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 "nouveau_acpi.h"
  42
  43 #include "nouveau_display.h"
  44 #include "nouveau_connector.h"
  45 #include "nouveau_encoder.h"
  46 #include "nouveau_crtc.h"
  47
  48 #include <nvif/class.h>
  49 #include <nvif/cl0046.h>
  50 #include <nvif/event.h>
  51
  52 struct drm_display_mode *
  53 nouveau_conn_native_mode(struct drm_connector *connector)
  54 {
  55         const struct drm_connector_helper_funcs *helper = connector->helper_private;
  56         struct nouveau_drm *drm = nouveau_drm(connector->dev);
  57         struct drm_device *dev = connector->dev;
  58         struct drm_display_mode *mode, *largest = NULL;
  59         int high_w = 0, high_h = 0, high_v = 0;
  60
  61         list_for_each_entry(mode, &connector->probed_modes, head) {
  62                 mode->vrefresh = drm_mode_vrefresh(mode);
  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                     mode->vrefresh < high_v)
  84                         continue;
  85
  86                 high_w = mode->hdisplay;
  87                 high_h = mode->vdisplay;
  88                 high_v = mode->vrefresh;
  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_conn_atom *asyc;
 249
 250         if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 251                 return;
 252
 253         if (connector->state)
 254                 nouveau_conn_atomic_destroy_state(connector, connector->state);
 255         __drm_atomic_helper_connector_reset(connector, &asyc->state);
 256         asyc->dither.mode = DITHERING_MODE_AUTO;
 257         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 258         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 259         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 260         asyc->procamp.color_vibrance = 150;
 261         asyc->procamp.vibrant_hue = 90;
 262
 263         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 264                 switch (connector->connector_type) {
 265                 case DRM_MODE_CONNECTOR_LVDS:
 266                         /* See note in nouveau_conn_atomic_set_property(). */
 267                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 268                         break;
 269                 default:
 270                         break;
 271                 }
 272         }
 273 }
 274
 275 void
 276 nouveau_conn_attach_properties(struct drm_connector *connector)
 277 {
 278         struct drm_device *dev = connector->dev;
 279         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 280         struct nouveau_display *disp = nouveau_display(dev);
 281
 282         /* Init DVI-I specific properties. */
 283         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 284                 drm_object_attach_property(&connector->base, dev->mode_config.
 285                                            dvi_i_subconnector_property, 0);
 286
 287         /* Add overscan compensation options to digital outputs. */
 288         if (disp->underscan_property &&
 289             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 290              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 291              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 292              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 293                 drm_object_attach_property(&connector->base,
 294                                            disp->underscan_property,
 295                                            UNDERSCAN_OFF);
 296                 drm_object_attach_property(&connector->base,
 297                                            disp->underscan_hborder_property, 0);
 298                 drm_object_attach_property(&connector->base,
 299                                            disp->underscan_vborder_property, 0);
 300         }
 301
 302         /* Add hue and saturation options. */
 303         if (disp->vibrant_hue_property)
 304                 drm_object_attach_property(&connector->base,
 305                                            disp->vibrant_hue_property,
 306                                            armc->procamp.vibrant_hue);
 307         if (disp->color_vibrance_property)
 308                 drm_object_attach_property(&connector->base,
 309                                            disp->color_vibrance_property,
 310                                            armc->procamp.color_vibrance);
 311
 312         /* Scaling mode property. */
 313         switch (connector->connector_type) {
 314         case DRM_MODE_CONNECTOR_TV:
 315                 break;
 316         case DRM_MODE_CONNECTOR_VGA:
 317                 if (disp->disp.object.oclass < NV50_DISP)
 318                         break; /* Can only scale on DFPs. */
 319                 /* Fall-through. */
 320         default:
 321                 drm_object_attach_property(&connector->base, dev->mode_config.
 322                                            scaling_mode_property,
 323                                            armc->scaler.mode);
 324                 break;
 325         }
 326
 327         /* Dithering properties. */
 328         switch (connector->connector_type) {
 329         case DRM_MODE_CONNECTOR_TV:
 330         case DRM_MODE_CONNECTOR_VGA:
 331                 break;
 332         default:
 333                 if (disp->dithering_mode) {
 334                         drm_object_attach_property(&connector->base,
 335                                                    disp->dithering_mode,
 336                                                    armc->dither.mode);
 337                 }
 338                 if (disp->dithering_depth) {
 339                         drm_object_attach_property(&connector->base,
 340                                                    disp->dithering_depth,
 341                                                    armc->dither.depth);
 342                 }
 343                 break;
 344         }
 345 }
 346
 347 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 348 int nouveau_tv_disable = 0;
 349 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 350
 351 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 352 int nouveau_ignorelid = 0;
 353 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 354
 355 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 356 int nouveau_duallink = 1;
 357 module_param_named(duallink, nouveau_duallink, int, 0400);
 358
 359 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 360 int nouveau_hdmimhz = 0;
 361 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 362
 363 struct nouveau_encoder *
 364 find_encoder(struct drm_connector *connector, int type)
 365 {
 366         struct nouveau_encoder *nv_encoder;
 367         struct drm_encoder *enc;
 368         int i;
 369
 370         drm_connector_for_each_possible_encoder(connector, enc, i) {
 371                 nv_encoder = nouveau_encoder(enc);
 372
 373                 if (type == DCB_OUTPUT_ANY ||
 374                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
 375                         return nv_encoder;
 376         }
 377
 378         return NULL;
 379 }
 380
 381 struct nouveau_connector *
 382 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
 383 {
 384         struct drm_device *dev = to_drm_encoder(encoder)->dev;
 385         struct drm_connector *drm_connector;
 386
 387         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 388                 if (drm_connector->encoder == to_drm_encoder(encoder))
 389                         return nouveau_connector(drm_connector);
 390         }
 391
 392         return NULL;
 393 }
 394
 395 static void
 396 nouveau_connector_destroy(struct drm_connector *connector)
 397 {
 398         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 399         nvif_notify_fini(&nv_connector->hpd);
 400         kfree(nv_connector->edid);
 401         drm_connector_unregister(connector);
 402         drm_connector_cleanup(connector);
 403         if (nv_connector->aux.transfer) {
 404                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 405                 drm_dp_aux_unregister(&nv_connector->aux);
 406                 kfree(nv_connector->aux.name);
 407         }
 408         kfree(connector);
 409 }
 410
 411 static struct nouveau_encoder *
 412 nouveau_connector_ddc_detect(struct drm_connector *connector)
 413 {
 414         struct drm_device *dev = connector->dev;
 415         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 416         struct drm_encoder *encoder;
 417         int i, ret;
 418         bool switcheroo_ddc = false;
 419
 420         drm_connector_for_each_possible_encoder(connector, encoder, i) {
 421                 nv_encoder = nouveau_encoder(encoder);
 422
 423                 switch (nv_encoder->dcb->type) {
 424                 case DCB_OUTPUT_DP:
 425                         ret = nouveau_dp_detect(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                 /* fall-through */
 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                 connector->interlace_allowed = true;
 500                 connector->doublescan_allowed = true;
 501         } else
 502         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 503             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 504                 connector->doublescan_allowed = false;
 505                 connector->interlace_allowed = false;
 506         } else {
 507                 connector->doublescan_allowed = true;
 508                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 509                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 510                      (dev->pdev->device & 0x0ff0) != 0x0100 &&
 511                      (dev->pdev->device & 0x0ff0) != 0x0150))
 512                         /* HW is broken */
 513                         connector->interlace_allowed = false;
 514                 else
 515                         connector->interlace_allowed = true;
 516         }
 517
 518         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 519                 drm_object_property_set_value(&connector->base,
 520                         dev->mode_config.dvi_i_subconnector_property,
 521                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 522                         DRM_MODE_SUBCONNECTOR_DVID :
 523                         DRM_MODE_SUBCONNECTOR_DVIA);
 524         }
 525 }
 526
 527 static enum drm_connector_status
 528 nouveau_connector_detect(struct drm_connector *connector, bool force)
 529 {
 530         struct drm_device *dev = connector->dev;
 531         struct nouveau_drm *drm = nouveau_drm(dev);
 532         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 533         struct nouveau_encoder *nv_encoder = NULL;
 534         struct nouveau_encoder *nv_partner;
 535         struct i2c_adapter *i2c;
 536         int type;
 537         int ret;
 538         enum drm_connector_status conn_status = connector_status_disconnected;
 539
 540         /* Cleanup the previous EDID block. */
 541         if (nv_connector->edid) {
 542                 drm_connector_update_edid_property(connector, NULL);
 543                 kfree(nv_connector->edid);
 544                 nv_connector->edid = NULL;
 545         }
 546
 547         /* Outputs are only polled while runtime active, so resuming the
 548          * device here is unnecessary (and would deadlock upon runtime suspend
 549          * because it waits for polling to finish). We do however, want to
 550          * prevent the autosuspend timer from elapsing during this operation
 551          * if possible.
 552          */
 553         if (drm_kms_helper_is_poll_worker()) {
 554                 pm_runtime_get_noresume(dev->dev);
 555         } else {
 556                 ret = pm_runtime_get_sync(dev->dev);
 557                 if (ret < 0 && ret != -EACCES)
 558                         return conn_status;
 559         }
 560
 561         nv_encoder = nouveau_connector_ddc_detect(connector);
 562         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 563                 if ((vga_switcheroo_handler_flags() &
 564                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 565                     nv_connector->type == DCB_CONNECTOR_LVDS)
 566                         nv_connector->edid = drm_get_edid_switcheroo(connector,
 567                                                                      i2c);
 568                 else
 569                         nv_connector->edid = drm_get_edid(connector, i2c);
 570
 571                 drm_connector_update_edid_property(connector,
 572                                                         nv_connector->edid);
 573                 if (!nv_connector->edid) {
 574                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 575                                  connector->name);
 576                         goto detect_analog;
 577                 }
 578
 579                 /* Override encoder type for DVI-I based on whether EDID
 580                  * says the display is digital or analog, both use the
 581                  * same i2c channel so the value returned from ddc_detect
 582                  * isn't necessarily correct.
 583                  */
 584                 nv_partner = NULL;
 585                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 586                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 587                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 588                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 589
 590                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 591                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 592                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 593                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 594                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 595                                 type = DCB_OUTPUT_TMDS;
 596                         else
 597                                 type = DCB_OUTPUT_ANALOG;
 598
 599                         nv_encoder = find_encoder(connector, type);
 600                 }
 601
 602                 nouveau_connector_set_encoder(connector, nv_encoder);
 603                 conn_status = connector_status_connected;
 604                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 605                 goto out;
 606         }
 607
 608         nv_encoder = nouveau_connector_of_detect(connector);
 609         if (nv_encoder) {
 610                 nouveau_connector_set_encoder(connector, nv_encoder);
 611                 conn_status = connector_status_connected;
 612                 goto out;
 613         }
 614
 615 detect_analog:
 616         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 617         if (!nv_encoder && !nouveau_tv_disable)
 618                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 619         if (nv_encoder && force) {
 620                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 621                 const struct drm_encoder_helper_funcs *helper =
 622                                                 encoder->helper_private;
 623
 624                 if (helper->detect(encoder, connector) ==
 625                                                 connector_status_connected) {
 626                         nouveau_connector_set_encoder(connector, nv_encoder);
 627                         conn_status = connector_status_connected;
 628                         goto out;
 629                 }
 630
 631         }
 632
 633  out:
 634
 635         pm_runtime_mark_last_busy(dev->dev);
 636         pm_runtime_put_autosuspend(dev->dev);
 637
 638         return conn_status;
 639 }
 640
 641 static enum drm_connector_status
 642 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 643 {
 644         struct drm_device *dev = connector->dev;
 645         struct nouveau_drm *drm = nouveau_drm(dev);
 646         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 647         struct nouveau_encoder *nv_encoder = NULL;
 648         enum drm_connector_status status = connector_status_disconnected;
 649
 650         /* Cleanup the previous EDID block. */
 651         if (nv_connector->edid) {
 652                 drm_connector_update_edid_property(connector, NULL);
 653                 kfree(nv_connector->edid);
 654                 nv_connector->edid = NULL;
 655         }
 656
 657         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 658         if (!nv_encoder)
 659                 return connector_status_disconnected;
 660
 661         /* Try retrieving EDID via DDC */
 662         if (!drm->vbios.fp_no_ddc) {
 663                 status = nouveau_connector_detect(connector, force);
 664                 if (status == connector_status_connected)
 665                         goto out;
 666         }
 667
 668         /* On some laptops (Sony, i'm looking at you) there appears to
 669          * be no direct way of accessing the panel's EDID.  The only
 670          * option available to us appears to be to ask ACPI for help..
 671          *
 672          * It's important this check's before trying straps, one of the
 673          * said manufacturer's laptops are configured in such a way
 674          * the nouveau decides an entry in the VBIOS FP mode table is
 675          * valid - it's not (rh#613284)
 676          */
 677         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 678                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 679                         status = connector_status_connected;
 680                         goto out;
 681                 }
 682         }
 683
 684         /* If no EDID found above, and the VBIOS indicates a hardcoded
 685          * modeline is avalilable for the panel, set it as the panel's
 686          * native mode and exit.
 687          */
 688         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 689             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 690                 status = connector_status_connected;
 691                 goto out;
 692         }
 693
 694         /* Still nothing, some VBIOS images have a hardcoded EDID block
 695          * stored for the panel stored in them.
 696          */
 697         if (!drm->vbios.fp_no_ddc) {
 698                 struct edid *edid =
 699                         (struct edid *)nouveau_bios_embedded_edid(dev);
 700                 if (edid) {
 701                         nv_connector->edid =
 702                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 703                         if (nv_connector->edid)
 704                                 status = connector_status_connected;
 705                 }
 706         }
 707
 708 out:
 709 #if defined(CONFIG_ACPI_BUTTON) || \
 710         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 711         if (status == connector_status_connected &&
 712             !nouveau_ignorelid && !acpi_lid_open())
 713                 status = connector_status_unknown;
 714 #endif
 715
 716         drm_connector_update_edid_property(connector, nv_connector->edid);
 717         nouveau_connector_set_encoder(connector, nv_encoder);
 718         return status;
 719 }
 720
 721 static void
 722 nouveau_connector_force(struct drm_connector *connector)
 723 {
 724         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 725         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 726         struct nouveau_encoder *nv_encoder;
 727         int type;
 728
 729         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 730                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 731                         type = DCB_OUTPUT_TMDS;
 732                 else
 733                         type = DCB_OUTPUT_ANALOG;
 734         } else
 735                 type = DCB_OUTPUT_ANY;
 736
 737         nv_encoder = find_encoder(connector, type);
 738         if (!nv_encoder) {
 739                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 740                          connector->name);
 741                 connector->status = connector_status_disconnected;
 742                 return;
 743         }
 744
 745         nouveau_connector_set_encoder(connector, nv_encoder);
 746 }
 747
 748 static int
 749 nouveau_connector_set_property(struct drm_connector *connector,
 750                                struct drm_property *property, uint64_t value)
 751 {
 752         struct nouveau_conn_atom *asyc = nouveau_conn_atom(connector->state);
 753         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 754         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 755         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 756         int ret;
 757
 758         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 759                                                     &asyc->state,
 760                                                     property, value);
 761         if (ret) {
 762                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 763                         return get_slave_funcs(encoder)->set_property(
 764                                 encoder, connector, property, value);
 765                 return ret;
 766         }
 767
 768         nv_connector->scaling_mode = asyc->scaler.mode;
 769         nv_connector->dithering_mode = asyc->dither.mode;
 770
 771         if (connector->encoder && connector->encoder->crtc) {
 772                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 773                                               &connector->encoder->crtc->mode,
 774                                                connector->encoder->crtc->x,
 775                                                connector->encoder->crtc->y,
 776                                                NULL);
 777                 if (!ret)
 778                         return -EINVAL;
 779         }
 780
 781         return 0;
 782 }
 783
 784 struct moderec {
 785         int hdisplay;
 786         int vdisplay;
 787 };
 788
 789 static struct moderec scaler_modes[] = {
 790         { 1920, 1200 },
 791         { 1920, 1080 },
 792         { 1680, 1050 },
 793         { 1600, 1200 },
 794         { 1400, 1050 },
 795         { 1280, 1024 },
 796         { 1280, 960 },
 797         { 1152, 864 },
 798         { 1024, 768 },
 799         { 800, 600 },
 800         { 720, 400 },
 801         { 640, 480 },
 802         { 640, 400 },
 803         { 640, 350 },
 804         {}
 805 };
 806
 807 static int
 808 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 809 {
 810         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 811         struct drm_display_mode *native = nv_connector->native_mode, *m;
 812         struct drm_device *dev = connector->dev;
 813         struct moderec *mode = &scaler_modes[0];
 814         int modes = 0;
 815
 816         if (!native)
 817                 return 0;
 818
 819         while (mode->hdisplay) {
 820                 if (mode->hdisplay <= native->hdisplay &&
 821                     mode->vdisplay <= native->vdisplay &&
 822                     (mode->hdisplay != native->hdisplay ||
 823                      mode->vdisplay != native->vdisplay)) {
 824                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 825                                          drm_mode_vrefresh(native), false,
 826                                          false, false);
 827                         if (!m)
 828                                 continue;
 829
 830                         drm_mode_probed_add(connector, m);
 831                         modes++;
 832                 }
 833
 834                 mode++;
 835         }
 836
 837         return modes;
 838 }
 839
 840 static void
 841 nouveau_connector_detect_depth(struct drm_connector *connector)
 842 {
 843         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 844         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 845         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 846         struct nvbios *bios = &drm->vbios;
 847         struct drm_display_mode *mode = nv_connector->native_mode;
 848         bool duallink;
 849
 850         /* if the edid is feeling nice enough to provide this info, use it */
 851         if (nv_connector->edid && connector->display_info.bpc)
 852                 return;
 853
 854         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 855         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 856                 connector->display_info.bpc = 6;
 857                 return;
 858         }
 859
 860         /* we're out of options unless we're LVDS, default to 8bpc */
 861         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 862                 connector->display_info.bpc = 8;
 863                 return;
 864         }
 865
 866         connector->display_info.bpc = 6;
 867
 868         /* LVDS: panel straps */
 869         if (bios->fp_no_ddc) {
 870                 if (bios->fp.if_is_24bit)
 871                         connector->display_info.bpc = 8;
 872                 return;
 873         }
 874
 875         /* LVDS: DDC panel, need to first determine the number of links to
 876          * know which if_is_24bit flag to check...
 877          */
 878         if (nv_connector->edid &&
 879             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 880                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 881         else
 882                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 883
 884         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 885             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 886                 connector->display_info.bpc = 8;
 887 }
 888
 889 static int
 890 nouveau_connector_late_register(struct drm_connector *connector)
 891 {
 892         int ret;
 893
 894         ret = nouveau_backlight_init(connector);
 895
 896         return ret;
 897 }
 898
 899 static void
 900 nouveau_connector_early_unregister(struct drm_connector *connector)
 901 {
 902         nouveau_backlight_fini(connector);
 903 }
 904
 905 static int
 906 nouveau_connector_get_modes(struct drm_connector *connector)
 907 {
 908         struct drm_device *dev = connector->dev;
 909         struct nouveau_drm *drm = nouveau_drm(dev);
 910         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 911         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 912         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 913         int ret = 0;
 914
 915         /* destroy the native mode, the attached monitor could have changed.
 916          */
 917         if (nv_connector->native_mode) {
 918                 drm_mode_destroy(dev, nv_connector->native_mode);
 919                 nv_connector->native_mode = NULL;
 920         }
 921
 922         if (nv_connector->edid)
 923                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 924         else
 925         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 926             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 927              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 928                 struct drm_display_mode mode;
 929
 930                 nouveau_bios_fp_mode(dev, &mode);
 931                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 932         }
 933
 934         /* Determine display colour depth for everything except LVDS now,
 935          * DP requires this before mode_valid() is called.
 936          */
 937         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 938                 nouveau_connector_detect_depth(connector);
 939
 940         /* Find the native mode if this is a digital panel, if we didn't
 941          * find any modes through DDC previously add the native mode to
 942          * the list of modes.
 943          */
 944         if (!nv_connector->native_mode)
 945                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 946         if (ret == 0 && nv_connector->native_mode) {
 947                 struct drm_display_mode *mode;
 948
 949                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 950                 drm_mode_probed_add(connector, mode);
 951                 ret = 1;
 952         }
 953
 954         /* Determine LVDS colour depth, must happen after determining
 955          * "native" mode as some VBIOS tables require us to use the
 956          * pixel clock as part of the lookup...
 957          */
 958         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 959                 nouveau_connector_detect_depth(connector);
 960
 961         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 962                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 963
 964         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 965             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 966             nv_connector->type == DCB_CONNECTOR_eDP)
 967                 ret += nouveau_connector_scaler_modes_add(connector);
 968
 969         return ret;
 970 }
 971
 972 static unsigned
 973 get_tmds_link_bandwidth(struct drm_connector *connector)
 974 {
 975         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 976         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 977         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 978         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 979         struct drm_display_info *info = NULL;
 980         unsigned duallink_scale =
 981                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
 982
 983         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
 984                 info = &nv_connector->base.display_info;
 985                 duallink_scale = 1;
 986         }
 987
 988         if (info) {
 989                 if (nouveau_hdmimhz > 0)
 990                         return nouveau_hdmimhz * 1000;
 991                 /* Note: these limits are conservative, some Fermi's
 992                  * can do 297 MHz. Unclear how this can be determined.
 993                  */
 994                 if (drm->client.device.info.chipset >= 0x120) {
 995                         const int max_tmds_clock =
 996                                 info->hdmi.scdc.scrambling.supported ?
 997                                 594000 : 340000;
 998                         return info->max_tmds_clock ?
 999                                 min(info->max_tmds_clock, max_tmds_clock) :
1000                                 max_tmds_clock;
1001                 }
1002                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1003                         return 297000;
1004                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1005                         return 225000;
1006         }
1007
1008         if (dcb->location != DCB_LOC_ON_CHIP ||
1009             drm->client.device.info.chipset >= 0x46)
1010                 return 165000 * duallink_scale;
1011         else if (drm->client.device.info.chipset >= 0x40)
1012                 return 155000 * duallink_scale;
1013         else if (drm->client.device.info.chipset >= 0x18)
1014                 return 135000 * duallink_scale;
1015         else
1016                 return 112000 * duallink_scale;
1017 }
1018
1019 static enum drm_mode_status
1020 nouveau_connector_mode_valid(struct drm_connector *connector,
1021                              struct drm_display_mode *mode)
1022 {
1023         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1024         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1025         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1026         unsigned min_clock = 25000, max_clock = min_clock;
1027         unsigned clock = mode->clock;
1028
1029         switch (nv_encoder->dcb->type) {
1030         case DCB_OUTPUT_LVDS:
1031                 if (nv_connector->native_mode &&
1032                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1033                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1034                         return MODE_PANEL;
1035
1036                 min_clock = 0;
1037                 max_clock = 400000;
1038                 break;
1039         case DCB_OUTPUT_TMDS:
1040                 max_clock = get_tmds_link_bandwidth(connector);
1041                 break;
1042         case DCB_OUTPUT_ANALOG:
1043                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1044                 if (!max_clock)
1045                         max_clock = 350000;
1046                 break;
1047         case DCB_OUTPUT_TV:
1048                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1049         case DCB_OUTPUT_DP:
1050                 max_clock  = nv_encoder->dp.link_nr;
1051                 max_clock *= nv_encoder->dp.link_bw;
1052                 clock = clock * (connector->display_info.bpc * 3) / 10;
1053                 break;
1054         default:
1055                 BUG();
1056                 return MODE_BAD;
1057         }
1058
1059         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1060                 clock *= 2;
1061
1062         if (clock < min_clock)
1063                 return MODE_CLOCK_LOW;
1064
1065         if (clock > max_clock)
1066                 return MODE_CLOCK_HIGH;
1067
1068         return MODE_OK;
1069 }
1070
1071 static struct drm_encoder *
1072 nouveau_connector_best_encoder(struct drm_connector *connector)
1073 {
1074         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1075
1076         if (nv_connector->detected_encoder)
1077                 return to_drm_encoder(nv_connector->detected_encoder);
1078
1079         return NULL;
1080 }
1081
1082 static const struct drm_connector_helper_funcs
1083 nouveau_connector_helper_funcs = {
1084         .get_modes = nouveau_connector_get_modes,
1085         .mode_valid = nouveau_connector_mode_valid,
1086         .best_encoder = nouveau_connector_best_encoder,
1087 };
1088
1089 static const struct drm_connector_funcs
1090 nouveau_connector_funcs = {
1091         .dpms = drm_helper_connector_dpms,
1092         .reset = nouveau_conn_reset,
1093         .detect = nouveau_connector_detect,
1094         .force = nouveau_connector_force,
1095         .fill_modes = drm_helper_probe_single_connector_modes,
1096         .set_property = nouveau_connector_set_property,
1097         .destroy = nouveau_connector_destroy,
1098         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1099         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1100         .atomic_set_property = nouveau_conn_atomic_set_property,
1101         .atomic_get_property = nouveau_conn_atomic_get_property,
1102         .late_register = nouveau_connector_late_register,
1103         .early_unregister = nouveau_connector_early_unregister,
1104 };
1105
1106 static const struct drm_connector_funcs
1107 nouveau_connector_funcs_lvds = {
1108         .dpms = drm_helper_connector_dpms,
1109         .reset = nouveau_conn_reset,
1110         .detect = nouveau_connector_detect_lvds,
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 int
1124 nouveau_connector_hotplug(struct nvif_notify *notify)
1125 {
1126         struct nouveau_connector *nv_connector =
1127                 container_of(notify, typeof(*nv_connector), hpd);
1128         struct drm_connector *connector = &nv_connector->base;
1129         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1130         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1131         const char *name = connector->name;
1132         struct nouveau_encoder *nv_encoder;
1133         int ret;
1134
1135         ret = pm_runtime_get(drm->dev->dev);
1136         if (ret == 0) {
1137                 /* We can't block here if there's a pending PM request
1138                  * running, as we'll deadlock nouveau_display_fini() when it
1139                  * calls nvif_put() on our nvif_notify struct. So, simply
1140                  * defer the hotplug event until the device finishes resuming
1141                  */
1142                 NV_DEBUG(drm, "Deferring HPD on %s until runtime resume\n",
1143                          name);
1144                 schedule_work(&drm->hpd_work);
1145
1146                 pm_runtime_put_noidle(drm->dev->dev);
1147                 return NVIF_NOTIFY_KEEP;
1148         } else if (ret != 1 && ret != -EACCES) {
1149                 NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
1150                         name, ret);
1151                 return NVIF_NOTIFY_DROP;
1152         }
1153
1154         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1155                 NV_DEBUG(drm, "service %s\n", name);
1156                 drm_dp_cec_irq(&nv_connector->aux);
1157                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1158                         nv50_mstm_service(nv_encoder->dp.mstm);
1159         } else {
1160                 bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1161
1162                 if (!plugged)
1163                         drm_dp_cec_unset_edid(&nv_connector->aux);
1164                 NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1165                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1166                         if (!plugged)
1167                                 nv50_mstm_remove(nv_encoder->dp.mstm);
1168                 }
1169
1170                 drm_helper_hpd_irq_event(connector->dev);
1171         }
1172
1173         pm_runtime_mark_last_busy(drm->dev->dev);
1174         pm_runtime_put_autosuspend(drm->dev->dev);
1175         return NVIF_NOTIFY_KEEP;
1176 }
1177
1178 static ssize_t
1179 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1180 {
1181         struct nouveau_connector *nv_connector =
1182                 container_of(obj, typeof(*nv_connector), aux);
1183         struct nouveau_encoder *nv_encoder;
1184         struct nvkm_i2c_aux *aux;
1185         u8 size = msg->size;
1186         int ret;
1187
1188         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1189         if (!nv_encoder || !(aux = nv_encoder->aux))
1190                 return -ENODEV;
1191         if (WARN_ON(msg->size > 16))
1192                 return -E2BIG;
1193
1194         ret = nvkm_i2c_aux_acquire(aux);
1195         if (ret)
1196                 return ret;
1197
1198         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1199                                 msg->buffer, &size);
1200         nvkm_i2c_aux_release(aux);
1201         if (ret >= 0) {
1202                 msg->reply = ret;
1203                 return size;
1204         }
1205
1206         return ret;
1207 }
1208
1209 static int
1210 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1211 {
1212         switch (dcb) {
1213         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1214         case DCB_CONNECTOR_TV_0     :
1215         case DCB_CONNECTOR_TV_1     :
1216         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1217         case DCB_CONNECTOR_DMS59_0  :
1218         case DCB_CONNECTOR_DMS59_1  :
1219         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1220         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1221         case DCB_CONNECTOR_LVDS     :
1222         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1223         case DCB_CONNECTOR_DMS59_DP0:
1224         case DCB_CONNECTOR_DMS59_DP1:
1225         case DCB_CONNECTOR_DP       :
1226         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1227         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1228         case DCB_CONNECTOR_HDMI_0   :
1229         case DCB_CONNECTOR_HDMI_1   :
1230         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1231         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1232         default:
1233                 break;
1234         }
1235
1236         return DRM_MODE_CONNECTOR_Unknown;
1237 }
1238
1239 struct drm_connector *
1240 nouveau_connector_create(struct drm_device *dev,
1241                          const struct dcb_output *dcbe)
1242 {
1243         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1244         struct nouveau_drm *drm = nouveau_drm(dev);
1245         struct nouveau_display *disp = nouveau_display(dev);
1246         struct nouveau_connector *nv_connector = NULL;
1247         struct drm_connector *connector;
1248         struct drm_connector_list_iter conn_iter;
1249         char aux_name[48] = {0};
1250         int index = dcbe->connector;
1251         int type, ret = 0;
1252         bool dummy;
1253
1254         drm_connector_list_iter_begin(dev, &conn_iter);
1255         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1256                 nv_connector = nouveau_connector(connector);
1257                 if (nv_connector->index == index) {
1258                         drm_connector_list_iter_end(&conn_iter);
1259                         return connector;
1260                 }
1261         }
1262         drm_connector_list_iter_end(&conn_iter);
1263
1264         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1265         if (!nv_connector)
1266                 return ERR_PTR(-ENOMEM);
1267
1268         connector = &nv_connector->base;
1269         nv_connector->index = index;
1270
1271         /* attempt to parse vbios connector type and hotplug gpio */
1272         nv_connector->dcb = olddcb_conn(dev, index);
1273         if (nv_connector->dcb) {
1274                 u32 entry = ROM16(nv_connector->dcb[0]);
1275                 if (olddcb_conntab(dev)[3] >= 4)
1276                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1277
1278                 nv_connector->type = nv_connector->dcb[0];
1279                 if (drm_conntype_from_dcb(nv_connector->type) ==
1280                                           DRM_MODE_CONNECTOR_Unknown) {
1281                         NV_WARN(drm, "unknown connector type %02x\n",
1282                                 nv_connector->type);
1283                         nv_connector->type = DCB_CONNECTOR_NONE;
1284                 }
1285
1286                 /* Gigabyte NX85T */
1287                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1288                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1289                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1290                 }
1291
1292                 /* Gigabyte GV-NX86T512H */
1293                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1294                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1295                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1296                 }
1297         } else {
1298                 nv_connector->type = DCB_CONNECTOR_NONE;
1299         }
1300
1301         /* no vbios data, or an unknown dcb connector type - attempt to
1302          * figure out something suitable ourselves
1303          */
1304         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1305                 struct nouveau_drm *drm = nouveau_drm(dev);
1306                 struct dcb_table *dcbt = &drm->vbios.dcb;
1307                 u32 encoders = 0;
1308                 int i;
1309
1310                 for (i = 0; i < dcbt->entries; i++) {
1311                         if (dcbt->entry[i].connector == nv_connector->index)
1312                                 encoders |= (1 << dcbt->entry[i].type);
1313                 }
1314
1315                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1316                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1317                                 nv_connector->type = DCB_CONNECTOR_DP;
1318                         else
1319                                 nv_connector->type = DCB_CONNECTOR_eDP;
1320                 } else
1321                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1322                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1323                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1324                         else
1325                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1326                 } else
1327                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1328                         nv_connector->type = DCB_CONNECTOR_VGA;
1329                 } else
1330                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1331                         nv_connector->type = DCB_CONNECTOR_LVDS;
1332                 } else
1333                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1334                         nv_connector->type = DCB_CONNECTOR_TV_0;
1335                 }
1336         }
1337
1338         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1339         case DRM_MODE_CONNECTOR_LVDS:
1340                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1341                 if (ret) {
1342                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1343                         kfree(nv_connector);
1344                         return ERR_PTR(ret);
1345                 }
1346
1347                 funcs = &nouveau_connector_funcs_lvds;
1348                 break;
1349         case DRM_MODE_CONNECTOR_DisplayPort:
1350         case DRM_MODE_CONNECTOR_eDP:
1351                 nv_connector->aux.dev = connector->kdev;
1352                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1353                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1354                          dcbe->hasht, dcbe->hashm);
1355                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1356                 ret = drm_dp_aux_register(&nv_connector->aux);
1357                 if (ret) {
1358                         NV_ERROR(drm, "failed to register aux channel\n");
1359                         kfree(nv_connector);
1360                         return ERR_PTR(ret);
1361                 }
1362                 funcs = &nouveau_connector_funcs;
1363                 break;
1364         default:
1365                 funcs = &nouveau_connector_funcs;
1366                 break;
1367         }
1368
1369         /* HDMI 3D support */
1370         if ((disp->disp.object.oclass >= G82_DISP)
1371             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1372                 || (type == DRM_MODE_CONNECTOR_eDP)
1373                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1374                 connector->stereo_allowed = true;
1375
1376         /* defaults, will get overridden in detect() */
1377         connector->interlace_allowed = false;
1378         connector->doublescan_allowed = false;
1379
1380         drm_connector_init(dev, connector, funcs, type);
1381         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1382
1383         connector->funcs->reset(connector);
1384         nouveau_conn_attach_properties(connector);
1385
1386         /* Default scaling mode */
1387         switch (nv_connector->type) {
1388         case DCB_CONNECTOR_LVDS:
1389         case DCB_CONNECTOR_LVDS_SPWG:
1390         case DCB_CONNECTOR_eDP:
1391                 /* see note in nouveau_connector_set_property() */
1392                 if (disp->disp.object.oclass < NV50_DISP) {
1393                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1394                         break;
1395                 }
1396                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1397                 break;
1398         default:
1399                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1400                 break;
1401         }
1402
1403         /* dithering properties */
1404         switch (nv_connector->type) {
1405         case DCB_CONNECTOR_TV_0:
1406         case DCB_CONNECTOR_TV_1:
1407         case DCB_CONNECTOR_TV_3:
1408         case DCB_CONNECTOR_VGA:
1409                 break;
1410         default:
1411                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1412                 break;
1413         }
1414
1415         switch (type) {
1416         case DRM_MODE_CONNECTOR_DisplayPort:
1417         case DRM_MODE_CONNECTOR_eDP:
1418                 drm_dp_cec_register_connector(&nv_connector->aux,
1419                                               connector->name, dev->dev);
1420                 break;
1421         }
1422
1423         ret = nvif_notify_init(&disp->disp.object, nouveau_connector_hotplug,
1424                                true, NV04_DISP_NTFY_CONN,
1425                                &(struct nvif_notify_conn_req_v0) {
1426                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1427                                 .conn = index,
1428                                },
1429                                sizeof(struct nvif_notify_conn_req_v0),
1430                                sizeof(struct nvif_notify_conn_rep_v0),
1431                                &nv_connector->hpd);
1432         if (ret)
1433                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1434         else
1435                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1436
1437         drm_connector_register(connector);
1438         return connector;
1439 }