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/drmP.h>
  33 #include <drm/drm_atomic_helper.h>
  34 #include <drm/drm_edid.h>
  35 #include <drm/drm_crtc_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.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                 __drm_atomic_helper_connector_destroy_state(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.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.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 drm_device *dev = connector->dev;
 367         struct nouveau_encoder *nv_encoder;
 368         struct drm_encoder *enc;
 369         int i, id;
 370
 371         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 372                 id = connector->encoder_ids[i];
 373                 if (!id)
 374                         break;
 375
 376                 enc = drm_encoder_find(dev, id);
 377                 if (!enc)
 378                         continue;
 379                 nv_encoder = nouveau_encoder(enc);
 380
 381                 if (type == DCB_OUTPUT_ANY ||
 382                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
 383                         return nv_encoder;
 384         }
 385
 386         return NULL;
 387 }
 388
 389 struct nouveau_connector *
 390 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
 391 {
 392         struct drm_device *dev = to_drm_encoder(encoder)->dev;
 393         struct drm_connector *drm_connector;
 394
 395         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 396                 if (drm_connector->encoder == to_drm_encoder(encoder))
 397                         return nouveau_connector(drm_connector);
 398         }
 399
 400         return NULL;
 401 }
 402
 403 static void
 404 nouveau_connector_destroy(struct drm_connector *connector)
 405 {
 406         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 407         nvif_notify_fini(&nv_connector->hpd);
 408         kfree(nv_connector->edid);
 409         drm_connector_unregister(connector);
 410         drm_connector_cleanup(connector);
 411         if (nv_connector->aux.transfer)
 412                 drm_dp_aux_unregister(&nv_connector->aux);
 413         kfree(connector);
 414 }
 415
 416 static struct nouveau_encoder *
 417 nouveau_connector_ddc_detect(struct drm_connector *connector)
 418 {
 419         struct drm_device *dev = connector->dev;
 420         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 421         struct nouveau_drm *drm = nouveau_drm(dev);
 422         struct nvkm_gpio *gpio = nvxx_gpio(&drm->client.device);
 423         struct nouveau_encoder *nv_encoder;
 424         struct drm_encoder *encoder;
 425         int i, panel = -ENODEV;
 426
 427         /* eDP panels need powering on by us (if the VBIOS doesn't default it
 428          * to on) before doing any AUX channel transactions.  LVDS panel power
 429          * is handled by the SOR itself, and not required for LVDS DDC.
 430          */
 431         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 432                 panel = nvkm_gpio_get(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff);
 433                 if (panel == 0) {
 434                         nvkm_gpio_set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, 1);
 435                         msleep(300);
 436                 }
 437         }
 438
 439         for (i = 0; nv_encoder = NULL, i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 440                 int id = connector->encoder_ids[i];
 441                 if (id == 0)
 442                         break;
 443
 444                 encoder = drm_encoder_find(dev, id);
 445                 if (!encoder)
 446                         continue;
 447                 nv_encoder = nouveau_encoder(encoder);
 448
 449                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP) {
 450                         int ret = nouveau_dp_detect(nv_encoder);
 451                         if (ret == NOUVEAU_DP_MST)
 452                                 return NULL;
 453                         if (ret == NOUVEAU_DP_SST)
 454                                 break;
 455                 } else
 456                 if ((vga_switcheroo_handler_flags() &
 457                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 458                     nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 459                     nv_encoder->i2c) {
 460                         int ret;
 461                         vga_switcheroo_lock_ddc(dev->pdev);
 462                         ret = nvkm_probe_i2c(nv_encoder->i2c, 0x50);
 463                         vga_switcheroo_unlock_ddc(dev->pdev);
 464                         if (ret)
 465                                 break;
 466                 } else
 467                 if (nv_encoder->i2c) {
 468                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 469                                 break;
 470                 }
 471         }
 472
 473         /* eDP panel not detected, restore panel power GPIO to previous
 474          * state to avoid confusing the SOR for other output types.
 475          */
 476         if (!nv_encoder && panel == 0)
 477                 nvkm_gpio_set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, panel);
 478
 479         return nv_encoder;
 480 }
 481
 482 static struct nouveau_encoder *
 483 nouveau_connector_of_detect(struct drm_connector *connector)
 484 {
 485 #ifdef __powerpc__
 486         struct drm_device *dev = connector->dev;
 487         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 488         struct nouveau_encoder *nv_encoder;
 489         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 490
 491         if (!dn ||
 492             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 493               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 494                 return NULL;
 495
 496         for_each_child_of_node(dn, cn) {
 497                 const char *name = of_get_property(cn, "name", NULL);
 498                 const void *edid = of_get_property(cn, "EDID", NULL);
 499                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 500
 501                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 502                         nv_connector->edid =
 503                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 504                         of_node_put(cn);
 505                         return nv_encoder;
 506                 }
 507         }
 508 #endif
 509         return NULL;
 510 }
 511
 512 static void
 513 nouveau_connector_set_encoder(struct drm_connector *connector,
 514                               struct nouveau_encoder *nv_encoder)
 515 {
 516         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 517         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 518         struct drm_device *dev = connector->dev;
 519
 520         if (nv_connector->detected_encoder == nv_encoder)
 521                 return;
 522         nv_connector->detected_encoder = nv_encoder;
 523
 524         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 525                 connector->interlace_allowed = true;
 526                 connector->doublescan_allowed = true;
 527         } else
 528         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 529             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 530                 connector->doublescan_allowed = false;
 531                 connector->interlace_allowed = false;
 532         } else {
 533                 connector->doublescan_allowed = true;
 534                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 535                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 536                      (dev->pdev->device & 0x0ff0) != 0x0100 &&
 537                      (dev->pdev->device & 0x0ff0) != 0x0150))
 538                         /* HW is broken */
 539                         connector->interlace_allowed = false;
 540                 else
 541                         connector->interlace_allowed = true;
 542         }
 543
 544         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 545                 drm_object_property_set_value(&connector->base,
 546                         dev->mode_config.dvi_i_subconnector_property,
 547                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 548                         DRM_MODE_SUBCONNECTOR_DVID :
 549                         DRM_MODE_SUBCONNECTOR_DVIA);
 550         }
 551 }
 552
 553 static enum drm_connector_status
 554 nouveau_connector_detect(struct drm_connector *connector, bool force)
 555 {
 556         struct drm_device *dev = connector->dev;
 557         struct nouveau_drm *drm = nouveau_drm(dev);
 558         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 559         struct nouveau_encoder *nv_encoder = NULL;
 560         struct nouveau_encoder *nv_partner;
 561         struct i2c_adapter *i2c;
 562         int type;
 563         int ret;
 564         enum drm_connector_status conn_status = connector_status_disconnected;
 565
 566         /* Cleanup the previous EDID block. */
 567         if (nv_connector->edid) {
 568                 drm_mode_connector_update_edid_property(connector, NULL);
 569                 kfree(nv_connector->edid);
 570                 nv_connector->edid = NULL;
 571         }
 572
 573         ret = pm_runtime_get_sync(connector->dev->dev);
 574         if (ret < 0 && ret != -EACCES)
 575                 return conn_status;
 576
 577         nv_encoder = nouveau_connector_ddc_detect(connector);
 578         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 579                 if ((vga_switcheroo_handler_flags() &
 580                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 581                     nv_connector->type == DCB_CONNECTOR_LVDS)
 582                         nv_connector->edid = drm_get_edid_switcheroo(connector,
 583                                                                      i2c);
 584                 else
 585                         nv_connector->edid = drm_get_edid(connector, i2c);
 586
 587                 drm_mode_connector_update_edid_property(connector,
 588                                                         nv_connector->edid);
 589                 if (!nv_connector->edid) {
 590                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 591                                  connector->name);
 592                         goto detect_analog;
 593                 }
 594
 595                 /* Override encoder type for DVI-I based on whether EDID
 596                  * says the display is digital or analog, both use the
 597                  * same i2c channel so the value returned from ddc_detect
 598                  * isn't necessarily correct.
 599                  */
 600                 nv_partner = NULL;
 601                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 602                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 603                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 604                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 605
 606                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 607                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 608                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 609                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 610                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 611                                 type = DCB_OUTPUT_TMDS;
 612                         else
 613                                 type = DCB_OUTPUT_ANALOG;
 614
 615                         nv_encoder = find_encoder(connector, type);
 616                 }
 617
 618                 nouveau_connector_set_encoder(connector, nv_encoder);
 619                 conn_status = connector_status_connected;
 620                 goto out;
 621         }
 622
 623         nv_encoder = nouveau_connector_of_detect(connector);
 624         if (nv_encoder) {
 625                 nouveau_connector_set_encoder(connector, nv_encoder);
 626                 conn_status = connector_status_connected;
 627                 goto out;
 628         }
 629
 630 detect_analog:
 631         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 632         if (!nv_encoder && !nouveau_tv_disable)
 633                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 634         if (nv_encoder && force) {
 635                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 636                 const struct drm_encoder_helper_funcs *helper =
 637                                                 encoder->helper_private;
 638
 639                 if (helper->detect(encoder, connector) ==
 640                                                 connector_status_connected) {
 641                         nouveau_connector_set_encoder(connector, nv_encoder);
 642                         conn_status = connector_status_connected;
 643                         goto out;
 644                 }
 645
 646         }
 647
 648  out:
 649
 650         pm_runtime_mark_last_busy(connector->dev->dev);
 651         pm_runtime_put_autosuspend(connector->dev->dev);
 652
 653         return conn_status;
 654 }
 655
 656 static enum drm_connector_status
 657 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 658 {
 659         struct drm_device *dev = connector->dev;
 660         struct nouveau_drm *drm = nouveau_drm(dev);
 661         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 662         struct nouveau_encoder *nv_encoder = NULL;
 663         enum drm_connector_status status = connector_status_disconnected;
 664
 665         /* Cleanup the previous EDID block. */
 666         if (nv_connector->edid) {
 667                 drm_mode_connector_update_edid_property(connector, NULL);
 668                 kfree(nv_connector->edid);
 669                 nv_connector->edid = NULL;
 670         }
 671
 672         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 673         if (!nv_encoder)
 674                 return connector_status_disconnected;
 675
 676         /* Try retrieving EDID via DDC */
 677         if (!drm->vbios.fp_no_ddc) {
 678                 status = nouveau_connector_detect(connector, force);
 679                 if (status == connector_status_connected)
 680                         goto out;
 681         }
 682
 683         /* On some laptops (Sony, i'm looking at you) there appears to
 684          * be no direct way of accessing the panel's EDID.  The only
 685          * option available to us appears to be to ask ACPI for help..
 686          *
 687          * It's important this check's before trying straps, one of the
 688          * said manufacturer's laptops are configured in such a way
 689          * the nouveau decides an entry in the VBIOS FP mode table is
 690          * valid - it's not (rh#613284)
 691          */
 692         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 693                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 694                         status = connector_status_connected;
 695                         goto out;
 696                 }
 697         }
 698
 699         /* If no EDID found above, and the VBIOS indicates a hardcoded
 700          * modeline is avalilable for the panel, set it as the panel's
 701          * native mode and exit.
 702          */
 703         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 704             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 705                 status = connector_status_connected;
 706                 goto out;
 707         }
 708
 709         /* Still nothing, some VBIOS images have a hardcoded EDID block
 710          * stored for the panel stored in them.
 711          */
 712         if (!drm->vbios.fp_no_ddc) {
 713                 struct edid *edid =
 714                         (struct edid *)nouveau_bios_embedded_edid(dev);
 715                 if (edid) {
 716                         nv_connector->edid =
 717                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 718                         if (nv_connector->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         drm_mode_connector_update_edid_property(connector, 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_conn_atom *asyc = nouveau_conn_atom(connector->state);
 768         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 769         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 770         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 771         int ret;
 772
 773         if (drm_drv_uses_atomic_modeset(connector->dev))
 774                 return drm_atomic_helper_connector_set_property(connector, property, value);
 775
 776         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 777                                                     &asyc->state,
 778                                                     property, value);
 779         if (ret) {
 780                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 781                         return get_slave_funcs(encoder)->set_property(
 782                                 encoder, connector, property, value);
 783                 return ret;
 784         }
 785
 786         nv_connector->scaling_mode = asyc->scaler.mode;
 787         nv_connector->dithering_mode = asyc->dither.mode;
 788
 789         if (connector->encoder && connector->encoder->crtc) {
 790                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 791                                               &connector->encoder->crtc->mode,
 792                                                connector->encoder->crtc->x,
 793                                                connector->encoder->crtc->y,
 794                                                NULL);
 795                 if (!ret)
 796                         return -EINVAL;
 797         }
 798
 799         return 0;
 800 }
 801
 802 struct moderec {
 803         int hdisplay;
 804         int vdisplay;
 805 };
 806
 807 static struct moderec scaler_modes[] = {
 808         { 1920, 1200 },
 809         { 1920, 1080 },
 810         { 1680, 1050 },
 811         { 1600, 1200 },
 812         { 1400, 1050 },
 813         { 1280, 1024 },
 814         { 1280, 960 },
 815         { 1152, 864 },
 816         { 1024, 768 },
 817         { 800, 600 },
 818         { 720, 400 },
 819         { 640, 480 },
 820         { 640, 400 },
 821         { 640, 350 },
 822         {}
 823 };
 824
 825 static int
 826 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 827 {
 828         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 829         struct drm_display_mode *native = nv_connector->native_mode, *m;
 830         struct drm_device *dev = connector->dev;
 831         struct moderec *mode = &scaler_modes[0];
 832         int modes = 0;
 833
 834         if (!native)
 835                 return 0;
 836
 837         while (mode->hdisplay) {
 838                 if (mode->hdisplay <= native->hdisplay &&
 839                     mode->vdisplay <= native->vdisplay &&
 840                     (mode->hdisplay != native->hdisplay ||
 841                      mode->vdisplay != native->vdisplay)) {
 842                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 843                                          drm_mode_vrefresh(native), false,
 844                                          false, false);
 845                         if (!m)
 846                                 continue;
 847
 848                         drm_mode_probed_add(connector, m);
 849                         modes++;
 850                 }
 851
 852                 mode++;
 853         }
 854
 855         return modes;
 856 }
 857
 858 static void
 859 nouveau_connector_detect_depth(struct drm_connector *connector)
 860 {
 861         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 862         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 863         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 864         struct nvbios *bios = &drm->vbios;
 865         struct drm_display_mode *mode = nv_connector->native_mode;
 866         bool duallink;
 867
 868         /* if the edid is feeling nice enough to provide this info, use it */
 869         if (nv_connector->edid && connector->display_info.bpc)
 870                 return;
 871
 872         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 873         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 874                 connector->display_info.bpc = 6;
 875                 return;
 876         }
 877
 878         /* we're out of options unless we're LVDS, default to 8bpc */
 879         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 880                 connector->display_info.bpc = 8;
 881                 return;
 882         }
 883
 884         connector->display_info.bpc = 6;
 885
 886         /* LVDS: panel straps */
 887         if (bios->fp_no_ddc) {
 888                 if (bios->fp.if_is_24bit)
 889                         connector->display_info.bpc = 8;
 890                 return;
 891         }
 892
 893         /* LVDS: DDC panel, need to first determine the number of links to
 894          * know which if_is_24bit flag to check...
 895          */
 896         if (nv_connector->edid &&
 897             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 898                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 899         else
 900                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 901
 902         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 903             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 904                 connector->display_info.bpc = 8;
 905 }
 906
 907 static int
 908 nouveau_connector_get_modes(struct drm_connector *connector)
 909 {
 910         struct drm_device *dev = connector->dev;
 911         struct nouveau_drm *drm = nouveau_drm(dev);
 912         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 913         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 914         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 915         int ret = 0;
 916
 917         /* destroy the native mode, the attached monitor could have changed.
 918          */
 919         if (nv_connector->native_mode) {
 920                 drm_mode_destroy(dev, nv_connector->native_mode);
 921                 nv_connector->native_mode = NULL;
 922         }
 923
 924         if (nv_connector->edid)
 925                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 926         else
 927         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 928             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 929              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 930                 struct drm_display_mode mode;
 931
 932                 nouveau_bios_fp_mode(dev, &mode);
 933                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 934         }
 935
 936         /* Determine display colour depth for everything except LVDS now,
 937          * DP requires this before mode_valid() is called.
 938          */
 939         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 940                 nouveau_connector_detect_depth(connector);
 941
 942         /* Find the native mode if this is a digital panel, if we didn't
 943          * find any modes through DDC previously add the native mode to
 944          * the list of modes.
 945          */
 946         if (!nv_connector->native_mode)
 947                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 948         if (ret == 0 && nv_connector->native_mode) {
 949                 struct drm_display_mode *mode;
 950
 951                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 952                 drm_mode_probed_add(connector, mode);
 953                 ret = 1;
 954         }
 955
 956         /* Determine LVDS colour depth, must happen after determining
 957          * "native" mode as some VBIOS tables require us to use the
 958          * pixel clock as part of the lookup...
 959          */
 960         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 961                 nouveau_connector_detect_depth(connector);
 962
 963         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 964                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 965
 966         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 967             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 968             nv_connector->type == DCB_CONNECTOR_eDP)
 969                 ret += nouveau_connector_scaler_modes_add(connector);
 970
 971         return ret;
 972 }
 973
 974 static unsigned
 975 get_tmds_link_bandwidth(struct drm_connector *connector, bool hdmi)
 976 {
 977         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 978         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 979         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 980
 981         if (hdmi) {
 982                 if (nouveau_hdmimhz > 0)
 983                         return nouveau_hdmimhz * 1000;
 984                 /* Note: these limits are conservative, some Fermi's
 985                  * can do 297 MHz. Unclear how this can be determined.
 986                  */
 987                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
 988                         return 297000;
 989                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 990                         return 225000;
 991         }
 992         if (dcb->location != DCB_LOC_ON_CHIP ||
 993             drm->client.device.info.chipset >= 0x46)
 994                 return 165000;
 995         else if (drm->client.device.info.chipset >= 0x40)
 996                 return 155000;
 997         else if (drm->client.device.info.chipset >= 0x18)
 998                 return 135000;
 999         else
1000                 return 112000;
1001 }
1002
1003 static int
1004 nouveau_connector_mode_valid(struct drm_connector *connector,
1005                              struct drm_display_mode *mode)
1006 {
1007         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1008         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1009         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1010         unsigned min_clock = 25000, max_clock = min_clock;
1011         unsigned clock = mode->clock;
1012         bool hdmi;
1013
1014         switch (nv_encoder->dcb->type) {
1015         case DCB_OUTPUT_LVDS:
1016                 if (nv_connector->native_mode &&
1017                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1018                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1019                         return MODE_PANEL;
1020
1021                 min_clock = 0;
1022                 max_clock = 400000;
1023                 break;
1024         case DCB_OUTPUT_TMDS:
1025                 hdmi = drm_detect_hdmi_monitor(nv_connector->edid);
1026                 max_clock = get_tmds_link_bandwidth(connector, hdmi);
1027                 if (!hdmi && nouveau_duallink &&
1028                     nv_encoder->dcb->duallink_possible)
1029                         max_clock *= 2;
1030                 break;
1031         case DCB_OUTPUT_ANALOG:
1032                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1033                 if (!max_clock)
1034                         max_clock = 350000;
1035                 break;
1036         case DCB_OUTPUT_TV:
1037                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1038         case DCB_OUTPUT_DP:
1039                 max_clock  = nv_encoder->dp.link_nr;
1040                 max_clock *= nv_encoder->dp.link_bw;
1041                 clock = clock * (connector->display_info.bpc * 3) / 10;
1042                 break;
1043         default:
1044                 BUG();
1045                 return MODE_BAD;
1046         }
1047
1048         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1049                 clock *= 2;
1050
1051         if (clock < min_clock)
1052                 return MODE_CLOCK_LOW;
1053
1054         if (clock > max_clock)
1055                 return MODE_CLOCK_HIGH;
1056
1057         return MODE_OK;
1058 }
1059
1060 static struct drm_encoder *
1061 nouveau_connector_best_encoder(struct drm_connector *connector)
1062 {
1063         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1064
1065         if (nv_connector->detected_encoder)
1066                 return to_drm_encoder(nv_connector->detected_encoder);
1067
1068         return NULL;
1069 }
1070
1071 static const struct drm_connector_helper_funcs
1072 nouveau_connector_helper_funcs = {
1073         .get_modes = nouveau_connector_get_modes,
1074         .mode_valid = nouveau_connector_mode_valid,
1075         .best_encoder = nouveau_connector_best_encoder,
1076 };
1077
1078 static int
1079 nouveau_connector_dpms(struct drm_connector *connector, int mode)
1080 {
1081         if (drm_drv_uses_atomic_modeset(connector->dev))
1082                 return drm_atomic_helper_connector_dpms(connector, mode);
1083         return drm_helper_connector_dpms(connector, mode);
1084 }
1085
1086 static const struct drm_connector_funcs
1087 nouveau_connector_funcs = {
1088         .dpms = nouveau_connector_dpms,
1089         .reset = nouveau_conn_reset,
1090         .detect = nouveau_connector_detect,
1091         .force = nouveau_connector_force,
1092         .fill_modes = drm_helper_probe_single_connector_modes,
1093         .set_property = nouveau_connector_set_property,
1094         .destroy = nouveau_connector_destroy,
1095         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1096         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1097         .atomic_set_property = nouveau_conn_atomic_set_property,
1098         .atomic_get_property = nouveau_conn_atomic_get_property,
1099 };
1100
1101 static const struct drm_connector_funcs
1102 nouveau_connector_funcs_lvds = {
1103         .dpms = nouveau_connector_dpms,
1104         .reset = nouveau_conn_reset,
1105         .detect = nouveau_connector_detect_lvds,
1106         .force = nouveau_connector_force,
1107         .fill_modes = drm_helper_probe_single_connector_modes,
1108         .set_property = nouveau_connector_set_property,
1109         .destroy = nouveau_connector_destroy,
1110         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1111         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1112         .atomic_set_property = nouveau_conn_atomic_set_property,
1113         .atomic_get_property = nouveau_conn_atomic_get_property,
1114 };
1115
1116 static int
1117 nouveau_connector_hotplug(struct nvif_notify *notify)
1118 {
1119         struct nouveau_connector *nv_connector =
1120                 container_of(notify, typeof(*nv_connector), hpd);
1121         struct drm_connector *connector = &nv_connector->base;
1122         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1123         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1124         const char *name = connector->name;
1125         struct nouveau_encoder *nv_encoder;
1126
1127         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1128                 NV_DEBUG(drm, "service %s\n", name);
1129                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1130                         nv50_mstm_service(nv_encoder->dp.mstm);
1131         } else {
1132                 bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1133
1134                 NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1135                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1136                         if (!plugged)
1137                                 nv50_mstm_remove(nv_encoder->dp.mstm);
1138                 }
1139
1140                 drm_helper_hpd_irq_event(connector->dev);
1141         }
1142
1143         return NVIF_NOTIFY_KEEP;
1144 }
1145
1146 static ssize_t
1147 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1148 {
1149         struct nouveau_connector *nv_connector =
1150                 container_of(obj, typeof(*nv_connector), aux);
1151         struct nouveau_encoder *nv_encoder;
1152         struct nvkm_i2c_aux *aux;
1153         u8 size = msg->size;
1154         int ret;
1155
1156         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1157         if (!nv_encoder || !(aux = nv_encoder->aux))
1158                 return -ENODEV;
1159         if (WARN_ON(msg->size > 16))
1160                 return -E2BIG;
1161         if (msg->size == 0)
1162                 return msg->size;
1163
1164         ret = nvkm_i2c_aux_acquire(aux);
1165         if (ret)
1166                 return ret;
1167
1168         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1169                                 msg->buffer, &size);
1170         nvkm_i2c_aux_release(aux);
1171         if (ret >= 0) {
1172                 msg->reply = ret;
1173                 return size;
1174         }
1175
1176         return ret;
1177 }
1178
1179 static int
1180 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1181 {
1182         switch (dcb) {
1183         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1184         case DCB_CONNECTOR_TV_0     :
1185         case DCB_CONNECTOR_TV_1     :
1186         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1187         case DCB_CONNECTOR_DMS59_0  :
1188         case DCB_CONNECTOR_DMS59_1  :
1189         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1190         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1191         case DCB_CONNECTOR_LVDS     :
1192         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1193         case DCB_CONNECTOR_DMS59_DP0:
1194         case DCB_CONNECTOR_DMS59_DP1:
1195         case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
1196         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1197         case DCB_CONNECTOR_HDMI_0   :
1198         case DCB_CONNECTOR_HDMI_1   :
1199         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1200         default:
1201                 break;
1202         }
1203
1204         return DRM_MODE_CONNECTOR_Unknown;
1205 }
1206
1207 struct drm_connector *
1208 nouveau_connector_create(struct drm_device *dev, int index)
1209 {
1210         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1211         struct nouveau_drm *drm = nouveau_drm(dev);
1212         struct nouveau_display *disp = nouveau_display(dev);
1213         struct nouveau_connector *nv_connector = NULL;
1214         struct drm_connector *connector;
1215         int type, ret = 0;
1216         bool dummy;
1217
1218         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1219                 nv_connector = nouveau_connector(connector);
1220                 if (nv_connector->index == index)
1221                         return connector;
1222         }
1223
1224         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1225         if (!nv_connector)
1226                 return ERR_PTR(-ENOMEM);
1227
1228         connector = &nv_connector->base;
1229         nv_connector->index = index;
1230
1231         /* attempt to parse vbios connector type and hotplug gpio */
1232         nv_connector->dcb = olddcb_conn(dev, index);
1233         if (nv_connector->dcb) {
1234                 u32 entry = ROM16(nv_connector->dcb[0]);
1235                 if (olddcb_conntab(dev)[3] >= 4)
1236                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1237
1238                 nv_connector->type = nv_connector->dcb[0];
1239                 if (drm_conntype_from_dcb(nv_connector->type) ==
1240                                           DRM_MODE_CONNECTOR_Unknown) {
1241                         NV_WARN(drm, "unknown connector type %02x\n",
1242                                 nv_connector->type);
1243                         nv_connector->type = DCB_CONNECTOR_NONE;
1244                 }
1245
1246                 /* Gigabyte NX85T */
1247                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1248                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1249                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1250                 }
1251
1252                 /* Gigabyte GV-NX86T512H */
1253                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1254                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1255                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1256                 }
1257         } else {
1258                 nv_connector->type = DCB_CONNECTOR_NONE;
1259         }
1260
1261         /* no vbios data, or an unknown dcb connector type - attempt to
1262          * figure out something suitable ourselves
1263          */
1264         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1265                 struct nouveau_drm *drm = nouveau_drm(dev);
1266                 struct dcb_table *dcbt = &drm->vbios.dcb;
1267                 u32 encoders = 0;
1268                 int i;
1269
1270                 for (i = 0; i < dcbt->entries; i++) {
1271                         if (dcbt->entry[i].connector == nv_connector->index)
1272                                 encoders |= (1 << dcbt->entry[i].type);
1273                 }
1274
1275                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1276                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1277                                 nv_connector->type = DCB_CONNECTOR_DP;
1278                         else
1279                                 nv_connector->type = DCB_CONNECTOR_eDP;
1280                 } else
1281                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1282                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1283                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1284                         else
1285                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1286                 } else
1287                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1288                         nv_connector->type = DCB_CONNECTOR_VGA;
1289                 } else
1290                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1291                         nv_connector->type = DCB_CONNECTOR_LVDS;
1292                 } else
1293                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1294                         nv_connector->type = DCB_CONNECTOR_TV_0;
1295                 }
1296         }
1297
1298         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1299         case DRM_MODE_CONNECTOR_LVDS:
1300                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1301                 if (ret) {
1302                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1303                         kfree(nv_connector);
1304                         return ERR_PTR(ret);
1305                 }
1306
1307                 funcs = &nouveau_connector_funcs_lvds;
1308                 break;
1309         case DRM_MODE_CONNECTOR_DisplayPort:
1310         case DRM_MODE_CONNECTOR_eDP:
1311                 nv_connector->aux.dev = dev->dev;
1312                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1313                 ret = drm_dp_aux_register(&nv_connector->aux);
1314                 if (ret) {
1315                         NV_ERROR(drm, "failed to register aux channel\n");
1316                         kfree(nv_connector);
1317                         return ERR_PTR(ret);
1318                 }
1319
1320                 funcs = &nouveau_connector_funcs;
1321                 break;
1322         default:
1323                 funcs = &nouveau_connector_funcs;
1324                 break;
1325         }
1326
1327         /* HDMI 3D support */
1328         if ((disp->disp.oclass >= G82_DISP)
1329             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1330                 || (type == DRM_MODE_CONNECTOR_eDP)
1331                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1332                 connector->stereo_allowed = true;
1333
1334         /* defaults, will get overridden in detect() */
1335         connector->interlace_allowed = false;
1336         connector->doublescan_allowed = false;
1337
1338         drm_connector_init(dev, connector, funcs, type);
1339         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1340
1341         connector->funcs->reset(connector);
1342         nouveau_conn_attach_properties(connector);
1343
1344         /* Default scaling mode */
1345         switch (nv_connector->type) {
1346         case DCB_CONNECTOR_LVDS:
1347         case DCB_CONNECTOR_LVDS_SPWG:
1348         case DCB_CONNECTOR_eDP:
1349                 /* see note in nouveau_connector_set_property() */
1350                 if (disp->disp.oclass < NV50_DISP) {
1351                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1352                         break;
1353                 }
1354                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1355                 break;
1356         default:
1357                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1358                 break;
1359         }
1360
1361         /* dithering properties */
1362         switch (nv_connector->type) {
1363         case DCB_CONNECTOR_TV_0:
1364         case DCB_CONNECTOR_TV_1:
1365         case DCB_CONNECTOR_TV_3:
1366         case DCB_CONNECTOR_VGA:
1367                 break;
1368         default:
1369                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1370                 break;
1371         }
1372
1373         ret = nvif_notify_init(&disp->disp, nouveau_connector_hotplug, true,
1374                                NV04_DISP_NTFY_CONN,
1375                                &(struct nvif_notify_conn_req_v0) {
1376                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1377                                 .conn = index,
1378                                },
1379                                sizeof(struct nvif_notify_conn_req_v0),
1380                                sizeof(struct nvif_notify_conn_rep_v0),
1381                                &nv_connector->hpd);
1382         if (ret)
1383                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1384         else
1385                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1386
1387         drm_connector_register(connector);
1388         return connector;
1389 }