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         tdm_error ret;
 226
 227         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP))
 228                 return TDM_ERROR_NONE;
 229
 230         if (!func_display->display_get_pp_capability) {
 231                 TDM_ERR("no display_get_pp_capability()");
 232                 return TDM_ERROR_BAD_MODULE;
 233         }
 234
 235         ret = func_display->display_get_pp_capability(private_display->bdata, caps);
 236         if (ret != TDM_ERROR_NONE) {
 237                 TDM_ERR("display_get_pp_capability() failed");
 238                 return TDM_ERROR_BAD_MODULE;
 239         }
 240
 241         return TDM_ERROR_NONE;
 242 }
 243
 244 static tdm_error
 245 _tdm_display_update_caps_capture(tdm_private_display *private_display,
 246                                                                  tdm_caps_capture *caps)
 247 {
 248         tdm_func_display *func_display = &private_display->func_display;
 249         tdm_error ret;
 250
 251         if (!(private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE))
 252                 return TDM_ERROR_NONE;
 253
 254         if (!func_display->display_get_capture_capability) {
 255                 TDM_ERR("no display_get_capture_capability()");
 256                 return TDM_ERROR_BAD_MODULE;
 257         }
 258
 259         ret = func_display->display_get_capture_capability(private_display->bdata, caps);
 260         if (ret != TDM_ERROR_NONE) {
 261                 TDM_ERR("display_get_capture_capability() failed");
 262                 return TDM_ERROR_BAD_MODULE;
 263         }
 264
 265         return TDM_ERROR_NONE;
 266 }
 267
 268 static tdm_error
 269 _tdm_display_update_caps_layer(tdm_private_display *private_display,
 270                                                            tdm_layer *layer_backend, tdm_caps_layer *caps)
 271 {
 272         tdm_func_layer *func_layer = &private_display->func_layer;
 273         tdm_error ret;
 274
 275         if (!func_layer->layer_get_capability) {
 276                 TDM_ERR("no layer_get_capability()");
 277                 return TDM_ERROR_BAD_MODULE;
 278         }
 279
 280         ret = func_layer->layer_get_capability(layer_backend, caps);
 281         if (ret != TDM_ERROR_NONE) {
 282                 TDM_ERR("layer_get_capability() failed");
 283                 return TDM_ERROR_BAD_MODULE;
 284         }
 285
 286         return TDM_ERROR_NONE;
 287 }
 288
 289 static tdm_error
 290 _tdm_display_update_caps_output(tdm_private_display *private_display, int pipe,
 291                                                                 tdm_output *output_backend, tdm_caps_output *caps)
 292 {
 293         tdm_func_output *func_output = &private_display->func_output;
 294         char temp[TDM_NAME_LEN];
 295         tdm_error ret;
 296
 297         if (!func_output->output_get_capability) {
 298                 TDM_ERR("no output_get_capability()");
 299                 return TDM_ERROR_BAD_MODULE;
 300         }
 301
 302         ret = func_output->output_get_capability(output_backend, caps);
 303         if (ret != TDM_ERROR_NONE) {
 304                 TDM_ERR("output_get_capability() failed");
 305                 return TDM_ERROR_BAD_MODULE;
 306         }
 307
 308         /* FIXME: Use model for tdm client to distinguish amoung outputs */
 309         snprintf(temp, TDM_NAME_LEN, "%s-%d", caps->model, pipe);
 310         snprintf(caps->model, TDM_NAME_LEN, "%s", temp);
 311
 312         return TDM_ERROR_NONE;
 313 }
 314
 315 static tdm_error
 316 _tdm_display_update_layer(tdm_private_display *private_display,
 317                                                   tdm_private_output *private_output,
 318                                                   tdm_layer *layer_backend, int index)
 319 {
 320         tdm_private_layer *private_layer;
 321         tdm_error ret;
 322
 323         private_layer = _tdm_display_find_private_layer(private_output, layer_backend);
 324         if (!private_layer) {
 325                 private_layer = calloc(1, sizeof(tdm_private_layer));
 326                 TDM_RETURN_VAL_IF_FAIL(private_layer != NULL, TDM_ERROR_OUT_OF_MEMORY);
 327
 328                 LIST_ADDTAIL(&private_layer->link, &private_output->layer_list);
 329                 private_layer->index = index;
 330                 private_layer->private_display = private_display;
 331                 private_layer->private_output = private_output;
 332                 private_layer->layer_backend = layer_backend;
 333
 334                 LIST_INITHEAD(&private_layer->capture_list);
 335
 336                 private_layer->usable = 1;
 337         } else
 338                 _tdm_display_destroy_caps_layer(&private_layer->caps);
 339
 340         ret = _tdm_display_update_caps_layer(private_display, layer_backend,
 341                                                                                  &private_layer->caps);
 342         if (ret != TDM_ERROR_NONE)
 343                 goto failed_update;
 344
 345         return TDM_ERROR_NONE;
 346 failed_update:
 347         _tdm_display_destroy_private_layer(private_layer);
 348         return ret;
 349 }
 350
 351 INTERN tdm_error
 352 tdm_display_update_output(tdm_private_display *private_display,
 353                                                   tdm_output *output_backend, int pipe)
 354 {
 355         tdm_func_output *func_output = &private_display->func_output;
 356         tdm_private_output *private_output = NULL;
 357         tdm_layer **layers = NULL;
 358         int layer_count = 0, i;
 359         tdm_error ret;
 360
 361         private_output = _tdm_display_find_private_output(private_display, output_backend);
 362         if (!private_output) {
 363                 private_output = calloc(1, sizeof(tdm_private_output));
 364                 TDM_RETURN_VAL_IF_FAIL(private_output != NULL, TDM_ERROR_OUT_OF_MEMORY);
 365
 366                 private_output->stamp = tdm_helper_get_time_in_millis();
 367                 while (tdm_display_find_output_stamp(private_display, private_output->stamp))
 368                         private_output->stamp++;
 369
 370                 LIST_ADDTAIL(&private_output->link, &private_display->output_list);
 371
 372                 private_output->private_display = private_display;
 373                 private_output->current_dpms_value = TDM_OUTPUT_DPMS_OFF;
 374                 private_output->output_backend = output_backend;
 375                 private_output->pipe = pipe;
 376                 private_output->index = pipe;
 377
 378                 LIST_INITHEAD(&private_output->layer_list);
 379                 LIST_INITHEAD(&private_output->capture_list);
 380                 LIST_INITHEAD(&private_output->vblank_handler_list);
 381                 LIST_INITHEAD(&private_output->commit_handler_list);
 382                 LIST_INITHEAD(&private_output->change_handler_list_main);
 383                 LIST_INITHEAD(&private_output->change_handler_list_sub);
 384
 385                 if (func_output->output_set_status_handler) {
 386                         func_output->output_set_status_handler(private_output->output_backend,
 387                                                                                                    tdm_output_cb_status,
 388                                                                                                    private_output);
 389                         private_output->regist_change_cb = 1;
 390                 }
 391
 392         } else
 393                 _tdm_display_destroy_caps_output(&private_output->caps);
 394
 395         ret = _tdm_display_update_caps_output(private_display, pipe, output_backend,
 396                                                                                   &private_output->caps);
 397         if (ret != TDM_ERROR_NONE)
 398                 return ret;
 399
 400         layers = func_output->output_get_layers(output_backend, &layer_count, &ret);
 401         if (ret != TDM_ERROR_NONE)
 402                 goto failed_update;
 403
 404         for (i = 0; i < layer_count; i++) {
 405                 ret = _tdm_display_update_layer(private_display, private_output, layers[i], i);
 406                 if (ret != TDM_ERROR_NONE)
 407                         goto failed_update;
 408         }
 409
 410         free(layers);
 411
 412         return TDM_ERROR_NONE;
 413 failed_update:
 414         _tdm_display_destroy_private_output(private_output);
 415         free(layers);
 416         return ret;
 417 }
 418
 419 static tdm_output **
 420 _tdm_display_set_main_first(tdm_output **outputs, int index)
 421 {
 422         tdm_output *output_tmp = NULL;
 423
 424         if (index == 0)
 425                 return outputs;
 426
 427         output_tmp = outputs[0];
 428         outputs[0] = outputs[index];
 429         outputs[index] = output_tmp;
 430
 431         return outputs;
 432 }
 433
 434 static tdm_output **
 435 _tdm_display_get_ordered_outputs(tdm_private_display *private_display, int *count)
 436 {
 437         tdm_func_display *func_display = &private_display->func_display;
 438         tdm_output **outputs = NULL;
 439         tdm_output **new_outputs = NULL;
 440         tdm_output *output_dsi = NULL;
 441         tdm_output *output_lvds = NULL;
 442         tdm_output *output_hdmia = NULL;
 443         tdm_output *output_hdmib = NULL;
 444         int i, output_count = 0, output_connected_count = 0;
 445         int index_dsi = 0, index_lvds = 0, index_hdmia = 0, index_hdmib = 0;
 446         tdm_error ret;
 447
 448         /* don't change list order if not init time */
 449         if (private_display->outputs)
 450                 return private_display->outputs;
 451
 452         outputs = func_display->display_get_outputs(private_display->bdata, &output_count, &ret);
 453         if (ret != TDM_ERROR_NONE)
 454                 goto failed_get_outputs;
 455
 456         *count = output_count;
 457
 458         if (output_count == 0)
 459                 goto failed_get_outputs;
 460         else if (output_count == 1) {
 461                 private_display->outputs = outputs;
 462                 return outputs;
 463         }
 464
 465         /* count connected outputs */
 466         for (i = 0; i < output_count; i++) {
 467                 tdm_func_output *func_output = &private_display->func_output;
 468                 tdm_caps_output caps;
 469                 memset(&caps, 0, sizeof(tdm_caps_output));
 470
 471                 if (!func_output->output_get_capability) {
 472                         TDM_ERR("no output_get_capability()");
 473                         goto failed_get_outputs;
 474                 }
 475
 476                 ret = func_output->output_get_capability(outputs[i], &caps);
 477                 if (ret != TDM_ERROR_NONE) {
 478                         TDM_ERR("output_get_capability() failed");
 479                         goto failed_get_outputs;
 480                 }
 481
 482                 if (caps.status == TDM_OUTPUT_CONN_STATUS_CONNECTED) {
 483                         output_connected_count++;
 484
 485                         switch (caps.type) {
 486                         case TDM_OUTPUT_TYPE_DSI:
 487                                 output_dsi = outputs[i];
 488                                 index_dsi = i;
 489                                 break;
 490                         case TDM_OUTPUT_TYPE_LVDS:
 491                                 output_lvds = outputs[i];
 492                                 index_lvds = i;
 493                                 break;
 494                         case TDM_OUTPUT_TYPE_HDMIA:
 495                                 output_hdmia = outputs[i];
 496                                 index_hdmia = i;
 497                                 break;
 498                         case TDM_OUTPUT_TYPE_HDMIB:
 499                                 output_hdmib = outputs[i];
 500                                 index_hdmib = i;
 501                                 break;
 502                         default:
 503                                 break;
 504                         }
 505                 }
 506         }
 507
 508         /* ordering : main output is first */
 509         /* If there is no connected output, lvds or dsi cannot be main display. (cannot connect after booting)
 510           * But hdmi is possible, so set hdmi to main display.
 511           * If connected only one output, it is main output.
 512           * If connected outputs over 2, has priority like below.
 513           * (dsi > lvds > hdmi > else)
 514           */
 515         if (output_connected_count == 0) {
 516                 /* hdmi > dsi > lvds > else */
 517                 if (output_hdmia != NULL)
 518                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 519                 else if (output_hdmib != NULL)
 520                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 521                 else if (output_dsi != NULL)
 522                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 523                 else if (output_lvds != NULL)
 524                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 525                 else
 526                         new_outputs = outputs;
 527         } else { /* (output_connected_count > 1) */
 528                 /* dsi > lvds > hdmi > else */
 529                 if (output_dsi != NULL)
 530                         new_outputs = _tdm_display_set_main_first(outputs, index_dsi);
 531                 else if (output_lvds != NULL)
 532                         new_outputs = _tdm_display_set_main_first(outputs, index_lvds);
 533                 else if (output_hdmia != NULL)
 534                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmia);
 535                 else if (output_hdmib != NULL)
 536                         new_outputs = _tdm_display_set_main_first(outputs, index_hdmib);
 537                 else
 538                         new_outputs = outputs;
 539         }
 540
 541         private_display->outputs = new_outputs;
 542
 543         return new_outputs;
 544
 545 failed_get_outputs:
 546         free(outputs);
 547         *count = 0;
 548         return NULL;
 549 }
 550
 551 static tdm_error
 552 _tdm_display_update_internal(tdm_private_display *private_display,
 553                                                          int only_display)
 554 {
 555         tdm_output **outputs = NULL;
 556         int output_count = 0, i;
 557         tdm_error ret = TDM_ERROR_NONE;
 558
 559         LIST_INITHEAD(&private_display->output_list);
 560         LIST_INITHEAD(&private_display->pp_list);
 561         LIST_INITHEAD(&private_display->capture_list);
 562
 563         if (!only_display) {
 564                 ret = _tdm_display_update_caps_pp(private_display, &private_display->caps_pp);
 565                 if (ret != TDM_ERROR_NONE)
 566                         goto failed_update;
 567
 568                 ret = _tdm_display_update_caps_capture(private_display,
 569                                                                                            &private_display->caps_capture);
 570                 if (ret != TDM_ERROR_NONE)
 571                         goto failed_update;
 572         }
 573
 574         outputs = _tdm_display_get_ordered_outputs(private_display, &output_count);
 575         if (!outputs)
 576                 goto failed_update;
 577
 578         for (i = 0; i < output_count; i++) {
 579                 ret = tdm_display_update_output(private_display, outputs[i], i);
 580                 if (ret != TDM_ERROR_NONE)
 581                         goto failed_update;
 582         }
 583
 584         return TDM_ERROR_NONE;
 585
 586 failed_update:
 587         _tdm_display_destroy_private_display(private_display);
 588         return ret;
 589 }
 590
 591 EXTERN tdm_error
 592 tdm_display_update(tdm_display *dpy)
 593 {
 594         tdm_private_display *private_display;
 595         tdm_error ret;
 596
 597         TDM_RETURN_VAL_IF_FAIL(dpy != NULL, TDM_ERROR_INVALID_PARAMETER);
 598
 599         private_display = dpy;
 600         _pthread_mutex_lock(&private_display->lock);
 601
 602         ret = _tdm_display_update_internal(private_display, 1);
 603
 604         _pthread_mutex_unlock(&private_display->lock);
 605
 606         return ret;
 607 }
 608
 609 #define SUFFIX_MODULE    ".so"
 610 #define DEFAULT_MODULE   "libtdm-default"SUFFIX_MODULE
 611
 612 int tdm_debug_module;
 613 int tdm_debug_dump;
 614
 615 static tdm_private_display *g_private_display;
 616 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 617
 618 static tdm_error
 619 _tdm_display_check_module(tdm_backend_module *module)
 620 {
 621         int major, minor;
 622
 623         TDM_INFO("TDM ABI version : %d.%d",
 624                          TDM_MAJOR_VERSION, TDM_MINOR_VERSION);
 625
 626         if (!module->name) {
 627                 TDM_ERR("TDM backend doesn't have name");
 628                 return TDM_ERROR_BAD_MODULE;
 629         }
 630
 631         if (!module->vendor) {
 632                 TDM_ERR("TDM backend doesn't have vendor");
 633                 return TDM_ERROR_BAD_MODULE;
 634         }
 635
 636         major = TDM_BACKEND_GET_ABI_MAJOR(module->abi_version);
 637         minor = TDM_BACKEND_GET_ABI_MINOR(module->abi_version);
 638
 639         TDM_INFO("TDM module name: %s", module->name);
 640         TDM_INFO("'%s' vendor: %s", module->name, module->vendor);
 641         TDM_INFO("'%s' version: %d.%d", module->name, major, minor);
 642
 643         if (major != TDM_MAJOR_VERSION) {
 644                 TDM_ERR("'%s' major version mismatch, %d != %d",
 645                                 module->name, major, TDM_MAJOR_VERSION);
 646                 return TDM_ERROR_BAD_MODULE;
 647         }
 648
 649         if (minor > TDM_MINOR_VERSION) {
 650                 TDM_ERR("'%s' minor version(%d) is newer than %d",
 651                                 module->name, minor, TDM_MINOR_VERSION);
 652                 return TDM_ERROR_BAD_MODULE;
 653         }
 654
 655         if (!module->init) {
 656                 TDM_ERR("'%s' doesn't have init function", module->name);
 657                 return TDM_ERROR_BAD_MODULE;
 658         }
 659
 660         if (!module->deinit) {
 661                 TDM_ERR("'%s' doesn't have deinit function", module->name);
 662                 return TDM_ERROR_BAD_MODULE;
 663         }
 664
 665         return TDM_ERROR_NONE;
 666 }
 667
 668 static tdm_error
 669 _tdm_display_check_backend_functions(tdm_private_display *private_display)
 670 {
 671         tdm_func_display *func_display = &private_display->func_display;
 672         tdm_func_output *func_output = &private_display->func_output;
 673         tdm_func_layer *func_layer = &private_display->func_layer;
 674         tdm_error ret;
 675
 676         /* below functions should be implemented in backend side */
 677
 678         TDM_RETURN_VAL_IF_FAIL(func_display != NULL, TDM_ERROR_BAD_MODULE);
 679         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capabilitiy, TDM_ERROR_BAD_MODULE);
 680         TDM_RETURN_VAL_IF_FAIL(func_display->display_get_outputs, TDM_ERROR_BAD_MODULE);
 681         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_capability, TDM_ERROR_BAD_MODULE);
 682         TDM_RETURN_VAL_IF_FAIL(func_output->output_get_layers, TDM_ERROR_BAD_MODULE);
 683         TDM_RETURN_VAL_IF_FAIL(func_layer->layer_get_capability, TDM_ERROR_BAD_MODULE);
 684
 685         ret = func_display->display_get_capabilitiy(private_display->bdata, &private_display->caps_display);
 686         if (ret != TDM_ERROR_NONE) {
 687                 TDM_ERR("display_get_capabilitiy() failed");
 688                 return TDM_ERROR_BAD_MODULE;
 689         }
 690
 691         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_PP) {
 692                 tdm_func_pp *func_pp = &private_display->func_pp;
 693                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_pp_capability, TDM_ERROR_BAD_MODULE);
 694                 TDM_RETURN_VAL_IF_FAIL(func_display->display_create_pp, TDM_ERROR_BAD_MODULE);
 695                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_destroy, TDM_ERROR_BAD_MODULE);
 696                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_commit, TDM_ERROR_BAD_MODULE);
 697                 TDM_RETURN_VAL_IF_FAIL(func_pp->pp_set_done_handler, TDM_ERROR_BAD_MODULE);
 698         }
 699
 700         if (private_display->capabilities & TDM_DISPLAY_CAPABILITY_CAPTURE) {
 701                 tdm_func_capture *func_capture = &private_display->func_capture;
 702                 TDM_RETURN_VAL_IF_FAIL(func_display->display_get_capture_capability, TDM_ERROR_BAD_MODULE);
 703                 TDM_RETURN_VAL_IF_FAIL(func_output->output_create_capture, TDM_ERROR_BAD_MODULE);
 704                 TDM_RETURN_VAL_IF_FAIL(func_layer->layer_create_capture, TDM_ERROR_BAD_MODULE);
 705                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_destroy, TDM_ERROR_BAD_MODULE);
 706                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_commit, TDM_ERROR_BAD_MODULE);
 707                 TDM_RETURN_VAL_IF_FAIL(func_capture->capture_set_done_handler, TDM_ERROR_BAD_MODULE);
 708         }
 709
 710         return TDM_ERROR_NONE;
 711 }
 712
 713 static tdm_error
 714 _tdm_display_load_module_with_file(tdm_private_display *private_display,
 715                                                                    const char *file)
 716 {
 717         char path[PATH_MAX] = {0,};
 718         tdm_backend_module *module_data;
 719         void *module;
 720         tdm_error ret;
 721
 722         snprintf(path, sizeof(path), TDM_MODULE_PATH "/%s", file);
 723
 724         TDM_TRACE_BEGIN(Load_Backend);
 725
 726         module = dlopen(path, RTLD_LAZY);
 727         if (!module) {
 728                 TDM_ERR("failed to load module: %s(%s)", dlerror(), file);
 729                 TDM_TRACE_END();
 730                 return TDM_ERROR_BAD_MODULE;
 731         }
 732
 733         module_data = dlsym(module, "tdm_backend_module_data");
 734         if (!module_data) {
 735                 TDM_ERR("'%s' doesn't have data object", file);
 736                 ret = TDM_ERROR_BAD_MODULE;
 737                 TDM_TRACE_END();
 738                 goto failed_load;
 739         }
 740
 741         private_display->module_data = module_data;
 742         private_display->module = module;
 743
 744         /* check if version, init() and deinit() are valid or not */
 745         ret = _tdm_display_check_module(module_data);
 746         if (ret != TDM_ERROR_NONE)
 747                 goto failed_load;
 748
 749         TDM_TRACE_END();
 750
 751         /* We don't care if backend_data is NULL or not. It's up to backend. */
 752         TDM_TRACE_BEGIN(Init_Backend);
 753         private_display->bdata = module_data->init((tdm_display *)private_display, &ret);
 754         TDM_TRACE_END();
 755         if (ret != TDM_ERROR_NONE) {
 756                 TDM_ERR("'%s' init failed", file);
 757                 goto failed_load;
 758         }
 759
 760         ret = _tdm_display_check_backend_functions(private_display);
 761         if (ret != TDM_ERROR_NONE) {
 762                 module_data->deinit(private_display->bdata);
 763                 private_display->bdata = NULL;
 764                 goto failed_load;
 765         }
 766
 767         TDM_INFO("Success to load module(%s)", file);
 768
 769         return TDM_ERROR_NONE;
 770 failed_load:
 771         dlclose(module);
 772         private_display->module_data = NULL;
 773         private_display->module = NULL;
 774         return ret;
 775 }
 776
 777 static tdm_error
 778 _tdm_display_load_module(tdm_private_display *private_display)
 779 {
 780         const char *module_name;
 781         struct dirent **namelist;
 782         int n;
 783         tdm_error ret = 0;
 784
 785         module_name = getenv("TDM_MODULE");
 786         if (!module_name)
 787                 module_name = DEFAULT_MODULE;
 788
 789         /* load bufmgr priv from default lib */
 790         ret = _tdm_display_load_module_with_file(private_display, module_name);
 791         if (ret == TDM_ERROR_NONE)
 792                 return TDM_ERROR_NONE;
 793
 794         /* load bufmgr priv from configured path */
 795         n = scandir(TDM_MODULE_PATH, &namelist, 0, alphasort);
 796         if (n < 0) {
 797                 TDM_ERR("no module in '%s'\n", TDM_MODULE_PATH);
 798                 return TDM_ERROR_BAD_MODULE;
 799         }
 800
 801         ret = TDM_ERROR_BAD_MODULE;
 802         while (n--) {
 803                 if (ret < 0 && strstr(namelist[n]->d_name, SUFFIX_MODULE))
 804                         ret = _tdm_display_load_module_with_file(private_display, namelist[n]->d_name);
 805
 806                 free(namelist[n]);
 807         }
 808         free(namelist);
 809
 810         return ret;
 811 }
 812
 813 static void
 814 _tdm_display_unload_module(tdm_private_display *private_display)
 815 {
 816         if (private_display->module_data)
 817                 private_display->module_data->deinit(private_display->bdata);
 818         if (private_display->module)
 819                 dlclose(private_display->module);
 820
 821         private_display->bdata = NULL;
 822         private_display->module_data = NULL;
 823         private_display->module = NULL;
 824 }
 825
 826 EXTERN tdm_display *
 827 tdm_display_init(tdm_error *error)
 828 {
 829         tdm_private_display *private_display = NULL;
 830         const char *debug;
 831         tdm_error ret;
 832
 833         _pthread_mutex_lock(&gLock);
 834
 835         if (g_private_display) {
 836                 g_private_display->init_count++;
 837                 _pthread_mutex_unlock(&gLock);
 838                 if (error)
 839                         *error = TDM_ERROR_NONE;
 840                 return g_private_display;
 841         }
 842
 843         private_display = calloc(1, sizeof(tdm_private_display));
 844         if (!private_display) {
 845                 ret = TDM_ERROR_OUT_OF_MEMORY;
 846                 TDM_ERR("'private_display != NULL' failed");
 847                 goto failed_alloc;
 848         }
 849
 850         debug = getenv("TDM_DEBUG_MODULE");
 851         if (debug)
 852                 tdm_display_enable_debug_module(debug);
 853
 854         debug = getenv("TDM_DEBUG_DUMP");
 855         if (debug)
 856                 tdm_display_enable_dump(private_display, debug, NULL, NULL);
 857
 858         debug = getenv("TDM_DEBUG_PATH");
 859         if (debug)
 860                 tdm_display_enable_path(debug);
 861
 862         if (pthread_mutex_init(&private_display->lock, NULL)) {
 863                 ret = TDM_ERROR_OPERATION_FAILED;
 864                 TDM_ERR("mutex init failed: %m");
 865                 goto failed_mutex_init;
 866         }
 867
 868         _pthread_mutex_lock(&private_display->lock);
 869
 870         ret = tdm_event_loop_init(private_display);
 871         if (ret != TDM_ERROR_NONE)
 872                 goto failed_event;
 873
 874         ret = _tdm_display_load_module(private_display);
 875         if (ret != TDM_ERROR_NONE)
 876                 goto failed_load;
 877
 878 #ifdef INIT_BUFMGR
 879         int tdm_drm_fd = tdm_helper_get_fd("TDM_DRM_MASTER_FD");
 880         if (tdm_drm_fd >= 0) {
 881                 private_display->bufmgr = tbm_bufmgr_init(tdm_drm_fd);
 882                 close(tdm_drm_fd);
 883                 if (!private_display->bufmgr) {
 884                         TDM_ERR("tbm_bufmgr_init failed");
 885                         goto failed_update;
 886                 } else {
 887                         TDM_INFO("tbm_bufmgr_init successed");
 888                 }
 889         }
 890 #endif
 891
 892         TDM_TRACE_BEGIN(Update_Display);
 893         ret = _tdm_display_update_internal(private_display, 0);
 894         TDM_TRACE_END();
 895         if (ret != TDM_ERROR_NONE)
 896                 goto failed_update;
 897
 898         tdm_event_loop_create_backend_source(private_display);
 899
 900         private_display->init_count = 1;
 901
 902         g_private_display = private_display;
 903
 904         if (error)
 905                 *error = TDM_ERROR_NONE;
 906
 907         _pthread_mutex_unlock(&private_display->lock);
 908         _pthread_mutex_unlock(&gLock);
 909
 910         return (tdm_display *)private_display;
 911
 912 failed_update:
 913         _tdm_display_unload_module(private_display);
 914 failed_load:
 915         tdm_event_loop_deinit(private_display);
 916 failed_event:
 917         _pthread_mutex_unlock(&private_display->lock);
 918         pthread_mutex_destroy(&private_display->lock);
 919 failed_mutex_init:
 920         free(private_display);
 921 failed_alloc:
 922         if (error)
 923                 *error = ret;
 924         _pthread_mutex_unlock(&gLock);
 925         return NULL;
 926 }
 927
 928 EXTERN void
 929 tdm_display_deinit(tdm_display *dpy)
 930 {
 931         tdm_private_display *private_display = dpy;
 932
 933         if (!private_display)
 934                 return;
 935
 936         _pthread_mutex_lock(&gLock);
 937
 938         private_display->init_count--;
 939         if (private_display->init_count > 0) {
 940                 _pthread_mutex_unlock(&gLock);
 941                 return;
 942         }
 943
 944         /* dont move the position of lock/unlock. all resource should be protected
 945          * during destroying. after tdm_event_loop_deinit, we don't worry about thread
 946          * things because it's finalized.
 947          */
 948         _pthread_mutex_lock(&private_display->lock);
 949         tdm_event_loop_deinit(private_display);
 950         _pthread_mutex_unlock(&private_display->lock);
 951
 952         _tdm_display_destroy_private_display(private_display);
 953         _tdm_display_unload_module(private_display);
 954
 955 #ifdef INIT_BUFMGR
 956         if (private_display->bufmgr)
 957                 tbm_bufmgr_deinit(private_display->bufmgr);
 958 #endif
 959
 960         tdm_helper_set_fd("TDM_DRM_MASTER_FD", -1);
 961
 962         pthread_mutex_destroy(&private_display->lock);
 963         free(private_display);
 964         g_private_display = NULL;
 965
 966         _pthread_mutex_unlock(&gLock);
 967
 968         TDM_INFO("done");
 969 }
 970
 971 INTERN int
 972 tdm_display_check_module_abi(tdm_private_display *private_display, int abimaj, int abimin)
 973 {
 974         tdm_backend_module *module = private_display->module_data;
 975
 976         if (TDM_BACKEND_GET_ABI_MAJOR(module->abi_version) < abimaj)
 977                 return 0;
 978
 979         if (TDM_BACKEND_GET_ABI_MINOR(module->abi_version) < abimin)
 980                 return 0;
 981
 982         return 1;
 983 }
 984
 985 INTERN tdm_error
 986 tdm_display_enable_debug_module(const char*modules)
 987 {
 988         char temp[TDM_PATH_LEN];
 989         char *arg;
 990         char *end;
 991
 992         snprintf(temp, TDM_PATH_LEN, "%s", modules);
 993
 994         tdm_debug_module = 0;
 995
 996         arg = strtok_r(temp, TDM_DELIM, &end);
 997         while (arg) {
 998                 if (!strncmp(arg, "none", 4)) {
 999                         tdm_debug_module = 0;
1000                         return TDM_ERROR_NONE;
1001                 }
1002                 if (!strncmp(arg, "all", 3)) {
1003                         tdm_debug_module = 0xFFFFFFFF;
1004                         return TDM_ERROR_NONE;
1005                 }
1006                 if (!strncmp(arg, "buffer", 6))
1007                         tdm_debug_module |= TDM_DEBUG_BUFFER;
1008                 else if (!strncmp(arg, "thread", 6))
1009                         tdm_debug_module |= TDM_DEBUG_THREAD;
1010                 else if (!strncmp(arg, "mutex", 5))
1011                         tdm_debug_module |= TDM_DEBUG_MUTEX;
1012                 else if (!strncmp(arg, "vblank", 6))
1013                         tdm_debug_module |= TDM_DEBUG_VBLANK;
1014                 else
1015                         return TDM_ERROR_BAD_REQUEST;
1016
1017                 arg = strtok_r(NULL, TDM_DELIM, &end);
1018         }
1019
1020         TDM_INFO("module debugging... '%s'", modules);
1021
1022         return TDM_ERROR_NONE;
1023 }
1024
1025 INTERN tdm_error
1026 tdm_display_enable_dump(tdm_private_display *private_display, const char *dump_str, char *reply, int *len)
1027 {
1028         char temp[TDM_PATH_LEN] = {0,}, temp2[TDM_PATH_LEN] = {0,};
1029         char *path, *path2;
1030         char *arg;
1031         char *end;
1032
1033         snprintf(temp2, TDM_PATH_LEN, "%s", dump_str);
1034         path2 = strtostr(temp, TDM_PATH_LEN, temp2, "@");
1035         if (!path2 || path2[0] == '\0')
1036                 path2 = TDM_DUMP_DIR;
1037         else
1038                 path2++;
1039
1040         path = tdm_helper_dump_make_directory(path2, reply, len);
1041         TDM_GOTO_IF_FAIL(path != NULL, done);
1042
1043         tdm_debug_dump = 0;
1044
1045         snprintf(temp, sizeof(temp), "%s", dump_str);
1046         arg = strtok_r(temp, ",", &end);
1047
1048         if (!strncmp(arg, "none", 4)) {
1049                 tdm_debug_dump = 0;
1050                 if (tdm_debug_dump_dir) {
1051                         free(tdm_debug_dump_dir);
1052                         tdm_debug_dump_dir = NULL;
1053                 }
1054                 TDM_SNPRINTF(reply, len, "path: %s\n", path);
1055                 goto done;
1056         }
1057
1058         if (!strncmp(arg, "current", 7)) {
1059                 tdm_private_output *o = NULL;
1060                 if (!private_display) {
1061                         TDM_WRN("no private_display");
1062                         goto done;
1063                 }
1064
1065                 LIST_FOR_EACH_ENTRY(o, &private_display->output_list, link) {
1066                         tdm_private_layer *l = NULL;
1067                         LIST_FOR_EACH_ENTRY(l, &o->layer_list, link) {
1068                                 char str[TDM_PATH_LEN];
1069                                 if (l->usable)
1070                                         continue;
1071                                 snprintf(str, TDM_PATH_LEN, "layer_%d_%d", o->index, l->index);
1072                                 tdm_helper_dump_buffer_str(l->showing_buffer, path, str);
1073                         }
1074                 }
1075
1076                 TDM_SNPRINTF(reply, len, "path: %s\n", path);
1077                 goto done;
1078         }
1079
1080         TDM_SNPRINTF(reply, len, "dump: %s\n", arg);
1081
1082         while (arg) {
1083                 if (!strncmp(arg, "all", 3)) {
1084                         tdm_debug_dump = 0xFFFFFFFF;
1085                         goto done;
1086                 } else if (!strncmp(arg, "layer", 5)) {
1087                         tdm_debug_dump |= TDM_DUMP_FLAG_LAYER;
1088                 } else if (!strncmp(arg, "pp", 2)) {
1089                         tdm_debug_dump |= TDM_DUMP_FLAG_PP;
1090                 } else if (!strncmp(arg, "capture", 7)) {
1091                         tdm_debug_dump |= TDM_DUMP_FLAG_CAPTURE;
1092                 } else
1093                         goto done;
1094
1095                 arg = strtok_r(NULL, ",", &end);
1096         }
1097
1098         if (tdm_debug_dump_dir)
1099                 free(tdm_debug_dump_dir);
1100
1101         tdm_debug_dump_dir = strndup(path, TDM_PATH_LEN);
1102
1103         TDM_INFO("dump... '%s'", dump_str);
1104
1105 done:
1106         free(path);
1107         return TDM_ERROR_NONE;
1108 }
1109
1110 INTERN tdm_error
1111 tdm_display_enable_path(const char *path)
1112 {
1113         static int old_stdout = -1;
1114         char fd_name[TDM_PATH_LEN];
1115         int  log_fd = -1;
1116         FILE *log_fl;
1117
1118         if (old_stdout == -1)
1119                 old_stdout = dup(STDOUT_FILENO);
1120
1121         tdm_log_enable_dlog(0);
1122
1123         snprintf(fd_name, TDM_PATH_LEN, "%s", path);
1124
1125         log_fl = fopen(fd_name, "a");
1126         if (!log_fl) {
1127                 TDM_ERR("failed: open file(%s)\n", fd_name);
1128                 return TDM_ERROR_OPERATION_FAILED;
1129         }
1130
1131         fflush(stderr);
1132         close(STDOUT_FILENO);
1133
1134         setvbuf(log_fl, NULL, _IOLBF, 512);
1135         log_fd = fileno(log_fl);
1136
1137         dup2(log_fd, STDOUT_FILENO);
1138         fclose(log_fl);
1139
1140         return TDM_ERROR_NONE;
1141 }