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 <linux/pm_runtime.h>
  30 #include <linux/vga_switcheroo.h>
  31
  32 #include <drm/drm_atomic_helper.h>
  33 #include <drm/drm_edid.h>
  34 #include <drm/drm_crtc_helper.h>
  35 #include <drm/drm_probe_helper.h>
  36 #include <drm/drm_atomic.h>
  37
  38 #include "nouveau_reg.h"
  39 #include "nouveau_drv.h"
  40 #include "dispnv04/hw.h"
  41 #include "dispnv50/disp.h"
  42 #include "nouveau_acpi.h"
  43
  44 #include "nouveau_display.h"
  45 #include "nouveau_connector.h"
  46 #include "nouveau_encoder.h"
  47 #include "nouveau_crtc.h"
  48
  49 #include <nvif/class.h>
  50 #include <nvif/cl0046.h>
  51 #include <nvif/event.h>
  52
  53 struct drm_display_mode *
  54 nouveau_conn_native_mode(struct drm_connector *connector)
  55 {
  56         const struct drm_connector_helper_funcs *helper = connector->helper_private;
  57         struct nouveau_drm *drm = nouveau_drm(connector->dev);
  58         struct drm_device *dev = connector->dev;
  59         struct drm_display_mode *mode, *largest = NULL;
  60         int high_w = 0, high_h = 0, high_v = 0;
  61
  62         list_for_each_entry(mode, &connector->probed_modes, head) {
  63                 if (helper->mode_valid(connector, mode) != MODE_OK ||
  64                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
  65                         continue;
  66
  67                 /* Use preferred mode if there is one.. */
  68                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
  69                         NV_DEBUG(drm, "native mode from preferred\n");
  70                         return drm_mode_duplicate(dev, mode);
  71                 }
  72
  73                 /* Otherwise, take the resolution with the largest width, then
  74                  * height, then vertical refresh
  75                  */
  76                 if (mode->hdisplay < high_w)
  77                         continue;
  78
  79                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
  80                         continue;
  81
  82                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
  83                     drm_mode_vrefresh(mode) < high_v)
  84                         continue;
  85
  86                 high_w = mode->hdisplay;
  87                 high_h = mode->vdisplay;
  88                 high_v = drm_mode_vrefresh(mode);
  89                 largest = mode;
  90         }
  91
  92         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
  93                       high_w, high_h, high_v);
  94         return largest ? drm_mode_duplicate(dev, largest) : NULL;
  95 }
  96
  97 int
  98 nouveau_conn_atomic_get_property(struct drm_connector *connector,
  99                                  const struct drm_connector_state *state,
 100                                  struct drm_property *property, u64 *val)
 101 {
 102         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 103         struct nouveau_display *disp = nouveau_display(connector->dev);
 104         struct drm_device *dev = connector->dev;
 105
 106         if (property == dev->mode_config.scaling_mode_property)
 107                 *val = asyc->scaler.mode;
 108         else if (property == disp->underscan_property)
 109                 *val = asyc->scaler.underscan.mode;
 110         else if (property == disp->underscan_hborder_property)
 111                 *val = asyc->scaler.underscan.hborder;
 112         else if (property == disp->underscan_vborder_property)
 113                 *val = asyc->scaler.underscan.vborder;
 114         else if (property == disp->dithering_mode)
 115                 *val = asyc->dither.mode;
 116         else if (property == disp->dithering_depth)
 117                 *val = asyc->dither.depth;
 118         else if (property == disp->vibrant_hue_property)
 119                 *val = asyc->procamp.vibrant_hue;
 120         else if (property == disp->color_vibrance_property)
 121                 *val = asyc->procamp.color_vibrance;
 122         else
 123                 return -EINVAL;
 124
 125         return 0;
 126 }
 127
 128 int
 129 nouveau_conn_atomic_set_property(struct drm_connector *connector,
 130                                  struct drm_connector_state *state,
 131                                  struct drm_property *property, u64 val)
 132 {
 133         struct drm_device *dev = connector->dev;
 134         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 135         struct nouveau_display *disp = nouveau_display(dev);
 136
 137         if (property == dev->mode_config.scaling_mode_property) {
 138                 switch (val) {
 139                 case DRM_MODE_SCALE_NONE:
 140                         /* We allow 'None' for EDID modes, even on a fixed
 141                          * panel (some exist with support for lower refresh
 142                          * rates, which people might want to use for power-
 143                          * saving purposes).
 144                          *
 145                          * Non-EDID modes will force the use of GPU scaling
 146                          * to the native mode regardless of this setting.
 147                          */
 148                         switch (connector->connector_type) {
 149                         case DRM_MODE_CONNECTOR_LVDS:
 150                         case DRM_MODE_CONNECTOR_eDP:
 151                                 /* ... except prior to G80, where the code
 152                                  * doesn't support such things.
 153                                  */
 154                                 if (disp->disp.object.oclass < NV50_DISP)
 155                                         return -EINVAL;
 156                                 break;
 157                         default:
 158                                 break;
 159                         }
 160                 case DRM_MODE_SCALE_FULLSCREEN:
 161                 case DRM_MODE_SCALE_CENTER:
 162                 case DRM_MODE_SCALE_ASPECT:
 163                         break;
 164                 default:
 165                         return -EINVAL;
 166                 }
 167
 168                 if (asyc->scaler.mode != val) {
 169                         asyc->scaler.mode = val;
 170                         asyc->set.scaler = true;
 171                 }
 172         } else
 173         if (property == disp->underscan_property) {
 174                 if (asyc->scaler.underscan.mode != val) {
 175                         asyc->scaler.underscan.mode = val;
 176                         asyc->set.scaler = true;
 177                 }
 178         } else
 179         if (property == disp->underscan_hborder_property) {
 180                 if (asyc->scaler.underscan.hborder != val) {
 181                         asyc->scaler.underscan.hborder = val;
 182                         asyc->set.scaler = true;
 183                 }
 184         } else
 185         if (property == disp->underscan_vborder_property) {
 186                 if (asyc->scaler.underscan.vborder != val) {
 187                         asyc->scaler.underscan.vborder = val;
 188                         asyc->set.scaler = true;
 189                 }
 190         } else
 191         if (property == disp->dithering_mode) {
 192                 if (asyc->dither.mode != val) {
 193                         asyc->dither.mode = val;
 194                         asyc->set.dither = true;
 195                 }
 196         } else
 197         if (property == disp->dithering_depth) {
 198                 if (asyc->dither.mode != val) {
 199                         asyc->dither.depth = val;
 200                         asyc->set.dither = true;
 201                 }
 202         } else
 203         if (property == disp->vibrant_hue_property) {
 204                 if (asyc->procamp.vibrant_hue != val) {
 205                         asyc->procamp.vibrant_hue = val;
 206                         asyc->set.procamp = true;
 207                 }
 208         } else
 209         if (property == disp->color_vibrance_property) {
 210                 if (asyc->procamp.color_vibrance != val) {
 211                         asyc->procamp.color_vibrance = val;
 212                         asyc->set.procamp = true;
 213                 }
 214         } else {
 215                 return -EINVAL;
 216         }
 217
 218         return 0;
 219 }
 220
 221 void
 222 nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 223                                   struct drm_connector_state *state)
 224 {
 225         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 226         __drm_atomic_helper_connector_destroy_state(&asyc->state);
 227         kfree(asyc);
 228 }
 229
 230 struct drm_connector_state *
 231 nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 232 {
 233         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 234         struct nouveau_conn_atom *asyc;
 235         if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 236                 return NULL;
 237         __drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 238         asyc->dither = armc->dither;
 239         asyc->scaler = armc->scaler;
 240         asyc->procamp = armc->procamp;
 241         asyc->set.mask = 0;
 242         return &asyc->state;
 243 }
 244
 245 void
 246 nouveau_conn_reset(struct drm_connector *connector)
 247 {
 248         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 249         struct nouveau_conn_atom *asyc;
 250
 251         if (drm_drv_uses_atomic_modeset(connector->dev)) {
 252                 if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 253                         return;
 254
 255                 if (connector->state)
 256                         nouveau_conn_atomic_destroy_state(connector,
 257                                                           connector->state);
 258
 259                 __drm_atomic_helper_connector_reset(connector, &asyc->state);
 260         } else {
 261                 asyc = &nv_connector->properties_state;
 262         }
 263
 264         asyc->dither.mode = DITHERING_MODE_AUTO;
 265         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 266         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 267         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 268         asyc->procamp.color_vibrance = 150;
 269         asyc->procamp.vibrant_hue = 90;
 270
 271         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 272                 switch (connector->connector_type) {
 273                 case DRM_MODE_CONNECTOR_LVDS:
 274                         /* See note in nouveau_conn_atomic_set_property(). */
 275                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 276                         break;
 277                 default:
 278                         break;
 279                 }
 280         }
 281 }
 282
 283 void
 284 nouveau_conn_attach_properties(struct drm_connector *connector)
 285 {
 286         struct drm_device *dev = connector->dev;
 287         struct nouveau_display *disp = nouveau_display(dev);
 288         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 289         struct nouveau_conn_atom *armc;
 290
 291         if (drm_drv_uses_atomic_modeset(connector->dev))
 292                 armc = nouveau_conn_atom(connector->state);
 293         else
 294                 armc = &nv_connector->properties_state;
 295
 296         /* Init DVI-I specific properties. */
 297         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 298                 drm_object_attach_property(&connector->base, dev->mode_config.
 299                                            dvi_i_subconnector_property, 0);
 300
 301         /* Add overscan compensation options to digital outputs. */
 302         if (disp->underscan_property &&
 303             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 304              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 305              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 306              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 307                 drm_object_attach_property(&connector->base,
 308                                            disp->underscan_property,
 309                                            UNDERSCAN_OFF);
 310                 drm_object_attach_property(&connector->base,
 311                                            disp->underscan_hborder_property, 0);
 312                 drm_object_attach_property(&connector->base,
 313                                            disp->underscan_vborder_property, 0);
 314         }
 315
 316         /* Add hue and saturation options. */
 317         if (disp->vibrant_hue_property)
 318                 drm_object_attach_property(&connector->base,
 319                                            disp->vibrant_hue_property,
 320                                            armc->procamp.vibrant_hue);
 321         if (disp->color_vibrance_property)
 322                 drm_object_attach_property(&connector->base,
 323                                            disp->color_vibrance_property,
 324                                            armc->procamp.color_vibrance);
 325
 326         /* Scaling mode property. */
 327         switch (connector->connector_type) {
 328         case DRM_MODE_CONNECTOR_TV:
 329                 break;
 330         case DRM_MODE_CONNECTOR_VGA:
 331                 if (disp->disp.object.oclass < NV50_DISP)
 332                         break; /* Can only scale on DFPs. */
 333                 /* Fall-through. */
 334         default:
 335                 drm_object_attach_property(&connector->base, dev->mode_config.
 336                                            scaling_mode_property,
 337                                            armc->scaler.mode);
 338                 break;
 339         }
 340
 341         /* Dithering properties. */
 342         switch (connector->connector_type) {
 343         case DRM_MODE_CONNECTOR_TV:
 344         case DRM_MODE_CONNECTOR_VGA:
 345                 break;
 346         default:
 347                 if (disp->dithering_mode) {
 348                         drm_object_attach_property(&connector->base,
 349                                                    disp->dithering_mode,
 350                                                    armc->dither.mode);
 351                 }
 352                 if (disp->dithering_depth) {
 353                         drm_object_attach_property(&connector->base,
 354                                                    disp->dithering_depth,
 355                                                    armc->dither.depth);
 356                 }
 357                 break;
 358         }
 359 }
 360
 361 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 362 int nouveau_tv_disable = 0;
 363 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 364
 365 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 366 int nouveau_ignorelid = 0;
 367 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 368
 369 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 370 int nouveau_duallink = 1;
 371 module_param_named(duallink, nouveau_duallink, int, 0400);
 372
 373 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 374 int nouveau_hdmimhz = 0;
 375 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 376
 377 struct nouveau_encoder *
 378 find_encoder(struct drm_connector *connector, int type)
 379 {
 380         struct nouveau_encoder *nv_encoder;
 381         struct drm_encoder *enc;
 382
 383         drm_connector_for_each_possible_encoder(connector, enc) {
 384                 nv_encoder = nouveau_encoder(enc);
 385
 386                 if (type == DCB_OUTPUT_ANY ||
 387                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
 388                         return nv_encoder;
 389         }
 390
 391         return NULL;
 392 }
 393
 394 struct nouveau_connector *
 395 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
 396 {
 397         struct drm_device *dev = to_drm_encoder(encoder)->dev;
 398         struct drm_connector *drm_connector;
 399
 400         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 401                 if (drm_connector->encoder == to_drm_encoder(encoder))
 402                         return nouveau_connector(drm_connector);
 403         }
 404
 405         return NULL;
 406 }
 407
 408 static void
 409 nouveau_connector_destroy(struct drm_connector *connector)
 410 {
 411         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 412         nvif_notify_fini(&nv_connector->hpd);
 413         kfree(nv_connector->edid);
 414         drm_connector_unregister(connector);
 415         drm_connector_cleanup(connector);
 416         if (nv_connector->aux.transfer) {
 417                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 418                 drm_dp_aux_unregister(&nv_connector->aux);
 419                 kfree(nv_connector->aux.name);
 420         }
 421         kfree(connector);
 422 }
 423
 424 static struct nouveau_encoder *
 425 nouveau_connector_ddc_detect(struct drm_connector *connector)
 426 {
 427         struct drm_device *dev = connector->dev;
 428         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 429         struct drm_encoder *encoder;
 430         int ret;
 431         bool switcheroo_ddc = false;
 432
 433         drm_connector_for_each_possible_encoder(connector, encoder) {
 434                 nv_encoder = nouveau_encoder(encoder);
 435
 436                 switch (nv_encoder->dcb->type) {
 437                 case DCB_OUTPUT_DP:
 438                         ret = nouveau_dp_detect(nv_encoder);
 439                         if (ret == NOUVEAU_DP_MST)
 440                                 return NULL;
 441                         else if (ret == NOUVEAU_DP_SST)
 442                                 found = nv_encoder;
 443
 444                         break;
 445                 case DCB_OUTPUT_LVDS:
 446                         switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 447                                             VGA_SWITCHEROO_CAN_SWITCH_DDC);
 448                 /* fall-through */
 449                 default:
 450                         if (!nv_encoder->i2c)
 451                                 break;
 452
 453                         if (switcheroo_ddc)
 454                                 vga_switcheroo_lock_ddc(dev->pdev);
 455                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 456                                 found = nv_encoder;
 457                         if (switcheroo_ddc)
 458                                 vga_switcheroo_unlock_ddc(dev->pdev);
 459
 460                         break;
 461                 }
 462                 if (found)
 463                         break;
 464         }
 465
 466         return found;
 467 }
 468
 469 static struct nouveau_encoder *
 470 nouveau_connector_of_detect(struct drm_connector *connector)
 471 {
 472 #ifdef __powerpc__
 473         struct drm_device *dev = connector->dev;
 474         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 475         struct nouveau_encoder *nv_encoder;
 476         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 477
 478         if (!dn ||
 479             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 480               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 481                 return NULL;
 482
 483         for_each_child_of_node(dn, cn) {
 484                 const char *name = of_get_property(cn, "name", NULL);
 485                 const void *edid = of_get_property(cn, "EDID", NULL);
 486                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 487
 488                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 489                         nv_connector->edid =
 490                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 491                         of_node_put(cn);
 492                         return nv_encoder;
 493                 }
 494         }
 495 #endif
 496         return NULL;
 497 }
 498
 499 static void
 500 nouveau_connector_set_encoder(struct drm_connector *connector,
 501                               struct nouveau_encoder *nv_encoder)
 502 {
 503         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 504         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 505         struct drm_device *dev = connector->dev;
 506
 507         if (nv_connector->detected_encoder == nv_encoder)
 508                 return;
 509         nv_connector->detected_encoder = nv_encoder;
 510
 511         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 512                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 513                         connector->interlace_allowed =
 514                                 nv_encoder->caps.dp_interlace;
 515                 else
 516                         connector->interlace_allowed = true;
 517                 connector->doublescan_allowed = true;
 518         } else
 519         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 520             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 521                 connector->doublescan_allowed = false;
 522                 connector->interlace_allowed = false;
 523         } else {
 524                 connector->doublescan_allowed = true;
 525                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 526                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 527                      (dev->pdev->device & 0x0ff0) != 0x0100 &&
 528                      (dev->pdev->device & 0x0ff0) != 0x0150))
 529                         /* HW is broken */
 530                         connector->interlace_allowed = false;
 531                 else
 532                         connector->interlace_allowed = true;
 533         }
 534
 535         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 536                 drm_object_property_set_value(&connector->base,
 537                         dev->mode_config.dvi_i_subconnector_property,
 538                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 539                         DRM_MODE_SUBCONNECTOR_DVID :
 540                         DRM_MODE_SUBCONNECTOR_DVIA);
 541         }
 542 }
 543
 544 static enum drm_connector_status
 545 nouveau_connector_detect(struct drm_connector *connector, bool force)
 546 {
 547         struct drm_device *dev = connector->dev;
 548         struct nouveau_drm *drm = nouveau_drm(dev);
 549         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 550         struct nouveau_encoder *nv_encoder = NULL;
 551         struct nouveau_encoder *nv_partner;
 552         struct i2c_adapter *i2c;
 553         int type;
 554         int ret;
 555         enum drm_connector_status conn_status = connector_status_disconnected;
 556
 557         /* Cleanup the previous EDID block. */
 558         if (nv_connector->edid) {
 559                 drm_connector_update_edid_property(connector, NULL);
 560                 kfree(nv_connector->edid);
 561                 nv_connector->edid = NULL;
 562         }
 563
 564         /* Outputs are only polled while runtime active, so resuming the
 565          * device here is unnecessary (and would deadlock upon runtime suspend
 566          * because it waits for polling to finish). We do however, want to
 567          * prevent the autosuspend timer from elapsing during this operation
 568          * if possible.
 569          */
 570         if (drm_kms_helper_is_poll_worker()) {
 571                 pm_runtime_get_noresume(dev->dev);
 572         } else {
 573                 ret = pm_runtime_get_sync(dev->dev);
 574                 if (ret < 0 && ret != -EACCES)
 575                         return conn_status;
 576         }
 577
 578         nv_encoder = nouveau_connector_ddc_detect(connector);
 579         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 580                 if ((vga_switcheroo_handler_flags() &
 581                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 582                     nv_connector->type == DCB_CONNECTOR_LVDS)
 583                         nv_connector->edid = drm_get_edid_switcheroo(connector,
 584                                                                      i2c);
 585                 else
 586                         nv_connector->edid = drm_get_edid(connector, i2c);
 587
 588                 drm_connector_update_edid_property(connector,
 589                                                         nv_connector->edid);
 590                 if (!nv_connector->edid) {
 591                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 592                                  connector->name);
 593                         goto detect_analog;
 594                 }
 595
 596                 /* Override encoder type for DVI-I based on whether EDID
 597                  * says the display is digital or analog, both use the
 598                  * same i2c channel so the value returned from ddc_detect
 599                  * isn't necessarily correct.
 600                  */
 601                 nv_partner = NULL;
 602                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 603                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 604                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 605                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 606
 607                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 608                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 609                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 610                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 611                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 612                                 type = DCB_OUTPUT_TMDS;
 613                         else
 614                                 type = DCB_OUTPUT_ANALOG;
 615
 616                         nv_encoder = find_encoder(connector, type);
 617                 }
 618
 619                 nouveau_connector_set_encoder(connector, nv_encoder);
 620                 conn_status = connector_status_connected;
 621                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 622                 goto out;
 623         }
 624
 625         nv_encoder = nouveau_connector_of_detect(connector);
 626         if (nv_encoder) {
 627                 nouveau_connector_set_encoder(connector, nv_encoder);
 628                 conn_status = connector_status_connected;
 629                 goto out;
 630         }
 631
 632 detect_analog:
 633         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 634         if (!nv_encoder && !nouveau_tv_disable)
 635                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 636         if (nv_encoder && force) {
 637                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 638                 const struct drm_encoder_helper_funcs *helper =
 639                                                 encoder->helper_private;
 640
 641                 if (helper->detect(encoder, connector) ==
 642                                                 connector_status_connected) {
 643                         nouveau_connector_set_encoder(connector, nv_encoder);
 644                         conn_status = connector_status_connected;
 645                         goto out;
 646                 }
 647
 648         }
 649
 650  out:
 651
 652         pm_runtime_mark_last_busy(dev->dev);
 653         pm_runtime_put_autosuspend(dev->dev);
 654
 655         return conn_status;
 656 }
 657
 658 static enum drm_connector_status
 659 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 660 {
 661         struct drm_device *dev = connector->dev;
 662         struct nouveau_drm *drm = nouveau_drm(dev);
 663         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 664         struct nouveau_encoder *nv_encoder = NULL;
 665         enum drm_connector_status status = connector_status_disconnected;
 666
 667         /* Cleanup the previous EDID block. */
 668         if (nv_connector->edid) {
 669                 drm_connector_update_edid_property(connector, NULL);
 670                 kfree(nv_connector->edid);
 671                 nv_connector->edid = NULL;
 672         }
 673
 674         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 675         if (!nv_encoder)
 676                 return connector_status_disconnected;
 677
 678         /* Try retrieving EDID via DDC */
 679         if (!drm->vbios.fp_no_ddc) {
 680                 status = nouveau_connector_detect(connector, force);
 681                 if (status == connector_status_connected)
 682                         goto out;
 683         }
 684
 685         /* On some laptops (Sony, i'm looking at you) there appears to
 686          * be no direct way of accessing the panel's EDID.  The only
 687          * option available to us appears to be to ask ACPI for help..
 688          *
 689          * It's important this check's before trying straps, one of the
 690          * said manufacturer's laptops are configured in such a way
 691          * the nouveau decides an entry in the VBIOS FP mode table is
 692          * valid - it's not (rh#613284)
 693          */
 694         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 695                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 696                         status = connector_status_connected;
 697                         goto out;
 698                 }
 699         }
 700
 701         /* If no EDID found above, and the VBIOS indicates a hardcoded
 702          * modeline is avalilable for the panel, set it as the panel's
 703          * native mode and exit.
 704          */
 705         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 706             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 707                 status = connector_status_connected;
 708                 goto out;
 709         }
 710
 711         /* Still nothing, some VBIOS images have a hardcoded EDID block
 712          * stored for the panel stored in them.
 713          */
 714         if (!drm->vbios.fp_no_ddc) {
 715                 struct edid *edid =
 716                         (struct edid *)nouveau_bios_embedded_edid(dev);
 717                 if (edid) {
 718                         nv_connector->edid =
 719                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 720                         if (nv_connector->edid)
 721                                 status = connector_status_connected;
 722                 }
 723         }
 724
 725 out:
 726 #if defined(CONFIG_ACPI_BUTTON) || \
 727         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 728         if (status == connector_status_connected &&
 729             !nouveau_ignorelid && !acpi_lid_open())
 730                 status = connector_status_unknown;
 731 #endif
 732
 733         drm_connector_update_edid_property(connector, nv_connector->edid);
 734         nouveau_connector_set_encoder(connector, nv_encoder);
 735         return status;
 736 }
 737
 738 static void
 739 nouveau_connector_force(struct drm_connector *connector)
 740 {
 741         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 742         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 743         struct nouveau_encoder *nv_encoder;
 744         int type;
 745
 746         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 747                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 748                         type = DCB_OUTPUT_TMDS;
 749                 else
 750                         type = DCB_OUTPUT_ANALOG;
 751         } else
 752                 type = DCB_OUTPUT_ANY;
 753
 754         nv_encoder = find_encoder(connector, type);
 755         if (!nv_encoder) {
 756                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 757                          connector->name);
 758                 connector->status = connector_status_disconnected;
 759                 return;
 760         }
 761
 762         nouveau_connector_set_encoder(connector, nv_encoder);
 763 }
 764
 765 static int
 766 nouveau_connector_set_property(struct drm_connector *connector,
 767                                struct drm_property *property, uint64_t value)
 768 {
 769         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 770         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 771         struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
 772         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 773         int ret;
 774
 775         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 776                                                     &asyc->state,
 777                                                     property, value);
 778         if (ret) {
 779                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 780                         return get_slave_funcs(encoder)->set_property(
 781                                 encoder, connector, property, value);
 782                 return ret;
 783         }
 784
 785         nv_connector->scaling_mode = asyc->scaler.mode;
 786         nv_connector->dithering_mode = asyc->dither.mode;
 787
 788         if (connector->encoder && connector->encoder->crtc) {
 789                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 790                                               &connector->encoder->crtc->mode,
 791                                                connector->encoder->crtc->x,
 792                                                connector->encoder->crtc->y,
 793                                                NULL);
 794                 if (!ret)
 795                         return -EINVAL;
 796         }
 797
 798         return 0;
 799 }
 800
 801 struct moderec {
 802         int hdisplay;
 803         int vdisplay;
 804 };
 805
 806 static struct moderec scaler_modes[] = {
 807         { 1920, 1200 },
 808         { 1920, 1080 },
 809         { 1680, 1050 },
 810         { 1600, 1200 },
 811         { 1400, 1050 },
 812         { 1280, 1024 },
 813         { 1280, 960 },
 814         { 1152, 864 },
 815         { 1024, 768 },
 816         { 800, 600 },
 817         { 720, 400 },
 818         { 640, 480 },
 819         { 640, 400 },
 820         { 640, 350 },
 821         {}
 822 };
 823
 824 static int
 825 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 826 {
 827         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 828         struct drm_display_mode *native = nv_connector->native_mode, *m;
 829         struct drm_device *dev = connector->dev;
 830         struct moderec *mode = &scaler_modes[0];
 831         int modes = 0;
 832
 833         if (!native)
 834                 return 0;
 835
 836         while (mode->hdisplay) {
 837                 if (mode->hdisplay <= native->hdisplay &&
 838                     mode->vdisplay <= native->vdisplay &&
 839                     (mode->hdisplay != native->hdisplay ||
 840                      mode->vdisplay != native->vdisplay)) {
 841                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 842                                          drm_mode_vrefresh(native), false,
 843                                          false, false);
 844                         if (!m)
 845                                 continue;
 846
 847                         drm_mode_probed_add(connector, m);
 848                         modes++;
 849                 }
 850
 851                 mode++;
 852         }
 853
 854         return modes;
 855 }
 856
 857 static void
 858 nouveau_connector_detect_depth(struct drm_connector *connector)
 859 {
 860         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 861         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 862         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 863         struct nvbios *bios = &drm->vbios;
 864         struct drm_display_mode *mode = nv_connector->native_mode;
 865         bool duallink;
 866
 867         /* if the edid is feeling nice enough to provide this info, use it */
 868         if (nv_connector->edid && connector->display_info.bpc)
 869                 return;
 870
 871         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 872         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 873                 connector->display_info.bpc = 6;
 874                 return;
 875         }
 876
 877         /* we're out of options unless we're LVDS, default to 8bpc */
 878         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 879                 connector->display_info.bpc = 8;
 880                 return;
 881         }
 882
 883         connector->display_info.bpc = 6;
 884
 885         /* LVDS: panel straps */
 886         if (bios->fp_no_ddc) {
 887                 if (bios->fp.if_is_24bit)
 888                         connector->display_info.bpc = 8;
 889                 return;
 890         }
 891
 892         /* LVDS: DDC panel, need to first determine the number of links to
 893          * know which if_is_24bit flag to check...
 894          */
 895         if (nv_connector->edid &&
 896             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 897                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 898         else
 899                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 900
 901         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 902             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 903                 connector->display_info.bpc = 8;
 904 }
 905
 906 static int
 907 nouveau_connector_late_register(struct drm_connector *connector)
 908 {
 909         int ret;
 910
 911         ret = nouveau_backlight_init(connector);
 912
 913         return ret;
 914 }
 915
 916 static void
 917 nouveau_connector_early_unregister(struct drm_connector *connector)
 918 {
 919         nouveau_backlight_fini(connector);
 920 }
 921
 922 static int
 923 nouveau_connector_get_modes(struct drm_connector *connector)
 924 {
 925         struct drm_device *dev = connector->dev;
 926         struct nouveau_drm *drm = nouveau_drm(dev);
 927         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 928         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 929         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 930         int ret = 0;
 931
 932         /* destroy the native mode, the attached monitor could have changed.
 933          */
 934         if (nv_connector->native_mode) {
 935                 drm_mode_destroy(dev, nv_connector->native_mode);
 936                 nv_connector->native_mode = NULL;
 937         }
 938
 939         if (nv_connector->edid)
 940                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 941         else
 942         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 943             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 944              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 945                 struct drm_display_mode mode;
 946
 947                 nouveau_bios_fp_mode(dev, &mode);
 948                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 949         }
 950
 951         /* Determine display colour depth for everything except LVDS now,
 952          * DP requires this before mode_valid() is called.
 953          */
 954         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 955                 nouveau_connector_detect_depth(connector);
 956
 957         /* Find the native mode if this is a digital panel, if we didn't
 958          * find any modes through DDC previously add the native mode to
 959          * the list of modes.
 960          */
 961         if (!nv_connector->native_mode)
 962                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 963         if (ret == 0 && nv_connector->native_mode) {
 964                 struct drm_display_mode *mode;
 965
 966                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 967                 drm_mode_probed_add(connector, mode);
 968                 ret = 1;
 969         }
 970
 971         /* Determine LVDS colour depth, must happen after determining
 972          * "native" mode as some VBIOS tables require us to use the
 973          * pixel clock as part of the lookup...
 974          */
 975         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 976                 nouveau_connector_detect_depth(connector);
 977
 978         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 979                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 980
 981         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 982             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 983             nv_connector->type == DCB_CONNECTOR_eDP)
 984                 ret += nouveau_connector_scaler_modes_add(connector);
 985
 986         return ret;
 987 }
 988
 989 static unsigned
 990 get_tmds_link_bandwidth(struct drm_connector *connector)
 991 {
 992         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 993         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 994         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 995         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 996         struct drm_display_info *info = NULL;
 997         unsigned duallink_scale =
 998                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
 999
1000         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1001                 info = &nv_connector->base.display_info;
1002                 duallink_scale = 1;
1003         }
1004
1005         if (info) {
1006                 if (nouveau_hdmimhz > 0)
1007                         return nouveau_hdmimhz * 1000;
1008                 /* Note: these limits are conservative, some Fermi's
1009                  * can do 297 MHz. Unclear how this can be determined.
1010                  */
1011                 if (drm->client.device.info.chipset >= 0x120) {
1012                         const int max_tmds_clock =
1013                                 info->hdmi.scdc.scrambling.supported ?
1014                                 594000 : 340000;
1015                         return info->max_tmds_clock ?
1016                                 min(info->max_tmds_clock, max_tmds_clock) :
1017                                 max_tmds_clock;
1018                 }
1019                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1020                         return 297000;
1021                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1022                         return 225000;
1023         }
1024
1025         if (dcb->location != DCB_LOC_ON_CHIP ||
1026             drm->client.device.info.chipset >= 0x46)
1027                 return 165000 * duallink_scale;
1028         else if (drm->client.device.info.chipset >= 0x40)
1029                 return 155000 * duallink_scale;
1030         else if (drm->client.device.info.chipset >= 0x18)
1031                 return 135000 * duallink_scale;
1032         else
1033                 return 112000 * duallink_scale;
1034 }
1035
1036 enum drm_mode_status
1037 nouveau_conn_mode_clock_valid(const struct drm_display_mode *mode,
1038                               const unsigned min_clock,
1039                               const unsigned max_clock,
1040                               unsigned int *clock_out)
1041 {
1042         unsigned int clock = mode->clock;
1043
1044         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) ==
1045             DRM_MODE_FLAG_3D_FRAME_PACKING)
1046                 clock *= 2;
1047
1048         if (clock < min_clock)
1049                 return MODE_CLOCK_LOW;
1050         if (clock > max_clock)
1051                 return MODE_CLOCK_HIGH;
1052
1053         if (clock_out)
1054                 *clock_out = clock;
1055
1056         return MODE_OK;
1057 }
1058
1059 static enum drm_mode_status
1060 nouveau_connector_mode_valid(struct drm_connector *connector,
1061                              struct drm_display_mode *mode)
1062 {
1063         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1064         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1065         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1066         unsigned min_clock = 25000, max_clock = min_clock;
1067
1068         switch (nv_encoder->dcb->type) {
1069         case DCB_OUTPUT_LVDS:
1070                 if (nv_connector->native_mode &&
1071                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1072                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1073                         return MODE_PANEL;
1074
1075                 min_clock = 0;
1076                 max_clock = 400000;
1077                 break;
1078         case DCB_OUTPUT_TMDS:
1079                 max_clock = get_tmds_link_bandwidth(connector);
1080                 break;
1081         case DCB_OUTPUT_ANALOG:
1082                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1083                 if (!max_clock)
1084                         max_clock = 350000;
1085                 break;
1086         case DCB_OUTPUT_TV:
1087                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1088         case DCB_OUTPUT_DP:
1089                 return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1090         default:
1091                 BUG();
1092                 return MODE_BAD;
1093         }
1094
1095         return nouveau_conn_mode_clock_valid(mode, min_clock, max_clock,
1096                                              NULL);
1097 }
1098
1099 static struct drm_encoder *
1100 nouveau_connector_best_encoder(struct drm_connector *connector)
1101 {
1102         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1103
1104         if (nv_connector->detected_encoder)
1105                 return to_drm_encoder(nv_connector->detected_encoder);
1106
1107         return NULL;
1108 }
1109
1110 static const struct drm_connector_helper_funcs
1111 nouveau_connector_helper_funcs = {
1112         .get_modes = nouveau_connector_get_modes,
1113         .mode_valid = nouveau_connector_mode_valid,
1114         .best_encoder = nouveau_connector_best_encoder,
1115 };
1116
1117 static const struct drm_connector_funcs
1118 nouveau_connector_funcs = {
1119         .dpms = drm_helper_connector_dpms,
1120         .reset = nouveau_conn_reset,
1121         .detect = nouveau_connector_detect,
1122         .force = nouveau_connector_force,
1123         .fill_modes = drm_helper_probe_single_connector_modes,
1124         .set_property = nouveau_connector_set_property,
1125         .destroy = nouveau_connector_destroy,
1126         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1127         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1128         .atomic_set_property = nouveau_conn_atomic_set_property,
1129         .atomic_get_property = nouveau_conn_atomic_get_property,
1130         .late_register = nouveau_connector_late_register,
1131         .early_unregister = nouveau_connector_early_unregister,
1132 };
1133
1134 static const struct drm_connector_funcs
1135 nouveau_connector_funcs_lvds = {
1136         .dpms = drm_helper_connector_dpms,
1137         .reset = nouveau_conn_reset,
1138         .detect = nouveau_connector_detect_lvds,
1139         .force = nouveau_connector_force,
1140         .fill_modes = drm_helper_probe_single_connector_modes,
1141         .set_property = nouveau_connector_set_property,
1142         .destroy = nouveau_connector_destroy,
1143         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1144         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1145         .atomic_set_property = nouveau_conn_atomic_set_property,
1146         .atomic_get_property = nouveau_conn_atomic_get_property,
1147         .late_register = nouveau_connector_late_register,
1148         .early_unregister = nouveau_connector_early_unregister,
1149 };
1150
1151 static int
1152 nouveau_connector_hotplug(struct nvif_notify *notify)
1153 {
1154         struct nouveau_connector *nv_connector =
1155                 container_of(notify, typeof(*nv_connector), hpd);
1156         struct drm_connector *connector = &nv_connector->base;
1157         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1158         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1159         const char *name = connector->name;
1160         struct nouveau_encoder *nv_encoder;
1161         int ret;
1162         bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1163
1164         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1165                 NV_DEBUG(drm, "service %s\n", name);
1166                 drm_dp_cec_irq(&nv_connector->aux);
1167                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1168                         nv50_mstm_service(nv_encoder->dp.mstm);
1169
1170                 return NVIF_NOTIFY_KEEP;
1171         }
1172
1173         ret = pm_runtime_get(drm->dev->dev);
1174         if (ret == 0) {
1175                 /* We can't block here if there's a pending PM request
1176                  * running, as we'll deadlock nouveau_display_fini() when it
1177                  * calls nvif_put() on our nvif_notify struct. So, simply
1178                  * defer the hotplug event until the device finishes resuming
1179                  */
1180                 NV_DEBUG(drm, "Deferring HPD on %s until runtime resume\n",
1181                          name);
1182                 schedule_work(&drm->hpd_work);
1183
1184                 pm_runtime_put_noidle(drm->dev->dev);
1185                 return NVIF_NOTIFY_KEEP;
1186         } else if (ret != 1 && ret != -EACCES) {
1187                 NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
1188                         name, ret);
1189                 return NVIF_NOTIFY_DROP;
1190         }
1191
1192         if (!plugged)
1193                 drm_dp_cec_unset_edid(&nv_connector->aux);
1194         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1195         if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1196                 if (!plugged)
1197                         nv50_mstm_remove(nv_encoder->dp.mstm);
1198         }
1199
1200         drm_helper_hpd_irq_event(connector->dev);
1201
1202         pm_runtime_mark_last_busy(drm->dev->dev);
1203         pm_runtime_put_autosuspend(drm->dev->dev);
1204         return NVIF_NOTIFY_KEEP;
1205 }
1206
1207 static ssize_t
1208 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1209 {
1210         struct nouveau_connector *nv_connector =
1211                 container_of(obj, typeof(*nv_connector), aux);
1212         struct nouveau_encoder *nv_encoder;
1213         struct nvkm_i2c_aux *aux;
1214         u8 size = msg->size;
1215         int ret;
1216
1217         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1218         if (!nv_encoder || !(aux = nv_encoder->aux))
1219                 return -ENODEV;
1220         if (WARN_ON(msg->size > 16))
1221                 return -E2BIG;
1222
1223         ret = nvkm_i2c_aux_acquire(aux);
1224         if (ret)
1225                 return ret;
1226
1227         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1228                                 msg->buffer, &size);
1229         nvkm_i2c_aux_release(aux);
1230         if (ret >= 0) {
1231                 msg->reply = ret;
1232                 return size;
1233         }
1234
1235         return ret;
1236 }
1237
1238 static int
1239 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1240 {
1241         switch (dcb) {
1242         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1243         case DCB_CONNECTOR_TV_0     :
1244         case DCB_CONNECTOR_TV_1     :
1245         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1246         case DCB_CONNECTOR_DMS59_0  :
1247         case DCB_CONNECTOR_DMS59_1  :
1248         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1249         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1250         case DCB_CONNECTOR_LVDS     :
1251         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1252         case DCB_CONNECTOR_DMS59_DP0:
1253         case DCB_CONNECTOR_DMS59_DP1:
1254         case DCB_CONNECTOR_DP       :
1255         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1256         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1257         case DCB_CONNECTOR_HDMI_0   :
1258         case DCB_CONNECTOR_HDMI_1   :
1259         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1260         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1261         default:
1262                 break;
1263         }
1264
1265         return DRM_MODE_CONNECTOR_Unknown;
1266 }
1267
1268 struct drm_connector *
1269 nouveau_connector_create(struct drm_device *dev,
1270                          const struct dcb_output *dcbe)
1271 {
1272         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1273         struct nouveau_drm *drm = nouveau_drm(dev);
1274         struct nouveau_display *disp = nouveau_display(dev);
1275         struct nouveau_connector *nv_connector = NULL;
1276         struct drm_connector *connector;
1277         struct drm_connector_list_iter conn_iter;
1278         char aux_name[48] = {0};
1279         int index = dcbe->connector;
1280         int type, ret = 0;
1281         bool dummy;
1282
1283         drm_connector_list_iter_begin(dev, &conn_iter);
1284         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1285                 nv_connector = nouveau_connector(connector);
1286                 if (nv_connector->index == index) {
1287                         drm_connector_list_iter_end(&conn_iter);
1288                         return connector;
1289                 }
1290         }
1291         drm_connector_list_iter_end(&conn_iter);
1292
1293         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1294         if (!nv_connector)
1295                 return ERR_PTR(-ENOMEM);
1296
1297         connector = &nv_connector->base;
1298         nv_connector->index = index;
1299
1300         /* attempt to parse vbios connector type and hotplug gpio */
1301         nv_connector->dcb = olddcb_conn(dev, index);
1302         if (nv_connector->dcb) {
1303                 u32 entry = ROM16(nv_connector->dcb[0]);
1304                 if (olddcb_conntab(dev)[3] >= 4)
1305                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1306
1307                 nv_connector->type = nv_connector->dcb[0];
1308                 if (drm_conntype_from_dcb(nv_connector->type) ==
1309                                           DRM_MODE_CONNECTOR_Unknown) {
1310                         NV_WARN(drm, "unknown connector type %02x\n",
1311                                 nv_connector->type);
1312                         nv_connector->type = DCB_CONNECTOR_NONE;
1313                 }
1314
1315                 /* Gigabyte NX85T */
1316                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1317                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1318                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1319                 }
1320
1321                 /* Gigabyte GV-NX86T512H */
1322                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1323                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1324                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1325                 }
1326         } else {
1327                 nv_connector->type = DCB_CONNECTOR_NONE;
1328         }
1329
1330         /* no vbios data, or an unknown dcb connector type - attempt to
1331          * figure out something suitable ourselves
1332          */
1333         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1334                 struct nouveau_drm *drm = nouveau_drm(dev);
1335                 struct dcb_table *dcbt = &drm->vbios.dcb;
1336                 u32 encoders = 0;
1337                 int i;
1338
1339                 for (i = 0; i < dcbt->entries; i++) {
1340                         if (dcbt->entry[i].connector == nv_connector->index)
1341                                 encoders |= (1 << dcbt->entry[i].type);
1342                 }
1343
1344                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1345                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1346                                 nv_connector->type = DCB_CONNECTOR_DP;
1347                         else
1348                                 nv_connector->type = DCB_CONNECTOR_eDP;
1349                 } else
1350                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1351                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1352                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1353                         else
1354                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1355                 } else
1356                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1357                         nv_connector->type = DCB_CONNECTOR_VGA;
1358                 } else
1359                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1360                         nv_connector->type = DCB_CONNECTOR_LVDS;
1361                 } else
1362                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1363                         nv_connector->type = DCB_CONNECTOR_TV_0;
1364                 }
1365         }
1366
1367         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1368         case DRM_MODE_CONNECTOR_LVDS:
1369                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1370                 if (ret) {
1371                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1372                         kfree(nv_connector);
1373                         return ERR_PTR(ret);
1374                 }
1375
1376                 funcs = &nouveau_connector_funcs_lvds;
1377                 break;
1378         case DRM_MODE_CONNECTOR_DisplayPort:
1379         case DRM_MODE_CONNECTOR_eDP:
1380                 nv_connector->aux.dev = connector->kdev;
1381                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1382                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1383                          dcbe->hasht, dcbe->hashm);
1384                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1385                 ret = drm_dp_aux_register(&nv_connector->aux);
1386                 if (ret) {
1387                         NV_ERROR(drm, "failed to register aux channel\n");
1388                         kfree(nv_connector);
1389                         return ERR_PTR(ret);
1390                 }
1391                 funcs = &nouveau_connector_funcs;
1392                 break;
1393         default:
1394                 funcs = &nouveau_connector_funcs;
1395                 break;
1396         }
1397
1398         /* HDMI 3D support */
1399         if ((disp->disp.object.oclass >= G82_DISP)
1400             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1401                 || (type == DRM_MODE_CONNECTOR_eDP)
1402                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1403                 connector->stereo_allowed = true;
1404
1405         /* defaults, will get overridden in detect() */
1406         connector->interlace_allowed = false;
1407         connector->doublescan_allowed = false;
1408
1409         drm_connector_init(dev, connector, funcs, type);
1410         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1411
1412         connector->funcs->reset(connector);
1413         nouveau_conn_attach_properties(connector);
1414
1415         /* Default scaling mode */
1416         switch (nv_connector->type) {
1417         case DCB_CONNECTOR_LVDS:
1418         case DCB_CONNECTOR_LVDS_SPWG:
1419         case DCB_CONNECTOR_eDP:
1420                 /* see note in nouveau_connector_set_property() */
1421                 if (disp->disp.object.oclass < NV50_DISP) {
1422                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1423                         break;
1424                 }
1425                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1426                 break;
1427         default:
1428                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1429                 break;
1430         }
1431
1432         /* dithering properties */
1433         switch (nv_connector->type) {
1434         case DCB_CONNECTOR_TV_0:
1435         case DCB_CONNECTOR_TV_1:
1436         case DCB_CONNECTOR_TV_3:
1437         case DCB_CONNECTOR_VGA:
1438                 break;
1439         default:
1440                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1441                 break;
1442         }
1443
1444         switch (type) {
1445         case DRM_MODE_CONNECTOR_DisplayPort:
1446         case DRM_MODE_CONNECTOR_eDP:
1447                 drm_dp_cec_register_connector(&nv_connector->aux, connector);
1448                 break;
1449         }
1450
1451         ret = nvif_notify_init(&disp->disp.object, nouveau_connector_hotplug,
1452                                true, NV04_DISP_NTFY_CONN,
1453                                &(struct nvif_notify_conn_req_v0) {
1454                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1455                                 .conn = index,
1456                                },
1457                                sizeof(struct nvif_notify_conn_req_v0),
1458                                sizeof(struct nvif_notify_conn_rep_v0),
1459                                &nv_connector->hpd);
1460         if (ret)
1461                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1462         else
1463                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1464
1465         drm_connector_register(connector);
1466         return connector;
1467 }