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