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                 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_connector *nv_connector = nouveau_connector(connector);
 250         struct nouveau_conn_atom *asyc;
 251
 252         if (drm_drv_uses_atomic_modeset(connector->dev)) {
 253                 if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 254                         return;
 255
 256                 if (connector->state)
 257                         nouveau_conn_atomic_destroy_state(connector,
 258                                                           connector->state);
 259
 260                 __drm_atomic_helper_connector_reset(connector, &asyc->state);
 261         } else {
 262                 asyc = &nv_connector->properties_state;
 263         }
 264
 265         asyc->dither.mode = DITHERING_MODE_AUTO;
 266         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 267         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 268         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 269         asyc->procamp.color_vibrance = 150;
 270         asyc->procamp.vibrant_hue = 90;
 271
 272         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 273                 switch (connector->connector_type) {
 274                 case DRM_MODE_CONNECTOR_LVDS:
 275                         /* See note in nouveau_conn_atomic_set_property(). */
 276                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 277                         break;
 278                 default:
 279                         break;
 280                 }
 281         }
 282 }
 283
 284 void
 285 nouveau_conn_attach_properties(struct drm_connector *connector)
 286 {
 287         struct drm_device *dev = connector->dev;
 288         struct nouveau_display *disp = nouveau_display(dev);
 289         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 290         struct nouveau_conn_atom *armc;
 291
 292         if (drm_drv_uses_atomic_modeset(connector->dev))
 293                 armc = nouveau_conn_atom(connector->state);
 294         else
 295                 armc = &nv_connector->properties_state;
 296
 297         /* Init DVI-I specific properties. */
 298         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 299                 drm_object_attach_property(&connector->base, dev->mode_config.
 300                                            dvi_i_subconnector_property, 0);
 301
 302         /* Add overscan compensation options to digital outputs. */
 303         if (disp->underscan_property &&
 304             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 305              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 306              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 307              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 308                 drm_object_attach_property(&connector->base,
 309                                            disp->underscan_property,
 310                                            UNDERSCAN_OFF);
 311                 drm_object_attach_property(&connector->base,
 312                                            disp->underscan_hborder_property, 0);
 313                 drm_object_attach_property(&connector->base,
 314                                            disp->underscan_vborder_property, 0);
 315         }
 316
 317         /* Add hue and saturation options. */
 318         if (disp->vibrant_hue_property)
 319                 drm_object_attach_property(&connector->base,
 320                                            disp->vibrant_hue_property,
 321                                            armc->procamp.vibrant_hue);
 322         if (disp->color_vibrance_property)
 323                 drm_object_attach_property(&connector->base,
 324                                            disp->color_vibrance_property,
 325                                            armc->procamp.color_vibrance);
 326
 327         /* Scaling mode property. */
 328         switch (connector->connector_type) {
 329         case DRM_MODE_CONNECTOR_TV:
 330                 break;
 331         case DRM_MODE_CONNECTOR_VGA:
 332                 if (disp->disp.object.oclass < NV50_DISP)
 333                         break; /* Can only scale on DFPs. */
 334                 /* Fall-through. */
 335         default:
 336                 drm_object_attach_property(&connector->base, dev->mode_config.
 337                                            scaling_mode_property,
 338                                            armc->scaler.mode);
 339                 break;
 340         }
 341
 342         /* Dithering properties. */
 343         switch (connector->connector_type) {
 344         case DRM_MODE_CONNECTOR_TV:
 345         case DRM_MODE_CONNECTOR_VGA:
 346                 break;
 347         default:
 348                 if (disp->dithering_mode) {
 349                         drm_object_attach_property(&connector->base,
 350                                                    disp->dithering_mode,
 351                                                    armc->dither.mode);
 352                 }
 353                 if (disp->dithering_depth) {
 354                         drm_object_attach_property(&connector->base,
 355                                                    disp->dithering_depth,
 356                                                    armc->dither.depth);
 357                 }
 358                 break;
 359         }
 360 }
 361
 362 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 363 int nouveau_tv_disable = 0;
 364 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 365
 366 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 367 int nouveau_ignorelid = 0;
 368 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 369
 370 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 371 int nouveau_duallink = 1;
 372 module_param_named(duallink, nouveau_duallink, int, 0400);
 373
 374 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 375 int nouveau_hdmimhz = 0;
 376 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 377
 378 struct nouveau_encoder *
 379 find_encoder(struct drm_connector *connector, int type)
 380 {
 381         struct nouveau_encoder *nv_encoder;
 382         struct drm_encoder *enc;
 383
 384         drm_connector_for_each_possible_encoder(connector, enc) {
 385                 nv_encoder = nouveau_encoder(enc);
 386
 387                 if (type == DCB_OUTPUT_ANY ||
 388                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
 389                         return nv_encoder;
 390         }
 391
 392         return NULL;
 393 }
 394
 395 struct nouveau_connector *
 396 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
 397 {
 398         struct drm_device *dev = to_drm_encoder(encoder)->dev;
 399         struct drm_connector *drm_connector;
 400
 401         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 402                 if (drm_connector->encoder == to_drm_encoder(encoder))
 403                         return nouveau_connector(drm_connector);
 404         }
 405
 406         return NULL;
 407 }
 408
 409 static void
 410 nouveau_connector_destroy(struct drm_connector *connector)
 411 {
 412         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 413         nvif_notify_fini(&nv_connector->hpd);
 414         kfree(nv_connector->edid);
 415         drm_connector_unregister(connector);
 416         drm_connector_cleanup(connector);
 417         if (nv_connector->aux.transfer) {
 418                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 419                 drm_dp_aux_unregister(&nv_connector->aux);
 420                 kfree(nv_connector->aux.name);
 421         }
 422         kfree(connector);
 423 }
 424
 425 static struct nouveau_encoder *
 426 nouveau_connector_ddc_detect(struct drm_connector *connector)
 427 {
 428         struct drm_device *dev = connector->dev;
 429         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 430         struct drm_encoder *encoder;
 431         int ret;
 432         bool switcheroo_ddc = false;
 433
 434         drm_connector_for_each_possible_encoder(connector, encoder) {
 435                 nv_encoder = nouveau_encoder(encoder);
 436
 437                 switch (nv_encoder->dcb->type) {
 438                 case DCB_OUTPUT_DP:
 439                         ret = nouveau_dp_detect(nv_encoder);
 440                         if (ret == NOUVEAU_DP_MST)
 441                                 return NULL;
 442                         else if (ret == NOUVEAU_DP_SST)
 443                                 found = nv_encoder;
 444
 445                         break;
 446                 case DCB_OUTPUT_LVDS:
 447                         switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 448                                             VGA_SWITCHEROO_CAN_SWITCH_DDC);
 449                 /* fall-through */
 450                 default:
 451                         if (!nv_encoder->i2c)
 452                                 break;
 453
 454                         if (switcheroo_ddc)
 455                                 vga_switcheroo_lock_ddc(dev->pdev);
 456                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 457                                 found = nv_encoder;
 458                         if (switcheroo_ddc)
 459                                 vga_switcheroo_unlock_ddc(dev->pdev);
 460
 461                         break;
 462                 }
 463                 if (found)
 464                         break;
 465         }
 466
 467         return found;
 468 }
 469
 470 static struct nouveau_encoder *
 471 nouveau_connector_of_detect(struct drm_connector *connector)
 472 {
 473 #ifdef __powerpc__
 474         struct drm_device *dev = connector->dev;
 475         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 476         struct nouveau_encoder *nv_encoder;
 477         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 478
 479         if (!dn ||
 480             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 481               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 482                 return NULL;
 483
 484         for_each_child_of_node(dn, cn) {
 485                 const char *name = of_get_property(cn, "name", NULL);
 486                 const void *edid = of_get_property(cn, "EDID", NULL);
 487                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 488
 489                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 490                         nv_connector->edid =
 491                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 492                         of_node_put(cn);
 493                         return nv_encoder;
 494                 }
 495         }
 496 #endif
 497         return NULL;
 498 }
 499
 500 static void
 501 nouveau_connector_set_encoder(struct drm_connector *connector,
 502                               struct nouveau_encoder *nv_encoder)
 503 {
 504         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 505         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 506         struct drm_device *dev = connector->dev;
 507
 508         if (nv_connector->detected_encoder == nv_encoder)
 509                 return;
 510         nv_connector->detected_encoder = nv_encoder;
 511
 512         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 513                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 514                         connector->interlace_allowed =
 515                                 nv_encoder->caps.dp_interlace;
 516                 else
 517                         connector->interlace_allowed = true;
 518                 connector->doublescan_allowed = true;
 519         } else
 520         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 521             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 522                 connector->doublescan_allowed = false;
 523                 connector->interlace_allowed = false;
 524         } else {
 525                 connector->doublescan_allowed = true;
 526                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 527                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 528                      (dev->pdev->device & 0x0ff0) != 0x0100 &&
 529                      (dev->pdev->device & 0x0ff0) != 0x0150))
 530                         /* HW is broken */
 531                         connector->interlace_allowed = false;
 532                 else
 533                         connector->interlace_allowed = true;
 534         }
 535
 536         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 537                 drm_object_property_set_value(&connector->base,
 538                         dev->mode_config.dvi_i_subconnector_property,
 539                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 540                         DRM_MODE_SUBCONNECTOR_DVID :
 541                         DRM_MODE_SUBCONNECTOR_DVIA);
 542         }
 543 }
 544
 545 static enum drm_connector_status
 546 nouveau_connector_detect(struct drm_connector *connector, bool force)
 547 {
 548         struct drm_device *dev = connector->dev;
 549         struct nouveau_drm *drm = nouveau_drm(dev);
 550         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 551         struct nouveau_encoder *nv_encoder = NULL;
 552         struct nouveau_encoder *nv_partner;
 553         struct i2c_adapter *i2c;
 554         int type;
 555         int ret;
 556         enum drm_connector_status conn_status = connector_status_disconnected;
 557
 558         /* Cleanup the previous EDID block. */
 559         if (nv_connector->edid) {
 560                 drm_connector_update_edid_property(connector, NULL);
 561                 kfree(nv_connector->edid);
 562                 nv_connector->edid = NULL;
 563         }
 564
 565         /* Outputs are only polled while runtime active, so resuming the
 566          * device here is unnecessary (and would deadlock upon runtime suspend
 567          * because it waits for polling to finish). We do however, want to
 568          * prevent the autosuspend timer from elapsing during this operation
 569          * if possible.
 570          */
 571         if (drm_kms_helper_is_poll_worker()) {
 572                 pm_runtime_get_noresume(dev->dev);
 573         } else {
 574                 ret = pm_runtime_get_sync(dev->dev);
 575                 if (ret < 0 && ret != -EACCES)
 576                         return conn_status;
 577         }
 578
 579         nv_encoder = nouveau_connector_ddc_detect(connector);
 580         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 581                 if ((vga_switcheroo_handler_flags() &
 582                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 583                     nv_connector->type == DCB_CONNECTOR_LVDS)
 584                         nv_connector->edid = drm_get_edid_switcheroo(connector,
 585                                                                      i2c);
 586                 else
 587                         nv_connector->edid = drm_get_edid(connector, i2c);
 588
 589                 drm_connector_update_edid_property(connector,
 590                                                         nv_connector->edid);
 591                 if (!nv_connector->edid) {
 592                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 593                                  connector->name);
 594                         goto detect_analog;
 595                 }
 596
 597                 /* Override encoder type for DVI-I based on whether EDID
 598                  * says the display is digital or analog, both use the
 599                  * same i2c channel so the value returned from ddc_detect
 600                  * isn't necessarily correct.
 601                  */
 602                 nv_partner = NULL;
 603                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 604                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 605                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 606                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 607
 608                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 609                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 610                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 611                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 612                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 613                                 type = DCB_OUTPUT_TMDS;
 614                         else
 615                                 type = DCB_OUTPUT_ANALOG;
 616
 617                         nv_encoder = find_encoder(connector, type);
 618                 }
 619
 620                 nouveau_connector_set_encoder(connector, nv_encoder);
 621                 conn_status = connector_status_connected;
 622                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 623                 goto out;
 624         }
 625
 626         nv_encoder = nouveau_connector_of_detect(connector);
 627         if (nv_encoder) {
 628                 nouveau_connector_set_encoder(connector, nv_encoder);
 629                 conn_status = connector_status_connected;
 630                 goto out;
 631         }
 632
 633 detect_analog:
 634         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 635         if (!nv_encoder && !nouveau_tv_disable)
 636                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 637         if (nv_encoder && force) {
 638                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 639                 const struct drm_encoder_helper_funcs *helper =
 640                                                 encoder->helper_private;
 641
 642                 if (helper->detect(encoder, connector) ==
 643                                                 connector_status_connected) {
 644                         nouveau_connector_set_encoder(connector, nv_encoder);
 645                         conn_status = connector_status_connected;
 646                         goto out;
 647                 }
 648
 649         }
 650
 651  out:
 652
 653         pm_runtime_mark_last_busy(dev->dev);
 654         pm_runtime_put_autosuspend(dev->dev);
 655
 656         return conn_status;
 657 }
 658
 659 static enum drm_connector_status
 660 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 661 {
 662         struct drm_device *dev = connector->dev;
 663         struct nouveau_drm *drm = nouveau_drm(dev);
 664         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 665         struct nouveau_encoder *nv_encoder = NULL;
 666         enum drm_connector_status status = connector_status_disconnected;
 667
 668         /* Cleanup the previous EDID block. */
 669         if (nv_connector->edid) {
 670                 drm_connector_update_edid_property(connector, NULL);
 671                 kfree(nv_connector->edid);
 672                 nv_connector->edid = NULL;
 673         }
 674
 675         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 676         if (!nv_encoder)
 677                 return connector_status_disconnected;
 678
 679         /* Try retrieving EDID via DDC */
 680         if (!drm->vbios.fp_no_ddc) {
 681                 status = nouveau_connector_detect(connector, force);
 682                 if (status == connector_status_connected)
 683                         goto out;
 684         }
 685
 686         /* On some laptops (Sony, i'm looking at you) there appears to
 687          * be no direct way of accessing the panel's EDID.  The only
 688          * option available to us appears to be to ask ACPI for help..
 689          *
 690          * It's important this check's before trying straps, one of the
 691          * said manufacturer's laptops are configured in such a way
 692          * the nouveau decides an entry in the VBIOS FP mode table is
 693          * valid - it's not (rh#613284)
 694          */
 695         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 696                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 697                         status = connector_status_connected;
 698                         goto out;
 699                 }
 700         }
 701
 702         /* If no EDID found above, and the VBIOS indicates a hardcoded
 703          * modeline is avalilable for the panel, set it as the panel's
 704          * native mode and exit.
 705          */
 706         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 707             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 708                 status = connector_status_connected;
 709                 goto out;
 710         }
 711
 712         /* Still nothing, some VBIOS images have a hardcoded EDID block
 713          * stored for the panel stored in them.
 714          */
 715         if (!drm->vbios.fp_no_ddc) {
 716                 struct edid *edid =
 717                         (struct edid *)nouveau_bios_embedded_edid(dev);
 718                 if (edid) {
 719                         nv_connector->edid =
 720                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 721                         if (nv_connector->edid)
 722                                 status = connector_status_connected;
 723                 }
 724         }
 725
 726 out:
 727 #if defined(CONFIG_ACPI_BUTTON) || \
 728         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 729         if (status == connector_status_connected &&
 730             !nouveau_ignorelid && !acpi_lid_open())
 731                 status = connector_status_unknown;
 732 #endif
 733
 734         drm_connector_update_edid_property(connector, nv_connector->edid);
 735         nouveau_connector_set_encoder(connector, nv_encoder);
 736         return status;
 737 }
 738
 739 static void
 740 nouveau_connector_force(struct drm_connector *connector)
 741 {
 742         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 743         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 744         struct nouveau_encoder *nv_encoder;
 745         int type;
 746
 747         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 748                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 749                         type = DCB_OUTPUT_TMDS;
 750                 else
 751                         type = DCB_OUTPUT_ANALOG;
 752         } else
 753                 type = DCB_OUTPUT_ANY;
 754
 755         nv_encoder = find_encoder(connector, type);
 756         if (!nv_encoder) {
 757                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 758                          connector->name);
 759                 connector->status = connector_status_disconnected;
 760                 return;
 761         }
 762
 763         nouveau_connector_set_encoder(connector, nv_encoder);
 764 }
 765
 766 static int
 767 nouveau_connector_set_property(struct drm_connector *connector,
 768                                struct drm_property *property, uint64_t value)
 769 {
 770         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 771         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 772         struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
 773         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 774         int ret;
 775
 776         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 777                                                     &asyc->state,
 778                                                     property, value);
 779         if (ret) {
 780                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 781                         return get_slave_funcs(encoder)->set_property(
 782                                 encoder, connector, property, value);
 783                 return ret;
 784         }
 785
 786         nv_connector->scaling_mode = asyc->scaler.mode;
 787         nv_connector->dithering_mode = asyc->dither.mode;
 788
 789         if (connector->encoder && connector->encoder->crtc) {
 790                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 791                                               &connector->encoder->crtc->mode,
 792                                                connector->encoder->crtc->x,
 793                                                connector->encoder->crtc->y,
 794                                                NULL);
 795                 if (!ret)
 796                         return -EINVAL;
 797         }
 798
 799         return 0;
 800 }
 801
 802 struct moderec {
 803         int hdisplay;
 804         int vdisplay;
 805 };
 806
 807 static struct moderec scaler_modes[] = {
 808         { 1920, 1200 },
 809         { 1920, 1080 },
 810         { 1680, 1050 },
 811         { 1600, 1200 },
 812         { 1400, 1050 },
 813         { 1280, 1024 },
 814         { 1280, 960 },
 815         { 1152, 864 },
 816         { 1024, 768 },
 817         { 800, 600 },
 818         { 720, 400 },
 819         { 640, 480 },
 820         { 640, 400 },
 821         { 640, 350 },
 822         {}
 823 };
 824
 825 static int
 826 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 827 {
 828         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 829         struct drm_display_mode *native = nv_connector->native_mode, *m;
 830         struct drm_device *dev = connector->dev;
 831         struct moderec *mode = &scaler_modes[0];
 832         int modes = 0;
 833
 834         if (!native)
 835                 return 0;
 836
 837         while (mode->hdisplay) {
 838                 if (mode->hdisplay <= native->hdisplay &&
 839                     mode->vdisplay <= native->vdisplay &&
 840                     (mode->hdisplay != native->hdisplay ||
 841                      mode->vdisplay != native->vdisplay)) {
 842                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 843                                          drm_mode_vrefresh(native), false,
 844                                          false, false);
 845                         if (!m)
 846                                 continue;
 847
 848                         drm_mode_probed_add(connector, m);
 849                         modes++;
 850                 }
 851
 852                 mode++;
 853         }
 854
 855         return modes;
 856 }
 857
 858 static void
 859 nouveau_connector_detect_depth(struct drm_connector *connector)
 860 {
 861         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 862         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 863         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 864         struct nvbios *bios = &drm->vbios;
 865         struct drm_display_mode *mode = nv_connector->native_mode;
 866         bool duallink;
 867
 868         /* if the edid is feeling nice enough to provide this info, use it */
 869         if (nv_connector->edid && connector->display_info.bpc)
 870                 return;
 871
 872         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 873         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 874                 connector->display_info.bpc = 6;
 875                 return;
 876         }
 877
 878         /* we're out of options unless we're LVDS, default to 8bpc */
 879         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 880                 connector->display_info.bpc = 8;
 881                 return;
 882         }
 883
 884         connector->display_info.bpc = 6;
 885
 886         /* LVDS: panel straps */
 887         if (bios->fp_no_ddc) {
 888                 if (bios->fp.if_is_24bit)
 889                         connector->display_info.bpc = 8;
 890                 return;
 891         }
 892
 893         /* LVDS: DDC panel, need to first determine the number of links to
 894          * know which if_is_24bit flag to check...
 895          */
 896         if (nv_connector->edid &&
 897             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 898                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 899         else
 900                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 901
 902         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 903             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 904                 connector->display_info.bpc = 8;
 905 }
 906
 907 static int
 908 nouveau_connector_late_register(struct drm_connector *connector)
 909 {
 910         int ret;
 911
 912         ret = nouveau_backlight_init(connector);
 913
 914         return ret;
 915 }
 916
 917 static void
 918 nouveau_connector_early_unregister(struct drm_connector *connector)
 919 {
 920         nouveau_backlight_fini(connector);
 921 }
 922
 923 static int
 924 nouveau_connector_get_modes(struct drm_connector *connector)
 925 {
 926         struct drm_device *dev = connector->dev;
 927         struct nouveau_drm *drm = nouveau_drm(dev);
 928         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 929         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 930         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 931         int ret = 0;
 932
 933         /* destroy the native mode, the attached monitor could have changed.
 934          */
 935         if (nv_connector->native_mode) {
 936                 drm_mode_destroy(dev, nv_connector->native_mode);
 937                 nv_connector->native_mode = NULL;
 938         }
 939
 940         if (nv_connector->edid)
 941                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 942         else
 943         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 944             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 945              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 946                 struct drm_display_mode mode;
 947
 948                 nouveau_bios_fp_mode(dev, &mode);
 949                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 950         }
 951
 952         /* Determine display colour depth for everything except LVDS now,
 953          * DP requires this before mode_valid() is called.
 954          */
 955         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 956                 nouveau_connector_detect_depth(connector);
 957
 958         /* Find the native mode if this is a digital panel, if we didn't
 959          * find any modes through DDC previously add the native mode to
 960          * the list of modes.
 961          */
 962         if (!nv_connector->native_mode)
 963                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 964         if (ret == 0 && nv_connector->native_mode) {
 965                 struct drm_display_mode *mode;
 966
 967                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 968                 drm_mode_probed_add(connector, mode);
 969                 ret = 1;
 970         }
 971
 972         /* Determine LVDS colour depth, must happen after determining
 973          * "native" mode as some VBIOS tables require us to use the
 974          * pixel clock as part of the lookup...
 975          */
 976         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 977                 nouveau_connector_detect_depth(connector);
 978
 979         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 980                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 981
 982         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 983             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 984             nv_connector->type == DCB_CONNECTOR_eDP)
 985                 ret += nouveau_connector_scaler_modes_add(connector);
 986
 987         return ret;
 988 }
 989
 990 static unsigned
 991 get_tmds_link_bandwidth(struct drm_connector *connector)
 992 {
 993         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 994         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 995         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 996         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 997         struct drm_display_info *info = NULL;
 998         unsigned duallink_scale =
 999                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1000
1001         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1002                 info = &nv_connector->base.display_info;
1003                 duallink_scale = 1;
1004         }
1005
1006         if (info) {
1007                 if (nouveau_hdmimhz > 0)
1008                         return nouveau_hdmimhz * 1000;
1009                 /* Note: these limits are conservative, some Fermi's
1010                  * can do 297 MHz. Unclear how this can be determined.
1011                  */
1012                 if (drm->client.device.info.chipset >= 0x120) {
1013                         const int max_tmds_clock =
1014                                 info->hdmi.scdc.scrambling.supported ?
1015                                 594000 : 340000;
1016                         return info->max_tmds_clock ?
1017                                 min(info->max_tmds_clock, max_tmds_clock) :
1018                                 max_tmds_clock;
1019                 }
1020                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1021                         return 297000;
1022                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1023                         return 225000;
1024         }
1025
1026         if (dcb->location != DCB_LOC_ON_CHIP ||
1027             drm->client.device.info.chipset >= 0x46)
1028                 return 165000 * duallink_scale;
1029         else if (drm->client.device.info.chipset >= 0x40)
1030                 return 155000 * duallink_scale;
1031         else if (drm->client.device.info.chipset >= 0x18)
1032                 return 135000 * duallink_scale;
1033         else
1034                 return 112000 * duallink_scale;
1035 }
1036
1037 enum drm_mode_status
1038 nouveau_conn_mode_clock_valid(const struct drm_display_mode *mode,
1039                               const unsigned min_clock,
1040                               const unsigned max_clock,
1041                               unsigned int *clock_out)
1042 {
1043         unsigned int clock = mode->clock;
1044
1045         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) ==
1046             DRM_MODE_FLAG_3D_FRAME_PACKING)
1047                 clock *= 2;
1048
1049         if (clock < min_clock)
1050                 return MODE_CLOCK_LOW;
1051         if (clock > max_clock)
1052                 return MODE_CLOCK_HIGH;
1053
1054         if (clock_out)
1055                 *clock_out = clock;
1056
1057         return MODE_OK;
1058 }
1059
1060 static enum drm_mode_status
1061 nouveau_connector_mode_valid(struct drm_connector *connector,
1062                              struct drm_display_mode *mode)
1063 {
1064         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1065         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1066         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1067         unsigned min_clock = 25000, max_clock = min_clock;
1068
1069         switch (nv_encoder->dcb->type) {
1070         case DCB_OUTPUT_LVDS:
1071                 if (nv_connector->native_mode &&
1072                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1073                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1074                         return MODE_PANEL;
1075
1076                 min_clock = 0;
1077                 max_clock = 400000;
1078                 break;
1079         case DCB_OUTPUT_TMDS:
1080                 max_clock = get_tmds_link_bandwidth(connector);
1081                 break;
1082         case DCB_OUTPUT_ANALOG:
1083                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1084                 if (!max_clock)
1085                         max_clock = 350000;
1086                 break;
1087         case DCB_OUTPUT_TV:
1088                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1089         case DCB_OUTPUT_DP:
1090                 return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1091         default:
1092                 BUG();
1093                 return MODE_BAD;
1094         }
1095
1096         return nouveau_conn_mode_clock_valid(mode, min_clock, max_clock,
1097                                              NULL);
1098 }
1099
1100 static struct drm_encoder *
1101 nouveau_connector_best_encoder(struct drm_connector *connector)
1102 {
1103         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1104
1105         if (nv_connector->detected_encoder)
1106                 return to_drm_encoder(nv_connector->detected_encoder);
1107
1108         return NULL;
1109 }
1110
1111 static const struct drm_connector_helper_funcs
1112 nouveau_connector_helper_funcs = {
1113         .get_modes = nouveau_connector_get_modes,
1114         .mode_valid = nouveau_connector_mode_valid,
1115         .best_encoder = nouveau_connector_best_encoder,
1116 };
1117
1118 static const struct drm_connector_funcs
1119 nouveau_connector_funcs = {
1120         .dpms = drm_helper_connector_dpms,
1121         .reset = nouveau_conn_reset,
1122         .detect = nouveau_connector_detect,
1123         .force = nouveau_connector_force,
1124         .fill_modes = drm_helper_probe_single_connector_modes,
1125         .set_property = nouveau_connector_set_property,
1126         .destroy = nouveau_connector_destroy,
1127         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1128         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1129         .atomic_set_property = nouveau_conn_atomic_set_property,
1130         .atomic_get_property = nouveau_conn_atomic_get_property,
1131         .late_register = nouveau_connector_late_register,
1132         .early_unregister = nouveau_connector_early_unregister,
1133 };
1134
1135 static const struct drm_connector_funcs
1136 nouveau_connector_funcs_lvds = {
1137         .dpms = drm_helper_connector_dpms,
1138         .reset = nouveau_conn_reset,
1139         .detect = nouveau_connector_detect_lvds,
1140         .force = nouveau_connector_force,
1141         .fill_modes = drm_helper_probe_single_connector_modes,
1142         .set_property = nouveau_connector_set_property,
1143         .destroy = nouveau_connector_destroy,
1144         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1145         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1146         .atomic_set_property = nouveau_conn_atomic_set_property,
1147         .atomic_get_property = nouveau_conn_atomic_get_property,
1148         .late_register = nouveau_connector_late_register,
1149         .early_unregister = nouveau_connector_early_unregister,
1150 };
1151
1152 static int
1153 nouveau_connector_hotplug(struct nvif_notify *notify)
1154 {
1155         struct nouveau_connector *nv_connector =
1156                 container_of(notify, typeof(*nv_connector), hpd);
1157         struct drm_connector *connector = &nv_connector->base;
1158         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1159         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1160         const char *name = connector->name;
1161         struct nouveau_encoder *nv_encoder;
1162         int ret;
1163         bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1164
1165         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1166                 NV_DEBUG(drm, "service %s\n", name);
1167                 drm_dp_cec_irq(&nv_connector->aux);
1168                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1169                         nv50_mstm_service(nv_encoder->dp.mstm);
1170
1171                 return NVIF_NOTIFY_KEEP;
1172         }
1173
1174         ret = pm_runtime_get(drm->dev->dev);
1175         if (ret == 0) {
1176                 /* We can't block here if there's a pending PM request
1177                  * running, as we'll deadlock nouveau_display_fini() when it
1178                  * calls nvif_put() on our nvif_notify struct. So, simply
1179                  * defer the hotplug event until the device finishes resuming
1180                  */
1181                 NV_DEBUG(drm, "Deferring HPD on %s until runtime resume\n",
1182                          name);
1183                 schedule_work(&drm->hpd_work);
1184
1185                 pm_runtime_put_noidle(drm->dev->dev);
1186                 return NVIF_NOTIFY_KEEP;
1187         } else if (ret != 1 && ret != -EACCES) {
1188                 NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
1189                         name, ret);
1190                 return NVIF_NOTIFY_DROP;
1191         }
1192
1193         if (!plugged)
1194                 drm_dp_cec_unset_edid(&nv_connector->aux);
1195         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1196         if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1197                 if (!plugged)
1198                         nv50_mstm_remove(nv_encoder->dp.mstm);
1199         }
1200
1201         drm_helper_hpd_irq_event(connector->dev);
1202
1203         pm_runtime_mark_last_busy(drm->dev->dev);
1204         pm_runtime_put_autosuspend(drm->dev->dev);
1205         return NVIF_NOTIFY_KEEP;
1206 }
1207
1208 static ssize_t
1209 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1210 {
1211         struct nouveau_connector *nv_connector =
1212                 container_of(obj, typeof(*nv_connector), aux);
1213         struct nouveau_encoder *nv_encoder;
1214         struct nvkm_i2c_aux *aux;
1215         u8 size = msg->size;
1216         int ret;
1217
1218         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1219         if (!nv_encoder || !(aux = nv_encoder->aux))
1220                 return -ENODEV;
1221         if (WARN_ON(msg->size > 16))
1222                 return -E2BIG;
1223
1224         ret = nvkm_i2c_aux_acquire(aux);
1225         if (ret)
1226                 return ret;
1227
1228         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1229                                 msg->buffer, &size);
1230         nvkm_i2c_aux_release(aux);
1231         if (ret >= 0) {
1232                 msg->reply = ret;
1233                 return size;
1234         }
1235
1236         return ret;
1237 }
1238
1239 static int
1240 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1241 {
1242         switch (dcb) {
1243         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1244         case DCB_CONNECTOR_TV_0     :
1245         case DCB_CONNECTOR_TV_1     :
1246         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1247         case DCB_CONNECTOR_DMS59_0  :
1248         case DCB_CONNECTOR_DMS59_1  :
1249         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1250         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1251         case DCB_CONNECTOR_LVDS     :
1252         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1253         case DCB_CONNECTOR_DMS59_DP0:
1254         case DCB_CONNECTOR_DMS59_DP1:
1255         case DCB_CONNECTOR_DP       :
1256         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1257         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1258         case DCB_CONNECTOR_HDMI_0   :
1259         case DCB_CONNECTOR_HDMI_1   :
1260         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1261         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1262         default:
1263                 break;
1264         }
1265
1266         return DRM_MODE_CONNECTOR_Unknown;
1267 }
1268
1269 struct drm_connector *
1270 nouveau_connector_create(struct drm_device *dev,
1271                          const struct dcb_output *dcbe)
1272 {
1273         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1274         struct nouveau_drm *drm = nouveau_drm(dev);
1275         struct nouveau_display *disp = nouveau_display(dev);
1276         struct nouveau_connector *nv_connector = NULL;
1277         struct drm_connector *connector;
1278         struct drm_connector_list_iter conn_iter;
1279         char aux_name[48] = {0};
1280         int index = dcbe->connector;
1281         int type, ret = 0;
1282         bool dummy;
1283
1284         drm_connector_list_iter_begin(dev, &conn_iter);
1285         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1286                 nv_connector = nouveau_connector(connector);
1287                 if (nv_connector->index == index) {
1288                         drm_connector_list_iter_end(&conn_iter);
1289                         return connector;
1290                 }
1291         }
1292         drm_connector_list_iter_end(&conn_iter);
1293
1294         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1295         if (!nv_connector)
1296                 return ERR_PTR(-ENOMEM);
1297
1298         connector = &nv_connector->base;
1299         nv_connector->index = index;
1300
1301         /* attempt to parse vbios connector type and hotplug gpio */
1302         nv_connector->dcb = olddcb_conn(dev, index);
1303         if (nv_connector->dcb) {
1304                 u32 entry = ROM16(nv_connector->dcb[0]);
1305                 if (olddcb_conntab(dev)[3] >= 4)
1306                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1307
1308                 nv_connector->type = nv_connector->dcb[0];
1309                 if (drm_conntype_from_dcb(nv_connector->type) ==
1310                                           DRM_MODE_CONNECTOR_Unknown) {
1311                         NV_WARN(drm, "unknown connector type %02x\n",
1312                                 nv_connector->type);
1313                         nv_connector->type = DCB_CONNECTOR_NONE;
1314                 }
1315
1316                 /* Gigabyte NX85T */
1317                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1318                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1319                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1320                 }
1321
1322                 /* Gigabyte GV-NX86T512H */
1323                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1324                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1325                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1326                 }
1327         } else {
1328                 nv_connector->type = DCB_CONNECTOR_NONE;
1329         }
1330
1331         /* no vbios data, or an unknown dcb connector type - attempt to
1332          * figure out something suitable ourselves
1333          */
1334         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1335                 struct nouveau_drm *drm = nouveau_drm(dev);
1336                 struct dcb_table *dcbt = &drm->vbios.dcb;
1337                 u32 encoders = 0;
1338                 int i;
1339
1340                 for (i = 0; i < dcbt->entries; i++) {
1341                         if (dcbt->entry[i].connector == nv_connector->index)
1342                                 encoders |= (1 << dcbt->entry[i].type);
1343                 }
1344
1345                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1346                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1347                                 nv_connector->type = DCB_CONNECTOR_DP;
1348                         else
1349                                 nv_connector->type = DCB_CONNECTOR_eDP;
1350                 } else
1351                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1352                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1353                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1354                         else
1355                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1356                 } else
1357                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1358                         nv_connector->type = DCB_CONNECTOR_VGA;
1359                 } else
1360                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1361                         nv_connector->type = DCB_CONNECTOR_LVDS;
1362                 } else
1363                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1364                         nv_connector->type = DCB_CONNECTOR_TV_0;
1365                 }
1366         }
1367
1368         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1369         case DRM_MODE_CONNECTOR_LVDS:
1370                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1371                 if (ret) {
1372                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1373                         kfree(nv_connector);
1374                         return ERR_PTR(ret);
1375                 }
1376
1377                 funcs = &nouveau_connector_funcs_lvds;
1378                 break;
1379         case DRM_MODE_CONNECTOR_DisplayPort:
1380         case DRM_MODE_CONNECTOR_eDP:
1381                 nv_connector->aux.dev = connector->kdev;
1382                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1383                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1384                          dcbe->hasht, dcbe->hashm);
1385                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1386                 ret = drm_dp_aux_register(&nv_connector->aux);
1387                 if (ret) {
1388                         NV_ERROR(drm, "failed to register aux channel\n");
1389                         kfree(nv_connector);
1390                         return ERR_PTR(ret);
1391                 }
1392                 funcs = &nouveau_connector_funcs;
1393                 break;
1394         default:
1395                 funcs = &nouveau_connector_funcs;
1396                 break;
1397         }
1398
1399         /* HDMI 3D support */
1400         if ((disp->disp.object.oclass >= G82_DISP)
1401             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1402                 || (type == DRM_MODE_CONNECTOR_eDP)
1403                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1404                 connector->stereo_allowed = true;
1405
1406         /* defaults, will get overridden in detect() */
1407         connector->interlace_allowed = false;
1408         connector->doublescan_allowed = false;
1409
1410         drm_connector_init(dev, connector, funcs, type);
1411         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1412
1413         connector->funcs->reset(connector);
1414         nouveau_conn_attach_properties(connector);
1415
1416         /* Default scaling mode */
1417         switch (nv_connector->type) {
1418         case DCB_CONNECTOR_LVDS:
1419         case DCB_CONNECTOR_LVDS_SPWG:
1420         case DCB_CONNECTOR_eDP:
1421                 /* see note in nouveau_connector_set_property() */
1422                 if (disp->disp.object.oclass < NV50_DISP) {
1423                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1424                         break;
1425                 }
1426                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1427                 break;
1428         default:
1429                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1430                 break;
1431         }
1432
1433         /* dithering properties */
1434         switch (nv_connector->type) {
1435         case DCB_CONNECTOR_TV_0:
1436         case DCB_CONNECTOR_TV_1:
1437         case DCB_CONNECTOR_TV_3:
1438         case DCB_CONNECTOR_VGA:
1439                 break;
1440         default:
1441                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1442                 break;
1443         }
1444
1445         switch (type) {
1446         case DRM_MODE_CONNECTOR_DisplayPort:
1447         case DRM_MODE_CONNECTOR_eDP:
1448                 drm_dp_cec_register_connector(&nv_connector->aux, connector);
1449                 break;
1450         }
1451
1452         ret = nvif_notify_init(&disp->disp.object, nouveau_connector_hotplug,
1453                                true, NV04_DISP_NTFY_CONN,
1454                                &(struct nvif_notify_conn_req_v0) {
1455                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1456                                 .conn = index,
1457                                },
1458                                sizeof(struct nvif_notify_conn_req_v0),
1459                                sizeof(struct nvif_notify_conn_rep_v0),
1460                                &nv_connector->hpd);
1461         if (ret)
1462                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1463         else
1464                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1465
1466         drm_connector_register(connector);
1467         return connector;
1468 }