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 <acpi/button.h>
  28
  29 #include "drmP.h"
  30 #include "drm_edid.h"
  31 #include "drm_crtc_helper.h"
  32
  33 #include "nouveau_reg.h"
  34 #include "nouveau_drv.h"
  35 #include "nouveau_encoder.h"
  36 #include "nouveau_crtc.h"
  37 #include "nouveau_connector.h"
  38 #include "nouveau_hw.h"
  39
  40 static inline struct drm_encoder_slave_funcs *
  41 get_slave_funcs(struct nouveau_encoder *enc)
  42 {
  43         return to_encoder_slave(to_drm_encoder(enc))->slave_funcs;
  44 }
  45
  46 static struct nouveau_encoder *
  47 find_encoder_by_type(struct drm_connector *connector, int type)
  48 {
  49         struct drm_device *dev = connector->dev;
  50         struct nouveau_encoder *nv_encoder;
  51         struct drm_mode_object *obj;
  52         int i, id;
  53
  54         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  55                 id = connector->encoder_ids[i];
  56                 if (!id)
  57                         break;
  58
  59                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  60                 if (!obj)
  61                         continue;
  62                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  63
  64                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  65                         return nv_encoder;
  66         }
  67
  68         return NULL;
  69 }
  70
  71 struct nouveau_connector *
  72 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  73 {
  74         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  75         struct drm_connector *drm_connector;
  76
  77         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  78                 if (drm_connector->encoder == to_drm_encoder(encoder))
  79                         return nouveau_connector(drm_connector);
  80         }
  81
  82         return NULL;
  83 }
  84
  85
  86 static void
  87 nouveau_connector_destroy(struct drm_connector *drm_connector)
  88 {
  89         struct nouveau_connector *nv_connector =
  90                 nouveau_connector(drm_connector);
  91         struct drm_device *dev;
  92
  93         if (!nv_connector)
  94                 return;
  95
  96         dev = nv_connector->base.dev;
  97         NV_DEBUG_KMS(dev, "\n");
  98
  99         kfree(nv_connector->edid);
 100         drm_sysfs_connector_remove(drm_connector);
 101         drm_connector_cleanup(drm_connector);
 102         kfree(drm_connector);
 103 }
 104
 105 static void
 106 nouveau_connector_ddc_prepare(struct drm_connector *connector, int *flags)
 107 {
 108         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 109
 110         if (dev_priv->card_type >= NV_50)
 111                 return;
 112
 113         *flags = 0;
 114         if (NVLockVgaCrtcs(dev_priv->dev, false))
 115                 *flags |= 1;
 116         if (nv_heads_tied(dev_priv->dev))
 117                 *flags |= 2;
 118
 119         if (*flags & 2)
 120                 NVSetOwner(dev_priv->dev, 0); /* necessary? */
 121 }
 122
 123 static void
 124 nouveau_connector_ddc_finish(struct drm_connector *connector, int flags)
 125 {
 126         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 127
 128         if (dev_priv->card_type >= NV_50)
 129                 return;
 130
 131         if (flags & 2)
 132                 NVSetOwner(dev_priv->dev, 4);
 133         if (flags & 1)
 134                 NVLockVgaCrtcs(dev_priv->dev, true);
 135 }
 136
 137 static struct nouveau_i2c_chan *
 138 nouveau_connector_ddc_detect(struct drm_connector *connector,
 139                              struct nouveau_encoder **pnv_encoder)
 140 {
 141         struct drm_device *dev = connector->dev;
 142         uint8_t out_buf[] = { 0x0, 0x0}, buf[2];
 143         int ret, flags, i;
 144
 145         struct i2c_msg msgs[] = {
 146                 {
 147                         .addr = 0x50,
 148                         .flags = 0,
 149                         .len = 1,
 150                         .buf = out_buf,
 151                 },
 152                 {
 153                         .addr = 0x50,
 154                         .flags = I2C_M_RD,
 155                         .len = 1,
 156                         .buf = buf,
 157                 }
 158         };
 159
 160         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 161                 struct nouveau_i2c_chan *i2c = NULL;
 162                 struct nouveau_encoder *nv_encoder;
 163                 struct drm_mode_object *obj;
 164                 int id;
 165
 166                 id = connector->encoder_ids[i];
 167                 if (!id)
 168                         break;
 169
 170                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 171                 if (!obj)
 172                         continue;
 173                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 174
 175                 if (nv_encoder->dcb->i2c_index < 0xf)
 176                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 177                 if (!i2c)
 178                         continue;
 179
 180                 nouveau_connector_ddc_prepare(connector, &flags);
 181                 ret = i2c_transfer(&i2c->adapter, msgs, 2);
 182                 nouveau_connector_ddc_finish(connector, flags);
 183
 184                 if (ret == 2) {
 185                         *pnv_encoder = nv_encoder;
 186                         return i2c;
 187                 }
 188         }
 189
 190         return NULL;
 191 }
 192
 193 static void
 194 nouveau_connector_set_encoder(struct drm_connector *connector,
 195                               struct nouveau_encoder *nv_encoder)
 196 {
 197         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 198         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 199         struct drm_device *dev = connector->dev;
 200
 201         if (nv_connector->detected_encoder == nv_encoder)
 202                 return;
 203         nv_connector->detected_encoder = nv_encoder;
 204
 205         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 206             nv_encoder->dcb->type == OUTPUT_TMDS) {
 207                 connector->doublescan_allowed = false;
 208                 connector->interlace_allowed = false;
 209         } else {
 210                 connector->doublescan_allowed = true;
 211                 if (dev_priv->card_type == NV_20 ||
 212                    (dev_priv->card_type == NV_10 &&
 213                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 214                     (dev->pci_device & 0x0ff0) != 0x0150))
 215                         /* HW is broken */
 216                         connector->interlace_allowed = false;
 217                 else
 218                         connector->interlace_allowed = true;
 219         }
 220
 221         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 222                 drm_connector_property_set_value(connector,
 223                         dev->mode_config.dvi_i_subconnector_property,
 224                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 225                         DRM_MODE_SUBCONNECTOR_DVID :
 226                         DRM_MODE_SUBCONNECTOR_DVIA);
 227         }
 228 }
 229
 230 static enum drm_connector_status
 231 nouveau_connector_detect(struct drm_connector *connector)
 232 {
 233         struct drm_device *dev = connector->dev;
 234         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 235         struct nouveau_encoder *nv_encoder = NULL;
 236         struct nouveau_i2c_chan *i2c;
 237         int type, flags;
 238
 239         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 240                 nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 241         if (nv_encoder && nv_connector->native_mode) {
 242 #ifdef CONFIG_ACPI
 243                 if (!nouveau_ignorelid && !acpi_lid_open())
 244                         return connector_status_disconnected;
 245 #endif
 246                 nouveau_connector_set_encoder(connector, nv_encoder);
 247                 return connector_status_connected;
 248         }
 249
 250         /* Cleanup the previous EDID block. */
 251         if (nv_connector->edid) {
 252                 drm_mode_connector_update_edid_property(connector, NULL);
 253                 kfree(nv_connector->edid);
 254                 nv_connector->edid = NULL;
 255         }
 256
 257         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 258         if (i2c) {
 259                 nouveau_connector_ddc_prepare(connector, &flags);
 260                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 261                 nouveau_connector_ddc_finish(connector, flags);
 262                 drm_mode_connector_update_edid_property(connector,
 263                                                         nv_connector->edid);
 264                 if (!nv_connector->edid) {
 265                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 266                                  drm_get_connector_name(connector));
 267                         goto detect_analog;
 268                 }
 269
 270                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 271                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 272                         NV_ERROR(dev, "Detected %s, but failed init\n",
 273                                  drm_get_connector_name(connector));
 274                         return connector_status_disconnected;
 275                 }
 276
 277                 /* Override encoder type for DVI-I based on whether EDID
 278                  * says the display is digital or analog, both use the
 279                  * same i2c channel so the value returned from ddc_detect
 280                  * isn't necessarily correct.
 281                  */
 282                 if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 283                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 284                                 type = OUTPUT_TMDS;
 285                         else
 286                                 type = OUTPUT_ANALOG;
 287
 288                         nv_encoder = find_encoder_by_type(connector, type);
 289                         if (!nv_encoder) {
 290                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 291                                               "but no object!\n", type,
 292                                          drm_get_connector_name(connector));
 293                                 return connector_status_disconnected;
 294                         }
 295                 }
 296
 297                 nouveau_connector_set_encoder(connector, nv_encoder);
 298                 return connector_status_connected;
 299         }
 300
 301 detect_analog:
 302         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 303         if (!nv_encoder)
 304                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 305         if (nv_encoder) {
 306                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 307                 struct drm_encoder_helper_funcs *helper =
 308                                                 encoder->helper_private;
 309
 310                 if (helper->detect(encoder, connector) ==
 311                                                 connector_status_connected) {
 312                         nouveau_connector_set_encoder(connector, nv_encoder);
 313                         return connector_status_connected;
 314                 }
 315
 316         }
 317
 318         return connector_status_disconnected;
 319 }
 320
 321 static void
 322 nouveau_connector_force(struct drm_connector *connector)
 323 {
 324         struct drm_device *dev = connector->dev;
 325         struct nouveau_encoder *nv_encoder;
 326         int type;
 327
 328         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 329                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 330                         type = OUTPUT_TMDS;
 331                 else
 332                         type = OUTPUT_ANALOG;
 333         } else
 334                 type = OUTPUT_ANY;
 335
 336         nv_encoder = find_encoder_by_type(connector, type);
 337         if (!nv_encoder) {
 338                 NV_ERROR(dev, "can't find encoder to force %s on!\n",
 339                          drm_get_connector_name(connector));
 340                 connector->status = connector_status_disconnected;
 341                 return;
 342         }
 343
 344         nouveau_connector_set_encoder(connector, nv_encoder);
 345 }
 346
 347 static int
 348 nouveau_connector_set_property(struct drm_connector *connector,
 349                                struct drm_property *property, uint64_t value)
 350 {
 351         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 352         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 353         struct drm_device *dev = connector->dev;
 354         int ret;
 355
 356         /* Scaling mode */
 357         if (property == dev->mode_config.scaling_mode_property) {
 358                 struct nouveau_crtc *nv_crtc = NULL;
 359                 bool modeset = false;
 360
 361                 switch (value) {
 362                 case DRM_MODE_SCALE_NONE:
 363                 case DRM_MODE_SCALE_FULLSCREEN:
 364                 case DRM_MODE_SCALE_CENTER:
 365                 case DRM_MODE_SCALE_ASPECT:
 366                         break;
 367                 default:
 368                         return -EINVAL;
 369                 }
 370
 371                 /* LVDS always needs gpu scaling */
 372                 if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS &&
 373                     value == DRM_MODE_SCALE_NONE)
 374                         return -EINVAL;
 375
 376                 /* Changing between GPU and panel scaling requires a full
 377                  * modeset
 378                  */
 379                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 380                     (value == DRM_MODE_SCALE_NONE))
 381                         modeset = true;
 382                 nv_connector->scaling_mode = value;
 383
 384                 if (connector->encoder && connector->encoder->crtc)
 385                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 386                 if (!nv_crtc)
 387                         return 0;
 388
 389                 if (modeset || !nv_crtc->set_scale) {
 390                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 391                                                         &nv_crtc->base.mode,
 392                                                         nv_crtc->base.x,
 393                                                         nv_crtc->base.y, NULL);
 394                         if (!ret)
 395                                 return -EINVAL;
 396                 } else {
 397                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 398                         if (ret)
 399                                 return ret;
 400                 }
 401
 402                 return 0;
 403         }
 404
 405         /* Dithering */
 406         if (property == dev->mode_config.dithering_mode_property) {
 407                 struct nouveau_crtc *nv_crtc = NULL;
 408
 409                 if (value == DRM_MODE_DITHERING_ON)
 410                         nv_connector->use_dithering = true;
 411                 else
 412                         nv_connector->use_dithering = false;
 413
 414                 if (connector->encoder && connector->encoder->crtc)
 415                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 416
 417                 if (!nv_crtc || !nv_crtc->set_dither)
 418                         return 0;
 419
 420                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 421                                            true);
 422         }
 423
 424         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 425                 return get_slave_funcs(nv_encoder)->
 426                         set_property(to_drm_encoder(nv_encoder), connector, property, value);
 427
 428         return -EINVAL;
 429 }
 430
 431 static struct drm_display_mode *
 432 nouveau_connector_native_mode(struct nouveau_connector *connector)
 433 {
 434         struct drm_device *dev = connector->base.dev;
 435         struct drm_display_mode *mode, *largest = NULL;
 436         int high_w = 0, high_h = 0, high_v = 0;
 437
 438         /* Use preferred mode if there is one.. */
 439         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 440                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 441                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 442                         return drm_mode_duplicate(dev, mode);
 443                 }
 444         }
 445
 446         /* Otherwise, take the resolution with the largest width, then height,
 447          * then vertical refresh
 448          */
 449         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 450                 if (mode->hdisplay < high_w)
 451                         continue;
 452
 453                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 454                         continue;
 455
 456                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 457                     mode->vrefresh < high_v)
 458                         continue;
 459
 460                 high_w = mode->hdisplay;
 461                 high_h = mode->vdisplay;
 462                 high_v = mode->vrefresh;
 463                 largest = mode;
 464         }
 465
 466         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 467                       high_w, high_h, high_v);
 468         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 469 }
 470
 471 struct moderec {
 472         int hdisplay;
 473         int vdisplay;
 474 };
 475
 476 static struct moderec scaler_modes[] = {
 477         { 1920, 1200 },
 478         { 1920, 1080 },
 479         { 1680, 1050 },
 480         { 1600, 1200 },
 481         { 1400, 1050 },
 482         { 1280, 1024 },
 483         { 1280, 960 },
 484         { 1152, 864 },
 485         { 1024, 768 },
 486         { 800, 600 },
 487         { 720, 400 },
 488         { 640, 480 },
 489         { 640, 400 },
 490         { 640, 350 },
 491         {}
 492 };
 493
 494 static int
 495 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 496 {
 497         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 498         struct drm_display_mode *native = nv_connector->native_mode, *m;
 499         struct drm_device *dev = connector->dev;
 500         struct moderec *mode = &scaler_modes[0];
 501         int modes = 0;
 502
 503         if (!native)
 504                 return 0;
 505
 506         while (mode->hdisplay) {
 507                 if (mode->hdisplay <= native->hdisplay &&
 508                     mode->vdisplay <= native->vdisplay) {
 509                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 510                                          drm_mode_vrefresh(native), false,
 511                                          false, false);
 512                         if (!m)
 513                                 continue;
 514
 515                         m->type |= DRM_MODE_TYPE_DRIVER;
 516
 517                         drm_mode_probed_add(connector, m);
 518                         modes++;
 519                 }
 520
 521                 mode++;
 522         }
 523
 524         return modes;
 525 }
 526
 527 static int
 528 nouveau_connector_get_modes(struct drm_connector *connector)
 529 {
 530         struct drm_device *dev = connector->dev;
 531         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 532         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 533         int ret = 0;
 534
 535         /* If we're not LVDS, destroy the previous native mode, the attached
 536          * monitor could have changed.
 537          */
 538         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
 539             nv_connector->native_mode) {
 540                 drm_mode_destroy(dev, nv_connector->native_mode);
 541                 nv_connector->native_mode = NULL;
 542         }
 543
 544         if (nv_connector->edid)
 545                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 546
 547         /* Find the native mode if this is a digital panel, if we didn't
 548          * find any modes through DDC previously add the native mode to
 549          * the list of modes.
 550          */
 551         if (!nv_connector->native_mode)
 552                 nv_connector->native_mode =
 553                         nouveau_connector_native_mode(nv_connector);
 554         if (ret == 0 && nv_connector->native_mode) {
 555                 struct drm_display_mode *mode;
 556
 557                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 558                 drm_mode_probed_add(connector, mode);
 559                 ret = 1;
 560         }
 561
 562         if (nv_encoder->dcb->type == OUTPUT_TV)
 563                 ret = get_slave_funcs(nv_encoder)->
 564                         get_modes(to_drm_encoder(nv_encoder), connector);
 565
 566         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 567                 ret += nouveau_connector_scaler_modes_add(connector);
 568
 569         return ret;
 570 }
 571
 572 static int
 573 nouveau_connector_mode_valid(struct drm_connector *connector,
 574                              struct drm_display_mode *mode)
 575 {
 576         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 577         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 578         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 579         unsigned min_clock = 25000, max_clock = min_clock;
 580         unsigned clock = mode->clock;
 581
 582         switch (nv_encoder->dcb->type) {
 583         case OUTPUT_LVDS:
 584                 BUG_ON(!nv_connector->native_mode);
 585                 if (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 586                     mode->vdisplay > nv_connector->native_mode->vdisplay)
 587                         return MODE_PANEL;
 588
 589                 min_clock = 0;
 590                 max_clock = 400000;
 591                 break;
 592         case OUTPUT_TMDS:
 593                 if ((dev_priv->card_type >= NV_50 && !nouveau_duallink) ||
 594                     (dev_priv->card_type < NV_50 &&
 595                      !nv_encoder->dcb->duallink_possible))
 596                         max_clock = 165000;
 597                 else
 598                         max_clock = 330000;
 599                 break;
 600         case OUTPUT_ANALOG:
 601                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 602                 if (!max_clock)
 603                         max_clock = 350000;
 604                 break;
 605         case OUTPUT_TV:
 606                 return get_slave_funcs(nv_encoder)->
 607                         mode_valid(to_drm_encoder(nv_encoder), mode);
 608         case OUTPUT_DP:
 609                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 610                         max_clock = nv_encoder->dp.link_nr * 270000;
 611                 else
 612                         max_clock = nv_encoder->dp.link_nr * 162000;
 613
 614                 clock *= 3;
 615                 break;
 616         }
 617
 618         if (clock < min_clock)
 619                 return MODE_CLOCK_LOW;
 620
 621         if (clock > max_clock)
 622                 return MODE_CLOCK_HIGH;
 623
 624         return MODE_OK;
 625 }
 626
 627 static struct drm_encoder *
 628 nouveau_connector_best_encoder(struct drm_connector *connector)
 629 {
 630         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 631
 632         if (nv_connector->detected_encoder)
 633                 return to_drm_encoder(nv_connector->detected_encoder);
 634
 635         return NULL;
 636 }
 637
 638 static const struct drm_connector_helper_funcs
 639 nouveau_connector_helper_funcs = {
 640         .get_modes = nouveau_connector_get_modes,
 641         .mode_valid = nouveau_connector_mode_valid,
 642         .best_encoder = nouveau_connector_best_encoder,
 643 };
 644
 645 static const struct drm_connector_funcs
 646 nouveau_connector_funcs = {
 647         .dpms = drm_helper_connector_dpms,
 648         .save = NULL,
 649         .restore = NULL,
 650         .detect = nouveau_connector_detect,
 651         .destroy = nouveau_connector_destroy,
 652         .fill_modes = drm_helper_probe_single_connector_modes,
 653         .set_property = nouveau_connector_set_property,
 654         .force = nouveau_connector_force
 655 };
 656
 657 static int
 658 nouveau_connector_create_lvds(struct drm_device *dev,
 659                               struct drm_connector *connector)
 660 {
 661         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 662         struct drm_nouveau_private *dev_priv = dev->dev_private;
 663         struct nouveau_i2c_chan *i2c = NULL;
 664         struct nouveau_encoder *nv_encoder;
 665         struct drm_display_mode native, *mode, *temp;
 666         bool dummy, if_is_24bit = false;
 667         int ret, flags;
 668
 669         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 670         if (!nv_encoder)
 671                 return -ENODEV;
 672
 673         ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &if_is_24bit);
 674         if (ret) {
 675                 NV_ERROR(dev, "Error parsing LVDS table, disabling LVDS\n");
 676                 return ret;
 677         }
 678         nv_connector->use_dithering = !if_is_24bit;
 679
 680         /* Firstly try getting EDID over DDC, if allowed and I2C channel
 681          * is available.
 682          */
 683         if (!dev_priv->VBIOS.pub.fp_no_ddc && nv_encoder->dcb->i2c_index < 0xf)
 684                 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 685
 686         if (i2c) {
 687                 nouveau_connector_ddc_prepare(connector, &flags);
 688                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 689                 nouveau_connector_ddc_finish(connector, flags);
 690         }
 691
 692         /* If no EDID found above, and the VBIOS indicates a hardcoded
 693          * modeline is avalilable for the panel, set it as the panel's
 694          * native mode and exit.
 695          */
 696         if (!nv_connector->edid && nouveau_bios_fp_mode(dev, &native) &&
 697              (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 698               dev_priv->VBIOS.pub.fp_no_ddc)) {
 699                 nv_connector->native_mode = drm_mode_duplicate(dev, &native);
 700                 goto out;
 701         }
 702
 703         /* Still nothing, some VBIOS images have a hardcoded EDID block
 704          * stored for the panel stored in them.
 705          */
 706         if (!nv_connector->edid && !nv_connector->native_mode &&
 707             !dev_priv->VBIOS.pub.fp_no_ddc) {
 708                 struct edid *edid =
 709                         (struct edid *)nouveau_bios_embedded_edid(dev);
 710                 if (edid) {
 711                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 712                         *(nv_connector->edid) = *edid;
 713                 }
 714         }
 715
 716         if (!nv_connector->edid)
 717                 goto out;
 718
 719         /* We didn't find/use a panel mode from the VBIOS, so parse the EDID
 720          * block and look for the preferred mode there.
 721          */
 722         ret = drm_add_edid_modes(connector, nv_connector->edid);
 723         if (ret == 0)
 724                 goto out;
 725         nv_connector->detected_encoder = nv_encoder;
 726         nv_connector->native_mode = nouveau_connector_native_mode(nv_connector);
 727         list_for_each_entry_safe(mode, temp, &connector->probed_modes, head)
 728                 drm_mode_remove(connector, mode);
 729
 730 out:
 731         if (!nv_connector->native_mode) {
 732                 NV_ERROR(dev, "LVDS present in DCB table, but couldn't "
 733                               "determine its native mode.  Disabling.\n");
 734                 return -ENODEV;
 735         }
 736
 737         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 738         return 0;
 739 }
 740
 741 int
 742 nouveau_connector_create(struct drm_device *dev, int index, int type)
 743 {
 744         struct drm_nouveau_private *dev_priv = dev->dev_private;
 745         struct nouveau_connector *nv_connector = NULL;
 746         struct drm_connector *connector;
 747         struct drm_encoder *encoder;
 748         int ret;
 749
 750         NV_DEBUG_KMS(dev, "\n");
 751
 752         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 753         if (!nv_connector)
 754                 return -ENOMEM;
 755         nv_connector->dcb = nouveau_bios_connector_entry(dev, index);
 756         connector = &nv_connector->base;
 757
 758         switch (type) {
 759         case DRM_MODE_CONNECTOR_VGA:
 760                 NV_INFO(dev, "Detected a VGA connector\n");
 761                 break;
 762         case DRM_MODE_CONNECTOR_DVID:
 763                 NV_INFO(dev, "Detected a DVI-D connector\n");
 764                 break;
 765         case DRM_MODE_CONNECTOR_DVII:
 766                 NV_INFO(dev, "Detected a DVI-I connector\n");
 767                 break;
 768         case DRM_MODE_CONNECTOR_LVDS:
 769                 NV_INFO(dev, "Detected a LVDS connector\n");
 770                 break;
 771         case DRM_MODE_CONNECTOR_TV:
 772                 NV_INFO(dev, "Detected a TV connector\n");
 773                 break;
 774         case DRM_MODE_CONNECTOR_DisplayPort:
 775                 NV_INFO(dev, "Detected a DisplayPort connector\n");
 776                 break;
 777         default:
 778                 NV_ERROR(dev, "Unknown connector, this is not good.\n");
 779                 break;
 780         }
 781
 782         /* defaults, will get overridden in detect() */
 783         connector->interlace_allowed = false;
 784         connector->doublescan_allowed = false;
 785
 786         drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
 787         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 788
 789         /* Init DVI-I specific properties */
 790         if (type == DRM_MODE_CONNECTOR_DVII) {
 791                 drm_mode_create_dvi_i_properties(dev);
 792                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 793                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 794         }
 795
 796         if (type != DRM_MODE_CONNECTOR_LVDS)
 797                 nv_connector->use_dithering = false;
 798
 799         if (type == DRM_MODE_CONNECTOR_DVID ||
 800             type == DRM_MODE_CONNECTOR_DVII ||
 801             type == DRM_MODE_CONNECTOR_LVDS ||
 802             type == DRM_MODE_CONNECTOR_DisplayPort) {
 803                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 804
 805                 drm_connector_attach_property(connector, dev->mode_config.scaling_mode_property,
 806                                               nv_connector->scaling_mode);
 807                 drm_connector_attach_property(connector, dev->mode_config.dithering_mode_property,
 808                                               nv_connector->use_dithering ? DRM_MODE_DITHERING_ON
 809                                               : DRM_MODE_DITHERING_OFF);
 810
 811         } else {
 812                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 813
 814                 if (type == DRM_MODE_CONNECTOR_VGA  &&
 815                                 dev_priv->card_type >= NV_50) {
 816                         drm_connector_attach_property(connector,
 817                                         dev->mode_config.scaling_mode_property,
 818                                         nv_connector->scaling_mode);
 819                 }
 820         }
 821
 822         /* attach encoders */
 823         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 824                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 825
 826                 if (nv_encoder->dcb->connector != index)
 827                         continue;
 828
 829                 if (get_slave_funcs(nv_encoder))
 830                         get_slave_funcs(nv_encoder)->create_resources(encoder, connector);
 831
 832                 drm_mode_connector_attach_encoder(connector, encoder);
 833         }
 834
 835         drm_sysfs_connector_add(connector);
 836
 837         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS) {
 838                 ret = nouveau_connector_create_lvds(dev, connector);
 839                 if (ret) {
 840                         connector->funcs->destroy(connector);
 841                         return ret;
 842                 }
 843         }
 844
 845         return 0;
 846 }