drivers/gpu/drm/nouveau/nouveau_connector.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 "drmP.h"
  28 #include "drm_edid.h"
  29 #include "drm_crtc_helper.h"
  30 #include "nouveau_reg.h"
  31 #include "nouveau_drv.h"
  32 #include "nouveau_encoder.h"
  33 #include "nouveau_crtc.h"
  34 #include "nouveau_connector.h"
  35 #include "nouveau_hw.h"
  36
  37 static inline struct drm_encoder_slave_funcs *
  38 get_slave_funcs(struct nouveau_encoder *enc)
  39 {
  40         return to_encoder_slave(to_drm_encoder(enc))->slave_funcs;
  41 }
  42
  43 static struct nouveau_encoder *
  44 find_encoder_by_type(struct drm_connector *connector, int type)
  45 {
  46         struct drm_device *dev = connector->dev;
  47         struct nouveau_encoder *nv_encoder;
  48         struct drm_mode_object *obj;
  49         int i, id;
  50
  51         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  52                 id = connector->encoder_ids[i];
  53                 if (!id)
  54                         break;
  55
  56                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  57                 if (!obj)
  58                         continue;
  59                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  60
  61                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  62                         return nv_encoder;
  63         }
  64
  65         return NULL;
  66 }
  67
  68 struct nouveau_connector *
  69 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  70 {
  71         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  72         struct drm_connector *drm_connector;
  73
  74         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  75                 if (drm_connector->encoder == to_drm_encoder(encoder))
  76                         return nouveau_connector(drm_connector);
  77         }
  78
  79         return NULL;
  80 }
  81
  82
  83 static void
  84 nouveau_connector_destroy(struct drm_connector *drm_connector)
  85 {
  86         struct nouveau_connector *nv_connector =
  87                 nouveau_connector(drm_connector);
  88         struct drm_device *dev = nv_connector->base.dev;
  89
  90         NV_DEBUG_KMS(dev, "\n");
  91
  92         if (!nv_connector)
  93                 return;
  94
  95         kfree(nv_connector->edid);
  96         drm_sysfs_connector_remove(drm_connector);
  97         drm_connector_cleanup(drm_connector);
  98         kfree(drm_connector);
  99 }
 100
 101 static void
 102 nouveau_connector_ddc_prepare(struct drm_connector *connector, int *flags)
 103 {
 104         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 105
 106         if (dev_priv->card_type >= NV_50)
 107                 return;
 108
 109         *flags = 0;
 110         if (NVLockVgaCrtcs(dev_priv->dev, false))
 111                 *flags |= 1;
 112         if (nv_heads_tied(dev_priv->dev))
 113                 *flags |= 2;
 114
 115         if (*flags & 2)
 116                 NVSetOwner(dev_priv->dev, 0); /* necessary? */
 117 }
 118
 119 static void
 120 nouveau_connector_ddc_finish(struct drm_connector *connector, int flags)
 121 {
 122         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 123
 124         if (dev_priv->card_type >= NV_50)
 125                 return;
 126
 127         if (flags & 2)
 128                 NVSetOwner(dev_priv->dev, 4);
 129         if (flags & 1)
 130                 NVLockVgaCrtcs(dev_priv->dev, true);
 131 }
 132
 133 static struct nouveau_i2c_chan *
 134 nouveau_connector_ddc_detect(struct drm_connector *connector,
 135                              struct nouveau_encoder **pnv_encoder)
 136 {
 137         struct drm_device *dev = connector->dev;
 138         uint8_t out_buf[] = { 0x0, 0x0}, buf[2];
 139         int ret, flags, i;
 140
 141         struct i2c_msg msgs[] = {
 142                 {
 143                         .addr = 0x50,
 144                         .flags = 0,
 145                         .len = 1,
 146                         .buf = out_buf,
 147                 },
 148                 {
 149                         .addr = 0x50,
 150                         .flags = I2C_M_RD,
 151                         .len = 1,
 152                         .buf = buf,
 153                 }
 154         };
 155
 156         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 157                 struct nouveau_i2c_chan *i2c = NULL;
 158                 struct nouveau_encoder *nv_encoder;
 159                 struct drm_mode_object *obj;
 160                 int id;
 161
 162                 id = connector->encoder_ids[i];
 163                 if (!id)
 164                         break;
 165
 166                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 167                 if (!obj)
 168                         continue;
 169                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 170
 171                 if (nv_encoder->dcb->i2c_index < 0xf)
 172                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 173                 if (!i2c)
 174                         continue;
 175
 176                 nouveau_connector_ddc_prepare(connector, &flags);
 177                 ret = i2c_transfer(&i2c->adapter, msgs, 2);
 178                 nouveau_connector_ddc_finish(connector, flags);
 179
 180                 if (ret == 2) {
 181                         *pnv_encoder = nv_encoder;
 182                         return i2c;
 183                 }
 184         }
 185
 186         return NULL;
 187 }
 188
 189 static void
 190 nouveau_connector_set_encoder(struct drm_connector *connector,
 191                               struct nouveau_encoder *nv_encoder)
 192 {
 193         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 194         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 195         struct drm_device *dev = connector->dev;
 196
 197         if (nv_connector->detected_encoder == nv_encoder)
 198                 return;
 199         nv_connector->detected_encoder = nv_encoder;
 200
 201         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 202             nv_encoder->dcb->type == OUTPUT_TMDS) {
 203                 connector->doublescan_allowed = false;
 204                 connector->interlace_allowed = false;
 205         } else {
 206                 connector->doublescan_allowed = true;
 207                 if (dev_priv->card_type == NV_20 ||
 208                    (dev_priv->card_type == NV_10 &&
 209                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 210                     (dev->pci_device & 0x0ff0) != 0x0150))
 211                         /* HW is broken */
 212                         connector->interlace_allowed = false;
 213                 else
 214                         connector->interlace_allowed = true;
 215         }
 216
 217         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 218                 drm_connector_property_set_value(connector,
 219                         dev->mode_config.dvi_i_subconnector_property,
 220                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 221                         DRM_MODE_SUBCONNECTOR_DVID :
 222                         DRM_MODE_SUBCONNECTOR_DVIA);
 223         }
 224 }
 225
 226 static enum drm_connector_status
 227 nouveau_connector_detect(struct drm_connector *connector)
 228 {
 229         struct drm_device *dev = connector->dev;
 230         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 231         struct nouveau_encoder *nv_encoder = NULL;
 232         struct nouveau_i2c_chan *i2c;
 233         int type, flags;
 234
 235         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 236                 nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 237         if (nv_encoder && nv_connector->native_mode) {
 238                 nouveau_connector_set_encoder(connector, nv_encoder);
 239                 return connector_status_connected;
 240         }
 241
 242         kfree(nv_connector->edid);
 243         nv_connector->edid = NULL;
 244
 245         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 246         if (i2c) {
 247                 nouveau_connector_ddc_prepare(connector, &flags);
 248                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 249                 nouveau_connector_ddc_finish(connector, flags);
 250                 drm_mode_connector_update_edid_property(connector,
 251                                                         nv_connector->edid);
 252                 if (!nv_connector->edid) {
 253                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 254                                  drm_get_connector_name(connector));
 255                         return connector_status_disconnected;
 256                 }
 257
 258                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 259                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 260                         NV_ERROR(dev, "Detected %s, but failed init\n",
 261                                  drm_get_connector_name(connector));
 262                         return connector_status_disconnected;
 263                 }
 264
 265                 /* Override encoder type for DVI-I based on whether EDID
 266                  * says the display is digital or analog, both use the
 267                  * same i2c channel so the value returned from ddc_detect
 268                  * isn't necessarily correct.
 269                  */
 270                 if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 271                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 272                                 type = OUTPUT_TMDS;
 273                         else
 274                                 type = OUTPUT_ANALOG;
 275
 276                         nv_encoder = find_encoder_by_type(connector, type);
 277                         if (!nv_encoder) {
 278                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 279                                               "but no object!\n", type,
 280                                          drm_get_connector_name(connector));
 281                                 return connector_status_disconnected;
 282                         }
 283                 }
 284
 285                 nouveau_connector_set_encoder(connector, nv_encoder);
 286                 return connector_status_connected;
 287         }
 288
 289         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 290         if (!nv_encoder)
 291                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 292         if (nv_encoder) {
 293                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 294                 struct drm_encoder_helper_funcs *helper =
 295                                                 encoder->helper_private;
 296
 297                 if (helper->detect(encoder, connector) ==
 298                                                 connector_status_connected) {
 299                         nouveau_connector_set_encoder(connector, nv_encoder);
 300                         return connector_status_connected;
 301                 }
 302
 303         }
 304
 305         return connector_status_disconnected;
 306 }
 307
 308 static void
 309 nouveau_connector_force(struct drm_connector *connector)
 310 {
 311         struct drm_device *dev = connector->dev;
 312         struct nouveau_encoder *nv_encoder;
 313         int type;
 314
 315         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 316                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 317                         type = OUTPUT_TMDS;
 318                 else
 319                         type = OUTPUT_ANALOG;
 320         } else
 321                 type = OUTPUT_ANY;
 322
 323         nv_encoder = find_encoder_by_type(connector, type);
 324         if (!nv_encoder) {
 325                 NV_ERROR(dev, "can't find encoder to force %s on!\n",
 326                          drm_get_connector_name(connector));
 327                 connector->status = connector_status_disconnected;
 328                 return;
 329         }
 330
 331         nouveau_connector_set_encoder(connector, nv_encoder);
 332 }
 333
 334 static int
 335 nouveau_connector_set_property(struct drm_connector *connector,
 336                                struct drm_property *property, uint64_t value)
 337 {
 338         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 339         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 340         struct drm_device *dev = connector->dev;
 341         int ret;
 342
 343         /* Scaling mode */
 344         if (property == dev->mode_config.scaling_mode_property) {
 345                 struct nouveau_crtc *nv_crtc = NULL;
 346                 bool modeset = false;
 347
 348                 switch (value) {
 349                 case DRM_MODE_SCALE_NONE:
 350                 case DRM_MODE_SCALE_FULLSCREEN:
 351                 case DRM_MODE_SCALE_CENTER:
 352                 case DRM_MODE_SCALE_ASPECT:
 353                         break;
 354                 default:
 355                         return -EINVAL;
 356                 }
 357
 358                 /* LVDS always needs gpu scaling */
 359                 if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS &&
 360                     value == DRM_MODE_SCALE_NONE)
 361                         return -EINVAL;
 362
 363                 /* Changing between GPU and panel scaling requires a full
 364                  * modeset
 365                  */
 366                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 367                     (value == DRM_MODE_SCALE_NONE))
 368                         modeset = true;
 369                 nv_connector->scaling_mode = value;
 370
 371                 if (connector->encoder && connector->encoder->crtc)
 372                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 373                 if (!nv_crtc)
 374                         return 0;
 375
 376                 if (modeset || !nv_crtc->set_scale) {
 377                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 378                                                         &nv_crtc->base.mode,
 379                                                         nv_crtc->base.x,
 380                                                         nv_crtc->base.y, NULL);
 381                         if (!ret)
 382                                 return -EINVAL;
 383                 } else {
 384                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 385                         if (ret)
 386                                 return ret;
 387                 }
 388
 389                 return 0;
 390         }
 391
 392         /* Dithering */
 393         if (property == dev->mode_config.dithering_mode_property) {
 394                 struct nouveau_crtc *nv_crtc = NULL;
 395
 396                 if (value == DRM_MODE_DITHERING_ON)
 397                         nv_connector->use_dithering = true;
 398                 else
 399                         nv_connector->use_dithering = false;
 400
 401                 if (connector->encoder && connector->encoder->crtc)
 402                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 403
 404                 if (!nv_crtc || !nv_crtc->set_dither)
 405                         return 0;
 406
 407                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 408                                            true);
 409         }
 410
 411         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 412                 return get_slave_funcs(nv_encoder)->
 413                         set_property(to_drm_encoder(nv_encoder), connector, property, value);
 414
 415         return -EINVAL;
 416 }
 417
 418 static struct drm_display_mode *
 419 nouveau_connector_native_mode(struct nouveau_connector *connector)
 420 {
 421         struct drm_device *dev = connector->base.dev;
 422         struct drm_display_mode *mode, *largest = NULL;
 423         int high_w = 0, high_h = 0, high_v = 0;
 424
 425         /* Use preferred mode if there is one.. */
 426         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 427                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 428                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 429                         return drm_mode_duplicate(dev, mode);
 430                 }
 431         }
 432
 433         /* Otherwise, take the resolution with the largest width, then height,
 434          * then vertical refresh
 435          */
 436         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 437                 if (mode->hdisplay < high_w)
 438                         continue;
 439
 440                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 441                         continue;
 442
 443                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 444                     mode->vrefresh < high_v)
 445                         continue;
 446
 447                 high_w = mode->hdisplay;
 448                 high_h = mode->vdisplay;
 449                 high_v = mode->vrefresh;
 450                 largest = mode;
 451         }
 452
 453         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 454                       high_w, high_h, high_v);
 455         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 456 }
 457
 458 struct moderec {
 459         int hdisplay;
 460         int vdisplay;
 461 };
 462
 463 static struct moderec scaler_modes[] = {
 464         { 1920, 1200 },
 465         { 1920, 1080 },
 466         { 1680, 1050 },
 467         { 1600, 1200 },
 468         { 1400, 1050 },
 469         { 1280, 1024 },
 470         { 1280, 960 },
 471         { 1152, 864 },
 472         { 1024, 768 },
 473         { 800, 600 },
 474         { 720, 400 },
 475         { 640, 480 },
 476         { 640, 400 },
 477         { 640, 350 },
 478         {}
 479 };
 480
 481 static int
 482 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 483 {
 484         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 485         struct drm_display_mode *native = nv_connector->native_mode, *m;
 486         struct drm_device *dev = connector->dev;
 487         struct moderec *mode = &scaler_modes[0];
 488         int modes = 0;
 489
 490         if (!native)
 491                 return 0;
 492
 493         while (mode->hdisplay) {
 494                 if (mode->hdisplay <= native->hdisplay &&
 495                     mode->vdisplay <= native->vdisplay) {
 496                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 497                                          drm_mode_vrefresh(native), false,
 498                                          false, false);
 499                         if (!m)
 500                                 continue;
 501
 502                         m->type |= DRM_MODE_TYPE_DRIVER;
 503
 504                         drm_mode_probed_add(connector, m);
 505                         modes++;
 506                 }
 507
 508                 mode++;
 509         }
 510
 511         return modes;
 512 }
 513
 514 static int
 515 nouveau_connector_get_modes(struct drm_connector *connector)
 516 {
 517         struct drm_device *dev = connector->dev;
 518         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 519         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 520         int ret = 0;
 521
 522         /* If we're not LVDS, destroy the previous native mode, the attached
 523          * monitor could have changed.
 524          */
 525         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
 526             nv_connector->native_mode) {
 527                 drm_mode_destroy(dev, nv_connector->native_mode);
 528                 nv_connector->native_mode = NULL;
 529         }
 530
 531         if (nv_connector->edid)
 532                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 533
 534         /* Find the native mode if this is a digital panel, if we didn't
 535          * find any modes through DDC previously add the native mode to
 536          * the list of modes.
 537          */
 538         if (!nv_connector->native_mode)
 539                 nv_connector->native_mode =
 540                         nouveau_connector_native_mode(nv_connector);
 541         if (ret == 0 && nv_connector->native_mode) {
 542                 struct drm_display_mode *mode;
 543
 544                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 545                 drm_mode_probed_add(connector, mode);
 546                 ret = 1;
 547         }
 548
 549         if (nv_encoder->dcb->type == OUTPUT_TV)
 550                 ret = get_slave_funcs(nv_encoder)->
 551                         get_modes(to_drm_encoder(nv_encoder), connector);
 552
 553         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 554                 ret += nouveau_connector_scaler_modes_add(connector);
 555
 556         return ret;
 557 }
 558
 559 static int
 560 nouveau_connector_mode_valid(struct drm_connector *connector,
 561                              struct drm_display_mode *mode)
 562 {
 563         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 564         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 565         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 566         unsigned min_clock = 25000, max_clock = min_clock;
 567         unsigned clock = mode->clock;
 568
 569         switch (nv_encoder->dcb->type) {
 570         case OUTPUT_LVDS:
 571                 BUG_ON(!nv_connector->native_mode);
 572                 if (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 573                     mode->vdisplay > nv_connector->native_mode->vdisplay)
 574                         return MODE_PANEL;
 575
 576                 min_clock = 0;
 577                 max_clock = 400000;
 578                 break;
 579         case OUTPUT_TMDS:
 580                 if ((dev_priv->card_type >= NV_50 && !nouveau_duallink) ||
 581                     (dev_priv->card_type < NV_50 &&
 582                      !nv_encoder->dcb->duallink_possible))
 583                         max_clock = 165000;
 584                 else
 585                         max_clock = 330000;
 586                 break;
 587         case OUTPUT_ANALOG:
 588                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 589                 if (!max_clock)
 590                         max_clock = 350000;
 591                 break;
 592         case OUTPUT_TV:
 593                 return get_slave_funcs(nv_encoder)->
 594                         mode_valid(to_drm_encoder(nv_encoder), mode);
 595         case OUTPUT_DP:
 596                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 597                         max_clock = nv_encoder->dp.link_nr * 270000;
 598                 else
 599                         max_clock = nv_encoder->dp.link_nr * 162000;
 600
 601                 clock *= 3;
 602                 break;
 603         }
 604
 605         if (clock < min_clock)
 606                 return MODE_CLOCK_LOW;
 607
 608         if (clock > max_clock)
 609                 return MODE_CLOCK_HIGH;
 610
 611         return MODE_OK;
 612 }
 613
 614 static struct drm_encoder *
 615 nouveau_connector_best_encoder(struct drm_connector *connector)
 616 {
 617         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 618
 619         if (nv_connector->detected_encoder)
 620                 return to_drm_encoder(nv_connector->detected_encoder);
 621
 622         return NULL;
 623 }
 624
 625 static const struct drm_connector_helper_funcs
 626 nouveau_connector_helper_funcs = {
 627         .get_modes = nouveau_connector_get_modes,
 628         .mode_valid = nouveau_connector_mode_valid,
 629         .best_encoder = nouveau_connector_best_encoder,
 630 };
 631
 632 static const struct drm_connector_funcs
 633 nouveau_connector_funcs = {
 634         .dpms = drm_helper_connector_dpms,
 635         .save = NULL,
 636         .restore = NULL,
 637         .detect = nouveau_connector_detect,
 638         .destroy = nouveau_connector_destroy,
 639         .fill_modes = drm_helper_probe_single_connector_modes,
 640         .set_property = nouveau_connector_set_property,
 641         .force = nouveau_connector_force
 642 };
 643
 644 static int
 645 nouveau_connector_create_lvds(struct drm_device *dev,
 646                               struct drm_connector *connector)
 647 {
 648         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 649         struct drm_nouveau_private *dev_priv = dev->dev_private;
 650         struct nouveau_i2c_chan *i2c = NULL;
 651         struct nouveau_encoder *nv_encoder;
 652         struct drm_display_mode native, *mode, *temp;
 653         bool dummy, if_is_24bit = false;
 654         int ret, flags;
 655
 656         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 657         if (!nv_encoder)
 658                 return -ENODEV;
 659
 660         ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &if_is_24bit);
 661         if (ret) {
 662                 NV_ERROR(dev, "Error parsing LVDS table, disabling LVDS\n");
 663                 return ret;
 664         }
 665         nv_connector->use_dithering = !if_is_24bit;
 666
 667         /* Firstly try getting EDID over DDC, if allowed and I2C channel
 668          * is available.
 669          */
 670         if (!dev_priv->VBIOS.pub.fp_no_ddc && nv_encoder->dcb->i2c_index < 0xf)
 671                 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 672
 673         if (i2c) {
 674                 nouveau_connector_ddc_prepare(connector, &flags);
 675                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 676                 nouveau_connector_ddc_finish(connector, flags);
 677         }
 678
 679         /* If no EDID found above, and the VBIOS indicates a hardcoded
 680          * modeline is avalilable for the panel, set it as the panel's
 681          * native mode and exit.
 682          */
 683         if (!nv_connector->edid && nouveau_bios_fp_mode(dev, &native) &&
 684              (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 685               dev_priv->VBIOS.pub.fp_no_ddc)) {
 686                 nv_connector->native_mode = drm_mode_duplicate(dev, &native);
 687                 goto out;
 688         }
 689
 690         /* Still nothing, some VBIOS images have a hardcoded EDID block
 691          * stored for the panel stored in them.
 692          */
 693         if (!nv_connector->edid && !nv_connector->native_mode &&
 694             !dev_priv->VBIOS.pub.fp_no_ddc) {
 695                 struct edid *edid =
 696                         (struct edid *)nouveau_bios_embedded_edid(dev);
 697                 if (edid) {
 698                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 699                         *(nv_connector->edid) = *edid;
 700                 }
 701         }
 702
 703         if (!nv_connector->edid)
 704                 goto out;
 705
 706         /* We didn't find/use a panel mode from the VBIOS, so parse the EDID
 707          * block and look for the preferred mode there.
 708          */
 709         ret = drm_add_edid_modes(connector, nv_connector->edid);
 710         if (ret == 0)
 711                 goto out;
 712         nv_connector->detected_encoder = nv_encoder;
 713         nv_connector->native_mode = nouveau_connector_native_mode(nv_connector);
 714         list_for_each_entry_safe(mode, temp, &connector->probed_modes, head)
 715                 drm_mode_remove(connector, mode);
 716
 717 out:
 718         if (!nv_connector->native_mode) {
 719                 NV_ERROR(dev, "LVDS present in DCB table, but couldn't "
 720                               "determine its native mode.  Disabling.\n");
 721                 return -ENODEV;
 722         }
 723
 724         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 725         return 0;
 726 }
 727
 728 int
 729 nouveau_connector_create(struct drm_device *dev, int index, int type)
 730 {
 731         struct drm_nouveau_private *dev_priv = dev->dev_private;
 732         struct nouveau_connector *nv_connector = NULL;
 733         struct drm_connector *connector;
 734         struct drm_encoder *encoder;
 735         int ret;
 736
 737         NV_DEBUG_KMS(dev, "\n");
 738
 739         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 740         if (!nv_connector)
 741                 return -ENOMEM;
 742         nv_connector->dcb = nouveau_bios_connector_entry(dev, index);
 743         connector = &nv_connector->base;
 744
 745         switch (type) {
 746         case DRM_MODE_CONNECTOR_VGA:
 747                 NV_INFO(dev, "Detected a VGA connector\n");
 748                 break;
 749         case DRM_MODE_CONNECTOR_DVID:
 750                 NV_INFO(dev, "Detected a DVI-D connector\n");
 751                 break;
 752         case DRM_MODE_CONNECTOR_DVII:
 753                 NV_INFO(dev, "Detected a DVI-I connector\n");
 754                 break;
 755         case DRM_MODE_CONNECTOR_LVDS:
 756                 NV_INFO(dev, "Detected a LVDS connector\n");
 757                 break;
 758         case DRM_MODE_CONNECTOR_TV:
 759                 NV_INFO(dev, "Detected a TV connector\n");
 760                 break;
 761         case DRM_MODE_CONNECTOR_DisplayPort:
 762                 NV_INFO(dev, "Detected a DisplayPort connector\n");
 763                 break;
 764         default:
 765                 NV_ERROR(dev, "Unknown connector, this is not good.\n");
 766                 break;
 767         }
 768
 769         /* defaults, will get overridden in detect() */
 770         connector->interlace_allowed = false;
 771         connector->doublescan_allowed = false;
 772
 773         drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
 774         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 775
 776         /* Init DVI-I specific properties */
 777         if (type == DRM_MODE_CONNECTOR_DVII) {
 778                 drm_mode_create_dvi_i_properties(dev);
 779                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 780                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 781         }
 782
 783         if (type != DRM_MODE_CONNECTOR_LVDS)
 784                 nv_connector->use_dithering = false;
 785
 786         if (type == DRM_MODE_CONNECTOR_DVID ||
 787             type == DRM_MODE_CONNECTOR_DVII ||
 788             type == DRM_MODE_CONNECTOR_LVDS ||
 789             type == DRM_MODE_CONNECTOR_DisplayPort) {
 790                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 791
 792                 drm_connector_attach_property(connector, dev->mode_config.scaling_mode_property,
 793                                               nv_connector->scaling_mode);
 794                 drm_connector_attach_property(connector, dev->mode_config.dithering_mode_property,
 795                                               nv_connector->use_dithering ? DRM_MODE_DITHERING_ON
 796                                               : DRM_MODE_DITHERING_OFF);
 797
 798         } else {
 799                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 800
 801                 if (type == DRM_MODE_CONNECTOR_VGA  &&
 802                                 dev_priv->card_type >= NV_50) {
 803                         drm_connector_attach_property(connector,
 804                                         dev->mode_config.scaling_mode_property,
 805                                         nv_connector->scaling_mode);
 806                 }
 807         }
 808
 809         /* attach encoders */
 810         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 811                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 812
 813                 if (nv_encoder->dcb->connector != index)
 814                         continue;
 815
 816                 if (get_slave_funcs(nv_encoder))
 817                         get_slave_funcs(nv_encoder)->create_resources(encoder, connector);
 818
 819                 drm_mode_connector_attach_encoder(connector, encoder);
 820         }
 821
 822         drm_sysfs_connector_add(connector);
 823
 824         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS) {
 825                 ret = nouveau_connector_create_lvds(dev, connector);
 826                 if (ret) {
 827                         connector->funcs->destroy(connector);
 828                         return ret;
 829                 }
 830         }
 831
 832         return 0;
 833 }