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