->bdata);
1118                 if (private_module->module)
1119                         dlclose(private_module->module);
1120
1121                 free(private_module);
1122         }
1123 }
1124 /* LCOV_EXCL_STOP */
1125
1126 INTERN void *
1127 tdm_display_find_stamp(tdm_private_display *private_display, double stamp)
1128 {
1129         return (void*)g_private_display;
1130 }
1131
1132 EXTERN tdm_display *
1133 tdm_display_init(tdm_error *error)
1134 {
1135         tdm_private_display *private_display = NULL;
1136         const char *str;
1137         tdm_error ret;
1138         double stamp1, stamp2, start;
1139         int mode;
1140
1141         pthread_mutex_lock(&gLock);
1142
1143         if (g_private_display) {
1144                 g_private_display->init_count++;
1145                 pthread_mutex_unlock(&gLock);
1146                 if (error)
1147                         *error = TDM_ERROR_NONE;
1148                 return g_private_display;
1149         }
1150
1151         start = stamp1 = tdm_helper_get_time();
1152
1153         private_display = calloc(1, sizeof(tdm_private_display));
1154         if (!private_display) {
1155                 /* LCOV_EXCL_START */
1156                 ret = TDM_ERROR_OUT_OF_MEMORY;
1157                 TDM_ERR("'private_display != NULL' failed");
1158                 goto failed_alloc;
1159                 /* LCOV_EXCL_STOP */
1160         }
1161
1162         private_display->stamp = tdm_helper_get_time();
1163
1164         LIST_INITHEAD(&private_display->output_create_handler_list);
1165
1166         str = tdm_config_get_string(TDM_CONFIG_KEY_DEBUG_MODULE, NULL);
1167         if (str)
1168                 tdm_display_enable_debug_module(str);
1169
1170         str = tdm_config_get_string(TDM_CONFIG_KEY_DEBUG_DUMP, NULL);
1171         if (str)
1172                 tdm_display_enable_dump(private_display, str, NULL, NULL);
1173
1174         if (pthread_mutex_init(&private_display->lock, NULL)) {
1175                 /* LCOV_EXCL_START */
1176                 ret = TDM_ERROR_OPERATION_FAILED;
1177                 TDM_ERR("mutex init failed: %m");
1178                 goto failed_mutex_init;
1179                 /* LCOV_EXCL_STOP */
1180         }
1181
1182         _pthread_mutex_lock(&private_display->lock);
1183
1184         stamp2 = tdm_helper_get_time();
1185         TDM_DBG("prepare init time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1186         stamp1 = stamp2;
1187
1188         ret = tdm_event_loop_init(private_display);
1189         if (ret != TDM_ERROR_NONE)
1190                 goto failed_event;
1191
1192         stamp2 = tdm_helper_get_time();
1193         TDM_INFO("event loop init time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1194         stamp1 = stamp2;
1195
1196         ret = tdm_vblank_init(private_display);
1197         if (ret != TDM_ERROR_NONE)
1198                 goto failed_vblank;
1199
1200         ret = tdm_output_init(private_display);
1201         if (ret != TDM_ERROR_NONE)
1202                 goto failed_load;
1203
1204         ret = tdm_hwc_init(private_display);
1205         if (ret != TDM_ERROR_NONE)
1206                 goto failed_load;
1207
1208         ret = tdm_pp_init(private_display);
1209         if (ret != TDM_ERROR_NONE)
1210                 goto failed_load;
1211
1212         ret = tdm_capture_init(private_display);
1213         if (ret != TDM_ERROR_NONE)
1214                 goto failed_load;
1215
1216         ret = _tdm_display_load_modules(private_display);
1217         if (!(ret == TDM_ERROR_NONE || ret == TDM_ERROR_NO_MODULE))
1218                 goto failed_load;
1219
1220         stamp2 = tdm_helper_get_time();
1221         TDM_INFO("loading backend time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1222         stamp1 = stamp2;
1223
1224 #ifdef INIT_BUFMGR
1225         int tdm_drm_fd = tdm_helper_get_fd("TDM_DRM_MASTER_FD");
1226         if (tdm_drm_fd >= 0) {
1227                 private_display->bufmgr = tbm_bufmgr_init(tdm_drm_fd);
1228                 close(tdm_drm_fd);
1229                 if (!private_display->bufmgr) {
1230                         TDM_ERR("tbm_bufmgr_init failed");
1231                         goto failed_update;
1232                 } else {
1233                         TDM_INFO("tbm_bufmgr_init successed");
1234                 }
1235
1236                 stamp2 = tdm_helper_get_time();
1237                 TDM_DBG("initializing bufmgr time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1238                 stamp1 = stamp2;
1239         }
1240 #endif
1241
1242         TDM_TRACE_BEGIN("TDM_Update_Display");
1243         ret = _tdm_display_setup(private_display);
1244         TDM_TRACE_END();
1245         if (ret != TDM_ERROR_NONE)
1246                 goto failed_update;
1247
1248         stamp2 = tdm_helper_get_time();
1249         TDM_DBG("updating display time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1250         stamp1 = stamp2;
1251
1252         tdm_event_loop_create_backend_source(private_display);
1253
1254         private_display->init_count = 1;
1255         g_private_display = private_display;
1256
1257         /* the COMMIT_PER_VBLANK functionality is ability of an output to support
1258          * several operational modes (commit_per_vblank modes) related to tdm_commit;
1259          * this functionality can be turned off which means a default mode */
1260         mode = tdm_config_get_int(TDM_CONFIG_KEY_GENERAL_COMMIT_PER_VBLANK, 0);
1261         if (mode > 0) {
1262                 tdm_private_module *b = NULL;
1263                 tdm_private_output *o = NULL;
1264
1265                 /* outputs which support hwc capability can work only
1266                  * if commit_per_vblank mode is '0' (default mode) */
1267                 LIST_FOR_EACH_ENTRY(b, &private_display->module_list, link) {
1268                         LIST_FOR_EACH_ENTRY(o, &b->output_list, link) {
1269                                 if (!(o->caps.capabilities & TDM_OUTPUT_CAPABILITY_HWC))
1270                                         tdm_output_choose_commit_per_vblank_mode(o, mode);
1271                         }
1272                 }
1273         }
1274
1275         if (error)
1276                 *error = TDM_ERROR_NONE;
1277
1278         tdm_thread_cb_set_find_func(TDM_THREAD_CB_DISPLAY_OUTPUT_CREATE, tdm_display_find_stamp);
1279
1280         _pthread_mutex_unlock(&private_display->lock);
1281         pthread_mutex_unlock(&gLock);
1282
1283         TDM_INFO("init time: %.3f ms", (tdm_helper_get_time() - start) * 1000.0);
1284
1285         return (tdm_display *)private_display;
1286
1287 /* LCOV_EXCL_START */
1288 failed_update:
1289         _tdm_display_unload_modules(private_display);
1290 failed_load:
1291         tdm_vblank_deinit(private_display);
1292 failed_vblank:
1293         tdm_event_loop_stop(private_display);
1294         tdm_event_loop_deinit(private_display);
1295 failed_event:
1296         _pthread_mutex_unlock(&private_display->lock);
1297         pthread_mutex_destroy(&private_display->lock);
1298 failed_mutex_init:
1299         free(private_display);
1300 failed_alloc:
1301         if (error)
1302                 *error = ret;
1303         pthread_mutex_unlock(&gLock);
1304         return NULL;
1305 /* LCOV_EXCL_STOP */
1306 }
1307
1308 EXTERN void
1309 tdm_display_deinit(tdm_display *dpy)
1310 {
1311         tdm_private_display *private_display = dpy;
1312
1313         if (!private_display)
1314                 return;
1315
1316         pthread_mutex_lock(&gLock);
1317
1318         private_display->init_count--;
1319         if (private_display->init_count > 0) {
1320                 pthread_mutex_unlock(&gLock);
1321                 return;
1322         }
1323
1324         /* dont move the position of lock/unlock. all resource should be protected
1325          * during destroying. after tdm_event_loop_deinit, we don't worry about thread
1326          * things because it's finalized.
1327          */
1328         _pthread_mutex_lock(&private_display->lock);
1329         tdm_event_loop_stop(private_display);
1330         _pthread_mutex_unlock(&private_display->lock);
1331
1332         tdm_event_loop_deinit(private_display);
1333
1334         /* when private_output is destroyed, all vblank resources of client and server
1335          * are destroyed. Then we can call tdm_vblank_deinit. After destroying display,
1336          * we can unload backend modulues.
1337          */
1338         _tdm_display_destroy_private_display(private_display);
1339         _tdm_display_unload_modules(private_display);
1340
1341         tdm_vblank_deinit(private_display);
1342
1343 #ifdef INIT_BUFMGR
1344         if (private_display->bufmgr)
1345                 tbm_bufmgr_deinit(private_display->bufmgr);
1346 #endif
1347
1348         tbm_drm_helper_unset_tbm_master_fd();
1349
1350         pthread_mutex_destroy(&private_display->lock);
1351         free(private_display);
1352         g_private_display = NULL;
1353
1354         if (tdm_debug_dump_dir) {
1355                 free(tdm_debug_dump_dir);
1356                 tdm_debug_dump_dir = NULL;
1357         }
1358
1359         tdm_config_deinit();
1360
1361         pthread_mutex_unlock(&gLock);
1362
1363         TDM_INFO("done");
1364 }
1365
1366 INTERN tdm_private_display *
1367 tdm_display_get(void)
1368 {
1369         return g_private_display;
1370 }
1371