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/if0011.h>
  51
  52 struct drm_display_mode *
  53 nouveau_conn_native_mode(struct drm_connector *connector)
  54 {
  55         const struct drm_connector_helper_funcs *helper = connector->helper_private;
  56         struct nouveau_drm *drm = nouveau_drm(connector->dev);
  57         struct drm_device *dev = connector->dev;
  58         struct drm_display_mode *mode, *largest = NULL;
  59         int high_w = 0, high_h = 0, high_v = 0;
  60
  61         list_for_each_entry(mode, &connector->probed_modes, head) {
  62                 if (helper->mode_valid(connector, mode) != MODE_OK ||
  63                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
  64                         continue;
  65
  66                 /* Use preferred mode if there is one.. */
  67                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
  68                         NV_DEBUG(drm, "native mode from preferred\n");
  69                         return drm_mode_duplicate(dev, mode);
  70                 }
  71
  72                 /* Otherwise, take the resolution with the largest width, then
  73                  * height, then vertical refresh
  74                  */
  75                 if (mode->hdisplay < high_w)
  76                         continue;
  77
  78                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
  79                         continue;
  80
  81                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
  82                     drm_mode_vrefresh(mode) < high_v)
  83                         continue;
  84
  85                 high_w = mode->hdisplay;
  86                 high_h = mode->vdisplay;
  87                 high_v = drm_mode_vrefresh(mode);
  88                 largest = mode;
  89         }
  90
  91         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
  92                       high_w, high_h, high_v);
  93         return largest ? drm_mode_duplicate(dev, largest) : NULL;
  94 }
  95
  96 int
  97 nouveau_conn_atomic_get_property(struct drm_connector *connector,
  98                                  const struct drm_connector_state *state,
  99                                  struct drm_property *property, u64 *val)
 100 {
 101         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 102         struct nouveau_display *disp = nouveau_display(connector->dev);
 103         struct drm_device *dev = connector->dev;
 104
 105         if (property == dev->mode_config.scaling_mode_property)
 106                 *val = asyc->scaler.mode;
 107         else if (property == disp->underscan_property)
 108                 *val = asyc->scaler.underscan.mode;
 109         else if (property == disp->underscan_hborder_property)
 110                 *val = asyc->scaler.underscan.hborder;
 111         else if (property == disp->underscan_vborder_property)
 112                 *val = asyc->scaler.underscan.vborder;
 113         else if (property == disp->dithering_mode)
 114                 *val = asyc->dither.mode;
 115         else if (property == disp->dithering_depth)
 116                 *val = asyc->dither.depth;
 117         else if (property == disp->vibrant_hue_property)
 118                 *val = asyc->procamp.vibrant_hue;
 119         else if (property == disp->color_vibrance_property)
 120                 *val = asyc->procamp.color_vibrance;
 121         else
 122                 return -EINVAL;
 123
 124         return 0;
 125 }
 126
 127 int
 128 nouveau_conn_atomic_set_property(struct drm_connector *connector,
 129                                  struct drm_connector_state *state,
 130                                  struct drm_property *property, u64 val)
 131 {
 132         struct drm_device *dev = connector->dev;
 133         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 134         struct nouveau_display *disp = nouveau_display(dev);
 135
 136         if (property == dev->mode_config.scaling_mode_property) {
 137                 switch (val) {
 138                 case DRM_MODE_SCALE_NONE:
 139                         /* We allow 'None' for EDID modes, even on a fixed
 140                          * panel (some exist with support for lower refresh
 141                          * rates, which people might want to use for power-
 142                          * saving purposes).
 143                          *
 144                          * Non-EDID modes will force the use of GPU scaling
 145                          * to the native mode regardless of this setting.
 146                          */
 147                         switch (connector->connector_type) {
 148                         case DRM_MODE_CONNECTOR_LVDS:
 149                         case DRM_MODE_CONNECTOR_eDP:
 150                                 /* ... except prior to G80, where the code
 151                                  * doesn't support such things.
 152                                  */
 153                                 if (disp->disp.object.oclass < NV50_DISP)
 154                                         return -EINVAL;
 155                                 break;
 156                         default:
 157                                 break;
 158                         }
 159                         break;
 160                 case DRM_MODE_SCALE_FULLSCREEN:
 161                 case DRM_MODE_SCALE_CENTER:
 162                 case DRM_MODE_SCALE_ASPECT:
 163                         break;
 164                 default:
 165                         return -EINVAL;
 166                 }
 167
 168                 if (asyc->scaler.mode != val) {
 169                         asyc->scaler.mode = val;
 170                         asyc->set.scaler = true;
 171                 }
 172         } else
 173         if (property == disp->underscan_property) {
 174                 if (asyc->scaler.underscan.mode != val) {
 175                         asyc->scaler.underscan.mode = val;
 176                         asyc->set.scaler = true;
 177                 }
 178         } else
 179         if (property == disp->underscan_hborder_property) {
 180                 if (asyc->scaler.underscan.hborder != val) {
 181                         asyc->scaler.underscan.hborder = val;
 182                         asyc->set.scaler = true;
 183                 }
 184         } else
 185         if (property == disp->underscan_vborder_property) {
 186                 if (asyc->scaler.underscan.vborder != val) {
 187                         asyc->scaler.underscan.vborder = val;
 188                         asyc->set.scaler = true;
 189                 }
 190         } else
 191         if (property == disp->dithering_mode) {
 192                 if (asyc->dither.mode != val) {
 193                         asyc->dither.mode = val;
 194                         asyc->set.dither = true;
 195                 }
 196         } else
 197         if (property == disp->dithering_depth) {
 198                 if (asyc->dither.mode != val) {
 199                         asyc->dither.depth = val;
 200                         asyc->set.dither = true;
 201                 }
 202         } else
 203         if (property == disp->vibrant_hue_property) {
 204                 if (asyc->procamp.vibrant_hue != val) {
 205                         asyc->procamp.vibrant_hue = val;
 206                         asyc->set.procamp = true;
 207                 }
 208         } else
 209         if (property == disp->color_vibrance_property) {
 210                 if (asyc->procamp.color_vibrance != val) {
 211                         asyc->procamp.color_vibrance = val;
 212                         asyc->set.procamp = true;
 213                 }
 214         } else {
 215                 return -EINVAL;
 216         }
 217
 218         return 0;
 219 }
 220
 221 void
 222 nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 223                                   struct drm_connector_state *state)
 224 {
 225         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 226         __drm_atomic_helper_connector_destroy_state(&asyc->state);
 227         kfree(asyc);
 228 }
 229
 230 struct drm_connector_state *
 231 nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 232 {
 233         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 234         struct nouveau_conn_atom *asyc;
 235         if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 236                 return NULL;
 237         __drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 238         asyc->dither = armc->dither;
 239         asyc->scaler = armc->scaler;
 240         asyc->procamp = armc->procamp;
 241         asyc->set.mask = 0;
 242         return &asyc->state;
 243 }
 244
 245 void
 246 nouveau_conn_reset(struct drm_connector *connector)
 247 {
 248         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 249         struct nouveau_conn_atom *asyc;
 250
 251         if (drm_drv_uses_atomic_modeset(connector->dev)) {
 252                 if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 253                         return;
 254
 255                 if (connector->state)
 256                         nouveau_conn_atomic_destroy_state(connector,
 257                                                           connector->state);
 258
 259                 __drm_atomic_helper_connector_reset(connector, &asyc->state);
 260         } else {
 261                 asyc = &nv_connector->properties_state;
 262         }
 263
 264         asyc->dither.mode = DITHERING_MODE_AUTO;
 265         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 266         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 267         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 268         asyc->procamp.color_vibrance = 150;
 269         asyc->procamp.vibrant_hue = 90;
 270
 271         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 272                 switch (connector->connector_type) {
 273                 case DRM_MODE_CONNECTOR_LVDS:
 274                         /* See note in nouveau_conn_atomic_set_property(). */
 275                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 276                         break;
 277                 default:
 278                         break;
 279                 }
 280         }
 281 }
 282
 283 void
 284 nouveau_conn_attach_properties(struct drm_connector *connector)
 285 {
 286         struct drm_device *dev = connector->dev;
 287         struct nouveau_display *disp = nouveau_display(dev);
 288         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 289         struct nouveau_conn_atom *armc;
 290
 291         if (drm_drv_uses_atomic_modeset(connector->dev))
 292                 armc = nouveau_conn_atom(connector->state);
 293         else
 294                 armc = &nv_connector->properties_state;
 295
 296         /* Init DVI-I specific properties. */
 297         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 298                 drm_object_attach_property(&connector->base, dev->mode_config.
 299                                            dvi_i_subconnector_property, 0);
 300
 301         /* Add overscan compensation options to digital outputs. */
 302         if (disp->underscan_property &&
 303             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 304              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 305              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 306              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 307                 drm_object_attach_property(&connector->base,
 308                                            disp->underscan_property,
 309                                            UNDERSCAN_OFF);
 310                 drm_object_attach_property(&connector->base,
 311                                            disp->underscan_hborder_property, 0);
 312                 drm_object_attach_property(&connector->base,
 313                                            disp->underscan_vborder_property, 0);
 314         }
 315
 316         /* Add hue and saturation options. */
 317         if (disp->vibrant_hue_property)
 318                 drm_object_attach_property(&connector->base,
 319                                            disp->vibrant_hue_property,
 320                                            armc->procamp.vibrant_hue);
 321         if (disp->color_vibrance_property)
 322                 drm_object_attach_property(&connector->base,
 323                                            disp->color_vibrance_property,
 324                                            armc->procamp.color_vibrance);
 325
 326         /* Scaling mode property. */
 327         switch (connector->connector_type) {
 328         case DRM_MODE_CONNECTOR_TV:
 329                 break;
 330         case DRM_MODE_CONNECTOR_VGA:
 331                 if (disp->disp.object.oclass < NV50_DISP)
 332                         break; /* Can only scale on DFPs. */
 333                 fallthrough;
 334         default:
 335                 drm_object_attach_property(&connector->base, dev->mode_config.
 336                                            scaling_mode_property,
 337                                            armc->scaler.mode);
 338                 break;
 339         }
 340
 341         /* Dithering properties. */
 342         switch (connector->connector_type) {
 343         case DRM_MODE_CONNECTOR_TV:
 344         case DRM_MODE_CONNECTOR_VGA:
 345                 break;
 346         default:
 347                 if (disp->dithering_mode) {
 348                         drm_object_attach_property(&connector->base,
 349                                                    disp->dithering_mode,
 350                                                    armc->dither.mode);
 351                 }
 352                 if (disp->dithering_depth) {
 353                         drm_object_attach_property(&connector->base,
 354                                                    disp->dithering_depth,
 355                                                    armc->dither.depth);
 356                 }
 357                 break;
 358         }
 359 }
 360
 361 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 362 int nouveau_tv_disable = 0;
 363 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 364
 365 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 366 int nouveau_ignorelid = 0;
 367 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 368
 369 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 370 int nouveau_duallink = 1;
 371 module_param_named(duallink, nouveau_duallink, int, 0400);
 372
 373 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 374 int nouveau_hdmimhz = 0;
 375 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 376
 377 struct nouveau_encoder *
 378 find_encoder(struct drm_connector *connector, int type)
 379 {
 380         struct nouveau_encoder *nv_encoder;
 381         struct drm_encoder *enc;
 382
 383         drm_connector_for_each_possible_encoder(connector, enc) {
 384                 nv_encoder = nouveau_encoder(enc);
 385
 386                 if (type == DCB_OUTPUT_ANY ||
 387                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
 388                         return nv_encoder;
 389         }
 390
 391         return NULL;
 392 }
 393
 394 static void
 395 nouveau_connector_destroy(struct drm_connector *connector)
 396 {
 397         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 398         nvif_event_dtor(&nv_connector->irq);
 399         nvif_event_dtor(&nv_connector->hpd);
 400         kfree(nv_connector->edid);
 401         drm_connector_unregister(connector);
 402         drm_connector_cleanup(connector);
 403         if (nv_connector->aux.transfer) {
 404                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 405                 kfree(nv_connector->aux.name);
 406         }
 407         nvif_conn_dtor(&nv_connector->conn);
 408         kfree(connector);
 409 }
 410
 411 static struct nouveau_encoder *
 412 nouveau_connector_ddc_detect(struct drm_connector *connector)
 413 {
 414         struct drm_device *dev = connector->dev;
 415         struct pci_dev *pdev = to_pci_dev(dev->dev);
 416         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 417         struct drm_encoder *encoder;
 418         int ret;
 419         bool switcheroo_ddc = false;
 420
 421         drm_connector_for_each_possible_encoder(connector, encoder) {
 422                 nv_encoder = nouveau_encoder(encoder);
 423
 424                 switch (nv_encoder->dcb->type) {
 425                 case DCB_OUTPUT_DP:
 426                         ret = nouveau_dp_detect(nouveau_connector(connector),
 427                                                 nv_encoder);
 428                         if (ret == NOUVEAU_DP_MST)
 429                                 return NULL;
 430                         else if (ret == NOUVEAU_DP_SST)
 431                                 found = nv_encoder;
 432
 433                         break;
 434                 case DCB_OUTPUT_LVDS:
 435                         switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 436                                             VGA_SWITCHEROO_CAN_SWITCH_DDC);
 437                         fallthrough;
 438                 default:
 439                         if (!nv_encoder->i2c)
 440                                 break;
 441
 442                         if (switcheroo_ddc)
 443                                 vga_switcheroo_lock_ddc(pdev);
 444                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 445                                 found = nv_encoder;
 446                         if (switcheroo_ddc)
 447                                 vga_switcheroo_unlock_ddc(pdev);
 448
 449                         break;
 450                 }
 451                 if (found)
 452                         break;
 453         }
 454
 455         return found;
 456 }
 457
 458 static struct nouveau_encoder *
 459 nouveau_connector_of_detect(struct drm_connector *connector)
 460 {
 461 #ifdef __powerpc__
 462         struct drm_device *dev = connector->dev;
 463         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 464         struct nouveau_encoder *nv_encoder;
 465         struct pci_dev *pdev = to_pci_dev(dev->dev);
 466         struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
 467
 468         if (!dn ||
 469             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 470               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 471                 return NULL;
 472
 473         for_each_child_of_node(dn, cn) {
 474                 const char *name = of_get_property(cn, "name", NULL);
 475                 const void *edid = of_get_property(cn, "EDID", NULL);
 476                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 477
 478                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 479                         nv_connector->edid =
 480                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 481                         of_node_put(cn);
 482                         return nv_encoder;
 483                 }
 484         }
 485 #endif
 486         return NULL;
 487 }
 488
 489 static void
 490 nouveau_connector_set_encoder(struct drm_connector *connector,
 491                               struct nouveau_encoder *nv_encoder)
 492 {
 493         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 494         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 495         struct drm_device *dev = connector->dev;
 496         struct pci_dev *pdev = to_pci_dev(dev->dev);
 497
 498         if (nv_connector->detected_encoder == nv_encoder)
 499                 return;
 500         nv_connector->detected_encoder = nv_encoder;
 501
 502         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 503                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 504                         connector->interlace_allowed =
 505                                 nv_encoder->caps.dp_interlace;
 506                 else
 507                         connector->interlace_allowed =
 508                                 drm->client.device.info.family < NV_DEVICE_INFO_V0_VOLTA;
 509                 connector->doublescan_allowed = true;
 510         } else
 511         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 512             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 513                 connector->doublescan_allowed = false;
 514                 connector->interlace_allowed = false;
 515         } else {
 516                 connector->doublescan_allowed = true;
 517                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 518                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 519                      (pdev->device & 0x0ff0) != 0x0100 &&
 520                      (pdev->device & 0x0ff0) != 0x0150))
 521                         /* HW is broken */
 522                         connector->interlace_allowed = false;
 523                 else
 524                         connector->interlace_allowed = true;
 525         }
 526
 527         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 528                 drm_object_property_set_value(&connector->base,
 529                         dev->mode_config.dvi_i_subconnector_property,
 530                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 531                         DRM_MODE_SUBCONNECTOR_DVID :
 532                         DRM_MODE_SUBCONNECTOR_DVIA);
 533         }
 534 }
 535
 536 static void
 537 nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
 538                            struct edid *edid)
 539 {
 540         if (nv_connector->edid != edid) {
 541                 struct edid *old_edid = nv_connector->edid;
 542
 543                 drm_connector_update_edid_property(&nv_connector->base, edid);
 544                 kfree(old_edid);
 545                 nv_connector->edid = edid;
 546         }
 547 }
 548
 549 static enum drm_connector_status
 550 nouveau_connector_detect(struct drm_connector *connector, bool force)
 551 {
 552         struct drm_device *dev = connector->dev;
 553         struct nouveau_drm *drm = nouveau_drm(dev);
 554         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 555         struct nouveau_encoder *nv_encoder = NULL;
 556         struct nouveau_encoder *nv_partner;
 557         struct i2c_adapter *i2c;
 558         int type;
 559         int ret;
 560         enum drm_connector_status conn_status = connector_status_disconnected;
 561
 562         /* Outputs are only polled while runtime active, so resuming the
 563          * device here is unnecessary (and would deadlock upon runtime suspend
 564          * because it waits for polling to finish). We do however, want to
 565          * prevent the autosuspend timer from elapsing during this operation
 566          * if possible.
 567          */
 568         if (drm_kms_helper_is_poll_worker()) {
 569                 pm_runtime_get_noresume(dev->dev);
 570         } else {
 571                 ret = pm_runtime_get_sync(dev->dev);
 572                 if (ret < 0 && ret != -EACCES) {
 573                         pm_runtime_put_autosuspend(dev->dev);
 574                         nouveau_connector_set_edid(nv_connector, NULL);
 575                         return conn_status;
 576                 }
 577         }
 578
 579         nv_encoder = nouveau_connector_ddc_detect(connector);
 580         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 581                 struct edid *new_edid;
 582
 583                 if ((vga_switcheroo_handler_flags() &
 584                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 585                     nv_connector->type == DCB_CONNECTOR_LVDS)
 586                         new_edid = drm_get_edid_switcheroo(connector, i2c);
 587                 else
 588                         new_edid = drm_get_edid(connector, i2c);
 589
 590                 nouveau_connector_set_edid(nv_connector, new_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
 623                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 624                         drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 625
 626                 goto out;
 627         } else {
 628                 nouveau_connector_set_edid(nv_connector, NULL);
 629         }
 630
 631         nv_encoder = nouveau_connector_of_detect(connector);
 632         if (nv_encoder) {
 633                 nouveau_connector_set_encoder(connector, nv_encoder);
 634                 conn_status = connector_status_connected;
 635                 goto out;
 636         }
 637
 638 detect_analog:
 639         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 640         if (!nv_encoder && !nouveau_tv_disable)
 641                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 642         if (nv_encoder && force) {
 643                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 644                 const struct drm_encoder_helper_funcs *helper =
 645                                                 encoder->helper_private;
 646
 647                 if (helper->detect(encoder, connector) ==
 648                                                 connector_status_connected) {
 649                         nouveau_connector_set_encoder(connector, nv_encoder);
 650                         conn_status = connector_status_connected;
 651                         goto out;
 652                 }
 653         }
 654
 655  out:
 656         if (!nv_connector->edid)
 657                 drm_dp_cec_unset_edid(&nv_connector->aux);
 658
 659         pm_runtime_mark_last_busy(dev->dev);
 660         pm_runtime_put_autosuspend(dev->dev);
 661
 662         return conn_status;
 663 }
 664
 665 static enum drm_connector_status
 666 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 667 {
 668         struct drm_device *dev = connector->dev;
 669         struct nouveau_drm *drm = nouveau_drm(dev);
 670         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 671         struct nouveau_encoder *nv_encoder = NULL;
 672         struct edid *edid = NULL;
 673         enum drm_connector_status status = connector_status_disconnected;
 674
 675         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 676         if (!nv_encoder)
 677                 goto out;
 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                         edid = nv_connector->edid;
 684                         goto out;
 685                 }
 686         }
 687
 688         /* On some laptops (Sony, i'm looking at you) there appears to
 689          * be no direct way of accessing the panel's EDID.  The only
 690          * option available to us appears to be to ask ACPI for help..
 691          *
 692          * It's important this check's before trying straps, one of the
 693          * said manufacturer's laptops are configured in such a way
 694          * the nouveau decides an entry in the VBIOS FP mode table is
 695          * valid - it's not (rh#613284)
 696          */
 697         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 698                 edid = nouveau_acpi_edid(dev, connector);
 699                 if (edid) {
 700                         status = connector_status_connected;
 701                         goto out;
 702                 }
 703         }
 704
 705         /* If no EDID found above, and the VBIOS indicates a hardcoded
 706          * modeline is avalilable for the panel, set it as the panel's
 707          * native mode and exit.
 708          */
 709         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 710             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 711                 status = connector_status_connected;
 712                 goto out;
 713         }
 714
 715         /* Still nothing, some VBIOS images have a hardcoded EDID block
 716          * stored for the panel stored in them.
 717          */
 718         if (!drm->vbios.fp_no_ddc) {
 719                 edid = (struct edid *)nouveau_bios_embedded_edid(dev);
 720                 if (edid) {
 721                         edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 722                         if (edid)
 723                                 status = connector_status_connected;
 724                 }
 725         }
 726
 727 out:
 728 #if defined(CONFIG_ACPI_BUTTON) || \
 729         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 730         if (status == connector_status_connected &&
 731             !nouveau_ignorelid && !acpi_lid_open())
 732                 status = connector_status_unknown;
 733 #endif
 734
 735         nouveau_connector_set_edid(nv_connector, edid);
 736         if (nv_encoder)
 737                 nouveau_connector_set_encoder(connector, nv_encoder);
 738         return status;
 739 }
 740
 741 static void
 742 nouveau_connector_force(struct drm_connector *connector)
 743 {
 744         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 745         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 746         struct nouveau_encoder *nv_encoder;
 747         int type;
 748
 749         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 750                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 751                         type = DCB_OUTPUT_TMDS;
 752                 else
 753                         type = DCB_OUTPUT_ANALOG;
 754         } else
 755                 type = DCB_OUTPUT_ANY;
 756
 757         nv_encoder = find_encoder(connector, type);
 758         if (!nv_encoder) {
 759                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 760                          connector->name);
 761                 connector->status = connector_status_disconnected;
 762                 return;
 763         }
 764
 765         nouveau_connector_set_encoder(connector, nv_encoder);
 766 }
 767
 768 static int
 769 nouveau_connector_set_property(struct drm_connector *connector,
 770                                struct drm_property *property, uint64_t value)
 771 {
 772         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 773         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 774         struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
 775         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 776         int ret;
 777
 778         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 779                                                     &asyc->state,
 780                                                     property, value);
 781         if (ret) {
 782                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 783                         return get_slave_funcs(encoder)->set_property(
 784                                 encoder, connector, property, value);
 785                 return ret;
 786         }
 787
 788         nv_connector->scaling_mode = asyc->scaler.mode;
 789         nv_connector->dithering_mode = asyc->dither.mode;
 790
 791         if (connector->encoder && connector->encoder->crtc) {
 792                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 793                                               &connector->encoder->crtc->mode,
 794                                                connector->encoder->crtc->x,
 795                                                connector->encoder->crtc->y,
 796                                                NULL);
 797                 if (!ret)
 798                         return -EINVAL;
 799         }
 800
 801         return 0;
 802 }
 803
 804 struct moderec {
 805         int hdisplay;
 806         int vdisplay;
 807 };
 808
 809 static struct moderec scaler_modes[] = {
 810         { 1920, 1200 },
 811         { 1920, 1080 },
 812         { 1680, 1050 },
 813         { 1600, 1200 },
 814         { 1400, 1050 },
 815         { 1280, 1024 },
 816         { 1280, 960 },
 817         { 1152, 864 },
 818         { 1024, 768 },
 819         { 800, 600 },
 820         { 720, 400 },
 821         { 640, 480 },
 822         { 640, 400 },
 823         { 640, 350 },
 824         {}
 825 };
 826
 827 static int
 828 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 829 {
 830         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 831         struct drm_display_mode *native = nv_connector->native_mode, *m;
 832         struct drm_device *dev = connector->dev;
 833         struct moderec *mode = &scaler_modes[0];
 834         int modes = 0;
 835
 836         if (!native)
 837                 return 0;
 838
 839         while (mode->hdisplay) {
 840                 if (mode->hdisplay <= native->hdisplay &&
 841                     mode->vdisplay <= native->vdisplay &&
 842                     (mode->hdisplay != native->hdisplay ||
 843                      mode->vdisplay != native->vdisplay)) {
 844                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 845                                          drm_mode_vrefresh(native), false,
 846                                          false, false);
 847                         if (!m)
 848                                 continue;
 849
 850                         drm_mode_probed_add(connector, m);
 851                         modes++;
 852                 }
 853
 854                 mode++;
 855         }
 856
 857         return modes;
 858 }
 859
 860 static void
 861 nouveau_connector_detect_depth(struct drm_connector *connector)
 862 {
 863         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 864         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 865         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 866         struct nvbios *bios = &drm->vbios;
 867         struct drm_display_mode *mode = nv_connector->native_mode;
 868         bool duallink;
 869
 870         /* if the edid is feeling nice enough to provide this info, use it */
 871         if (nv_connector->edid && connector->display_info.bpc)
 872                 return;
 873
 874         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 875         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 876                 connector->display_info.bpc = 6;
 877                 return;
 878         }
 879
 880         /* we're out of options unless we're LVDS, default to 8bpc */
 881         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 882                 connector->display_info.bpc = 8;
 883                 return;
 884         }
 885
 886         connector->display_info.bpc = 6;
 887
 888         /* LVDS: panel straps */
 889         if (bios->fp_no_ddc) {
 890                 if (bios->fp.if_is_24bit)
 891                         connector->display_info.bpc = 8;
 892                 return;
 893         }
 894
 895         /* LVDS: DDC panel, need to first determine the number of links to
 896          * know which if_is_24bit flag to check...
 897          */
 898         if (nv_connector->edid &&
 899             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 900                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 901         else
 902                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 903
 904         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 905             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 906                 connector->display_info.bpc = 8;
 907 }
 908
 909 static int
 910 nouveau_connector_late_register(struct drm_connector *connector)
 911 {
 912         int ret;
 913
 914         ret = nouveau_backlight_init(connector);
 915         if (ret)
 916                 return ret;
 917
 918         if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 919             connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
 920                 ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
 921                 if (ret)
 922                         goto backlight_fini;
 923         }
 924
 925         return 0;
 926 backlight_fini:
 927         nouveau_backlight_fini(connector);
 928         return ret;
 929 }
 930
 931 static void
 932 nouveau_connector_early_unregister(struct drm_connector *connector)
 933 {
 934         if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 935             connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
 936                 drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
 937
 938         nouveau_backlight_fini(connector);
 939 }
 940
 941 static int
 942 nouveau_connector_get_modes(struct drm_connector *connector)
 943 {
 944         struct drm_device *dev = connector->dev;
 945         struct nouveau_drm *drm = nouveau_drm(dev);
 946         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 947         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 948         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 949         int ret = 0;
 950
 951         /* destroy the native mode, the attached monitor could have changed.
 952          */
 953         if (nv_connector->native_mode) {
 954                 drm_mode_destroy(dev, nv_connector->native_mode);
 955                 nv_connector->native_mode = NULL;
 956         }
 957
 958         if (nv_connector->edid)
 959                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 960         else
 961         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 962             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 963              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 964                 struct drm_display_mode mode;
 965
 966                 nouveau_bios_fp_mode(dev, &mode);
 967                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 968         }
 969
 970         /* Determine display colour depth for everything except LVDS now,
 971          * DP requires this before mode_valid() is called.
 972          */
 973         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS && nv_connector->native_mode)
 974                 nouveau_connector_detect_depth(connector);
 975
 976         /* Find the native mode if this is a digital panel, if we didn't
 977          * find any modes through DDC previously add the native mode to
 978          * the list of modes.
 979          */
 980         if (!nv_connector->native_mode)
 981                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 982         if (ret == 0 && nv_connector->native_mode) {
 983                 struct drm_display_mode *mode;
 984
 985                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 986                 drm_mode_probed_add(connector, mode);
 987                 ret = 1;
 988         }
 989
 990         /* Determine LVDS colour depth, must happen after determining
 991          * "native" mode as some VBIOS tables require us to use the
 992          * pixel clock as part of the lookup...
 993          */
 994         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS && nv_connector->native_mode)
 995                 nouveau_connector_detect_depth(connector);
 996
 997         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 998                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 999
1000         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
1001             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
1002             nv_connector->type == DCB_CONNECTOR_eDP)
1003                 ret += nouveau_connector_scaler_modes_add(connector);
1004
1005         return ret;
1006 }
1007
1008 static unsigned
1009 get_tmds_link_bandwidth(struct drm_connector *connector)
1010 {
1011         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1012         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1013         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1014         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1015         struct drm_display_info *info = NULL;
1016         unsigned duallink_scale =
1017                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1018
1019         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1020                 info = &nv_connector->base.display_info;
1021                 duallink_scale = 1;
1022         }
1023
1024         if (info) {
1025                 if (nouveau_hdmimhz > 0)
1026                         return nouveau_hdmimhz * 1000;
1027                 /* Note: these limits are conservative, some Fermi's
1028                  * can do 297 MHz. Unclear how this can be determined.
1029                  */
1030                 if (drm->client.device.info.chipset >= 0x120) {
1031                         const int max_tmds_clock =
1032                                 info->hdmi.scdc.scrambling.supported ?
1033                                 594000 : 340000;
1034                         return info->max_tmds_clock ?
1035                                 min(info->max_tmds_clock, max_tmds_clock) :
1036                                 max_tmds_clock;
1037                 }
1038                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1039                         return 297000;
1040                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1041                         return 225000;
1042         }
1043
1044         if (dcb->location != DCB_LOC_ON_CHIP ||
1045             drm->client.device.info.chipset >= 0x46)
1046                 return 165000 * duallink_scale;
1047         else if (drm->client.device.info.chipset >= 0x40)
1048                 return 155000 * duallink_scale;
1049         else if (drm->client.device.info.chipset >= 0x18)
1050                 return 135000 * duallink_scale;
1051         else
1052                 return 112000 * duallink_scale;
1053 }
1054
1055 static enum drm_mode_status
1056 nouveau_connector_mode_valid(struct drm_connector *connector,
1057                              struct drm_display_mode *mode)
1058 {
1059         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1060         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1061         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1062         unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1063
1064         switch (nv_encoder->dcb->type) {
1065         case DCB_OUTPUT_LVDS:
1066                 if (nv_connector->native_mode &&
1067                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1068                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1069                         return MODE_PANEL;
1070
1071                 min_clock = 0;
1072                 max_clock = 400000;
1073                 break;
1074         case DCB_OUTPUT_TMDS:
1075                 max_clock = get_tmds_link_bandwidth(connector);
1076                 break;
1077         case DCB_OUTPUT_ANALOG:
1078                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1079                 if (!max_clock)
1080                         max_clock = 350000;
1081                 break;
1082         case DCB_OUTPUT_TV:
1083                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1084         case DCB_OUTPUT_DP:
1085                 return nv50_dp_mode_valid(nv_encoder, mode, NULL);
1086         default:
1087                 BUG();
1088                 return MODE_BAD;
1089         }
1090
1091         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1092                 clock *= 2;
1093
1094         if (clock < min_clock)
1095                 return MODE_CLOCK_LOW;
1096         if (clock > max_clock)
1097                 return MODE_CLOCK_HIGH;
1098
1099         return MODE_OK;
1100 }
1101
1102 static struct drm_encoder *
1103 nouveau_connector_best_encoder(struct drm_connector *connector)
1104 {
1105         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1106
1107         if (nv_connector->detected_encoder)
1108                 return to_drm_encoder(nv_connector->detected_encoder);
1109
1110         return NULL;
1111 }
1112
1113 static int
1114 nouveau_connector_atomic_check(struct drm_connector *connector, struct drm_atomic_state *state)
1115 {
1116         struct nouveau_connector *nv_conn = nouveau_connector(connector);
1117         struct drm_connector_state *conn_state =
1118                 drm_atomic_get_new_connector_state(state, connector);
1119
1120         if (!nv_conn->dp_encoder || !nv50_has_mst(nouveau_drm(connector->dev)))
1121                 return 0;
1122
1123         return drm_dp_mst_root_conn_atomic_check(conn_state, &nv_conn->dp_encoder->dp.mstm->mgr);
1124 }
1125
1126 static const struct drm_connector_helper_funcs
1127 nouveau_connector_helper_funcs = {
1128         .get_modes = nouveau_connector_get_modes,
1129         .mode_valid = nouveau_connector_mode_valid,
1130         .best_encoder = nouveau_connector_best_encoder,
1131         .atomic_check = nouveau_connector_atomic_check,
1132 };
1133
1134 static const struct drm_connector_funcs
1135 nouveau_connector_funcs = {
1136         .dpms = drm_helper_connector_dpms,
1137         .reset = nouveau_conn_reset,
1138         .detect = nouveau_connector_detect,
1139         .force = nouveau_connector_force,
1140         .fill_modes = drm_helper_probe_single_connector_modes,
1141         .set_property = nouveau_connector_set_property,
1142         .destroy = nouveau_connector_destroy,
1143         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1144         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1145         .atomic_set_property = nouveau_conn_atomic_set_property,
1146         .atomic_get_property = nouveau_conn_atomic_get_property,
1147         .late_register = nouveau_connector_late_register,
1148         .early_unregister = nouveau_connector_early_unregister,
1149 };
1150
1151 static const struct drm_connector_funcs
1152 nouveau_connector_funcs_lvds = {
1153         .dpms = drm_helper_connector_dpms,
1154         .reset = nouveau_conn_reset,
1155         .detect = nouveau_connector_detect_lvds,
1156         .force = nouveau_connector_force,
1157         .fill_modes = drm_helper_probe_single_connector_modes,
1158         .set_property = nouveau_connector_set_property,
1159         .destroy = nouveau_connector_destroy,
1160         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1161         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1162         .atomic_set_property = nouveau_conn_atomic_set_property,
1163         .atomic_get_property = nouveau_conn_atomic_get_property,
1164         .late_register = nouveau_connector_late_register,
1165         .early_unregister = nouveau_connector_early_unregister,
1166 };
1167
1168 void
1169 nouveau_connector_hpd(struct nouveau_connector *nv_connector, u64 bits)
1170 {
1171         struct nouveau_drm *drm = nouveau_drm(nv_connector->base.dev);
1172         u32 mask = drm_connector_mask(&nv_connector->base);
1173         unsigned long flags;
1174
1175         spin_lock_irqsave(&drm->hpd_lock, flags);
1176         if (!(drm->hpd_pending & mask)) {
1177                 nv_connector->hpd_pending |= bits;
1178                 drm->hpd_pending |= mask;
1179                 schedule_work(&drm->hpd_work);
1180         }
1181         spin_unlock_irqrestore(&drm->hpd_lock, flags);
1182 }
1183
1184 static int
1185 nouveau_connector_irq(struct nvif_event *event, void *repv, u32 repc)
1186 {
1187         struct nouveau_connector *nv_connector = container_of(event, typeof(*nv_connector), irq);
1188
1189         schedule_work(&nv_connector->irq_work);
1190         return NVIF_EVENT_KEEP;
1191 }
1192
1193 static int
1194 nouveau_connector_hotplug(struct nvif_event *event, void *repv, u32 repc)
1195 {
1196         struct nouveau_connector *nv_connector = container_of(event, typeof(*nv_connector), hpd);
1197         struct nvif_conn_event_v0 *rep = repv;
1198
1199         nouveau_connector_hpd(nv_connector, rep->types);
1200         return NVIF_EVENT_KEEP;
1201 }
1202
1203 static ssize_t
1204 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1205 {
1206         struct nouveau_connector *nv_connector =
1207                 container_of(obj, typeof(*nv_connector), aux);
1208         struct nouveau_encoder *nv_encoder;
1209         struct nvkm_i2c_aux *aux;
1210         u8 size = msg->size;
1211         int ret;
1212
1213         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1214         if (!nv_encoder || !(aux = nv_encoder->aux))
1215                 return -ENODEV;
1216         if (WARN_ON(msg->size > 16))
1217                 return -E2BIG;
1218
1219         ret = nvkm_i2c_aux_acquire(aux);
1220         if (ret)
1221                 return ret;
1222
1223         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1224                                 msg->buffer, &size);
1225         nvkm_i2c_aux_release(aux);
1226         if (ret >= 0) {
1227                 msg->reply = ret;
1228                 return size;
1229         }
1230
1231         return ret;
1232 }
1233
1234 static int
1235 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1236 {
1237         switch (dcb) {
1238         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1239         case DCB_CONNECTOR_TV_0     :
1240         case DCB_CONNECTOR_TV_1     :
1241         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1242         case DCB_CONNECTOR_DMS59_0  :
1243         case DCB_CONNECTOR_DMS59_1  :
1244         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1245         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1246         case DCB_CONNECTOR_LVDS     :
1247         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1248         case DCB_CONNECTOR_DMS59_DP0:
1249         case DCB_CONNECTOR_DMS59_DP1:
1250         case DCB_CONNECTOR_DP       :
1251         case DCB_CONNECTOR_mDP      :
1252         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1253         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1254         case DCB_CONNECTOR_HDMI_0   :
1255         case DCB_CONNECTOR_HDMI_1   :
1256         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1257         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1258         default:
1259                 break;
1260         }
1261
1262         return DRM_MODE_CONNECTOR_Unknown;
1263 }
1264
1265 struct drm_connector *
1266 nouveau_connector_create(struct drm_device *dev,
1267                          const struct dcb_output *dcbe)
1268 {
1269         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1270         struct nouveau_drm *drm = nouveau_drm(dev);
1271         struct nouveau_display *disp = nouveau_display(dev);
1272         struct nouveau_connector *nv_connector = NULL;
1273         struct drm_connector *connector;
1274         struct drm_connector_list_iter conn_iter;
1275         char aux_name[48] = {0};
1276         int index = dcbe->connector;
1277         int type, ret = 0;
1278         bool dummy;
1279
1280         drm_connector_list_iter_begin(dev, &conn_iter);
1281         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1282                 nv_connector = nouveau_connector(connector);
1283                 if (nv_connector->index == index) {
1284                         drm_connector_list_iter_end(&conn_iter);
1285                         return connector;
1286                 }
1287         }
1288         drm_connector_list_iter_end(&conn_iter);
1289
1290         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1291         if (!nv_connector)
1292                 return ERR_PTR(-ENOMEM);
1293
1294         connector = &nv_connector->base;
1295         nv_connector->index = index;
1296         INIT_WORK(&nv_connector->irq_work, nouveau_dp_irq);
1297
1298         /* attempt to parse vbios connector type and hotplug gpio */
1299         nv_connector->dcb = olddcb_conn(dev, index);
1300         if (nv_connector->dcb) {
1301                 u32 entry = ROM16(nv_connector->dcb[0]);
1302                 if (olddcb_conntab(dev)[3] >= 4)
1303                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1304
1305                 nv_connector->type = nv_connector->dcb[0];
1306                 if (drm_conntype_from_dcb(nv_connector->type) ==
1307                                           DRM_MODE_CONNECTOR_Unknown) {
1308                         NV_WARN(drm, "unknown connector type %02x\n",
1309                                 nv_connector->type);
1310                         nv_connector->type = DCB_CONNECTOR_NONE;
1311                 }
1312
1313                 /* Gigabyte NX85T */
1314                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1315                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1316                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1317                 }
1318
1319                 /* Gigabyte GV-NX86T512H */
1320                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1321                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1322                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1323                 }
1324         } else {
1325                 nv_connector->type = DCB_CONNECTOR_NONE;
1326         }
1327
1328         /* no vbios data, or an unknown dcb connector type - attempt to
1329          * figure out something suitable ourselves
1330          */
1331         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1332                 struct nouveau_drm *drm = nouveau_drm(dev);
1333                 struct dcb_table *dcbt = &drm->vbios.dcb;
1334                 u32 encoders = 0;
1335                 int i;
1336
1337                 for (i = 0; i < dcbt->entries; i++) {
1338                         if (dcbt->entry[i].connector == nv_connector->index)
1339                                 encoders |= (1 << dcbt->entry[i].type);
1340                 }
1341
1342                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1343                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1344                                 nv_connector->type = DCB_CONNECTOR_DP;
1345                         else
1346                                 nv_connector->type = DCB_CONNECTOR_eDP;
1347                 } else
1348                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1349                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1350                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1351                         else
1352                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1353                 } else
1354                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1355                         nv_connector->type = DCB_CONNECTOR_VGA;
1356                 } else
1357                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1358                         nv_connector->type = DCB_CONNECTOR_LVDS;
1359                 } else
1360                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1361                         nv_connector->type = DCB_CONNECTOR_TV_0;
1362                 }
1363         }
1364
1365         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1366         case DRM_MODE_CONNECTOR_LVDS:
1367                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1368                 if (ret) {
1369                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1370                         kfree(nv_connector);
1371                         return ERR_PTR(ret);
1372                 }
1373
1374                 funcs = &nouveau_connector_funcs_lvds;
1375                 break;
1376         case DRM_MODE_CONNECTOR_DisplayPort:
1377         case DRM_MODE_CONNECTOR_eDP:
1378                 nv_connector->aux.dev = connector->kdev;
1379                 nv_connector->aux.drm_dev = dev;
1380                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1381                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1382                          dcbe->hasht, dcbe->hashm);
1383                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1384                 if (!nv_connector->aux.name) {
1385                         kfree(nv_connector);
1386                         return ERR_PTR(-ENOMEM);
1387                 }
1388                 drm_dp_aux_init(&nv_connector->aux);
1389                 break;
1390         default:
1391                 funcs = &nouveau_connector_funcs;
1392                 break;
1393         }
1394
1395         /* HDMI 3D support */
1396         if ((disp->disp.object.oclass >= G82_DISP)
1397             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1398                 || (type == DRM_MODE_CONNECTOR_eDP)
1399                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1400                 connector->stereo_allowed = true;
1401
1402         /* defaults, will get overridden in detect() */
1403         connector->interlace_allowed = false;
1404         connector->doublescan_allowed = false;
1405
1406         drm_connector_init(dev, connector, funcs, type);
1407         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1408         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1409
1410         if (nv_connector->dcb && (disp->disp.conn_mask & BIT(nv_connector->index))) {
1411                 ret = nvif_conn_ctor(&disp->disp, nv_connector->base.name, nv_connector->index,
1412                                      &nv_connector->conn);
1413                 if (ret) {
1414                         kfree(nv_connector);
1415                         return ERR_PTR(ret);
1416                 }
1417
1418                 ret = nvif_conn_event_ctor(&nv_connector->conn, "kmsHotplug",
1419                                            nouveau_connector_hotplug,
1420                                            NVIF_CONN_EVENT_V0_PLUG | NVIF_CONN_EVENT_V0_UNPLUG,
1421                                            &nv_connector->hpd);
1422                 if (ret == 0)
1423                         connector->polled = DRM_CONNECTOR_POLL_HPD;
1424
1425                 if (nv_connector->aux.transfer) {
1426                         ret = nvif_conn_event_ctor(&nv_connector->conn, "kmsDpIrq",
1427                                                    nouveau_connector_irq, NVIF_CONN_EVENT_V0_IRQ,
1428                                                    &nv_connector->irq);
1429                         if (ret) {
1430                                 nvif_event_dtor(&nv_connector->hpd);
1431                                 nvif_conn_dtor(&nv_connector->conn);
1432                                 kfree(nv_connector);
1433                                 return ERR_PTR(ret);
1434                         }
1435                 }
1436         }
1437
1438         connector->funcs->reset(connector);
1439         nouveau_conn_attach_properties(connector);
1440
1441         /* Default scaling mode */
1442         switch (nv_connector->type) {
1443         case DCB_CONNECTOR_LVDS:
1444         case DCB_CONNECTOR_LVDS_SPWG:
1445         case DCB_CONNECTOR_eDP:
1446                 /* see note in nouveau_connector_set_property() */
1447                 if (disp->disp.object.oclass < NV50_DISP) {
1448                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1449                         break;
1450                 }
1451                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1452                 break;
1453         default:
1454                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1455                 break;
1456         }
1457
1458         /* dithering properties */
1459         switch (nv_connector->type) {
1460         case DCB_CONNECTOR_TV_0:
1461         case DCB_CONNECTOR_TV_1:
1462         case DCB_CONNECTOR_TV_3:
1463         case DCB_CONNECTOR_VGA:
1464                 break;
1465         default:
1466                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1467                 break;
1468         }
1469
1470         switch (type) {
1471         case DRM_MODE_CONNECTOR_DisplayPort:
1472                 nv_connector->dp_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1473                 fallthrough;
1474         case DRM_MODE_CONNECTOR_eDP:
1475                 drm_dp_cec_register_connector(&nv_connector->aux, connector);
1476                 break;
1477         }
1478
1479         drm_connector_register(connector);
1480         return connector;
1481 }