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