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