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         int mutex_locked = 0;
 266
 267         ret = tdm_output_call_thread_cb_destroy(private_output);
 268         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 269
 270         free(private_output->layers_ptr);
 271
 272         if (private_output->vblank_timeout_timer)
 273                 tdm_event_loop_source_remove(private_output->vblank_timeout_timer);
 274
 275         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &private_output->vblank_handler_list, link) {
 276                 LIST_DEL(&v->link);
 277                 free(v);
 278         }
 279
 280         LIST_FOR_EACH_ENTRY_SAFE(om, omm, &private_output->output_commit_handler_list, link) {
 281                 LIST_DEL(&om->link);
 282                 free(om);
 283         }
 284
 285         if (private_output->private_hwc) {
 286                 private_hwc = private_output->private_hwc;
 287                 LIST_FOR_EACH_ENTRY_SAFE(hm, hmm, &private_hwc->hwc_commit_handler_list, link) {
 288                         LIST_DEL(&hm->link);
 289                         free(hm);
 290                 }
 291         } else {
 292                 LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &private_output->layer_commit_handler_list, link) {
 293                         LIST_DEL(&lm->link);
 294                         free(lm);
 295                 }
 296         }
 297
 298         LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &private_output->pending_commit_handler_list, link) {
 299                 LIST_DEL(&lm->link);
 300                 free(lm);
 301         }
 302
 303         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list, link) {
 304                 LIST_DEL(&h->link);
 305                 tdm_thread_cb_remove(h->private_output, TDM_THREAD_CB_OUTPUT_DPMS, NULL, tdm_output_thread_cb_change, h);
 306                 tdm_thread_cb_remove(h->private_output, TDM_THREAD_CB_OUTPUT_STATUS, NULL, tdm_output_thread_cb_change, h);
 307                 free(h);
 308         }
 309
 310         LIST_FOR_EACH_ENTRY_SAFE(dh, dhh, &private_output->destroy_handler_list, link) {
 311                 LIST_DEL(&dh->link);
 312                 tdm_thread_cb_remove(dh->private_output, TDM_THREAD_CB_OUTPUT_DESTROY, NULL, tdm_output_thread_cb_destroy, dh);
 313                 free(dh);
 314         }
 315
 316         if (tdm_thread_is_running() && TDM_MUTEX_IS_LOCKED()) mutex_locked = 1;
 317         if (private_output->vblank) {
 318                 /* tdm_vblank APIs is for server. it should be called in unlock status*/
 319                 if (mutex_locked) _pthread_mutex_unlock(&private_display->lock);
 320                 tdm_vblank_destroy(private_output->vblank);
 321                 if (mutex_locked) _pthread_mutex_lock(&private_display->lock);
 322         }
 323
 324         if (private_output->ttrace_vblank) {
 325                 /* tdm_vblank APIs is for server. it should be called in unlock status*/
 326                 if (mutex_locked) _pthread_mutex_unlock(&private_display->lock);
 327                 tdm_vblank_destroy(private_output->ttrace_vblank);
 328                 if (mutex_locked) _pthread_mutex_lock(&private_display->lock);
 329         }
 330
 331         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &private_output->capture_list, link)
 332                 tdm_capture_destroy_internal(c);
 333
 334         if (private_output->private_hwc) {
 335                 private_hwc = private_output->private_hwc;
 336                 LIST_FOR_EACH_ENTRY_SAFE(hw, hww, &private_hwc->hwc_window_list, link)
 337                         tdm_hwc_window_destroy_internal(hw);
 338                 if (private_hwc->display_target_buffer)
 339                         tbm_surface_internal_unref(private_hwc->display_target_buffer);
 340                 free(private_hwc);
 341         } else {
 342                 LIST_FOR_EACH_ENTRY_SAFE(l, ll, &private_output->layer_list, link)
 343                         _tdm_display_destroy_private_layer(l);
 344         }
 345
 346         _tdm_display_destroy_caps_output(&private_output->caps);
 347
 348         /* when destroying output, vblank objects are also destroyed. vblank checks
 349          * if output object is valid. So delete the output's link at last.
 350          */
 351         LIST_DEL(&private_output->link);
 352
 353         private_output->stamp = 0;
 354         free(private_output);
 355 }
 356
 357 static void
 358 _tdm_display_destroy_private_display(tdm_private_display *private_display)
 359 {
 360         tdm_private_module *private_module = NULL, *bb = NULL;
 361         tdm_private_output *o = NULL, *oo = NULL;
 362         tdm_private_pp *p = NULL, *pp = NULL;
 363         tdm_private_output_create_handler *ch = NULL, *chh = NULL;
 364
 365         LIST_FOR_EACH_ENTRY_SAFE(private_module, bb, &private_display->module_list, link) {
 366                 LIST_FOR_EACH_ENTRY_SAFE(p, pp, &private_module->pp_list, link) {
 367                         tdm_pp_destroy_internal(p);
 368                 }
 369
 370                 LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_module->output_list, link) {
 371                         tdm_display_destroy_private_output(o);
 372                 }
 373
 374                 _tdm_display_destroy_caps_pp(&private_module->caps_pp);
 375                 _tdm_display_destroy_caps_capture(&private_module->caps_capture);
 376
 377                 private_module->capabilities = 0;
 378                 private_module->caps_display.max_layer_count = 0;
 379
 380                 if (private_module->outputs) {
 381                         free(private_module->outputs);
 382                         private_module->outputs = NULL;
 383                 }
 384         }
 385
 386         LIST_FOR_EACH_ENTRY_SAFE(ch, chh, &private_display->output_create_handler_list, link) {
 387                 LIST_DEL(&ch->link);
 388                 tdm_thread_cb_remove(ch->private_display, TDM_THREAD_CB_DISPLAY_OUTPUT_CREATE, NULL,
 389                                                          tdm_display_thread_cb_output_create, ch);
 390                 free(ch);
 391         }
 392 }
 393
 394 static tdm_error
 395 _tdm_display_update_caps_pp(tdm_private_module *private_module, tdm_caps_pp *caps)
 396 {
 397         tdm_func_display *func_display;
 398         tdm_error ret;
 399
 400         func_display = &private_module->func_display;
 401
 402         if (!func_display->display_get_pp_capability) {
 403                 TDM_ERR("backend(%s) no display_get_pp_capability()", private_module->module_data->name);
 404                 return TDM_ERROR_BAD_MODULE;
 405         }
 406
 407         memset(caps, 0, sizeof(tdm_caps_pp));
 408
 409         ret = func_display->display_get_pp_capability(private_module->bdata, caps);
 410         if (ret != TDM_ERROR_NONE) {
 411                 TDM_ERR("backend(%s) display_get_pp_capability() failed", private_module->module_data->name);
 412                 return TDM_ERROR_BAD_MODULE;
 413         }
 414
 415         return TDM_ERROR_NONE;
 416 }
 417
 418 static tdm_error
 419 _tdm_display_update_caps_capture(tdm_private_module *private_module, tdm_caps_capture *caps)
 420 {
 421         tdm_func_display *func_display;
 422         tdm_error ret;
 423
 424         func_display = &private_module->func_display;
 425
 426         if (!func_display->display_get_capture_capability) {
 427                 TDM_ERR("backend(%s) no display_get_capture_capability()", private_module->module_data->name);
 428                 return TDM_ERROR_BAD_MODULE;
 429         }
 430
 431         ret = func_display->display_get_capture_capability(private_module->bdata, caps);
 432         if (ret != TDM_ERROR_NONE) {
 433                 TDM_ERR("backend(%s) display_get_capture_capability() failed", private_module->module_data->name);
 434                 return TDM_ERROR_BAD_MODULE;
 435         }
 436
 437         return TDM_ERROR_NONE;
 438 }
 439
 440 static tdm_error
 441 _tdm_display_update_caps_layer(tdm_private_module *private_module,
 442                                                            tdm_layer *layer_backend, tdm_caps_layer *caps)
 443 {
 444         tdm_func_layer *func_layer = &private_module->func_layer;
 445         tdm_error ret;
 446
 447         if (!func_layer->layer_get_capability) {
 448                 TDM_ERR("backend(%s) no layer_get_capability()", private_module->module_data->name);
 449                 return TDM_ERROR_BAD_MODULE;
 450         }
 451
 452         ret = func_layer->layer_get_capability(layer_backend, caps);
 453         if (ret != TDM_ERROR_NONE) {
 454                 TDM_ERR("backend(%s) layer_get_capability() failed", private_module->module_data->name);
 455                 return TDM_ERROR_BAD_MODULE;
 456         }
 457
 458         return TDM_ERROR_NONE;
 459 }
 460
 461 static tdm_error
 462 _tdm_display_update_caps_output(tdm_private_module *private_module, int pipe,
 463                                                                 tdm_output *output_backend, tdm_caps_output *caps)
 464 {
 465         tdm_func_output *func_output = &private_module->func_output;
 466         char temp[TDM_NAME_LEN];
 467         tdm_error ret;
 468         double stamp;
 469         int n;
 470
 471         stamp = tdm_helper_get_time();
 472         ret = func_output->output_get_capability(output_backend, caps);
 473         TDM_DBG("backend(%s) backend output_get_capability() time: %.3f ms",
 474                         private_module->module_data->name, (tdm_helper_get_time() - stamp) * 1000.0);
 475
 476         if (ret != TDM_ERROR_NONE) {
 477                 TDM_ERR("backend(%s) output_get_capability() failed", private_module->module_data->name);
 478                 return TDM_ERROR_BAD_MODULE;
 479         }
 480
 481         /* FIXME: Use model for tdm client to distinguish amoung outputs */
 482         n = snprintf(temp, sizeof(temp), "%s-%d", caps->model, pipe);
 483         if ((size_t)n >= sizeof(temp)) {
 484                  temp[sizeof(temp) - 1] = '\0';
 485         }
 486
 487         snprintf(caps->model, TDM_NAME_LEN, "%s", temp);
 488
 489         return TDM_ERROR_NONE;
 490 }
 491
 492 static tdm_error
 493 _tdm_display_update_layer(tdm_private_output *private_output,
 494                                                   tdm_layer *layer_backend, int index)
 495 {
 496         tdm_private_layer *private_layer;
 497         tdm_error ret;
 498
 499         private_layer = _tdm_display_find_private_layer(private_output, layer_backend);
 500         if (!private_layer) {
 501                 private_layer = calloc(1, sizeof(tdm_private_layer));
 502                 TDM_RETURN_VAL_IF_FAIL(private_layer != NULL, TDM_ERROR_OUT_OF_MEMORY);
 503
 504                 LIST_ADDTAIL(&private_layer->link, &private_output->layer_list);
 505                 LIST_INITHEAD(&private_layer->capture_list);
 506
 507                 private_layer->index = index;
 508                 private_layer->private_module = private_output->private_module;
 509                 private_layer->private_display = private_output->private_display;
 510                 private_layer->private_output = private_output;
 511                 private_layer->layer_backend = layer_backend;
 512                 private_layer->usable = 1;
 513         }
 514
 515         _tdm_display_destroy_caps_layer(&private_layer->caps);
 516
 517         ret = _tdm_display_update_caps_layer(private_output->private_module, layer_backend, &private_layer->caps);
 518         TDM_RETURN_VAL_IF_FAIL(ret == TDM_ERROR_NONE, ret);
 519
 520         return TDM_ERROR_NONE;
 521 }
 522
 523 INTERN tdm_error
 524 tdm_display_update_output(tdm_private_module *private_module, tdm_output *output_backend)
 525 {
 526         tdm_func_output *func_output = &private_module->func_output;
 527         tdm_private_display *private_display = NULL;
 528         tdm_private_output *private_output = NULL;
 529         tdm_layer **layers = NULL;
 530         tdm_private_hwc *private_hwc = NULL;
 531         tdm_hwc *hwc;
 532         int layer_count = 0, i;
 533         tdm_error ret;
 534         unsigned int output_created = 0;
 535
 536         private_display = private_module->private_display;
 537
 538         private_output = tdm_display_find_private_output(private_display, output_backend);
 539         if (!private_output) {
 540                 unsigned int pipe = tdm_display_find_empty_output_pipe(private_display);
 541
 542                 private_output = calloc(1, sizeof(tdm_private_output));
 543                 TDM_RETURN_VAL_IF_FAIL(private_output != NULL, TDM_ERROR_OUT_OF_MEMORY);
 544
 545                 private_output->stamp = tdm_helper_get_time();
 546                 while (tdm_display_find_output_stamp(private_display, private_output->stamp))
 547                         private_output->stamp++;
 548
 549                 LIST_ADDTAIL(&private_output->link, &private_module->output_list);
 550
 551                 private_output->private_module = private_module;
 552                 private_output->private_display = private_display;
 553                 private_output->current_dpms_value = TDM_OUTPUT_DPMS_OFF;
 554                 private_output->output_backend = output_backend;
 555                 private_output->pipe = pipe;
 556                 private_output->index = pipe;
 557
 558                 LIST_INITHEAD(&private_output->capture_list);
 559                 LIST_INITHEAD(&private_output->vblank_handler_list);
 560                 LIST_INITHEAD(&private_output->output_commit_handler_list);
 561                 LIST_INITHEAD(&private_output->pending_commit_handler_list);
 562                 LIST_INITHEAD(&private_output->destroy_handler_list);
 563                 LIST_INITHEAD(&private_output->change_handler_list);
 564                 LIST_INITHEAD(&private_output->mode_change_request_handler_list);
 565
 566                 if (func_output->output_set_status_handler) {
 567                         func_output->output_set_status_handler(private_output->output_backend,
 568                                                                                                    tdm_output_cb_status,
 569                                                                                                    private_output);
 570                         private_output->regist_change_cb = 1;
 571                 }
 572
 573                 output_created = 1;
 574
 575                 /* NOTE that output modes will be allocated newly after here */
 576                 _tdm_display_destroy_caps_output(&private_output->caps);
 577                 ret = _tdm_display_update_caps_output(private_module, private_output->pipe, output_backend, &private_output->caps);
 578                 TDM_RETURN_VAL_IF_FAIL(ret == TDM_ERROR_NONE, ret);
 579
 580                 if (private_output->caps.status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 581                         private_output->current_mode = NULL;
 582
 583                 /* get the tdm_hwc object */
 584                 if (private_output->caps.capabilities&TDM_OUTPUT_CAPABILITY_HWC) {
 585                         hwc = func_output->output_get_hwc(output_backend, &ret);
 586                         TDM_RETURN_VAL_IF_FAIL(hwc != NULL, ret);
 587
 588                         private_hwc = calloc(1, sizeof(tdm_private_hwc));
 589                         TDM_RETURN_VAL_IF_FAIL(private_hwc != NULL, TDM_ERROR_OUT_OF_MEMORY);
 590
 591                         private_hwc->private_module = private_module;
 592                         private_hwc->private_output = private_output;
 593                         private_hwc->hwc_backend = hwc;
 594                         private_hwc->index = pipe;
 595                         private_hwc->stamp = tdm_helper_get_time();
 596                         while (tdm_display_find_hwc_stamp(private_module->private_display, private_hwc->stamp))
 597                                 private_hwc->stamp++;
 598
 599                         LIST_INITHEAD(&private_hwc->hwc_window_list);
 600                         LIST_INITHEAD(&private_hwc->hwc_commit_handler_list);
 601
 602                         private_output->private_hwc = private_hwc;
 603                 } else {
 604                         LIST_INITHEAD(&private_output->layer_list);
 605                         LIST_INITHEAD(&private_output->layer_commit_handler_list);
 606                 }
 607         } else {
 608                 _tdm_display_destroy_caps_output(&private_output->caps);
 609                 ret = _tdm_display_update_caps_output(private_module, private_output->pipe, output_backend, &private_output->caps);
 610                 TDM_RETURN_VAL_IF_FAIL(ret == TDM_ERROR_NONE, ret);
 611
 612                 if (private_output->caps.status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 613                         private_output->current_mode = NULL;
 614         }
 615
 616         /* do not use the layer object when the tdm_output has the hwc capability */
 617         if ((private_output->caps.capabilities&TDM_OUTPUT_CAPABILITY_HWC) == 0) {
 618                 layers = func_output->output_get_layers(output_backend, &layer_count, &ret);
 619                 if (ret != TDM_ERROR_NONE) {
 620                         free(layers);
 621                         return ret;
 622                 }
 623
 624                 for (i = 0; i < layer_count; i++) {
 625                         ret = _tdm_display_update_layer(private_output, layers[i], i);
 626                         if (ret != TDM_ERROR_NONE) {
 627                                 free(layers);
 628                                 return ret;
 629                         }
 630                 }
 631
 632                 free(layers);
 633         }
 634
 635         if (output_created) {
 636                 ret = tdm_display_call_thread_cb_output_create(private_display, private_output);
 637                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 638         }
 639
 640         return TDM_ERROR_NONE;
 641 }
 642
 643 static void
 644 _tdm_display_set_main_first(tdm_output **outputs, int index)
 645 {
 646         tdm_output *output_tmp = NULL;
 647
 648         if (index == 0)
 649                 return;
 650
 651         output_tmp = outputs[0];
 652         outputs[0] = outputs[index];
 653         outputs[index] = output_tmp;
 654 }
 655
 656 static tdm_output **
 657 _tdm_display_get_ordered_outputs(tdm_private_module *private_module, int *count)
 658 {
 659         tdm_func_display *func_display = &private_module->func_display;
 660         tdm_output **outputs = NULL;
 661         tdm_output *output_dsi = NULL;
 662         tdm_output *output_lvds = NULL;
 663         tdm_output *output_hdmia = NULL;
 664         tdm_output *output_hdmib = NULL;
 665         int i, output_count = 0, output_connected_count = 0;
 666         int index_dsi = 0, index_lvds = 0, index_hdmia = 0, index_hdmib = 0;
 667         tdm_error ret;
 668
 669         /* don't change list order if not init time */
 670         if (private_module->outputs) {
 671                 TDM_ERR("can't change output order");
 672                 return private_module->outputs;
 673         }
 674
 675         outputs = func_display->display_get_outputs(private_module->bdata, &output_count, &ret);
 676         if (ret != TDM_ERROR_NONE)
 677                 goto no_output;
 678
 679         *count = output_count;
 680
 681         if (output_count == 0)
 682                 goto no_output;
 683         else if (output_count == 1) {
 684                 private_module->outputs = outputs;
 685                 return outputs;
 686         }
 687
 688         /* count connected outputs */
 689         for (i = 0; i < output_count; i++) {
 690                 tdm_func_output *func_output = &private_module->func_output;
 691                 tdm_caps_output caps;
 692                 memset(&caps, 0, sizeof(tdm_caps_output));
 693
 694                 ret = func_output->output_get_capability(outputs[i], &caps);
 695                 if (ret != TDM_ERROR_NONE) {
 696                         TDM_ERR("output_get_capability() failed");
 697                         goto no_output;
 698                 }
 699
 700                 if (caps.status == TDM_OUTPUT_CONN_STATUS_CONNECTED) {
 701                         output_connected_count++;
 702
 703                         switch (caps.type) {
 704                         case TDM_OUTPUT_TYPE_DSI:
 705                                 output_dsi = outputs[i];
 706                                 index_dsi = i;
 707                                 break;
 708                         case TDM_OUTPUT_TYPE_LVDS:
 709                                 output_lvds = outputs[i];
 710                                 index_lvds = i;
 711                                 break;
 712                         case TDM_OUTPUT_TYPE_HDMIA:
 713                                 output_hdmia = outputs[i];
 714                                 index_hdmia = i;
 715                                 break;
 716                         case TDM_OUTPUT_TYPE_HDMIB:
 717                                 output_hdmib = outputs[i];
 718                                 index_hdmib = i;
 719                                 break;
 720                         default:
 721                                 break;
 722                         }
 723                 }
 724
 725                 _tdm_display_destroy_caps_output(&caps);
 726         }
 727
 728         /* ordering : main output is first */
 729         /* If there is no connected output, lvds or dsi cannot be main display. (cannot connect after booting)
 730           * But hdmi is possible, so set hdmi to main display.
 731           * If connected only one output, it is main output.
 732           * If connected outputs over 2, has priority like below.
 733           * (dsi > lvds > hdmi > else)
 734           */
 735         if (output_connected_count == 0) {
 736                 /* hdmi > dsi > lvds > else */
 737                 if (output_hdmia != NULL)
 738                         _tdm_display_set_main_first(outputs, index_hdmia);
 739                 else if (output_hdmib != NULL)
 740                         _tdm_display_set_main_first(outputs, index_hdmib);
 741                 else if (output_dsi != NULL)
 742                         _tdm_display_set_main_first(outputs, index_dsi);
 743                 else if (output_lvds != NULL)
 744                         _tdm_display_set_main_first(outputs, index_lvds);
 745         } else { /* (output_connected_count > 1) */
 746                 /* dsi > lvds > hdmi > else */
 747                 if (output_dsi != NULL)
 748                         _tdm_display_set_main_first(outputs, index_dsi);
 749                 else if (output_lvds != NULL)
 750                         _tdm_display_set_main_first(outputs, index_lvds);
 751                 else if (output_hdmia != NULL)
 752                         _tdm_display_set_main_first(outputs, index_hdmia);
 753                 else if (output_hdmib != NULL)
 754                         _tdm_display_set_main_first(outputs, index_hdmib);
 755         }
 756
 757         private_module->outputs = outputs;
 758
 759         return outputs;
 760
 761 no_output:
 762         free(outputs);
 763         *count = 0;
 764         return NULL;
 765 }
 766
 767 static tdm_error
 768 _tdm_display_setup(tdm_private_display *private_display)
 769 {
 770         tdm_private_module *private_module = NULL;
 771         tdm_error ret = TDM_ERROR_NONE;
 772         int output_count = 0;
 773         int virtual = 0;
 774
 775         if (private_display->pp_module) {
 776                 ret = _tdm_display_update_caps_pp(private_display->pp_module,
 777                                                                                   &private_display->pp_module->caps_pp);
 778                 if (ret != TDM_ERROR_NONE)
 779                         goto failed_update;
 780         }
 781
 782         if (private_display->capture_module) {
 783                 ret = _tdm_display_update_caps_capture(private_display->capture_module,
 784                                                                                            &private_display->capture_module->caps_capture);
 785                 if (ret != TDM_ERROR_NONE)
 786                         goto failed_update;
 787         }
 788
 789         LIST_FOR_EACH_ENTRY(private_module, &private_display->module_list, link) {
 790                 tdm_output **outputs;
 791                 int i, count = 0;
 792
 793                 outputs = _tdm_display_get_ordered_outputs(private_module, &count);
 794
 795                 if (count > 0)
 796                         TDM_GOTO_IF_FAIL(outputs != NULL, failed_update);
 797
 798                 for (i = 0; i < count; i++) {
 799                         ret = tdm_display_update_output(private_module, outputs[i]);
 800                         if (ret != TDM_ERROR_NONE)
 801                                 goto failed_update;
 802                         output_count++;
 803                 }
 804         }
 805
 806         /* At least, the output count should be greater than 0 to ensure tdm_vblank works.
 807          * So we will create a dummy output when backends don't have any output.
 808          * Without destroying a tdm_output object, this dummy output will be replaced with
 809          * a virtual output which is created in runtime.
 810          */
 811         if (output_count == 0) {
 812                 tdm_output **outputs;
 813                 int i, count = 0;
 814
 815                 TDM_INIT_INFO("loading a %s backend", TDM_DUMMY_MODULE);
 816                 ret = _tdm_display_load_module_with_file(private_display, TDM_DUMMY_MODULE);
 817                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, failed_update);
 818                 TDM_GOTO_IF_FAIL(private_display->dummy_module != NULL, failed_update);
 819
 820                 private_module = private_display->dummy_module;
 821
 822                 outputs = _tdm_display_get_ordered_outputs(private_module, &count);
 823                 TDM_GOTO_IF_FAIL(count > 0, failed_update);
 824                 TDM_GOTO_IF_FAIL(outputs != NULL, failed_update);
 825
 826                 for (i = 0; i < count; i++) {
 827                         ret = tdm_display_update_output(private_module, outputs[i]);
 828                         if (ret != TDM_ERROR_NONE)
 829                                 goto failed_update;
 830                 }
 831         }
 832
 833         virtual = tdm_config_get_int(TDM_CONFIG_KEY_GENERAL_VIRTUAL_OUTPUT, 0);
 834         if (virtual) {
 835                 TDM_INIT_INFO("loading a %s backend", TDM_VIRTUAL_MODULE);
 836                 ret = _tdm_display_load_module_with_file(private_display, TDM_VIRTUAL_MODULE);
 837                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, failed_update);
 838                 TDM_GOTO_IF_FAIL(private_display->virtual_module != NULL, failed_update);
 839         }
 840
 841         return TDM_ERROR_NONE;
 842
 843 failed_update:
 844         _tdm_display_destroy_private_display(private_display);
 845         return ret;
 846 }
 847 /* LCOV_EXCL_STOP */
 848
 849 EXTERN tdm_error
 850 tdm_display_update(tdm_display *dpy)
 851 {
 852         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, TDM_ERROR_INVALID_PARAMETER);
 853
 854         TDM_DEPRECATED(NULL);
 855
 856         return TDM_ERROR_NONE;
 857 }
 858
 859 int tdm_debug_module;
 860 int tdm_debug_dump;
 861 int tdm_ttrace_module;
 862 int tdm_ttrace_output;
 863
 864 static tdm_private_display *g_private_display;
 865 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 866
 867 /* LCOV_EXCL_START */
 868 static tdm_error
 869 _tdm_display_check_module(tdm_backend_module *module)
 870 {
 871         int tdm_backend_major, tdm_backend_minor;
 872         int backend_module_major, backend_module_minor;
 873
 874         tdm_backend_major = TDM_BACKEND_GET_ABI_MAJOR(TDM_BACKEND_ABI_LATEST_VERSION);
 875         tdm_backend_minor = TDM_BACKEND_GET_ABI_MINOR(TDM_BACKEND_ABI_LATEST_VERSION);
 876
 877         TDM_INFO("TDM Backend ABI version : %d.%d",
 878                          tdm_backend_major, tdm_backend_minor);
 879
 880         if (!module->name) {
 881                 TDM_ERR("TDM backend doesn't have name");
 882                 return TDM_ERROR_BAD_MODULE;
 883         }
 884
 885         if (!module->vendor) {
 886                 TDM_ERR("TDM backend doesn't have vendor");
 887                 return TDM_ERROR_BAD_MODULE;
 888         }
 889
 890         backend_module_major = TDM_BACKEND_GET_ABI_MAJOR(module->abi_version);
 891         backend_module_minor = TDM_BACKEND_GET_ABI_MINOR(module->abi_version);
 892
 893         TDM_INFO("TDM module name: %s", module->name);
 894         TDM_INFO("'%s' vendor: %s", module->name, module->vendor);
 895         TDM_INFO("'%s' backend ABI version: %d.%d", module->name, backend_module_major, backend_module_minor);
 896
 897         if (backend_module_major > tdm_backend_major) {
 898                 TDM_ERR("'%s' major version(%d) is newer than %d",
 899                                 module->name, backend_module_major, tdm_backend_major);
 900                 return TDM_ERROR_BAD_MODULE;
 901         }
 902
 903         if (tdm_backend_major == backend_module_major &&
 904                 backend_module_minor > tdm_backend_minor) {
 905                 TDM_ERR("'%s' minor version(%d) is newer than %d",
 906                                 module->name, backend_module_minor, tdm_backend_minor);
 907                 return TDM_ERROR_BAD_MODULE;
 908         }
 909
 910         if (!module->init) {
 911                 TDM_ERR("'%s' doesn't have init function", module->name);
 912                 return TDM_ERROR_BAD_MODULE;
 913         }
 914
 915         if (!module->deinit) {
 916                 TDM_ERR("'%s' doesn't have deinit function", module->name);
 917                 return TDM_ERROR_BAD_MODULE;
 918         }
 919
 920         return TDM_ERROR_NONE;
 921 }
 922
 923 static tdm_error
 924 _tdm_display_check_backend_functions(tdm_private_module *private_module)
 925 {
 926         tdm_func_display *func_display = &private_module->func_display;
 927         tdm_func_output *func_output = &private_module->func_output;
 928         tdm_func_layer *func_layer = &private_module->func_layer;
 929         tdm_error ret;
 930
 931         /* below functions should be implemented in backend side */
 932
 933         TDM_RETURN_VAL_IF_FAIL(func_display != NULL, TDM_ERROR_BAD_MODULE);
 934         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capability, TDM_ERROR_BAD_MODULE);
 935         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_outputs, TDM_ERROR_BAD_MODULE);
 936         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_capability, TDM_ERROR_BAD_MODULE);
 937         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_layers, TDM_ERROR_BAD_MODULE);
 938         TDM_RETURN_VAL_IF_FAIL(func_output->output_wait_vblank, TDM_ERROR_BAD_MODULE);
 939         TDM_RETURN_VAL_IF_FAIL(func_output->output_set_vblank_handler, TDM_ERROR_BAD_MODULE);
 940         TDM_RETURN_VAL_IF_FAIL(func_output->output_commit, TDM_ERROR_BAD_MODULE);
 941         TDM_RETURN_VAL_IF_FAIL(func_output->output_set_commit_handler, TDM_ERROR_BAD_MODULE);
 942         TDM_RETURN_VAL_IF_FAIL(func_output->output_set_mode, TDM_ERROR_BAD_MODULE);
 943         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_capability, TDM_ERROR_BAD_MODULE);
 944         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_set_info, TDM_ERROR_BAD_MODULE);
 945         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_info, TDM_ERROR_BAD_MODULE);
 946         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_set_buffer, TDM_ERROR_BAD_MODULE);
 947         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_unset_buffer, TDM_ERROR_BAD_MODULE);
 948
 949         ret = func_display->display_get_capability(private_module->bdata, &private_module->caps_display);
 950         if (ret != TDM_ERROR_NONE) {
 951                 TDM_ERR("display_get_capability() failed");
 952                 return TDM_ERROR_BAD_MODULE;
 953         }
 954
 955         if (private_module->capabilities & TDM_DISPLAY_CAPABILITY_PP) {
 956                 tdm_func_pp *func_pp = &private_module->func_pp;
 957                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_pp_capability, TDM_ERROR_BAD_MODULE);
 958                 TDM_RETURN_VAL_IF_FAIL(func_display->display_create_pp, TDM_ERROR_BAD_MODULE);
 959                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_destroy, TDM_ERROR_BAD_MODULE);
 960                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_commit, TDM_ERROR_BAD_MODULE);
 961                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_set_done_handler, TDM_ERROR_BAD_MODULE);
 962         }
 963
 964         if (private_module->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE) {
 965                 tdm_func_capture *func_capture = &private_module->func_capture;
 966                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capture_capability, TDM_ERROR_BAD_MODULE);
 967                 if (private_module->caps_capture.capabilities & TDM_CAPTURE_CAPABILITY_OUTPUT)
 968                         TDM_RETURN_VAL_IF_FAIL(func_output->output_create_capture, TDM_ERROR_BAD_MODULE);
 969                 if (private_module->caps_capture.capabilities & TDM_CAPTURE_CAPABILITY_LAYER)
 970                         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_create_capture, TDM_ERROR_BAD_MODULE);
 971                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_destroy, TDM_ERROR_BAD_MODULE);
 972                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_commit, TDM_ERROR_BAD_MODULE);
 973                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_set_done_handler, TDM_ERROR_BAD_MODULE);
 974         }
 975
 976         return TDM_ERROR_NONE;
 977 }
 978
 979 static tdm_error
 980 _tdm_display_load_module_with_file(tdm_private_display *private_display,
 981                                                                    const char *file)
 982 {
 983         char path[TDM_PATH_LEN] = {0,};
 984         void *module = NULL;
 985         tdm_backend_module *module_data;
 986         tdm_backend_data *bdata = NULL;
 987         tdm_private_module *private_module = NULL;
 988         tdm_error ret;
 989         double stamp;
 990         int size;
 991
 992         size = snprintf(path, sizeof(path), TDM_MODULE_PATH "/%s", file);
 993         if (size >= (int)sizeof(path)) {
 994                 TDM_WRN("too long: %s/%s", TDM_MODULE_PATH, file);
 995                 return TDM_ERROR_BAD_MODULE;
 996         };
 997
 998         private_module = calloc(1, sizeof *private_module);
 999         if (!private_module) {
1000                 TDM_ERR("alloc failed: %m");
1001                 ret = TDM_ERROR_OUT_OF_MEMORY;
1002                 goto failed_load;
1003         }
1004
1005         private_module->private_display = private_display;
1006
1007         stamp = tdm_helper_get_time();
1008
1009         TDM_TRACE_BEGIN("TDM_Load_Backend");
1010         module = dlopen(path, RTLD_LAZY);
1011         if (!module) {
1012                 TDM_ERR("%s", dlerror());
1013                 TDM_TRACE_END();
1014                 ret = TDM_ERROR_NO_MODULE;
1015                 goto failed_load;
1016         }
1017
1018         private_module->module = module;
1019
1020         module_data = dlsym(module, "tdm_backend_module_data");
1021         if (!module_data) {
1022                 TDM_ERR("'%s' doesn't have data object", file);
1023                 ret = TDM_ERROR_BAD_MODULE;
1024                 TDM_TRACE_END();
1025                 goto failed_load;
1026         }
1027         TDM_TRACE_END();
1028
1029         private_module->module_data = module_data;
1030
1031         TDM_DBG("dlopen, dlsym time: %.3f ms", (tdm_helper_get_time() - stamp) * 1000.0);
1032
1033         /* check if version, init() and deinit() are valid or not */
1034         ret = _tdm_display_check_module(module_data);
1035         if (ret != TDM_ERROR_NONE) {
1036                 TDM_ERR("backend(%s) load failed: check module error", module_data->name);
1037                 goto failed_load;
1038         }
1039
1040         private_display->current_module = private_module;
1041
1042         /* We don't care if backend_data is NULL or not. It's up to backend. */
1043         TDM_TRACE_BEGIN("TDM_Init_Backend");
1044         stamp = tdm_helper_get_time();
1045         TDM_INIT_INFO("init backend");
1046         bdata = module_data->init((tdm_display *)private_display, &ret);
1047         TDM_INIT_INFO("init backend done");
1048         TDM_DBG("backend init() time: %.3f ms", (tdm_helper_get_time() - stamp) * 1000.0);
1049         TDM_TRACE_END();
1050
1051         private_display->current_module = NULL;
1052
1053         if (!strncmp(file, TDM_DUMMY_MODULE, TDM_NAME_LEN))
1054                 private_display->dummy_module = private_module;
1055
1056         if (!strncmp(file, TDM_VIRTUAL_MODULE, TDM_NAME_LEN))
1057                 private_display->virtual_module = private_module;
1058
1059         private_module->bdata = bdata;
1060
1061         if (ret != TDM_ERROR_NONE) {
1062                 TDM_ERR("backend(%s) load failed: init error", module_data->name);
1063                 goto failed_load;
1064         }
1065
1066         ret = _tdm_display_check_backend_functions(private_module);
1067         if (ret != TDM_ERROR_NONE) {
1068                 TDM_ERR("backend(%s) load failed: check functions error", module_data->name);
1069                 goto failed_load;
1070         }
1071
1072         LIST_INITHEAD(&private_module->output_list);
1073         LIST_INITHEAD(&private_module->voutput_list);
1074         LIST_INITHEAD(&private_module->pp_list);
1075         LIST_INITHEAD(&private_module->capture_list);
1076
1077         LIST_ADDTAIL(&private_module->link, &private_display->module_list);
1078
1079         TDM_INIT_INFO("Success to load '%s' module", module_data->name);
1080
1081         return TDM_ERROR_NONE;
1082 failed_load:
1083         if (bdata)
1084                 module_data->deinit(bdata);
1085         if (module)
1086                 dlclose(module);
1087         if (private_module)
1088                 free(private_module);
1089         return ret;
1090 }
1091
1092 static tdm_error
1093 _tdm_display_load_modules(tdm_private_display *private_display)
1094 {
1095         const char *module_names;
1096         tdm_error ret = TDM_ERROR_NONE;
1097         char temp[TDM_PATH_LEN];
1098         char *arg;
1099         char *end;
1100
1101         LIST_INITHEAD(&private_display->module_list);
1102
1103         module_names = tdm_config_get_string(TDM_CONFIG_KEY_GENERAL_BACKENDS, TDM_DEFAULT_MODULE);
1104
1105         snprintf(temp, TDM_PATH_LEN, "%s", module_names);
1106
1107         arg = strtok_r(temp, TDM_CONFIG_DELIM, &end);
1108         while (arg) {
1109                 TDM_INIT_INFO("loading a %s backend", arg);
1110                 ret = _tdm_display_load_module_with_file(private_display, arg);
1111                 if (ret == TDM_ERROR_NONE)
1112                         TDM_INIT_INFO("%s backend loading success", arg);
1113                 else
1114                         TDM_INIT_INFO("%s backend loading failed", arg);
1115                 arg = strtok_r(NULL, TDM_CONFIG_DELIM, &end);
1116         }
1117
1118         return ret;
1119 }
1120
1121 static void
1122 _tdm_display_unload_modules(tdm_private_display *private_display)
1123 {
1124         tdm_private_module *private_module = NULL, *bb = NULL;
1125
1126         LIST_FOR_EACH_ENTRY_SAFE(private_module, bb, &private_display->module_list, link) {
1127                 LIST_DEL(&private_module->link);
1128
1129                 if (private_module->module_data)
1130                         private_module->module_data->deinit(private_module->bdata);
1131                 if (private_module->module)
1132                         dlclose(private_module->module);
1133
1134                 free(private_module);
1135         }
1136 }
1137 /* LCOV_EXCL_STOP */
1138
1139 INTERN void *
1140 tdm_display_find_stamp(tdm_private_display *private_display, double stamp)
1141 {
1142         return (void*)g_private_display;
1143 }
1144
1145 EXTERN tdm_display *
1146 tdm_display_init(tdm_error *error)
1147 {
1148         tdm_private_display *private_display = NULL;
1149         const char *str;
1150         tdm_error ret;
1151         double stamp1, stamp2, start;
1152         int mode;
1153
1154         pthread_mutex_lock(&gLock);
1155
1156         if (g_private_display) {
1157                 g_private_display->init_count++;
1158                 pthread_mutex_unlock(&gLock);
1159                 if (error)
1160                         *error = TDM_ERROR_NONE;
1161                 return g_private_display;
1162         }
1163
1164         start = stamp1 = tdm_helper_get_time();
1165
1166         private_display = calloc(1, sizeof(tdm_private_display));
1167         if (!private_display) {
1168                 /* LCOV_EXCL_START */
1169                 ret = TDM_ERROR_OUT_OF_MEMORY;
1170                 TDM_ERR("'private_display != NULL' failed");
1171                 goto failed_alloc;
1172                 /* LCOV_EXCL_STOP */
1173         }
1174
1175         private_display->stamp = tdm_helper_get_time();
1176
1177         LIST_INITHEAD(&private_display->output_create_handler_list);
1178
1179         str = tdm_config_get_string(TDM_CONFIG_KEY_DEBUG_MODULE, NULL);
1180         if (str)
1181                 tdm_display_enable_debug_module(str);
1182
1183         str = tdm_config_get_string(TDM_CONFIG_KEY_DEBUG_DUMP, NULL);
1184         if (str)
1185                 tdm_display_enable_dump(private_display, str, NULL, NULL);
1186
1187         if (pthread_mutex_init(&private_display->lock, NULL)) {
1188                 /* LCOV_EXCL_START */
1189                 ret = TDM_ERROR_OPERATION_FAILED;
1190                 TDM_ERR("mutex init failed: %m");
1191                 goto failed_mutex_init;
1192                 /* LCOV_EXCL_STOP */
1193         }
1194
1195         _pthread_mutex_lock(&private_display->lock);
1196
1197         stamp2 = tdm_helper_get_time();
1198         TDM_DBG("prepare init time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1199         stamp1 = stamp2;
1200
1201         ret = tdm_event_loop_init(private_display);
1202         if (ret != TDM_ERROR_NONE)
1203                 goto failed_event;
1204
1205         stamp2 = tdm_helper_get_time();
1206         TDM_INIT_INFO("event loop init time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1207         stamp1 = stamp2;
1208
1209         ret = tdm_vblank_init(private_display);
1210         if (ret != TDM_ERROR_NONE)
1211                 goto failed_vblank;
1212
1213         ret = tdm_output_init(private_display);
1214         if (ret != TDM_ERROR_NONE)
1215                 goto failed_load;
1216
1217         ret = tdm_hwc_init(private_display);
1218         if (ret != TDM_ERROR_NONE)
1219                 goto failed_load;
1220
1221         ret = tdm_pp_init(private_display);
1222         if (ret != TDM_ERROR_NONE)
1223                 goto failed_load;
1224
1225         ret = tdm_capture_init(private_display);
1226         if (ret != TDM_ERROR_NONE)
1227                 goto failed_load;
1228
1229         ret = _tdm_display_load_modules(private_display);
1230         if (!(ret == TDM_ERROR_NONE || ret == TDM_ERROR_NO_MODULE))
1231                 goto failed_load;
1232
1233         stamp2 = tdm_helper_get_time();
1234         TDM_INIT_INFO("loading backend time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1235         stamp1 = stamp2;
1236
1237 #ifdef INIT_BUFMGR
1238         int tdm_drm_fd = tdm_helper_get_fd("TDM_DRM_MASTER_FD");
1239         if (tdm_drm_fd >= 0) {
1240                 private_display->bufmgr = tbm_bufmgr_init(tdm_drm_fd);
1241                 close(tdm_drm_fd);
1242                 if (!private_display->bufmgr) {
1243                         TDM_ERR("tbm_bufmgr_init failed");
1244                         goto failed_update;
1245                 } else {
1246                         TDM_INFO("tbm_bufmgr_init successed");
1247                 }
1248
1249                 stamp2 = tdm_helper_get_time();
1250                 TDM_DBG("initializing bufmgr time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1251                 stamp1 = stamp2;
1252         }
1253 #endif
1254
1255         TDM_TRACE_BEGIN("TDM_Update_Display");
1256         ret = _tdm_display_setup(private_display);
1257         TDM_INIT_INFO("updating display");
1258         TDM_TRACE_END();
1259         if (ret != TDM_ERROR_NONE)
1260                 goto failed_update;
1261
1262         stamp2 = tdm_helper_get_time();
1263         TDM_DBG("updating display time: %.3f ms", (stamp2 - stamp1) * 1000.0);
1264         stamp1 = stamp2;
1265
1266         tdm_event_loop_create_backend_source(private_display);
1267
1268         private_display->init_count = 1;
1269         g_private_display = private_display;
1270
1271         /* the COMMIT_PER_VBLANK functionality is ability of an output to support
1272          * several operational modes (commit_per_vblank modes) related to tdm_commit;
1273          * this functionality can be turned off which means a default mode */
1274         mode = tdm_config_get_int(TDM_CONFIG_KEY_GENERAL_COMMIT_PER_VBLANK, 0);
1275         if (mode > 0) {
1276                 tdm_private_module *b = NULL;
1277                 tdm_private_output *o = NULL;
1278
1279                 /* outputs which support hwc capability can work only
1280                  * if commit_per_vblank mode is '0' (default mode) */
1281                 LIST_FOR_EACH_ENTRY(b, &private_display->module_list, link) {
1282                         LIST_FOR_EACH_ENTRY(o, &b->output_list, link) {
1283                                 if (!(o->caps.capabilities & TDM_OUTPUT_CAPABILITY_HWC))
1284                                         tdm_output_choose_commit_per_vblank_mode(o, mode);
1285                         }
1286                 }
1287         }
1288
1289         if (error)
1290                 *error = TDM_ERROR_NONE;
1291
1292         tdm_thread_cb_set_find_func(TDM_THREAD_CB_DISPLAY_OUTPUT_CREATE, tdm_display_find_stamp);
1293
1294         _pthread_mutex_unlock(&private_display->lock);
1295         pthread_mutex_unlock(&gLock);
1296
1297         TDM_INIT_INFO("init time: %.3f ms", (tdm_helper_get_time() - start) * 1000.0);
1298
1299         return (tdm_display *)private_display;
1300
1301 /* LCOV_EXCL_START */
1302 failed_update:
1303         _tdm_display_unload_modules(private_display);
1304 failed_load:
1305         tdm_vblank_deinit(private_display);
1306 failed_vblank:
1307         tdm_event_loop_stop(private_display);
1308         tdm_event_loop_deinit(private_display);
1309 failed_event:
1310         _pthread_mutex_unlock(&private_display->lock);
1311         pthread_mutex_destroy(&private_display->lock);
1312 failed_mutex_init:
1313         free(private_display);
1314 failed_alloc:
1315         if (error)
1316                 *error = ret;
1317         pthread_mutex_unlock(&gLock);
1318         return NULL;
1319 /* LCOV_EXCL_STOP */
1320 }
1321
1322 EXTERN void
1323 tdm_display_deinit(tdm_display *dpy)
1324 {
1325         tdm_private_display *private_display = dpy;
1326
1327         if (!private_display)
1328                 return;
1329
1330         pthread_mutex_lock(&gLock);
1331
1332         private_display->init_count--;
1333         if (private_display->init_count > 0) {
1334                 pthread_mutex_unlock(&gLock);
1335                 return;
1336         }
1337
1338         /* dont move the position of lock/unlock. all resource should be protected
1339          * during destroying. after tdm_event_loop_deinit, we don't worry about thread
1340          * things because it's finalized.
1341          */
1342         _pthread_mutex_lock(&private_display->lock);
1343         tdm_event_loop_stop(private_display);
1344         _pthread_mutex_unlock(&private_display->lock);
1345
1346         tdm_event_loop_deinit(private_display);
1347
1348         /* when private_output is destroyed, all vblank resources of client and server
1349          * are destroyed. Then we can call tdm_vblank_deinit. After destroying display,
1350          * we can unload backend modulues.
1351          */
1352         _tdm_display_destroy_private_display(private_display);
1353         _tdm_display_unload_modules(private_display);
1354
1355         tdm_vblank_deinit(private_display);
1356
1357 #ifdef INIT_BUFMGR
1358         if (private_display->bufmgr)
1359                 tbm_bufmgr_deinit(private_display->bufmgr);
1360 #endif
1361
1362         tbm_drm_helper_unset_tbm_master_fd();
1363
1364         pthread_mutex_destroy(&private_display->lock);
1365         free(private_display);
1366         g_private_display = NULL;
1367
1368         if (tdm_debug_dump_dir) {
1369                 free(tdm_debug_dump_dir);
1370                 tdm_debug_dump_dir = NULL;
1371         }
1372
1373         tdm_config_deinit();
1374
1375         pthread_mutex_unlock(&gLock);
1376
1377         TDM_INFO("done");
1378 }
1379
1380 INTERN tdm_private_display *
1381 tdm_display_get(void)
1382 {
1383         return g_private_display;
1384 }
1385