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