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/drmP.h>
  33 #include <drm/drm_atomic_helper.h>
  34 #include <drm/drm_edid.h>
  35 #include <drm/drm_crtc_helper.h>
  36 #include <drm/drm_probe_helper.h>
  37 #include <drm/drm_atomic.h>
  38
  39 #include "nouveau_reg.h"
  40 #include "nouveau_drv.h"
  41 #include "dispnv04/hw.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                 mode->vrefresh = drm_mode_vrefresh(mode);
  64                 if (helper->mode_valid(connector, mode) != MODE_OK ||
  65                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
  66                         continue;
  67
  68                 /* Use preferred mode if there is one.. */
  69                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
  70                         NV_DEBUG(drm, "native mode from preferred\n");
  71                         return drm_mode_duplicate(dev, mode);
  72                 }
  73
  74                 /* Otherwise, take the resolution with the largest width, then
  75                  * height, then vertical refresh
  76                  */
  77                 if (mode->hdisplay < high_w)
  78                         continue;
  79
  80                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
  81                         continue;
  82
  83                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
  84                     mode->vrefresh < high_v)
  85                         continue;
  86
  87                 high_w = mode->hdisplay;
  88                 high_h = mode->vdisplay;
  89                 high_v = mode->vrefresh;
  90                 largest = mode;
  91         }
  92
  93         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
  94                       high_w, high_h, high_v);
  95         return largest ? drm_mode_duplicate(dev, largest) : NULL;
  96 }
  97
  98 int
  99 nouveau_conn_atomic_get_property(struct drm_connector *connector,
 100                                  const struct drm_connector_state *state,
 101                                  struct drm_property *property, u64 *val)
 102 {
 103         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 104         struct nouveau_display *disp = nouveau_display(connector->dev);
 105         struct drm_device *dev = connector->dev;
 106
 107         if (property == dev->mode_config.scaling_mode_property)
 108                 *val = asyc->scaler.mode;
 109         else if (property == disp->underscan_property)
 110                 *val = asyc->scaler.underscan.mode;
 111         else if (property == disp->underscan_hborder_property)
 112                 *val = asyc->scaler.underscan.hborder;
 113         else if (property == disp->underscan_vborder_property)
 114                 *val = asyc->scaler.underscan.vborder;
 115         else if (property == disp->dithering_mode)
 116                 *val = asyc->dither.mode;
 117         else if (property == disp->dithering_depth)
 118                 *val = asyc->dither.depth;
 119         else if (property == disp->vibrant_hue_property)
 120                 *val = asyc->procamp.vibrant_hue;
 121         else if (property == disp->color_vibrance_property)
 122                 *val = asyc->procamp.color_vibrance;
 123         else
 124                 return -EINVAL;
 125
 126         return 0;
 127 }
 128
 129 int
 130 nouveau_conn_atomic_set_property(struct drm_connector *connector,
 131                                  struct drm_connector_state *state,
 132                                  struct drm_property *property, u64 val)
 133 {
 134         struct drm_device *dev = connector->dev;
 135         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 136         struct nouveau_display *disp = nouveau_display(dev);
 137
 138         if (property == dev->mode_config.scaling_mode_property) {
 139                 switch (val) {
 140                 case DRM_MODE_SCALE_NONE:
 141                         /* We allow 'None' for EDID modes, even on a fixed
 142                          * panel (some exist with support for lower refresh
 143                          * rates, which people might want to use for power-
 144                          * saving purposes).
 145                          *
 146                          * Non-EDID modes will force the use of GPU scaling
 147                          * to the native mode regardless of this setting.
 148                          */
 149                         switch (connector->connector_type) {
 150                         case DRM_MODE_CONNECTOR_LVDS:
 151                         case DRM_MODE_CONNECTOR_eDP:
 152                                 /* ... except prior to G80, where the code
 153                                  * doesn't support such things.
 154                                  */
 155                                 if (disp->disp.object.oclass < NV50_DISP)
 156                                         return -EINVAL;
 157                                 break;
 158                         default:
 159                                 break;
 160                         }
 161                 case DRM_MODE_SCALE_FULLSCREEN:
 162                 case DRM_MODE_SCALE_CENTER:
 163                 case DRM_MODE_SCALE_ASPECT:
 164                         break;
 165                 default:
 166                         return -EINVAL;
 167                 }
 168
 169                 if (asyc->scaler.mode != val) {
 170                         asyc->scaler.mode = val;
 171                         asyc->set.scaler = true;
 172                 }
 173         } else
 174         if (property == disp->underscan_property) {
 175                 if (asyc->scaler.underscan.mode != val) {
 176                         asyc->scaler.underscan.mode = val;
 177                         asyc->set.scaler = true;
 178                 }
 179         } else
 180         if (property == disp->underscan_hborder_property) {
 181                 if (asyc->scaler.underscan.hborder != val) {
 182                         asyc->scaler.underscan.hborder = val;
 183                         asyc->set.scaler = true;
 184                 }
 185         } else
 186         if (property == disp->underscan_vborder_property) {
 187                 if (asyc->scaler.underscan.vborder != val) {
 188                         asyc->scaler.underscan.vborder = val;
 189                         asyc->set.scaler = true;
 190                 }
 191         } else
 192         if (property == disp->dithering_mode) {
 193                 if (asyc->dither.mode != val) {
 194                         asyc->dither.mode = val;
 195                         asyc->set.dither = true;
 196                 }
 197         } else
 198         if (property == disp->dithering_depth) {
 199                 if (asyc->dither.mode != val) {
 200                         asyc->dither.depth = val;
 201                         asyc->set.dither = true;
 202                 }
 203         } else
 204         if (property == disp->vibrant_hue_property) {
 205                 if (asyc->procamp.vibrant_hue != val) {
 206                         asyc->procamp.vibrant_hue = val;
 207                         asyc->set.procamp = true;
 208                 }
 209         } else
 210         if (property == disp->color_vibrance_property) {
 211                 if (asyc->procamp.color_vibrance != val) {
 212                         asyc->procamp.color_vibrance = val;
 213                         asyc->set.procamp = true;
 214                 }
 215         } else {
 216                 return -EINVAL;
 217         }
 218
 219         return 0;
 220 }
 221
 222 void
 223 nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 224                                   struct drm_connector_state *state)
 225 {
 226         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 227         __drm_atomic_helper_connector_destroy_state(&asyc->state);
 228         kfree(asyc);
 229 }
 230
 231 struct drm_connector_state *
 232 nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 233 {
 234         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 235         struct nouveau_conn_atom *asyc;
 236         if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 237                 return NULL;
 238         __drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 239         asyc->dither = armc->dither;
 240         asyc->scaler = armc->scaler;
 241         asyc->procamp = armc->procamp;
 242         asyc->set.mask = 0;
 243         return &asyc->state;
 244 }
 245
 246 void
 247 nouveau_conn_reset(struct drm_connector *connector)
 248 {
 249         struct nouveau_conn_atom *asyc;
 250
 251         if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 252                 return;
 253
 254         if (connector->state)
 255                 __drm_atomic_helper_connector_destroy_state(connector->state);
 256         __drm_atomic_helper_connector_reset(connector, &asyc->state);
 257         asyc->dither.mode = DITHERING_MODE_AUTO;
 258         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 259         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 260         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 261         asyc->procamp.color_vibrance = 150;
 262         asyc->procamp.vibrant_hue = 90;
 263
 264         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 265                 switch (connector->connector_type) {
 266                 case DRM_MODE_CONNECTOR_LVDS:
 267                         /* See note in nouveau_conn_atomic_set_property(). */
 268                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 269                         break;
 270                 default:
 271                         break;
 272                 }
 273         }
 274 }
 275
 276 void
 277 nouveau_conn_attach_properties(struct drm_connector *connector)
 278 {
 279         struct drm_device *dev = connector->dev;
 280         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 281         struct nouveau_display *disp = nouveau_display(dev);
 282
 283         /* Init DVI-I specific properties. */
 284         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 285                 drm_object_attach_property(&connector->base, dev->mode_config.
 286                                            dvi_i_subconnector_property, 0);
 287
 288         /* Add overscan compensation options to digital outputs. */
 289         if (disp->underscan_property &&
 290             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 291              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 292              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 293              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 294                 drm_object_attach_property(&connector->base,
 295                                            disp->underscan_property,
 296                                            UNDERSCAN_OFF);
 297                 drm_object_attach_property(&connector->base,
 298                                            disp->underscan_hborder_property, 0);
 299                 drm_object_attach_property(&connector->base,
 300                                            disp->underscan_vborder_property, 0);
 301         }
 302
 303         /* Add hue and saturation options. */
 304         if (disp->vibrant_hue_property)
 305                 drm_object_attach_property(&connector->base,
 306                                            disp->vibrant_hue_property,
 307                                            armc->procamp.vibrant_hue);
 308         if (disp->color_vibrance_property)
 309                 drm_object_attach_property(&connector->base,
 310                                            disp->color_vibrance_property,
 311                                            armc->procamp.color_vibrance);
 312
 313         /* Scaling mode property. */
 314         switch (connector->connector_type) {
 315         case DRM_MODE_CONNECTOR_TV:
 316                 break;
 317         case DRM_MODE_CONNECTOR_VGA:
 318                 if (disp->disp.object.oclass < NV50_DISP)
 319                         break; /* Can only scale on DFPs. */
 320                 /* Fall-through. */
 321         default:
 322                 drm_object_attach_property(&connector->base, dev->mode_config.
 323                                            scaling_mode_property,
 324                                            armc->scaler.mode);
 325                 break;
 326         }
 327
 328         /* Dithering properties. */
 329         switch (connector->connector_type) {
 330         case DRM_MODE_CONNECTOR_TV:
 331         case DRM_MODE_CONNECTOR_VGA:
 332                 break;
 333         default:
 334                 if (disp->dithering_mode) {
 335                         drm_object_attach_property(&connector->base,
 336                                                    disp->dithering_mode,
 337                                                    armc->dither.mode);
 338                 }
 339                 if (disp->dithering_depth) {
 340                         drm_object_attach_property(&connector->base,
 341                                                    disp->dithering_depth,
 342                                                    armc->dither.depth);
 343                 }
 344                 break;
 345         }
 346 }
 347
 348 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 349 int nouveau_tv_disable = 0;
 350 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 351
 352 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 353 int nouveau_ignorelid = 0;
 354 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 355
 356 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 357 int nouveau_duallink = 1;
 358 module_param_named(duallink, nouveau_duallink, int, 0400);
 359
 360 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 361 int nouveau_hdmimhz = 0;
 362 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 363
 364 struct nouveau_encoder *
 365 find_encoder(struct drm_connector *connector, int type)
 366 {
 367         struct nouveau_encoder *nv_encoder;
 368         struct drm_encoder *enc;
 369         int i;
 370
 371         drm_connector_for_each_possible_encoder(connector, enc, i) {
 372                 nv_encoder = nouveau_encoder(enc);
 373
 374                 if (type == DCB_OUTPUT_ANY ||
 375                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
 376                         return nv_encoder;
 377         }
 378
 379         return NULL;
 380 }
 381
 382 struct nouveau_connector *
 383 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
 384 {
 385         struct drm_device *dev = to_drm_encoder(encoder)->dev;
 386         struct drm_connector *drm_connector;
 387
 388         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 389                 if (drm_connector->encoder == to_drm_encoder(encoder))
 390                         return nouveau_connector(drm_connector);
 391         }
 392
 393         return NULL;
 394 }
 395
 396 static void
 397 nouveau_connector_destroy(struct drm_connector *connector)
 398 {
 399         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 400         nvif_notify_fini(&nv_connector->hpd);
 401         kfree(nv_connector->edid);
 402         drm_connector_unregister(connector);
 403         drm_connector_cleanup(connector);
 404         if (nv_connector->aux.transfer) {
 405                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 406                 drm_dp_aux_unregister(&nv_connector->aux);
 407                 kfree(nv_connector->aux.name);
 408         }
 409         kfree(connector);
 410 }
 411
 412 static struct nouveau_encoder *
 413 nouveau_connector_ddc_detect(struct drm_connector *connector)
 414 {
 415         struct drm_device *dev = connector->dev;
 416         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 417         struct drm_encoder *encoder;
 418         int i, ret;
 419         bool switcheroo_ddc = false;
 420
 421         drm_connector_for_each_possible_encoder(connector, encoder, i) {
 422                 nv_encoder = nouveau_encoder(encoder);
 423
 424                 switch (nv_encoder->dcb->type) {
 425                 case DCB_OUTPUT_DP:
 426                         ret = nouveau_dp_detect(nv_encoder);
 427                         if (ret == NOUVEAU_DP_MST)
 428                                 return NULL;
 429                         else if (ret == NOUVEAU_DP_SST)
 430                                 found = nv_encoder;
 431
 432                         break;
 433                 case DCB_OUTPUT_LVDS:
 434                         switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 435                                             VGA_SWITCHEROO_CAN_SWITCH_DDC);
 436                 /* fall-through */
 437                 default:
 438                         if (!nv_encoder->i2c)
 439                                 break;
 440
 441                         if (switcheroo_ddc)
 442                                 vga_switcheroo_lock_ddc(dev->pdev);
 443                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 444                                 found = nv_encoder;
 445                         if (switcheroo_ddc)
 446                                 vga_switcheroo_unlock_ddc(dev->pdev);
 447
 448                         break;
 449                 }
 450                 if (found)
 451                         break;
 452         }
 453
 454         return found;
 455 }
 456
 457 static struct nouveau_encoder *
 458 nouveau_connector_of_detect(struct drm_connector *connector)
 459 {
 460 #ifdef __powerpc__
 461         struct drm_device *dev = connector->dev;
 462         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 463         struct nouveau_encoder *nv_encoder;
 464         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 465
 466         if (!dn ||
 467             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 468               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 469                 return NULL;
 470
 471         for_each_child_of_node(dn, cn) {
 472                 const char *name = of_get_property(cn, "name", NULL);
 473                 const void *edid = of_get_property(cn, "EDID", NULL);
 474                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 475
 476                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 477                         nv_connector->edid =
 478                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 479                         of_node_put(cn);
 480                         return nv_encoder;
 481                 }
 482         }
 483 #endif
 484         return NULL;
 485 }
 486
 487 static void
 488 nouveau_connector_set_encoder(struct drm_connector *connector,
 489                               struct nouveau_encoder *nv_encoder)
 490 {
 491         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 492         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 493         struct drm_device *dev = connector->dev;
 494
 495         if (nv_connector->detected_encoder == nv_encoder)
 496                 return;
 497         nv_connector->detected_encoder = nv_encoder;
 498
 499         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 500                 connector->interlace_allowed = true;
 501                 connector->doublescan_allowed = true;
 502         } else
 503         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 504             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 505                 connector->doublescan_allowed = false;
 506                 connector->interlace_allowed = false;
 507         } else {
 508                 connector->doublescan_allowed = true;
 509                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 510                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 511                      (dev->pdev->device & 0x0ff0) != 0x0100 &&
 512                      (dev->pdev->device & 0x0ff0) != 0x0150))
 513                         /* HW is broken */
 514                         connector->interlace_allowed = false;
 515                 else
 516                         connector->interlace_allowed = true;
 517         }
 518
 519         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 520                 drm_object_property_set_value(&connector->base,
 521                         dev->mode_config.dvi_i_subconnector_property,
 522                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 523                         DRM_MODE_SUBCONNECTOR_DVID :
 524                         DRM_MODE_SUBCONNECTOR_DVIA);
 525         }
 526 }
 527
 528 static enum drm_connector_status
 529 nouveau_connector_detect(struct drm_connector *connector, bool force)
 530 {
 531         struct drm_device *dev = connector->dev;
 532         struct nouveau_drm *drm = nouveau_drm(dev);
 533         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 534         struct nouveau_encoder *nv_encoder = NULL;
 535         struct nouveau_encoder *nv_partner;
 536         struct i2c_adapter *i2c;
 537         int type;
 538         int ret;
 539         enum drm_connector_status conn_status = connector_status_disconnected;
 540
 541         /* Cleanup the previous EDID block. */
 542         if (nv_connector->edid) {
 543                 drm_connector_update_edid_property(connector, NULL);
 544                 kfree(nv_connector->edid);
 545                 nv_connector->edid = NULL;
 546         }
 547
 548         /* Outputs are only polled while runtime active, so resuming the
 549          * device here is unnecessary (and would deadlock upon runtime suspend
 550          * because it waits for polling to finish). We do however, want to
 551          * prevent the autosuspend timer from elapsing during this operation
 552          * if possible.
 553          */
 554         if (drm_kms_helper_is_poll_worker()) {
 555                 pm_runtime_get_noresume(dev->dev);
 556         } else {
 557                 ret = pm_runtime_get_sync(dev->dev);
 558                 if (ret < 0 && ret != -EACCES)
 559                         return conn_status;
 560         }
 561
 562         nv_encoder = nouveau_connector_ddc_detect(connector);
 563         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 564                 if ((vga_switcheroo_handler_flags() &
 565                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 566                     nv_connector->type == DCB_CONNECTOR_LVDS)
 567                         nv_connector->edid = drm_get_edid_switcheroo(connector,
 568                                                                      i2c);
 569                 else
 570                         nv_connector->edid = drm_get_edid(connector, i2c);
 571
 572                 drm_connector_update_edid_property(connector,
 573                                                         nv_connector->edid);
 574                 if (!nv_connector->edid) {
 575                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 576                                  connector->name);
 577                         goto detect_analog;
 578                 }
 579
 580                 /* Override encoder type for DVI-I based on whether EDID
 581                  * says the display is digital or analog, both use the
 582                  * same i2c channel so the value returned from ddc_detect
 583                  * isn't necessarily correct.
 584                  */
 585                 nv_partner = NULL;
 586                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 587                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 588                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 589                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 590
 591                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 592                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 593                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 594                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 595                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 596                                 type = DCB_OUTPUT_TMDS;
 597                         else
 598                                 type = DCB_OUTPUT_ANALOG;
 599
 600                         nv_encoder = find_encoder(connector, type);
 601                 }
 602
 603                 nouveau_connector_set_encoder(connector, nv_encoder);
 604                 conn_status = connector_status_connected;
 605                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 606                 goto out;
 607         }
 608
 609         nv_encoder = nouveau_connector_of_detect(connector);
 610         if (nv_encoder) {
 611                 nouveau_connector_set_encoder(connector, nv_encoder);
 612                 conn_status = connector_status_connected;
 613                 goto out;
 614         }
 615
 616 detect_analog:
 617         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 618         if (!nv_encoder && !nouveau_tv_disable)
 619                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 620         if (nv_encoder && force) {
 621                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 622                 const struct drm_encoder_helper_funcs *helper =
 623                                                 encoder->helper_private;
 624
 625                 if (helper->detect(encoder, connector) ==
 626                                                 connector_status_connected) {
 627                         nouveau_connector_set_encoder(connector, nv_encoder);
 628                         conn_status = connector_status_connected;
 629                         goto out;
 630                 }
 631
 632         }
 633
 634  out:
 635
 636         pm_runtime_mark_last_busy(dev->dev);
 637         pm_runtime_put_autosuspend(dev->dev);
 638
 639         return conn_status;
 640 }
 641
 642 static enum drm_connector_status
 643 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 644 {
 645         struct drm_device *dev = connector->dev;
 646         struct nouveau_drm *drm = nouveau_drm(dev);
 647         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 648         struct nouveau_encoder *nv_encoder = NULL;
 649         enum drm_connector_status status = connector_status_disconnected;
 650
 651         /* Cleanup the previous EDID block. */
 652         if (nv_connector->edid) {
 653                 drm_connector_update_edid_property(connector, NULL);
 654                 kfree(nv_connector->edid);
 655                 nv_connector->edid = NULL;
 656         }
 657
 658         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 659         if (!nv_encoder)
 660                 return connector_status_disconnected;
 661
 662         /* Try retrieving EDID via DDC */
 663         if (!drm->vbios.fp_no_ddc) {
 664                 status = nouveau_connector_detect(connector, force);
 665                 if (status == connector_status_connected)
 666                         goto out;
 667         }
 668
 669         /* On some laptops (Sony, i'm looking at you) there appears to
 670          * be no direct way of accessing the panel's EDID.  The only
 671          * option available to us appears to be to ask ACPI for help..
 672          *
 673          * It's important this check's before trying straps, one of the
 674          * said manufacturer's laptops are configured in such a way
 675          * the nouveau decides an entry in the VBIOS FP mode table is
 676          * valid - it's not (rh#613284)
 677          */
 678         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 679                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 680                         status = connector_status_connected;
 681                         goto out;
 682                 }
 683         }
 684
 685         /* If no EDID found above, and the VBIOS indicates a hardcoded
 686          * modeline is avalilable for the panel, set it as the panel's
 687          * native mode and exit.
 688          */
 689         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 690             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 691                 status = connector_status_connected;
 692                 goto out;
 693         }
 694
 695         /* Still nothing, some VBIOS images have a hardcoded EDID block
 696          * stored for the panel stored in them.
 697          */
 698         if (!drm->vbios.fp_no_ddc) {
 699                 struct edid *edid =
 700                         (struct edid *)nouveau_bios_embedded_edid(dev);
 701                 if (edid) {
 702                         nv_connector->edid =
 703                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 704                         if (nv_connector->edid)
 705                                 status = connector_status_connected;
 706                 }
 707         }
 708
 709 out:
 710 #if defined(CONFIG_ACPI_BUTTON) || \
 711         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 712         if (status == connector_status_connected &&
 713             !nouveau_ignorelid && !acpi_lid_open())
 714                 status = connector_status_unknown;
 715 #endif
 716
 717         drm_connector_update_edid_property(connector, nv_connector->edid);
 718         nouveau_connector_set_encoder(connector, nv_encoder);
 719         return status;
 720 }
 721
 722 static void
 723 nouveau_connector_force(struct drm_connector *connector)
 724 {
 725         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 726         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 727         struct nouveau_encoder *nv_encoder;
 728         int type;
 729
 730         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 731                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 732                         type = DCB_OUTPUT_TMDS;
 733                 else
 734                         type = DCB_OUTPUT_ANALOG;
 735         } else
 736                 type = DCB_OUTPUT_ANY;
 737
 738         nv_encoder = find_encoder(connector, type);
 739         if (!nv_encoder) {
 740                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 741                          connector->name);
 742                 connector->status = connector_status_disconnected;
 743                 return;
 744         }
 745
 746         nouveau_connector_set_encoder(connector, nv_encoder);
 747 }
 748
 749 static int
 750 nouveau_connector_set_property(struct drm_connector *connector,
 751                                struct drm_property *property, uint64_t value)
 752 {
 753         struct nouveau_conn_atom *asyc = nouveau_conn_atom(connector->state);
 754         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 755         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 756         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 757         int ret;
 758
 759         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 760                                                     &asyc->state,
 761                                                     property, value);
 762         if (ret) {
 763                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 764                         return get_slave_funcs(encoder)->set_property(
 765                                 encoder, connector, property, value);
 766                 return ret;
 767         }
 768
 769         nv_connector->scaling_mode = asyc->scaler.mode;
 770         nv_connector->dithering_mode = asyc->dither.mode;
 771
 772         if (connector->encoder && connector->encoder->crtc) {
 773                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 774                                               &connector->encoder->crtc->mode,
 775                                                connector->encoder->crtc->x,
 776                                                connector->encoder->crtc->y,
 777                                                NULL);
 778                 if (!ret)
 779                         return -EINVAL;
 780         }
 781
 782         return 0;
 783 }
 784
 785 struct moderec {
 786         int hdisplay;
 787         int vdisplay;
 788 };
 789
 790 static struct moderec scaler_modes[] = {
 791         { 1920, 1200 },
 792         { 1920, 1080 },
 793         { 1680, 1050 },
 794         { 1600, 1200 },
 795         { 1400, 1050 },
 796         { 1280, 1024 },
 797         { 1280, 960 },
 798         { 1152, 864 },
 799         { 1024, 768 },
 800         { 800, 600 },
 801         { 720, 400 },
 802         { 640, 480 },
 803         { 640, 400 },
 804         { 640, 350 },
 805         {}
 806 };
 807
 808 static int
 809 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 810 {
 811         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 812         struct drm_display_mode *native = nv_connector->native_mode, *m;
 813         struct drm_device *dev = connector->dev;
 814         struct moderec *mode = &scaler_modes[0];
 815         int modes = 0;
 816
 817         if (!native)
 818                 return 0;
 819
 820         while (mode->hdisplay) {
 821                 if (mode->hdisplay <= native->hdisplay &&
 822                     mode->vdisplay <= native->vdisplay &&
 823                     (mode->hdisplay != native->hdisplay ||
 824                      mode->vdisplay != native->vdisplay)) {
 825                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 826                                          drm_mode_vrefresh(native), false,
 827                                          false, false);
 828                         if (!m)
 829                                 continue;
 830
 831                         drm_mode_probed_add(connector, m);
 832                         modes++;
 833                 }
 834
 835                 mode++;
 836         }
 837
 838         return modes;
 839 }
 840
 841 static void
 842 nouveau_connector_detect_depth(struct drm_connector *connector)
 843 {
 844         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 845         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 846         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 847         struct nvbios *bios = &drm->vbios;
 848         struct drm_display_mode *mode = nv_connector->native_mode;
 849         bool duallink;
 850
 851         /* if the edid is feeling nice enough to provide this info, use it */
 852         if (nv_connector->edid && connector->display_info.bpc)
 853                 return;
 854
 855         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 856         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 857                 connector->display_info.bpc = 6;
 858                 return;
 859         }
 860
 861         /* we're out of options unless we're LVDS, default to 8bpc */
 862         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 863                 connector->display_info.bpc = 8;
 864                 return;
 865         }
 866
 867         connector->display_info.bpc = 6;
 868
 869         /* LVDS: panel straps */
 870         if (bios->fp_no_ddc) {
 871                 if (bios->fp.if_is_24bit)
 872                         connector->display_info.bpc = 8;
 873                 return;
 874         }
 875
 876         /* LVDS: DDC panel, need to first determine the number of links to
 877          * know which if_is_24bit flag to check...
 878          */
 879         if (nv_connector->edid &&
 880             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 881                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 882         else
 883                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 884
 885         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 886             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 887                 connector->display_info.bpc = 8;
 888 }
 889
 890 static int
 891 nouveau_connector_late_register(struct drm_connector *connector)
 892 {
 893         int ret;
 894
 895         ret = nouveau_backlight_init(connector);
 896
 897         return ret;
 898 }
 899
 900 static void
 901 nouveau_connector_early_unregister(struct drm_connector *connector)
 902 {
 903         nouveau_backlight_fini(connector);
 904 }
 905
 906 static int
 907 nouveau_connector_get_modes(struct drm_connector *connector)
 908 {
 909         struct drm_device *dev = connector->dev;
 910         struct nouveau_drm *drm = nouveau_drm(dev);
 911         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 912         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 913         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 914         int ret = 0;
 915
 916         /* destroy the native mode, the attached monitor could have changed.
 917          */
 918         if (nv_connector->native_mode) {
 919                 drm_mode_destroy(dev, nv_connector->native_mode);
 920                 nv_connector->native_mode = NULL;
 921         }
 922
 923         if (nv_connector->edid)
 924                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 925         else
 926         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 927             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 928              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 929                 struct drm_display_mode mode;
 930
 931                 nouveau_bios_fp_mode(dev, &mode);
 932                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 933         }
 934
 935         /* Determine display colour depth for everything except LVDS now,
 936          * DP requires this before mode_valid() is called.
 937          */
 938         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 939                 nouveau_connector_detect_depth(connector);
 940
 941         /* Find the native mode if this is a digital panel, if we didn't
 942          * find any modes through DDC previously add the native mode to
 943          * the list of modes.
 944          */
 945         if (!nv_connector->native_mode)
 946                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 947         if (ret == 0 && nv_connector->native_mode) {
 948                 struct drm_display_mode *mode;
 949
 950                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 951                 drm_mode_probed_add(connector, mode);
 952                 ret = 1;
 953         }
 954
 955         /* Determine LVDS colour depth, must happen after determining
 956          * "native" mode as some VBIOS tables require us to use the
 957          * pixel clock as part of the lookup...
 958          */
 959         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 960                 nouveau_connector_detect_depth(connector);
 961
 962         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 963                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 964
 965         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 966             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 967             nv_connector->type == DCB_CONNECTOR_eDP)
 968                 ret += nouveau_connector_scaler_modes_add(connector);
 969
 970         return ret;
 971 }
 972
 973 static unsigned
 974 get_tmds_link_bandwidth(struct drm_connector *connector)
 975 {
 976         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 977         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 978         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 979         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 980         struct drm_display_info *info = NULL;
 981         const unsigned duallink_scale =
 982                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
 983
 984         if (drm_detect_hdmi_monitor(nv_connector->edid))
 985                 info = &nv_connector->base.display_info;
 986
 987         if (info) {
 988                 if (nouveau_hdmimhz > 0)
 989                         return nouveau_hdmimhz * 1000;
 990                 /* Note: these limits are conservative, some Fermi's
 991                  * can do 297 MHz. Unclear how this can be determined.
 992                  */
 993                 if (drm->client.device.info.chipset >= 0x120) {
 994                         const int max_tmds_clock =
 995                                 info->hdmi.scdc.scrambling.supported ?
 996                                 594000 : 340000;
 997                         return info->max_tmds_clock ?
 998                                 min(info->max_tmds_clock, max_tmds_clock) :
 999                                 max_tmds_clock;
1000                 }
1001                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1002                         return 297000;
1003                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1004                         return 225000;
1005         }
1006         if (dcb->location != DCB_LOC_ON_CHIP ||
1007             drm->client.device.info.chipset >= 0x46)
1008                 return 165000 * duallink_scale;
1009         else if (drm->client.device.info.chipset >= 0x40)
1010                 return 155000 * duallink_scale;
1011         else if (drm->client.device.info.chipset >= 0x18)
1012                 return 135000 * duallink_scale;
1013         else
1014                 return 112000 * duallink_scale;
1015 }
1016
1017 static enum drm_mode_status
1018 nouveau_connector_mode_valid(struct drm_connector *connector,
1019                              struct drm_display_mode *mode)
1020 {
1021         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1022         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1023         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1024         unsigned min_clock = 25000, max_clock = min_clock;
1025         unsigned clock = mode->clock;
1026
1027         switch (nv_encoder->dcb->type) {
1028         case DCB_OUTPUT_LVDS:
1029                 if (nv_connector->native_mode &&
1030                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1031                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1032                         return MODE_PANEL;
1033
1034                 min_clock = 0;
1035                 max_clock = 400000;
1036                 break;
1037         case DCB_OUTPUT_TMDS:
1038                 max_clock = get_tmds_link_bandwidth(connector);
1039                 break;
1040         case DCB_OUTPUT_ANALOG:
1041                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1042                 if (!max_clock)
1043                         max_clock = 350000;
1044                 break;
1045         case DCB_OUTPUT_TV:
1046                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1047         case DCB_OUTPUT_DP:
1048                 max_clock  = nv_encoder->dp.link_nr;
1049                 max_clock *= nv_encoder->dp.link_bw;
1050                 clock = clock * (connector->display_info.bpc * 3) / 10;
1051                 break;
1052         default:
1053                 BUG();
1054                 return MODE_BAD;
1055         }
1056
1057         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1058                 clock *= 2;
1059
1060         if (clock < min_clock)
1061                 return MODE_CLOCK_LOW;
1062
1063         if (clock > max_clock)
1064                 return MODE_CLOCK_HIGH;
1065
1066         return MODE_OK;
1067 }
1068
1069 static struct drm_encoder *
1070 nouveau_connector_best_encoder(struct drm_connector *connector)
1071 {
1072         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1073
1074         if (nv_connector->detected_encoder)
1075                 return to_drm_encoder(nv_connector->detected_encoder);
1076
1077         return NULL;
1078 }
1079
1080 static const struct drm_connector_helper_funcs
1081 nouveau_connector_helper_funcs = {
1082         .get_modes = nouveau_connector_get_modes,
1083         .mode_valid = nouveau_connector_mode_valid,
1084         .best_encoder = nouveau_connector_best_encoder,
1085 };
1086
1087 static const struct drm_connector_funcs
1088 nouveau_connector_funcs = {
1089         .dpms = drm_helper_connector_dpms,
1090         .reset = nouveau_conn_reset,
1091         .detect = nouveau_connector_detect,
1092         .force = nouveau_connector_force,
1093         .fill_modes = drm_helper_probe_single_connector_modes,
1094         .set_property = nouveau_connector_set_property,
1095         .destroy = nouveau_connector_destroy,
1096         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1097         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1098         .atomic_set_property = nouveau_conn_atomic_set_property,
1099         .atomic_get_property = nouveau_conn_atomic_get_property,
1100         .late_register = nouveau_connector_late_register,
1101         .early_unregister = nouveau_connector_early_unregister,
1102 };
1103
1104 static const struct drm_connector_funcs
1105 nouveau_connector_funcs_lvds = {
1106         .dpms = drm_helper_connector_dpms,
1107         .reset = nouveau_conn_reset,
1108         .detect = nouveau_connector_detect_lvds,
1109         .force = nouveau_connector_force,
1110         .fill_modes = drm_helper_probe_single_connector_modes,
1111         .set_property = nouveau_connector_set_property,
1112         .destroy = nouveau_connector_destroy,
1113         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1114         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1115         .atomic_set_property = nouveau_conn_atomic_set_property,
1116         .atomic_get_property = nouveau_conn_atomic_get_property,
1117         .late_register = nouveau_connector_late_register,
1118         .early_unregister = nouveau_connector_early_unregister,
1119 };
1120
1121 static int
1122 nouveau_connector_hotplug(struct nvif_notify *notify)
1123 {
1124         struct nouveau_connector *nv_connector =
1125                 container_of(notify, typeof(*nv_connector), hpd);
1126         struct drm_connector *connector = &nv_connector->base;
1127         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1128         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1129         const char *name = connector->name;
1130         struct nouveau_encoder *nv_encoder;
1131         int ret;
1132
1133         ret = pm_runtime_get(drm->dev->dev);
1134         if (ret == 0) {
1135                 /* We can't block here if there's a pending PM request
1136                  * running, as we'll deadlock nouveau_display_fini() when it
1137                  * calls nvif_put() on our nvif_notify struct. So, simply
1138                  * defer the hotplug event until the device finishes resuming
1139                  */
1140                 NV_DEBUG(drm, "Deferring HPD on %s until runtime resume\n",
1141                          name);
1142                 schedule_work(&drm->hpd_work);
1143
1144                 pm_runtime_put_noidle(drm->dev->dev);
1145                 return NVIF_NOTIFY_KEEP;
1146         } else if (ret != 1 && ret != -EACCES) {
1147                 NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
1148                         name, ret);
1149                 return NVIF_NOTIFY_DROP;
1150         }
1151
1152         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1153                 NV_DEBUG(drm, "service %s\n", name);
1154                 drm_dp_cec_irq(&nv_connector->aux);
1155                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1156                         nv50_mstm_service(nv_encoder->dp.mstm);
1157         } else {
1158                 bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1159
1160                 if (!plugged)
1161                         drm_dp_cec_unset_edid(&nv_connector->aux);
1162                 NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1163                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1164                         if (!plugged)
1165                                 nv50_mstm_remove(nv_encoder->dp.mstm);
1166                 }
1167
1168                 drm_helper_hpd_irq_event(connector->dev);
1169         }
1170
1171         pm_runtime_mark_last_busy(drm->dev->dev);
1172         pm_runtime_put_autosuspend(drm->dev->dev);
1173         return NVIF_NOTIFY_KEEP;
1174 }
1175
1176 static ssize_t
1177 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1178 {
1179         struct nouveau_connector *nv_connector =
1180                 container_of(obj, typeof(*nv_connector), aux);
1181         struct nouveau_encoder *nv_encoder;
1182         struct nvkm_i2c_aux *aux;
1183         u8 size = msg->size;
1184         int ret;
1185
1186         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1187         if (!nv_encoder || !(aux = nv_encoder->aux))
1188                 return -ENODEV;
1189         if (WARN_ON(msg->size > 16))
1190                 return -E2BIG;
1191
1192         ret = nvkm_i2c_aux_acquire(aux);
1193         if (ret)
1194                 return ret;
1195
1196         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1197                                 msg->buffer, &size);
1198         nvkm_i2c_aux_release(aux);
1199         if (ret >= 0) {
1200                 msg->reply = ret;
1201                 return size;
1202         }
1203
1204         return ret;
1205 }
1206
1207 static int
1208 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1209 {
1210         switch (dcb) {
1211         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1212         case DCB_CONNECTOR_TV_0     :
1213         case DCB_CONNECTOR_TV_1     :
1214         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1215         case DCB_CONNECTOR_DMS59_0  :
1216         case DCB_CONNECTOR_DMS59_1  :
1217         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1218         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1219         case DCB_CONNECTOR_LVDS     :
1220         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1221         case DCB_CONNECTOR_DMS59_DP0:
1222         case DCB_CONNECTOR_DMS59_DP1:
1223         case DCB_CONNECTOR_DP       :
1224         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1225         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1226         case DCB_CONNECTOR_HDMI_0   :
1227         case DCB_CONNECTOR_HDMI_1   :
1228         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1229         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1230         default:
1231                 break;
1232         }
1233
1234         return DRM_MODE_CONNECTOR_Unknown;
1235 }
1236
1237 struct drm_connector *
1238 nouveau_connector_create(struct drm_device *dev,
1239                          const struct dcb_output *dcbe)
1240 {
1241         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1242         struct nouveau_drm *drm = nouveau_drm(dev);
1243         struct nouveau_display *disp = nouveau_display(dev);
1244         struct nouveau_connector *nv_connector = NULL;
1245         struct drm_connector *connector;
1246         struct drm_connector_list_iter conn_iter;
1247         char aux_name[48] = {0};
1248         int index = dcbe->connector;
1249         int type, ret = 0;
1250         bool dummy;
1251
1252         drm_connector_list_iter_begin(dev, &conn_iter);
1253         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1254                 nv_connector = nouveau_connector(connector);
1255                 if (nv_connector->index == index) {
1256                         drm_connector_list_iter_end(&conn_iter);
1257                         return connector;
1258                 }
1259         }
1260         drm_connector_list_iter_end(&conn_iter);
1261
1262         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1263         if (!nv_connector)
1264                 return ERR_PTR(-ENOMEM);
1265
1266         connector = &nv_connector->base;
1267         nv_connector->index = index;
1268
1269         /* attempt to parse vbios connector type and hotplug gpio */
1270         nv_connector->dcb = olddcb_conn(dev, index);
1271         if (nv_connector->dcb) {
1272                 u32 entry = ROM16(nv_connector->dcb[0]);
1273                 if (olddcb_conntab(dev)[3] >= 4)
1274                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1275
1276                 nv_connector->type = nv_connector->dcb[0];
1277                 if (drm_conntype_from_dcb(nv_connector->type) ==
1278                                           DRM_MODE_CONNECTOR_Unknown) {
1279                         NV_WARN(drm, "unknown connector type %02x\n",
1280                                 nv_connector->type);
1281                         nv_connector->type = DCB_CONNECTOR_NONE;
1282                 }
1283
1284                 /* Gigabyte NX85T */
1285                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1286                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1287                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1288                 }
1289
1290                 /* Gigabyte GV-NX86T512H */
1291                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1292                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1293                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1294                 }
1295         } else {
1296                 nv_connector->type = DCB_CONNECTOR_NONE;
1297         }
1298
1299         /* no vbios data, or an unknown dcb connector type - attempt to
1300          * figure out something suitable ourselves
1301          */
1302         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1303                 struct nouveau_drm *drm = nouveau_drm(dev);
1304                 struct dcb_table *dcbt = &drm->vbios.dcb;
1305                 u32 encoders = 0;
1306                 int i;
1307
1308                 for (i = 0; i < dcbt->entries; i++) {
1309                         if (dcbt->entry[i].connector == nv_connector->index)
1310                                 encoders |= (1 << dcbt->entry[i].type);
1311                 }
1312
1313                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1314                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1315                                 nv_connector->type = DCB_CONNECTOR_DP;
1316                         else
1317                                 nv_connector->type = DCB_CONNECTOR_eDP;
1318                 } else
1319                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1320                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1321                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1322                         else
1323                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1324                 } else
1325                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1326                         nv_connector->type = DCB_CONNECTOR_VGA;
1327                 } else
1328                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1329                         nv_connector->type = DCB_CONNECTOR_LVDS;
1330                 } else
1331                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1332                         nv_connector->type = DCB_CONNECTOR_TV_0;
1333                 }
1334         }
1335
1336         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1337         case DRM_MODE_CONNECTOR_LVDS:
1338                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1339                 if (ret) {
1340                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1341                         kfree(nv_connector);
1342                         return ERR_PTR(ret);
1343                 }
1344
1345                 funcs = &nouveau_connector_funcs_lvds;
1346                 break;
1347         case DRM_MODE_CONNECTOR_DisplayPort:
1348         case DRM_MODE_CONNECTOR_eDP:
1349                 nv_connector->aux.dev = dev->dev;
1350                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1351                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1352                          dcbe->hasht, dcbe->hashm);
1353                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1354                 ret = drm_dp_aux_register(&nv_connector->aux);
1355                 if (ret) {
1356                         NV_ERROR(drm, "failed to register aux channel\n");
1357                         kfree(nv_connector);
1358                         return ERR_PTR(ret);
1359                 }
1360                 funcs = &nouveau_connector_funcs;
1361                 break;
1362         default:
1363                 funcs = &nouveau_connector_funcs;
1364                 break;
1365         }
1366
1367         /* HDMI 3D support */
1368         if ((disp->disp.object.oclass >= G82_DISP)
1369             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1370                 || (type == DRM_MODE_CONNECTOR_eDP)
1371                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1372                 connector->stereo_allowed = true;
1373
1374         /* defaults, will get overridden in detect() */
1375         connector->interlace_allowed = false;
1376         connector->doublescan_allowed = false;
1377
1378         drm_connector_init(dev, connector, funcs, type);
1379         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1380
1381         connector->funcs->reset(connector);
1382         nouveau_conn_attach_properties(connector);
1383
1384         /* Default scaling mode */
1385         switch (nv_connector->type) {
1386         case DCB_CONNECTOR_LVDS:
1387         case DCB_CONNECTOR_LVDS_SPWG:
1388         case DCB_CONNECTOR_eDP:
1389                 /* see note in nouveau_connector_set_property() */
1390                 if (disp->disp.object.oclass < NV50_DISP) {
1391                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1392                         break;
1393                 }
1394                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1395                 break;
1396         default:
1397                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1398                 break;
1399         }
1400
1401         /* dithering properties */
1402         switch (nv_connector->type) {
1403         case DCB_CONNECTOR_TV_0:
1404         case DCB_CONNECTOR_TV_1:
1405         case DCB_CONNECTOR_TV_3:
1406         case DCB_CONNECTOR_VGA:
1407                 break;
1408         default:
1409                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1410                 break;
1411         }
1412
1413         switch (type) {
1414         case DRM_MODE_CONNECTOR_DisplayPort:
1415         case DRM_MODE_CONNECTOR_eDP:
1416                 drm_dp_cec_register_connector(&nv_connector->aux,
1417                                               connector->name, dev->dev);
1418                 break;
1419         }
1420
1421         ret = nvif_notify_init(&disp->disp.object, nouveau_connector_hotplug,
1422                                true, NV04_DISP_NTFY_CONN,
1423                                &(struct nvif_notify_conn_req_v0) {
1424                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1425                                 .conn = index,
1426                                },
1427                                sizeof(struct nvif_notify_conn_req_v0),
1428                                sizeof(struct nvif_notify_conn_rep_v0),
1429                                &nv_connector->hpd);
1430         if (ret)
1431                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1432         else
1433                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1434
1435         drm_connector_register(connector);
1436         return connector;
1437 }