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,
  78                                                           unsigned long stamp)
  79 {
  80         tdm_private_output *private_output = NULL;
  81
  82         LIST_FOR_EACH_ENTRY(private_output, &private_display->output_list, link) {
  83                 if (private_output->stamp == stamp)
  84                         return private_output;
  85         }
  86
  87         return NULL;
  88 }
  89
  90 static void
  91 _tdm_display_destroy_caps_pp(tdm_caps_pp *caps_pp)
  92 {
  93         if (caps_pp->formats)
  94                 free(caps_pp->formats);
  95
  96         memset(caps_pp, 0, sizeof(tdm_caps_pp));
  97 }
  98
  99 static void
 100 _tdm_display_destroy_caps_capture(tdm_caps_capture *caps_capture)
 101 {
 102         if (caps_capture->formats)
 103                 free(caps_capture->formats);
 104
 105         memset(caps_capture, 0, sizeof(tdm_caps_capture));
 106 }
 107
 108 static void
 109 _tdm_display_destroy_caps_layer(tdm_caps_layer *caps_layer)
 110 {
 111         if (caps_layer->formats)
 112                 free(caps_layer->formats);
 113
 114         if (caps_layer->props)
 115                 free(caps_layer->props);
 116
 117         memset(caps_layer, 0, sizeof(tdm_caps_layer));
 118 }
 119
 120 static void
 121 _tdm_display_destroy_caps_output(tdm_caps_output *caps_output)
 122 {
 123         if (caps_output->modes)
 124                 free(caps_output->modes);
 125
 126         if (caps_output->props)
 127                 free(caps_output->props);
 128
 129         memset(caps_output, 0, sizeof(tdm_caps_output));
 130 }
 131
 132 static void
 133 _tdm_display_destroy_private_layer(tdm_private_layer *private_layer)
 134 {
 135         tdm_private_capture *c = NULL, *cc = NULL;
 136
 137         LIST_DEL(&private_layer->link);
 138
 139         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &private_layer->capture_list, link)
 140         tdm_capture_destroy_internal(c);
 141
 142         _tdm_display_destroy_caps_layer(&private_layer->caps);
 143
 144         free(private_layer);
 145 }
 146
 147 static void
 148 _tdm_display_destroy_private_output(tdm_private_output *private_output)
 149 {
 150         tdm_private_layer *l = NULL, *ll = NULL;
 151         tdm_private_capture *c = NULL, *cc = NULL;
 152         tdm_private_vblank_handler *v = NULL, *vv = NULL;
 153         tdm_private_commit_handler *m = NULL, *mm = NULL;
 154         tdm_private_change_handler *h = NULL, *hh = NULL;
 155
 156         LIST_DEL(&private_output->link);
 157
 158         free(private_output->layers_ptr);
 159
 160         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &private_output->vblank_handler_list, link) {
 161                 LIST_DEL(&v->link);
 162                 free(v);
 163         }
 164
 165         LIST_FOR_EACH_ENTRY_SAFE(m, mm, &private_output->commit_handler_list, link) {
 166                 LIST_DEL(&m->link);
 167                 free(m);
 168         }
 169
 170         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list_main, link) {
 171                 LIST_DEL(&h->link);
 172                 free(h);
 173         }
 174
 175         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list_sub, link) {
 176                 LIST_DEL(&h->link);
 177                 free(h);
 178         }
 179
 180         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &private_output->capture_list, link)
 181         tdm_capture_destroy_internal(c);
 182
 183         LIST_FOR_EACH_ENTRY_SAFE(l, ll, &private_output->layer_list, link)
 184         _tdm_display_destroy_private_layer(l);
 185
 186         _tdm_display_destroy_caps_output(&private_output->caps);
 187
 188         if (private_output->dpms_changed_timer)
 189                 tdm_event_loop_source_remove(private_output->dpms_changed_timer);
 190
 191         private_output->stamp = 0;
 192         free(private_output);
 193 }
 194
 195 static void
 196 _tdm_display_destroy_private_display(tdm_private_display *private_display)
 197 {
 198         tdm_private_output *o = NULL, *oo = NULL;
 199         tdm_private_pp *p = NULL, *pp = NULL;
 200
 201         free(private_display->outputs_ptr);
 202         if (private_display->outputs) {
 203                 free(private_display->outputs);
 204                 private_display->outputs = NULL;
 205         }
 206
 207         LIST_FOR_EACH_ENTRY_SAFE(p, pp, &private_display->pp_list, link)
 208         tdm_pp_destroy_internal(p);
 209
 210         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_display->output_list, link)
 211         _tdm_display_destroy_private_output(o);
 212
 213         _tdm_display_destroy_caps_pp(&private_display->caps_pp);
 214         _tdm_display_destroy_caps_capture(&private_display->caps_capture);
 215
 216         private_display->capabilities = 0;
 217         private_display->caps_display.max_layer_count = -1;
 218 }
 219
 220 static tdm_error
 221 _tdm_display_update_caps_pp(tdm_private_display *private_display,
 222                                                         tdm_caps_pp *caps)
 223 {
 224         tdm_func_display *func_display = &private_display->func_display;
 225         char buf[1024];
 226         int bufsize = sizeof(buf);
 227         char *str_buf = buf;
 228         int *len_buf = &bufsize;
 229         int i;
 230         tdm_error ret;
 231
 232         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP))
 233                 return TDM_ERROR_NONE;
 234
 235         if (!func_display->display_get_pp_capability) {
 236                 TDM_ERR("no display_get_pp_capability()");
 237                 return TDM_ERROR_BAD_MODULE;
 238         }
 239
 240         ret = func_display->display_get_pp_capability(private_display->bdata, caps);
 241         if (ret != TDM_ERROR_NONE) {
 242                 TDM_ERR("display_get_pp_capability() failed");
 243                 return TDM_ERROR_BAD_MODULE;
 244         }
 245
 246         TDM_DBG("pp capabilities: %x", caps->capabilities);
 247         buf[0] = '\0';
 248         for (i = 0; i < caps->format_count; i++)
 249                 TDM_SNPRINTF(str_buf, len_buf, "%c%c%c%c ", FOURCC_STR(caps->formats[i]));
 250         TDM_DBG("pp formats: %s", buf);
 251         TDM_DBG("pp min  : %dx%d", caps->min_w, caps->min_h);
 252         TDM_DBG("pp max  : %dx%d", caps->max_w, caps->max_h);
 253         TDM_DBG("pp align: %d", caps->preferred_align);
 254
 255         return TDM_ERROR_NONE;
 256 }
 257
 258 static tdm_error
 259 _tdm_display_update_caps_capture(tdm_private_display *private_display,
 260                                                                  tdm_caps_capture *caps)
 261 {
 262         tdm_func_display *func_display = &private_display->func_display;
 263         char buf[1024];
 264         int bufsize = sizeof(buf);
 265         char *str_buf = buf;
 266         int *len_buf = &bufsize;
 267         int i;
 268         tdm_error ret;
 269
 270         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE))
 271                 return TDM_ERROR_NONE;
 272
 273         if (!func_display->display_get_capture_capability) {
 274                 TDM_ERR("no display_get_capture_capability()");
 275                 return TDM_ERROR_BAD_MODULE;
 276         }
 277
 278         ret = func_display->display_get_capture_capability(private_display->bdata, caps);
 279         if (ret != TDM_ERROR_NONE) {
 280                 TDM_ERR("display_get_capture_capability() failed");
 281                 return TDM_ERROR_BAD_MODULE;
 282         }
 283
 284         buf[0] = '\0';
 285         for (i = 0; i < caps->format_count; i++)
 286                 TDM_SNPRINTF(str_buf, len_buf, "%c%c%c%c ", FOURCC_STR(caps->formats[i]));
 287         TDM_DBG("capture formats: %s", buf);
 288
 289         return TDM_ERROR_NONE;
 290 }
 291
 292 static tdm_error
 293 _tdm_display_update_caps_layer(tdm_private_display *private_display,
 294                                                            tdm_layer *layer_backend, tdm_caps_layer *caps)
 295 {
 296         tdm_func_layer *func_layer = &private_display->func_layer;
 297         char buf[1024];
 298         int bufsize = sizeof(buf);
 299         char *str_buf = buf;
 300         int *len_buf = &bufsize;
 301         int i;
 302         tdm_error ret;
 303
 304         if (!func_layer->layer_get_capability) {
 305                 TDM_ERR("no layer_get_capability()");
 306                 return TDM_ERROR_BAD_MODULE;
 307         }
 308
 309         ret = func_layer->layer_get_capability(layer_backend, caps);
 310         if (ret != TDM_ERROR_NONE) {
 311                 TDM_ERR("layer_get_capability() failed");
 312                 return TDM_ERROR_BAD_MODULE;
 313         }
 314
 315         TDM_DBG("layer capabilities: %x", caps->capabilities);
 316         TDM_DBG("layer zpos : %d", caps->zpos);
 317         buf[0] = '\0';
 318         for (i = 0; i < caps->format_count; i++)
 319                 TDM_SNPRINTF(str_buf, len_buf, "%c%c%c%c ", FOURCC_STR(caps->formats[i]));
 320         TDM_DBG("layer formats: %s", buf);
 321         for (i = 0; i < caps->prop_count; i++)
 322                 TDM_DBG("layer props: %d, %s", caps->props[i].id, caps->props[i].name);
 323
 324         return TDM_ERROR_NONE;
 325 }
 326
 327 static tdm_error
 328 _tdm_display_update_caps_output(tdm_private_display *private_display, int pipe,
 329                                                                 tdm_output *output_backend, tdm_caps_output *caps)
 330 {
 331         tdm_func_output *func_output = &private_display->func_output;
 332         char temp[TDM_NAME_LEN];
 333         int i;
 334         tdm_error ret;
 335
 336         if (!func_output->output_get_capability) {
 337                 TDM_ERR("no output_get_capability()");
 338                 return TDM_ERROR_BAD_MODULE;
 339         }
 340
 341         ret = func_output->output_get_capability(output_backend, caps);
 342         if (ret != TDM_ERROR_NONE) {
 343                 TDM_ERR("output_get_capability() failed");
 344                 return TDM_ERROR_BAD_MODULE;
 345         }
 346
 347         /* FIXME: Use model for tdm client to distinguish amoung outputs */
 348         snprintf(temp, TDM_NAME_LEN, "%s-%d", caps->model, pipe);
 349         snprintf(caps->model, TDM_NAME_LEN, "%s", temp);
 350
 351         TDM_DBG("output maker: %s", caps->maker);
 352         TDM_DBG("output model: %s", caps->model);
 353         TDM_DBG("output name: %s", caps->name);
 354         TDM_DBG("output status: %d", caps->status);
 355         TDM_DBG("output type : %d", caps->type);
 356         for (i = 0; i < caps->prop_count; i++)
 357                 TDM_DBG("output props: %d, %s", caps->props[i].id, caps->props[i].name);
 358         for (i = 0; i < caps->mode_count; i++) {
 359                 TDM_DBG("output modes: name(%s), clock(%d) vrefresh(%d), flags(%x), type(%d)",
 360                                 caps->modes[i].name, caps->modes[i].clock, caps->modes[i].vrefresh,
 361                                 caps->modes[i].flags, caps->modes[i].type);
 362                 TDM_DBG("\t\t %d, %d, %d, %d, %d",
 363                                 caps->modes[i].hdisplay, caps->modes[i].hsync_start, caps->modes[i].hsync_end,
 364                                 caps->modes[i].htotal, caps->modes[i].hskew);
 365                 TDM_DBG("\t\t %d, %d, %d, %d, %d",
 366                                 caps->modes[i].vdisplay, caps->modes[i].vsync_start, caps->modes[i].vsync_end,
 367                                 caps->modes[i].vtotal, caps->modes[i].vscan);
 368         }
 369         TDM_DBG("output min  : %dx%d", caps->min_w, caps->min_h);
 370         TDM_DBG("output max  : %dx%d", caps->max_w, caps->max_h);
 371         TDM_DBG("output align: %d", caps->preferred_align);
 372
 373         return TDM_ERROR_NONE;
 374 }
 375
 376 static tdm_error
 377 _tdm_display_update_layer(tdm_private_display *private_display,
 378                                                   tdm_private_output *private_output,
 379                                                   tdm_layer *layer_backend)
 380 {
 381         tdm_private_layer *private_layer;
 382         tdm_error ret;
 383
 384         private_layer = _tdm_display_find_private_layer(private_output, layer_backend);
 385         if (!private_layer) {
 386                 private_layer = calloc(1, sizeof(tdm_private_layer));
 387                 TDM_RETURN_VAL_IF_FAIL(private_layer != NULL, TDM_ERROR_OUT_OF_MEMORY);
 388
 389                 LIST_ADD(&private_layer->link, &private_output->layer_list);
 390                 private_layer->private_display = private_display;
 391                 private_layer->private_output = private_output;
 392                 private_layer->layer_backend = layer_backend;
 393
 394                 LIST_INITHEAD(&private_layer->capture_list);
 395
 396                 private_layer->usable = 1;
 397         } else
 398                 _tdm_display_destroy_caps_layer(&private_layer->caps);
 399
 400         ret = _tdm_display_update_caps_layer(private_display, layer_backend,
 401                                                                                  &private_layer->caps);
 402         if (ret != TDM_ERROR_NONE)
 403                 goto failed_update;
 404
 405         return TDM_ERROR_NONE;
 406 failed_update:
 407         _tdm_display_destroy_private_layer(private_layer);
 408         return ret;
 409 }
 410
 411 INTERN tdm_error
 412 tdm_display_update_output(tdm_private_display *private_display,
 413                                                   tdm_output *output_backend, int pipe)
 414 {
 415         tdm_func_output *func_output = &private_display->func_output;
 416         tdm_private_output *private_output = NULL;
 417         tdm_layer **layers = NULL;
 418         int layer_count = 0, i;
 419         tdm_error ret;
 420
 421         private_output = _tdm_display_find_private_output(private_display, output_backend);
 422         if (!private_output) {
 423                 private_output = calloc(1, sizeof(tdm_private_output));
 424                 TDM_RETURN_VAL_IF_FAIL(private_output != NULL, TDM_ERROR_OUT_OF_MEMORY);
 425
 426                 private_output->stamp = tdm_helper_get_time_in_millis();
 427                 while (tdm_display_find_output_stamp(private_display, private_output->stamp))
 428                         private_output->stamp++;
 429
 430                 LIST_ADDTAIL(&private_output->link, &private_display->output_list);
 431
 432                 private_output->private_display = private_display;
 433                 private_output->current_dpms_value = TDM_OUTPUT_DPMS_OFF;
 434                 private_output->output_backend = output_backend;
 435                 private_output->pipe = pipe;
 436
 437                 LIST_INITHEAD(&private_output->layer_list);
 438                 LIST_INITHEAD(&private_output->capture_list);
 439                 LIST_INITHEAD(&private_output->vblank_handler_list);
 440                 LIST_INITHEAD(&private_output->commit_handler_list);
 441                 LIST_INITHEAD(&private_output->change_handler_list_main);
 442                 LIST_INITHEAD(&private_output->change_handler_list_sub);
 443
 444                 if (func_output->output_set_status_handler) {
 445                         func_output->output_set_status_handler(private_output->output_backend,
 446                                                                                                    tdm_output_cb_status,
 447                                                                                                    private_output);
 448                         private_output->regist_change_cb = 1;
 449                 }
 450
 451         } else
 452                 _tdm_display_destroy_caps_output(&private_output->caps);
 453
 454         ret = _tdm_display_update_caps_output(private_display, pipe, output_backend,
 455                                                                                   &private_output->caps);
 456         if (ret != TDM_ERROR_NONE)
 457                 return ret;
 458
 459         layers = func_output->output_get_layers(output_backend, &layer_count, &ret);
 460         if (ret != TDM_ERROR_NONE)
 461                 goto failed_update;
 462
 463         for (i = 0; i < layer_count; i++) {
 464                 ret = _tdm_display_update_layer(private_display, private_output, layers[i]);
 465                 if (ret != TDM_ERROR_NONE)
 466                         goto failed_update;
 467         }
 468
 469         free(layers);
 470
 471         return TDM_ERROR_NONE;
 472 failed_update:
 473         _tdm_display_destroy_private_output(private_output);
 474         free(layers);
 475         return ret;
 476 }
 477
 478 static tdm_output **
 479 _tdm_display_set_main_first(tdm_output **outputs, int index)
 480 {
 481         tdm_output *output_tmp = NULL;
 482
 483         if (index == 0)
 484                 return outputs;
 485
 486         output_tmp = outputs[0];
 487         outputs[0] = outputs[index];
 488         outputs[index] = output_tmp;
 489
 490         return outputs;
 491 }
 492
 493 static tdm_output **
 494 _tdm_display_get_ordered_outputs(tdm_private_display *private_display, int *count)
 495 {
 496         tdm_func_display *func_display = &private_display->func_display;
 497         tdm_output **outputs = NULL;
 498         tdm_output **new_outputs = NULL;
 499         tdm_output *output_dsi = NULL;
 500         tdm_output *output_lvds = NULL;
 501         tdm_output *output_hdmia = NULL;
 502         tdm_output *output_hdmib = NULL;
 503         int i, output_count = 0, output_connected_count = 0;
 504         int index_dsi = 0, index_lvds = 0, index_hdmia = 0, index_hdmib = 0;
 505         tdm_error ret;
 506
 507         /* don't change list order if not init time */
 508         if (private_display->outputs)
 509                 return private_display->outputs;
 510
 511         outputs = func_display->display_get_outputs(private_display->bdata, &output_count, &ret);
 512         if (ret != TDM_ERROR_NONE)
 513                 goto failed_get_outputs;
 514
 515         *count = output_count;
 516
 517         if (output_count == 0)
 518                 goto failed_get_outputs;
 519         else if (output_count == 1) {
 520                 private_display->outputs = outputs;
 521                 return outputs;
 522         }
 523
 524         /* count connected outputs */
 525         for (i = 0; i < output_count; i++) {
 526                 tdm_func_output *func_output = &private_display->func_output;
 527                 tdm_caps_output caps;
 528                 memset(&caps, 0, sizeof(tdm_caps_output));
 529
 530                 if (!func_output->output_get_capability) {
 531                         TDM_ERR("no output_get_capability()");
 532                         goto failed_get_outputs;
 533                 }
 534
 535                 ret = func_output->output_get_capability(outputs[i], &caps);
 536                 if (ret != TDM_ERROR_NONE) {
 537                         TDM_ERR("output_get_capability() failed");
 538                         goto failed_get_outputs;
 539                 }
 540
 541                 if (caps.status == TDM_OUTPUT_CONN_STATUS_CONNECTED) {
 542                         output_connected_count++;
 543
 544                         switch (caps.type) {
 545                         case TDM_OUTPUT_TYPE_DSI:
 546                                 output_dsi = outputs[i];
 547                                 index_dsi = i;
 548                                 break;
 549                         case TDM_OUTPUT_TYPE_LVDS:
 550                                 output_lvds = outputs[i];
 551                                 index_lvds = i;
 552                                 break;
 553                         case TDM_OUTPUT_TYPE_HDMIA:
 554                                 output_hdmia = outputs[i];
 555                                 index_hdmia = i;
 556                                 break;
 557                         case TDM_OUTPUT_TYPE_HDMIB:
 558                                 output_hdmib = outputs[i];
 559                                 index_hdmib = i;
 560                                 break;
 561                         default:
 562                                 break;
 563                         }
 564                 }
 565         }
 566
 567         /* ordering : main output is first */
 568         /* If there is no connected output, lvds or dsi cannot be main display. (cannot connect after booting)
 569           * But hdmi is possible, so set hdmi to main display.
 570           * If connected only one output, it is main output.
 571           * If connected outputs over 2, has priority like below.
 572           * (dsi > lvds > hdmi > else)
 573           */
 574         if (output_connected_count == 0) {
 575                 /* hdmi > dsi > lvds > else */
 576                 if (output_hdmia != NULL)
 577                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 578                 else if (output_hdmib != NULL)
 579                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 580                 else if (output_dsi != NULL)
 581                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 582                 else if (output_lvds != NULL)
 583                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 584                 else
 585                         new_outputs = outputs;
 586         } else { /* (output_connected_count > 1) */
 587                 /* dsi > lvds > hdmi > else */
 588                 if (output_dsi != NULL)
 589                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 590                 else if (output_lvds != NULL)
 591                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 592                 else if (output_hdmia != NULL)
 593                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 594                 else if (output_hdmib != NULL)
 595                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 596                 else
 597                         new_outputs = outputs;
 598         }
 599
 600         private_display->outputs = new_outputs;
 601
 602         return new_outputs;
 603
 604 failed_get_outputs:
 605         free(outputs);
 606         *count = 0;
 607         return NULL;
 608 }
 609
 610 static tdm_error
 611 _tdm_display_update_internal(tdm_private_display *private_display,
 612                                                          int only_display)
 613 {
 614         tdm_output **outputs = NULL;
 615         int output_count = 0, i;
 616         tdm_error ret = TDM_ERROR_NONE;
 617
 618         LIST_INITHEAD(&private_display->output_list);
 619         LIST_INITHEAD(&private_display->pp_list);
 620         LIST_INITHEAD(&private_display->capture_list);
 621
 622         if (!only_display) {
 623                 ret = _tdm_display_update_caps_pp(private_display, &private_display->caps_pp);
 624                 if (ret != TDM_ERROR_NONE)
 625                         goto failed_update;
 626
 627                 ret = _tdm_display_update_caps_capture(private_display,
 628                                                                                            &private_display->caps_capture);
 629                 if (ret != TDM_ERROR_NONE)
 630                         goto failed_update;
 631         }
 632
 633         outputs = _tdm_display_get_ordered_outputs(private_display, &output_count);
 634         if (!outputs)
 635                 goto failed_update;
 636
 637         for (i = 0; i < output_count; i++) {
 638                 ret = tdm_display_update_output(private_display, outputs[i], i);
 639                 if (ret != TDM_ERROR_NONE)
 640                         goto failed_update;
 641         }
 642
 643         return TDM_ERROR_NONE;
 644
 645 failed_update:
 646         _tdm_display_destroy_private_display(private_display);
 647         return ret;
 648 }
 649
 650 EXTERN tdm_error
 651 tdm_display_update(tdm_display *dpy)
 652 {
 653         tdm_private_display *private_display;
 654         tdm_error ret;
 655
 656         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, TDM_ERROR_INVALID_PARAMETER);
 657
 658         private_display = dpy;
 659         _pthread_mutex_lock(&private_display->lock);
 660
 661         ret = _tdm_display_update_internal(private_display, 1);
 662
 663         _pthread_mutex_unlock(&private_display->lock);
 664
 665         return ret;
 666 }
 667
 668 #define SUFFIX_MODULE    ".so"
 669 #define DEFAULT_MODULE   "libtdm-default"SUFFIX_MODULE
 670
 671 int tdm_debug_buffer;
 672 int tdm_debug_thread;
 673 int tdm_debug_mutex;
 674
 675 static tdm_private_display *g_private_display;
 676 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 677
 678 static tdm_error
 679 _tdm_display_check_module(tdm_backend_module *module)
 680 {
 681         const char *name;
 682         const char *vendor;
 683         int major, minor;
 684
 685         TDM_INFO("TDM ABI version : %d.%d",
 686                          TDM_MAJOR_VERSION, TDM_MINOR_VERSION);
 687
 688         name = module->name ? module->name : "unknown";
 689         vendor = module->vendor ? module->vendor : "unknown";
 690         major = TDM_BACKEND_GET_ABI_MAJOR(module->abi_version);
 691         minor = TDM_BACKEND_GET_ABI_MINOR(module->abi_version);
 692
 693         TDM_INFO("TDM module name: %s", name);
 694         TDM_INFO("'%s' vendor: %s", name, vendor);
 695         TDM_INFO("'%s' version: %d.%d", name, major, minor);
 696
 697         if (major != TDM_MAJOR_VERSION) {
 698                 TDM_ERR("'%s' major version mismatch, %d != %d",
 699                                 name, major, TDM_MAJOR_VERSION);
 700                 return TDM_ERROR_BAD_MODULE;
 701         }
 702
 703         if (minor > TDM_MINOR_VERSION) {
 704                 TDM_ERR("'%s' minor version(%d) is newer than %d",
 705                                 name, minor, TDM_MINOR_VERSION);
 706                 return TDM_ERROR_BAD_MODULE;
 707         }
 708
 709         if (!module->init) {
 710                 TDM_ERR("'%s' doesn't have init function", name);
 711                 return TDM_ERROR_BAD_MODULE;
 712         }
 713
 714         if (!module->deinit) {
 715                 TDM_ERR("'%s' doesn't have deinit function", name);
 716                 return TDM_ERROR_BAD_MODULE;
 717         }
 718
 719         return TDM_ERROR_NONE;
 720 }
 721
 722 static tdm_error
 723 _tdm_display_check_backend_functions(tdm_private_display *private_display)
 724 {
 725         tdm_func_display *func_display = &private_display->func_display;
 726         tdm_func_output *func_output = &private_display->func_output;
 727         tdm_func_layer *func_layer = &private_display->func_layer;
 728         tdm_error ret;
 729
 730         /* below functions should be implemented in backend side */
 731
 732         TDM_RETURN_VAL_IF_FAIL(func_display != NULL, TDM_ERROR_BAD_MODULE);
 733         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capabilitiy, TDM_ERROR_BAD_MODULE);
 734         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_outputs, TDM_ERROR_BAD_MODULE);
 735         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_capability, TDM_ERROR_BAD_MODULE);
 736         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_layers, TDM_ERROR_BAD_MODULE);
 737         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_capability, TDM_ERROR_BAD_MODULE);
 738
 739         ret = func_display->display_get_capabilitiy(private_display->bdata, &private_display->caps_display);
 740         if (ret != TDM_ERROR_NONE) {
 741                 TDM_ERR("display_get_capabilitiy() failed");
 742                 return TDM_ERROR_BAD_MODULE;
 743         }
 744
 745         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP) {
 746                 tdm_func_pp *func_pp = &private_display->func_pp;
 747                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_pp_capability, TDM_ERROR_BAD_MODULE);
 748                 TDM_RETURN_VAL_IF_FAIL(func_display->display_create_pp, TDM_ERROR_BAD_MODULE);
 749                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_destroy, TDM_ERROR_BAD_MODULE);
 750                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_commit, TDM_ERROR_BAD_MODULE);
 751                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_set_done_handler, TDM_ERROR_BAD_MODULE);
 752         }
 753
 754         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE) {
 755                 tdm_func_capture *func_capture = &private_display->func_capture;
 756                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capture_capability, TDM_ERROR_BAD_MODULE);
 757                 TDM_RETURN_VAL_IF_FAIL(func_output->output_create_capture, TDM_ERROR_BAD_MODULE);
 758                 TDM_RETURN_VAL_IF_FAIL(func_layer->layer_create_capture, TDM_ERROR_BAD_MODULE);
 759                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_destroy, TDM_ERROR_BAD_MODULE);
 760                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_commit, TDM_ERROR_BAD_MODULE);
 761                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_set_done_handler, TDM_ERROR_BAD_MODULE);
 762         }
 763
 764         return TDM_ERROR_NONE;
 765 }
 766
 767 static tdm_error
 768 _tdm_display_load_module_with_file(tdm_private_display *private_display,
 769                                                                    const char *file)
 770 {
 771         char path[PATH_MAX] = {0,};
 772         tdm_backend_module *module_data;
 773         void *module;
 774         tdm_error ret;
 775
 776         snprintf(path, sizeof(path), TDM_MODULE_PATH "/%s", file);
 777
 778         TDM_TRACE_BEGIN(Load_Backend);
 779
 780         module = dlopen(path, RTLD_LAZY);
 781         if (!module) {
 782                 TDM_ERR("failed to load module: %s(%s)", dlerror(), file);
 783                 TDM_TRACE_END();
 784                 return TDM_ERROR_BAD_MODULE;
 785         }
 786
 787         module_data = dlsym(module, "tdm_backend_module_data");
 788         if (!module_data) {
 789                 TDM_ERR("'%s' doesn't have data object", file);
 790                 ret = TDM_ERROR_BAD_MODULE;
 791                 TDM_TRACE_END();
 792                 goto failed_load;
 793         }
 794
 795         private_display->module_data = module_data;
 796         private_display->module = module;
 797
 798         /* check if version, init() and deinit() are valid or not */
 799         ret = _tdm_display_check_module(module_data);
 800         if (ret != TDM_ERROR_NONE)
 801                 goto failed_load;
 802
 803         TDM_TRACE_END();
 804
 805         /* We don't care if backend_data is NULL or not. It's up to backend. */
 806         TDM_TRACE_BEGIN(Init_Backend);
 807         private_display->bdata = module_data->init((tdm_display *)private_display, &ret);
 808         TDM_TRACE_END();
 809         if (ret != TDM_ERROR_NONE) {
 810                 TDM_ERR("'%s' init failed", file);
 811                 goto failed_load;
 812         }
 813
 814         ret = _tdm_display_check_backend_functions(private_display);
 815         if (ret != TDM_ERROR_NONE) {
 816                 module_data->deinit(private_display->bdata);
 817                 private_display->bdata = NULL;
 818                 goto failed_load;
 819         }
 820
 821         TDM_INFO("Success to load module(%s)", file);
 822
 823         return TDM_ERROR_NONE;
 824 failed_load:
 825         dlclose(module);
 826         private_display->module_data = NULL;
 827         private_display->module = NULL;
 828         return ret;
 829 }
 830
 831 static tdm_error
 832 _tdm_display_load_module(tdm_private_display *private_display)
 833 {
 834         const char *module_name;
 835         struct dirent **namelist;
 836         int n;
 837         tdm_error ret = 0;
 838
 839         module_name = getenv("TDM_MODULE");
 840         if (!module_name)
 841                 module_name = DEFAULT_MODULE;
 842
 843         /* load bufmgr priv from default lib */
 844         ret = _tdm_display_load_module_with_file(private_display, module_name);
 845         if (ret == TDM_ERROR_NONE)
 846                 return TDM_ERROR_NONE;
 847
 848         /* load bufmgr priv from configured path */
 849         n = scandir(TDM_MODULE_PATH, &namelist, 0, alphasort);
 850         if (n < 0) {
 851                 TDM_ERR("no module in '%s'\n", TDM_MODULE_PATH);
 852                 return TDM_ERROR_BAD_MODULE;
 853         }
 854
 855         ret = TDM_ERROR_BAD_MODULE;
 856         while (n--) {
 857                 if (ret < 0 && strstr(namelist[n]->d_name, SUFFIX_MODULE))
 858                         ret = _tdm_display_load_module_with_file(private_display, namelist[n]->d_name);
 859
 860                 free(namelist[n]);
 861         }
 862         free(namelist);
 863
 864         return ret;
 865 }
 866
 867 static void
 868 _tdm_display_unload_module(tdm_private_display *private_display)
 869 {
 870         if (private_display->module_data)
 871                 private_display->module_data->deinit(private_display->bdata);
 872         if (private_display->module)
 873                 dlclose(private_display->module);
 874
 875         private_display->bdata = NULL;
 876         private_display->module_data = NULL;
 877         private_display->module = NULL;
 878 }
 879
 880 EXTERN tdm_display *
 881 tdm_display_init(tdm_error *error)
 882 {
 883         tdm_private_display *private_display = NULL;
 884         const char *debug;
 885         tdm_error ret;
 886
 887         _pthread_mutex_lock(&gLock);
 888
 889         if (g_private_display) {
 890                 g_private_display->init_count++;
 891                 _pthread_mutex_unlock(&gLock);
 892                 if (error)
 893                         *error = TDM_ERROR_NONE;
 894                 return g_private_display;
 895         }
 896
 897         debug = getenv("TDM_DEBUG_BUFFER");
 898         if (debug && (strstr(debug, "1")))
 899                 tdm_debug_buffer = 1;
 900
 901         debug = getenv("TDM_DEBUG_THREAD");
 902         if (debug && (strstr(debug, "1")))
 903                 tdm_debug_thread = 1;
 904
 905         debug = getenv("TDM_DEBUG_MUTEX");
 906         if (debug && (strstr(debug, "1")))
 907                 tdm_debug_mutex = 1;
 908
 909         private_display = calloc(1, sizeof(tdm_private_display));
 910         if (!private_display) {
 911                 ret = TDM_ERROR_OUT_OF_MEMORY;
 912                 TDM_ERR("'private_display != NULL' failed");
 913                 goto failed_alloc;
 914         }
 915
 916         if (pthread_mutex_init(&private_display->lock, NULL)) {
 917                 ret = TDM_ERROR_OPERATION_FAILED;
 918                 TDM_ERR("mutex init failed: %m");
 919                 goto failed_mutex_init;
 920         }
 921
 922         _pthread_mutex_lock(&private_display->lock);
 923
 924         ret = tdm_event_loop_init(private_display);
 925         if (ret != TDM_ERROR_NONE)
 926                 goto failed_event;
 927
 928         ret = _tdm_display_load_module(private_display);
 929         if (ret != TDM_ERROR_NONE)
 930                 goto failed_load;
 931
 932 #ifdef INIT_BUFMGR
 933         int tdm_drm_fd = tdm_helper_get_fd("TDM_DRM_MASTER_FD");
 934         if (tdm_drm_fd >= 0) {
 935                 private_display->bufmgr = tbm_bufmgr_init(tdm_drm_fd);
 936                 close(tdm_drm_fd);
 937                 if (!private_display->bufmgr) {
 938                         TDM_ERR("tbm_bufmgr_init failed");
 939                         goto failed_update;
 940                 } else {
 941                         TDM_INFO("tbm_bufmgr_init successed");
 942                 }
 943         }
 944 #endif
 945
 946         TDM_TRACE_BEGIN(Update_Display);
 947         ret = _tdm_display_update_internal(private_display, 0);
 948         TDM_TRACE_END();
 949         if (ret != TDM_ERROR_NONE)
 950                 goto failed_update;
 951
 952         tdm_event_loop_create_backend_source(private_display);
 953
 954         private_display->init_count = 1;
 955
 956         g_private_display = private_display;
 957
 958         if (error)
 959                 *error = TDM_ERROR_NONE;
 960
 961         _pthread_mutex_unlock(&private_display->lock);
 962         _pthread_mutex_unlock(&gLock);
 963
 964         return (tdm_display *)private_display;
 965
 966 failed_update:
 967         _tdm_display_unload_module(private_display);
 968 failed_load:
 969         tdm_event_loop_deinit(private_display);
 970 failed_event:
 971         _pthread_mutex_unlock(&private_display->lock);
 972         pthread_mutex_destroy(&private_display->lock);
 973 failed_mutex_init:
 974         free(private_display);
 975 failed_alloc:
 976         tdm_debug_buffer = 0;
 977         if (error)
 978                 *error = ret;
 979         _pthread_mutex_unlock(&gLock);
 980         return NULL;
 981 }
 982
 983 EXTERN void
 984 tdm_display_deinit(tdm_display *dpy)
 985 {
 986         tdm_private_display *private_display = dpy;
 987
 988         if (!private_display)
 989                 return;
 990
 991         _pthread_mutex_lock(&gLock);
 992
 993         private_display->init_count--;
 994         if (private_display->init_count > 0) {
 995                 _pthread_mutex_unlock(&gLock);
 996                 return;
 997         }
 998
 999         /* dont move the position of lock/unlock. all resource should be protected
1000          * during destroying. after tdm_event_loop_deinit, we don't worry about thread
1001          * things because it's finalized.
1002          */
1003         _pthread_mutex_lock(&private_display->lock);
1004         tdm_event_loop_deinit(private_display);
1005         _pthread_mutex_unlock(&private_display->lock);
1006
1007         _tdm_display_destroy_private_display(private_display);
1008         _tdm_display_unload_module(private_display);
1009
1010 #ifdef INIT_BUFMGR
1011         if (private_display->bufmgr)
1012                 tbm_bufmgr_deinit(private_display->bufmgr);
1013 #endif
1014
1015         tdm_helper_set_fd("TDM_DRM_MASTER_FD", -1);
1016
1017         pthread_mutex_destroy(&private_display->lock);
1018         free(private_display);
1019         g_private_display = NULL;
1020         tdm_debug_buffer = 0;
1021
1022         _pthread_mutex_unlock(&gLock);
1023
1024         TDM_INFO("done");
1025 }
1026
1027 INTERN int
1028 tdm_display_check_module_abi(tdm_private_display *private_display, int abimaj, int abimin)
1029 {
1030         tdm_backend_module *module = private_display->module_data;
1031
1032         if (TDM_BACKEND_GET_ABI_MAJOR(module->abi_version) < abimaj)
1033                 return 0;
1034
1035         if (TDM_BACKEND_GET_ABI_MINOR(module->abi_version) < abimin)
1036                 return 0;
1037
1038         return 1;
1039 }
1040