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 void nouveau_connector_hotplug(void *, int);
  41
  42 static struct nouveau_encoder *
  43 find_encoder_by_type(struct drm_connector *connector, int type)
  44 {
  45         struct drm_device *dev = connector->dev;
  46         struct nouveau_encoder *nv_encoder;
  47         struct drm_mode_object *obj;
  48         int i, id;
  49
  50         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  51                 id = connector->encoder_ids[i];
  52                 if (!id)
  53                         break;
  54
  55                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  56                 if (!obj)
  57                         continue;
  58                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  59
  60                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  61                         return nv_encoder;
  62         }
  63
  64         return NULL;
  65 }
  66
  67 struct nouveau_connector *
  68 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  69 {
  70         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  71         struct drm_connector *drm_connector;
  72
  73         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  74                 if (drm_connector->encoder == to_drm_encoder(encoder))
  75                         return nouveau_connector(drm_connector);
  76         }
  77
  78         return NULL;
  79 }
  80
  81 /*TODO: This could use improvement, and learn to handle the fixed
  82  *      BIOS tables etc.  It's fine currently, for its only user.
  83  */
  84 int
  85 nouveau_connector_bpp(struct drm_connector *connector)
  86 {
  87         struct nouveau_connector *nv_connector = nouveau_connector(connector);
  88
  89         if (nv_connector->edid && nv_connector->edid->revision >= 4) {
  90                 u8 bpc = ((nv_connector->edid->input & 0x70) >> 3) + 4;
  91                 if (bpc > 4)
  92                         return bpc;
  93         }
  94
  95         return 18;
  96 }
  97
  98 static void
  99 nouveau_connector_destroy(struct drm_connector *connector)
 100 {
 101         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 102         struct drm_nouveau_private *dev_priv;
 103         struct nouveau_gpio_engine *pgpio;
 104         struct drm_device *dev;
 105
 106         if (!nv_connector)
 107                 return;
 108
 109         dev = nv_connector->base.dev;
 110         dev_priv = dev->dev_private;
 111         NV_DEBUG_KMS(dev, "\n");
 112
 113         pgpio = &dev_priv->engine.gpio;
 114         if (pgpio->irq_unregister) {
 115                 pgpio->irq_unregister(dev, nv_connector->dcb->gpio_tag,
 116                                       nouveau_connector_hotplug, connector);
 117         }
 118
 119         kfree(nv_connector->edid);
 120         drm_sysfs_connector_remove(connector);
 121         drm_connector_cleanup(connector);
 122         kfree(connector);
 123 }
 124
 125 static struct nouveau_i2c_chan *
 126 nouveau_connector_ddc_detect(struct drm_connector *connector,
 127                              struct nouveau_encoder **pnv_encoder)
 128 {
 129         struct drm_device *dev = connector->dev;
 130         int i;
 131
 132         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 133                 struct nouveau_i2c_chan *i2c = NULL;
 134                 struct nouveau_encoder *nv_encoder;
 135                 struct drm_mode_object *obj;
 136                 int id;
 137
 138                 id = connector->encoder_ids[i];
 139                 if (!id)
 140                         break;
 141
 142                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 143                 if (!obj)
 144                         continue;
 145                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 146
 147                 if (nv_encoder->dcb->i2c_index < 0xf)
 148                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 149
 150                 if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
 151                         *pnv_encoder = nv_encoder;
 152                         return i2c;
 153                 }
 154         }
 155
 156         return NULL;
 157 }
 158
 159 static struct nouveau_encoder *
 160 nouveau_connector_of_detect(struct drm_connector *connector)
 161 {
 162 #ifdef __powerpc__
 163         struct drm_device *dev = connector->dev;
 164         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 165         struct nouveau_encoder *nv_encoder;
 166         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 167
 168         if (!dn ||
 169             !((nv_encoder = find_encoder_by_type(connector, OUTPUT_TMDS)) ||
 170               (nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG))))
 171                 return NULL;
 172
 173         for_each_child_of_node(dn, cn) {
 174                 const char *name = of_get_property(cn, "name", NULL);
 175                 const void *edid = of_get_property(cn, "EDID", NULL);
 176                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 177
 178                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 179                         nv_connector->edid =
 180                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 181                         of_node_put(cn);
 182                         return nv_encoder;
 183                 }
 184         }
 185 #endif
 186         return NULL;
 187 }
 188
 189 static void
 190 nouveau_connector_set_encoder(struct drm_connector *connector,
 191                               struct nouveau_encoder *nv_encoder)
 192 {
 193         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 194         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 195         struct drm_device *dev = connector->dev;
 196
 197         if (nv_connector->detected_encoder == nv_encoder)
 198                 return;
 199         nv_connector->detected_encoder = nv_encoder;
 200
 201         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 202             nv_encoder->dcb->type == OUTPUT_TMDS) {
 203                 connector->doublescan_allowed = false;
 204                 connector->interlace_allowed = false;
 205         } else {
 206                 connector->doublescan_allowed = true;
 207                 if (dev_priv->card_type == NV_20 ||
 208                    (dev_priv->card_type == NV_10 &&
 209                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 210                     (dev->pci_device & 0x0ff0) != 0x0150))
 211                         /* HW is broken */
 212                         connector->interlace_allowed = false;
 213                 else
 214                         connector->interlace_allowed = true;
 215         }
 216
 217         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 218                 drm_connector_property_set_value(connector,
 219                         dev->mode_config.dvi_i_subconnector_property,
 220                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 221                         DRM_MODE_SUBCONNECTOR_DVID :
 222                         DRM_MODE_SUBCONNECTOR_DVIA);
 223         }
 224 }
 225
 226 static enum drm_connector_status
 227 nouveau_connector_detect(struct drm_connector *connector, bool force)
 228 {
 229         struct drm_device *dev = connector->dev;
 230         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 231         struct nouveau_encoder *nv_encoder = NULL;
 232         struct nouveau_i2c_chan *i2c;
 233         int type;
 234
 235         /* Cleanup the previous EDID block. */
 236         if (nv_connector->edid) {
 237                 drm_mode_connector_update_edid_property(connector, NULL);
 238                 kfree(nv_connector->edid);
 239                 nv_connector->edid = NULL;
 240         }
 241
 242         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 243         if (i2c) {
 244                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 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                         goto detect_analog;
 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 (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 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 = nouveau_connector_of_detect(connector);
 285         if (nv_encoder) {
 286                 nouveau_connector_set_encoder(connector, nv_encoder);
 287                 return connector_status_connected;
 288         }
 289
 290 detect_analog:
 291         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 292         if (!nv_encoder && !nouveau_tv_disable)
 293                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 294         if (nv_encoder && force) {
 295                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 296                 struct drm_encoder_helper_funcs *helper =
 297                                                 encoder->helper_private;
 298
 299                 if (helper->detect(encoder, connector) ==
 300                                                 connector_status_connected) {
 301                         nouveau_connector_set_encoder(connector, nv_encoder);
 302                         return connector_status_connected;
 303                 }
 304
 305         }
 306
 307         return connector_status_disconnected;
 308 }
 309
 310 static enum drm_connector_status
 311 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 312 {
 313         struct drm_device *dev = connector->dev;
 314         struct drm_nouveau_private *dev_priv = dev->dev_private;
 315         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 316         struct nouveau_encoder *nv_encoder = NULL;
 317         enum drm_connector_status status = connector_status_disconnected;
 318
 319         /* Cleanup the previous EDID block. */
 320         if (nv_connector->edid) {
 321                 drm_mode_connector_update_edid_property(connector, NULL);
 322                 kfree(nv_connector->edid);
 323                 nv_connector->edid = NULL;
 324         }
 325
 326         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 327         if (!nv_encoder)
 328                 return connector_status_disconnected;
 329
 330         /* Try retrieving EDID via DDC */
 331         if (!dev_priv->vbios.fp_no_ddc) {
 332                 status = nouveau_connector_detect(connector, force);
 333                 if (status == connector_status_connected)
 334                         goto out;
 335         }
 336
 337         /* On some laptops (Sony, i'm looking at you) there appears to
 338          * be no direct way of accessing the panel's EDID.  The only
 339          * option available to us appears to be to ask ACPI for help..
 340          *
 341          * It's important this check's before trying straps, one of the
 342          * said manufacturer's laptops are configured in such a way
 343          * the nouveau decides an entry in the VBIOS FP mode table is
 344          * valid - it's not (rh#613284)
 345          */
 346         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 347                 if (!nouveau_acpi_edid(dev, connector)) {
 348                         status = connector_status_connected;
 349                         goto out;
 350                 }
 351         }
 352
 353         /* If no EDID found above, and the VBIOS indicates a hardcoded
 354          * modeline is avalilable for the panel, set it as the panel's
 355          * native mode and exit.
 356          */
 357         if (nouveau_bios_fp_mode(dev, NULL) && (dev_priv->vbios.fp_no_ddc ||
 358             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 359                 status = connector_status_connected;
 360                 goto out;
 361         }
 362
 363         /* Still nothing, some VBIOS images have a hardcoded EDID block
 364          * stored for the panel stored in them.
 365          */
 366         if (!dev_priv->vbios.fp_no_ddc) {
 367                 struct edid *edid =
 368                         (struct edid *)nouveau_bios_embedded_edid(dev);
 369                 if (edid) {
 370                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 371                         *(nv_connector->edid) = *edid;
 372                         status = connector_status_connected;
 373                 }
 374         }
 375
 376 out:
 377 #if defined(CONFIG_ACPI_BUTTON) || \
 378         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 379         if (status == connector_status_connected &&
 380             !nouveau_ignorelid && !acpi_lid_open())
 381                 status = connector_status_unknown;
 382 #endif
 383
 384         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 385         nouveau_connector_set_encoder(connector, nv_encoder);
 386         return status;
 387 }
 388
 389 static void
 390 nouveau_connector_force(struct drm_connector *connector)
 391 {
 392         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 393         struct nouveau_encoder *nv_encoder;
 394         int type;
 395
 396         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 397                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 398                         type = OUTPUT_TMDS;
 399                 else
 400                         type = OUTPUT_ANALOG;
 401         } else
 402                 type = OUTPUT_ANY;
 403
 404         nv_encoder = find_encoder_by_type(connector, type);
 405         if (!nv_encoder) {
 406                 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
 407                          drm_get_connector_name(connector));
 408                 connector->status = connector_status_disconnected;
 409                 return;
 410         }
 411
 412         nouveau_connector_set_encoder(connector, nv_encoder);
 413 }
 414
 415 static int
 416 nouveau_connector_set_property(struct drm_connector *connector,
 417                                struct drm_property *property, uint64_t value)
 418 {
 419         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 420         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 421         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 422         struct drm_device *dev = connector->dev;
 423         int ret;
 424
 425         /* Scaling mode */
 426         if (property == dev->mode_config.scaling_mode_property) {
 427                 struct nouveau_crtc *nv_crtc = NULL;
 428                 bool modeset = false;
 429
 430                 switch (value) {
 431                 case DRM_MODE_SCALE_NONE:
 432                 case DRM_MODE_SCALE_FULLSCREEN:
 433                 case DRM_MODE_SCALE_CENTER:
 434                 case DRM_MODE_SCALE_ASPECT:
 435                         break;
 436                 default:
 437                         return -EINVAL;
 438                 }
 439
 440                 /* LVDS always needs gpu scaling */
 441                 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
 442                     value == DRM_MODE_SCALE_NONE)
 443                         return -EINVAL;
 444
 445                 /* Changing between GPU and panel scaling requires a full
 446                  * modeset
 447                  */
 448                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 449                     (value == DRM_MODE_SCALE_NONE))
 450                         modeset = true;
 451                 nv_connector->scaling_mode = value;
 452
 453                 if (connector->encoder && connector->encoder->crtc)
 454                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 455                 if (!nv_crtc)
 456                         return 0;
 457
 458                 if (modeset || !nv_crtc->set_scale) {
 459                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 460                                                         &nv_crtc->base.mode,
 461                                                         nv_crtc->base.x,
 462                                                         nv_crtc->base.y, NULL);
 463                         if (!ret)
 464                                 return -EINVAL;
 465                 } else {
 466                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 467                         if (ret)
 468                                 return ret;
 469                 }
 470
 471                 return 0;
 472         }
 473
 474         /* Dithering */
 475         if (property == dev->mode_config.dithering_mode_property) {
 476                 struct nouveau_crtc *nv_crtc = NULL;
 477
 478                 if (value == DRM_MODE_DITHERING_ON)
 479                         nv_connector->use_dithering = true;
 480                 else
 481                         nv_connector->use_dithering = false;
 482
 483                 if (connector->encoder && connector->encoder->crtc)
 484                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 485
 486                 if (!nv_crtc || !nv_crtc->set_dither)
 487                         return 0;
 488
 489                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 490                                            true);
 491         }
 492
 493         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 494                 return get_slave_funcs(encoder)->set_property(
 495                         encoder, connector, property, value);
 496
 497         return -EINVAL;
 498 }
 499
 500 static struct drm_display_mode *
 501 nouveau_connector_native_mode(struct drm_connector *connector)
 502 {
 503         struct drm_connector_helper_funcs *helper = connector->helper_private;
 504         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 505         struct drm_device *dev = connector->dev;
 506         struct drm_display_mode *mode, *largest = NULL;
 507         int high_w = 0, high_h = 0, high_v = 0;
 508
 509         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 510                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 511                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 512                         continue;
 513
 514                 /* Use preferred mode if there is one.. */
 515                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 516                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 517                         return drm_mode_duplicate(dev, mode);
 518                 }
 519
 520                 /* Otherwise, take the resolution with the largest width, then
 521                  * height, then vertical refresh
 522                  */
 523                 if (mode->hdisplay < high_w)
 524                         continue;
 525
 526                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 527                         continue;
 528
 529                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 530                     mode->vrefresh < high_v)
 531                         continue;
 532
 533                 high_w = mode->hdisplay;
 534                 high_h = mode->vdisplay;
 535                 high_v = mode->vrefresh;
 536                 largest = mode;
 537         }
 538
 539         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 540                       high_w, high_h, high_v);
 541         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 542 }
 543
 544 struct moderec {
 545         int hdisplay;
 546         int vdisplay;
 547 };
 548
 549 static struct moderec scaler_modes[] = {
 550         { 1920, 1200 },
 551         { 1920, 1080 },
 552         { 1680, 1050 },
 553         { 1600, 1200 },
 554         { 1400, 1050 },
 555         { 1280, 1024 },
 556         { 1280, 960 },
 557         { 1152, 864 },
 558         { 1024, 768 },
 559         { 800, 600 },
 560         { 720, 400 },
 561         { 640, 480 },
 562         { 640, 400 },
 563         { 640, 350 },
 564         {}
 565 };
 566
 567 static int
 568 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 569 {
 570         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 571         struct drm_display_mode *native = nv_connector->native_mode, *m;
 572         struct drm_device *dev = connector->dev;
 573         struct moderec *mode = &scaler_modes[0];
 574         int modes = 0;
 575
 576         if (!native)
 577                 return 0;
 578
 579         while (mode->hdisplay) {
 580                 if (mode->hdisplay <= native->hdisplay &&
 581                     mode->vdisplay <= native->vdisplay) {
 582                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 583                                          drm_mode_vrefresh(native), false,
 584                                          false, false);
 585                         if (!m)
 586                                 continue;
 587
 588                         m->type |= DRM_MODE_TYPE_DRIVER;
 589
 590                         drm_mode_probed_add(connector, m);
 591                         modes++;
 592                 }
 593
 594                 mode++;
 595         }
 596
 597         return modes;
 598 }
 599
 600 static int
 601 nouveau_connector_get_modes(struct drm_connector *connector)
 602 {
 603         struct drm_device *dev = connector->dev;
 604         struct drm_nouveau_private *dev_priv = dev->dev_private;
 605         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 606         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 607         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 608         int ret = 0;
 609
 610         /* destroy the native mode, the attached monitor could have changed.
 611          */
 612         if (nv_connector->native_mode) {
 613                 drm_mode_destroy(dev, nv_connector->native_mode);
 614                 nv_connector->native_mode = NULL;
 615         }
 616
 617         if (nv_connector->edid)
 618                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 619         else
 620         if (nv_encoder->dcb->type == OUTPUT_LVDS &&
 621             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 622              dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 623                 struct drm_display_mode mode;
 624
 625                 nouveau_bios_fp_mode(dev, &mode);
 626                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 627         }
 628
 629         /* Find the native mode if this is a digital panel, if we didn't
 630          * find any modes through DDC previously add the native mode to
 631          * the list of modes.
 632          */
 633         if (!nv_connector->native_mode)
 634                 nv_connector->native_mode =
 635                         nouveau_connector_native_mode(connector);
 636         if (ret == 0 && nv_connector->native_mode) {
 637                 struct drm_display_mode *mode;
 638
 639                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 640                 drm_mode_probed_add(connector, mode);
 641                 ret = 1;
 642         }
 643
 644         if (nv_encoder->dcb->type == OUTPUT_TV)
 645                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 646
 647         if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS ||
 648             nv_connector->dcb->type == DCB_CONNECTOR_eDP)
 649                 ret += nouveau_connector_scaler_modes_add(connector);
 650
 651         return ret;
 652 }
 653
 654 static unsigned
 655 get_tmds_link_bandwidth(struct drm_connector *connector)
 656 {
 657         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 658         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 659         struct dcb_entry *dcb = nv_connector->detected_encoder->dcb;
 660
 661         if (dcb->location != DCB_LOC_ON_CHIP ||
 662             dev_priv->chipset >= 0x46)
 663                 return 165000;
 664         else if (dev_priv->chipset >= 0x40)
 665                 return 155000;
 666         else if (dev_priv->chipset >= 0x18)
 667                 return 135000;
 668         else
 669                 return 112000;
 670 }
 671
 672 static int
 673 nouveau_connector_mode_valid(struct drm_connector *connector,
 674                              struct drm_display_mode *mode)
 675 {
 676         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 677         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 678         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 679         unsigned min_clock = 25000, max_clock = min_clock;
 680         unsigned clock = mode->clock;
 681
 682         switch (nv_encoder->dcb->type) {
 683         case OUTPUT_LVDS:
 684                 if (nv_connector->native_mode &&
 685                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 686                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 687                         return MODE_PANEL;
 688
 689                 min_clock = 0;
 690                 max_clock = 400000;
 691                 break;
 692         case OUTPUT_TMDS:
 693                 max_clock = get_tmds_link_bandwidth(connector);
 694                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 695                         max_clock *= 2;
 696                 break;
 697         case OUTPUT_ANALOG:
 698                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 699                 if (!max_clock)
 700                         max_clock = 350000;
 701                 break;
 702         case OUTPUT_TV:
 703                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 704         case OUTPUT_DP:
 705                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 706                         max_clock = nv_encoder->dp.link_nr * 270000;
 707                 else
 708                         max_clock = nv_encoder->dp.link_nr * 162000;
 709
 710                 clock = clock * nouveau_connector_bpp(connector) / 8;
 711                 break;
 712         default:
 713                 BUG_ON(1);
 714                 return MODE_BAD;
 715         }
 716
 717         if (clock < min_clock)
 718                 return MODE_CLOCK_LOW;
 719
 720         if (clock > max_clock)
 721                 return MODE_CLOCK_HIGH;
 722
 723         return MODE_OK;
 724 }
 725
 726 static struct drm_encoder *
 727 nouveau_connector_best_encoder(struct drm_connector *connector)
 728 {
 729         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 730
 731         if (nv_connector->detected_encoder)
 732                 return to_drm_encoder(nv_connector->detected_encoder);
 733
 734         return NULL;
 735 }
 736
 737 static const struct drm_connector_helper_funcs
 738 nouveau_connector_helper_funcs = {
 739         .get_modes = nouveau_connector_get_modes,
 740         .mode_valid = nouveau_connector_mode_valid,
 741         .best_encoder = nouveau_connector_best_encoder,
 742 };
 743
 744 static const struct drm_connector_funcs
 745 nouveau_connector_funcs = {
 746         .dpms = drm_helper_connector_dpms,
 747         .save = NULL,
 748         .restore = NULL,
 749         .detect = nouveau_connector_detect,
 750         .destroy = nouveau_connector_destroy,
 751         .fill_modes = drm_helper_probe_single_connector_modes,
 752         .set_property = nouveau_connector_set_property,
 753         .force = nouveau_connector_force
 754 };
 755
 756 static const struct drm_connector_funcs
 757 nouveau_connector_funcs_lvds = {
 758         .dpms = drm_helper_connector_dpms,
 759         .save = NULL,
 760         .restore = NULL,
 761         .detect = nouveau_connector_detect_lvds,
 762         .destroy = nouveau_connector_destroy,
 763         .fill_modes = drm_helper_probe_single_connector_modes,
 764         .set_property = nouveau_connector_set_property,
 765         .force = nouveau_connector_force
 766 };
 767
 768 struct drm_connector *
 769 nouveau_connector_create(struct drm_device *dev, int index)
 770 {
 771         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 772         struct drm_nouveau_private *dev_priv = dev->dev_private;
 773         struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio;
 774         struct nouveau_connector *nv_connector = NULL;
 775         struct dcb_connector_table_entry *dcb = NULL;
 776         struct drm_connector *connector;
 777         int type, ret = 0;
 778
 779         NV_DEBUG_KMS(dev, "\n");
 780
 781         if (index >= dev_priv->vbios.dcb.connector.entries)
 782                 return ERR_PTR(-EINVAL);
 783
 784         dcb = &dev_priv->vbios.dcb.connector.entry[index];
 785         if (dcb->drm)
 786                 return dcb->drm;
 787
 788         switch (dcb->type) {
 789         case DCB_CONNECTOR_VGA:
 790                 type = DRM_MODE_CONNECTOR_VGA;
 791                 break;
 792         case DCB_CONNECTOR_TV_0:
 793         case DCB_CONNECTOR_TV_1:
 794         case DCB_CONNECTOR_TV_3:
 795                 type = DRM_MODE_CONNECTOR_TV;
 796                 break;
 797         case DCB_CONNECTOR_DVI_I:
 798                 type = DRM_MODE_CONNECTOR_DVII;
 799                 break;
 800         case DCB_CONNECTOR_DVI_D:
 801                 type = DRM_MODE_CONNECTOR_DVID;
 802                 break;
 803         case DCB_CONNECTOR_HDMI_0:
 804         case DCB_CONNECTOR_HDMI_1:
 805                 type = DRM_MODE_CONNECTOR_HDMIA;
 806                 break;
 807         case DCB_CONNECTOR_LVDS:
 808                 type = DRM_MODE_CONNECTOR_LVDS;
 809                 funcs = &nouveau_connector_funcs_lvds;
 810                 break;
 811         case DCB_CONNECTOR_DP:
 812                 type = DRM_MODE_CONNECTOR_DisplayPort;
 813                 break;
 814         case DCB_CONNECTOR_eDP:
 815                 type = DRM_MODE_CONNECTOR_eDP;
 816                 break;
 817         default:
 818                 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
 819                 return ERR_PTR(-EINVAL);
 820         }
 821
 822         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 823         if (!nv_connector)
 824                 return ERR_PTR(-ENOMEM);
 825         nv_connector->dcb = dcb;
 826         connector = &nv_connector->base;
 827
 828         /* defaults, will get overridden in detect() */
 829         connector->interlace_allowed = false;
 830         connector->doublescan_allowed = false;
 831
 832         drm_connector_init(dev, connector, funcs, type);
 833         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 834
 835         /* Check if we need dithering enabled */
 836         if (dcb->type == DCB_CONNECTOR_LVDS) {
 837                 bool dummy, is_24bit = false;
 838
 839                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &is_24bit);
 840                 if (ret) {
 841                         NV_ERROR(dev, "Error parsing LVDS table, disabling "
 842                                  "LVDS\n");
 843                         goto fail;
 844                 }
 845
 846                 nv_connector->use_dithering = !is_24bit;
 847         }
 848
 849         /* Init DVI-I specific properties */
 850         if (dcb->type == DCB_CONNECTOR_DVI_I) {
 851                 drm_mode_create_dvi_i_properties(dev);
 852                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 853                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 854         }
 855
 856         switch (dcb->type) {
 857         case DCB_CONNECTOR_VGA:
 858                 if (dev_priv->card_type >= NV_50) {
 859                         drm_connector_attach_property(connector,
 860                                         dev->mode_config.scaling_mode_property,
 861                                         nv_connector->scaling_mode);
 862                 }
 863                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 864                 /* fall-through */
 865         case DCB_CONNECTOR_TV_0:
 866         case DCB_CONNECTOR_TV_1:
 867         case DCB_CONNECTOR_TV_3:
 868                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 869                 break;
 870         default:
 871                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 872
 873                 drm_connector_attach_property(connector,
 874                                 dev->mode_config.scaling_mode_property,
 875                                 nv_connector->scaling_mode);
 876                 drm_connector_attach_property(connector,
 877                                 dev->mode_config.dithering_mode_property,
 878                                 nv_connector->use_dithering ?
 879                                 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 880
 881                 if (dcb->type != DCB_CONNECTOR_LVDS) {
 882                         if (dev_priv->card_type >= NV_50)
 883                                 connector->polled = DRM_CONNECTOR_POLL_HPD;
 884                         else
 885                                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 886                 }
 887                 break;
 888         }
 889
 890         if (pgpio->irq_register) {
 891                 pgpio->irq_register(dev, nv_connector->dcb->gpio_tag,
 892                                     nouveau_connector_hotplug, connector);
 893         }
 894
 895         drm_sysfs_connector_add(connector);
 896         dcb->drm = connector;
 897         return dcb->drm;
 898
 899 fail:
 900         drm_connector_cleanup(connector);
 901         kfree(connector);
 902         return ERR_PTR(ret);
 903
 904 }
 905
 906 static void
 907 nouveau_connector_hotplug(void *data, int plugged)
 908 {
 909         struct drm_connector *connector = data;
 910         struct drm_device *dev = connector->dev;
 911
 912         NV_INFO(dev, "%splugged %s\n", plugged ? "" : "un",
 913                 drm_get_connector_name(connector));
 914
 915         if (connector->encoder && connector->encoder->crtc &&
 916             connector->encoder->crtc->enabled) {
 917                 struct nouveau_encoder *nv_encoder = nouveau_encoder(connector->encoder);
 918                 struct drm_encoder_helper_funcs *helper =
 919                         connector->encoder->helper_private;
 920
 921                 if (nv_encoder->dcb->type == OUTPUT_DP) {
 922                         if (plugged)
 923                                 helper->dpms(connector->encoder, DRM_MODE_DPMS_ON);
 924                         else
 925                                 helper->dpms(connector->encoder, DRM_MODE_DPMS_OFF);
 926                 }
 927         }
 928
 929         drm_helper_hpd_irq_event(dev);
 930 }