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 struct nouveau_encoder *
  41 find_encoder_by_type(struct drm_connector *connector, int type)
  42 {
  43         struct drm_device *dev = connector->dev;
  44         struct nouveau_encoder *nv_encoder;
  45         struct drm_mode_object *obj;
  46         int i, id;
  47
  48         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  49                 id = connector->encoder_ids[i];
  50                 if (!id)
  51                         break;
  52
  53                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  54                 if (!obj)
  55                         continue;
  56                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  57
  58                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  59                         return nv_encoder;
  60         }
  61
  62         return NULL;
  63 }
  64
  65 struct nouveau_connector *
  66 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  67 {
  68         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  69         struct drm_connector *drm_connector;
  70
  71         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  72                 if (drm_connector->encoder == to_drm_encoder(encoder))
  73                         return nouveau_connector(drm_connector);
  74         }
  75
  76         return NULL;
  77 }
  78
  79 /*TODO: This could use improvement, and learn to handle the fixed
  80  *      BIOS tables etc.  It's fine currently, for its only user.
  81  */
  82 int
  83 nouveau_connector_bpp(struct drm_connector *connector)
  84 {
  85         struct nouveau_connector *nv_connector = nouveau_connector(connector);
  86
  87         if (nv_connector->edid && nv_connector->edid->revision >= 4) {
  88                 u8 bpc = ((nv_connector->edid->input & 0x70) >> 3) + 4;
  89                 if (bpc > 4)
  90                         return bpc;
  91         }
  92
  93         return 18;
  94 }
  95
  96 static void
  97 nouveau_connector_destroy(struct drm_connector *drm_connector)
  98 {
  99         struct nouveau_connector *nv_connector =
 100                 nouveau_connector(drm_connector);
 101         struct drm_device *dev;
 102
 103         if (!nv_connector)
 104                 return;
 105
 106         dev = nv_connector->base.dev;
 107         NV_DEBUG_KMS(dev, "\n");
 108
 109         kfree(nv_connector->edid);
 110         drm_sysfs_connector_remove(drm_connector);
 111         drm_connector_cleanup(drm_connector);
 112         kfree(drm_connector);
 113 }
 114
 115 static struct nouveau_i2c_chan *
 116 nouveau_connector_ddc_detect(struct drm_connector *connector,
 117                              struct nouveau_encoder **pnv_encoder)
 118 {
 119         struct drm_device *dev = connector->dev;
 120         int i;
 121
 122         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 123                 struct nouveau_i2c_chan *i2c = NULL;
 124                 struct nouveau_encoder *nv_encoder;
 125                 struct drm_mode_object *obj;
 126                 int id;
 127
 128                 id = connector->encoder_ids[i];
 129                 if (!id)
 130                         break;
 131
 132                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 133                 if (!obj)
 134                         continue;
 135                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 136
 137                 if (nv_encoder->dcb->i2c_index < 0xf)
 138                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 139
 140                 if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
 141                         *pnv_encoder = nv_encoder;
 142                         return i2c;
 143                 }
 144         }
 145
 146         return NULL;
 147 }
 148
 149 static struct nouveau_encoder *
 150 nouveau_connector_of_detect(struct drm_connector *connector)
 151 {
 152 #ifdef __powerpc__
 153         struct drm_device *dev = connector->dev;
 154         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 155         struct nouveau_encoder *nv_encoder;
 156         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 157
 158         if (!dn ||
 159             !((nv_encoder = find_encoder_by_type(connector, OUTPUT_TMDS)) ||
 160               (nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG))))
 161                 return NULL;
 162
 163         for_each_child_of_node(dn, cn) {
 164                 const char *name = of_get_property(cn, "name", NULL);
 165                 const void *edid = of_get_property(cn, "EDID", NULL);
 166                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 167
 168                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 169                         nv_connector->edid =
 170                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 171                         of_node_put(cn);
 172                         return nv_encoder;
 173                 }
 174         }
 175 #endif
 176         return NULL;
 177 }
 178
 179 static void
 180 nouveau_connector_set_encoder(struct drm_connector *connector,
 181                               struct nouveau_encoder *nv_encoder)
 182 {
 183         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 184         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 185         struct drm_device *dev = connector->dev;
 186
 187         if (nv_connector->detected_encoder == nv_encoder)
 188                 return;
 189         nv_connector->detected_encoder = nv_encoder;
 190
 191         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 192             nv_encoder->dcb->type == OUTPUT_TMDS) {
 193                 connector->doublescan_allowed = false;
 194                 connector->interlace_allowed = false;
 195         } else {
 196                 connector->doublescan_allowed = true;
 197                 if (dev_priv->card_type == NV_20 ||
 198                    (dev_priv->card_type == NV_10 &&
 199                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 200                     (dev->pci_device & 0x0ff0) != 0x0150))
 201                         /* HW is broken */
 202                         connector->interlace_allowed = false;
 203                 else
 204                         connector->interlace_allowed = true;
 205         }
 206
 207         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 208                 drm_connector_property_set_value(connector,
 209                         dev->mode_config.dvi_i_subconnector_property,
 210                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 211                         DRM_MODE_SUBCONNECTOR_DVID :
 212                         DRM_MODE_SUBCONNECTOR_DVIA);
 213         }
 214 }
 215
 216 static bool
 217 nouveau_connector_poll_allowed(struct drm_connector *connector)
 218 {
 219         struct drm_device *dev = connector->dev;
 220         struct drm_nouveau_private *dev_priv = dev->dev_private;
 221         struct drm_crtc *crtc;
 222         bool spare_crtc = false;
 223
 224         if (dev_priv->card_type >= NV_50) {
 225                 return true;
 226         } else {
 227                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 228                         spare_crtc |= !crtc->enabled;
 229
 230                 return spare_crtc;
 231         }
 232 }
 233
 234 static enum drm_connector_status
 235 nouveau_connector_detect(struct drm_connector *connector, bool force)
 236 {
 237         struct drm_device *dev = connector->dev;
 238         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 239         struct nouveau_encoder *nv_encoder = NULL;
 240         struct nouveau_i2c_chan *i2c;
 241         int type;
 242
 243         /* Cleanup the previous EDID block. */
 244         if (nv_connector->edid) {
 245                 drm_mode_connector_update_edid_property(connector, NULL);
 246                 kfree(nv_connector->edid);
 247                 nv_connector->edid = NULL;
 248         }
 249
 250         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 251         if (i2c) {
 252                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 253                 drm_mode_connector_update_edid_property(connector,
 254                                                         nv_connector->edid);
 255                 if (!nv_connector->edid) {
 256                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 257                                  drm_get_connector_name(connector));
 258                         goto detect_analog;
 259                 }
 260
 261                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 262                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 263                         NV_ERROR(dev, "Detected %s, but failed init\n",
 264                                  drm_get_connector_name(connector));
 265                         return connector_status_disconnected;
 266                 }
 267
 268                 /* Override encoder type for DVI-I based on whether EDID
 269                  * says the display is digital or analog, both use the
 270                  * same i2c channel so the value returned from ddc_detect
 271                  * isn't necessarily correct.
 272                  */
 273                 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 274                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 275                                 type = OUTPUT_TMDS;
 276                         else
 277                                 type = OUTPUT_ANALOG;
 278
 279                         nv_encoder = find_encoder_by_type(connector, type);
 280                         if (!nv_encoder) {
 281                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 282                                               "but no object!\n", type,
 283                                          drm_get_connector_name(connector));
 284                                 return connector_status_disconnected;
 285                         }
 286                 }
 287
 288                 nouveau_connector_set_encoder(connector, nv_encoder);
 289                 return connector_status_connected;
 290         }
 291
 292         nv_encoder = nouveau_connector_of_detect(connector);
 293         if (nv_encoder) {
 294                 nouveau_connector_set_encoder(connector, nv_encoder);
 295                 return connector_status_connected;
 296         }
 297
 298 detect_analog:
 299         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 300         if (!nv_encoder && !nouveau_tv_disable)
 301                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 302         if (nv_encoder &&
 303             (force || nouveau_connector_poll_allowed(connector))) {
 304                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 305                 struct drm_encoder_helper_funcs *helper =
 306                                                 encoder->helper_private;
 307
 308                 if (helper->detect(encoder, connector) ==
 309                                                 connector_status_connected) {
 310                         nouveau_connector_set_encoder(connector, nv_encoder);
 311                         return connector_status_connected;
 312                 }
 313
 314         }
 315
 316         return connector_status_disconnected;
 317 }
 318
 319 static enum drm_connector_status
 320 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 321 {
 322         struct drm_device *dev = connector->dev;
 323         struct drm_nouveau_private *dev_priv = dev->dev_private;
 324         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 325         struct nouveau_encoder *nv_encoder = NULL;
 326         enum drm_connector_status status = connector_status_disconnected;
 327
 328         /* Cleanup the previous EDID block. */
 329         if (nv_connector->edid) {
 330                 drm_mode_connector_update_edid_property(connector, NULL);
 331                 kfree(nv_connector->edid);
 332                 nv_connector->edid = NULL;
 333         }
 334
 335         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 336         if (!nv_encoder)
 337                 return connector_status_disconnected;
 338
 339         /* Try retrieving EDID via DDC */
 340         if (!dev_priv->vbios.fp_no_ddc) {
 341                 status = nouveau_connector_detect(connector, force);
 342                 if (status == connector_status_connected)
 343                         goto out;
 344         }
 345
 346         /* On some laptops (Sony, i'm looking at you) there appears to
 347          * be no direct way of accessing the panel's EDID.  The only
 348          * option available to us appears to be to ask ACPI for help..
 349          *
 350          * It's important this check's before trying straps, one of the
 351          * said manufacturer's laptops are configured in such a way
 352          * the nouveau decides an entry in the VBIOS FP mode table is
 353          * valid - it's not (rh#613284)
 354          */
 355         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 356                 if (!nouveau_acpi_edid(dev, connector)) {
 357                         status = connector_status_connected;
 358                         goto out;
 359                 }
 360         }
 361
 362         /* If no EDID found above, and the VBIOS indicates a hardcoded
 363          * modeline is avalilable for the panel, set it as the panel's
 364          * native mode and exit.
 365          */
 366         if (nouveau_bios_fp_mode(dev, NULL) && (dev_priv->vbios.fp_no_ddc ||
 367             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 368                 status = connector_status_connected;
 369                 goto out;
 370         }
 371
 372         /* Still nothing, some VBIOS images have a hardcoded EDID block
 373          * stored for the panel stored in them.
 374          */
 375         if (!dev_priv->vbios.fp_no_ddc) {
 376                 struct edid *edid =
 377                         (struct edid *)nouveau_bios_embedded_edid(dev);
 378                 if (edid) {
 379                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 380                         *(nv_connector->edid) = *edid;
 381                         status = connector_status_connected;
 382                 }
 383         }
 384
 385 out:
 386 #if defined(CONFIG_ACPI_BUTTON) || \
 387         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 388         if (status == connector_status_connected &&
 389             !nouveau_ignorelid && !acpi_lid_open())
 390                 status = connector_status_unknown;
 391 #endif
 392
 393         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 394         nouveau_connector_set_encoder(connector, nv_encoder);
 395         return status;
 396 }
 397
 398 static void
 399 nouveau_connector_force(struct drm_connector *connector)
 400 {
 401         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 402         struct nouveau_encoder *nv_encoder;
 403         int type;
 404
 405         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 406                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 407                         type = OUTPUT_TMDS;
 408                 else
 409                         type = OUTPUT_ANALOG;
 410         } else
 411                 type = OUTPUT_ANY;
 412
 413         nv_encoder = find_encoder_by_type(connector, type);
 414         if (!nv_encoder) {
 415                 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
 416                          drm_get_connector_name(connector));
 417                 connector->status = connector_status_disconnected;
 418                 return;
 419         }
 420
 421         nouveau_connector_set_encoder(connector, nv_encoder);
 422 }
 423
 424 static int
 425 nouveau_connector_set_property(struct drm_connector *connector,
 426                                struct drm_property *property, uint64_t value)
 427 {
 428         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 429         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 430         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 431         struct drm_device *dev = connector->dev;
 432         int ret;
 433
 434         /* Scaling mode */
 435         if (property == dev->mode_config.scaling_mode_property) {
 436                 struct nouveau_crtc *nv_crtc = NULL;
 437                 bool modeset = false;
 438
 439                 switch (value) {
 440                 case DRM_MODE_SCALE_NONE:
 441                 case DRM_MODE_SCALE_FULLSCREEN:
 442                 case DRM_MODE_SCALE_CENTER:
 443                 case DRM_MODE_SCALE_ASPECT:
 444                         break;
 445                 default:
 446                         return -EINVAL;
 447                 }
 448
 449                 /* LVDS always needs gpu scaling */
 450                 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
 451                     value == DRM_MODE_SCALE_NONE)
 452                         return -EINVAL;
 453
 454                 /* Changing between GPU and panel scaling requires a full
 455                  * modeset
 456                  */
 457                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 458                     (value == DRM_MODE_SCALE_NONE))
 459                         modeset = true;
 460                 nv_connector->scaling_mode = value;
 461
 462                 if (connector->encoder && connector->encoder->crtc)
 463                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 464                 if (!nv_crtc)
 465                         return 0;
 466
 467                 if (modeset || !nv_crtc->set_scale) {
 468                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 469                                                         &nv_crtc->base.mode,
 470                                                         nv_crtc->base.x,
 471                                                         nv_crtc->base.y, NULL);
 472                         if (!ret)
 473                                 return -EINVAL;
 474                 } else {
 475                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 476                         if (ret)
 477                                 return ret;
 478                 }
 479
 480                 return 0;
 481         }
 482
 483         /* Dithering */
 484         if (property == dev->mode_config.dithering_mode_property) {
 485                 struct nouveau_crtc *nv_crtc = NULL;
 486
 487                 if (value == DRM_MODE_DITHERING_ON)
 488                         nv_connector->use_dithering = true;
 489                 else
 490                         nv_connector->use_dithering = false;
 491
 492                 if (connector->encoder && connector->encoder->crtc)
 493                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 494
 495                 if (!nv_crtc || !nv_crtc->set_dither)
 496                         return 0;
 497
 498                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 499                                            true);
 500         }
 501
 502         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 503                 return get_slave_funcs(encoder)->set_property(
 504                         encoder, connector, property, value);
 505
 506         return -EINVAL;
 507 }
 508
 509 static struct drm_display_mode *
 510 nouveau_connector_native_mode(struct drm_connector *connector)
 511 {
 512         struct drm_connector_helper_funcs *helper = connector->helper_private;
 513         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 514         struct drm_device *dev = connector->dev;
 515         struct drm_display_mode *mode, *largest = NULL;
 516         int high_w = 0, high_h = 0, high_v = 0;
 517
 518         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 519                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 520                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 521                         continue;
 522
 523                 /* Use preferred mode if there is one.. */
 524                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 525                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 526                         return drm_mode_duplicate(dev, mode);
 527                 }
 528
 529                 /* Otherwise, take the resolution with the largest width, then
 530                  * height, then vertical refresh
 531                  */
 532                 if (mode->hdisplay < high_w)
 533                         continue;
 534
 535                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 536                         continue;
 537
 538                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 539                     mode->vrefresh < high_v)
 540                         continue;
 541
 542                 high_w = mode->hdisplay;
 543                 high_h = mode->vdisplay;
 544                 high_v = mode->vrefresh;
 545                 largest = mode;
 546         }
 547
 548         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 549                       high_w, high_h, high_v);
 550         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 551 }
 552
 553 struct moderec {
 554         int hdisplay;
 555         int vdisplay;
 556 };
 557
 558 static struct moderec scaler_modes[] = {
 559         { 1920, 1200 },
 560         { 1920, 1080 },
 561         { 1680, 1050 },
 562         { 1600, 1200 },
 563         { 1400, 1050 },
 564         { 1280, 1024 },
 565         { 1280, 960 },
 566         { 1152, 864 },
 567         { 1024, 768 },
 568         { 800, 600 },
 569         { 720, 400 },
 570         { 640, 480 },
 571         { 640, 400 },
 572         { 640, 350 },
 573         {}
 574 };
 575
 576 static int
 577 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 578 {
 579         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 580         struct drm_display_mode *native = nv_connector->native_mode, *m;
 581         struct drm_device *dev = connector->dev;
 582         struct moderec *mode = &scaler_modes[0];
 583         int modes = 0;
 584
 585         if (!native)
 586                 return 0;
 587
 588         while (mode->hdisplay) {
 589                 if (mode->hdisplay <= native->hdisplay &&
 590                     mode->vdisplay <= native->vdisplay) {
 591                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 592                                          drm_mode_vrefresh(native), false,
 593                                          false, false);
 594                         if (!m)
 595                                 continue;
 596
 597                         m->type |= DRM_MODE_TYPE_DRIVER;
 598
 599                         drm_mode_probed_add(connector, m);
 600                         modes++;
 601                 }
 602
 603                 mode++;
 604         }
 605
 606         return modes;
 607 }
 608
 609 static int
 610 nouveau_connector_get_modes(struct drm_connector *connector)
 611 {
 612         struct drm_device *dev = connector->dev;
 613         struct drm_nouveau_private *dev_priv = dev->dev_private;
 614         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 615         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 616         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 617         int ret = 0;
 618
 619         /* destroy the native mode, the attached monitor could have changed.
 620          */
 621         if (nv_connector->native_mode) {
 622                 drm_mode_destroy(dev, nv_connector->native_mode);
 623                 nv_connector->native_mode = NULL;
 624         }
 625
 626         if (nv_connector->edid)
 627                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 628         else
 629         if (nv_encoder->dcb->type == OUTPUT_LVDS &&
 630             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 631              dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 632                 struct drm_display_mode mode;
 633
 634                 nouveau_bios_fp_mode(dev, &mode);
 635                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 636         }
 637
 638         /* Find the native mode if this is a digital panel, if we didn't
 639          * find any modes through DDC previously add the native mode to
 640          * the list of modes.
 641          */
 642         if (!nv_connector->native_mode)
 643                 nv_connector->native_mode =
 644                         nouveau_connector_native_mode(connector);
 645         if (ret == 0 && nv_connector->native_mode) {
 646                 struct drm_display_mode *mode;
 647
 648                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 649                 drm_mode_probed_add(connector, mode);
 650                 ret = 1;
 651         }
 652
 653         if (nv_encoder->dcb->type == OUTPUT_TV)
 654                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 655
 656         if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS ||
 657             nv_connector->dcb->type == DCB_CONNECTOR_eDP)
 658                 ret += nouveau_connector_scaler_modes_add(connector);
 659
 660         return ret;
 661 }
 662
 663 static unsigned
 664 get_tmds_link_bandwidth(struct drm_connector *connector)
 665 {
 666         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 667         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 668         struct dcb_entry *dcb = nv_connector->detected_encoder->dcb;
 669
 670         if (dcb->location != DCB_LOC_ON_CHIP ||
 671             dev_priv->chipset >= 0x46)
 672                 return 165000;
 673         else if (dev_priv->chipset >= 0x40)
 674                 return 155000;
 675         else if (dev_priv->chipset >= 0x18)
 676                 return 135000;
 677         else
 678                 return 112000;
 679 }
 680
 681 static int
 682 nouveau_connector_mode_valid(struct drm_connector *connector,
 683                              struct drm_display_mode *mode)
 684 {
 685         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 686         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 687         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 688         unsigned min_clock = 25000, max_clock = min_clock;
 689         unsigned clock = mode->clock;
 690
 691         switch (nv_encoder->dcb->type) {
 692         case OUTPUT_LVDS:
 693                 if (nv_connector->native_mode &&
 694                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 695                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 696                         return MODE_PANEL;
 697
 698                 min_clock = 0;
 699                 max_clock = 400000;
 700                 break;
 701         case OUTPUT_TMDS:
 702                 max_clock = get_tmds_link_bandwidth(connector);
 703                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 704                         max_clock *= 2;
 705                 break;
 706         case OUTPUT_ANALOG:
 707                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 708                 if (!max_clock)
 709                         max_clock = 350000;
 710                 break;
 711         case OUTPUT_TV:
 712                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 713         case OUTPUT_DP:
 714                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 715                         max_clock = nv_encoder->dp.link_nr * 270000;
 716                 else
 717                         max_clock = nv_encoder->dp.link_nr * 162000;
 718
 719                 clock = clock * nouveau_connector_bpp(connector) / 8;
 720                 break;
 721         default:
 722                 BUG_ON(1);
 723                 return MODE_BAD;
 724         }
 725
 726         if (clock < min_clock)
 727                 return MODE_CLOCK_LOW;
 728
 729         if (clock > max_clock)
 730                 return MODE_CLOCK_HIGH;
 731
 732         return MODE_OK;
 733 }
 734
 735 static struct drm_encoder *
 736 nouveau_connector_best_encoder(struct drm_connector *connector)
 737 {
 738         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 739
 740         if (nv_connector->detected_encoder)
 741                 return to_drm_encoder(nv_connector->detected_encoder);
 742
 743         return NULL;
 744 }
 745
 746 static const struct drm_connector_helper_funcs
 747 nouveau_connector_helper_funcs = {
 748         .get_modes = nouveau_connector_get_modes,
 749         .mode_valid = nouveau_connector_mode_valid,
 750         .best_encoder = nouveau_connector_best_encoder,
 751 };
 752
 753 static const struct drm_connector_funcs
 754 nouveau_connector_funcs = {
 755         .dpms = drm_helper_connector_dpms,
 756         .save = NULL,
 757         .restore = NULL,
 758         .detect = nouveau_connector_detect,
 759         .destroy = nouveau_connector_destroy,
 760         .fill_modes = drm_helper_probe_single_connector_modes,
 761         .set_property = nouveau_connector_set_property,
 762         .force = nouveau_connector_force
 763 };
 764
 765 static const struct drm_connector_funcs
 766 nouveau_connector_funcs_lvds = {
 767         .dpms = drm_helper_connector_dpms,
 768         .save = NULL,
 769         .restore = NULL,
 770         .detect = nouveau_connector_detect_lvds,
 771         .destroy = nouveau_connector_destroy,
 772         .fill_modes = drm_helper_probe_single_connector_modes,
 773         .set_property = nouveau_connector_set_property,
 774         .force = nouveau_connector_force
 775 };
 776
 777 struct drm_connector *
 778 nouveau_connector_create(struct drm_device *dev, int index)
 779 {
 780         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 781         struct drm_nouveau_private *dev_priv = dev->dev_private;
 782         struct nouveau_connector *nv_connector = NULL;
 783         struct dcb_connector_table_entry *dcb = NULL;
 784         struct drm_connector *connector;
 785         int type, ret = 0;
 786
 787         NV_DEBUG_KMS(dev, "\n");
 788
 789         if (index >= dev_priv->vbios.dcb.connector.entries)
 790                 return ERR_PTR(-EINVAL);
 791
 792         dcb = &dev_priv->vbios.dcb.connector.entry[index];
 793         if (dcb->drm)
 794                 return dcb->drm;
 795
 796         switch (dcb->type) {
 797         case DCB_CONNECTOR_VGA:
 798                 type = DRM_MODE_CONNECTOR_VGA;
 799                 break;
 800         case DCB_CONNECTOR_TV_0:
 801         case DCB_CONNECTOR_TV_1:
 802         case DCB_CONNECTOR_TV_3:
 803                 type = DRM_MODE_CONNECTOR_TV;
 804                 break;
 805         case DCB_CONNECTOR_DVI_I:
 806                 type = DRM_MODE_CONNECTOR_DVII;
 807                 break;
 808         case DCB_CONNECTOR_DVI_D:
 809                 type = DRM_MODE_CONNECTOR_DVID;
 810                 break;
 811         case DCB_CONNECTOR_HDMI_0:
 812         case DCB_CONNECTOR_HDMI_1:
 813                 type = DRM_MODE_CONNECTOR_HDMIA;
 814                 break;
 815         case DCB_CONNECTOR_LVDS:
 816                 type = DRM_MODE_CONNECTOR_LVDS;
 817                 funcs = &nouveau_connector_funcs_lvds;
 818                 break;
 819         case DCB_CONNECTOR_DP:
 820                 type = DRM_MODE_CONNECTOR_DisplayPort;
 821                 break;
 822         case DCB_CONNECTOR_eDP:
 823                 type = DRM_MODE_CONNECTOR_eDP;
 824                 break;
 825         default:
 826                 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
 827                 return ERR_PTR(-EINVAL);
 828         }
 829
 830         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 831         if (!nv_connector)
 832                 return ERR_PTR(-ENOMEM);
 833         nv_connector->dcb = dcb;
 834         connector = &nv_connector->base;
 835
 836         /* defaults, will get overridden in detect() */
 837         connector->interlace_allowed = false;
 838         connector->doublescan_allowed = false;
 839
 840         drm_connector_init(dev, connector, funcs, type);
 841         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 842
 843         /* Check if we need dithering enabled */
 844         if (dcb->type == DCB_CONNECTOR_LVDS) {
 845                 bool dummy, is_24bit = false;
 846
 847                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &is_24bit);
 848                 if (ret) {
 849                         NV_ERROR(dev, "Error parsing LVDS table, disabling "
 850                                  "LVDS\n");
 851                         goto fail;
 852                 }
 853
 854                 nv_connector->use_dithering = !is_24bit;
 855         }
 856
 857         /* Init DVI-I specific properties */
 858         if (dcb->type == DCB_CONNECTOR_DVI_I) {
 859                 drm_mode_create_dvi_i_properties(dev);
 860                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 861                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 862         }
 863
 864         switch (dcb->type) {
 865         case DCB_CONNECTOR_VGA:
 866                 if (dev_priv->card_type >= NV_50) {
 867                         drm_connector_attach_property(connector,
 868                                         dev->mode_config.scaling_mode_property,
 869                                         nv_connector->scaling_mode);
 870                 }
 871                 /* fall-through */
 872         case DCB_CONNECTOR_TV_0:
 873         case DCB_CONNECTOR_TV_1:
 874         case DCB_CONNECTOR_TV_3:
 875                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 876
 877                 if (nv_gf4_disp_arch(dev))
 878                         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 879                 break;
 880         default:
 881                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 882
 883                 drm_connector_attach_property(connector,
 884                                 dev->mode_config.scaling_mode_property,
 885                                 nv_connector->scaling_mode);
 886                 drm_connector_attach_property(connector,
 887                                 dev->mode_config.dithering_mode_property,
 888                                 nv_connector->use_dithering ?
 889                                 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 890
 891                 if (dcb->type != DCB_CONNECTOR_LVDS) {
 892                         if (dev_priv->card_type >= NV_50)
 893                                 connector->polled = DRM_CONNECTOR_POLL_HPD;
 894                         else
 895                                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 896                 }
 897                 break;
 898         }
 899
 900         drm_sysfs_connector_add(connector);
 901         dcb->drm = connector;
 902         return dcb->drm;
 903
 904 fail:
 905         drm_connector_cleanup(connector);
 906         kfree(connector);
 907         return ERR_PTR(ret);
 908
 909 }