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 <sc1.lim@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.h"
  41 #include "tdm_backend.h"
  42 #include "tdm_private.h"
  43 #include "tdm_helper.h"
  44
  45 pthread_mutex_t tdm_mutex_check_lock = PTHREAD_MUTEX_INITIALIZER;
  46 int tdm_mutex_locked;
  47
  48 static tdm_private_layer *
  49 _tdm_display_find_private_layer(tdm_private_output *private_output,
  50                                                                 tdm_layer *layer_backend)
  51 {
  52         tdm_private_layer *private_layer = NULL;
  53
  54         LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link) {
  55                 if (private_layer->layer_backend == layer_backend)
  56                         return private_layer;
  57         }
  58
  59         return NULL;
  60 }
  61
  62 static tdm_private_output *
  63 _tdm_display_find_private_output(tdm_private_display *private_display,
  64                                                                  tdm_output *output_backend)
  65 {
  66         tdm_private_output *private_output = NULL;
  67
  68         LIST_FOR_EACH_ENTRY(private_output, &private_display->output_list, link) {
  69                 if (private_output->output_backend == output_backend)
  70                         return private_output;
  71         }
  72
  73         return NULL;
  74 }
  75
  76 INTERN tdm_private_output *
  77 tdm_display_find_output_stamp(tdm_private_display *private_display, double stamp)
  78 {
  79         tdm_private_output *private_output = NULL;
  80
  81         LIST_FOR_EACH_ENTRY(private_output, &private_display->output_list, link) {
  82                 if (private_output->stamp == stamp)
  83                         return private_output;
  84         }
  85
  86         return NULL;
  87 }
  88
  89 static void
  90 _tdm_display_destroy_caps_pp(tdm_caps_pp *caps_pp)
  91 {
  92         if (caps_pp->formats)
  93                 free(caps_pp->formats);
  94
  95         memset(caps_pp, 0, sizeof(tdm_caps_pp));
  96 }
  97
  98 static void
  99 _tdm_display_destroy_caps_capture(tdm_caps_capture *caps_capture)
 100 {
 101         if (caps_capture->formats)
 102                 free(caps_capture->formats);
 103
 104         memset(caps_capture, 0, sizeof(tdm_caps_capture));
 105 }
 106
 107 static void
 108 _tdm_display_destroy_caps_layer(tdm_caps_layer *caps_layer)
 109 {
 110         if (caps_layer->formats)
 111                 free(caps_layer->formats);
 112
 113         if (caps_layer->props)
 114                 free(caps_layer->props);
 115
 116         memset(caps_layer, 0, sizeof(tdm_caps_layer));
 117 }
 118
 119 static void
 120 _tdm_display_destroy_caps_output(tdm_caps_output *caps_output)
 121 {
 122         if (caps_output->modes)
 123                 free(caps_output->modes);
 124
 125         if (caps_output->props)
 126                 free(caps_output->props);
 127
 128         memset(caps_output, 0, sizeof(tdm_caps_output));
 129 }
 130
 131 static void
 132 _tdm_display_destroy_private_layer(tdm_private_layer *private_layer)
 133 {
 134         tdm_private_capture *c = NULL, *cc = NULL;
 135
 136         LIST_DEL(&private_layer->link);
 137
 138         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &private_layer->capture_list, link)
 139         tdm_capture_destroy_internal(c);
 140
 141         _tdm_display_destroy_caps_layer(&private_layer->caps);
 142
 143         free(private_layer);
 144 }
 145
 146 static void
 147 _tdm_display_destroy_private_output(tdm_private_output *private_output)
 148 {
 149         tdm_private_layer *l = NULL, *ll = NULL;
 150         tdm_private_capture *c = NULL, *cc = NULL;
 151         tdm_private_vblank_handler *v = NULL, *vv = NULL;
 152         tdm_private_commit_handler *m = NULL, *mm = NULL;
 153         tdm_private_change_handler *h = NULL, *hh = NULL;
 154
 155         LIST_DEL(&private_output->link);
 156
 157         free(private_output->layers_ptr);
 158
 159         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &private_output->vblank_handler_list, link) {
 160                 LIST_DEL(&v->link);
 161                 free(v);
 162         }
 163
 164         LIST_FOR_EACH_ENTRY_SAFE(m, mm, &private_output->commit_handler_list, link) {
 165                 LIST_DEL(&m->link);
 166                 free(m);
 167         }
 168
 169         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list_main, link) {
 170                 LIST_DEL(&h->link);
 171                 free(h);
 172         }
 173
 174         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list_sub, link) {
 175                 LIST_DEL(&h->link);
 176                 free(h);
 177         }
 178
 179         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &private_output->capture_list, link)
 180         tdm_capture_destroy_internal(c);
 181
 182         LIST_FOR_EACH_ENTRY_SAFE(l, ll, &private_output->layer_list, link)
 183         _tdm_display_destroy_private_layer(l);
 184
 185         _tdm_display_destroy_caps_output(&private_output->caps);
 186
 187         if (private_output->dpms_changed_timer)
 188                 tdm_event_loop_source_remove(private_output->dpms_changed_timer);
 189
 190         private_output->stamp = 0;
 191         free(private_output);
 192 }
 193
 194 static void
 195 _tdm_display_destroy_private_display(tdm_private_display *private_display)
 196 {
 197         tdm_private_output *o = NULL, *oo = NULL;
 198         tdm_private_pp *p = NULL, *pp = NULL;
 199
 200         free(private_display->outputs_ptr);
 201         if (private_display->outputs) {
 202                 free(private_display->outputs);
 203                 private_display->outputs = NULL;
 204         }
 205
 206         LIST_FOR_EACH_ENTRY_SAFE(p, pp, &private_display->pp_list, link)
 207         tdm_pp_destroy_internal(p);
 208
 209         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_display->output_list, link)
 210         _tdm_display_destroy_private_output(o);
 211
 212         _tdm_display_destroy_caps_pp(&private_display->caps_pp);
 213         _tdm_display_destroy_caps_capture(&private_display->caps_capture);
 214
 215         private_display->capabilities = 0;
 216         private_display->caps_display.max_layer_count = -1;
 217 }
 218
 219 static tdm_error
 220 _tdm_display_update_caps_pp(tdm_private_display *private_display,
 221                                                         tdm_caps_pp *caps)
 222 {
 223         tdm_func_display *func_display = &private_display->func_display;
 224         tdm_error ret;
 225
 226         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP))
 227                 return TDM_ERROR_NONE;
 228
 229         if (!func_display->display_get_pp_capability) {
 230                 TDM_ERR("no display_get_pp_capability()");
 231                 return TDM_ERROR_BAD_MODULE;
 232         }
 233
 234         ret = func_display->display_get_pp_capability(private_display->bdata, caps);
 235         if (ret != TDM_ERROR_NONE) {
 236                 TDM_ERR("display_get_pp_capability() failed");
 237                 return TDM_ERROR_BAD_MODULE;
 238         }
 239
 240         return TDM_ERROR_NONE;
 241 }
 242
 243 static tdm_error
 244 _tdm_display_update_caps_capture(tdm_private_display *private_display,
 245                                                                  tdm_caps_capture *caps)
 246 {
 247         tdm_func_display *func_display = &private_display->func_display;
 248         tdm_error ret;
 249
 250         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE))
 251                 return TDM_ERROR_NONE;
 252
 253         if (!func_display->display_get_capture_capability) {
 254                 TDM_ERR("no display_get_capture_capability()");
 255                 return TDM_ERROR_BAD_MODULE;
 256         }
 257
 258         ret = func_display->display_get_capture_capability(private_display->bdata, caps);
 259         if (ret != TDM_ERROR_NONE) {
 260                 TDM_ERR("display_get_capture_capability() failed");
 261                 return TDM_ERROR_BAD_MODULE;
 262         }
 263
 264         return TDM_ERROR_NONE;
 265 }
 266
 267 static tdm_error
 268 _tdm_display_update_caps_layer(tdm_private_display *private_display,
 269                                                            tdm_layer *layer_backend, tdm_caps_layer *caps)
 270 {
 271         tdm_func_layer *func_layer = &private_display->func_layer;
 272         tdm_error ret;
 273
 274         if (!func_layer->layer_get_capability) {
 275                 TDM_ERR("no layer_get_capability()");
 276                 return TDM_ERROR_BAD_MODULE;
 277         }
 278
 279         ret = func_layer->layer_get_capability(layer_backend, caps);
 280         if (ret != TDM_ERROR_NONE) {
 281                 TDM_ERR("layer_get_capability() failed");
 282                 return TDM_ERROR_BAD_MODULE;
 283         }
 284
 285         return TDM_ERROR_NONE;
 286 }
 287
 288 static tdm_error
 289 _tdm_display_update_caps_output(tdm_private_display *private_display, int pipe,
 290                                                                 tdm_output *output_backend, tdm_caps_output *caps)
 291 {
 292         tdm_func_output *func_output = &private_display->func_output;
 293         char temp[TDM_NAME_LEN];
 294         tdm_error ret;
 295         double stamp;
 296
 297         if (!func_output->output_get_capability) {
 298                 TDM_ERR("no output_get_capability()");
 299                 return TDM_ERROR_BAD_MODULE;
 300         }
 301
 302         stamp = tdm_helper_get_time();
 303         ret = func_output->output_get_capability(output_backend, caps);
 304         TDM_DBG("backend output_get_capability() time: %.3f ms", (tdm_helper_get_time() - stamp) * 1000.0);
 305
 306         if (ret != TDM_ERROR_NONE) {
 307                 TDM_ERR("output_get_capability() failed");
 308                 return TDM_ERROR_BAD_MODULE;
 309         }
 310
 311         /* FIXME: Use model for tdm client to distinguish amoung outputs */
 312         snprintf(temp, TDM_NAME_LEN, "%s-%d", caps->model, pipe);
 313         snprintf(caps->model, TDM_NAME_LEN, "%s", temp);
 314
 315         return TDM_ERROR_NONE;
 316 }
 317
 318 static tdm_error
 319 _tdm_display_update_layer(tdm_private_display *private_display,
 320                                                   tdm_private_output *private_output,
 321                                                   tdm_layer *layer_backend, int index)
 322 {
 323         tdm_private_layer *private_layer;
 324         tdm_error ret;
 325
 326         private_layer = _tdm_display_find_private_layer(private_output, layer_backend);
 327         if (!private_layer) {
 328                 private_layer = calloc(1, sizeof(tdm_private_layer));
 329                 TDM_RETURN_VAL_IF_FAIL(private_layer != NULL, TDM_ERROR_OUT_OF_MEMORY);
 330
 331                 LIST_ADDTAIL(&private_layer->link, &private_output->layer_list);
 332                 private_layer->index = index;
 333                 private_layer->private_display = private_display;
 334                 private_layer->private_output = private_output;
 335                 private_layer->layer_backend = layer_backend;
 336
 337                 LIST_INITHEAD(&private_layer->capture_list);
 338
 339                 private_layer->usable = 1;
 340         } else
 341                 _tdm_display_destroy_caps_layer(&private_layer->caps);
 342
 343         ret = _tdm_display_update_caps_layer(private_display, layer_backend,
 344                                                                                  &private_layer->caps);
 345         if (ret != TDM_ERROR_NONE)
 346                 goto failed_update;
 347
 348         return TDM_ERROR_NONE;
 349 failed_update:
 350         _tdm_display_destroy_private_layer(private_layer);
 351         return ret;
 352 }
 353
 354 INTERN tdm_error
 355 tdm_display_update_output(tdm_private_display *private_display,
 356                                                   tdm_output *output_backend, int pipe)
 357 {
 358         tdm_func_output *func_output = &private_display->func_output;
 359         tdm_private_output *private_output = NULL;
 360         tdm_layer **layers = NULL;
 361         int layer_count = 0, i;
 362         tdm_error ret;
 363
 364         private_output = _tdm_display_find_private_output(private_display, output_backend);
 365         if (!private_output) {
 366                 private_output = calloc(1, sizeof(tdm_private_output));
 367                 TDM_RETURN_VAL_IF_FAIL(private_output != NULL, TDM_ERROR_OUT_OF_MEMORY);
 368
 369                 private_output->stamp = tdm_helper_get_time();
 370                 while (tdm_display_find_output_stamp(private_display, private_output->stamp))
 371                         private_output->stamp++;
 372
 373                 LIST_ADDTAIL(&private_output->link, &private_display->output_list);
 374
 375                 private_output->private_display = private_display;
 376                 private_output->current_dpms_value = TDM_OUTPUT_DPMS_OFF;
 377                 private_output->output_backend = output_backend;
 378                 private_output->pipe = pipe;
 379                 private_output->index = pipe;
 380
 381                 LIST_INITHEAD(&private_output->layer_list);
 382                 LIST_INITHEAD(&private_output->capture_list);
 383                 LIST_INITHEAD(&private_output->vblank_handler_list);
 384                 LIST_INITHEAD(&private_output->commit_handler_list);
 385                 LIST_INITHEAD(&private_output->change_handler_list_main);
 386                 LIST_INITHEAD(&private_output->change_handler_list_sub);
 387
 388                 if (func_output->output_set_status_handler) {
 389                         func_output->output_set_status_handler(private_output->output_backend,
 390                                                                                                    tdm_output_cb_status,
 391                                                                                                    private_output);
 392                         private_output->regist_change_cb = 1;
 393                 }
 394
 395                 ret = _tdm_display_update_caps_output(private_display, pipe, output_backend,
 396                                                                                           &private_output->caps);
 397                 if (ret != TDM_ERROR_NONE)
 398                         return ret;
 399         } else {
 400                 tdm_caps_output new_caps;
 401
 402                 ret = _tdm_display_update_caps_output(private_display, pipe, output_backend,
 403                                                                                           &new_caps);
 404                 if (ret != TDM_ERROR_NONE)
 405                         return ret;
 406
 407                 /* FIXME: This is very ugly. need to fix after the TDM ABI is changed. */
 408                 if (private_output->caps.status != new_caps.status) {
 409                         _tdm_display_destroy_caps_output(&private_output->caps);
 410                         private_output->caps = new_caps;
 411                         private_output->current_mode = NULL;
 412                 } else {
 413                         tdm_output_mode *old_modes = private_output->caps.modes;
 414                         unsigned int old_mode_count = private_output->caps.mode_count;
 415                         if (new_caps.modes)
 416                                 free(new_caps.modes);
 417                         new_caps.modes = old_modes;
 418                         new_caps.mode_count = old_mode_count;
 419                         if (private_output->caps.props)
 420                                 free(private_output->caps.props);
 421                         private_output->caps = new_caps;
 422                 }
 423         }
 424
 425         layers = func_output->output_get_layers(output_backend, &layer_count, &ret);
 426         if (ret != TDM_ERROR_NONE)
 427                 goto failed_update;
 428
 429         for (i = 0; i < layer_count; i++) {
 430                 ret = _tdm_display_update_layer(private_display, private_output, layers[i], i);
 431                 if (ret != TDM_ERROR_NONE)
 432                         goto failed_update;
 433         }
 434
 435         free(layers);
 436
 437         return TDM_ERROR_NONE;
 438 failed_update:
 439         _tdm_display_destroy_private_output(private_output);
 440         free(layers);
 441         return ret;
 442 }
 443
 444 static tdm_output **
 445 _tdm_display_set_main_first(tdm_output **outputs, int index)
 446 {
 447         tdm_output *output_tmp = NULL;
 448
 449         if (index == 0)
 450                 return outputs;
 451
 452         output_tmp = outputs[0];
 453         outputs[0] = outputs[index];
 454         outputs[index] = output_tmp;
 455
 456         return outputs;
 457 }
 458
 459 static tdm_output **
 460 _tdm_display_get_ordered_outputs(tdm_private_display *private_display, int *count)
 461 {
 462         tdm_func_display *func_display = &private_display->func_display;
 463         tdm_output **outputs = NULL;
 464         tdm_output **new_outputs = NULL;
 465         tdm_output *output_dsi = NULL;
 466         tdm_output *output_lvds = NULL;
 467         tdm_output *output_hdmia = NULL;
 468         tdm_output *output_hdmib = NULL;
 469         int i, output_count = 0, output_connected_count = 0;
 470         int index_dsi = 0, index_lvds = 0, index_hdmia = 0, index_hdmib = 0;
 471         tdm_error ret;
 472
 473         /* don't change list order if not init time */
 474         if (private_display->outputs)
 475                 return private_display->outputs;
 476
 477         outputs = func_display->display_get_outputs(private_display->bdata, &output_count, &ret);
 478         if (ret != TDM_ERROR_NONE)
 479                 goto failed_get_outputs;
 480
 481         *count = output_count;
 482
 483         if (output_count == 0)
 484                 goto failed_get_outputs;
 485         else if (output_count == 1) {
 486                 private_display->outputs = outputs;
 487                 return outputs;
 488         }
 489
 490         /* count connected outputs */
 491         for (i = 0; i < output_count; i++) {
 492                 tdm_func_output *func_output = &private_display->func_output;
 493                 tdm_caps_output caps;
 494                 memset(&caps, 0, sizeof(tdm_caps_output));
 495
 496                 if (!func_output->output_get_capability) {
 497                         TDM_ERR("no output_get_capability()");
 498                         goto failed_get_outputs;
 499                 }
 500
 501                 ret = func_output->output_get_capability(outputs[i], &caps);
 502                 if (ret != TDM_ERROR_NONE) {
 503                         TDM_ERR("output_get_capability() failed");
 504                         goto failed_get_outputs;
 505                 }
 506
 507                 if (caps.status == TDM_OUTPUT_CONN_STATUS_CONNECTED) {
 508                         output_connected_count++;
 509
 510                         switch (caps.type) {
 511                         case TDM_OUTPUT_TYPE_DSI:
 512                                 output_dsi = outputs[i];
 513                                 index_dsi = i;
 514                                 break;
 515                         case TDM_OUTPUT_TYPE_LVDS:
 516                                 output_lvds = outputs[i];
 517                                 index_lvds = i;
 518                                 break;
 519                         case TDM_OUTPUT_TYPE_HDMIA:
 520                                 output_hdmia = outputs[i];
 521                                 index_hdmia = i;
 522                                 break;
 523                         case TDM_OUTPUT_TYPE_HDMIB:
 524                                 output_hdmib = outputs[i];
 525                                 index_hdmib = i;
 526                                 break;
 527                         default:
 528                                 break;
 529                         }
 530                 }
 531
 532                 _tdm_display_destroy_caps_output(&caps);
 533         }
 534
 535         /* ordering : main output is first */
 536         /* If there is no connected output, lvds or dsi cannot be main display. (cannot connect after booting)
 537           * But hdmi is possible, so set hdmi to main display.
 538           * If connected only one output, it is main output.
 539           * If connected outputs over 2, has priority like below.
 540           * (dsi > lvds > hdmi > else)
 541           */
 542         if (output_connected_count == 0) {
 543                 /* hdmi > dsi > lvds > else */
 544                 if (output_hdmia != NULL)
 545                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 546                 else if (output_hdmib != NULL)
 547                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 548                 else if (output_dsi != NULL)
 549                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 550                 else if (output_lvds != NULL)
 551                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 552                 else
 553                         new_outputs = outputs;
 554         } else { /* (output_connected_count > 1) */
 555                 /* dsi > lvds > hdmi > else */
 556                 if (output_dsi != NULL)
 557                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 558                 else if (output_lvds != NULL)
 559                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 560                 else if (output_hdmia != NULL)
 561                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 562                 else if (output_hdmib != NULL)
 563                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 564                 else
 565                         new_outputs = outputs;
 566         }
 567
 568         private_display->outputs = new_outputs;
 569
 570         return new_outputs;
 571
 572 failed_get_outputs:
 573         free(outputs);
 574         *count = 0;
 575         return NULL;
 576 }
 577
 578 static tdm_error
 579 _tdm_display_update_internal(tdm_private_display *private_display,
 580                                                          int only_display)
 581 {
 582         tdm_output **outputs = NULL;
 583         int output_count = 0, i;
 584         tdm_error ret = TDM_ERROR_NONE;
 585
 586         LIST_INITHEAD(&private_display->output_list);
 587         LIST_INITHEAD(&private_display->pp_list);
 588         LIST_INITHEAD(&private_display->capture_list);
 589
 590         if (!only_display) {
 591                 ret = _tdm_display_update_caps_pp(private_display, &private_display->caps_pp);
 592                 if (ret != TDM_ERROR_NONE)
 593                         goto failed_update;
 594
 595                 ret = _tdm_display_update_caps_capture(private_display,
 596                                                                                            &private_display->caps_capture);
 597                 if (ret != TDM_ERROR_NONE)
 598                         goto failed_update;
 599         }
 600
 601         outputs = _tdm_display_get_ordered_outputs(private_display, &output_count);
 602         if (!outputs)
 603                 goto failed_update;
 604
 605         for (i = 0; i < output_count; i++) {
 606                 ret = tdm_display_update_output(private_display, outputs[i], i);
 607                 if (ret != TDM_ERROR_NONE)
 608                         goto failed_update;
 609         }
 610
 611         return TDM_ERROR_NONE;
 612
 613 failed_update:
 614         _tdm_display_destroy_private_display(private_display);
 615         return ret;
 616 }
 617
 618 EXTERN tdm_error
 619 tdm_display_update(tdm_display *dpy)
 620 {
 621         tdm_private_display *private_display;
 622         tdm_error ret;
 623
 624         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, TDM_ERROR_INVALID_PARAMETER);
 625
 626         private_display = dpy;
 627         _pthread_mutex_lock(&private_display->lock);
 628
 629         ret = _tdm_display_update_internal(private_display, 1);
 630
 631         _pthread_mutex_unlock(&private_display->lock);
 632
 633         return ret;
 634 }
 635
 636 #define SUFFIX_MODULE    ".so"
 637 #define DEFAULT_MODULE   "libtdm-default"SUFFIX_MODULE
 638
 639 int tdm_debug_module;
 640 int tdm_debug_dump;
 641
 642 static tdm_private_display *g_private_display;
 643 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 644
 645 static tdm_error
 646 _tdm_display_check_module(tdm_backend_module *module)
 647 {
 648         int major, minor;
 649
 650         TDM_INFO("TDM ABI version : %d.%d",
 651                          TDM_MAJOR_VERSION, TDM_MINOR_VERSION);
 652
 653         if (!module->name) {
 654                 TDM_ERR("TDM backend doesn't have name");
 655                 return TDM_ERROR_BAD_MODULE;
 656         }
 657
 658         if (!module->vendor) {
 659                 TDM_ERR("TDM backend doesn't have vendor");
 660                 return TDM_ERROR_BAD_MODULE;
 661         }
 662
 663         major = TDM_BACKEND_GET_ABI_MAJOR(module->abi_version);
 664         minor = TDM_BACKEND_GET_ABI_MINOR(module->abi_version);
 665
 666         TDM_INFO("TDM module name: %s", module->name);
 667         TDM_INFO("'%s' vendor: %s", module->name, module->vendor);
 668         TDM_INFO("'%s' version: %d.%d", module->name, major, minor);
 669
 670         if (major != TDM_MAJOR_VERSION) {
 671                 TDM_ERR("'%s' major version mismatch, %d != %d",
 672                                 module->name, major, TDM_MAJOR_VERSION);
 673                 return TDM_ERROR_BAD_MODULE;
 674         }
 675
 676         if (minor > TDM_MINOR_VERSION) {
 677                 TDM_ERR("'%s' minor version(%d) is newer than %d",
 678                                 module->name, minor, TDM_MINOR_VERSION);
 679                 return TDM_ERROR_BAD_MODULE;
 680         }
 681
 682         if (!module->init) {
 683                 TDM_ERR("'%s' doesn't have init function", module->name);
 684                 return TDM_ERROR_BAD_MODULE;
 685         }
 686
 687         if (!module->deinit) {
 688                 TDM_ERR("'%s' doesn't have deinit function", module->name);
 689                 return TDM_ERROR_BAD_MODULE;
 690         }
 691
 692         return TDM_ERROR_NONE;
 693 }
 694
 695 static tdm_error
 696 _tdm_display_check_backend_functions(tdm_private_display *private_display)
 697 {
 698         tdm_func_display *func_display = &private_display->func_display;
 699         tdm_func_output *func_output = &private_display->func_output;
 700         tdm_func_layer *func_layer = &private_display->func_layer;
 701         tdm_error ret;
 702
 703         /* below functions should be implemented in backend side */
 704
 705         TDM_RETURN_VAL_IF_FAIL(func_display != NULL, TDM_ERROR_BAD_MODULE);
 706         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_outputs, TDM_ERROR_BAD_MODULE);
 707         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_capability, TDM_ERROR_BAD_MODULE);
 708         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_layers, TDM_ERROR_BAD_MODULE);
 709         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_capability, TDM_ERROR_BAD_MODULE);
 710
 711         ret = func_display->display_get_capability(private_display->bdata, &private_display->caps_display);
 712         if (ret != TDM_ERROR_NONE) {
 713                 TDM_ERR("display_get_capability() failed");
 714                 return TDM_ERROR_BAD_MODULE;
 715         }
 716
 717         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP) {
 718                 tdm_func_pp *func_pp = &private_display->func_pp;
 719                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_pp_capability, TDM_ERROR_BAD_MODULE);
 720                 TDM_RETURN_VAL_IF_FAIL(func_display->display_create_pp, TDM_ERROR_BAD_MODULE);
 721                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_destroy, TDM_ERROR_BAD_MODULE);
 722                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_commit, TDM_ERROR_BAD_MODULE);
 723                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_set_done_handler, TDM_ERROR_BAD_MODULE);
 724         }
 725
 726         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE) {
 727                 tdm_func_capture *func_capture = &private_display->func_capture;
 728                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capture_capability, TDM_ERROR_BAD_MODULE);
 729                 TDM_RETURN_VAL_IF_FAIL(func_output->output_create_capture, TDM_ERROR_BAD_MODULE);
 730                 TDM_RETURN_VAL_IF_FAIL(func_layer->layer_create_capture, TDM_ERROR_BAD_MODULE);
 731                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_destroy, TDM_ERROR_BAD_MODULE);
 732                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_commit, TDM_ERROR_BAD_MODULE);
 733                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_set_done_handler, TDM_ERROR_BAD_MODULE);
 734         }
 735
 736         return TDM_ERROR_NONE;
 737 }
 738
 739 static tdm_error
 740 _tdm_display_load_module_with_file(tdm_private_display *private_display,
 741                                                                    const char *file)
 742 {
 743         char path[PATH_MAX] = {0,};
 744         tdm_backend_module *module_data;
 745         void *module;
 746         tdm_error ret;
 747         double stamp;
 748
 749         snprintf(path, sizeof(path), TDM_MODULE_PATH "/%s", file);
 750
 751         stamp = tdm_helper_get_time();
 752         TDM_TRACE_BEGIN(Load_Backend);
 753
 754         module = dlopen(path, RTLD_LAZY);
 755         if (!module) {
 756                 TDM_ERR("failed to load module: %s(%s)", dlerror(), file);
 757                 TDM_TRACE_END();
 758                 return TDM_ERROR_BAD_MODULE;
 759         }
 760
 761         module_data = dlsym(module, "tdm_backend_module_data");
 762         if (!module_data) {
 763                 TDM_ERR("'%s' doesn't have data object", file);
 764                 ret = TDM_ERROR_BAD_MODULE;
 765                 TDM_TRACE_END();
 766                 goto failed_load;
 767         }
 768
 769         TDM_DBG("dlopen, dlsym time: %.3f ms", (tdm_helper_get_time() - stamp) * 1000.0);
 770
 771         private_display->module_data = module_data;
 772         private_display->module = module;
 773
 774         /* check if version, init() and deinit() are valid or not */
 775         ret = _tdm_display_check_module(module_data);
 776         if (ret != TDM_ERROR_NONE)
 777                 goto failed_load;
 778
 779         TDM_TRACE_END();
 780
 781         /* We don't care if backend_data is NULL or not. It's up to backend. */
 782         TDM_TRACE_BEGIN(Init_Backend);
 783         stamp = tdm_helper_get_time();
 784         private_display->bdata = module_data->init((tdm_display *)private_display, &ret);
 785         TDM_DBG("backend init() time: %.3f ms", (tdm_helper_get_time() - stamp) * 1000.0);
 786         TDM_TRACE_END();
 787
 788         if (ret != TDM_ERROR_NONE) {
 789                 TDM_ERR("failed to init '%s' module", module_data->name);
 790                 goto failed_load;
 791         }
 792
 793         ret = _tdm_display_check_backend_functions(private_display);
 794         if (ret != TDM_ERROR_NONE) {
 795                 module_data->deinit(private_display->bdata);
 796                 private_display->bdata = NULL;
 797                 goto failed_load;
 798         }
 799
 800         TDM_INFO("Success to load '%s' module", module_data->name);
 801
 802         return TDM_ERROR_NONE;
 803 failed_load:
 804         dlclose(module);
 805         private_display->module_data = NULL;
 806         private_display->module = NULL;
 807         return ret;
 808 }
 809
 810 static tdm_error
 811 _tdm_display_load_module(tdm_private_display *private_display)
 812 {
 813         const char *module_name;
 814         struct dirent **namelist;
 815         int n;
 816         tdm_error ret = 0;
 817
 818         module_name = getenv("TDM_MODULE");
 819         if (!module_name)
 820                 module_name = DEFAULT_MODULE;
 821
 822         /* load bufmgr priv from default lib */
 823         ret = _tdm_display_load_module_with_file(private_display, module_name);
 824         if (ret == TDM_ERROR_NONE)
 825                 return TDM_ERROR_NONE;
 826
 827         /* load bufmgr priv from configured path */
 828         n = scandir(TDM_MODULE_PATH, &namelist, 0, alphasort);
 829         if (n < 0) {
 830                 TDM_ERR("no module in '%s'\n", TDM_MODULE_PATH);
 831                 return TDM_ERROR_BAD_MODULE;
 832         }
 833
 834         ret = TDM_ERROR_BAD_MODULE;
 835         while (n--) {
 836                 if (ret < 0 && strstr(namelist[n]->d_name, SUFFIX_MODULE))
 837                         ret = _tdm_display_load_module_with_file(private_display, namelist[n]->d_name);
 838
 839                 free(namelist[n]);
 840         }
 841         free(namelist);
 842
 843         return ret;
 844 }
 845
 846 static void
 847 _tdm_display_unload_module(tdm_private_display *private_display)
 848 {
 849         if (private_display->module_data)
 850                 private_display->module_data->deinit(private_display->bdata);
 851         if (private_display->module)
 852                 dlclose(private_display->module);
 853
 854         private_display->bdata = NULL;
 855         private_display->module_data = NULL;
 856         private_display->module = NULL;
 857 }
 858
 859 EXTERN tdm_display *
 860 tdm_display_init(tdm_error *error)
 861 {
 862         tdm_private_display *private_display = NULL;
 863         const char *debug;
 864         tdm_error ret;
 865         double stamp1, stamp2, start;
 866
 867         _pthread_mutex_lock(&gLock);
 868
 869         if (g_private_display) {
 870                 g_private_display->init_count++;
 871                 _pthread_mutex_unlock(&gLock);
 872                 if (error)
 873                         *error = TDM_ERROR_NONE;
 874                 return g_private_display;
 875         }
 876
 877         start = stamp1 = tdm_helper_get_time();
 878
 879         private_display = calloc(1, sizeof(tdm_private_display));
 880         if (!private_display) {
 881                 ret = TDM_ERROR_OUT_OF_MEMORY;
 882                 TDM_ERR("'private_display != NULL' failed");
 883                 goto failed_alloc;
 884         }
 885
 886         debug = getenv("TDM_DEBUG_MODULE");
 887         if (debug)
 888                 tdm_display_enable_debug_module(debug);
 889
 890         debug = getenv("TDM_DEBUG_DUMP");
 891         if (debug)
 892                 tdm_display_enable_dump(private_display, debug, NULL, NULL);
 893
 894         debug = getenv("TDM_DEBUG_PATH");
 895         if (debug)
 896                 tdm_display_enable_path(debug);
 897
 898         if (pthread_mutex_init(&private_display->lock, NULL)) {
 899                 ret = TDM_ERROR_OPERATION_FAILED;
 900                 TDM_ERR("mutex init failed: %m");
 901                 goto failed_mutex_init;
 902         }
 903
 904         _pthread_mutex_lock(&private_display->lock);
 905
 906         stamp2 = tdm_helper_get_time();
 907         TDM_DBG("prepare init time: %.3f ms", (stamp2 - stamp1) * 1000.0);
 908         stamp1 = stamp2;
 909
 910         ret = tdm_event_loop_init(private_display);
 911         if (ret != TDM_ERROR_NONE)
 912                 goto failed_event;
 913
 914         stamp2 = tdm_helper_get_time();
 915         TDM_DBG("creating event loop time: %.3f ms", (stamp2 - stamp1) * 1000.0);
 916         stamp1 = stamp2;
 917
 918         ret = _tdm_display_load_module(private_display);
 919         if (ret != TDM_ERROR_NONE)
 920                 goto failed_load;
 921
 922         stamp2 = tdm_helper_get_time();
 923         TDM_DBG("loading backend time: %.3f ms", (stamp2 - stamp1) * 1000.0);
 924         stamp1 = stamp2;
 925
 926 #ifdef INIT_BUFMGR
 927         int tdm_drm_fd = tdm_helper_get_fd("TDM_DRM_MASTER_FD");
 928         if (tdm_drm_fd >= 0) {
 929                 private_display->bufmgr = tbm_bufmgr_init(tdm_drm_fd);
 930                 close(tdm_drm_fd);
 931                 if (!private_display->bufmgr) {
 932                         TDM_ERR("tbm_bufmgr_init failed");
 933                         goto failed_update;
 934                 } else {
 935                         TDM_INFO("tbm_bufmgr_init successed");
 936                 }
 937
 938                 stamp2 = tdm_helper_get_time();
 939                 TDM_DBG("initializing bufmgr time: %.3f ms", (stamp2 - stamp1) * 1000.0);
 940                 stamp1 = stamp2;
 941         }
 942 #endif
 943
 944         TDM_TRACE_BEGIN(Update_Display);
 945         ret = _tdm_display_update_internal(private_display, 0);
 946         TDM_TRACE_END();
 947         if (ret != TDM_ERROR_NONE)
 948                 goto failed_update;
 949
 950         stamp2 = tdm_helper_get_time();
 951         TDM_DBG("updating display time: %.3f ms", (stamp2 - stamp1) * 1000.0);
 952         stamp1 = stamp2;
 953
 954         tdm_event_loop_create_backend_source(private_display);
 955
 956         private_display->init_count = 1;
 957
 958         g_private_display = private_display;
 959
 960         if (error)
 961                 *error = TDM_ERROR_NONE;
 962
 963         _pthread_mutex_unlock(&private_display->lock);
 964         _pthread_mutex_unlock(&gLock);
 965
 966         TDM_INFO("init time: %.3f ms", (tdm_helper_get_time() - start) * 1000.0);
 967
 968         return (tdm_display *)private_display;
 969
 970 failed_update:
 971         _tdm_display_unload_module(private_display);
 972 failed_load:
 973         tdm_event_loop_deinit(private_display);
 974 failed_event:
 975         _pthread_mutex_unlock(&private_display->lock);
 976         pthread_mutex_destroy(&private_display->lock);
 977 failed_mutex_init:
 978         free(private_display);
 979 failed_alloc:
 980         if (error)
 981                 *error = ret;
 982         _pthread_mutex_unlock(&gLock);
 983         return NULL;
 984 }
 985
 986 EXTERN void
 987 tdm_display_deinit(tdm_display *dpy)
 988 {
 989         tdm_private_display *private_display = dpy;
 990
 991         if (!private_display)
 992                 return;
 993
 994         _pthread_mutex_lock(&gLock);
 995
 996         private_display->init_count--;
 997         if (private_display->init_count > 0) {
 998                 _pthread_mutex_unlock(&gLock);
 999                 return;
1000         }
1001
1002         /* dont move the position of lock/unlock. all resource should be protected
1003          * during destroying. after tdm_event_loop_deinit, we don't worry about thread
1004          * things because it's finalized.
1005          */
1006         _pthread_mutex_lock(&private_display->lock);
1007         tdm_event_loop_deinit(private_display);
1008         _pthread_mutex_unlock(&private_display->lock);
1009
1010         _tdm_display_destroy_private_display(private_display);
1011         _tdm_display_unload_module(private_display);
1012
1013 #ifdef INIT_BUFMGR
1014         if (private_display->bufmgr)
1015                 tbm_bufmgr_deinit(private_display->bufmgr);
1016 #endif
1017
1018         tdm_helper_set_fd("TDM_DRM_MASTER_FD", -1);
1019
1020         pthread_mutex_destroy(&private_display->lock);
1021         free(private_display);
1022         g_private_display = NULL;
1023
1024         if (tdm_debug_dump_dir) {
1025                 free(tdm_debug_dump_dir);
1026                 tdm_debug_dump_dir = NULL;
1027         }
1028
1029         _pthread_mutex_unlock(&gLock);
1030
1031         TDM_INFO("done");
1032 }
1033
1034 INTERN int
1035 tdm_display_check_module_abi(tdm_private_display *private_display, int abimaj, int abimin)
1036 {
1037         tdm_backend_module *module = private_display->module_data;
1038
1039         if (TDM_BACKEND_GET_ABI_MAJOR(module->abi_version) < abimaj)
1040                 return 0;
1041
1042         if (TDM_BACKEND_GET_ABI_MINOR(module->abi_version) < abimin)
1043                 return 0;
1044
1045         return 1;
1046 }
1047
1048 INTERN tdm_error
1049 tdm_display_enable_debug_module(const char*modules)
1050 {
1051         char temp[TDM_PATH_LEN];
1052         char *arg;
1053         char *end;
1054
1055         snprintf(temp, TDM_PATH_LEN, "%s", modules);
1056
1057         tdm_debug_module = 0;
1058
1059         arg = strtok_r(temp, TDM_DELIM, &end);
1060         while (arg) {
1061                 if (!strncmp(arg, "none", 4)) {
1062                         tdm_debug_module = 0;
1063                         return TDM_ERROR_NONE;
1064                 }
1065                 if (!strncmp(arg, "all", 3)) {
1066                         tdm_debug_module = 0xFFFFFFFF;
1067                         return TDM_ERROR_NONE;
1068                 }
1069                 if (!strncmp(arg, "buffer", 6))
1070                         tdm_debug_module |= TDM_DEBUG_BUFFER;
1071                 else if (!strncmp(arg, "thread", 6))
1072                         tdm_debug_module |= TDM_DEBUG_THREAD;
1073                 else if (!strncmp(arg, "mutex", 5))
1074                         tdm_debug_module |= TDM_DEBUG_MUTEX;
1075                 else if (!strncmp(arg, "vblank", 6))
1076                         tdm_debug_module |= TDM_DEBUG_VBLANK;
1077                 else
1078                         return TDM_ERROR_BAD_REQUEST;
1079
1080                 arg = strtok_r(NULL, TDM_DELIM, &end);
1081         }
1082
1083         TDM_INFO("module debugging... '%s'", modules);
1084
1085         return TDM_ERROR_NONE;
1086 }
1087
1088 INTERN tdm_error
1089 tdm_display_enable_dump(tdm_private_display *private_display, const char *dump_str, char *reply, int *len)
1090 {
1091         char temp[TDM_PATH_LEN] = {0,}, temp2[TDM_PATH_LEN] = {0,};
1092         char *path = NULL, *path2;
1093         char *arg;
1094         char *end;
1095
1096         snprintf(temp2, TDM_PATH_LEN, "%s", dump_str);
1097         path2 = strtostr(temp, TDM_PATH_LEN, temp2, "@");
1098         if (!path2 || path2[0] == '\0')
1099                 path2 = TDM_DUMP_DIR;
1100         else
1101                 path2++;
1102
1103         tdm_debug_dump = 0;
1104
1105         snprintf(temp, sizeof(temp), "%s", dump_str);
1106         arg = strtok_r(temp, ",", &end);
1107         TDM_GOTO_IF_FAIL(arg != NULL, done);
1108
1109         if (!strncmp(arg, "none", 4)) {
1110                 tdm_debug_dump = 0;
1111                 TDM_SNPRINTF(reply, len, "path: %s\n", (tdm_debug_dump_dir)?:"unknown");
1112                 if (tdm_debug_dump_dir) {
1113                         free(tdm_debug_dump_dir);
1114                         tdm_debug_dump_dir = NULL;
1115                 }
1116                 goto done;
1117         }
1118
1119         path = tdm_helper_dump_make_directory(path2, reply, len);
1120         TDM_GOTO_IF_FAIL(path != NULL, done);
1121
1122         if (!strncmp(arg, "current", 7)) {
1123                 tdm_private_output *o = NULL;
1124                 if (!private_display) {
1125                         TDM_WRN("no private_display");
1126                         goto done;
1127                 }
1128
1129                 LIST_FOR_EACH_ENTRY(o, &private_display->output_list, link) {
1130                         tdm_private_layer *l = NULL;
1131                         LIST_FOR_EACH_ENTRY(l, &o->layer_list, link) {
1132                                 char str[TDM_PATH_LEN];
1133                                 if (l->usable || l->caps.capabilities & TDM_LAYER_CAPABILITY_VIDEO)
1134                                         continue;
1135                                 snprintf(str, TDM_PATH_LEN, "layer_%d_%d", o->index, l->index);
1136                                 tdm_helper_dump_buffer_str(l->showing_buffer, path, str);
1137                         }
1138                 }
1139
1140                 TDM_SNPRINTF(reply, len, "path: %s\n", path);
1141                 goto done;
1142         }
1143
1144         TDM_SNPRINTF(reply, len, "dump: %s\n", arg);
1145
1146         while (arg) {
1147                 if (!strncmp(arg, "all", 3)) {
1148                         tdm_debug_dump = 0xFFFFFFFF;
1149                         goto done;
1150                 } else if (!strncmp(arg, "layer", 5)) {
1151                         tdm_debug_dump |= TDM_DUMP_FLAG_LAYER;
1152                 } else if (!strncmp(arg, "pp", 2)) {
1153                         tdm_debug_dump |= TDM_DUMP_FLAG_PP;
1154                 } else if (!strncmp(arg, "capture", 7)) {
1155                         tdm_debug_dump |= TDM_DUMP_FLAG_CAPTURE;
1156                 } else
1157                         goto done;
1158
1159                 arg = strtok_r(NULL, ",", &end);
1160         }
1161
1162         if (tdm_debug_dump_dir)
1163                 free(tdm_debug_dump_dir);
1164
1165         tdm_debug_dump_dir = strndup(path, TDM_PATH_LEN);
1166
1167         TDM_INFO("dump... '%s'", dump_str);
1168
1169 done:
1170         if (path)
1171                 free(path);
1172
1173         return TDM_ERROR_NONE;
1174 }
1175
1176 INTERN tdm_error
1177 tdm_display_enable_path(const char *path)
1178 {
1179         static int old_stdout = -1;
1180         char fd_name[TDM_PATH_LEN];
1181         int  log_fd = -1;
1182         FILE *log_fl;
1183
1184         if (old_stdout == -1)
1185                 old_stdout = dup(STDOUT_FILENO);
1186
1187         tdm_log_enable_dlog(0);
1188
1189         snprintf(fd_name, TDM_PATH_LEN, "%s", path);
1190
1191         log_fl = fopen(fd_name, "a");
1192         if (!log_fl) {
1193                 TDM_ERR("failed: open file(%s)\n", fd_name);
1194                 return TDM_ERROR_OPERATION_FAILED;
1195         }
1196
1197         fflush(stderr);
1198         close(STDOUT_FILENO);
1199
1200         setvbuf(log_fl, NULL, _IOLBF, 512);
1201         log_fd = fileno(log_fl);
1202
1203         dup2(log_fd, STDOUT_FILENO);
1204         fclose(log_fl);
1205
1206         return TDM_ERROR_NONE;
1207 }
1208
1209
1210 static void
1211 _tdm_display_ttrace_vblank_cb(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
1212                                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
1213 {
1214         tdm_error ret = TDM_ERROR_NONE;
1215
1216         TDM_TRACE_MARK(VBlank);
1217
1218         ret = tdm_vblank_wait(vblank, 0, 0, 1, _tdm_display_ttrace_vblank_cb, NULL);
1219         TDM_RETURN_IF_FAIL(ret == TDM_ERROR_NONE);
1220 }
1221
1222 INTERN tdm_error
1223 tdm_display_enable_ttrace_vblank(tdm_display *dpy, tdm_output *output, int enable)
1224 {
1225         static tdm_vblank *vblank = NULL;
1226         tdm_error ret = TDM_ERROR_NONE;
1227
1228         if (!enable) {
1229                 if (vblank)
1230                         tdm_vblank_destroy(vblank);
1231                 vblank = NULL;
1232                 return TDM_ERROR_NONE;
1233         } else {
1234                 const tdm_output_mode *mode = NULL;
1235
1236                 if (vblank)
1237                         return TDM_ERROR_NONE;
1238
1239                 vblank = tdm_vblank_create(dpy, output, &ret);
1240                 TDM_RETURN_VAL_IF_FAIL(vblank != NULL, ret);
1241
1242                 ret = tdm_output_get_mode(output, &mode);
1243                 TDM_GOTO_IF_FAIL(mode != NULL, enable_fail);
1244
1245                 ret = tdm_vblank_set_fps(vblank, mode->vrefresh);
1246                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, enable_fail);
1247
1248                 ret = tdm_vblank_set_enable_fake(vblank, 1);
1249                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, enable_fail);
1250
1251                 ret = tdm_vblank_wait(vblank, 0, 0, 1, _tdm_display_ttrace_vblank_cb, NULL);
1252                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, enable_fail);
1253         }
1254
1255         return TDM_ERROR_NONE;
1256
1257 enable_fail:
1258     if (vblank)
1259         tdm_vblank_destroy(vblank);
1260     vblank = NULL;
1261     return ret;
1262 }
1263