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         private_output->stamp = 0;
 189         free(private_output);
 190 }
 191
 192 static void
 193 _tdm_display_destroy_private_display(tdm_private_display *private_display)
 194 {
 195         tdm_private_output *o = NULL, *oo = NULL;
 196         tdm_private_pp *p = NULL, *pp = NULL;
 197
 198         free(private_display->outputs_ptr);
 199         if (private_display->outputs) {
 200                 free(private_display->outputs);
 201                 private_display->outputs = NULL;
 202         }
 203
 204         LIST_FOR_EACH_ENTRY_SAFE(p, pp, &private_display->pp_list, link)
 205         tdm_pp_destroy_internal(p);
 206
 207         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_display->output_list, link)
 208         _tdm_display_destroy_private_output(o);
 209
 210         _tdm_display_destroy_caps_pp(&private_display->caps_pp);
 211         _tdm_display_destroy_caps_capture(&private_display->caps_capture);
 212
 213         private_display->capabilities = 0;
 214         private_display->caps_display.max_layer_count = -1;
 215 }
 216
 217 static tdm_error
 218 _tdm_display_update_caps_pp(tdm_private_display *private_display,
 219                                                         tdm_caps_pp *caps)
 220 {
 221         tdm_func_display *func_display = &private_display->func_display;
 222         char buf[1024];
 223         int bufsize = sizeof(buf);
 224         char *str_buf = buf;
 225         int *len_buf = &bufsize;
 226         int i;
 227         tdm_error ret;
 228
 229         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP))
 230                 return TDM_ERROR_NONE;
 231
 232         if (!func_display->display_get_pp_capability) {
 233                 TDM_ERR("no display_get_pp_capability()");
 234                 return TDM_ERROR_BAD_MODULE;
 235         }
 236
 237         ret = func_display->display_get_pp_capability(private_display->bdata, caps);
 238         if (ret != TDM_ERROR_NONE) {
 239                 TDM_ERR("display_get_pp_capability() failed");
 240                 return TDM_ERROR_BAD_MODULE;
 241         }
 242
 243         TDM_DBG("pp capabilities: %x", caps->capabilities);
 244         buf[0] = '\0';
 245         for (i = 0; i < caps->format_count; i++)
 246                 TDM_SNPRINTF(str_buf, len_buf, "%c%c%c%c ", FOURCC_STR(caps->formats[i]));
 247         TDM_DBG("pp formats: %s", buf);
 248         TDM_DBG("pp min  : %dx%d", caps->min_w, caps->min_h);
 249         TDM_DBG("pp max  : %dx%d", caps->max_w, caps->max_h);
 250         TDM_DBG("pp align: %d", caps->preferred_align);
 251
 252         return TDM_ERROR_NONE;
 253 }
 254
 255 static tdm_error
 256 _tdm_display_update_caps_capture(tdm_private_display *private_display,
 257                                                                  tdm_caps_capture *caps)
 258 {
 259         tdm_func_display *func_display = &private_display->func_display;
 260         char buf[1024];
 261         int bufsize = sizeof(buf);
 262         char *str_buf = buf;
 263         int *len_buf = &bufsize;
 264         int i;
 265         tdm_error ret;
 266
 267         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE))
 268                 return TDM_ERROR_NONE;
 269
 270         if (!func_display->display_get_capture_capability) {
 271                 TDM_ERR("no display_get_capture_capability()");
 272                 return TDM_ERROR_BAD_MODULE;
 273         }
 274
 275         ret = func_display->display_get_capture_capability(private_display->bdata, caps);
 276         if (ret != TDM_ERROR_NONE) {
 277                 TDM_ERR("display_get_capture_capability() failed");
 278                 return TDM_ERROR_BAD_MODULE;
 279         }
 280
 281         buf[0] = '\0';
 282         for (i = 0; i < caps->format_count; i++)
 283                 TDM_SNPRINTF(str_buf, len_buf, "%c%c%c%c ", FOURCC_STR(caps->formats[i]));
 284         TDM_DBG("capture formats: %s", buf);
 285
 286         return TDM_ERROR_NONE;
 287 }
 288
 289 static tdm_error
 290 _tdm_display_update_caps_layer(tdm_private_display *private_display,
 291                                                            tdm_layer *layer_backend, tdm_caps_layer *caps)
 292 {
 293         tdm_func_layer *func_layer = &private_display->func_layer;
 294         char buf[1024];
 295         int bufsize = sizeof(buf);
 296         char *str_buf = buf;
 297         int *len_buf = &bufsize;
 298         int i;
 299         tdm_error ret;
 300
 301         if (!func_layer->layer_get_capability) {
 302                 TDM_ERR("no layer_get_capability()");
 303                 return TDM_ERROR_BAD_MODULE;
 304         }
 305
 306         ret = func_layer->layer_get_capability(layer_backend, caps);
 307         if (ret != TDM_ERROR_NONE) {
 308                 TDM_ERR("layer_get_capability() failed");
 309                 return TDM_ERROR_BAD_MODULE;
 310         }
 311
 312         TDM_DBG("layer capabilities: %x", caps->capabilities);
 313         TDM_DBG("layer zpos : %d", caps->zpos);
 314         buf[0] = '\0';
 315         for (i = 0; i < caps->format_count; i++)
 316                 TDM_SNPRINTF(str_buf, len_buf, "%c%c%c%c ", FOURCC_STR(caps->formats[i]));
 317         TDM_DBG("layer formats: %s", buf);
 318         for (i = 0; i < caps->prop_count; i++)
 319                 TDM_DBG("layer props: %d, %s", caps->props[i].id, caps->props[i].name);
 320
 321         return TDM_ERROR_NONE;
 322 }
 323
 324 static tdm_error
 325 _tdm_display_update_caps_output(tdm_private_display *private_display, int pipe,
 326                                                                 tdm_output *output_backend, tdm_caps_output *caps)
 327 {
 328         tdm_func_output *func_output = &private_display->func_output;
 329         char temp[TDM_NAME_LEN];
 330         int i;
 331         tdm_error ret;
 332
 333         if (!func_output->output_get_capability) {
 334                 TDM_ERR("no output_get_capability()");
 335                 return TDM_ERROR_BAD_MODULE;
 336         }
 337
 338         ret = func_output->output_get_capability(output_backend, caps);
 339         if (ret != TDM_ERROR_NONE) {
 340                 TDM_ERR("output_get_capability() failed");
 341                 return TDM_ERROR_BAD_MODULE;
 342         }
 343
 344         /* FIXME: Use model for tdm client to distinguish amoung outputs */
 345         snprintf(temp, TDM_NAME_LEN, "%s-%d", caps->model, pipe);
 346         snprintf(caps->model, TDM_NAME_LEN, "%s", temp);
 347
 348         TDM_DBG("output maker: %s", caps->maker);
 349         TDM_DBG("output model: %s", caps->model);
 350         TDM_DBG("output name: %s", caps->name);
 351         TDM_DBG("output status: %d", caps->status);
 352         TDM_DBG("output type : %d", caps->type);
 353         for (i = 0; i < caps->prop_count; i++)
 354                 TDM_DBG("output props: %d, %s", caps->props[i].id, caps->props[i].name);
 355         for (i = 0; i < caps->mode_count; i++) {
 356                 TDM_DBG("output modes: name(%s), clock(%d) vrefresh(%d), flags(%x), type(%d)",
 357                                 caps->modes[i].name, caps->modes[i].clock, caps->modes[i].vrefresh,
 358                                 caps->modes[i].flags, caps->modes[i].type);
 359                 TDM_DBG("\t\t %d, %d, %d, %d, %d",
 360                                 caps->modes[i].hdisplay, caps->modes[i].hsync_start, caps->modes[i].hsync_end,
 361                                 caps->modes[i].htotal, caps->modes[i].hskew);
 362                 TDM_DBG("\t\t %d, %d, %d, %d, %d",
 363                                 caps->modes[i].vdisplay, caps->modes[i].vsync_start, caps->modes[i].vsync_end,
 364                                 caps->modes[i].vtotal, caps->modes[i].vscan);
 365         }
 366         TDM_DBG("output min  : %dx%d", caps->min_w, caps->min_h);
 367         TDM_DBG("output max  : %dx%d", caps->max_w, caps->max_h);
 368         TDM_DBG("output align: %d", caps->preferred_align);
 369
 370         return TDM_ERROR_NONE;
 371 }
 372
 373 static tdm_error
 374 _tdm_display_update_layer(tdm_private_display *private_display,
 375                                                   tdm_private_output *private_output,
 376                                                   tdm_layer *layer_backend)
 377 {
 378         tdm_private_layer *private_layer;
 379         tdm_error ret;
 380
 381         private_layer = _tdm_display_find_private_layer(private_output, layer_backend);
 382         if (!private_layer) {
 383                 private_layer = calloc(1, sizeof(tdm_private_layer));
 384                 TDM_RETURN_VAL_IF_FAIL(private_layer != NULL, TDM_ERROR_OUT_OF_MEMORY);
 385
 386                 LIST_ADD(&private_layer->link, &private_output->layer_list);
 387                 private_layer->private_display = private_display;
 388                 private_layer->private_output = private_output;
 389                 private_layer->layer_backend = layer_backend;
 390
 391                 LIST_INITHEAD(&private_layer->capture_list);
 392
 393                 private_layer->usable = 1;
 394         } else
 395                 _tdm_display_destroy_caps_layer(&private_layer->caps);
 396
 397         ret = _tdm_display_update_caps_layer(private_display, layer_backend,
 398                                                                                  &private_layer->caps);
 399         if (ret != TDM_ERROR_NONE)
 400                 goto failed_update;
 401
 402         return TDM_ERROR_NONE;
 403 failed_update:
 404         _tdm_display_destroy_private_layer(private_layer);
 405         return ret;
 406 }
 407
 408 INTERN tdm_error
 409 tdm_display_update_output(tdm_private_display *private_display,
 410                                                   tdm_output *output_backend, int pipe)
 411 {
 412         tdm_func_output *func_output = &private_display->func_output;
 413         tdm_private_output *private_output = NULL;
 414         tdm_layer **layers = NULL;
 415         int layer_count = 0, i;
 416         tdm_error ret;
 417
 418         private_output = _tdm_display_find_private_output(private_display, output_backend);
 419         if (!private_output) {
 420                 private_output = calloc(1, sizeof(tdm_private_output));
 421                 TDM_RETURN_VAL_IF_FAIL(private_output != NULL, TDM_ERROR_OUT_OF_MEMORY);
 422
 423                 private_output->stamp = tdm_helper_get_time_in_millis();
 424                 while (tdm_display_find_output_stamp(private_display, private_output->stamp))
 425                         private_output->stamp++;
 426
 427                 LIST_ADDTAIL(&private_output->link, &private_display->output_list);
 428
 429                 private_output->private_display = private_display;
 430                 private_output->current_dpms_value = TDM_OUTPUT_DPMS_OFF;
 431                 private_output->output_backend = output_backend;
 432                 private_output->pipe = pipe;
 433
 434                 LIST_INITHEAD(&private_output->layer_list);
 435                 LIST_INITHEAD(&private_output->capture_list);
 436                 LIST_INITHEAD(&private_output->vblank_handler_list);
 437                 LIST_INITHEAD(&private_output->commit_handler_list);
 438                 LIST_INITHEAD(&private_output->change_handler_list_main);
 439                 LIST_INITHEAD(&private_output->change_handler_list_sub);
 440
 441                 if (func_output->output_set_status_handler) {
 442                         func_output->output_set_status_handler(private_output->output_backend,
 443                                                                                                    tdm_output_cb_status,
 444                                                                                                    private_output);
 445                         private_output->regist_change_cb = 1;
 446                 }
 447
 448         } else
 449                 _tdm_display_destroy_caps_output(&private_output->caps);
 450
 451         ret = _tdm_display_update_caps_output(private_display, pipe, output_backend,
 452                                                                                   &private_output->caps);
 453         if (ret != TDM_ERROR_NONE)
 454                 return ret;
 455
 456         layers = func_output->output_get_layers(output_backend, &layer_count, &ret);
 457         if (ret != TDM_ERROR_NONE)
 458                 goto failed_update;
 459
 460         for (i = 0; i < layer_count; i++) {
 461                 ret = _tdm_display_update_layer(private_display, private_output, layers[i]);
 462                 if (ret != TDM_ERROR_NONE)
 463                         goto failed_update;
 464         }
 465
 466         free(layers);
 467
 468         return TDM_ERROR_NONE;
 469 failed_update:
 470         _tdm_display_destroy_private_output(private_output);
 471         free(layers);
 472         return ret;
 473 }
 474
 475 static tdm_output **
 476 _tdm_display_set_main_first(tdm_output **outputs, int index)
 477 {
 478         tdm_output *output_tmp = NULL;
 479
 480         if (index == 0)
 481                 return outputs;
 482
 483         output_tmp = outputs[0];
 484         outputs[0] = outputs[index];
 485         outputs[index] = output_tmp;
 486
 487         return outputs;
 488 }
 489
 490 static tdm_output **
 491 _tdm_display_get_ordered_outputs(tdm_private_display *private_display, int *count)
 492 {
 493         tdm_func_display *func_display = &private_display->func_display;
 494         tdm_output **outputs = NULL;
 495         tdm_output **new_outputs = NULL;
 496         tdm_output *output_dsi = NULL;
 497         tdm_output *output_lvds = NULL;
 498         tdm_output *output_hdmia = NULL;
 499         tdm_output *output_hdmib = NULL;
 500         int i, output_count = 0, output_connected_count = 0;
 501         int index_dsi = 0, index_lvds = 0, index_hdmia = 0, index_hdmib = 0;
 502         tdm_error ret;
 503
 504         /* don't change list order if not init time */
 505         if (private_display->outputs)
 506                 return private_display->outputs;
 507
 508         outputs = func_display->display_get_outputs(private_display->bdata, &output_count, &ret);
 509         if (ret != TDM_ERROR_NONE)
 510                 goto failed_get_outputs;
 511
 512         *count = output_count;
 513
 514         if (output_count == 0)
 515                 goto failed_get_outputs;
 516         else if (output_count == 1) {
 517                 private_display->outputs = outputs;
 518                 return outputs;
 519         }
 520
 521         /* count connected outputs */
 522         for (i = 0; i < output_count; i++) {
 523                 tdm_func_output *func_output = &private_display->func_output;
 524                 tdm_caps_output caps;
 525                 memset(&caps, 0, sizeof(tdm_caps_output));
 526
 527                 if (!func_output->output_get_capability) {
 528                         TDM_ERR("no output_get_capability()");
 529                         goto failed_get_outputs;
 530                 }
 531
 532                 ret = func_output->output_get_capability(outputs[i], &caps);
 533                 if (ret != TDM_ERROR_NONE) {
 534                         TDM_ERR("output_get_capability() failed");
 535                         goto failed_get_outputs;
 536                 }
 537
 538                 if (caps.status == TDM_OUTPUT_CONN_STATUS_CONNECTED) {
 539                         output_connected_count++;
 540
 541                         switch (caps.type) {
 542                         case TDM_OUTPUT_TYPE_DSI:
 543                                 output_dsi = outputs[i];
 544                                 index_dsi = i;
 545                                 break;
 546                         case TDM_OUTPUT_TYPE_LVDS:
 547                                 output_lvds = outputs[i];
 548                                 index_lvds = i;
 549                                 break;
 550                         case TDM_OUTPUT_TYPE_HDMIA:
 551                                 output_hdmia = outputs[i];
 552                                 index_hdmia = i;
 553                                 break;
 554                         case TDM_OUTPUT_TYPE_HDMIB:
 555                                 output_hdmib = outputs[i];
 556                                 index_hdmib = i;
 557                                 break;
 558                         default:
 559                                 break;
 560                         }
 561                 }
 562         }
 563
 564         /* ordering : main output is first */
 565         /* If there is no connected output, lvds or dsi cannot be main display. (cannot connect after booting)
 566           * But hdmi is possible, so set hdmi to main display.
 567           * If connected only one output, it is main output.
 568           * If connected outputs over 2, has priority like below.
 569           * (dsi > lvds > hdmi > else)
 570           */
 571         if (output_connected_count == 0) {
 572                 /* hdmi > dsi > lvds > else */
 573                 if (output_hdmia != NULL)
 574                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 575                 else if (output_hdmib != NULL)
 576                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 577                 else if (output_dsi != NULL)
 578                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 579                 else if (output_lvds != NULL)
 580                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 581                 else
 582                         new_outputs = outputs;
 583         } else { /* (output_connected_count > 1) */
 584                 /* dsi > lvds > hdmi > else */
 585                 if (output_dsi != NULL)
 586                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 587                 else if (output_lvds != NULL)
 588                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 589                 else if (output_hdmia != NULL)
 590                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 591                 else if (output_hdmib != NULL)
 592                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 593                 else
 594                         new_outputs = outputs;
 595         }
 596
 597         private_display->outputs = new_outputs;
 598
 599         return new_outputs;
 600
 601 failed_get_outputs:
 602         free(outputs);
 603         *count = 0;
 604         return NULL;
 605 }
 606
 607 static tdm_error
 608 _tdm_display_update_internal(tdm_private_display *private_display,
 609                                                          int only_display)
 610 {
 611         tdm_output **outputs = NULL;
 612         int output_count = 0, i;
 613         tdm_error ret;
 614
 615         LIST_INITHEAD(&private_display->output_list);
 616         LIST_INITHEAD(&private_display->pp_list);
 617         LIST_INITHEAD(&private_display->capture_list);
 618
 619         if (!only_display) {
 620                 ret = _tdm_display_update_caps_pp(private_display, &private_display->caps_pp);
 621                 if (ret != TDM_ERROR_NONE)
 622                         goto failed_update;
 623
 624                 ret = _tdm_display_update_caps_capture(private_display,
 625                                                                                            &private_display->caps_capture);
 626                 if (ret != TDM_ERROR_NONE)
 627                         goto failed_update;
 628         }
 629
 630         outputs = _tdm_display_get_ordered_outputs(private_display, &output_count);
 631         if (!outputs)
 632                 goto failed_update;
 633
 634         for (i = 0; i < output_count; i++) {
 635                 ret = tdm_display_update_output(private_display, outputs[i], i);
 636                 if (ret != TDM_ERROR_NONE)
 637                         goto failed_update;
 638         }
 639
 640         return TDM_ERROR_NONE;
 641
 642 failed_update:
 643         _tdm_display_destroy_private_display(private_display);
 644         return ret;
 645 }
 646
 647 EXTERN tdm_error
 648 tdm_display_update(tdm_display *dpy)
 649 {
 650         tdm_private_display *private_display;
 651         tdm_error ret;
 652
 653         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, TDM_ERROR_INVALID_PARAMETER);
 654
 655         private_display = dpy;
 656         _pthread_mutex_lock(&private_display->lock);
 657
 658         ret = _tdm_display_update_internal(private_display, 1);
 659
 660         _pthread_mutex_unlock(&private_display->lock);
 661
 662         return ret;
 663 }
 664
 665 #define SUFFIX_MODULE    ".so"
 666 #define DEFAULT_MODULE   "libtdm-default"SUFFIX_MODULE
 667
 668 int tdm_debug;
 669 int tdm_debug_buffer;
 670 int tdm_debug_thread;
 671 int tdm_debug_mutex;
 672
 673 static tdm_private_display *g_private_display;
 674 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 675
 676 static tdm_error
 677 _tdm_display_check_module(tdm_backend_module *module)
 678 {
 679         const char *name;
 680         const char *vendor;
 681         int major, minor;
 682
 683         TDM_INFO("TDM ABI version : %d.%d",
 684                          TDM_MAJOR_VERSION, TDM_MINOR_VERSION);
 685
 686         name = module->name ? module->name : "unknown";
 687         vendor = module->vendor ? module->vendor : "unknown";
 688         major = TDM_BACKEND_GET_ABI_MAJOR(module->abi_version);
 689         minor = TDM_BACKEND_GET_ABI_MINOR(module->abi_version);
 690
 691         TDM_INFO("TDM module name: %s", name);
 692         TDM_INFO("'%s' vendor: %s", name, vendor);
 693         TDM_INFO("'%s' version: %d.%d", name, major, minor);
 694
 695         if (major != TDM_MAJOR_VERSION) {
 696                 TDM_ERR("'%s' major version mismatch, %d != %d",
 697                                 name, major, TDM_MAJOR_VERSION);
 698                 return TDM_ERROR_BAD_MODULE;
 699         }
 700
 701         if (minor > TDM_MINOR_VERSION) {
 702                 TDM_ERR("'%s' minor version(%d) is newer than %d",
 703                                 name, minor, TDM_MINOR_VERSION);
 704                 return TDM_ERROR_BAD_MODULE;
 705         }
 706
 707         if (!module->init) {
 708                 TDM_ERR("'%s' doesn't have init function", name);
 709                 return TDM_ERROR_BAD_MODULE;
 710         }
 711
 712         if (!module->deinit) {
 713                 TDM_ERR("'%s' doesn't have deinit function", name);
 714                 return TDM_ERROR_BAD_MODULE;
 715         }
 716
 717         return TDM_ERROR_NONE;
 718 }
 719
 720 static tdm_error
 721 _tdm_display_check_backend_functions(tdm_private_display *private_display)
 722 {
 723         tdm_func_display *func_display = &private_display->func_display;
 724         tdm_func_output *func_output = &private_display->func_output;
 725         tdm_func_layer *func_layer = &private_display->func_layer;
 726         tdm_error ret;
 727
 728         /* below functions should be implemented in backend side */
 729
 730         TDM_RETURN_VAL_IF_FAIL(func_display != NULL, TDM_ERROR_BAD_MODULE);
 731         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capabilitiy, TDM_ERROR_BAD_MODULE);
 732         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_outputs, TDM_ERROR_BAD_MODULE);
 733         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_capability, TDM_ERROR_BAD_MODULE);
 734         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_layers, TDM_ERROR_BAD_MODULE);
 735         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_capability, TDM_ERROR_BAD_MODULE);
 736
 737         ret = func_display->display_get_capabilitiy(private_display->bdata, &private_display->caps_display);
 738         if (ret != TDM_ERROR_NONE) {
 739                 TDM_ERR("display_get_capabilitiy() failed");
 740                 return TDM_ERROR_BAD_MODULE;
 741         }
 742
 743         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP) {
 744                 tdm_func_pp *func_pp = &private_display->func_pp;
 745                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_pp_capability, TDM_ERROR_BAD_MODULE);
 746                 TDM_RETURN_VAL_IF_FAIL(func_display->display_create_pp, TDM_ERROR_BAD_MODULE);
 747                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_destroy, TDM_ERROR_BAD_MODULE);
 748                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_commit, TDM_ERROR_BAD_MODULE);
 749                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_set_done_handler, TDM_ERROR_BAD_MODULE);
 750         }
 751
 752         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE) {
 753                 tdm_func_capture *func_capture = &private_display->func_capture;
 754                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capture_capability, TDM_ERROR_BAD_MODULE);
 755                 TDM_RETURN_VAL_IF_FAIL(func_output->output_create_capture, TDM_ERROR_BAD_MODULE);
 756                 TDM_RETURN_VAL_IF_FAIL(func_layer->layer_create_capture, TDM_ERROR_BAD_MODULE);
 757                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_destroy, TDM_ERROR_BAD_MODULE);
 758                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_commit, TDM_ERROR_BAD_MODULE);
 759                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_set_done_handler, TDM_ERROR_BAD_MODULE);
 760         }
 761
 762         return TDM_ERROR_NONE;
 763 }
 764
 765 static tdm_error
 766 _tdm_display_load_module_with_file(tdm_private_display *private_display,
 767                                                                    const char *file)
 768 {
 769         char path[PATH_MAX] = {0,};
 770         tdm_backend_module *module_data;
 771         void *module;
 772         tdm_error ret;
 773
 774         snprintf(path, sizeof(path), TDM_MODULE_PATH "/%s", file);
 775
 776         TDM_TRACE_BEGIN(Load_Backend);
 777
 778         module = dlopen(path, RTLD_LAZY);
 779         if (!module) {
 780                 TDM_ERR("failed to load module: %s(%s)", dlerror(), file);
 781                 TDM_TRACE_END();
 782                 return TDM_ERROR_BAD_MODULE;
 783         }
 784
 785         module_data = dlsym(module, "tdm_backend_module_data");
 786         if (!module_data) {
 787                 TDM_ERR("'%s' doesn't have data object", file);
 788                 ret = TDM_ERROR_BAD_MODULE;
 789                 TDM_TRACE_END();
 790                 goto failed_load;
 791         }
 792
 793         private_display->module_data = module_data;
 794         private_display->module = module;
 795
 796         /* check if version, init() and deinit() are valid or not */
 797         ret = _tdm_display_check_module(module_data);
 798         if (ret != TDM_ERROR_NONE)
 799                 goto failed_load;
 800
 801         TDM_TRACE_END();
 802
 803         /* We don't care if backend_data is NULL or not. It's up to backend. */
 804         TDM_TRACE_BEGIN(Init_Backend);
 805         private_display->bdata = module_data->init((tdm_display *)private_display, &ret);
 806         TDM_TRACE_END();
 807         if (ret != TDM_ERROR_NONE) {
 808                 TDM_ERR("'%s' init failed", file);
 809                 goto failed_load;
 810         }
 811
 812         ret = _tdm_display_check_backend_functions(private_display);
 813         if (ret != TDM_ERROR_NONE) {
 814                 module_data->deinit(private_display->bdata);
 815                 private_display->bdata = NULL;
 816                 goto failed_load;
 817         }
 818
 819         TDM_INFO("Success to load module(%s)", file);
 820
 821         return TDM_ERROR_NONE;
 822 failed_load:
 823         dlclose(module);
 824         private_display->module_data = NULL;
 825         private_display->module = NULL;
 826         return ret;
 827 }
 828
 829 static tdm_error
 830 _tdm_display_load_module(tdm_private_display *private_display)
 831 {
 832         const char *module_name;
 833         struct dirent **namelist;
 834         int n;
 835         tdm_error ret = 0;
 836
 837         module_name = getenv("TDM_MODULE");
 838         if (!module_name)
 839                 module_name = DEFAULT_MODULE;
 840
 841         /* load bufmgr priv from default lib */
 842         ret = _tdm_display_load_module_with_file(private_display, module_name);
 843         if (ret == TDM_ERROR_NONE)
 844                 return TDM_ERROR_NONE;
 845
 846         /* load bufmgr priv from configured path */
 847         n = scandir(TDM_MODULE_PATH, &namelist, 0, alphasort);
 848         if (n < 0) {
 849                 TDM_ERR("no module in '%s'\n", TDM_MODULE_PATH);
 850                 return TDM_ERROR_BAD_MODULE;
 851         }
 852
 853         ret = TDM_ERROR_BAD_MODULE;
 854         while (n--) {
 855                 if (ret < 0 && strstr(namelist[n]->d_name, SUFFIX_MODULE))
 856                         ret = _tdm_display_load_module_with_file(private_display, namelist[n]->d_name);
 857
 858                 free(namelist[n]);
 859         }
 860         free(namelist);
 861
 862         return ret;
 863 }
 864
 865 static void
 866 _tdm_display_unload_module(tdm_private_display *private_display)
 867 {
 868         if (private_display->module_data)
 869                 private_display->module_data->deinit(private_display->bdata);
 870         if (private_display->module)
 871                 dlclose(private_display->module);
 872
 873         private_display->bdata = NULL;
 874         private_display->module_data = NULL;
 875         private_display->module = NULL;
 876 }
 877
 878 EXTERN tdm_display *
 879 tdm_display_init(tdm_error *error)
 880 {
 881         tdm_private_display *private_display = NULL;
 882         const char *debug;
 883         tdm_error ret;
 884
 885         _pthread_mutex_lock(&gLock);
 886
 887         if (g_private_display) {
 888                 g_private_display->init_count++;
 889                 _pthread_mutex_unlock(&gLock);
 890                 if (error)
 891                         *error = TDM_ERROR_NONE;
 892                 return g_private_display;
 893         }
 894
 895         debug = getenv("TDM_DEBUG");
 896         if (debug && (strstr(debug, "1")))
 897                 tdm_debug = 1;
 898
 899         debug = getenv("TDM_DEBUG_BUFFER");
 900         if (debug && (strstr(debug, "1")))
 901                 tdm_debug_buffer = 1;
 902
 903         debug = getenv("TDM_DEBUG_THREAD");
 904         if (debug && (strstr(debug, "1")))
 905                 tdm_debug_thread = 1;
 906
 907         debug = getenv("TDM_DEBUG_MUTEX");
 908         if (debug && (strstr(debug, "1")))
 909                 tdm_debug_mutex = 1;
 910
 911         private_display = calloc(1, sizeof(tdm_private_display));
 912         if (!private_display) {
 913                 ret = TDM_ERROR_OUT_OF_MEMORY;
 914                 TDM_ERR("'private_display != NULL' failed");
 915                 goto failed_alloc;
 916         }
 917
 918         if (pthread_mutex_init(&private_display->lock, NULL)) {
 919                 ret = TDM_ERROR_OPERATION_FAILED;
 920                 TDM_ERR("mutex init failed: %m");
 921                 goto failed_mutex_init;
 922         }
 923
 924         _pthread_mutex_lock(&private_display->lock);
 925
 926         ret = tdm_event_loop_init(private_display);
 927         if (ret != TDM_ERROR_NONE)
 928                 goto failed_event;
 929
 930         ret = _tdm_display_load_module(private_display);
 931         if (ret != TDM_ERROR_NONE)
 932                 goto failed_load;
 933
 934 #ifdef INIT_BUFMGR
 935         int tdm_drm_fd = tdm_helper_get_fd("TDM_DRM_MASTER_FD");
 936         if (tdm_drm_fd >= 0) {
 937                 private_display->bufmgr = tbm_bufmgr_init(tdm_drm_fd);
 938                 close(tdm_drm_fd);
 939                 if (!private_display->bufmgr) {
 940                         TDM_ERR("tbm_bufmgr_init failed");
 941                         goto failed_update;
 942                 } else {
 943                         TDM_INFO("tbm_bufmgr_init successed");
 944                 }
 945         }
 946 #endif
 947
 948         TDM_TRACE_BEGIN(Update_Display);
 949         ret = _tdm_display_update_internal(private_display, 0);
 950         TDM_TRACE_END();
 951         if (ret != TDM_ERROR_NONE)
 952                 goto failed_update;
 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         return (tdm_display *)private_display;
 967
 968 failed_update:
 969         _tdm_display_unload_module(private_display);
 970 failed_load:
 971         tdm_event_loop_deinit(private_display);
 972 failed_event:
 973         _pthread_mutex_unlock(&private_display->lock);
 974         pthread_mutex_destroy(&private_display->lock);
 975 failed_mutex_init:
 976         free(private_display);
 977 failed_alloc:
 978         tdm_debug = 0;
 979         tdm_debug_buffer = 0;
 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         _pthread_mutex_lock(&private_display->lock);
1003
1004         tdm_event_loop_deinit(private_display);
1005
1006         _tdm_display_destroy_private_display(private_display);
1007         _tdm_display_unload_module(private_display);
1008
1009 #ifdef INIT_BUFMGR
1010         if (private_display->bufmgr)
1011                 tbm_bufmgr_deinit(private_display->bufmgr);
1012 #endif
1013
1014         tdm_helper_set_fd("TDM_DRM_MASTER_FD", -1);
1015
1016         _pthread_mutex_unlock(&private_display->lock);
1017
1018         pthread_mutex_destroy(&private_display->lock);
1019         free(private_display);
1020         g_private_display = NULL;
1021         tdm_debug = 0;
1022         tdm_debug_buffer = 0;
1023
1024         _pthread_mutex_unlock(&gLock);
1025
1026         TDM_INFO("done");
1027 }
1028
1029 INTERN int
1030 tdm_display_check_module_abi(tdm_private_display *private_display, int abimaj, int abimin)
1031 {
1032         tdm_backend_module *module = private_display->module_data;
1033
1034         if (TDM_BACKEND_GET_ABI_MAJOR(module->abi_version) < abimaj)
1035                 return 0;
1036
1037         if (TDM_BACKEND_GET_ABI_MINOR(module->abi_version) < abimin)
1038                 return 0;
1039
1040         return 1;
1041 }
1042