linux-core/nv50_kms_wrapper.c

   1 /*
   2  * Copyright (C) 2008 Maarten Maathuis.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "nv50_kms_wrapper.h"
  28 #include "drm_crtc_helper.h" /* be careful what you use from this */
  29
  30 /* This file serves as the interface between the common kernel modesetting code and the device dependent implementation. */
  31
  32 /*
  33  * Get private functions.
  34  */
  35
  36 struct nv50_kms_priv *nv50_get_kms_priv(struct drm_device *dev)
  37 {
  38         struct drm_nouveau_private *dev_priv = dev->dev_private;
  39         return dev_priv->kms_priv;
  40 }
  41
  42 /*
  43  * Allocation functions.
  44  */
  45
  46 static void *nv50_kms_alloc_crtc(struct drm_device *dev)
  47 {
  48         struct nv50_kms_priv *kms_priv = nv50_get_kms_priv(dev);
  49         struct nv50_kms_crtc *crtc = kzalloc(sizeof(struct nv50_kms_crtc), GFP_KERNEL);
  50
  51         if (!crtc)
  52                 return NULL;
  53
  54         list_add_tail(&crtc->item, &kms_priv->crtcs);
  55
  56         return &(crtc->priv);
  57 }
  58
  59 static void *nv50_kms_alloc_output(struct drm_device *dev)
  60 {
  61         struct nv50_kms_priv *kms_priv = nv50_get_kms_priv(dev);
  62         struct nv50_kms_encoder *encoder = kzalloc(sizeof(struct nv50_kms_encoder), GFP_KERNEL);
  63
  64         if (!encoder)
  65                 return NULL;
  66
  67         list_add_tail(&encoder->item, &kms_priv->encoders);
  68
  69         return &(encoder->priv);
  70 }
  71
  72 static void *nv50_kms_alloc_connector(struct drm_device *dev)
  73 {
  74         struct nv50_kms_priv *kms_priv = nv50_get_kms_priv(dev);
  75         struct nv50_kms_connector *connector = kzalloc(sizeof(struct nv50_kms_connector), GFP_KERNEL);
  76
  77         if (!connector)
  78                 return NULL;
  79
  80         list_add_tail(&connector->item, &kms_priv->connectors);
  81
  82         return &(connector->priv);
  83 }
  84
  85 static void nv50_kms_free_crtc(void *crtc)
  86 {
  87         struct nv50_kms_crtc *kms_crtc = from_nv50_crtc(crtc);
  88
  89         list_del(&kms_crtc->item);
  90
  91         kfree(kms_crtc);
  92 }
  93
  94 static void nv50_kms_free_output(void *output)
  95 {
  96         struct nv50_kms_encoder *kms_encoder = from_nv50_output(output);
  97
  98         list_del(&kms_encoder->item);
  99
 100         kfree(kms_encoder);
 101 }
 102
 103 static void nv50_kms_free_connector(void *connector)
 104 {
 105         struct nv50_kms_connector *kms_connector = from_nv50_connector(connector);
 106
 107         list_del(&kms_connector->item);
 108
 109         kfree(kms_connector);
 110 }
 111
 112 /*
 113  * Mode conversion functions.
 114  */
 115
 116 static struct nouveau_hw_mode *nv50_kms_to_hw_mode(struct drm_display_mode *mode)
 117 {
 118         struct nouveau_hw_mode *hw_mode = kzalloc(sizeof(struct nouveau_hw_mode), GFP_KERNEL);
 119         if (!hw_mode)
 120                 return NULL;
 121
 122         /* create hw values. */
 123         hw_mode->clock = mode->clock;
 124         hw_mode->flags = hw_mode->flags;
 125
 126         hw_mode->hdisplay = mode->hdisplay;
 127         hw_mode->hsync_start = mode->hsync_start;
 128         hw_mode->hsync_end = mode->hsync_end;
 129         hw_mode->htotal = mode->htotal;
 130
 131         hw_mode->hblank_start = mode->hdisplay + 1;
 132         hw_mode->hblank_end = mode->htotal;
 133
 134         hw_mode->vdisplay = mode->vdisplay;
 135         hw_mode->vsync_start = mode->vsync_start;
 136         hw_mode->vsync_end = mode->vsync_end;
 137         hw_mode->vtotal = mode->vtotal;
 138
 139         hw_mode->vblank_start = mode->vdisplay + 1;
 140         hw_mode->vblank_end = mode->vtotal;
 141
 142         return hw_mode;
 143 }
 144
 145 /*
 146  * State mirroring functions.
 147  */
 148
 149 static void nv50_kms_mirror_routing(struct drm_device *dev)
 150 {
 151         struct nv50_display *display = nv50_get_display(dev);
 152         struct nv50_crtc *crtc = NULL;
 153         struct nv50_output *output = NULL;
 154         struct nv50_connector *connector = NULL;
 155         struct drm_connector *drm_connector = NULL;
 156         struct drm_crtc *drm_crtc = NULL;
 157
 158         /* Wipe all previous connections. */
 159         list_for_each_entry(connector, &display->connectors, item) {
 160                 connector->output = NULL;
 161         }
 162
 163         list_for_each_entry(output, &display->outputs, item) {
 164                 output->crtc = NULL;
 165         }
 166
 167         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 168                 if (drm_connector->encoder) {
 169                         output = to_nv50_output(drm_connector->encoder);
 170                         connector = to_nv50_connector(drm_connector);
 171
 172                         /* hook up output to connector. */
 173                         connector->output = output;
 174
 175                         if (drm_connector->encoder->crtc) {
 176                                 crtc = to_nv50_crtc(drm_connector->encoder->crtc);
 177
 178                                 /* hook up output to crtc. */
 179                                 output->crtc = crtc;
 180                         }
 181                 }
 182         }
 183
 184         /* mirror crtc active state */
 185         list_for_each_entry(drm_crtc, &dev->mode_config.crtc_list, head) {
 186                 crtc = to_nv50_crtc(drm_crtc);
 187
 188                 crtc->enabled = drm_crtc->enabled;
 189         }
 190 }
 191
 192 /*
 193  * FB functions.
 194  */
 195
 196 static void nv50_kms_framebuffer_destroy(struct drm_framebuffer *drm_framebuffer)
 197 {
 198         drm_framebuffer_cleanup(drm_framebuffer);
 199
 200         kfree(drm_framebuffer);
 201 }
 202
 203 static const struct drm_framebuffer_funcs nv50_kms_fb_funcs = {
 204         .destroy = nv50_kms_framebuffer_destroy,
 205 };
 206
 207 /*
 208  * Mode config functions.
 209  */
 210
 211 static struct drm_framebuffer *nv50_kms_framebuffer_create(struct drm_device *dev,
 212                                                 struct drm_file *file_priv, struct drm_mode_fb_cmd *mode_cmd)
 213 {
 214         struct drm_framebuffer *drm_framebuffer = kzalloc(sizeof(struct drm_framebuffer), GFP_KERNEL);
 215         if (!drm_framebuffer)
 216                 return NULL;
 217
 218         drm_framebuffer_init(dev, drm_framebuffer, &nv50_kms_fb_funcs);
 219         drm_helper_mode_fill_fb_struct(drm_framebuffer, mode_cmd);
 220
 221         return drm_framebuffer;
 222 }
 223
 224 static int nv50_kms_fb_changed(struct drm_device *dev)
 225 {
 226         return 0; /* not needed until nouveaufb? */
 227 }
 228
 229 static const struct drm_mode_config_funcs nv50_kms_mode_funcs = {
 230         .resize_fb = NULL,
 231         .fb_create = nv50_kms_framebuffer_create,
 232         .fb_changed = nv50_kms_fb_changed,
 233 };
 234
 235 /*
 236  * CRTC functions.
 237  */
 238
 239 static int nv50_kms_crtc_cursor_set(struct drm_crtc *drm_crtc,
 240                                     struct drm_file *file_priv,
 241                                     uint32_t buffer_handle,
 242                                     uint32_t width, uint32_t height)
 243 {
 244         struct nv50_crtc *crtc = to_nv50_crtc(drm_crtc);
 245         struct nv50_display *display = nv50_get_display(crtc->dev);
 246         int rval = 0;
 247
 248         if (width != 64 || height != 64)
 249                 return -EINVAL;
 250
 251         /* set bo before doing show cursor */
 252         if (buffer_handle) {
 253                 rval = crtc->cursor->set_bo(crtc, (drm_handle_t) buffer_handle);
 254                 if (rval != 0)
 255                         goto out;
 256         }
 257
 258         crtc->cursor->visible = buffer_handle ? true : false;
 259
 260         if (buffer_handle) {
 261                 rval = crtc->cursor->show(crtc);
 262                 if (rval != 0)
 263                         goto out;
 264         } else { /* no handle implies hiding the cursor */
 265                 rval = crtc->cursor->hide(crtc);
 266                 goto out;
 267         }
 268
 269         if (rval != 0)
 270                 return rval;
 271
 272 out:
 273         /* in case this triggers any other cursor changes */
 274         display->update(display);
 275
 276         return rval;
 277 }
 278
 279 static int nv50_kms_crtc_cursor_move(struct drm_crtc *drm_crtc, int x, int y)
 280 {
 281         struct nv50_crtc *crtc = to_nv50_crtc(drm_crtc);
 282
 283         return crtc->cursor->set_pos(crtc, x, y);
 284 }
 285
 286 void nv50_kms_crtc_gamma_set(struct drm_crtc *drm_crtc, u16 *r, u16 *g, u16 *b,
 287                 uint32_t size)
 288 {
 289         struct nv50_crtc *crtc = to_nv50_crtc(drm_crtc);
 290
 291         if (size != 256)
 292                 return;
 293
 294         crtc->lut->set(crtc, (uint16_t *)r, (uint16_t *)g, (uint16_t *)b);
 295 }
 296
 297 int nv50_kms_crtc_set_config(struct drm_mode_set *set)
 298 {
 299         int rval = 0, i;
 300         uint32_t crtc_mask = 0;
 301         struct drm_device *dev = NULL;
 302         struct drm_nouveau_private *dev_priv = NULL;
 303         struct nv50_display *display = NULL;
 304         struct drm_connector *drm_connector = NULL;
 305         struct drm_encoder *drm_encoder = NULL;
 306         struct drm_crtc *drm_crtc = NULL;
 307
 308         struct nv50_crtc *crtc = NULL;
 309         struct nv50_output *output = NULL;
 310         struct nv50_connector *connector = NULL;
 311         struct nouveau_hw_mode *hw_mode = NULL;
 312         struct nv50_fb_info fb_info;
 313
 314         bool blank = false;
 315         bool switch_fb = false;
 316         bool modeset = false;
 317
 318         NV50_DEBUG("\n");
 319
 320         /*
 321          * Supported operations:
 322          * - Switch mode.
 323          * - Switch framebuffer.
 324          * - Blank screen.
 325          */
 326
 327         /* Sanity checking */
 328         if (!set) {
 329                 DRM_ERROR("Sanity check failed\n");
 330                 goto out;
 331         }
 332
 333         if (!set->crtc) {
 334                 DRM_ERROR("Sanity check failed\n");
 335                 goto out;
 336         }
 337
 338         if (set->mode) {
 339                 if (set->fb) {
 340                         if (!drm_mode_equal(set->mode, &set->crtc->mode))
 341                                 modeset = true;
 342
 343                         if (set->fb != set->crtc->fb)
 344                                 switch_fb = true;
 345
 346                         if (set->x != set->crtc->x || set->y != set->crtc->y)
 347                                 switch_fb = true;
 348                 }
 349         } else {
 350                 blank = true;
 351         }
 352
 353         if (!set->connectors && !blank) {
 354                 DRM_ERROR("Sanity check failed\n");
 355                 goto out;
 356         }
 357
 358         /* Basic variable setting */
 359         dev = set->crtc->dev;
 360         dev_priv = dev->dev_private;
 361         display = nv50_get_display(dev);
 362         crtc = to_nv50_crtc(set->crtc);
 363
 364         /**
 365          * Wiring up the encoders and connectors.
 366          */
 367
 368         /* for switch_fb we verify if any important changes happened */
 369         if (!blank) {
 370                 /* Mode validation */
 371                 hw_mode = nv50_kms_to_hw_mode(set->mode);
 372
 373                 rval = crtc->validate_mode(crtc, hw_mode);
 374
 375                 if (rval != MODE_OK) {
 376                         DRM_ERROR("Mode not ok\n");
 377                         goto out;
 378                 }
 379
 380                 for (i = 0; i < set->num_connectors; i++) {
 381                         drm_connector = set->connectors[i];
 382                         if (!drm_connector) {
 383                                 DRM_ERROR("No connector\n");
 384                                 goto out;
 385                         }
 386                         connector = to_nv50_connector(drm_connector);
 387
 388                         /* This is to ensure it knows the connector subtype. */
 389                         drm_connector->funcs->fill_modes(drm_connector, 0, 0);
 390
 391                         output = connector->to_output(connector, nv50_kms_connector_get_digital(drm_connector));
 392                         if (!output) {
 393                                 DRM_ERROR("No output\n");
 394                                 goto out;
 395                         }
 396
 397                         rval = output->validate_mode(output, hw_mode);
 398                         if (rval != MODE_OK) {
 399                                 DRM_ERROR("Mode not ok\n");
 400                                 goto out;
 401                         }
 402
 403                         /* verify if any "sneaky" changes happened */
 404                         if (output != connector->output)
 405                                 modeset = true;
 406
 407                         if (output->crtc != crtc)
 408                                 modeset = true;
 409                 }
 410         }
 411
 412         /* Now we verified if anything changed, fail if nothing has. */
 413         if (!modeset && !switch_fb && !blank)
 414                 DRM_INFO("A seemingly empty modeset encountered, this could be a bug.\n");
 415
 416         /* Validation done, move on to cleaning of existing structures. */
 417         if (modeset) {
 418                 /* find encoders that use this crtc. */
 419                 list_for_each_entry(drm_encoder, &dev->mode_config.encoder_list, head) {
 420                         if (drm_encoder->crtc == set->crtc) {
 421                                 /* find the connector that goes with it */
 422                                 list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 423                                         if (drm_connector->encoder == drm_encoder) {
 424                                                 drm_connector->encoder =  NULL;
 425                                                 break;
 426                                         }
 427                                 }
 428                                 drm_encoder->crtc = NULL;
 429                         }
 430                 }
 431
 432                 /* now find if our desired encoders or connectors are in use already. */
 433                 for (i = 0; i < set->num_connectors; i++) {
 434                         drm_connector = set->connectors[i];
 435                         if (!drm_connector) {
 436                                 DRM_ERROR("No connector\n");
 437                                 goto out;
 438                         }
 439
 440                         if (!drm_connector->encoder)
 441                                 continue;
 442
 443                         drm_encoder = drm_connector->encoder;
 444                         drm_connector->encoder = NULL;
 445
 446                         if (!drm_encoder->crtc)
 447                                 continue;
 448
 449                         drm_crtc = drm_encoder->crtc;
 450                         drm_encoder->crtc = NULL;
 451
 452                         drm_crtc->enabled = false;
 453                 }
 454
 455                 /* Time to wire up the public encoder, the private one will be handled later. */
 456                 for (i = 0; i < set->num_connectors; i++) {
 457                         drm_connector = set->connectors[i];
 458                         if (!drm_connector) {
 459                                 DRM_ERROR("No connector\n");
 460                                 goto out;
 461                         }
 462
 463                         output = connector->to_output(connector, nv50_kms_connector_get_digital(drm_connector));
 464                         if (!output) {
 465                                 DRM_ERROR("No output\n");
 466                                 goto out;
 467                         }
 468
 469                         /* find the encoder public structure that matches out output structure. */
 470                         drm_encoder = to_nv50_kms_encoder(output);
 471
 472                         if (!drm_encoder) {
 473                                 DRM_ERROR("No encoder\n");
 474                                 goto out;
 475                         }
 476
 477                         drm_encoder->crtc = set->crtc;
 478                         set->crtc->enabled = true;
 479                         drm_connector->encoder = drm_encoder;
 480                 }
 481         }
 482
 483         /**
 484          * Disable crtc.
 485          */
 486
 487         if (blank) {
 488                 crtc = to_nv50_crtc(set->crtc);
 489
 490                 set->crtc->enabled = false;
 491
 492                 /* disconnect encoders and connectors */
 493                 for (i = 0; i < set->num_connectors; i++) {
 494                         drm_connector = set->connectors[i];
 495
 496                         if (!drm_connector->encoder)
 497                                 continue;
 498
 499                         drm_connector->encoder->crtc = NULL;
 500                         drm_connector->encoder = NULL;
 501                 }
 502         }
 503
 504         /**
 505          * All state should now be updated, now onto the real work.
 506          */
 507
 508         /* mirror everything to the private structs */
 509         nv50_kms_mirror_routing(dev);
 510
 511         /**
 512          * Bind framebuffer.
 513          */
 514
 515         if (switch_fb) {
 516                 crtc = to_nv50_crtc(set->crtc);
 517
 518                 /* set framebuffer */
 519                 set->crtc->fb = set->fb;
 520
 521                 /* set private framebuffer */
 522                 crtc = to_nv50_crtc(set->crtc);
 523                 fb_info.block = find_block_by_handle(dev_priv->fb_heap, set->fb->mm_handle);
 524                 fb_info.width = set->fb->width;
 525                 fb_info.height = set->fb->height;
 526                 fb_info.depth = set->fb->depth;
 527                 fb_info.bpp = set->fb->bits_per_pixel;
 528                 fb_info.pitch = set->fb->pitch;
 529                 fb_info.x = set->x;
 530                 fb_info.y = set->y;
 531
 532                 rval = crtc->fb->bind(crtc, &fb_info);
 533                 if (rval != 0) {
 534                         DRM_ERROR("fb_bind failed\n");
 535                         goto out;
 536                 }
 537         }
 538
 539         /* this is !cursor_show */
 540         if (!crtc->cursor->enabled) {
 541                 rval = crtc->cursor->enable(crtc);
 542                 if (rval != 0) {
 543                         DRM_ERROR("cursor_enable failed\n");
 544                         goto out;
 545                 }
 546         }
 547
 548         /**
 549          * Blanking.
 550          */
 551
 552         if (blank) {
 553                 crtc = to_nv50_crtc(set->crtc);
 554
 555                 rval = crtc->blank(crtc, true);
 556                 if (rval != 0) {
 557                         DRM_ERROR("blanking failed\n");
 558                         goto out;
 559                 }
 560
 561                 /* detach any outputs that are currently unused */
 562                 list_for_each_entry(drm_encoder, &dev->mode_config.encoder_list, head) {
 563                         if (!drm_encoder->crtc) {
 564                                 output = to_nv50_output(drm_encoder);
 565
 566                                 rval = output->execute_mode(output, true);
 567                                 if (rval != 0) {
 568                                         DRM_ERROR("detaching output failed\n");
 569                                         goto out;
 570                                 }
 571                         }
 572                 }
 573         }
 574
 575         /**
 576          * Change framebuffer, without changing mode.
 577          */
 578
 579         if (switch_fb && !modeset && !blank) {
 580                 crtc = to_nv50_crtc(set->crtc);
 581
 582                 rval = crtc->set_fb(crtc);
 583                 if (rval != 0) {
 584                         DRM_ERROR("set_fb failed\n");
 585                         goto out;
 586                 }
 587
 588                 /* this also sets the fb offset */
 589                 rval = crtc->blank(crtc, false);
 590                 if (rval != 0) {
 591                         DRM_ERROR("unblanking failed\n");
 592                         goto out;
 593                 }
 594         }
 595
 596         /**
 597          * Normal modesetting.
 598          */
 599
 600         if (modeset) {
 601                 crtc = to_nv50_crtc(set->crtc);
 602
 603                 /* disconnect unused outputs */
 604                 list_for_each_entry(output, &display->outputs, item) {
 605                         if (output->crtc) {
 606                                 crtc_mask |= 1 << output->crtc->index;
 607                         } else {
 608                                 rval = output->execute_mode(output, true);
 609                                 if (rval != 0) {
 610                                         DRM_ERROR("detaching output failed\n");
 611                                         goto out;
 612                                 }
 613                         }
 614                 }
 615
 616                 /* blank any unused crtcs */
 617                 list_for_each_entry(crtc, &display->crtcs, item) {
 618                         if (!(crtc_mask & (1 << crtc->index)))
 619                                 crtc->blank(crtc, true);
 620                 }
 621
 622                 crtc = to_nv50_crtc(set->crtc);
 623
 624                 rval = crtc->set_mode(crtc, hw_mode);
 625                 if (rval != 0) {
 626                         DRM_ERROR("crtc mode set failed\n");
 627                         goto out;
 628                 }
 629
 630                 /* find native mode. */
 631                 list_for_each_entry(output, &display->outputs, item) {
 632                         if (output->crtc != crtc)
 633                                 continue;
 634
 635                         *crtc->native_mode = *output->native_mode;
 636                         list_for_each_entry(connector, &display->connectors, item) {
 637                                 if (connector->output != output)
 638                                         continue;
 639
 640                                 crtc->requested_scaling_mode = connector->requested_scaling_mode;
 641                                 crtc->use_dithering = connector->use_dithering;
 642                                 break;
 643                         }
 644
 645                         if (crtc->requested_scaling_mode == SCALE_NON_GPU)
 646                                 crtc->use_native_mode = false;
 647                         else
 648                                 crtc->use_native_mode = true;
 649
 650                         break; /* no use in finding more than one mode */
 651                 }
 652
 653                 rval = crtc->execute_mode(crtc);
 654                 if (rval != 0) {
 655                         DRM_ERROR("crtc execute mode failed\n");
 656                         goto out;
 657                 }
 658
 659                 list_for_each_entry(output, &display->outputs, item) {
 660                         if (output->crtc != crtc)
 661                                 continue;
 662
 663                         rval = output->execute_mode(output, false);
 664                         if (rval != 0) {
 665                                 DRM_ERROR("output execute mode failed\n");
 666                                 goto out;
 667                         }
 668                 }
 669
 670                 rval = crtc->set_scale(crtc);
 671                 if (rval != 0) {
 672                         DRM_ERROR("crtc set scale failed\n");
 673                         goto out;
 674                 }
 675
 676                 /* next line changes crtc, so putting it here is important */
 677                 display->last_crtc = crtc->index;
 678         }
 679
 680         /* always reset dpms, regardless if any other modesetting is done. */
 681         if (!blank) {
 682                 /* this is executed immediately */
 683                 list_for_each_entry(output, &display->outputs, item) {
 684                         if (output->crtc != crtc)
 685                                 continue;
 686
 687                         rval = output->set_power_mode(output, DRM_MODE_DPMS_ON);
 688                         if (rval != 0) {
 689                                 DRM_ERROR("output set power mode failed\n");
 690                                 goto out;
 691                         }
 692                 }
 693
 694                 /* update dpms state to DPMSModeOn */
 695                 for (i = 0; i < set->num_connectors; i++) {
 696                         drm_connector = set->connectors[i];
 697                         if (!drm_connector) {
 698                                 DRM_ERROR("No connector\n");
 699                                 goto out;
 700                         }
 701
 702                         rval = drm_connector_property_set_value(drm_connector,
 703                                         dev->mode_config.dpms_property,
 704                                         DRM_MODE_DPMS_ON);
 705                         if (rval != 0) {
 706                                 DRM_ERROR("failed to update dpms state\n");
 707                                 goto out;
 708                         }
 709                 }
 710         }
 711
 712         display->update(display);
 713
 714         /* Update the current mode, now that all has gone well. */
 715         if (modeset) {
 716                 set->crtc->mode = *(set->mode);
 717                 set->crtc->x = set->x;
 718                 set->crtc->y = set->y;
 719         }
 720
 721         kfree(hw_mode);
 722
 723         return 0;
 724
 725 out:
 726         kfree(hw_mode);
 727
 728         if (rval != 0)
 729                 return rval;
 730         else
 731                 return -EINVAL;
 732 }
 733
 734 static void nv50_kms_crtc_destroy(struct drm_crtc *drm_crtc)
 735 {
 736         struct nv50_crtc *crtc = to_nv50_crtc(drm_crtc);
 737
 738         drm_crtc_cleanup(drm_crtc);
 739
 740         /* this will even destroy the public structure. */
 741         crtc->destroy(crtc);
 742 }
 743
 744 static const struct drm_crtc_funcs nv50_kms_crtc_funcs = {
 745         .save = NULL,
 746         .restore = NULL,
 747         .cursor_set = nv50_kms_crtc_cursor_set,
 748         .cursor_move = nv50_kms_crtc_cursor_move,
 749         .gamma_set = nv50_kms_crtc_gamma_set,
 750         .set_config = nv50_kms_crtc_set_config,
 751         .destroy = nv50_kms_crtc_destroy,
 752 };
 753
 754 static int nv50_kms_crtcs_init(struct drm_device *dev)
 755 {
 756         struct nv50_display *display = nv50_get_display(dev);
 757         struct nv50_crtc *crtc = NULL;
 758
 759         /*
 760          * This may look a bit confusing, but:
 761          * The internal structure is already allocated and so is the public one.
 762          * Just a matter of getting to the memory and register it.
 763          */
 764         list_for_each_entry(crtc, &display->crtcs, item) {
 765                 struct drm_crtc *drm_crtc = to_nv50_kms_crtc(crtc);
 766
 767                 drm_crtc_init(dev, drm_crtc, &nv50_kms_crtc_funcs);
 768
 769                 /* init lut storage */
 770                 drm_mode_crtc_set_gamma_size(drm_crtc, 256);
 771         }
 772
 773         return 0;
 774 }
 775
 776 /*
 777  * Encoder functions
 778  */
 779
 780 static void nv50_kms_encoder_destroy(struct drm_encoder *drm_encoder)
 781 {
 782         struct nv50_output *output = to_nv50_output(drm_encoder);
 783
 784         drm_encoder_cleanup(drm_encoder);
 785
 786         /* this will even destroy the public structure. */
 787         output->destroy(output);
 788 }
 789
 790 static const struct drm_encoder_funcs nv50_kms_encoder_funcs = {
 791         .destroy = nv50_kms_encoder_destroy,
 792 };
 793
 794 static int nv50_kms_encoders_init(struct drm_device *dev)
 795 {
 796         struct nv50_display *display = nv50_get_display(dev);
 797         struct nv50_output *output = NULL;
 798
 799         list_for_each_entry(output, &display->outputs, item) {
 800                 struct drm_encoder *drm_encoder = to_nv50_kms_encoder(output);
 801                 uint32_t type = DRM_MODE_ENCODER_NONE;
 802
 803                 switch (output->type) {
 804                         case OUTPUT_DAC:
 805                                 type = DRM_MODE_ENCODER_DAC;
 806                                 break;
 807                         case OUTPUT_TMDS:
 808                                 type = DRM_MODE_ENCODER_TMDS;
 809                                 break;
 810                         case OUTPUT_LVDS:
 811                                 type = DRM_MODE_ENCODER_LVDS;
 812                                 break;
 813                         case OUTPUT_TV:
 814                                 type = DRM_MODE_ENCODER_TVDAC;
 815                                 break;
 816                         default:
 817                                 type = DRM_MODE_ENCODER_NONE;
 818                                 break;
 819                 }
 820
 821                 if (type == DRM_MODE_ENCODER_NONE) {
 822                         DRM_ERROR("DRM_MODE_ENCODER_NONE encountered\n");
 823                         continue;
 824                 }
 825
 826                 drm_encoder_init(dev, drm_encoder, &nv50_kms_encoder_funcs, type);
 827
 828                 /* I've never seen possible crtc's restricted. */
 829                 drm_encoder->possible_crtcs = 3;
 830                 drm_encoder->possible_clones = 0;
 831         }
 832
 833         return 0;
 834 }
 835
 836 /*
 837  * Connector functions
 838  */
 839
 840
 841 /* These 2 functions wrap the connector properties that deal with multiple encoders per connector. */
 842 bool nv50_kms_connector_get_digital(struct drm_connector *drm_connector)
 843 {
 844         struct drm_device *dev = drm_connector->dev;
 845
 846         switch (drm_connector->connector_type) {
 847                 case DRM_MODE_CONNECTOR_VGA:
 848                 case DRM_MODE_CONNECTOR_SVIDEO:
 849                         return false;
 850                 case DRM_MODE_CONNECTOR_DVID:
 851                 case DRM_MODE_CONNECTOR_LVDS:
 852                         return true;
 853                 default:
 854                         break;
 855         }
 856
 857         if (drm_connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 858                 int rval;
 859                 uint64_t prop_val;
 860
 861                 rval = drm_connector_property_get_value(drm_connector, dev->mode_config.dvi_i_select_subconnector_property, &prop_val);
 862                 if (rval) {
 863                         DRM_ERROR("Unable to find select subconnector property, defaulting to DVI-D\n");
 864                         return true;
 865                 }
 866
 867                 /* Is a subconnector explicitly selected? */
 868                 switch (prop_val) {
 869                         case DRM_MODE_SUBCONNECTOR_DVID:
 870                                 return true;
 871                         case DRM_MODE_SUBCONNECTOR_DVIA:
 872                                 return false;
 873                         default:
 874                                 break;
 875                 }
 876
 877                 rval = drm_connector_property_get_value(drm_connector, dev->mode_config.dvi_i_subconnector_property, &prop_val);
 878                 if (rval) {
 879                         DRM_ERROR("Unable to find subconnector property, defaulting to DVI-D\n");
 880                         return true;
 881                 }
 882
 883                 /* Do we know what subconnector we currently have connected? */
 884                 switch (prop_val) {
 885                         case DRM_MODE_SUBCONNECTOR_DVID:
 886                                 return true;
 887                         case DRM_MODE_SUBCONNECTOR_DVIA:
 888                                 return false;
 889                         default:
 890                                 DRM_ERROR("Unknown subconnector value, defaulting to DVI-D\n");
 891                                 return true;
 892                 }
 893         }
 894
 895         DRM_ERROR("Unknown connector type, defaulting to analog\n");
 896         return false;
 897 }
 898
 899 static void nv50_kms_connector_set_digital(struct drm_connector *drm_connector, int digital, bool force)
 900 {
 901         struct drm_device *dev = drm_connector->dev;
 902
 903         if (drm_connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 904                 uint64_t cur_value, new_value;
 905
 906                 int rval = drm_connector_property_get_value(drm_connector, dev->mode_config.dvi_i_subconnector_property, &cur_value);
 907                 if (rval) {
 908                         DRM_ERROR("Unable to find subconnector property\n");
 909                         return;
 910                 }
 911
 912                 /* Only set when unknown or when forced to do so. */
 913                 if (cur_value != DRM_MODE_SUBCONNECTOR_Unknown && !force)
 914                         return;
 915
 916                 if (digital == 1)
 917                         new_value = DRM_MODE_SUBCONNECTOR_DVID;
 918                 else if (digital == 0)
 919                         new_value = DRM_MODE_SUBCONNECTOR_DVIA;
 920                 else
 921                         new_value = DRM_MODE_SUBCONNECTOR_Unknown;
 922                 drm_connector_property_set_value(drm_connector, dev->mode_config.dvi_i_subconnector_property, new_value);
 923         }
 924 }
 925
 926 void nv50_kms_connector_detect_all(struct drm_device *dev)
 927 {
 928         struct drm_connector *drm_connector = NULL;
 929
 930         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 931                 drm_connector->funcs->detect(drm_connector);
 932         }
 933 }
 934
 935 static enum drm_connector_status nv50_kms_connector_detect(struct drm_connector *drm_connector)
 936 {
 937         struct drm_device *dev = drm_connector->dev;
 938         struct nv50_connector *connector = to_nv50_connector(drm_connector);
 939         struct nv50_output *output = NULL;
 940         int hpd_detect = 0, load_detect = 0, i2c_detect = 0;
 941         int old_status = drm_connector->status;
 942
 943         /* hotplug detect */
 944         hpd_detect = connector->hpd_detect(connector);
 945
 946         /* load detect */
 947         output = connector->to_output(connector, false); /* analog */
 948         if (output && output->detect)
 949                 load_detect = output->detect(output);
 950
 951         if (hpd_detect < 0 || load_detect < 0) /* did an error occur? */
 952                 i2c_detect = connector->i2c_detect(connector);
 953
 954         if (load_detect == 1) {
 955                 nv50_kms_connector_set_digital(drm_connector, 0, true); /* analog, forced */
 956         } else if (hpd_detect == 1 && load_detect == 0) {
 957                 nv50_kms_connector_set_digital(drm_connector, 1, true); /* digital, forced */
 958         } else {
 959                 nv50_kms_connector_set_digital(drm_connector, -1, true); /* unknown, forced */
 960         }
 961
 962         if (hpd_detect == 1 || load_detect == 1 || i2c_detect == 1)
 963                 drm_connector->status = connector_status_connected;
 964         else
 965                 drm_connector->status = connector_status_disconnected;
 966
 967         /* update our modes whenever there is reason to */
 968         if (old_status != drm_connector->status) {
 969                 drm_connector->funcs->fill_modes(drm_connector, 0, 0);
 970
 971                 /* notify fb of changes */
 972                 dev->mode_config.funcs->fb_changed(dev);
 973         }
 974
 975         return drm_connector->status;
 976 }
 977
 978 static void nv50_kms_connector_destroy(struct drm_connector *drm_connector)
 979 {
 980         struct nv50_connector *connector = to_nv50_connector(drm_connector);
 981
 982         drm_sysfs_connector_remove(drm_connector);
 983         drm_connector_cleanup(drm_connector);
 984
 985         /* this will even destroy the public structure. */
 986         connector->destroy(connector);
 987 }
 988
 989 /*
 990  * Detailed mode info for a standard 640x480@60Hz monitor
 991  */
 992 static struct drm_display_mode std_mode[] = {
 993         /*{ DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 25200, 640, 656,
 994                  752, 800, 0, 480, 490, 492, 525, 0,
 995                  DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },*/ /* 640x480@60Hz */
 996         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DEFAULT, 135000, 1280, 1296,
 997                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
 998                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, /* 1280x1024@75Hz */
 999 };
1000
1001 static void nv50_kms_connector_fill_modes(struct drm_connector *drm_connector, uint32_t maxX, uint32_t maxY)
1002 {
1003         struct nv50_connector *connector = to_nv50_connector(drm_connector);
1004         struct drm_device *dev = drm_connector->dev;
1005         int rval = 0;
1006         bool connected = false;
1007         struct drm_display_mode *mode, *t;
1008         struct edid *edid = NULL;
1009
1010         NV50_DEBUG("%s\n", drm_get_connector_name(drm_connector));
1011         /* set all modes to the unverified state */
1012         list_for_each_entry_safe(mode, t, &drm_connector->modes, head)
1013                 mode->status = MODE_UNVERIFIED;
1014
1015         if (nv50_kms_connector_detect(drm_connector) == connector_status_connected)
1016                 connected = true;
1017
1018         if (connected)
1019                 NV50_DEBUG("%s is connected\n", drm_get_connector_name(drm_connector));
1020         else
1021                 NV50_DEBUG("%s is disconnected\n", drm_get_connector_name(drm_connector));
1022
1023         /* Not all connnectors have an i2c channel. */
1024         if (connected && connector->i2c_chan)
1025                 edid = (struct edid *) drm_do_probe_ddc_edid(&connector->i2c_chan->adapter);
1026
1027         /* This will remove edid if needed. */
1028         drm_mode_connector_update_edid_property(drm_connector, edid);
1029
1030         if (edid) {
1031                 rval = drm_add_edid_modes(drm_connector, edid);
1032
1033                 /* Only update when relevant and when detect couldn't determine type. */
1034                 nv50_kms_connector_set_digital(drm_connector, edid->digital ? 1 : 0, false);
1035
1036                 kfree(edid);
1037         }
1038
1039         if (rval) /* number of modes  > 1 */
1040                 drm_mode_connector_list_update(drm_connector);
1041
1042         if (maxX && maxY)
1043                 drm_mode_validate_size(dev, &drm_connector->modes, maxX, maxY, 0);
1044
1045         list_for_each_entry_safe(mode, t, &drm_connector->modes, head) {
1046                 if (mode->status == MODE_OK) {
1047                         struct nouveau_hw_mode *hw_mode = nv50_kms_to_hw_mode(mode);
1048                         struct nv50_output *output = connector->to_output(connector, nv50_kms_connector_get_digital(drm_connector));
1049
1050                         mode->status = output->validate_mode(output, hw_mode);
1051                         /* find native mode, TODO: also check if we actually found one */
1052                         if (mode->status == MODE_OK) {
1053                                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
1054                                         *output->native_mode = *hw_mode;
1055                         }
1056                         kfree(hw_mode);
1057                 }
1058         }
1059
1060         /* revalidate now that we have native mode */
1061         list_for_each_entry_safe(mode, t, &drm_connector->modes, head) {
1062                 if (mode->status == MODE_OK) {
1063                         struct nouveau_hw_mode *hw_mode = nv50_kms_to_hw_mode(mode);
1064                         struct nv50_output *output = connector->to_output(connector, nv50_kms_connector_get_digital(drm_connector));
1065
1066                         mode->status = output->validate_mode(output, hw_mode);
1067                         kfree(hw_mode);
1068                 }
1069         }
1070
1071         drm_mode_prune_invalid(dev, &drm_connector->modes, true);
1072
1073         /* pruning is done, so bail out. */
1074         if (!connected)
1075                 return;
1076
1077         if (list_empty(&drm_connector->modes)) {
1078                 struct drm_display_mode *stdmode;
1079                 struct nouveau_hw_mode *hw_mode;
1080                 struct nv50_output *output;
1081
1082                 NV50_DEBUG("No valid modes on %s\n", drm_get_connector_name(drm_connector));
1083
1084                 /* Making up native modes for LVDS is a bad idea. */
1085                 if (drm_connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
1086                         return;
1087
1088                 /* Should we do this here ???
1089                  * When no valid EDID modes are available we end up
1090                  * here and bailed in the past, now we add a standard
1091                  * 640x480@60Hz mode and carry on.
1092                  */
1093                 stdmode = drm_mode_duplicate(dev, &std_mode[0]);
1094                 drm_mode_probed_add(drm_connector, stdmode);
1095                 drm_mode_list_concat(&drm_connector->probed_modes,
1096                                      &drm_connector->modes);
1097
1098                 /* also add it as native mode */
1099                 hw_mode = nv50_kms_to_hw_mode(mode);
1100                 output = connector->to_output(connector, nv50_kms_connector_get_digital(drm_connector));
1101
1102                 if (hw_mode)
1103                         *output->native_mode = *hw_mode;
1104
1105                 DRM_DEBUG("Adding standard 640x480 @ 60Hz to %s\n",
1106                           drm_get_connector_name(drm_connector));
1107         }
1108
1109         drm_mode_sort(&drm_connector->modes);
1110
1111         NV50_DEBUG("Probed modes for %s\n", drm_get_connector_name(drm_connector));
1112
1113         list_for_each_entry_safe(mode, t, &drm_connector->modes, head) {
1114                 mode->vrefresh = drm_mode_vrefresh(mode);
1115
1116                 /* is this needed, as it's unused by the driver? */
1117                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1118                 drm_mode_debug_printmodeline(mode);
1119         }
1120 }
1121
1122 static int nv50_kms_connector_set_property(struct drm_connector *drm_connector,
1123                                         struct drm_property *property,
1124                                         uint64_t value)
1125 {
1126         struct drm_device *dev = drm_connector->dev;
1127         struct nv50_connector *connector = to_nv50_connector(drm_connector);
1128         int rval = 0;
1129         bool delay_change = false;
1130
1131         /* DPMS */
1132         if (property == dev->mode_config.dpms_property && drm_connector->encoder) {
1133                 struct nv50_output *output = to_nv50_output(drm_connector->encoder);
1134
1135                 rval = output->set_power_mode(output, (int) value);
1136
1137                 return rval;
1138         }
1139
1140         /* Scaling mode */
1141         if (property == dev->mode_config.scaling_mode_property) {
1142                 struct nv50_crtc *crtc = NULL;
1143                 struct nv50_display *display = nv50_get_display(dev);
1144                 int internal_value = 0;
1145
1146                 switch (value) {
1147                         case DRM_MODE_SCALE_NON_GPU:
1148                                 internal_value = SCALE_NON_GPU;
1149                                 break;
1150                         case DRM_MODE_SCALE_FULLSCREEN:
1151                                 internal_value = SCALE_FULLSCREEN;
1152                                 break;
1153                         case DRM_MODE_SCALE_NO_SCALE:
1154                                 internal_value = SCALE_NOSCALE;
1155                                 break;
1156                         case DRM_MODE_SCALE_ASPECT:
1157                                 internal_value = SCALE_ASPECT;
1158                                 break;
1159                         default:
1160                                 break;
1161                 }
1162
1163                 /* LVDS always needs gpu scaling */
1164                 if (connector->type == CONNECTOR_LVDS && internal_value == SCALE_NON_GPU)
1165                         return -EINVAL;
1166
1167                 connector->requested_scaling_mode = internal_value;
1168
1169                 if (drm_connector->encoder && drm_connector->encoder->crtc)
1170                         crtc = to_nv50_crtc(drm_connector->encoder->crtc);
1171
1172                 if (!crtc)
1173                         return 0;
1174
1175                 crtc->requested_scaling_mode = connector->requested_scaling_mode;
1176
1177                 /* going from and to a gpu scaled regime requires a modesetting, so wait until next modeset */
1178                 if (crtc->scaling_mode == SCALE_NON_GPU || internal_value == SCALE_NON_GPU) {
1179                         DRM_INFO("Moving from or to a non-gpu scaled mode, this will be processed upon next modeset.");
1180                         delay_change = true;
1181                 }
1182
1183                 if (delay_change)
1184                         return 0;
1185
1186                 rval = crtc->set_scale(crtc);
1187                 if (rval)
1188                         return rval;
1189
1190                 /* process command buffer */
1191                 display->update(display);
1192
1193                 return 0;
1194         }
1195
1196         /* Dithering */
1197         if (property == dev->mode_config.dithering_mode_property) {
1198                 struct nv50_crtc *crtc = NULL;
1199                 struct nv50_display *display = nv50_get_display(dev);
1200
1201                 if (value == DRM_MODE_DITHERING_ON)
1202                         connector->use_dithering = true;
1203                 else
1204                         connector->use_dithering = false;
1205
1206                 if (drm_connector->encoder && drm_connector->encoder->crtc)
1207                         crtc = to_nv50_crtc(drm_connector->encoder->crtc);
1208
1209                 if (!crtc)
1210                         return 0;
1211
1212                 /* update hw state */
1213                 crtc->use_dithering = connector->use_dithering;
1214                 rval = crtc->set_dither(crtc);
1215                 if (rval)
1216                         return rval;
1217
1218                 /* process command buffer */
1219                 display->update(display);
1220
1221                 return 0;
1222         }
1223
1224         return -EINVAL;
1225 }
1226
1227 static const struct drm_connector_funcs nv50_kms_connector_funcs = {
1228         .save = NULL,
1229         .restore = NULL,
1230         .detect = nv50_kms_connector_detect,
1231         .destroy = nv50_kms_connector_destroy,
1232         .fill_modes = nv50_kms_connector_fill_modes,
1233         .set_property = nv50_kms_connector_set_property
1234 };
1235
1236 static int nv50_kms_get_scaling_mode(struct drm_connector *drm_connector)
1237 {
1238         struct nv50_connector *connector = NULL;
1239         int drm_mode = 0;
1240
1241         if (!drm_connector) {
1242                 DRM_ERROR("drm_connector is NULL\n");
1243                 return 0;
1244         }
1245
1246         connector = to_nv50_connector(drm_connector);
1247
1248         switch (connector->requested_scaling_mode) {
1249                 case SCALE_NON_GPU:
1250                         drm_mode = DRM_MODE_SCALE_NON_GPU;
1251                         break;
1252                 case SCALE_FULLSCREEN:
1253                         drm_mode = DRM_MODE_SCALE_FULLSCREEN;
1254                         break;
1255                 case SCALE_NOSCALE:
1256                         drm_mode = DRM_MODE_SCALE_NO_SCALE;
1257                         break;
1258                 case SCALE_ASPECT:
1259                         drm_mode = DRM_MODE_SCALE_ASPECT;
1260                         break;
1261                 default:
1262                         break;
1263         }
1264
1265         return drm_mode;
1266 }
1267
1268 static int nv50_kms_connectors_init(struct drm_device *dev)
1269 {
1270         struct nv50_display *display = nv50_get_display(dev);
1271         struct nv50_connector *connector = NULL;
1272         int i;
1273
1274         /* Initialise some optional connector properties. */
1275         drm_mode_create_scaling_mode_property(dev);
1276         drm_mode_create_dithering_property(dev);
1277
1278         list_for_each_entry(connector, &display->connectors, item) {
1279                 struct drm_connector *drm_connector = to_nv50_kms_connector(connector);
1280                 uint32_t type = DRM_MODE_CONNECTOR_Unknown;
1281
1282                 switch (connector->type) {
1283                         case CONNECTOR_VGA:
1284                                 type = DRM_MODE_CONNECTOR_VGA;
1285                                 break;
1286                         case CONNECTOR_DVI_D:
1287                                 type = DRM_MODE_CONNECTOR_DVID;
1288                                 break;
1289                         case CONNECTOR_DVI_I:
1290                                 type = DRM_MODE_CONNECTOR_DVII;
1291                                 break;
1292                         case CONNECTOR_LVDS:
1293                                 type = DRM_MODE_CONNECTOR_LVDS;
1294                                 break;
1295                         case CONNECTOR_TV:
1296                                 type = DRM_MODE_CONNECTOR_SVIDEO;
1297                                 break;
1298                         default:
1299                                 type = DRM_MODE_CONNECTOR_Unknown;
1300                                 break;
1301                 }
1302
1303                 if (type == DRM_MODE_CONNECTOR_Unknown) {
1304                         DRM_ERROR("DRM_MODE_CONNECTOR_Unknown encountered\n");
1305                         continue;
1306                 }
1307
1308                 /* It should be allowed sometimes, but let's be safe for the moment. */
1309                 drm_connector->interlace_allowed = false;
1310                 drm_connector->doublescan_allowed = false;
1311
1312                 drm_connector_init(dev, drm_connector, &nv50_kms_connector_funcs, type);
1313
1314                 /* Init DVI-I specific properties */
1315                 if (type == DRM_MODE_CONNECTOR_DVII) {
1316                         drm_mode_create_dvi_i_properties(dev);
1317                         drm_connector_attach_property(drm_connector, dev->mode_config.dvi_i_subconnector_property, 0);
1318                         drm_connector_attach_property(drm_connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
1319                 }
1320
1321                 /* If supported in the future, it will have to use the scalers internally and not expose them. */
1322                 if (type != DRM_MODE_CONNECTOR_SVIDEO) {
1323                         drm_connector_attach_property(drm_connector, dev->mode_config.scaling_mode_property, nv50_kms_get_scaling_mode(drm_connector));
1324                 }
1325
1326                 drm_connector_attach_property(drm_connector, dev->mode_config.dithering_mode_property, connector->use_dithering ? DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
1327
1328                 /* attach encoders, possibilities are analog + digital */
1329                 for (i = 0; i < 2; i++) {
1330                         struct drm_encoder *drm_encoder = NULL;
1331                         struct nv50_output *output = connector->to_output(connector, i);
1332                         if (!output)
1333                                 continue;
1334
1335                         drm_encoder = to_nv50_kms_encoder(output);
1336                         if (!drm_encoder) {
1337                                 DRM_ERROR("No struct drm_connector to match struct nv50_output\n");
1338                                 continue;
1339                         }
1340
1341                         drm_mode_connector_attach_encoder(drm_connector, drm_encoder);
1342                 }
1343
1344                 drm_sysfs_connector_add(drm_connector);
1345         }
1346
1347         return 0;
1348 }
1349
1350 /*
1351  * Main functions
1352  */
1353
1354 int nv50_kms_init(struct drm_device *dev)
1355 {
1356         struct drm_nouveau_private *dev_priv = dev->dev_private;
1357         struct nv50_kms_priv *kms_priv = kzalloc(sizeof(struct nv50_kms_priv), GFP_KERNEL);
1358         struct nv50_display *display = NULL;
1359         int rval = 0;
1360
1361         if (!kms_priv)
1362                 return -ENOMEM;
1363
1364         dev_priv->kms_priv = kms_priv;
1365
1366         /* function pointers */
1367         /* an allocation interface that deals with the outside world, without polluting the core. */
1368         dev_priv->alloc_crtc = nv50_kms_alloc_crtc;
1369         dev_priv->alloc_output = nv50_kms_alloc_output;
1370         dev_priv->alloc_connector = nv50_kms_alloc_connector;
1371
1372         dev_priv->free_crtc = nv50_kms_free_crtc;
1373         dev_priv->free_output = nv50_kms_free_output;
1374         dev_priv->free_connector = nv50_kms_free_connector;
1375
1376         /* bios is needed for tables. */
1377         rval = nouveau_parse_bios(dev);
1378         if (rval != 0)
1379                 goto out;
1380
1381         /* init basic kernel modesetting */
1382         drm_mode_config_init(dev);
1383
1384         dev->mode_config.min_width = 0;
1385         dev->mode_config.min_height = 0;
1386
1387         dev->mode_config.funcs = (void *)&nv50_kms_mode_funcs;
1388
1389         dev->mode_config.max_width = 8192;
1390         dev->mode_config.max_height = 8192;
1391
1392         dev->mode_config.fb_base = dev_priv->fb_phys;
1393
1394         /* init kms lists */
1395         INIT_LIST_HEAD(&kms_priv->crtcs);
1396         INIT_LIST_HEAD(&kms_priv->encoders);
1397         INIT_LIST_HEAD(&kms_priv->connectors);
1398
1399         /* init the internal core, must be done first. */
1400         rval = nv50_display_create(dev);
1401         if (rval != 0)
1402                 goto out;
1403
1404         display = nv50_get_display(dev);
1405         if (!display) {
1406                 rval = -EINVAL;
1407                 goto out;
1408         }
1409
1410         /* pre-init now */
1411         rval = display->pre_init(display);
1412         if (rval != 0)
1413                 goto out;
1414
1415         /* init external layer */
1416         rval = nv50_kms_crtcs_init(dev);
1417         if (rval != 0)
1418                 goto out;
1419
1420         rval = nv50_kms_encoders_init(dev);
1421         if (rval != 0)
1422                 goto out;
1423
1424         rval = nv50_kms_connectors_init(dev);
1425         if (rval != 0)
1426                 goto out;
1427
1428         /* init now, this'll kill the textmode */
1429         rval = display->init(display);
1430         if (rval != 0)
1431                 goto out;
1432
1433         /* process cmdbuffer */
1434         display->update(display);
1435
1436         return 0;
1437
1438 out:
1439         kfree(kms_priv);
1440         dev_priv->kms_priv = NULL;
1441
1442         return rval;
1443 }
1444
1445 int nv50_kms_destroy(struct drm_device *dev)
1446 {
1447         drm_mode_config_cleanup(dev);
1448
1449         return 0;
1450 }
1451