src/tdm_output.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 #define COUNT_MAX   10
  46
  47 #define OUTPUT_FUNC_ENTRY() \
  48         tdm_private_display *private_display; \
  49         tdm_private_output *private_output; \
  50         tdm_error ret = TDM_ERROR_NONE; /* default TDM_ERROR_NONE */\
  51         TDM_RETURN_VAL_IF_FAIL(output != NULL, TDM_ERROR_INVALID_PARAMETER); \
  52         private_output = (tdm_private_output*)output; \
  53         private_display = private_output->private_display
  54
  55 #define OUTPUT_FUNC_ENTRY_ERROR() \
  56         tdm_private_display *private_display; \
  57         tdm_private_output *private_output; \
  58         tdm_error ret = TDM_ERROR_NONE; /* default TDM_ERROR_NONE */\
  59         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL); \
  60         private_output = (tdm_private_output*)output; \
  61         private_display = private_output->private_display
  62
  63 EXTERN tdm_error
  64 tdm_output_get_model_info(tdm_output *output, const char **maker,
  65                                                   const char **model, const char **name)
  66 {
  67         OUTPUT_FUNC_ENTRY();
  68
  69         _pthread_mutex_lock(&private_display->lock);
  70
  71         if (maker)
  72                 *maker = private_output->caps.maker;
  73         if (model)
  74                 *model = private_output->caps.model;
  75         if (name)
  76                 *name = private_output->caps.name;
  77
  78         _pthread_mutex_unlock(&private_display->lock);
  79
  80         return ret;
  81 }
  82
  83 EXTERN tdm_error
  84 tdm_output_get_capabilities(tdm_output *output, tdm_output_capability *capabilities)
  85 {
  86         OUTPUT_FUNC_ENTRY();
  87
  88         TDM_RETURN_VAL_IF_FAIL(capabilities != NULL, TDM_ERROR_INVALID_PARAMETER);
  89
  90         _pthread_mutex_lock(&private_display->lock);
  91
  92         *capabilities = private_output->caps.capabilities;
  93
  94         _pthread_mutex_unlock(&private_display->lock);
  95
  96         return ret;
  97 }
  98
  99 EXTERN tdm_error
 100 tdm_output_get_conn_status(tdm_output *output, tdm_output_conn_status *status)
 101 {
 102         OUTPUT_FUNC_ENTRY();
 103
 104         TDM_RETURN_VAL_IF_FAIL(status != NULL, TDM_ERROR_INVALID_PARAMETER);
 105
 106         _pthread_mutex_lock(&private_display->lock);
 107
 108         *status = private_output->caps.status;
 109
 110         _pthread_mutex_unlock(&private_display->lock);
 111
 112         return ret;
 113 }
 114
 115 static void
 116 _tdm_output_update(tdm_output *output_backend, void *user_data)
 117 {
 118         tdm_private_display *private_display;
 119         tdm_private_output *private_output = user_data;
 120         tdm_error ret;
 121
 122         TDM_RETURN_IF_FAIL(private_output);
 123
 124         private_display = private_output->private_display;
 125
 126         ret = tdm_display_update_output(private_display, output_backend, private_output->pipe);
 127         TDM_RETURN_IF_FAIL(ret == TDM_ERROR_NONE);
 128 }
 129
 130 INTERN void
 131 tdm_output_cb_status(tdm_output *output_backend, tdm_output_conn_status status,
 132                                          void *user_data)
 133 {
 134         tdm_private_display *private_display;
 135         tdm_private_output *private_output = user_data;
 136         tdm_value value;
 137
 138         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 139         TDM_RETURN_IF_FAIL(private_output);
 140
 141         private_display = private_output->private_display;
 142
 143         if (!tdm_thread_in_display_thread(syscall(SYS_gettid))) {
 144                 tdm_thread_cb_output_status output_status;
 145                 tdm_error ret;
 146
 147                 TDM_INFO("output(%d) %s", private_output->pipe, tdm_status_str(status));
 148
 149                 _tdm_output_update(output_backend, user_data);
 150
 151                 output_status.base.type = TDM_THREAD_CB_OUTPUT_STATUS;
 152                 output_status.base.length = sizeof output_status;
 153                 output_status.output_stamp = private_output->stamp;
 154                 output_status.status = status;
 155                 output_status.user_data = user_data;
 156
 157                 value.u32 = status;
 158                 tdm_output_call_change_handler_internal(private_output,
 159                                                                                                 &private_output->change_handler_list_sub,
 160                                                                                                 TDM_OUTPUT_CHANGE_CONNECTION,
 161                                                                                                 value, 0);
 162
 163                 ret = tdm_thread_send_cb(private_display->private_loop, &output_status.base);
 164                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 165
 166                 return;
 167         }
 168
 169         TDM_INFO("output(%d) %s", private_output->pipe, tdm_status_str(status));
 170
 171         if (!tdm_thread_is_running())
 172                 _tdm_output_update(output_backend, user_data);
 173
 174         value.u32 = status;
 175         tdm_output_call_change_handler_internal(private_output,
 176                                                                                         &private_output->change_handler_list_main,
 177                                                                                         TDM_OUTPUT_CHANGE_CONNECTION,
 178                                                                                         value, 0);
 179 }
 180
 181 EXTERN tdm_error
 182 tdm_output_add_change_handler(tdm_output *output,
 183                                                           tdm_output_change_handler func,
 184                                                           void *user_data)
 185 {
 186         tdm_private_change_handler *change_handler;
 187         OUTPUT_FUNC_ENTRY();
 188
 189         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
 190
 191         pthread_mutex_lock(&private_display->lock);
 192
 193         change_handler = calloc(1, sizeof(tdm_private_change_handler));
 194         if (!change_handler) {
 195                 TDM_ERR("failed: alloc memory");
 196                 _pthread_mutex_unlock(&private_display->lock);
 197                 return TDM_ERROR_OUT_OF_MEMORY;
 198         }
 199
 200         change_handler->private_output = private_output;
 201         change_handler->func = func;
 202         change_handler->user_data = user_data;
 203         change_handler->owner_tid = syscall(SYS_gettid);
 204
 205         if (!tdm_thread_in_display_thread(change_handler->owner_tid))
 206                 LIST_ADDTAIL(&change_handler->link, &private_output->change_handler_list_sub);
 207         else
 208                 LIST_ADDTAIL(&change_handler->link, &private_output->change_handler_list_main);
 209
 210         _pthread_mutex_unlock(&private_display->lock);
 211
 212         return ret;
 213 }
 214
 215 EXTERN void
 216 tdm_output_remove_change_handler(tdm_output *output,
 217                                                                  tdm_output_change_handler func,
 218                                                                  void *user_data)
 219 {
 220         tdm_private_display *private_display;
 221         tdm_private_output *private_output;
 222         tdm_private_change_handler *h = NULL, *hh = NULL;
 223
 224         TDM_RETURN_IF_FAIL(output != NULL);
 225         TDM_RETURN_IF_FAIL(func != NULL);
 226
 227         private_output = (tdm_private_output*)output;
 228         private_display = private_output->private_display;
 229
 230         _pthread_mutex_lock(&private_display->lock);
 231
 232         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list_main, link) {
 233                 if (h->func != func || h->user_data != user_data)
 234                         continue;
 235
 236                 LIST_DEL(&h->link);
 237                 free(h);
 238
 239                 _pthread_mutex_unlock(&private_display->lock);
 240
 241                 return;
 242         }
 243
 244         LIST_FOR_EACH_ENTRY_SAFE(h, hh, &private_output->change_handler_list_sub, link) {
 245                 if (h->func != func || h->user_data != user_data)
 246                         continue;
 247
 248                 LIST_DEL(&h->link);
 249                 free(h);
 250
 251                 _pthread_mutex_unlock(&private_display->lock);
 252
 253                 return;
 254         }
 255
 256         _pthread_mutex_unlock(&private_display->lock);
 257 }
 258
 259 EXTERN tdm_error
 260 tdm_output_get_output_type(tdm_output *output, tdm_output_type *type)
 261 {
 262         OUTPUT_FUNC_ENTRY();
 263
 264         TDM_RETURN_VAL_IF_FAIL(type != NULL, TDM_ERROR_INVALID_PARAMETER);
 265
 266         _pthread_mutex_lock(&private_display->lock);
 267
 268         *type = private_output->caps.type;
 269
 270         _pthread_mutex_unlock(&private_display->lock);
 271
 272         return ret;
 273 }
 274
 275 EXTERN tdm_error
 276 tdm_output_get_layer_count(tdm_output *output, int *count)
 277 {
 278         tdm_private_layer *private_layer = NULL;
 279
 280         OUTPUT_FUNC_ENTRY();
 281
 282         TDM_RETURN_VAL_IF_FAIL(count != NULL, TDM_ERROR_INVALID_PARAMETER);
 283
 284         _pthread_mutex_lock(&private_display->lock);
 285
 286         *count = 0;
 287         LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link)
 288         (*count)++;
 289         if (*count == 0) {
 290                 _pthread_mutex_unlock(&private_display->lock);
 291                 return TDM_ERROR_NONE;
 292         }
 293
 294         _pthread_mutex_unlock(&private_display->lock);
 295
 296         return ret;
 297 }
 298
 299
 300 EXTERN tdm_layer *
 301 tdm_output_get_layer(tdm_output *output, int index, tdm_error *error)
 302 {
 303         tdm_private_layer *private_layer = NULL;
 304
 305         OUTPUT_FUNC_ENTRY_ERROR();
 306
 307         _pthread_mutex_lock(&private_display->lock);
 308
 309         if (error)
 310                 *error = TDM_ERROR_NONE;
 311
 312         LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link) {
 313                 if (private_layer->index == index) {
 314                         _pthread_mutex_unlock(&private_display->lock);
 315                         return private_layer;
 316                 }
 317         }
 318
 319         _pthread_mutex_unlock(&private_display->lock);
 320
 321         return NULL;
 322 }
 323
 324 EXTERN tdm_error
 325 tdm_output_get_available_properties(tdm_output *output, const tdm_prop **props,
 326                                                                         int *count)
 327 {
 328         OUTPUT_FUNC_ENTRY();
 329
 330         TDM_RETURN_VAL_IF_FAIL(props != NULL, TDM_ERROR_INVALID_PARAMETER);
 331         TDM_RETURN_VAL_IF_FAIL(count != NULL, TDM_ERROR_INVALID_PARAMETER);
 332
 333         _pthread_mutex_lock(&private_display->lock);
 334
 335         *props = (const tdm_prop *)private_output->caps.props;
 336         *count = private_output->caps.prop_count;
 337
 338         _pthread_mutex_unlock(&private_display->lock);
 339
 340         return ret;
 341 }
 342
 343 EXTERN tdm_error
 344 tdm_output_get_available_modes(tdm_output *output,
 345                                                            const tdm_output_mode **modes, int *count)
 346 {
 347         OUTPUT_FUNC_ENTRY();
 348
 349         TDM_RETURN_VAL_IF_FAIL(modes != NULL, TDM_ERROR_INVALID_PARAMETER);
 350         TDM_RETURN_VAL_IF_FAIL(count != NULL, TDM_ERROR_INVALID_PARAMETER);
 351
 352         _pthread_mutex_lock(&private_display->lock);
 353
 354         *modes = (const tdm_output_mode *)private_output->caps.modes;
 355         *count = private_output->caps.mode_count;
 356
 357         _pthread_mutex_unlock(&private_display->lock);
 358
 359         return ret;
 360 }
 361
 362 EXTERN tdm_error
 363 tdm_output_get_available_size(tdm_output *output, int *min_w, int *min_h,
 364                                                           int *max_w, int *max_h, int *preferred_align)
 365 {
 366         OUTPUT_FUNC_ENTRY();
 367
 368         _pthread_mutex_lock(&private_display->lock);
 369
 370         if (min_w)
 371                 *min_w = TDM_FRONT_VALUE(private_output->caps.min_w);
 372         if (min_h)
 373                 *min_h = TDM_FRONT_VALUE(private_output->caps.min_h);
 374         if (max_w)
 375                 *max_w = TDM_FRONT_VALUE(private_output->caps.max_w);
 376         if (max_h)
 377                 *max_h = TDM_FRONT_VALUE(private_output->caps.max_h);
 378         if (preferred_align)
 379                 *preferred_align = TDM_FRONT_VALUE(private_output->caps.preferred_align);
 380
 381         _pthread_mutex_unlock(&private_display->lock);
 382
 383         return ret;
 384 }
 385
 386 EXTERN tdm_error
 387 tdm_output_get_cursor_available_size(tdm_output *output, int *min_w, int *min_h,
 388                                                                          int *max_w, int *max_h, int *preferred_align)
 389 {
 390         OUTPUT_FUNC_ENTRY();
 391
 392         _pthread_mutex_lock(&private_display->lock);
 393
 394         if (!tdm_display_check_module_abi(private_display, 1, 5)) {
 395
 396                 if (min_w)
 397                         *min_w = -1;
 398                 if (min_h)
 399                         *min_h = -1;
 400                 if (max_w)
 401                         *max_w = -1;
 402                 if (max_h)
 403                         *max_h = -1;
 404                 if (preferred_align)
 405                         *preferred_align = -1;
 406
 407                 _pthread_mutex_unlock(&private_display->lock);
 408
 409                 return TDM_ERROR_BAD_MODULE;
 410         }
 411
 412         if (min_w)
 413                 *min_w = TDM_FRONT_VALUE(private_output->caps.cursor_min_w);
 414         if (min_h)
 415                 *min_h = TDM_FRONT_VALUE(private_output->caps.cursor_min_h);
 416         if (max_w)
 417                 *max_w = TDM_FRONT_VALUE(private_output->caps.cursor_max_w);
 418         if (max_h)
 419                 *max_h = TDM_FRONT_VALUE(private_output->caps.cursor_max_h);
 420         if (preferred_align)
 421                 *preferred_align = TDM_FRONT_VALUE(private_output->caps.cursor_preferred_align);
 422
 423         _pthread_mutex_unlock(&private_display->lock);
 424
 425         return ret;
 426 }
 427
 428 EXTERN tdm_error
 429 tdm_output_get_physical_size(tdm_output *output, unsigned int *mmWidth,
 430                                                          unsigned int *mmHeight)
 431 {
 432         OUTPUT_FUNC_ENTRY();
 433
 434         _pthread_mutex_lock(&private_display->lock);
 435
 436         if (mmWidth)
 437                 *mmWidth = private_output->caps.mmWidth;
 438         if (mmHeight)
 439                 *mmHeight = private_output->caps.mmHeight;
 440
 441         _pthread_mutex_unlock(&private_display->lock);
 442
 443         return ret;
 444 }
 445
 446 EXTERN tdm_error
 447 tdm_output_get_subpixel(tdm_output *output, unsigned int *subpixel)
 448 {
 449         OUTPUT_FUNC_ENTRY();
 450         TDM_RETURN_VAL_IF_FAIL(subpixel != NULL, TDM_ERROR_INVALID_PARAMETER);
 451
 452         _pthread_mutex_lock(&private_display->lock);
 453
 454         *subpixel = private_output->caps.subpixel;
 455
 456         _pthread_mutex_unlock(&private_display->lock);
 457
 458         return ret;
 459 }
 460
 461 EXTERN tdm_error
 462 tdm_output_get_pipe(tdm_output *output, unsigned int *pipe)
 463 {
 464         OUTPUT_FUNC_ENTRY();
 465         TDM_RETURN_VAL_IF_FAIL(pipe != NULL, TDM_ERROR_INVALID_PARAMETER);
 466
 467         _pthread_mutex_lock(&private_display->lock);
 468
 469         *pipe = private_output->pipe;
 470
 471         _pthread_mutex_unlock(&private_display->lock);
 472
 473         return ret;
 474 }
 475
 476 EXTERN tdm_error
 477 tdm_output_get_primary_index(tdm_output *output, int *index)
 478 {
 479         tdm_private_layer *private_layer = NULL;
 480
 481         OUTPUT_FUNC_ENTRY();
 482         TDM_RETURN_VAL_IF_FAIL(index != NULL, TDM_ERROR_INVALID_PARAMETER);
 483
 484         _pthread_mutex_lock(&private_display->lock);
 485
 486         LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link) {
 487                 if (private_layer->caps.capabilities & TDM_LAYER_CAPABILITY_PRIMARY) {
 488                         *index = private_layer->index;
 489                         break;
 490                 }
 491         }
 492
 493         _pthread_mutex_unlock(&private_display->lock);
 494
 495         return ret;
 496 }
 497
 498 EXTERN tdm_error
 499 tdm_output_set_property(tdm_output *output, unsigned int id, tdm_value value)
 500 {
 501         tdm_func_output *func_output;
 502         OUTPUT_FUNC_ENTRY();
 503
 504         _pthread_mutex_lock(&private_display->lock);
 505
 506         func_output = &private_display->func_output;
 507
 508         if (!func_output->output_set_property) {
 509                 _pthread_mutex_unlock(&private_display->lock);
 510                 TDM_ERR("not implemented!!");
 511                 return TDM_ERROR_NOT_IMPLEMENTED;
 512         }
 513
 514         ret = func_output->output_set_property(private_output->output_backend, id,
 515                                                                                    value);
 516
 517         _pthread_mutex_unlock(&private_display->lock);
 518
 519         return ret;
 520 }
 521
 522 EXTERN tdm_error
 523 tdm_output_get_property(tdm_output *output, unsigned int id, tdm_value *value)
 524 {
 525         tdm_func_output *func_output;
 526         OUTPUT_FUNC_ENTRY();
 527
 528         TDM_RETURN_VAL_IF_FAIL(value != NULL, TDM_ERROR_INVALID_PARAMETER);
 529
 530         _pthread_mutex_lock(&private_display->lock);
 531
 532         func_output = &private_display->func_output;
 533
 534         if (!func_output->output_get_property) {
 535                 _pthread_mutex_unlock(&private_display->lock);
 536                 TDM_ERR("not implemented!!");
 537                 return TDM_ERROR_NOT_IMPLEMENTED;
 538         }
 539
 540         ret = func_output->output_get_property(private_output->output_backend, id,
 541                                                                                    value);
 542
 543         _pthread_mutex_unlock(&private_display->lock);
 544
 545         return ret;
 546 }
 547
 548 INTERN void
 549 tdm_output_cb_vblank(tdm_output *output_backend, unsigned int sequence,
 550                                          unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 551 {
 552         tdm_private_vblank_handler *vblank_handler = user_data;
 553         tdm_private_vblank_handler *v = NULL, *vv = NULL;
 554         tdm_private_output *private_output;
 555         tdm_private_display *private_display;
 556         struct list_head clone_list;
 557         int interval, sync;
 558         pid_t tid = syscall(SYS_gettid);
 559
 560         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 561         TDM_RETURN_IF_FAIL(vblank_handler);
 562
 563         private_output = vblank_handler->private_output;
 564         private_display = private_output->private_display;
 565
 566         if (vblank_handler->owner_tid != tid) {
 567                 tdm_thread_cb_output_vblank output_vblank;
 568                 tdm_error ret;
 569
 570                 output_vblank.base.type = TDM_THREAD_CB_OUTPUT_VBLANK;
 571                 output_vblank.base.length = sizeof output_vblank;
 572                 output_vblank.output_stamp = vblank_handler->private_output->stamp;
 573                 output_vblank.sequence = sequence;
 574                 output_vblank.tv_sec = tv_sec;
 575                 output_vblank.tv_usec = tv_usec;
 576                 output_vblank.user_data = user_data;
 577
 578                 ret = tdm_thread_send_cb(private_display->private_loop, &output_vblank.base);
 579                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 580
 581                 return;
 582         }
 583
 584         if (vblank_handler->owner_tid != tid)
 585                 TDM_NEVER_GET_HERE();
 586
 587         interval = vblank_handler->interval;
 588         sync = vblank_handler->sync;
 589
 590         LIST_INITHEAD(&clone_list);
 591
 592         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &private_output->vblank_handler_list, link) {
 593                 if (v->interval != interval || v->sync != sync || v->owner_tid != tid)
 594                         continue;
 595
 596                 LIST_DEL(&v->link);
 597                 LIST_ADDTAIL(&v->link, &clone_list);
 598         }
 599
 600         if (tdm_debug_module & TDM_DEBUG_COMMIT)
 601                 TDM_INFO("----------------------------------------- output(%d) got vblank", private_output->pipe);
 602
 603         _pthread_mutex_unlock(&private_display->lock);
 604         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &clone_list, link) {
 605                 if (tdm_debug_module & TDM_DEBUG_COMMIT)
 606                         TDM_INFO("handler(%p)", v);
 607
 608                 if (v->func)
 609                         v->func(v->private_output, sequence, tv_sec, tv_usec, v->user_data);
 610                 LIST_DEL(&v->link);
 611                 free(v);
 612         }
 613         _pthread_mutex_lock(&private_display->lock);
 614
 615         if (tdm_debug_module & TDM_DEBUG_COMMIT)
 616                 TDM_INFO("-----------------------------------------...");
 617 }
 618
 619 INTERN void
 620 tdm_output_cb_commit(tdm_output *output_backend, unsigned int sequence,
 621                                          unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 622 {
 623         tdm_private_output_commit_handler *output_commit_handler = user_data;
 624         tdm_private_display *private_display;
 625         tdm_private_output *private_output;
 626         tdm_private_layer *private_layer = NULL;
 627
 628         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 629
 630         if (!output_commit_handler)
 631                 return;
 632
 633         private_output = output_commit_handler->private_output;
 634         private_display = private_output->private_display;
 635
 636         if (output_commit_handler->owner_tid != syscall(SYS_gettid)) {
 637                 tdm_thread_cb_output_commit output_commit;
 638                 tdm_error ret;
 639
 640                 output_commit.base.type = TDM_THREAD_CB_OUTPUT_COMMIT;
 641                 output_commit.base.length = sizeof output_commit;
 642                 output_commit.output_stamp = private_output->stamp;
 643                 output_commit.sequence = sequence;
 644                 output_commit.tv_sec = tv_sec;
 645                 output_commit.tv_usec = tv_usec;
 646                 output_commit.user_data = user_data;
 647
 648                 ret = tdm_thread_send_cb(private_display->private_loop, &output_commit.base);
 649                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 650
 651                 return;
 652         }
 653
 654         if (tdm_debug_module & TDM_DEBUG_COMMIT) {
 655                 TDM_INFO("----------------------------------------- output(%d) committed", private_output->pipe);
 656                 TDM_INFO("handler(%p)", output_commit_handler);
 657         }
 658
 659         if (private_display->commit_type == TDM_COMMIT_TYPE_OUTPUT) {
 660                 /* In case of layer commit, the below will be handled in the layer commit callback */
 661                 LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link) {
 662                         if (private_layer->committed_buffer)
 663                                 tdm_layer_committed(private_layer, &private_layer->committed_buffer);
 664                 }
 665         }
 666
 667         if (output_commit_handler->func) {
 668                 _pthread_mutex_unlock(&private_display->lock);
 669                 output_commit_handler->func(private_output, sequence,
 670                                                                         tv_sec, tv_usec, output_commit_handler->user_data);
 671                 _pthread_mutex_lock(&private_display->lock);
 672         }
 673
 674         LIST_DEL(&output_commit_handler->link);
 675         free(output_commit_handler);
 676
 677         if (tdm_debug_module & TDM_DEBUG_COMMIT)
 678                 TDM_INFO("-----------------------------------------...");
 679 }
 680
 681 /* add_front: To distinguish between the user vblank handlers and the layer
 682  *            commit vblank handlers. The layer commit handlers will be called
 683  *            before calling the user vblank handlers.
 684  */
 685 static tdm_error
 686 _tdm_output_wait_vblank(tdm_output *output, int interval, int sync,
 687                                                 tdm_output_vblank_handler func, void *user_data,
 688                                                 unsigned int add_front)
 689 {
 690         tdm_func_output *func_output;
 691         tdm_private_vblank_handler *vblank_handler = NULL, *v = NULL;
 692         unsigned int skip_request = 0;
 693         pid_t tid = syscall(SYS_gettid);
 694
 695         OUTPUT_FUNC_ENTRY();
 696
 697         func_output = &private_display->func_output;
 698
 699         /* interval SHOULD be at least 1 */
 700         if (interval <= 0)
 701                 interval = 1;
 702
 703         if (!func_output->output_wait_vblank) {
 704                 TDM_ERR("not implemented!!");
 705                 return TDM_ERROR_NOT_IMPLEMENTED;
 706         }
 707
 708         if (!private_output->regist_vblank_cb) {
 709                 private_output->regist_vblank_cb = 1;
 710                 ret = func_output->output_set_vblank_handler(private_output->output_backend,
 711                                 tdm_output_cb_vblank);
 712         }
 713
 714         vblank_handler = calloc(1, sizeof(tdm_private_vblank_handler));
 715         if (!vblank_handler) {
 716                 TDM_ERR("failed: alloc memory");
 717                 return TDM_ERROR_OUT_OF_MEMORY;
 718         }
 719
 720         if (tdm_debug_module & TDM_DEBUG_COMMIT)
 721                 TDM_INFO("output(%d) wait_vblank: handler(%p)", private_output->pipe, vblank_handler);
 722
 723         LIST_FOR_EACH_ENTRY(v, &private_output->vblank_handler_list, link) {
 724                 if (v->interval == interval && v->sync == sync && v->owner_tid == tid) {
 725                         skip_request = 1;
 726                         break;
 727                 }
 728         }
 729
 730         if (add_front)
 731                 LIST_ADD(&vblank_handler->link, &private_output->vblank_handler_list);
 732         else
 733                 LIST_ADDTAIL(&vblank_handler->link, &private_output->vblank_handler_list);
 734
 735         vblank_handler->private_output = private_output;
 736         vblank_handler->interval = interval;
 737         vblank_handler->sync = sync;
 738         vblank_handler->func = func;
 739         vblank_handler->user_data = user_data;
 740         vblank_handler->owner_tid = tid;
 741
 742         /* If there is the previous request, we can skip to call output_wait_vblank() */
 743         if (!skip_request) {
 744                 ret = func_output->output_wait_vblank(private_output->output_backend, interval,
 745                                                                                           sync, vblank_handler);
 746                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 747
 748                 if (tdm_debug_module & TDM_DEBUG_COMMIT)
 749                         TDM_INFO("output(%d) backend wait_vblank", private_output->pipe);
 750         }
 751
 752         return ret;
 753
 754 wait_failed:
 755         if (vblank_handler) {
 756                 LIST_DEL(&vblank_handler->link);
 757                 free(vblank_handler);
 758         }
 759         return ret;
 760 }
 761
 762 EXTERN tdm_error
 763 tdm_output_wait_vblank(tdm_output *output, int interval, int sync,
 764                                            tdm_output_vblank_handler func, void *user_data)
 765 {
 766         OUTPUT_FUNC_ENTRY();
 767
 768         _pthread_mutex_lock(&private_display->lock);
 769
 770         if (private_output->current_dpms_value > TDM_OUTPUT_DPMS_ON) {
 771                 TDM_WRN("output(%d) dpms: %s", private_output->pipe,
 772                                 tdm_dpms_str(private_output->current_dpms_value));
 773                 _pthread_mutex_unlock(&private_display->lock);
 774                 return TDM_ERROR_DPMS_OFF;
 775         }
 776
 777         ret = _tdm_output_wait_vblank(output, interval, sync, func, user_data, 0);
 778
 779         _pthread_mutex_unlock(&private_display->lock);
 780
 781         return ret;
 782 }
 783
 784 EXTERN tdm_error
 785 tdm_output_wait_vblank_add_front(tdm_output *output, int interval, int sync,
 786                                                                  tdm_output_vblank_handler func, void *user_data)
 787 {
 788         OUTPUT_FUNC_ENTRY();
 789
 790         _pthread_mutex_lock(&private_display->lock);
 791
 792         if (private_output->current_dpms_value > TDM_OUTPUT_DPMS_ON) {
 793                 TDM_WRN("output(%d) dpms: %s", private_output->pipe,
 794                                 tdm_dpms_str(private_output->current_dpms_value));
 795                 _pthread_mutex_unlock(&private_display->lock);
 796                 return TDM_ERROR_DPMS_OFF;
 797         }
 798
 799         ret = _tdm_output_wait_vblank(output, interval, sync, func, user_data, 1);
 800
 801         _pthread_mutex_unlock(&private_display->lock);
 802
 803         return ret;
 804 }
 805
 806 INTERN void
 807 tdm_output_remove_vblank_handler_internal(tdm_output *output, tdm_output_vblank_handler func, void *user_data)
 808 {
 809         tdm_private_output *private_output = (tdm_private_output*)output;
 810         tdm_private_vblank_handler *v = NULL;
 811
 812         TDM_RETURN_IF_FAIL(private_output != NULL);
 813         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 814
 815         LIST_FOR_EACH_ENTRY(v, &private_output->vblank_handler_list, link) {
 816                 if (v->func == func && v->user_data == user_data) {
 817                         /* only set func & user_data to NULL. It will be freed when an event occurs */
 818                         v->func = NULL;
 819                         v->user_data = NULL;
 820                         break;
 821                 }
 822         }
 823 }
 824
 825 INTERN void
 826 tdm_output_remove_commit_handler_internal(tdm_output *output, tdm_output_commit_handler func, void *user_data)
 827 {
 828         tdm_private_output *private_output = (tdm_private_output*)output;
 829         tdm_private_output_commit_handler *c = NULL;
 830
 831         TDM_RETURN_IF_FAIL(private_output != NULL);
 832         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 833
 834         LIST_FOR_EACH_ENTRY(c, &private_output->output_commit_handler_list, link) {
 835                 if (c->func == func && c->user_data == user_data) {
 836                         /* only set func & user_data to NULL. It will be freed when an event occurs */
 837                         c->func = NULL;
 838                         c->user_data = NULL;
 839                         break;
 840                 }
 841         }
 842 }
 843
 844 EXTERN tdm_error
 845 tdm_output_remove_vblank_handler(tdm_output *output, tdm_output_vblank_handler func, void *user_data)
 846 {
 847         OUTPUT_FUNC_ENTRY();
 848
 849         _pthread_mutex_lock(&private_display->lock);
 850
 851         tdm_output_remove_vblank_handler_internal(output, func, user_data);
 852
 853         _pthread_mutex_unlock(&private_display->lock);
 854
 855         return ret;
 856 }
 857
 858 EXTERN tdm_error
 859 tdm_output_remove_commit_handler(tdm_output *output, tdm_output_commit_handler func, void *user_data)
 860 {
 861         OUTPUT_FUNC_ENTRY();
 862
 863         _pthread_mutex_lock(&private_display->lock);
 864
 865         tdm_output_remove_commit_handler_internal(output, func, user_data);
 866
 867         _pthread_mutex_unlock(&private_display->lock);
 868
 869         return ret;
 870 }
 871
 872 INTERN tdm_error
 873 tdm_output_commit_internal(tdm_output *output, int sync, tdm_output_commit_handler func, void *user_data)
 874 {
 875         tdm_func_output *func_output;
 876         tdm_private_output_commit_handler *output_commit_handler = NULL;
 877         tdm_private_layer *private_layer = NULL;
 878         tdm_output_dpms dpms_value = TDM_OUTPUT_DPMS_ON;
 879
 880         OUTPUT_FUNC_ENTRY();
 881
 882         func_output = &private_display->func_output;
 883
 884         if (!func_output->output_commit) {
 885                 TDM_ERR("not implemented!!");
 886                 return TDM_ERROR_NOT_IMPLEMENTED;
 887         }
 888
 889         /* TODO: this is ugly. But before using tdm_output_get_dpms_internal, we have
 890          * to check if all backends's DPMS operation has no problem.
 891          */
 892         if (private_display->commit_per_vblank)
 893                 tdm_output_get_dpms_internal(output, &dpms_value);
 894         else
 895                 dpms_value = private_output->current_dpms_value;
 896
 897         if (dpms_value == TDM_OUTPUT_DPMS_ON) {
 898                 if (func) {
 899                         if (!private_output->regist_commit_cb) {
 900                                 private_output->regist_commit_cb = 1;
 901                                 ret = func_output->output_set_commit_handler(private_output->output_backend,
 902                                                         tdm_output_cb_commit);
 903                                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, commit_failed);
 904                         }
 905
 906                         output_commit_handler = calloc(1, sizeof(tdm_private_output_commit_handler));
 907                         if (!output_commit_handler) {
 908                                 TDM_ERR("failed: alloc memory");
 909                                 return TDM_ERROR_OUT_OF_MEMORY;
 910                         }
 911
 912                         LIST_ADDTAIL(&output_commit_handler->link, &private_output->output_commit_handler_list);
 913                         output_commit_handler->private_output = private_output;
 914                         output_commit_handler->func = func;
 915                         output_commit_handler->user_data = user_data;
 916                         output_commit_handler->owner_tid = syscall(SYS_gettid);
 917                 }
 918
 919                 ret = func_output->output_commit(private_output->output_backend, sync,
 920                                 output_commit_handler);
 921                 TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, commit_failed);
 922
 923                 if (tdm_debug_module & TDM_DEBUG_COMMIT)
 924                         TDM_INFO("output(%d) backend commit: handle(%p) func(%p) user_data(%p)",
 925                                         private_output->pipe, output_commit_handler, func, user_data);
 926         }
 927
 928         /* Even if DPMS is off, committed_buffer should be changed because it will be referred
 929          * for tdm_layer_committed() function.
 930          */
 931         LIST_FOR_EACH_ENTRY(private_layer, &private_output->layer_list, link) {
 932                 if (!private_layer->waiting_buffer)
 933                         continue;
 934
 935                 private_layer->committed_buffer = private_layer->waiting_buffer;
 936                 private_layer->waiting_buffer = NULL;
 937                 if (tdm_debug_module & TDM_DEBUG_BUFFER)
 938                         TDM_INFO("layer(%p) waiting_buffer(%p) committed_buffer(%p)",
 939                                          private_layer, private_layer->waiting_buffer,
 940                                          private_layer->committed_buffer->buffer);
 941         }
 942
 943         if (dpms_value != TDM_OUTPUT_DPMS_ON) {
 944                 TDM_WRN("TDM_OUTPUT_DPMS_OFF. Directly call commit handler instead of commit.");
 945                 if (func)
 946                         func(output, 0, 0, 0, user_data);
 947         }
 948
 949         return ret;
 950
 951 commit_failed:
 952         if (output_commit_handler) {
 953                 LIST_DEL(&output_commit_handler->link);
 954                 free(output_commit_handler);
 955         }
 956         return ret;
 957 }
 958
 959 EXTERN tdm_error
 960 tdm_output_commit(tdm_output *output, int sync, tdm_output_commit_handler func,
 961                                   void *user_data)
 962 {
 963         OUTPUT_FUNC_ENTRY();
 964
 965         _pthread_mutex_lock(&private_display->lock);
 966
 967         if (private_display->commit_type == TDM_COMMIT_TYPE_NONE)
 968                 private_display->commit_type = TDM_COMMIT_TYPE_OUTPUT;
 969         else if (private_display->commit_type == TDM_COMMIT_TYPE_LAYER) {
 970                 TDM_ERR("Can't supported. Use tdm_layer_commit");
 971                 _pthread_mutex_unlock(&private_display->lock);
 972                 return TDM_ERROR_BAD_REQUEST;
 973         }
 974
 975         if (private_display->commit_per_vblank) {
 976                 TDM_ERR("Use tdm_layer_commit");
 977                 _pthread_mutex_unlock(&private_display->lock);
 978                 return TDM_ERROR_BAD_REQUEST;
 979         }
 980
 981         if (private_output->current_dpms_value > TDM_OUTPUT_DPMS_ON) {
 982                 TDM_ERR("output(%d) dpms: %s", private_output->pipe,
 983                                 tdm_dpms_str(private_output->current_dpms_value));
 984                 _pthread_mutex_unlock(&private_display->lock);
 985                 return TDM_ERROR_DPMS_OFF;
 986         }
 987
 988         if (tdm_debug_module & TDM_DEBUG_COMMIT)
 989                 TDM_INFO("output(%d) commit", private_output->pipe);
 990
 991         ret = tdm_output_commit_internal(output, sync, func, user_data);
 992
 993         _pthread_mutex_unlock(&private_display->lock);
 994
 995         return ret;
 996 }
 997
 998 EXTERN tdm_error
 999 tdm_output_set_mode(tdm_output *output, const tdm_output_mode *mode)
1000 {
1001         tdm_func_output *func_output;
1002         OUTPUT_FUNC_ENTRY();
1003
1004         TDM_RETURN_VAL_IF_FAIL(mode != NULL, TDM_ERROR_INVALID_PARAMETER);
1005
1006         _pthread_mutex_lock(&private_display->lock);
1007
1008         func_output = &private_display->func_output;
1009
1010         if (!func_output->output_set_mode) {
1011                 _pthread_mutex_unlock(&private_display->lock);
1012                 TDM_ERR("not implemented!!");
1013                 return TDM_ERROR_NOT_IMPLEMENTED;
1014         }
1015
1016         ret = func_output->output_set_mode(private_output->output_backend, mode);
1017         if (ret == TDM_ERROR_NONE)
1018                 private_output->current_mode = mode;
1019         _pthread_mutex_unlock(&private_display->lock);
1020
1021         return ret;
1022 }
1023
1024 EXTERN tdm_error
1025 tdm_output_get_mode(tdm_output *output, const tdm_output_mode **mode)
1026 {
1027         OUTPUT_FUNC_ENTRY();
1028
1029         TDM_RETURN_VAL_IF_FAIL(mode != NULL, TDM_ERROR_INVALID_PARAMETER);
1030
1031         _pthread_mutex_lock(&private_display->lock);
1032
1033         *mode = private_output->current_mode;
1034
1035         _pthread_mutex_unlock(&private_display->lock);
1036
1037         return ret;
1038 }
1039
1040 static tdm_error
1041 _tdm_output_dpms_changed_timeout(void *user_data)
1042 {
1043         tdm_private_output *private_output = user_data;
1044         tdm_value value;
1045
1046         value.u32 = private_output->current_dpms_value;
1047         tdm_output_call_change_handler_internal(private_output,
1048                                                                                         &private_output->change_handler_list_sub,
1049                                                                                         TDM_OUTPUT_CHANGE_DPMS,
1050                                                                                         value, 0);
1051
1052         return TDM_ERROR_NONE;
1053 }
1054
1055 INTERN void
1056 tdm_output_cb_dpms(tdm_output *output_backend, tdm_output_dpms dpms, void *user_data)
1057 {
1058         tdm_private_display *private_display;
1059         tdm_private_output *private_output = user_data;
1060         tdm_value value;
1061
1062         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
1063         TDM_RETURN_IF_FAIL(private_output);
1064
1065         private_display = private_output->private_display;
1066
1067         if (!tdm_thread_in_display_thread(syscall(SYS_gettid))) {
1068                 tdm_thread_cb_output_dpms output_dpms;
1069                 tdm_error ret;
1070
1071                 _tdm_output_update(output_backend, user_data);
1072
1073                 output_dpms.base.type = TDM_THREAD_CB_OUTPUT_DPMS;
1074                 output_dpms.base.length = sizeof output_dpms;
1075                 output_dpms.output_stamp = private_output->stamp;
1076                 output_dpms.dpms = dpms;
1077                 output_dpms.user_data = user_data;
1078
1079                 value.u32 = dpms;
1080                 tdm_output_call_change_handler_internal(private_output,
1081                                                                                                 &private_output->change_handler_list_sub,
1082                                                                                                 TDM_OUTPUT_CHANGE_DPMS,
1083                                                                                                 value, 0);
1084
1085                 ret = tdm_thread_send_cb(private_display->private_loop, &output_dpms.base);
1086                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
1087
1088                 return;
1089         }
1090
1091         private_output->current_dpms_value = dpms;
1092         private_output->waiting_dpms_change = 0;
1093
1094         TDM_INFO("output(%d) dpms %s", private_output->pipe, tdm_dpms_str(dpms));
1095
1096         value.u32 = dpms;
1097         tdm_output_call_change_handler_internal(private_output,
1098                                                                                         &private_output->change_handler_list_main,
1099                                                                                         TDM_OUTPUT_CHANGE_DPMS,
1100                                                                                         value, 0);
1101 }
1102
1103 EXTERN tdm_error
1104 tdm_output_set_dpms(tdm_output *output, tdm_output_dpms dpms_value)
1105 {
1106         tdm_func_output *func_output;
1107         OUTPUT_FUNC_ENTRY();
1108
1109         if (dpms_value > TDM_OUTPUT_DPMS_OFF)
1110                 dpms_value = TDM_OUTPUT_DPMS_OFF;
1111
1112         _pthread_mutex_lock(&private_display->lock);
1113
1114         if (private_output->waiting_dpms_change) {
1115                 TDM_ERR("DPMS is not changed yet. Can't be changed twice");
1116                 _pthread_mutex_unlock(&private_display->lock);
1117                 return TDM_ERROR_BAD_REQUEST;
1118         }
1119
1120         if (private_output->current_dpms_value == dpms_value) {
1121                 _pthread_mutex_unlock(&private_display->lock);
1122                 return TDM_ERROR_NONE;
1123         }
1124
1125         /** Use timer to call the output change callback of the sub-thread.
1126          * The output change callback of tdm_server and tdm_vblank was called
1127          * in the main thread. And it made the multi thread issue. If we use
1128          * the timer, we can call the sub-thread's output change callback in
1129          * sub-thread.
1130          */
1131         if (!private_output->dpms_changed_timer) {
1132                 private_output->dpms_changed_timer =
1133                         tdm_event_loop_add_timer_handler(private_output->private_display,
1134                                                                                          _tdm_output_dpms_changed_timeout, private_output, NULL);
1135                 if (!private_output->dpms_changed_timer) {
1136                         TDM_ERR("can't create dpms timer!!");
1137                         _pthread_mutex_unlock(&private_display->lock);
1138                         return TDM_ERROR_OUT_OF_MEMORY;
1139                 }
1140         }
1141
1142         func_output = &private_display->func_output;
1143
1144         if (func_output->output_set_dpms)
1145                 ret = func_output->output_set_dpms(private_output->output_backend, dpms_value);
1146         else {
1147                 ret = TDM_ERROR_NONE;
1148                 TDM_WRN("not implemented!!");
1149                 goto done;
1150         }
1151
1152 done:
1153         if (ret == TDM_ERROR_NONE) {
1154                 tdm_value value;
1155
1156                 private_output->current_dpms_value = dpms_value;
1157                 TDM_INFO("output(%d) dpms %s", private_output->pipe, tdm_dpms_str(dpms_value));
1158
1159                 value.u32 = dpms_value;
1160                 tdm_output_call_change_handler_internal(private_output,
1161                                                                                                 &private_output->change_handler_list_main,
1162                                                                                                 TDM_OUTPUT_CHANGE_DPMS,
1163                                                                                                 value, 0);
1164
1165                 if (!LIST_IS_EMPTY(&private_output->change_handler_list_sub)) {
1166                         ret = tdm_event_loop_source_timer_update(private_output->dpms_changed_timer, 1);
1167                         if (ret != TDM_ERROR_NONE)
1168                                 TDM_NEVER_GET_HERE();
1169                 }
1170         }
1171
1172         _pthread_mutex_unlock(&private_display->lock);
1173
1174         return ret;
1175 }
1176
1177 EXTERN tdm_error
1178 tdm_output_set_dpms_async(tdm_output *output, tdm_output_dpms dpms_value)
1179 {
1180         tdm_func_output *func_output;
1181         OUTPUT_FUNC_ENTRY();
1182
1183         if (!(private_output->caps.capabilities & TDM_OUTPUT_CAPABILITY_ASYNC_DPMS)) {
1184                 TDM_ERR("output doesn't support the asynchronous DPMS control!");
1185                 return TDM_ERROR_BAD_REQUEST;
1186         }
1187
1188         if (dpms_value > TDM_OUTPUT_DPMS_OFF)
1189                 dpms_value = TDM_OUTPUT_DPMS_OFF;
1190
1191         _pthread_mutex_lock(&private_display->lock);
1192
1193         if (private_output->waiting_dpms_change) {
1194                 TDM_ERR("DPMS is not changed yet. Can't be changed twice");
1195                 _pthread_mutex_unlock(&private_display->lock);
1196                 return TDM_ERROR_BAD_REQUEST;
1197         }
1198
1199         if (private_output->current_dpms_value == dpms_value) {
1200                 _pthread_mutex_unlock(&private_display->lock);
1201                 return TDM_ERROR_NONE;
1202         }
1203
1204         func_output = &private_display->func_output;
1205         if (!func_output->output_set_dpms_handler) {
1206                 TDM_ERR("not implemented: output_set_dpms_handler");
1207                 _pthread_mutex_unlock(&private_display->lock);
1208                 return TDM_ERROR_NOT_IMPLEMENTED;
1209         }
1210
1211         if (!func_output->output_set_dpms_async) {
1212                 TDM_ERR("not implemented: output_set_dpms_async");
1213                 _pthread_mutex_unlock(&private_display->lock);
1214                 return TDM_ERROR_NOT_IMPLEMENTED;
1215         }
1216
1217         if (!private_output->regist_dpms_cb) {
1218                 private_output->regist_dpms_cb = 1;
1219                 ret = func_output->output_set_dpms_handler(private_output->output_backend,
1220                                 tdm_output_cb_dpms, private_output);
1221                 if (ret != TDM_ERROR_NONE) {
1222                         _pthread_mutex_unlock(&private_display->lock);
1223                         TDM_ERR("Can't set the dpms handler!!");
1224                         return ret;
1225                 }
1226         }
1227
1228         ret = func_output->output_set_dpms_async(private_output->output_backend, dpms_value);
1229
1230         if (ret == TDM_ERROR_NONE)
1231                 private_output->waiting_dpms_change = 1;
1232
1233         _pthread_mutex_unlock(&private_display->lock);
1234
1235         return ret;
1236 }
1237
1238 INTERN tdm_error
1239 tdm_output_get_dpms_internal(tdm_output *output, tdm_output_dpms *dpms_value)
1240 {
1241         tdm_func_output *func_output;
1242         OUTPUT_FUNC_ENTRY();
1243
1244         TDM_RETURN_VAL_IF_FAIL(private_output != NULL, TDM_ERROR_INVALID_PARAMETER);
1245
1246         func_output = &private_display->func_output;
1247
1248         if (!func_output->output_get_dpms) {
1249                 *dpms_value = private_output->current_dpms_value;
1250                 TDM_WRN("not implemented!!");
1251                 return TDM_ERROR_NONE;
1252         }
1253
1254         ret = func_output->output_get_dpms(private_output->output_backend, dpms_value);
1255         if (ret != TDM_ERROR_NONE) {
1256                 TDM_ERR("output_get_dpms failed");
1257                 *dpms_value = TDM_OUTPUT_DPMS_OFF;
1258         }
1259
1260         /* TODO: this is ugly. But we have to check if all backends's DPMS operation has no problem. */
1261         if (private_display->commit_per_vblank)
1262                 if (*dpms_value != private_output->current_dpms_value) {
1263                         private_output->current_dpms_value = *dpms_value;
1264                         TDM_ERR("output(%d) dpms changed suddenly: %s",
1265                                         private_output->pipe, tdm_dpms_str(*dpms_value));
1266                 }
1267
1268         return ret;
1269 }
1270
1271 EXTERN tdm_error
1272 tdm_output_get_dpms(tdm_output *output, tdm_output_dpms *dpms_value)
1273 {
1274         OUTPUT_FUNC_ENTRY();
1275
1276         TDM_RETURN_VAL_IF_FAIL(dpms_value != NULL, TDM_ERROR_INVALID_PARAMETER);
1277
1278         _pthread_mutex_lock(&private_display->lock);
1279
1280         ret = tdm_output_get_dpms_internal(output, dpms_value);
1281
1282         _pthread_mutex_unlock(&private_display->lock);
1283
1284         return ret;
1285 }
1286
1287 EXTERN tdm_capture *
1288 tdm_output_create_capture(tdm_output *output, tdm_error *error)
1289 {
1290         tdm_capture *capture = NULL;
1291
1292         OUTPUT_FUNC_ENTRY_ERROR();
1293
1294         _pthread_mutex_lock(&private_display->lock);
1295
1296         capture = (tdm_capture *)tdm_capture_create_output_internal(private_output, error);
1297
1298         _pthread_mutex_unlock(&private_display->lock);
1299
1300         return capture;
1301 }
1302
1303 INTERN void
1304 tdm_output_call_change_handler_internal(tdm_private_output *private_output,
1305                                                                                 struct list_head *change_handler_list,
1306                                                                                 tdm_output_change_type type,
1307                                                                                 tdm_value value,
1308                                                                                 int no_check_thread_id)
1309 {
1310         tdm_private_display *private_display;
1311         tdm_private_change_handler *change_handler = NULL;
1312
1313         TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
1314         TDM_RETURN_IF_FAIL(private_output);
1315
1316         private_display = private_output->private_display;
1317         if (!tdm_thread_in_display_thread(syscall(SYS_gettid))) {
1318                 if (type & TDM_OUTPUT_CHANGE_CONNECTION)
1319                         TDM_INFO("output(%d) changed: %s (%d)",
1320                                          private_output->pipe, tdm_status_str(value.u32), value.u32);
1321                 if (type & TDM_OUTPUT_CHANGE_DPMS)
1322                         TDM_INFO("output(%d) changed: dpms %s (%d)",
1323                                          private_output->pipe, tdm_dpms_str(value.u32), value.u32);
1324         }
1325
1326         if (LIST_IS_EMPTY(change_handler_list))
1327                 return;
1328
1329         LIST_FOR_EACH_ENTRY(change_handler, change_handler_list, link) {
1330                 if (!no_check_thread_id && change_handler->owner_tid != syscall(SYS_gettid))
1331                         TDM_NEVER_GET_HERE();
1332
1333                 _pthread_mutex_unlock(&private_display->lock);
1334                 change_handler->func(private_output, type,
1335                                                          value, change_handler->user_data);
1336                 _pthread_mutex_lock(&private_display->lock);
1337         }
1338 }