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                         break;
 161                 case DRM_MODE_SCALE_FULLSCREEN:
 162                 case DRM_MODE_SCALE_CENTER:
 163                 case DRM_MODE_SCALE_ASPECT:
 164                         break;
 165                 default:
 166                         return -EINVAL;
 167                 }
 168
 169                 if (asyc->scaler.mode != val) {
 170                         asyc->scaler.mode = val;
 171                         asyc->set.scaler = true;
 172                 }
 173         } else
 174         if (property == disp->underscan_property) {
 175                 if (asyc->scaler.underscan.mode != val) {
 176                         asyc->scaler.underscan.mode = val;
 177                         asyc->set.scaler = true;
 178                 }
 179         } else
 180         if (property == disp->underscan_hborder_property) {
 181                 if (asyc->scaler.underscan.hborder != val) {
 182                         asyc->scaler.underscan.hborder = val;
 183                         asyc->set.scaler = true;
 184                 }
 185         } else
 186         if (property == disp->underscan_vborder_property) {
 187                 if (asyc->scaler.underscan.vborder != val) {
 188                         asyc->scaler.underscan.vborder = val;
 189                         asyc->set.scaler = true;
 190                 }
 191         } else
 192         if (property == disp->dithering_mode) {
 193                 if (asyc->dither.mode != val) {
 194                         asyc->dither.mode = val;
 195                         asyc->set.dither = true;
 196                 }
 197         } else
 198         if (property == disp->dithering_depth) {
 199                 if (asyc->dither.mode != val) {
 200                         asyc->dither.depth = val;
 201                         asyc->set.dither = true;
 202                 }
 203         } else
 204         if (property == disp->vibrant_hue_property) {
 205                 if (asyc->procamp.vibrant_hue != val) {
 206                         asyc->procamp.vibrant_hue = val;
 207                         asyc->set.procamp = true;
 208                 }
 209         } else
 210         if (property == disp->color_vibrance_property) {
 211                 if (asyc->procamp.color_vibrance != val) {
 212                         asyc->procamp.color_vibrance = val;
 213                         asyc->set.procamp = true;
 214                 }
 215         } else {
 216                 return -EINVAL;
 217         }
 218
 219         return 0;
 220 }
 221
 222 void
 223 nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 224                                   struct drm_connector_state *state)
 225 {
 226         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 227         __drm_atomic_helper_connector_destroy_state(&asyc->state);
 228         kfree(asyc);
 229 }
 230
 231 struct drm_connector_state *
 232 nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 233 {
 234         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 235         struct nouveau_conn_atom *asyc;
 236         if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 237                 return NULL;
 238         __drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 239         asyc->dither = armc->dither;
 240         asyc->scaler = armc->scaler;
 241         asyc->procamp = armc->procamp;
 242         asyc->set.mask = 0;
 243         return &asyc->state;
 244 }
 245
 246 void
 247 nouveau_conn_reset(struct drm_connector *connector)
 248 {
 249         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 250         struct nouveau_conn_atom *asyc;
 251
 252         if (drm_drv_uses_atomic_modeset(connector->dev)) {
 253                 if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 254                         return;
 255
 256                 if (connector->state)
 257                         nouveau_conn_atomic_destroy_state(connector,
 258                                                           connector->state);
 259
 260                 __drm_atomic_helper_connector_reset(connector, &asyc->state);
 261         } else {
 262                 asyc = &nv_connector->properties_state;
 263         }
 264
 265         asyc->dither.mode = DITHERING_MODE_AUTO;
 266         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 267         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 268         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 269         asyc->procamp.color_vibrance = 150;
 270         asyc->procamp.vibrant_hue = 90;
 271
 272         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 273                 switch (connector->connector_type) {
 274                 case DRM_MODE_CONNECTOR_LVDS:
 275                         /* See note in nouveau_conn_atomic_set_property(). */
 276                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 277                         break;
 278                 default:
 279                         break;
 280                 }
 281         }
 282 }
 283
 284 void
 285 nouveau_conn_attach_properties(struct drm_connector *connector)
 286 {
 287         struct drm_device *dev = connector->dev;
 288         struct nouveau_display *disp = nouveau_display(dev);
 289         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 290         struct nouveau_conn_atom *armc;
 291
 292         if (drm_drv_uses_atomic_modeset(connector->dev))
 293                 armc = nouveau_conn_atom(connector->state);
 294         else
 295                 armc = &nv_connector->properties_state;
 296
 297         /* Init DVI-I specific properties. */
 298         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 299                 drm_object_attach_property(&connector->base, dev->mode_config.
 300                                            dvi_i_subconnector_property, 0);
 301
 302         /* Add overscan compensation options to digital outputs. */
 303         if (disp->underscan_property &&
 304             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 305              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 306              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 307              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 308                 drm_object_attach_property(&connector->base,
 309                                            disp->underscan_property,
 310                                            UNDERSCAN_OFF);
 311                 drm_object_attach_property(&connector->base,
 312                                            disp->underscan_hborder_property, 0);
 313                 drm_object_attach_property(&connector->base,
 314                                            disp->underscan_vborder_property, 0);
 315         }
 316
 317         /* Add hue and saturation options. */
 318         if (disp->vibrant_hue_property)
 319                 drm_object_attach_property(&connector->base,
 320                                            disp->vibrant_hue_property,
 321                                            armc->procamp.vibrant_hue);
 322         if (disp->color_vibrance_property)
 323                 drm_object_attach_property(&connector->base,
 324                                            disp->color_vibrance_property,
 325                                            armc->procamp.color_vibrance);
 326
 327         /* Scaling mode property. */
 328         switch (connector->connector_type) {
 329         case DRM_MODE_CONNECTOR_TV:
 330                 break;
 331         case DRM_MODE_CONNECTOR_VGA:
 332                 if (disp->disp.object.oclass < NV50_DISP)
 333                         break; /* Can only scale on DFPs. */
 334                 fallthrough;
 335         default:
 336                 drm_object_attach_property(&connector->base, dev->mode_config.
 337                                            scaling_mode_property,
 338                                            armc->scaler.mode);
 339                 break;
 340         }
 341
 342         /* Dithering properties. */
 343         switch (connector->connector_type) {
 344         case DRM_MODE_CONNECTOR_TV:
 345         case DRM_MODE_CONNECTOR_VGA:
 346                 break;
 347         default:
 348                 if (disp->dithering_mode) {
 349                         drm_object_attach_property(&connector->base,
 350                                                    disp->dithering_mode,
 351                                                    armc->dither.mode);
 352                 }
 353                 if (disp->dithering_depth) {
 354                         drm_object_attach_property(&connector->base,
 355                                                    disp->dithering_depth,
 356                                                    armc->dither.depth);
 357                 }
 358                 break;
 359         }
 360 }
 361
 362 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 363 int nouveau_tv_disable = 0;
 364 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 365
 366 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 367 int nouveau_ignorelid = 0;
 368 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 369
 370 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 371 int nouveau_duallink = 1;
 372 module_param_named(duallink, nouveau_duallink, int, 0400);
 373
 374 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 375 int nouveau_hdmimhz = 0;
 376 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 377
 378 struct nouveau_encoder *
 379 find_encoder(struct drm_connector *connector, int type)
 380 {
 381         struct nouveau_encoder *nv_encoder;
 382         struct drm_encoder *enc;
 383
 384         drm_connector_for_each_possible_encoder(connector, enc) {
 385                 nv_encoder = nouveau_encoder(enc);
 386
 387                 if (type == DCB_OUTPUT_ANY ||
 388                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
 389                         return nv_encoder;
 390         }
 391
 392         return NULL;
 393 }
 394
 395 static void
 396 nouveau_connector_destroy(struct drm_connector *connector)
 397 {
 398         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 399         nvif_notify_dtor(&nv_connector->hpd);
 400         kfree(nv_connector->edid);
 401         drm_connector_unregister(connector);
 402         drm_connector_cleanup(connector);
 403         if (nv_connector->aux.transfer) {
 404                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 405                 kfree(nv_connector->aux.name);
 406         }
 407         nvif_conn_dtor(&nv_connector->conn);
 408         kfree(connector);
 409 }
 410
 411 static struct nouveau_encoder *
 412 nouveau_connector_ddc_detect(struct drm_connector *connector)
 413 {
 414         struct drm_device *dev = connector->dev;
 415         struct pci_dev *pdev = to_pci_dev(dev->dev);
 416         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 417         struct drm_encoder *encoder;
 418         int ret;
 419         bool switcheroo_ddc = false;
 420
 421         drm_connector_for_each_possible_encoder(connector, encoder) {
 422                 nv_encoder = nouveau_encoder(encoder);
 423
 424                 switch (nv_encoder->dcb->type) {
 425                 case DCB_OUTPUT_DP:
 426                         ret = nouveau_dp_detect(nouveau_connector(connector),
 427                                                 nv_encoder);
 428                         if (ret == NOUVEAU_DP_MST)
 429                                 return NULL;
 430                         else if (ret == NOUVEAU_DP_SST)
 431                                 found = nv_encoder;
 432
 433                         break;
 434                 case DCB_OUTPUT_LVDS:
 435                         switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 436                                             VGA_SWITCHEROO_CAN_SWITCH_DDC);
 437                         fallthrough;
 438                 default:
 439                         if (!nv_encoder->i2c)
 440                                 break;
 441
 442                         if (switcheroo_ddc)
 443                                 vga_switcheroo_lock_ddc(pdev);
 444                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 445                                 found = nv_encoder;
 446                         if (switcheroo_ddc)
 447                                 vga_switcheroo_unlock_ddc(pdev);
 448
 449                         break;
 450                 }
 451                 if (found)
 452                         break;
 453         }
 454
 455         return found;
 456 }
 457
 458 static struct nouveau_encoder *
 459 nouveau_connector_of_detect(struct drm_connector *connector)
 460 {
 461 #ifdef __powerpc__
 462         struct drm_device *dev = connector->dev;
 463         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 464         struct nouveau_encoder *nv_encoder;
 465         struct pci_dev *pdev = to_pci_dev(dev->dev);
 466         struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
 467
 468         if (!dn ||
 469             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 470               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 471                 return NULL;
 472
 473         for_each_child_of_node(dn, cn) {
 474                 const char *name = of_get_property(cn, "name", NULL);
 475                 const void *edid = of_get_property(cn, "EDID", NULL);
 476                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 477
 478                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 479                         nv_connector->edid =
 480                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 481                         of_node_put(cn);
 482                         return nv_encoder;
 483                 }
 484         }
 485 #endif
 486         return NULL;
 487 }
 488
 489 static void
 490 nouveau_connector_set_encoder(struct drm_connector *connector,
 491                               struct nouveau_encoder *nv_encoder)
 492 {
 493         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 494         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 495         struct drm_device *dev = connector->dev;
 496         struct pci_dev *pdev = to_pci_dev(dev->dev);
 497
 498         if (nv_connector->detected_encoder == nv_encoder)
 499                 return;
 500         nv_connector->detected_encoder = nv_encoder;
 501
 502         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 503                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 504                         connector->interlace_allowed =
 505                                 nv_encoder->caps.dp_interlace;
 506                 else
 507                         connector->interlace_allowed = true;
 508                 connector->doublescan_allowed = true;
 509         } else
 510         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 511             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 512                 connector->doublescan_allowed = false;
 513                 connector->interlace_allowed = false;
 514         } else {
 515                 connector->doublescan_allowed = true;
 516                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 517                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 518                      (pdev->device & 0x0ff0) != 0x0100 &&
 519                      (pdev->device & 0x0ff0) != 0x0150))
 520                         /* HW is broken */
 521                         connector->interlace_allowed = false;
 522                 else
 523                         connector->interlace_allowed = true;
 524         }
 525
 526         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 527                 drm_object_property_set_value(&connector->base,
 528                         dev->mode_config.dvi_i_subconnector_property,
 529                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 530                         DRM_MODE_SUBCONNECTOR_DVID :
 531                         DRM_MODE_SUBCONNECTOR_DVIA);
 532         }
 533 }
 534
 535 static void
 536 nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
 537                            struct edid *edid)
 538 {
 539         if (nv_connector->edid != edid) {
 540                 struct edid *old_edid = nv_connector->edid;
 541
 542                 drm_connector_update_edid_property(&nv_connector->base, edid);
 543                 kfree(old_edid);
 544                 nv_connector->edid = edid;
 545         }
 546 }
 547
 548 static enum drm_connector_status
 549 nouveau_connector_detect(struct drm_connector *connector, bool force)
 550 {
 551         struct drm_device *dev = connector->dev;
 552         struct nouveau_drm *drm = nouveau_drm(dev);
 553         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 554         struct nouveau_encoder *nv_encoder = NULL;
 555         struct nouveau_encoder *nv_partner;
 556         struct i2c_adapter *i2c;
 557         int type;
 558         int ret;
 559         enum drm_connector_status conn_status = connector_status_disconnected;
 560
 561         /* Outputs are only polled while runtime active, so resuming the
 562          * device here is unnecessary (and would deadlock upon runtime suspend
 563          * because it waits for polling to finish). We do however, want to
 564          * prevent the autosuspend timer from elapsing during this operation
 565          * if possible.
 566          */
 567         if (drm_kms_helper_is_poll_worker()) {
 568                 pm_runtime_get_noresume(dev->dev);
 569         } else {
 570                 ret = pm_runtime_get_sync(dev->dev);
 571                 if (ret < 0 && ret != -EACCES) {
 572                         pm_runtime_put_autosuspend(dev->dev);
 573                         nouveau_connector_set_edid(nv_connector, NULL);
 574                         return conn_status;
 575                 }
 576         }
 577
 578         nv_encoder = nouveau_connector_ddc_detect(connector);
 579         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 580                 struct edid *new_edid;
 581
 582                 if ((vga_switcheroo_handler_flags() &
 583                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 584                     nv_connector->type == DCB_CONNECTOR_LVDS)
 585                         new_edid = drm_get_edid_switcheroo(connector, i2c);
 586                 else
 587                         new_edid = drm_get_edid(connector, i2c);
 588
 589                 nouveau_connector_set_edid(nv_connector, new_edid);
 590                 if (!nv_connector->edid) {
 591                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 592                                  connector->name);
 593                         goto detect_analog;
 594                 }
 595
 596                 /* Override encoder type for DVI-I based on whether EDID
 597                  * says the display is digital or analog, both use the
 598                  * same i2c channel so the value returned from ddc_detect
 599                  * isn't necessarily correct.
 600                  */
 601                 nv_partner = NULL;
 602                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 603                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 604                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 605                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 606
 607                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 608                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 609                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 610                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 611                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 612                                 type = DCB_OUTPUT_TMDS;
 613                         else
 614                                 type = DCB_OUTPUT_ANALOG;
 615
 616                         nv_encoder = find_encoder(connector, type);
 617                 }
 618
 619                 nouveau_connector_set_encoder(connector, nv_encoder);
 620                 conn_status = connector_status_connected;
 621                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 622                 goto out;
 623         } else {
 624                 nouveau_connector_set_edid(nv_connector, NULL);
 625         }
 626
 627         nv_encoder = nouveau_connector_of_detect(connector);
 628         if (nv_encoder) {
 629                 nouveau_connector_set_encoder(connector, nv_encoder);
 630                 conn_status = connector_status_connected;
 631                 goto out;
 632         }
 633
 634 detect_analog:
 635         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 636         if (!nv_encoder && !nouveau_tv_disable)
 637                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 638         if (nv_encoder && force) {
 639                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 640                 const struct drm_encoder_helper_funcs *helper =
 641                                                 encoder->helper_private;
 642
 643                 if (helper->detect(encoder, connector) ==
 644                                                 connector_status_connected) {
 645                         nouveau_connector_set_encoder(connector, nv_encoder);
 646                         conn_status = connector_status_connected;
 647                         goto out;
 648                 }
 649         }
 650
 651  out:
 652         if (!nv_connector->edid)
 653                 drm_dp_cec_unset_edid(&nv_connector->aux);
 654
 655         pm_runtime_mark_last_busy(dev->dev);
 656         pm_runtime_put_autosuspend(dev->dev);
 657
 658         return conn_status;
 659 }
 660
 661 static enum drm_connector_status
 662 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 663 {
 664         struct drm_device *dev = connector->dev;
 665         struct nouveau_drm *drm = nouveau_drm(dev);
 666         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 667         struct nouveau_encoder *nv_encoder = NULL;
 668         struct edid *edid = NULL;
 669         enum drm_connector_status status = connector_status_disconnected;
 670
 671         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 672         if (!nv_encoder)
 673                 goto out;
 674
 675         /* Try retrieving EDID via DDC */
 676         if (!drm->vbios.fp_no_ddc) {
 677                 status = nouveau_connector_detect(connector, force);
 678                 if (status == connector_status_connected) {
 679                         edid = nv_connector->edid;
 680                         goto out;
 681                 }
 682         }
 683
 684         /* On some laptops (Sony, i'm looking at you) there appears to
 685          * be no direct way of accessing the panel's EDID.  The only
 686          * option available to us appears to be to ask ACPI for help..
 687          *
 688          * It's important this check's before trying straps, one of the
 689          * said manufacturer's laptops are configured in such a way
 690          * the nouveau decides an entry in the VBIOS FP mode table is
 691          * valid - it's not (rh#613284)
 692          */
 693         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 694                 edid = nouveau_acpi_edid(dev, connector);
 695                 if (edid) {
 696                         status = connector_status_connected;
 697                         goto out;
 698                 }
 699         }
 700
 701         /* If no EDID found above, and the VBIOS indicates a hardcoded
 702          * modeline is avalilable for the panel, set it as the panel's
 703          * native mode and exit.
 704          */
 705         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 706             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 707                 status = connector_status_connected;
 708                 goto out;
 709         }
 710
 711         /* Still nothing, some VBIOS images have a hardcoded EDID block
 712          * stored for the panel stored in them.
 713          */
 714         if (!drm->vbios.fp_no_ddc) {
 715                 edid = (struct edid *)nouveau_bios_embedded_edid(dev);
 716                 if (edid) {
 717                         edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 718                         if (edid)
 719                                 status = connector_status_connected;
 720                 }
 721         }
 722
 723 out:
 724 #if defined(CONFIG_ACPI_BUTTON) || \
 725         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 726         if (status == connector_status_connected &&
 727             !nouveau_ignorelid && !acpi_lid_open())
 728                 status = connector_status_unknown;
 729 #endif
 730
 731         nouveau_connector_set_edid(nv_connector, edid);
 732         nouveau_connector_set_encoder(connector, nv_encoder);
 733         return status;
 734 }
 735
 736 static void
 737 nouveau_connector_force(struct drm_connector *connector)
 738 {
 739         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 740         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 741         struct nouveau_encoder *nv_encoder;
 742         int type;
 743
 744         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 745                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 746                         type = DCB_OUTPUT_TMDS;
 747                 else
 748                         type = DCB_OUTPUT_ANALOG;
 749         } else
 750                 type = DCB_OUTPUT_ANY;
 751
 752         nv_encoder = find_encoder(connector, type);
 753         if (!nv_encoder) {
 754                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 755                          connector->name);
 756                 connector->status = connector_status_disconnected;
 757                 return;
 758         }
 759
 760         nouveau_connector_set_encoder(connector, nv_encoder);
 761 }
 762
 763 static int
 764 nouveau_connector_set_property(struct drm_connector *connector,
 765                                struct drm_property *property, uint64_t value)
 766 {
 767         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 768         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 769         struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
 770         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 771         int ret;
 772
 773         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 774                                                     &asyc->state,
 775                                                     property, value);
 776         if (ret) {
 777                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 778                         return get_slave_funcs(encoder)->set_property(
 779                                 encoder, connector, property, value);
 780                 return ret;
 781         }
 782
 783         nv_connector->scaling_mode = asyc->scaler.mode;
 784         nv_connector->dithering_mode = asyc->dither.mode;
 785
 786         if (connector->encoder && connector->encoder->crtc) {
 787                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 788                                               &connector->encoder->crtc->mode,
 789                                                connector->encoder->crtc->x,
 790                                                connector->encoder->crtc->y,
 791                                                NULL);
 792                 if (!ret)
 793                         return -EINVAL;
 794         }
 795
 796         return 0;
 797 }
 798
 799 struct moderec {
 800         int hdisplay;
 801         int vdisplay;
 802 };
 803
 804 static struct moderec scaler_modes[] = {
 805         { 1920, 1200 },
 806         { 1920, 1080 },
 807         { 1680, 1050 },
 808         { 1600, 1200 },
 809         { 1400, 1050 },
 810         { 1280, 1024 },
 811         { 1280, 960 },
 812         { 1152, 864 },
 813         { 1024, 768 },
 814         { 800, 600 },
 815         { 720, 400 },
 816         { 640, 480 },
 817         { 640, 400 },
 818         { 640, 350 },
 819         {}
 820 };
 821
 822 static int
 823 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 824 {
 825         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 826         struct drm_display_mode *native = nv_connector->native_mode, *m;
 827         struct drm_device *dev = connector->dev;
 828         struct moderec *mode = &scaler_modes[0];
 829         int modes = 0;
 830
 831         if (!native)
 832                 return 0;
 833
 834         while (mode->hdisplay) {
 835                 if (mode->hdisplay <= native->hdisplay &&
 836                     mode->vdisplay <= native->vdisplay &&
 837                     (mode->hdisplay != native->hdisplay ||
 838                      mode->vdisplay != native->vdisplay)) {
 839                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 840                                          drm_mode_vrefresh(native), false,
 841                                          false, false);
 842                         if (!m)
 843                                 continue;
 844
 845                         drm_mode_probed_add(connector, m);
 846                         modes++;
 847                 }
 848
 849                 mode++;
 850         }
 851
 852         return modes;
 853 }
 854
 855 static void
 856 nouveau_connector_detect_depth(struct drm_connector *connector)
 857 {
 858         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 859         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 860         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 861         struct nvbios *bios = &drm->vbios;
 862         struct drm_display_mode *mode = nv_connector->native_mode;
 863         bool duallink;
 864
 865         /* if the edid is feeling nice enough to provide this info, use it */
 866         if (nv_connector->edid && connector->display_info.bpc)
 867                 return;
 868
 869         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 870         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 871                 connector->display_info.bpc = 6;
 872                 return;
 873         }
 874
 875         /* we're out of options unless we're LVDS, default to 8bpc */
 876         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 877                 connector->display_info.bpc = 8;
 878                 return;
 879         }
 880
 881         connector->display_info.bpc = 6;
 882
 883         /* LVDS: panel straps */
 884         if (bios->fp_no_ddc) {
 885                 if (bios->fp.if_is_24bit)
 886                         connector->display_info.bpc = 8;
 887                 return;
 888         }
 889
 890         /* LVDS: DDC panel, need to first determine the number of links to
 891          * know which if_is_24bit flag to check...
 892          */
 893         if (nv_connector->edid &&
 894             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 895                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 896         else
 897                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 898
 899         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 900             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 901                 connector->display_info.bpc = 8;
 902 }
 903
 904 static int
 905 nouveau_connector_late_register(struct drm_connector *connector)
 906 {
 907         int ret;
 908
 909         ret = nouveau_backlight_init(connector);
 910         if (ret)
 911                 return ret;
 912
 913         if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 914             connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
 915                 ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
 916                 if (ret)
 917                         goto backlight_fini;
 918         }
 919
 920         return 0;
 921 backlight_fini:
 922         nouveau_backlight_fini(connector);
 923         return ret;
 924 }
 925
 926 static void
 927 nouveau_connector_early_unregister(struct drm_connector *connector)
 928 {
 929         if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 930             connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
 931                 drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
 932
 933         nouveau_backlight_fini(connector);
 934 }
 935
 936 static int
 937 nouveau_connector_get_modes(struct drm_connector *connector)
 938 {
 939         struct drm_device *dev = connector->dev;
 940         struct nouveau_drm *drm = nouveau_drm(dev);
 941         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 942         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 943         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 944         int ret = 0;
 945
 946         /* destroy the native mode, the attached monitor could have changed.
 947          */
 948         if (nv_connector->native_mode) {
 949                 drm_mode_destroy(dev, nv_connector->native_mode);
 950                 nv_connector->native_mode = NULL;
 951         }
 952
 953         if (nv_connector->edid)
 954                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 955         else
 956         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 957             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 958              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 959                 struct drm_display_mode mode;
 960
 961                 nouveau_bios_fp_mode(dev, &mode);
 962                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 963         }
 964
 965         /* Determine display colour depth for everything except LVDS now,
 966          * DP requires this before mode_valid() is called.
 967          */
 968         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 969                 nouveau_connector_detect_depth(connector);
 970
 971         /* Find the native mode if this is a digital panel, if we didn't
 972          * find any modes through DDC previously add the native mode to
 973          * the list of modes.
 974          */
 975         if (!nv_connector->native_mode)
 976                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 977         if (ret == 0 && nv_connector->native_mode) {
 978                 struct drm_display_mode *mode;
 979
 980                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 981                 drm_mode_probed_add(connector, mode);
 982                 ret = 1;
 983         }
 984
 985         /* Determine LVDS colour depth, must happen after determining
 986          * "native" mode as some VBIOS tables require us to use the
 987          * pixel clock as part of the lookup...
 988          */
 989         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 990                 nouveau_connector_detect_depth(connector);
 991
 992         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 993                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 994
 995         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 996             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 997             nv_connector->type == DCB_CONNECTOR_eDP)
 998                 ret += nouveau_connector_scaler_modes_add(connector);
 999
1000         return ret;
1001 }
1002
1003 static unsigned
1004 get_tmds_link_bandwidth(struct drm_connector *connector)
1005 {
1006         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1007         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1008         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1009         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1010         struct drm_display_info *info = NULL;
1011         unsigned duallink_scale =
1012                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1013
1014         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1015                 info = &nv_connector->base.display_info;
1016                 duallink_scale = 1;
1017         }
1018
1019         if (info) {
1020                 if (nouveau_hdmimhz > 0)
1021                         return nouveau_hdmimhz * 1000;
1022                 /* Note: these limits are conservative, some Fermi's
1023                  * can do 297 MHz. Unclear how this can be determined.
1024                  */
1025                 if (drm->client.device.info.chipset >= 0x120) {
1026                         const int max_tmds_clock =
1027                                 info->hdmi.scdc.scrambling.supported ?
1028                                 594000 : 340000;
1029                         return info->max_tmds_clock ?
1030                                 min(info->max_tmds_clock, max_tmds_clock) :
1031                                 max_tmds_clock;
1032                 }
1033                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1034                         return 297000;
1035                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1036                         return 225000;
1037         }
1038
1039         if (dcb->location != DCB_LOC_ON_CHIP ||
1040             drm->client.device.info.chipset >= 0x46)
1041                 return 165000 * duallink_scale;
1042         else if (drm->client.device.info.chipset >= 0x40)
1043                 return 155000 * duallink_scale;
1044         else if (drm->client.device.info.chipset >= 0x18)
1045                 return 135000 * duallink_scale;
1046         else
1047                 return 112000 * duallink_scale;
1048 }
1049
1050 static enum drm_mode_status
1051 nouveau_connector_mode_valid(struct drm_connector *connector,
1052                              struct drm_display_mode *mode)
1053 {
1054         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1055         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1056         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1057         unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1058
1059         switch (nv_encoder->dcb->type) {
1060         case DCB_OUTPUT_LVDS:
1061                 if (nv_connector->native_mode &&
1062                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1063                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1064                         return MODE_PANEL;
1065
1066                 min_clock = 0;
1067                 max_clock = 400000;
1068                 break;
1069         case DCB_OUTPUT_TMDS:
1070                 max_clock = get_tmds_link_bandwidth(connector);
1071                 break;
1072         case DCB_OUTPUT_ANALOG:
1073                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1074                 if (!max_clock)
1075                         max_clock = 350000;
1076                 break;
1077         case DCB_OUTPUT_TV:
1078                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1079         case DCB_OUTPUT_DP:
1080                 return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1081         default:
1082                 BUG();
1083                 return MODE_BAD;
1084         }
1085
1086         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1087                 clock *= 2;
1088
1089         if (clock < min_clock)
1090                 return MODE_CLOCK_LOW;
1091         if (clock > max_clock)
1092                 return MODE_CLOCK_HIGH;
1093
1094         return MODE_OK;
1095 }
1096
1097 static struct drm_encoder *
1098 nouveau_connector_best_encoder(struct drm_connector *connector)
1099 {
1100         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1101
1102         if (nv_connector->detected_encoder)
1103                 return to_drm_encoder(nv_connector->detected_encoder);
1104
1105         return NULL;
1106 }
1107
1108 static const struct drm_connector_helper_funcs
1109 nouveau_connector_helper_funcs = {
1110         .get_modes = nouveau_connector_get_modes,
1111         .mode_valid = nouveau_connector_mode_valid,
1112         .best_encoder = nouveau_connector_best_encoder,
1113 };
1114
1115 static const struct drm_connector_funcs
1116 nouveau_connector_funcs = {
1117         .dpms = drm_helper_connector_dpms,
1118         .reset = nouveau_conn_reset,
1119         .detect = nouveau_connector_detect,
1120         .force = nouveau_connector_force,
1121         .fill_modes = drm_helper_probe_single_connector_modes,
1122         .set_property = nouveau_connector_set_property,
1123         .destroy = nouveau_connector_destroy,
1124         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1125         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1126         .atomic_set_property = nouveau_conn_atomic_set_property,
1127         .atomic_get_property = nouveau_conn_atomic_get_property,
1128         .late_register = nouveau_connector_late_register,
1129         .early_unregister = nouveau_connector_early_unregister,
1130 };
1131
1132 static const struct drm_connector_funcs
1133 nouveau_connector_funcs_lvds = {
1134         .dpms = drm_helper_connector_dpms,
1135         .reset = nouveau_conn_reset,
1136         .detect = nouveau_connector_detect_lvds,
1137         .force = nouveau_connector_force,
1138         .fill_modes = drm_helper_probe_single_connector_modes,
1139         .set_property = nouveau_connector_set_property,
1140         .destroy = nouveau_connector_destroy,
1141         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1142         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1143         .atomic_set_property = nouveau_conn_atomic_set_property,
1144         .atomic_get_property = nouveau_conn_atomic_get_property,
1145         .late_register = nouveau_connector_late_register,
1146         .early_unregister = nouveau_connector_early_unregister,
1147 };
1148
1149 void
1150 nouveau_connector_hpd(struct drm_connector *connector)
1151 {
1152         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1153         u32 mask = drm_connector_mask(connector);
1154
1155         mutex_lock(&drm->hpd_lock);
1156         if (!(drm->hpd_pending & mask)) {
1157                 drm->hpd_pending |= mask;
1158                 schedule_work(&drm->hpd_work);
1159         }
1160         mutex_unlock(&drm->hpd_lock);
1161 }
1162
1163 static int
1164 nouveau_connector_hotplug(struct nvif_notify *notify)
1165 {
1166         struct nouveau_connector *nv_connector =
1167                 container_of(notify, typeof(*nv_connector), hpd);
1168         struct drm_connector *connector = &nv_connector->base;
1169         struct drm_device *dev = connector->dev;
1170         struct nouveau_drm *drm = nouveau_drm(dev);
1171         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1172         bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1173
1174         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1175                 nouveau_dp_irq(drm, nv_connector);
1176                 return NVIF_NOTIFY_KEEP;
1177         }
1178
1179         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1180         nouveau_connector_hpd(connector);
1181
1182         return NVIF_NOTIFY_KEEP;
1183 }
1184
1185 static ssize_t
1186 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1187 {
1188         struct nouveau_connector *nv_connector =
1189                 container_of(obj, typeof(*nv_connector), aux);
1190         struct nouveau_encoder *nv_encoder;
1191         struct nvkm_i2c_aux *aux;
1192         u8 size = msg->size;
1193         int ret;
1194
1195         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1196         if (!nv_encoder || !(aux = nv_encoder->aux))
1197                 return -ENODEV;
1198         if (WARN_ON(msg->size > 16))
1199                 return -E2BIG;
1200
1201         ret = nvkm_i2c_aux_acquire(aux);
1202         if (ret)
1203                 return ret;
1204
1205         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1206                                 msg->buffer, &size);
1207         nvkm_i2c_aux_release(aux);
1208         if (ret >= 0) {
1209                 msg->reply = ret;
1210                 return size;
1211         }
1212
1213         return ret;
1214 }
1215
1216 static int
1217 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1218 {
1219         switch (dcb) {
1220         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1221         case DCB_CONNECTOR_TV_0     :
1222         case DCB_CONNECTOR_TV_1     :
1223         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1224         case DCB_CONNECTOR_DMS59_0  :
1225         case DCB_CONNECTOR_DMS59_1  :
1226         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1227         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1228         case DCB_CONNECTOR_LVDS     :
1229         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1230         case DCB_CONNECTOR_DMS59_DP0:
1231         case DCB_CONNECTOR_DMS59_DP1:
1232         case DCB_CONNECTOR_DP       :
1233         case DCB_CONNECTOR_mDP      :
1234         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1235         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1236         case DCB_CONNECTOR_HDMI_0   :
1237         case DCB_CONNECTOR_HDMI_1   :
1238         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1239         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1240         default:
1241                 break;
1242         }
1243
1244         return DRM_MODE_CONNECTOR_Unknown;
1245 }
1246
1247 struct drm_connector *
1248 nouveau_connector_create(struct drm_device *dev,
1249                          const struct dcb_output *dcbe)
1250 {
1251         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1252         struct nouveau_drm *drm = nouveau_drm(dev);
1253         struct nouveau_display *disp = nouveau_display(dev);
1254         struct nouveau_connector *nv_connector = NULL;
1255         struct drm_connector *connector;
1256         struct drm_connector_list_iter conn_iter;
1257         char aux_name[48] = {0};
1258         int index = dcbe->connector;
1259         int type, ret = 0;
1260         bool dummy;
1261
1262         drm_connector_list_iter_begin(dev, &conn_iter);
1263         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1264                 nv_connector = nouveau_connector(connector);
1265                 if (nv_connector->index == index) {
1266                         drm_connector_list_iter_end(&conn_iter);
1267                         return connector;
1268                 }
1269         }
1270         drm_connector_list_iter_end(&conn_iter);
1271
1272         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1273         if (!nv_connector)
1274                 return ERR_PTR(-ENOMEM);
1275
1276         connector = &nv_connector->base;
1277         nv_connector->index = index;
1278
1279         /* attempt to parse vbios connector type and hotplug gpio */
1280         nv_connector->dcb = olddcb_conn(dev, index);
1281         if (nv_connector->dcb) {
1282                 u32 entry = ROM16(nv_connector->dcb[0]);
1283                 if (olddcb_conntab(dev)[3] >= 4)
1284                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1285
1286                 nv_connector->type = nv_connector->dcb[0];
1287                 if (drm_conntype_from_dcb(nv_connector->type) ==
1288                                           DRM_MODE_CONNECTOR_Unknown) {
1289                         NV_WARN(drm, "unknown connector type %02x\n",
1290                                 nv_connector->type);
1291                         nv_connector->type = DCB_CONNECTOR_NONE;
1292                 }
1293
1294                 /* Gigabyte NX85T */
1295                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1296                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1297                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1298                 }
1299
1300                 /* Gigabyte GV-NX86T512H */
1301                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1302                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1303                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1304                 }
1305         } else {
1306                 nv_connector->type = DCB_CONNECTOR_NONE;
1307         }
1308
1309         /* no vbios data, or an unknown dcb connector type - attempt to
1310          * figure out something suitable ourselves
1311          */
1312         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1313                 struct nouveau_drm *drm = nouveau_drm(dev);
1314                 struct dcb_table *dcbt = &drm->vbios.dcb;
1315                 u32 encoders = 0;
1316                 int i;
1317
1318                 for (i = 0; i < dcbt->entries; i++) {
1319                         if (dcbt->entry[i].connector == nv_connector->index)
1320                                 encoders |= (1 << dcbt->entry[i].type);
1321                 }
1322
1323                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1324                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1325                                 nv_connector->type = DCB_CONNECTOR_DP;
1326                         else
1327                                 nv_connector->type = DCB_CONNECTOR_eDP;
1328                 } else
1329                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1330                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1331                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1332                         else
1333                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1334                 } else
1335                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1336                         nv_connector->type = DCB_CONNECTOR_VGA;
1337                 } else
1338                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1339                         nv_connector->type = DCB_CONNECTOR_LVDS;
1340                 } else
1341                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1342                         nv_connector->type = DCB_CONNECTOR_TV_0;
1343                 }
1344         }
1345
1346         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1347         case DRM_MODE_CONNECTOR_LVDS:
1348                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1349                 if (ret) {
1350                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1351                         kfree(nv_connector);
1352                         return ERR_PTR(ret);
1353                 }
1354
1355                 funcs = &nouveau_connector_funcs_lvds;
1356                 break;
1357         case DRM_MODE_CONNECTOR_DisplayPort:
1358         case DRM_MODE_CONNECTOR_eDP:
1359                 nv_connector->aux.dev = connector->kdev;
1360                 nv_connector->aux.drm_dev = dev;
1361                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1362                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1363                          dcbe->hasht, dcbe->hashm);
1364                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1365                 if (!nv_connector->aux.name) {
1366                         kfree(nv_connector);
1367                         return ERR_PTR(-ENOMEM);
1368                 }
1369                 drm_dp_aux_init(&nv_connector->aux);
1370                 fallthrough;
1371         default:
1372                 funcs = &nouveau_connector_funcs;
1373                 break;
1374         }
1375
1376         /* HDMI 3D support */
1377         if ((disp->disp.object.oclass >= G82_DISP)
1378             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1379                 || (type == DRM_MODE_CONNECTOR_eDP)
1380                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1381                 connector->stereo_allowed = true;
1382
1383         /* defaults, will get overridden in detect() */
1384         connector->interlace_allowed = false;
1385         connector->doublescan_allowed = false;
1386
1387         drm_connector_init(dev, connector, funcs, type);
1388         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1389
1390         if (nv_connector->dcb && (disp->disp.conn_mask & BIT(nv_connector->index))) {
1391                 ret = nvif_conn_ctor(&disp->disp, nv_connector->base.name, nv_connector->index,
1392                                      &nv_connector->conn);
1393                 if (ret) {
1394                         kfree(nv_connector);
1395                         return ERR_PTR(ret);
1396                 }
1397         }
1398
1399         connector->funcs->reset(connector);
1400         nouveau_conn_attach_properties(connector);
1401
1402         /* Default scaling mode */
1403         switch (nv_connector->type) {
1404         case DCB_CONNECTOR_LVDS:
1405         case DCB_CONNECTOR_LVDS_SPWG:
1406         case DCB_CONNECTOR_eDP:
1407                 /* see note in nouveau_connector_set_property() */
1408                 if (disp->disp.object.oclass < NV50_DISP) {
1409                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1410                         break;
1411                 }
1412                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1413                 break;
1414         default:
1415                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1416                 break;
1417         }
1418
1419         /* dithering properties */
1420         switch (nv_connector->type) {
1421         case DCB_CONNECTOR_TV_0:
1422         case DCB_CONNECTOR_TV_1:
1423         case DCB_CONNECTOR_TV_3:
1424         case DCB_CONNECTOR_VGA:
1425                 break;
1426         default:
1427                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1428                 break;
1429         }
1430
1431         switch (type) {
1432         case DRM_MODE_CONNECTOR_DisplayPort:
1433         case DRM_MODE_CONNECTOR_eDP:
1434                 drm_dp_cec_register_connector(&nv_connector->aux, connector);
1435                 break;
1436         }
1437
1438         ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1439                                nouveau_connector_hotplug,
1440                                true, NV04_DISP_NTFY_CONN,
1441                                &(struct nvif_notify_conn_req_v0) {
1442                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1443                                 .conn = index,
1444                                },
1445                                sizeof(struct nvif_notify_conn_req_v0),
1446                                sizeof(struct nvif_notify_conn_rep_v0),
1447                                &nv_connector->hpd);
1448         if (ret)
1449                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1450         else
1451                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1452
1453         drm_connector_register(connector);
1454         return connector;
1455 }