drivers/gpu/drm/nouveau/nouveau_connector.c

   1 /*
   2  * Copyright (C) 2008 Maarten Maathuis.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include <acpi/button.h>
  28
  29 #include <linux/pm_runtime.h>
  30 #include <linux/vga_switcheroo.h>
  31
  32 #include <drm/drm_atomic_helper.h>
  33 #include <drm/drm_edid.h>
  34 #include <drm/drm_crtc_helper.h>
  35 #include <drm/drm_probe_helper.h>
  36 #include <drm/drm_atomic.h>
  37
  38 #include "nouveau_reg.h"
  39 #include "nouveau_drv.h"
  40 #include "dispnv04/hw.h"
  41 #include "dispnv50/disp.h"
  42 #include "nouveau_acpi.h"
  43
  44 #include "nouveau_display.h"
  45 #include "nouveau_connector.h"
  46 #include "nouveau_encoder.h"
  47 #include "nouveau_crtc.h"
  48
  49 #include <nvif/class.h>
  50 #include <nvif/cl0046.h>
  51 #include <nvif/event.h>
  52
  53 struct drm_display_mode *
  54 nouveau_conn_native_mode(struct drm_connector *connector)
  55 {
  56         const struct drm_connector_helper_funcs *helper = connector->helper_private;
  57         struct nouveau_drm *drm = nouveau_drm(connector->dev);
  58         struct drm_device *dev = connector->dev;
  59         struct drm_display_mode *mode, *largest = NULL;
  60         int high_w = 0, high_h = 0, high_v = 0;
  61
  62         list_for_each_entry(mode, &connector->probed_modes, head) {
  63                 if (helper->mode_valid(connector, mode) != MODE_OK ||
  64                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
  65                         continue;
  66
  67                 /* Use preferred mode if there is one.. */
  68                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
  69                         NV_DEBUG(drm, "native mode from preferred\n");
  70                         return drm_mode_duplicate(dev, mode);
  71                 }
  72
  73                 /* Otherwise, take the resolution with the largest width, then
  74                  * height, then vertical refresh
  75                  */
  76                 if (mode->hdisplay < high_w)
  77                         continue;
  78
  79                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
  80                         continue;
  81
  82                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
  83                     drm_mode_vrefresh(mode) < high_v)
  84                         continue;
  85
  86                 high_w = mode->hdisplay;
  87                 high_h = mode->vdisplay;
  88                 high_v = drm_mode_vrefresh(mode);
  89                 largest = mode;
  90         }
  91
  92         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
  93                       high_w, high_h, high_v);
  94         return largest ? drm_mode_duplicate(dev, largest) : NULL;
  95 }
  96
  97 int
  98 nouveau_conn_atomic_get_property(struct drm_connector *connector,
  99                                  const struct drm_connector_state *state,
 100                                  struct drm_property *property, u64 *val)
 101 {
 102         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 103         struct nouveau_display *disp = nouveau_display(connector->dev);
 104         struct drm_device *dev = connector->dev;
 105
 106         if (property == dev->mode_config.scaling_mode_property)
 107                 *val = asyc->scaler.mode;
 108         else if (property == disp->underscan_property)
 109                 *val = asyc->scaler.underscan.mode;
 110         else if (property == disp->underscan_hborder_property)
 111                 *val = asyc->scaler.underscan.hborder;
 112         else if (property == disp->underscan_vborder_property)
 113                 *val = asyc->scaler.underscan.vborder;
 114         else if (property == disp->dithering_mode)
 115                 *val = asyc->dither.mode;
 116         else if (property == disp->dithering_depth)
 117                 *val = asyc->dither.depth;
 118         else if (property == disp->vibrant_hue_property)
 119                 *val = asyc->procamp.vibrant_hue;
 120         else if (property == disp->color_vibrance_property)
 121                 *val = asyc->procamp.color_vibrance;
 122         else
 123                 return -EINVAL;
 124
 125         return 0;
 126 }
 127
 128 int
 129 nouveau_conn_atomic_set_property(struct drm_connector *connector,
 130                                  struct drm_connector_state *state,
 131                                  struct drm_property *property, u64 val)
 132 {
 133         struct drm_device *dev = connector->dev;
 134         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 135         struct nouveau_display *disp = nouveau_display(dev);
 136
 137         if (property == dev->mode_config.scaling_mode_property) {
 138                 switch (val) {
 139                 case DRM_MODE_SCALE_NONE:
 140                         /* We allow 'None' for EDID modes, even on a fixed
 141                          * panel (some exist with support for lower refresh
 142                          * rates, which people might want to use for power-
 143                          * saving purposes).
 144                          *
 145                          * Non-EDID modes will force the use of GPU scaling
 146                          * to the native mode regardless of this setting.
 147                          */
 148                         switch (connector->connector_type) {
 149                         case DRM_MODE_CONNECTOR_LVDS:
 150                         case DRM_MODE_CONNECTOR_eDP:
 151                                 /* ... except prior to G80, where the code
 152                                  * doesn't support such things.
 153                                  */
 154                                 if (disp->disp.object.oclass < NV50_DISP)
 155                                         return -EINVAL;
 156                                 break;
 157                         default:
 158                                 break;
 159                         }
 160                 case DRM_MODE_SCALE_FULLSCREEN:
 161                 case DRM_MODE_SCALE_CENTER:
 162                 case DRM_MODE_SCALE_ASPECT:
 163                         break;
 164                 default:
 165                         return -EINVAL;
 166                 }
 167
 168                 if (asyc->scaler.mode != val) {
 169                         asyc->scaler.mode = val;
 170                         asyc->set.scaler = true;
 171                 }
 172         } else
 173         if (property == disp->underscan_property) {
 174                 if (asyc->scaler.underscan.mode != val) {
 175                         asyc->scaler.underscan.mode = val;
 176                         asyc->set.scaler = true;
 177                 }
 178         } else
 179         if (property == disp->underscan_hborder_property) {
 180                 if (asyc->scaler.underscan.hborder != val) {
 181                         asyc->scaler.underscan.hborder = val;
 182                         asyc->set.scaler = true;
 183                 }
 184         } else
 185         if (property == disp->underscan_vborder_property) {
 186                 if (asyc->scaler.underscan.vborder != val) {
 187                         asyc->scaler.underscan.vborder = val;
 188                         asyc->set.scaler = true;
 189                 }
 190         } else
 191         if (property == disp->dithering_mode) {
 192                 if (asyc->dither.mode != val) {
 193                         asyc->dither.mode = val;
 194                         asyc->set.dither = true;
 195                 }
 196         } else
 197         if (property == disp->dithering_depth) {
 198                 if (asyc->dither.mode != val) {
 199                         asyc->dither.depth = val;
 200                         asyc->set.dither = true;
 201                 }
 202         } else
 203         if (property == disp->vibrant_hue_property) {
 204                 if (asyc->procamp.vibrant_hue != val) {
 205                         asyc->procamp.vibrant_hue = val;
 206                         asyc->set.procamp = true;
 207                 }
 208         } else
 209         if (property == disp->color_vibrance_property) {
 210                 if (asyc->procamp.color_vibrance != val) {
 211                         asyc->procamp.color_vibrance = val;
 212                         asyc->set.procamp = true;
 213                 }
 214         } else {
 215                 return -EINVAL;
 216         }
 217
 218         return 0;
 219 }
 220
 221 void
 222 nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 223                                   struct drm_connector_state *state)
 224 {
 225         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 226         __drm_atomic_helper_connector_destroy_state(&asyc->state);
 227         kfree(asyc);
 228 }
 229
 230 struct drm_connector_state *
 231 nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 232 {
 233         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 234         struct nouveau_conn_atom *asyc;
 235         if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 236                 return NULL;
 237         __drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 238         asyc->dither = armc->dither;
 239         asyc->scaler = armc->scaler;
 240         asyc->procamp = armc->procamp;
 241         asyc->set.mask = 0;
 242         return &asyc->state;
 243 }
 244
 245 void
 246 nouveau_conn_reset(struct drm_connector *connector)
 247 {
 248         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 249         struct nouveau_conn_atom *asyc;
 250
 251         if (drm_drv_uses_atomic_modeset(connector->dev)) {
 252                 if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 253                         return;
 254
 255                 if (connector->state)
 256                         nouveau_conn_atomic_destroy_state(connector,
 257                                                           connector->state);
 258
 259                 __drm_atomic_helper_connector_reset(connector, &asyc->state);
 260         } else {
 261                 asyc = &nv_connector->properties_state;
 262         }
 263
 264         asyc->dither.mode = DITHERING_MODE_AUTO;
 265         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 266         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 267         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 268         asyc->procamp.color_vibrance = 150;
 269         asyc->procamp.vibrant_hue = 90;
 270
 271         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 272                 switch (connector->connector_type) {
 273                 case DRM_MODE_CONNECTOR_LVDS:
 274                         /* See note in nouveau_conn_atomic_set_property(). */
 275                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 276                         break;
 277                 default:
 278                         break;
 279                 }
 280         }
 281 }
 282
 283 void
 284 nouveau_conn_attach_properties(struct drm_connector *connector)
 285 {
 286         struct drm_device *dev = connector->dev;
 287         struct nouveau_display *disp = nouveau_display(dev);
 288         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 289         struct nouveau_conn_atom *armc;
 290
 291         if (drm_drv_uses_atomic_modeset(connector->dev))
 292                 armc = nouveau_conn_atom(connector->state);
 293         else
 294                 armc = &nv_connector->properties_state;
 295
 296         /* Init DVI-I specific properties. */
 297         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 298                 drm_object_attach_property(&connector->base, dev->mode_config.
 299                                            dvi_i_subconnector_property, 0);
 300
 301         /* Add overscan compensation options to digital outputs. */
 302         if (disp->underscan_property &&
 303             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 304              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 305              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 306              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 307                 drm_object_attach_property(&connector->base,
 308                                            disp->underscan_property,
 309                                            UNDERSCAN_OFF);
 310                 drm_object_attach_property(&connector->base,
 311                                            disp->underscan_hborder_property, 0);
 312                 drm_object_attach_property(&connector->base,
 313                                            disp->underscan_vborder_property, 0);
 314         }
 315
 316         /* Add hue and saturation options. */
 317         if (disp->vibrant_hue_property)
 318                 drm_object_attach_property(&connector->base,
 319                                            disp->vibrant_hue_property,
 320                                            armc->procamp.vibrant_hue);
 321         if (disp->color_vibrance_property)
 322                 drm_object_attach_property(&connector->base,
 323                                            disp->color_vibrance_property,
 324                                            armc->procamp.color_vibrance);
 325
 326         /* Scaling mode property. */
 327         switch (connector->connector_type) {
 328         case DRM_MODE_CONNECTOR_TV:
 329                 break;
 330         case DRM_MODE_CONNECTOR_VGA:
 331                 if (disp->disp.object.oclass < NV50_DISP)
 332                         break; /* Can only scale on DFPs. */
 333                 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_notify_dtor(&nv_connector->hpd);
 399         kfree(nv_connector->edid);
 400         drm_connector_unregister(connector);
 401         drm_connector_cleanup(connector);
 402         if (nv_connector->aux.transfer) {
 403                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 404                 drm_dp_aux_unregister(&nv_connector->aux);
 405                 kfree(nv_connector->aux.name);
 406         }
 407         kfree(connector);
 408 }
 409
 410 static struct nouveau_encoder *
 411 nouveau_connector_ddc_detect(struct drm_connector *connector)
 412 {
 413         struct drm_device *dev = connector->dev;
 414         struct pci_dev *pdev = to_pci_dev(dev->dev);
 415         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 416         struct drm_encoder *encoder;
 417         int ret;
 418         bool switcheroo_ddc = false;
 419
 420         drm_connector_for_each_possible_encoder(connector, encoder) {
 421                 nv_encoder = nouveau_encoder(encoder);
 422
 423                 switch (nv_encoder->dcb->type) {
 424                 case DCB_OUTPUT_DP:
 425                         ret = nouveau_dp_detect(nouveau_connector(connector),
 426                                                 nv_encoder);
 427                         if (ret == NOUVEAU_DP_MST)
 428                                 return NULL;
 429                         else if (ret == NOUVEAU_DP_SST)
 430                                 found = nv_encoder;
 431
 432                         break;
 433                 case DCB_OUTPUT_LVDS:
 434                         switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 435                                             VGA_SWITCHEROO_CAN_SWITCH_DDC);
 436                         fallthrough;
 437                 default:
 438                         if (!nv_encoder->i2c)
 439                                 break;
 440
 441                         if (switcheroo_ddc)
 442                                 vga_switcheroo_lock_ddc(pdev);
 443                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 444                                 found = nv_encoder;
 445                         if (switcheroo_ddc)
 446                                 vga_switcheroo_unlock_ddc(pdev);
 447
 448                         break;
 449                 }
 450                 if (found)
 451                         break;
 452         }
 453
 454         return found;
 455 }
 456
 457 static struct nouveau_encoder *
 458 nouveau_connector_of_detect(struct drm_connector *connector)
 459 {
 460 #ifdef __powerpc__
 461         struct drm_device *dev = connector->dev;
 462         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 463         struct nouveau_encoder *nv_encoder;
 464         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 465
 466         if (!dn ||
 467             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 468               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 469                 return NULL;
 470
 471         for_each_child_of_node(dn, cn) {
 472                 const char *name = of_get_property(cn, "name", NULL);
 473                 const void *edid = of_get_property(cn, "EDID", NULL);
 474                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 475
 476                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 477                         nv_connector->edid =
 478                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 479                         of_node_put(cn);
 480                         return nv_encoder;
 481                 }
 482         }
 483 #endif
 484         return NULL;
 485 }
 486
 487 static void
 488 nouveau_connector_set_encoder(struct drm_connector *connector,
 489                               struct nouveau_encoder *nv_encoder)
 490 {
 491         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 492         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 493         struct drm_device *dev = connector->dev;
 494         struct pci_dev *pdev = to_pci_dev(dev->dev);
 495
 496         if (nv_connector->detected_encoder == nv_encoder)
 497                 return;
 498         nv_connector->detected_encoder = nv_encoder;
 499
 500         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 501                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 502                         connector->interlace_allowed =
 503                                 nv_encoder->caps.dp_interlace;
 504                 else
 505                         connector->interlace_allowed = true;
 506                 connector->doublescan_allowed = true;
 507         } else
 508         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 509             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 510                 connector->doublescan_allowed = false;
 511                 connector->interlace_allowed = false;
 512         } else {
 513                 connector->doublescan_allowed = true;
 514                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 515                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 516                      (pdev->device & 0x0ff0) != 0x0100 &&
 517                      (pdev->device & 0x0ff0) != 0x0150))
 518                         /* HW is broken */
 519                         connector->interlace_allowed = false;
 520                 else
 521                         connector->interlace_allowed = true;
 522         }
 523
 524         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 525                 drm_object_property_set_value(&connector->base,
 526                         dev->mode_config.dvi_i_subconnector_property,
 527                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 528                         DRM_MODE_SUBCONNECTOR_DVID :
 529                         DRM_MODE_SUBCONNECTOR_DVIA);
 530         }
 531 }
 532
 533 static void
 534 nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
 535                            struct edid *edid)
 536 {
 537         if (nv_connector->edid != edid) {
 538                 struct edid *old_edid = nv_connector->edid;
 539
 540                 drm_connector_update_edid_property(&nv_connector->base, edid);
 541                 kfree(old_edid);
 542                 nv_connector->edid = edid;
 543         }
 544 }
 545
 546 static enum drm_connector_status
 547 nouveau_connector_detect(struct drm_connector *connector, bool force)
 548 {
 549         struct drm_device *dev = connector->dev;
 550         struct nouveau_drm *drm = nouveau_drm(dev);
 551         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 552         struct nouveau_encoder *nv_encoder = NULL;
 553         struct nouveau_encoder *nv_partner;
 554         struct i2c_adapter *i2c;
 555         int type;
 556         int ret;
 557         enum drm_connector_status conn_status = connector_status_disconnected;
 558
 559         /* Outputs are only polled while runtime active, so resuming the
 560          * device here is unnecessary (and would deadlock upon runtime suspend
 561          * because it waits for polling to finish). We do however, want to
 562          * prevent the autosuspend timer from elapsing during this operation
 563          * if possible.
 564          */
 565         if (drm_kms_helper_is_poll_worker()) {
 566                 pm_runtime_get_noresume(dev->dev);
 567         } else {
 568                 ret = pm_runtime_get_sync(dev->dev);
 569                 if (ret < 0 && ret != -EACCES) {
 570                         pm_runtime_put_autosuspend(dev->dev);
 571                         nouveau_connector_set_edid(nv_connector, NULL);
 572                         return conn_status;
 573                 }
 574         }
 575
 576         nv_encoder = nouveau_connector_ddc_detect(connector);
 577         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 578                 struct edid *new_edid;
 579
 580                 if ((vga_switcheroo_handler_flags() &
 581                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 582                     nv_connector->type == DCB_CONNECTOR_LVDS)
 583                         new_edid = drm_get_edid_switcheroo(connector, i2c);
 584                 else
 585                         new_edid = drm_get_edid(connector, i2c);
 586
 587                 nouveau_connector_set_edid(nv_connector, new_edid);
 588                 if (!nv_connector->edid) {
 589                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 590                                  connector->name);
 591                         goto detect_analog;
 592                 }
 593
 594                 /* Override encoder type for DVI-I based on whether EDID
 595                  * says the display is digital or analog, both use the
 596                  * same i2c channel so the value returned from ddc_detect
 597                  * isn't necessarily correct.
 598                  */
 599                 nv_partner = NULL;
 600                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 601                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 602                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 603                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 604
 605                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 606                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 607                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 608                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 609                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 610                                 type = DCB_OUTPUT_TMDS;
 611                         else
 612                                 type = DCB_OUTPUT_ANALOG;
 613
 614                         nv_encoder = find_encoder(connector, type);
 615                 }
 616
 617                 nouveau_connector_set_encoder(connector, nv_encoder);
 618                 conn_status = connector_status_connected;
 619                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 620                 goto out;
 621         } else {
 622                 nouveau_connector_set_edid(nv_connector, NULL);
 623         }
 624
 625         nv_encoder = nouveau_connector_of_detect(connector);
 626         if (nv_encoder) {
 627                 nouveau_connector_set_encoder(connector, nv_encoder);
 628                 conn_status = connector_status_connected;
 629                 goto out;
 630         }
 631
 632 detect_analog:
 633         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 634         if (!nv_encoder && !nouveau_tv_disable)
 635                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 636         if (nv_encoder && force) {
 637                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 638                 const struct drm_encoder_helper_funcs *helper =
 639                                                 encoder->helper_private;
 640
 641                 if (helper->detect(encoder, connector) ==
 642                                                 connector_status_connected) {
 643                         nouveau_connector_set_encoder(connector, nv_encoder);
 644                         conn_status = connector_status_connected;
 645                         goto out;
 646                 }
 647         }
 648
 649  out:
 650         if (!nv_connector->edid)
 651                 drm_dp_cec_unset_edid(&nv_connector->aux);
 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         struct edid *edid = NULL;
 667         enum drm_connector_status status = connector_status_disconnected;
 668
 669         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 670         if (!nv_encoder)
 671                 goto out;
 672
 673         /* Try retrieving EDID via DDC */
 674         if (!drm->vbios.fp_no_ddc) {
 675                 status = nouveau_connector_detect(connector, force);
 676                 if (status == connector_status_connected) {
 677                         edid = nv_connector->edid;
 678                         goto out;
 679                 }
 680         }
 681
 682         /* On some laptops (Sony, i'm looking at you) there appears to
 683          * be no direct way of accessing the panel's EDID.  The only
 684          * option available to us appears to be to ask ACPI for help..
 685          *
 686          * It's important this check's before trying straps, one of the
 687          * said manufacturer's laptops are configured in such a way
 688          * the nouveau decides an entry in the VBIOS FP mode table is
 689          * valid - it's not (rh#613284)
 690          */
 691         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 692                 edid = nouveau_acpi_edid(dev, connector);
 693                 if (edid) {
 694                         status = connector_status_connected;
 695                         goto out;
 696                 }
 697         }
 698
 699         /* If no EDID found above, and the VBIOS indicates a hardcoded
 700          * modeline is avalilable for the panel, set it as the panel's
 701          * native mode and exit.
 702          */
 703         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 704             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 705                 status = connector_status_connected;
 706                 goto out;
 707         }
 708
 709         /* Still nothing, some VBIOS images have a hardcoded EDID block
 710          * stored for the panel stored in them.
 711          */
 712         if (!drm->vbios.fp_no_ddc) {
 713                 edid = (struct edid *)nouveau_bios_embedded_edid(dev);
 714                 if (edid) {
 715                         edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 716                         if (edid)
 717                                 status = connector_status_connected;
 718                 }
 719         }
 720
 721 out:
 722 #if defined(CONFIG_ACPI_BUTTON) || \
 723         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 724         if (status == connector_status_connected &&
 725             !nouveau_ignorelid && !acpi_lid_open())
 726                 status = connector_status_unknown;
 727 #endif
 728
 729         nouveau_connector_set_edid(nv_connector, edid);
 730         nouveau_connector_set_encoder(connector, nv_encoder);
 731         return status;
 732 }
 733
 734 static void
 735 nouveau_connector_force(struct drm_connector *connector)
 736 {
 737         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 738         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 739         struct nouveau_encoder *nv_encoder;
 740         int type;
 741
 742         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 743                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 744                         type = DCB_OUTPUT_TMDS;
 745                 else
 746                         type = DCB_OUTPUT_ANALOG;
 747         } else
 748                 type = DCB_OUTPUT_ANY;
 749
 750         nv_encoder = find_encoder(connector, type);
 751         if (!nv_encoder) {
 752                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 753                          connector->name);
 754                 connector->status = connector_status_disconnected;
 755                 return;
 756         }
 757
 758         nouveau_connector_set_encoder(connector, nv_encoder);
 759 }
 760
 761 static int
 762 nouveau_connector_set_property(struct drm_connector *connector,
 763                                struct drm_property *property, uint64_t value)
 764 {
 765         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 766         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 767         struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
 768         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 769         int ret;
 770
 771         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 772                                                     &asyc->state,
 773                                                     property, value);
 774         if (ret) {
 775                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 776                         return get_slave_funcs(encoder)->set_property(
 777                                 encoder, connector, property, value);
 778                 return ret;
 779         }
 780
 781         nv_connector->scaling_mode = asyc->scaler.mode;
 782         nv_connector->dithering_mode = asyc->dither.mode;
 783
 784         if (connector->encoder && connector->encoder->crtc) {
 785                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 786                                               &connector->encoder->crtc->mode,
 787                                                connector->encoder->crtc->x,
 788                                                connector->encoder->crtc->y,
 789                                                NULL);
 790                 if (!ret)
 791                         return -EINVAL;
 792         }
 793
 794         return 0;
 795 }
 796
 797 struct moderec {
 798         int hdisplay;
 799         int vdisplay;
 800 };
 801
 802 static struct moderec scaler_modes[] = {
 803         { 1920, 1200 },
 804         { 1920, 1080 },
 805         { 1680, 1050 },
 806         { 1600, 1200 },
 807         { 1400, 1050 },
 808         { 1280, 1024 },
 809         { 1280, 960 },
 810         { 1152, 864 },
 811         { 1024, 768 },
 812         { 800, 600 },
 813         { 720, 400 },
 814         { 640, 480 },
 815         { 640, 400 },
 816         { 640, 350 },
 817         {}
 818 };
 819
 820 static int
 821 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 822 {
 823         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 824         struct drm_display_mode *native = nv_connector->native_mode, *m;
 825         struct drm_device *dev = connector->dev;
 826         struct moderec *mode = &scaler_modes[0];
 827         int modes = 0;
 828
 829         if (!native)
 830                 return 0;
 831
 832         while (mode->hdisplay) {
 833                 if (mode->hdisplay <= native->hdisplay &&
 834                     mode->vdisplay <= native->vdisplay &&
 835                     (mode->hdisplay != native->hdisplay ||
 836                      mode->vdisplay != native->vdisplay)) {
 837                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 838                                          drm_mode_vrefresh(native), false,
 839                                          false, false);
 840                         if (!m)
 841                                 continue;
 842
 843                         drm_mode_probed_add(connector, m);
 844                         modes++;
 845                 }
 846
 847                 mode++;
 848         }
 849
 850         return modes;
 851 }
 852
 853 static void
 854 nouveau_connector_detect_depth(struct drm_connector *connector)
 855 {
 856         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 857         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 858         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 859         struct nvbios *bios = &drm->vbios;
 860         struct drm_display_mode *mode = nv_connector->native_mode;
 861         bool duallink;
 862
 863         /* if the edid is feeling nice enough to provide this info, use it */
 864         if (nv_connector->edid && connector->display_info.bpc)
 865                 return;
 866
 867         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 868         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 869                 connector->display_info.bpc = 6;
 870                 return;
 871         }
 872
 873         /* we're out of options unless we're LVDS, default to 8bpc */
 874         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 875                 connector->display_info.bpc = 8;
 876                 return;
 877         }
 878
 879         connector->display_info.bpc = 6;
 880
 881         /* LVDS: panel straps */
 882         if (bios->fp_no_ddc) {
 883                 if (bios->fp.if_is_24bit)
 884                         connector->display_info.bpc = 8;
 885                 return;
 886         }
 887
 888         /* LVDS: DDC panel, need to first determine the number of links to
 889          * know which if_is_24bit flag to check...
 890          */
 891         if (nv_connector->edid &&
 892             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 893                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 894         else
 895                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 896
 897         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 898             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 899                 connector->display_info.bpc = 8;
 900 }
 901
 902 static int
 903 nouveau_connector_late_register(struct drm_connector *connector)
 904 {
 905         int ret;
 906
 907         ret = nouveau_backlight_init(connector);
 908
 909         return ret;
 910 }
 911
 912 static void
 913 nouveau_connector_early_unregister(struct drm_connector *connector)
 914 {
 915         nouveau_backlight_fini(connector);
 916 }
 917
 918 static int
 919 nouveau_connector_get_modes(struct drm_connector *connector)
 920 {
 921         struct drm_device *dev = connector->dev;
 922         struct nouveau_drm *drm = nouveau_drm(dev);
 923         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 924         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 925         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 926         int ret = 0;
 927
 928         /* destroy the native mode, the attached monitor could have changed.
 929          */
 930         if (nv_connector->native_mode) {
 931                 drm_mode_destroy(dev, nv_connector->native_mode);
 932                 nv_connector->native_mode = NULL;
 933         }
 934
 935         if (nv_connector->edid)
 936                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 937         else
 938         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 939             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 940              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 941                 struct drm_display_mode mode;
 942
 943                 nouveau_bios_fp_mode(dev, &mode);
 944                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 945         }
 946
 947         /* Determine display colour depth for everything except LVDS now,
 948          * DP requires this before mode_valid() is called.
 949          */
 950         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 951                 nouveau_connector_detect_depth(connector);
 952
 953         /* Find the native mode if this is a digital panel, if we didn't
 954          * find any modes through DDC previously add the native mode to
 955          * the list of modes.
 956          */
 957         if (!nv_connector->native_mode)
 958                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 959         if (ret == 0 && nv_connector->native_mode) {
 960                 struct drm_display_mode *mode;
 961
 962                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 963                 drm_mode_probed_add(connector, mode);
 964                 ret = 1;
 965         }
 966
 967         /* Determine LVDS colour depth, must happen after determining
 968          * "native" mode as some VBIOS tables require us to use the
 969          * pixel clock as part of the lookup...
 970          */
 971         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 972                 nouveau_connector_detect_depth(connector);
 973
 974         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 975                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 976
 977         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 978             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 979             nv_connector->type == DCB_CONNECTOR_eDP)
 980                 ret += nouveau_connector_scaler_modes_add(connector);
 981
 982         return ret;
 983 }
 984
 985 static unsigned
 986 get_tmds_link_bandwidth(struct drm_connector *connector)
 987 {
 988         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 989         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 990         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 991         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 992         struct drm_display_info *info = NULL;
 993         unsigned duallink_scale =
 994                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
 995
 996         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
 997                 info = &nv_connector->base.display_info;
 998                 duallink_scale = 1;
 999         }
1000
1001         if (info) {
1002                 if (nouveau_hdmimhz > 0)
1003                         return nouveau_hdmimhz * 1000;
1004                 /* Note: these limits are conservative, some Fermi's
1005                  * can do 297 MHz. Unclear how this can be determined.
1006                  */
1007                 if (drm->client.device.info.chipset >= 0x120) {
1008                         const int max_tmds_clock =
1009                                 info->hdmi.scdc.scrambling.supported ?
1010                                 594000 : 340000;
1011                         return info->max_tmds_clock ?
1012                                 min(info->max_tmds_clock, max_tmds_clock) :
1013                                 max_tmds_clock;
1014                 }
1015                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1016                         return 297000;
1017                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1018                         return 225000;
1019         }
1020
1021         if (dcb->location != DCB_LOC_ON_CHIP ||
1022             drm->client.device.info.chipset >= 0x46)
1023                 return 165000 * duallink_scale;
1024         else if (drm->client.device.info.chipset >= 0x40)
1025                 return 155000 * duallink_scale;
1026         else if (drm->client.device.info.chipset >= 0x18)
1027                 return 135000 * duallink_scale;
1028         else
1029                 return 112000 * duallink_scale;
1030 }
1031
1032 static enum drm_mode_status
1033 nouveau_connector_mode_valid(struct drm_connector *connector,
1034                              struct drm_display_mode *mode)
1035 {
1036         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1037         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1038         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1039         unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1040
1041         switch (nv_encoder->dcb->type) {
1042         case DCB_OUTPUT_LVDS:
1043                 if (nv_connector->native_mode &&
1044                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1045                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1046                         return MODE_PANEL;
1047
1048                 min_clock = 0;
1049                 max_clock = 400000;
1050                 break;
1051         case DCB_OUTPUT_TMDS:
1052                 max_clock = get_tmds_link_bandwidth(connector);
1053                 break;
1054         case DCB_OUTPUT_ANALOG:
1055                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1056                 if (!max_clock)
1057                         max_clock = 350000;
1058                 break;
1059         case DCB_OUTPUT_TV:
1060                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1061         case DCB_OUTPUT_DP:
1062                 return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1063         default:
1064                 BUG();
1065                 return MODE_BAD;
1066         }
1067
1068         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1069                 clock *= 2;
1070
1071         if (clock < min_clock)
1072                 return MODE_CLOCK_LOW;
1073         if (clock > max_clock)
1074                 return MODE_CLOCK_HIGH;
1075
1076         return MODE_OK;
1077 }
1078
1079 static struct drm_encoder *
1080 nouveau_connector_best_encoder(struct drm_connector *connector)
1081 {
1082         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1083
1084         if (nv_connector->detected_encoder)
1085                 return to_drm_encoder(nv_connector->detected_encoder);
1086
1087         return NULL;
1088 }
1089
1090 static const struct drm_connector_helper_funcs
1091 nouveau_connector_helper_funcs = {
1092         .get_modes = nouveau_connector_get_modes,
1093         .mode_valid = nouveau_connector_mode_valid,
1094         .best_encoder = nouveau_connector_best_encoder,
1095 };
1096
1097 static const struct drm_connector_funcs
1098 nouveau_connector_funcs = {
1099         .dpms = drm_helper_connector_dpms,
1100         .reset = nouveau_conn_reset,
1101         .detect = nouveau_connector_detect,
1102         .force = nouveau_connector_force,
1103         .fill_modes = drm_helper_probe_single_connector_modes,
1104         .set_property = nouveau_connector_set_property,
1105         .destroy = nouveau_connector_destroy,
1106         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1107         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1108         .atomic_set_property = nouveau_conn_atomic_set_property,
1109         .atomic_get_property = nouveau_conn_atomic_get_property,
1110         .late_register = nouveau_connector_late_register,
1111         .early_unregister = nouveau_connector_early_unregister,
1112 };
1113
1114 static const struct drm_connector_funcs
1115 nouveau_connector_funcs_lvds = {
1116         .dpms = drm_helper_connector_dpms,
1117         .reset = nouveau_conn_reset,
1118         .detect = nouveau_connector_detect_lvds,
1119         .force = nouveau_connector_force,
1120         .fill_modes = drm_helper_probe_single_connector_modes,
1121         .set_property = nouveau_connector_set_property,
1122         .destroy = nouveau_connector_destroy,
1123         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1124         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1125         .atomic_set_property = nouveau_conn_atomic_set_property,
1126         .atomic_get_property = nouveau_conn_atomic_get_property,
1127         .late_register = nouveau_connector_late_register,
1128         .early_unregister = nouveau_connector_early_unregister,
1129 };
1130
1131 void
1132 nouveau_connector_hpd(struct drm_connector *connector)
1133 {
1134         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1135         u32 mask = drm_connector_mask(connector);
1136
1137         mutex_lock(&drm->hpd_lock);
1138         if (!(drm->hpd_pending & mask)) {
1139                 drm->hpd_pending |= mask;
1140                 schedule_work(&drm->hpd_work);
1141         }
1142         mutex_unlock(&drm->hpd_lock);
1143 }
1144
1145 static int
1146 nouveau_connector_hotplug(struct nvif_notify *notify)
1147 {
1148         struct nouveau_connector *nv_connector =
1149                 container_of(notify, typeof(*nv_connector), hpd);
1150         struct drm_connector *connector = &nv_connector->base;
1151         struct drm_device *dev = connector->dev;
1152         struct nouveau_drm *drm = nouveau_drm(dev);
1153         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1154         bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1155
1156         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1157                 nouveau_dp_irq(drm, nv_connector);
1158                 return NVIF_NOTIFY_KEEP;
1159         }
1160
1161         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1162         nouveau_connector_hpd(connector);
1163
1164         return NVIF_NOTIFY_KEEP;
1165 }
1166
1167 static ssize_t
1168 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1169 {
1170         struct nouveau_connector *nv_connector =
1171                 container_of(obj, typeof(*nv_connector), aux);
1172         struct nouveau_encoder *nv_encoder;
1173         struct nvkm_i2c_aux *aux;
1174         u8 size = msg->size;
1175         int ret;
1176
1177         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1178         if (!nv_encoder || !(aux = nv_encoder->aux))
1179                 return -ENODEV;
1180         if (WARN_ON(msg->size > 16))
1181                 return -E2BIG;
1182
1183         ret = nvkm_i2c_aux_acquire(aux);
1184         if (ret)
1185                 return ret;
1186
1187         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1188                                 msg->buffer, &size);
1189         nvkm_i2c_aux_release(aux);
1190         if (ret >= 0) {
1191                 msg->reply = ret;
1192                 return size;
1193         }
1194
1195         return ret;
1196 }
1197
1198 static int
1199 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1200 {
1201         switch (dcb) {
1202         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1203         case DCB_CONNECTOR_TV_0     :
1204         case DCB_CONNECTOR_TV_1     :
1205         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1206         case DCB_CONNECTOR_DMS59_0  :
1207         case DCB_CONNECTOR_DMS59_1  :
1208         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1209         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1210         case DCB_CONNECTOR_LVDS     :
1211         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1212         case DCB_CONNECTOR_DMS59_DP0:
1213         case DCB_CONNECTOR_DMS59_DP1:
1214         case DCB_CONNECTOR_DP       :
1215         case DCB_CONNECTOR_mDP      :
1216         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1217         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1218         case DCB_CONNECTOR_HDMI_0   :
1219         case DCB_CONNECTOR_HDMI_1   :
1220         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1221         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1222         default:
1223                 break;
1224         }
1225
1226         return DRM_MODE_CONNECTOR_Unknown;
1227 }
1228
1229 struct drm_connector *
1230 nouveau_connector_create(struct drm_device *dev,
1231                          const struct dcb_output *dcbe)
1232 {
1233         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1234         struct nouveau_drm *drm = nouveau_drm(dev);
1235         struct nouveau_display *disp = nouveau_display(dev);
1236         struct nouveau_connector *nv_connector = NULL;
1237         struct drm_connector *connector;
1238         struct drm_connector_list_iter conn_iter;
1239         char aux_name[48] = {0};
1240         int index = dcbe->connector;
1241         int type, ret = 0;
1242         bool dummy;
1243
1244         drm_connector_list_iter_begin(dev, &conn_iter);
1245         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1246                 nv_connector = nouveau_connector(connector);
1247                 if (nv_connector->index == index) {
1248                         drm_connector_list_iter_end(&conn_iter);
1249                         return connector;
1250                 }
1251         }
1252         drm_connector_list_iter_end(&conn_iter);
1253
1254         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1255         if (!nv_connector)
1256                 return ERR_PTR(-ENOMEM);
1257
1258         connector = &nv_connector->base;
1259         nv_connector->index = index;
1260
1261         /* attempt to parse vbios connector type and hotplug gpio */
1262         nv_connector->dcb = olddcb_conn(dev, index);
1263         if (nv_connector->dcb) {
1264                 u32 entry = ROM16(nv_connector->dcb[0]);
1265                 if (olddcb_conntab(dev)[3] >= 4)
1266                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1267
1268                 nv_connector->type = nv_connector->dcb[0];
1269                 if (drm_conntype_from_dcb(nv_connector->type) ==
1270                                           DRM_MODE_CONNECTOR_Unknown) {
1271                         NV_WARN(drm, "unknown connector type %02x\n",
1272                                 nv_connector->type);
1273                         nv_connector->type = DCB_CONNECTOR_NONE;
1274                 }
1275
1276                 /* Gigabyte NX85T */
1277                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1278                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1279                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1280                 }
1281
1282                 /* Gigabyte GV-NX86T512H */
1283                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1284                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1285                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1286                 }
1287         } else {
1288                 nv_connector->type = DCB_CONNECTOR_NONE;
1289         }
1290
1291         /* no vbios data, or an unknown dcb connector type - attempt to
1292          * figure out something suitable ourselves
1293          */
1294         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1295                 struct nouveau_drm *drm = nouveau_drm(dev);
1296                 struct dcb_table *dcbt = &drm->vbios.dcb;
1297                 u32 encoders = 0;
1298                 int i;
1299
1300                 for (i = 0; i < dcbt->entries; i++) {
1301                         if (dcbt->entry[i].connector == nv_connector->index)
1302                                 encoders |= (1 << dcbt->entry[i].type);
1303                 }
1304
1305                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1306                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1307                                 nv_connector->type = DCB_CONNECTOR_DP;
1308                         else
1309                                 nv_connector->type = DCB_CONNECTOR_eDP;
1310                 } else
1311                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1312                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1313                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1314                         else
1315                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1316                 } else
1317                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1318                         nv_connector->type = DCB_CONNECTOR_VGA;
1319                 } else
1320                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1321                         nv_connector->type = DCB_CONNECTOR_LVDS;
1322                 } else
1323                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1324                         nv_connector->type = DCB_CONNECTOR_TV_0;
1325                 }
1326         }
1327
1328         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1329         case DRM_MODE_CONNECTOR_LVDS:
1330                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1331                 if (ret) {
1332                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1333                         kfree(nv_connector);
1334                         return ERR_PTR(ret);
1335                 }
1336
1337                 funcs = &nouveau_connector_funcs_lvds;
1338                 break;
1339         case DRM_MODE_CONNECTOR_DisplayPort:
1340         case DRM_MODE_CONNECTOR_eDP:
1341                 nv_connector->aux.dev = connector->kdev;
1342                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1343                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1344                          dcbe->hasht, dcbe->hashm);
1345                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1346                 ret = drm_dp_aux_register(&nv_connector->aux);
1347                 if (ret) {
1348                         NV_ERROR(drm, "failed to register aux channel\n");
1349                         kfree(nv_connector);
1350                         return ERR_PTR(ret);
1351                 }
1352                 funcs = &nouveau_connector_funcs;
1353                 break;
1354         default:
1355                 funcs = &nouveau_connector_funcs;
1356                 break;
1357         }
1358
1359         /* HDMI 3D support */
1360         if ((disp->disp.object.oclass >= G82_DISP)
1361             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1362                 || (type == DRM_MODE_CONNECTOR_eDP)
1363                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1364                 connector->stereo_allowed = true;
1365
1366         /* defaults, will get overridden in detect() */
1367         connector->interlace_allowed = false;
1368         connector->doublescan_allowed = false;
1369
1370         drm_connector_init(dev, connector, funcs, type);
1371         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1372
1373         connector->funcs->reset(connector);
1374         nouveau_conn_attach_properties(connector);
1375
1376         /* Default scaling mode */
1377         switch (nv_connector->type) {
1378         case DCB_CONNECTOR_LVDS:
1379         case DCB_CONNECTOR_LVDS_SPWG:
1380         case DCB_CONNECTOR_eDP:
1381                 /* see note in nouveau_connector_set_property() */
1382                 if (disp->disp.object.oclass < NV50_DISP) {
1383                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1384                         break;
1385                 }
1386                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1387                 break;
1388         default:
1389                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1390                 break;
1391         }
1392
1393         /* dithering properties */
1394         switch (nv_connector->type) {
1395         case DCB_CONNECTOR_TV_0:
1396         case DCB_CONNECTOR_TV_1:
1397         case DCB_CONNECTOR_TV_3:
1398         case DCB_CONNECTOR_VGA:
1399                 break;
1400         default:
1401                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1402                 break;
1403         }
1404
1405         switch (type) {
1406         case DRM_MODE_CONNECTOR_DisplayPort:
1407         case DRM_MODE_CONNECTOR_eDP:
1408                 drm_dp_cec_register_connector(&nv_connector->aux, connector);
1409                 break;
1410         }
1411
1412         ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1413                                nouveau_connector_hotplug,
1414                                true, NV04_DISP_NTFY_CONN,
1415                                &(struct nvif_notify_conn_req_v0) {
1416                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1417                                 .conn = index,
1418                                },
1419                                sizeof(struct nvif_notify_conn_req_v0),
1420                                sizeof(struct nvif_notify_conn_rep_v0),
1421                                &nv_connector->hpd);
1422         if (ret)
1423                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1424         else
1425                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1426
1427         drm_connector_register(connector);
1428         return connector;
1429 }