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                 nouveau_conn_atomic_destroy_state(connector, connector->state);
 255         __drm_atomic_helper_connector_reset(connector, &asyc->state);
 256         asyc->dither.mode = DITHERING_MODE_AUTO;
 257         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 258         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 259         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 260         asyc->procamp.color_vibrance = 150;
 261         asyc->procamp.vibrant_hue = 90;
 262
 263         if (nouveau_display(connector->dev)->disp.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         /* Outputs are only polled while runtime active, so resuming the
 574          * device here is unnecessary (and would deadlock upon runtime suspend
 575          * because it waits for polling to finish). We do however, want to
 576          * prevent the autosuspend timer from elapsing during this operation
 577          * if possible.
 578          */
 579         if (drm_kms_helper_is_poll_worker()) {
 580                 pm_runtime_get_noresume(dev->dev);
 581         } else {
 582                 ret = pm_runtime_get_sync(dev->dev);
 583                 if (ret < 0 && ret != -EACCES) {
 584                         pm_runtime_put_autosuspend(dev->dev);
 585                         return conn_status;
 586                 }
 587         }
 588
 589         nv_encoder = nouveau_connector_ddc_detect(connector);
 590         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 591                 if ((vga_switcheroo_handler_flags() &
 592                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 593                     nv_connector->type == DCB_CONNECTOR_LVDS)
 594                         nv_connector->edid = drm_get_edid_switcheroo(connector,
 595                                                                      i2c);
 596                 else
 597                         nv_connector->edid = drm_get_edid(connector, i2c);
 598
 599                 drm_mode_connector_update_edid_property(connector,
 600                                                         nv_connector->edid);
 601                 if (!nv_connector->edid) {
 602                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 603                                  connector->name);
 604                         goto detect_analog;
 605                 }
 606
 607                 /* Override encoder type for DVI-I based on whether EDID
 608                  * says the display is digital or analog, both use the
 609                  * same i2c channel so the value returned from ddc_detect
 610                  * isn't necessarily correct.
 611                  */
 612                 nv_partner = NULL;
 613                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 614                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 615                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 616                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 617
 618                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 619                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 620                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 621                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 622                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 623                                 type = DCB_OUTPUT_TMDS;
 624                         else
 625                                 type = DCB_OUTPUT_ANALOG;
 626
 627                         nv_encoder = find_encoder(connector, type);
 628                 }
 629
 630                 nouveau_connector_set_encoder(connector, nv_encoder);
 631                 conn_status = connector_status_connected;
 632                 goto out;
 633         }
 634
 635         nv_encoder = nouveau_connector_of_detect(connector);
 636         if (nv_encoder) {
 637                 nouveau_connector_set_encoder(connector, nv_encoder);
 638                 conn_status = connector_status_connected;
 639                 goto out;
 640         }
 641
 642 detect_analog:
 643         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 644         if (!nv_encoder && !nouveau_tv_disable)
 645                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 646         if (nv_encoder && force) {
 647                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 648                 const struct drm_encoder_helper_funcs *helper =
 649                                                 encoder->helper_private;
 650
 651                 if (helper->detect(encoder, connector) ==
 652                                                 connector_status_connected) {
 653                         nouveau_connector_set_encoder(connector, nv_encoder);
 654                         conn_status = connector_status_connected;
 655                         goto out;
 656                 }
 657
 658         }
 659
 660  out:
 661
 662         pm_runtime_mark_last_busy(dev->dev);
 663         pm_runtime_put_autosuspend(dev->dev);
 664
 665         return conn_status;
 666 }
 667
 668 static enum drm_connector_status
 669 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 670 {
 671         struct drm_device *dev = connector->dev;
 672         struct nouveau_drm *drm = nouveau_drm(dev);
 673         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 674         struct nouveau_encoder *nv_encoder = NULL;
 675         enum drm_connector_status status = connector_status_disconnected;
 676
 677         /* Cleanup the previous EDID block. */
 678         if (nv_connector->edid) {
 679                 drm_mode_connector_update_edid_property(connector, NULL);
 680                 kfree(nv_connector->edid);
 681                 nv_connector->edid = NULL;
 682         }
 683
 684         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 685         if (!nv_encoder)
 686                 return connector_status_disconnected;
 687
 688         /* Try retrieving EDID via DDC */
 689         if (!drm->vbios.fp_no_ddc) {
 690                 status = nouveau_connector_detect(connector, force);
 691                 if (status == connector_status_connected)
 692                         goto out;
 693         }
 694
 695         /* On some laptops (Sony, i'm looking at you) there appears to
 696          * be no direct way of accessing the panel's EDID.  The only
 697          * option available to us appears to be to ask ACPI for help..
 698          *
 699          * It's important this check's before trying straps, one of the
 700          * said manufacturer's laptops are configured in such a way
 701          * the nouveau decides an entry in the VBIOS FP mode table is
 702          * valid - it's not (rh#613284)
 703          */
 704         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 705                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 706                         status = connector_status_connected;
 707                         goto out;
 708                 }
 709         }
 710
 711         /* If no EDID found above, and the VBIOS indicates a hardcoded
 712          * modeline is avalilable for the panel, set it as the panel's
 713          * native mode and exit.
 714          */
 715         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 716             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 717                 status = connector_status_connected;
 718                 goto out;
 719         }
 720
 721         /* Still nothing, some VBIOS images have a hardcoded EDID block
 722          * stored for the panel stored in them.
 723          */
 724         if (!drm->vbios.fp_no_ddc) {
 725                 struct edid *edid =
 726                         (struct edid *)nouveau_bios_embedded_edid(dev);
 727                 if (edid) {
 728                         nv_connector->edid =
 729                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 730                         if (nv_connector->edid)
 731                                 status = connector_status_connected;
 732                 }
 733         }
 734
 735 out:
 736 #if defined(CONFIG_ACPI_BUTTON) || \
 737         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 738         if (status == connector_status_connected &&
 739             !nouveau_ignorelid && !acpi_lid_open())
 740                 status = connector_status_unknown;
 741 #endif
 742
 743         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 744         nouveau_connector_set_encoder(connector, nv_encoder);
 745         return status;
 746 }
 747
 748 static void
 749 nouveau_connector_force(struct drm_connector *connector)
 750 {
 751         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 752         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 753         struct nouveau_encoder *nv_encoder;
 754         int type;
 755
 756         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 757                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 758                         type = DCB_OUTPUT_TMDS;
 759                 else
 760                         type = DCB_OUTPUT_ANALOG;
 761         } else
 762                 type = DCB_OUTPUT_ANY;
 763
 764         nv_encoder = find_encoder(connector, type);
 765         if (!nv_encoder) {
 766                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 767                          connector->name);
 768                 connector->status = connector_status_disconnected;
 769                 return;
 770         }
 771
 772         nouveau_connector_set_encoder(connector, nv_encoder);
 773 }
 774
 775 static int
 776 nouveau_connector_set_property(struct drm_connector *connector,
 777                                struct drm_property *property, uint64_t value)
 778 {
 779         struct nouveau_conn_atom *asyc = nouveau_conn_atom(connector->state);
 780         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 781         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 782         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 783         int ret;
 784
 785         ret = connector->funcs->atomic_set_property(&nv_connector->base,
 786                                                     &asyc->state,
 787                                                     property, value);
 788         if (ret) {
 789                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 790                         return get_slave_funcs(encoder)->set_property(
 791                                 encoder, connector, property, value);
 792                 return ret;
 793         }
 794
 795         nv_connector->scaling_mode = asyc->scaler.mode;
 796         nv_connector->dithering_mode = asyc->dither.mode;
 797
 798         if (connector->encoder && connector->encoder->crtc) {
 799                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 800                                               &connector->encoder->crtc->mode,
 801                                                connector->encoder->crtc->x,
 802                                                connector->encoder->crtc->y,
 803                                                NULL);
 804                 if (!ret)
 805                         return -EINVAL;
 806         }
 807
 808         return 0;
 809 }
 810
 811 struct moderec {
 812         int hdisplay;
 813         int vdisplay;
 814 };
 815
 816 static struct moderec scaler_modes[] = {
 817         { 1920, 1200 },
 818         { 1920, 1080 },
 819         { 1680, 1050 },
 820         { 1600, 1200 },
 821         { 1400, 1050 },
 822         { 1280, 1024 },
 823         { 1280, 960 },
 824         { 1152, 864 },
 825         { 1024, 768 },
 826         { 800, 600 },
 827         { 720, 400 },
 828         { 640, 480 },
 829         { 640, 400 },
 830         { 640, 350 },
 831         {}
 832 };
 833
 834 static int
 835 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 836 {
 837         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 838         struct drm_display_mode *native = nv_connector->native_mode, *m;
 839         struct drm_device *dev = connector->dev;
 840         struct moderec *mode = &scaler_modes[0];
 841         int modes = 0;
 842
 843         if (!native)
 844                 return 0;
 845
 846         while (mode->hdisplay) {
 847                 if (mode->hdisplay <= native->hdisplay &&
 848                     mode->vdisplay <= native->vdisplay &&
 849                     (mode->hdisplay != native->hdisplay ||
 850                      mode->vdisplay != native->vdisplay)) {
 851                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 852                                          drm_mode_vrefresh(native), false,
 853                                          false, false);
 854                         if (!m)
 855                                 continue;
 856
 857                         drm_mode_probed_add(connector, m);
 858                         modes++;
 859                 }
 860
 861                 mode++;
 862         }
 863
 864         return modes;
 865 }
 866
 867 static void
 868 nouveau_connector_detect_depth(struct drm_connector *connector)
 869 {
 870         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 871         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 872         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 873         struct nvbios *bios = &drm->vbios;
 874         struct drm_display_mode *mode = nv_connector->native_mode;
 875         bool duallink;
 876
 877         /* if the edid is feeling nice enough to provide this info, use it */
 878         if (nv_connector->edid && connector->display_info.bpc)
 879                 return;
 880
 881         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 882         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 883                 connector->display_info.bpc = 6;
 884                 return;
 885         }
 886
 887         /* we're out of options unless we're LVDS, default to 8bpc */
 888         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 889                 connector->display_info.bpc = 8;
 890                 return;
 891         }
 892
 893         connector->display_info.bpc = 6;
 894
 895         /* LVDS: panel straps */
 896         if (bios->fp_no_ddc) {
 897                 if (bios->fp.if_is_24bit)
 898                         connector->display_info.bpc = 8;
 899                 return;
 900         }
 901
 902         /* LVDS: DDC panel, need to first determine the number of links to
 903          * know which if_is_24bit flag to check...
 904          */
 905         if (nv_connector->edid &&
 906             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 907                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 908         else
 909                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 910
 911         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 912             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 913                 connector->display_info.bpc = 8;
 914 }
 915
 916 static int
 917 nouveau_connector_get_modes(struct drm_connector *connector)
 918 {
 919         struct drm_device *dev = connector->dev;
 920         struct nouveau_drm *drm = nouveau_drm(dev);
 921         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 922         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 923         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 924         int ret = 0;
 925
 926         /* destroy the native mode, the attached monitor could have changed.
 927          */
 928         if (nv_connector->native_mode) {
 929                 drm_mode_destroy(dev, nv_connector->native_mode);
 930                 nv_connector->native_mode = NULL;
 931         }
 932
 933         if (nv_connector->edid)
 934                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 935         else
 936         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 937             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 938              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 939                 struct drm_display_mode mode;
 940
 941                 nouveau_bios_fp_mode(dev, &mode);
 942                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 943         }
 944
 945         /* Determine display colour depth for everything except LVDS now,
 946          * DP requires this before mode_valid() is called.
 947          */
 948         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 949                 nouveau_connector_detect_depth(connector);
 950
 951         /* Find the native mode if this is a digital panel, if we didn't
 952          * find any modes through DDC previously add the native mode to
 953          * the list of modes.
 954          */
 955         if (!nv_connector->native_mode)
 956                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 957         if (ret == 0 && nv_connector->native_mode) {
 958                 struct drm_display_mode *mode;
 959
 960                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 961                 drm_mode_probed_add(connector, mode);
 962                 ret = 1;
 963         }
 964
 965         /* Determine LVDS colour depth, must happen after determining
 966          * "native" mode as some VBIOS tables require us to use the
 967          * pixel clock as part of the lookup...
 968          */
 969         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 970                 nouveau_connector_detect_depth(connector);
 971
 972         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 973                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 974
 975         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 976             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 977             nv_connector->type == DCB_CONNECTOR_eDP)
 978                 ret += nouveau_connector_scaler_modes_add(connector);
 979
 980         return ret;
 981 }
 982
 983 static unsigned
 984 get_tmds_link_bandwidth(struct drm_connector *connector, bool hdmi)
 985 {
 986         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 987         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 988         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 989
 990         if (hdmi) {
 991                 if (nouveau_hdmimhz > 0)
 992                         return nouveau_hdmimhz * 1000;
 993                 /* Note: these limits are conservative, some Fermi's
 994                  * can do 297 MHz. Unclear how this can be determined.
 995                  */
 996                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
 997                         return 297000;
 998                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 999                         return 225000;
1000         }
1001         if (dcb->location != DCB_LOC_ON_CHIP ||
1002             drm->client.device.info.chipset >= 0x46)
1003                 return 165000;
1004         else if (drm->client.device.info.chipset >= 0x40)
1005                 return 155000;
1006         else if (drm->client.device.info.chipset >= 0x18)
1007                 return 135000;
1008         else
1009                 return 112000;
1010 }
1011
1012 static int
1013 nouveau_connector_mode_valid(struct drm_connector *connector,
1014                              struct drm_display_mode *mode)
1015 {
1016         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1017         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1018         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1019         unsigned min_clock = 25000, max_clock = min_clock;
1020         unsigned clock = mode->clock;
1021         bool hdmi;
1022
1023         switch (nv_encoder->dcb->type) {
1024         case DCB_OUTPUT_LVDS:
1025                 if (nv_connector->native_mode &&
1026                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1027                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1028                         return MODE_PANEL;
1029
1030                 min_clock = 0;
1031                 max_clock = 400000;
1032                 break;
1033         case DCB_OUTPUT_TMDS:
1034                 hdmi = drm_detect_hdmi_monitor(nv_connector->edid);
1035                 max_clock = get_tmds_link_bandwidth(connector, hdmi);
1036                 if (!hdmi && nouveau_duallink &&
1037                     nv_encoder->dcb->duallink_possible)
1038                         max_clock *= 2;
1039                 break;
1040         case DCB_OUTPUT_ANALOG:
1041                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1042                 if (!max_clock)
1043                         max_clock = 350000;
1044                 break;
1045         case DCB_OUTPUT_TV:
1046                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1047         case DCB_OUTPUT_DP:
1048                 max_clock  = nv_encoder->dp.link_nr;
1049                 max_clock *= nv_encoder->dp.link_bw;
1050                 clock = clock * (connector->display_info.bpc * 3) / 10;
1051                 break;
1052         default:
1053                 BUG();
1054                 return MODE_BAD;
1055         }
1056
1057         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1058                 clock *= 2;
1059
1060         if (clock < min_clock)
1061                 return MODE_CLOCK_LOW;
1062
1063         if (clock > max_clock)
1064                 return MODE_CLOCK_HIGH;
1065
1066         return MODE_OK;
1067 }
1068
1069 static struct drm_encoder *
1070 nouveau_connector_best_encoder(struct drm_connector *connector)
1071 {
1072         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1073
1074         if (nv_connector->detected_encoder)
1075                 return to_drm_encoder(nv_connector->detected_encoder);
1076
1077         return NULL;
1078 }
1079
1080 static const struct drm_connector_helper_funcs
1081 nouveau_connector_helper_funcs = {
1082         .get_modes = nouveau_connector_get_modes,
1083         .mode_valid = nouveau_connector_mode_valid,
1084         .best_encoder = nouveau_connector_best_encoder,
1085 };
1086
1087 static const struct drm_connector_funcs
1088 nouveau_connector_funcs = {
1089         .dpms = drm_helper_connector_dpms,
1090         .reset = nouveau_conn_reset,
1091         .detect = nouveau_connector_detect,
1092         .force = nouveau_connector_force,
1093         .fill_modes = drm_helper_probe_single_connector_modes,
1094         .set_property = nouveau_connector_set_property,
1095         .destroy = nouveau_connector_destroy,
1096         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1097         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1098         .atomic_set_property = nouveau_conn_atomic_set_property,
1099         .atomic_get_property = nouveau_conn_atomic_get_property,
1100 };
1101
1102 static const struct drm_connector_funcs
1103 nouveau_connector_funcs_lvds = {
1104         .dpms = drm_helper_connector_dpms,
1105         .reset = nouveau_conn_reset,
1106         .detect = nouveau_connector_detect_lvds,
1107         .force = nouveau_connector_force,
1108         .fill_modes = drm_helper_probe_single_connector_modes,
1109         .set_property = nouveau_connector_set_property,
1110         .destroy = nouveau_connector_destroy,
1111         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1112         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1113         .atomic_set_property = nouveau_conn_atomic_set_property,
1114         .atomic_get_property = nouveau_conn_atomic_get_property,
1115 };
1116
1117 static int
1118 nouveau_connector_hotplug(struct nvif_notify *notify)
1119 {
1120         struct nouveau_connector *nv_connector =
1121                 container_of(notify, typeof(*nv_connector), hpd);
1122         struct drm_connector *connector = &nv_connector->base;
1123         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1124         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1125         const char *name = connector->name;
1126         struct nouveau_encoder *nv_encoder;
1127         int ret;
1128
1129         ret = pm_runtime_get(drm->dev->dev);
1130         if (ret == 0) {
1131                 /* We can't block here if there's a pending PM request
1132                  * running, as we'll deadlock nouveau_display_fini() when it
1133                  * calls nvif_put() on our nvif_notify struct. So, simply
1134                  * defer the hotplug event until the device finishes resuming
1135                  */
1136                 NV_DEBUG(drm, "Deferring HPD on %s until runtime resume\n",
1137                          name);
1138                 schedule_work(&drm->hpd_work);
1139
1140                 pm_runtime_put_noidle(drm->dev->dev);
1141                 return NVIF_NOTIFY_KEEP;
1142         } else if (ret != 1 && ret != -EACCES) {
1143                 NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
1144                         name, ret);
1145                 return NVIF_NOTIFY_DROP;
1146         }
1147
1148         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1149                 NV_DEBUG(drm, "service %s\n", name);
1150                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1151                         nv50_mstm_service(nv_encoder->dp.mstm);
1152         } else {
1153                 bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1154
1155                 NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1156                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1157                         if (!plugged)
1158                                 nv50_mstm_remove(nv_encoder->dp.mstm);
1159                 }
1160
1161                 drm_helper_hpd_irq_event(connector->dev);
1162         }
1163
1164         pm_runtime_mark_last_busy(drm->dev->dev);
1165         pm_runtime_put_autosuspend(drm->dev->dev);
1166         return NVIF_NOTIFY_KEEP;
1167 }
1168
1169 static ssize_t
1170 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1171 {
1172         struct nouveau_connector *nv_connector =
1173                 container_of(obj, typeof(*nv_connector), aux);
1174         struct nouveau_encoder *nv_encoder;
1175         struct nvkm_i2c_aux *aux;
1176         u8 size = msg->size;
1177         int ret;
1178
1179         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1180         if (!nv_encoder || !(aux = nv_encoder->aux))
1181                 return -ENODEV;
1182         if (WARN_ON(msg->size > 16))
1183                 return -E2BIG;
1184
1185         ret = nvkm_i2c_aux_acquire(aux);
1186         if (ret)
1187                 return ret;
1188
1189         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1190                                 msg->buffer, &size);
1191         nvkm_i2c_aux_release(aux);
1192         if (ret >= 0) {
1193                 msg->reply = ret;
1194                 return size;
1195         }
1196
1197         return ret;
1198 }
1199
1200 static int
1201 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1202 {
1203         switch (dcb) {
1204         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1205         case DCB_CONNECTOR_TV_0     :
1206         case DCB_CONNECTOR_TV_1     :
1207         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1208         case DCB_CONNECTOR_DMS59_0  :
1209         case DCB_CONNECTOR_DMS59_1  :
1210         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1211         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1212         case DCB_CONNECTOR_LVDS     :
1213         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1214         case DCB_CONNECTOR_DMS59_DP0:
1215         case DCB_CONNECTOR_DMS59_DP1:
1216         case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
1217         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1218         case DCB_CONNECTOR_HDMI_0   :
1219         case DCB_CONNECTOR_HDMI_1   :
1220         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1221         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1222         default:
1223                 break;
1224         }
1225
1226         return DRM_MODE_CONNECTOR_Unknown;
1227 }
1228
1229 struct drm_connector *
1230 nouveau_connector_create(struct drm_device *dev, int index)
1231 {
1232         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1233         struct nouveau_drm *drm = nouveau_drm(dev);
1234         struct nouveau_display *disp = nouveau_display(dev);
1235         struct nouveau_connector *nv_connector = NULL;
1236         struct drm_connector *connector;
1237         struct drm_connector_list_iter conn_iter;
1238         int type, ret = 0;
1239         bool dummy;
1240
1241         drm_connector_list_iter_begin(dev, &conn_iter);
1242         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1243                 nv_connector = nouveau_connector(connector);
1244                 if (nv_connector->index == index) {
1245                         drm_connector_list_iter_end(&conn_iter);
1246                         return connector;
1247                 }
1248         }
1249         drm_connector_list_iter_end(&conn_iter);
1250
1251         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1252         if (!nv_connector)
1253                 return ERR_PTR(-ENOMEM);
1254
1255         connector = &nv_connector->base;
1256         nv_connector->index = index;
1257
1258         /* attempt to parse vbios connector type and hotplug gpio */
1259         nv_connector->dcb = olddcb_conn(dev, index);
1260         if (nv_connector->dcb) {
1261                 u32 entry = ROM16(nv_connector->dcb[0]);
1262                 if (olddcb_conntab(dev)[3] >= 4)
1263                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1264
1265                 nv_connector->type = nv_connector->dcb[0];
1266                 if (drm_conntype_from_dcb(nv_connector->type) ==
1267                                           DRM_MODE_CONNECTOR_Unknown) {
1268                         NV_WARN(drm, "unknown connector type %02x\n",
1269                                 nv_connector->type);
1270                         nv_connector->type = DCB_CONNECTOR_NONE;
1271                 }
1272
1273                 /* Gigabyte NX85T */
1274                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1275                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1276                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1277                 }
1278
1279                 /* Gigabyte GV-NX86T512H */
1280                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1281                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1282                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1283                 }
1284         } else {
1285                 nv_connector->type = DCB_CONNECTOR_NONE;
1286         }
1287
1288         /* no vbios data, or an unknown dcb connector type - attempt to
1289          * figure out something suitable ourselves
1290          */
1291         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1292                 struct nouveau_drm *drm = nouveau_drm(dev);
1293                 struct dcb_table *dcbt = &drm->vbios.dcb;
1294                 u32 encoders = 0;
1295                 int i;
1296
1297                 for (i = 0; i < dcbt->entries; i++) {
1298                         if (dcbt->entry[i].connector == nv_connector->index)
1299                                 encoders |= (1 << dcbt->entry[i].type);
1300                 }
1301
1302                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1303                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1304                                 nv_connector->type = DCB_CONNECTOR_DP;
1305                         else
1306                                 nv_connector->type = DCB_CONNECTOR_eDP;
1307                 } else
1308                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1309                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1310                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1311                         else
1312                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1313                 } else
1314                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1315                         nv_connector->type = DCB_CONNECTOR_VGA;
1316                 } else
1317                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1318                         nv_connector->type = DCB_CONNECTOR_LVDS;
1319                 } else
1320                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1321                         nv_connector->type = DCB_CONNECTOR_TV_0;
1322                 }
1323         }
1324
1325         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1326         case DRM_MODE_CONNECTOR_LVDS:
1327                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1328                 if (ret) {
1329                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1330                         kfree(nv_connector);
1331                         return ERR_PTR(ret);
1332                 }
1333
1334                 funcs = &nouveau_connector_funcs_lvds;
1335                 break;
1336         case DRM_MODE_CONNECTOR_DisplayPort:
1337         case DRM_MODE_CONNECTOR_eDP:
1338                 nv_connector->aux.dev = dev->dev;
1339                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1340                 ret = drm_dp_aux_register(&nv_connector->aux);
1341                 if (ret) {
1342                         NV_ERROR(drm, "failed to register aux channel\n");
1343                         kfree(nv_connector);
1344                         return ERR_PTR(ret);
1345                 }
1346
1347                 funcs = &nouveau_connector_funcs;
1348                 break;
1349         default:
1350                 funcs = &nouveau_connector_funcs;
1351                 break;
1352         }
1353
1354         /* HDMI 3D support */
1355         if ((disp->disp.oclass >= G82_DISP)
1356             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1357                 || (type == DRM_MODE_CONNECTOR_eDP)
1358                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1359                 connector->stereo_allowed = true;
1360
1361         /* defaults, will get overridden in detect() */
1362         connector->interlace_allowed = false;
1363         connector->doublescan_allowed = false;
1364
1365         drm_connector_init(dev, connector, funcs, type);
1366         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1367
1368         connector->funcs->reset(connector);
1369         nouveau_conn_attach_properties(connector);
1370
1371         /* Default scaling mode */
1372         switch (nv_connector->type) {
1373         case DCB_CONNECTOR_LVDS:
1374         case DCB_CONNECTOR_LVDS_SPWG:
1375         case DCB_CONNECTOR_eDP:
1376                 /* see note in nouveau_connector_set_property() */
1377                 if (disp->disp.oclass < NV50_DISP) {
1378                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1379                         break;
1380                 }
1381                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1382                 break;
1383         default:
1384                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1385                 break;
1386         }
1387
1388         /* dithering properties */
1389         switch (nv_connector->type) {
1390         case DCB_CONNECTOR_TV_0:
1391         case DCB_CONNECTOR_TV_1:
1392         case DCB_CONNECTOR_TV_3:
1393         case DCB_CONNECTOR_VGA:
1394                 break;
1395         default:
1396                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1397                 break;
1398         }
1399
1400         ret = nvif_notify_init(&disp->disp, nouveau_connector_hotplug, true,
1401                                NV04_DISP_NTFY_CONN,
1402                                &(struct nvif_notify_conn_req_v0) {
1403                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1404                                 .conn = index,
1405                                },
1406                                sizeof(struct nvif_notify_conn_req_v0),
1407                                sizeof(struct nvif_notify_conn_rep_v0),
1408                                &nv_connector->hpd);
1409         if (ret)
1410                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1411         else
1412                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1413
1414         drm_connector_register(connector);
1415         return connector;
1416 }