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 "drmP.h"
  30 #include "drm_edid.h"
  31 #include "drm_crtc_helper.h"
  32
  33 #include "nouveau_reg.h"
  34 #include "nouveau_drv.h"
  35 #include "nouveau_encoder.h"
  36 #include "nouveau_crtc.h"
  37 #include "nouveau_connector.h"
  38 #include "nouveau_hw.h"
  39
  40 static inline struct drm_encoder_slave_funcs *
  41 get_slave_funcs(struct nouveau_encoder *enc)
  42 {
  43         return to_encoder_slave(to_drm_encoder(enc))->slave_funcs;
  44 }
  45
  46 static struct nouveau_encoder *
  47 find_encoder_by_type(struct drm_connector *connector, int type)
  48 {
  49         struct drm_device *dev = connector->dev;
  50         struct nouveau_encoder *nv_encoder;
  51         struct drm_mode_object *obj;
  52         int i, id;
  53
  54         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  55                 id = connector->encoder_ids[i];
  56                 if (!id)
  57                         break;
  58
  59                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  60                 if (!obj)
  61                         continue;
  62                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  63
  64                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  65                         return nv_encoder;
  66         }
  67
  68         return NULL;
  69 }
  70
  71 struct nouveau_connector *
  72 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  73 {
  74         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  75         struct drm_connector *drm_connector;
  76
  77         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  78                 if (drm_connector->encoder == to_drm_encoder(encoder))
  79                         return nouveau_connector(drm_connector);
  80         }
  81
  82         return NULL;
  83 }
  84
  85
  86 static void
  87 nouveau_connector_destroy(struct drm_connector *drm_connector)
  88 {
  89         struct nouveau_connector *nv_connector =
  90                 nouveau_connector(drm_connector);
  91         struct drm_device *dev;
  92
  93         if (!nv_connector)
  94                 return;
  95
  96         dev = nv_connector->base.dev;
  97         NV_DEBUG_KMS(dev, "\n");
  98
  99         kfree(nv_connector->edid);
 100         drm_sysfs_connector_remove(drm_connector);
 101         drm_connector_cleanup(drm_connector);
 102         kfree(drm_connector);
 103 }
 104
 105 static void
 106 nouveau_connector_ddc_prepare(struct drm_connector *connector, int *flags)
 107 {
 108         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 109
 110         if (dev_priv->card_type >= NV_50)
 111                 return;
 112
 113         *flags = 0;
 114         if (NVLockVgaCrtcs(dev_priv->dev, false))
 115                 *flags |= 1;
 116         if (nv_heads_tied(dev_priv->dev))
 117                 *flags |= 2;
 118
 119         if (*flags & 2)
 120                 NVSetOwner(dev_priv->dev, 0); /* necessary? */
 121 }
 122
 123 static void
 124 nouveau_connector_ddc_finish(struct drm_connector *connector, int flags)
 125 {
 126         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 127
 128         if (dev_priv->card_type >= NV_50)
 129                 return;
 130
 131         if (flags & 2)
 132                 NVSetOwner(dev_priv->dev, 4);
 133         if (flags & 1)
 134                 NVLockVgaCrtcs(dev_priv->dev, true);
 135 }
 136
 137 static struct nouveau_i2c_chan *
 138 nouveau_connector_ddc_detect(struct drm_connector *connector,
 139                              struct nouveau_encoder **pnv_encoder)
 140 {
 141         struct drm_device *dev = connector->dev;
 142         uint8_t out_buf[] = { 0x0, 0x0}, buf[2];
 143         int ret, flags, i;
 144
 145         struct i2c_msg msgs[] = {
 146                 {
 147                         .addr = 0x50,
 148                         .flags = 0,
 149                         .len = 1,
 150                         .buf = out_buf,
 151                 },
 152                 {
 153                         .addr = 0x50,
 154                         .flags = I2C_M_RD,
 155                         .len = 1,
 156                         .buf = buf,
 157                 }
 158         };
 159
 160         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 161                 struct nouveau_i2c_chan *i2c = NULL;
 162                 struct nouveau_encoder *nv_encoder;
 163                 struct drm_mode_object *obj;
 164                 int id;
 165
 166                 id = connector->encoder_ids[i];
 167                 if (!id)
 168                         break;
 169
 170                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 171                 if (!obj)
 172                         continue;
 173                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 174
 175                 if (nv_encoder->dcb->i2c_index < 0xf)
 176                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 177                 if (!i2c)
 178                         continue;
 179
 180                 nouveau_connector_ddc_prepare(connector, &flags);
 181                 ret = i2c_transfer(&i2c->adapter, msgs, 2);
 182                 nouveau_connector_ddc_finish(connector, flags);
 183
 184                 if (ret == 2) {
 185                         *pnv_encoder = nv_encoder;
 186                         return i2c;
 187                 }
 188         }
 189
 190         return NULL;
 191 }
 192
 193 static void
 194 nouveau_connector_set_encoder(struct drm_connector *connector,
 195                               struct nouveau_encoder *nv_encoder)
 196 {
 197         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 198         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 199         struct drm_device *dev = connector->dev;
 200
 201         if (nv_connector->detected_encoder == nv_encoder)
 202                 return;
 203         nv_connector->detected_encoder = nv_encoder;
 204
 205         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 206             nv_encoder->dcb->type == OUTPUT_TMDS) {
 207                 connector->doublescan_allowed = false;
 208                 connector->interlace_allowed = false;
 209         } else {
 210                 connector->doublescan_allowed = true;
 211                 if (dev_priv->card_type == NV_20 ||
 212                    (dev_priv->card_type == NV_10 &&
 213                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 214                     (dev->pci_device & 0x0ff0) != 0x0150))
 215                         /* HW is broken */
 216                         connector->interlace_allowed = false;
 217                 else
 218                         connector->interlace_allowed = true;
 219         }
 220
 221         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 222                 drm_connector_property_set_value(connector,
 223                         dev->mode_config.dvi_i_subconnector_property,
 224                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 225                         DRM_MODE_SUBCONNECTOR_DVID :
 226                         DRM_MODE_SUBCONNECTOR_DVIA);
 227         }
 228 }
 229
 230 static enum drm_connector_status
 231 nouveau_connector_detect(struct drm_connector *connector)
 232 {
 233         struct drm_device *dev = connector->dev;
 234         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 235         struct nouveau_encoder *nv_encoder = NULL;
 236         struct nouveau_i2c_chan *i2c;
 237         int type, flags;
 238
 239         if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS)
 240                 nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 241         if (nv_encoder && nv_connector->native_mode) {
 242                 unsigned status = connector_status_connected;
 243
 244 #if defined(CONFIG_ACPI_BUTTON) || \
 245         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 246                 if (!nouveau_ignorelid && !acpi_lid_open())
 247                         status = connector_status_unknown;
 248 #endif
 249                 nouveau_connector_set_encoder(connector, nv_encoder);
 250                 return status;
 251         }
 252
 253         /* Cleanup the previous EDID block. */
 254         if (nv_connector->edid) {
 255                 drm_mode_connector_update_edid_property(connector, NULL);
 256                 kfree(nv_connector->edid);
 257                 nv_connector->edid = NULL;
 258         }
 259
 260         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 261         if (i2c) {
 262                 nouveau_connector_ddc_prepare(connector, &flags);
 263                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 264                 nouveau_connector_ddc_finish(connector, flags);
 265                 drm_mode_connector_update_edid_property(connector,
 266                                                         nv_connector->edid);
 267                 if (!nv_connector->edid) {
 268                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 269                                  drm_get_connector_name(connector));
 270                         goto detect_analog;
 271                 }
 272
 273                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 274                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 275                         NV_ERROR(dev, "Detected %s, but failed init\n",
 276                                  drm_get_connector_name(connector));
 277                         return connector_status_disconnected;
 278                 }
 279
 280                 /* Override encoder type for DVI-I based on whether EDID
 281                  * says the display is digital or analog, both use the
 282                  * same i2c channel so the value returned from ddc_detect
 283                  * isn't necessarily correct.
 284                  */
 285                 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 286                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 287                                 type = OUTPUT_TMDS;
 288                         else
 289                                 type = OUTPUT_ANALOG;
 290
 291                         nv_encoder = find_encoder_by_type(connector, type);
 292                         if (!nv_encoder) {
 293                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 294                                               "but no object!\n", type,
 295                                          drm_get_connector_name(connector));
 296                                 return connector_status_disconnected;
 297                         }
 298                 }
 299
 300                 nouveau_connector_set_encoder(connector, nv_encoder);
 301                 return connector_status_connected;
 302         }
 303
 304 detect_analog:
 305         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 306         if (!nv_encoder && !nouveau_tv_disable)
 307                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 308         if (nv_encoder) {
 309                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 310                 struct drm_encoder_helper_funcs *helper =
 311                                                 encoder->helper_private;
 312
 313                 if (helper->detect(encoder, connector) ==
 314                                                 connector_status_connected) {
 315                         nouveau_connector_set_encoder(connector, nv_encoder);
 316                         return connector_status_connected;
 317                 }
 318
 319         }
 320
 321         return connector_status_disconnected;
 322 }
 323
 324 static void
 325 nouveau_connector_force(struct drm_connector *connector)
 326 {
 327         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 328         struct nouveau_encoder *nv_encoder;
 329         int type;
 330
 331         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 332                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 333                         type = OUTPUT_TMDS;
 334                 else
 335                         type = OUTPUT_ANALOG;
 336         } else
 337                 type = OUTPUT_ANY;
 338
 339         nv_encoder = find_encoder_by_type(connector, type);
 340         if (!nv_encoder) {
 341                 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
 342                          drm_get_connector_name(connector));
 343                 connector->status = connector_status_disconnected;
 344                 return;
 345         }
 346
 347         nouveau_connector_set_encoder(connector, nv_encoder);
 348 }
 349
 350 static int
 351 nouveau_connector_set_property(struct drm_connector *connector,
 352                                struct drm_property *property, uint64_t value)
 353 {
 354         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 355         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 356         struct drm_device *dev = connector->dev;
 357         int ret;
 358
 359         /* Scaling mode */
 360         if (property == dev->mode_config.scaling_mode_property) {
 361                 struct nouveau_crtc *nv_crtc = NULL;
 362                 bool modeset = false;
 363
 364                 switch (value) {
 365                 case DRM_MODE_SCALE_NONE:
 366                 case DRM_MODE_SCALE_FULLSCREEN:
 367                 case DRM_MODE_SCALE_CENTER:
 368                 case DRM_MODE_SCALE_ASPECT:
 369                         break;
 370                 default:
 371                         return -EINVAL;
 372                 }
 373
 374                 /* LVDS always needs gpu scaling */
 375                 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
 376                     value == DRM_MODE_SCALE_NONE)
 377                         return -EINVAL;
 378
 379                 /* Changing between GPU and panel scaling requires a full
 380                  * modeset
 381                  */
 382                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 383                     (value == DRM_MODE_SCALE_NONE))
 384                         modeset = true;
 385                 nv_connector->scaling_mode = value;
 386
 387                 if (connector->encoder && connector->encoder->crtc)
 388                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 389                 if (!nv_crtc)
 390                         return 0;
 391
 392                 if (modeset || !nv_crtc->set_scale) {
 393                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 394                                                         &nv_crtc->base.mode,
 395                                                         nv_crtc->base.x,
 396                                                         nv_crtc->base.y, NULL);
 397                         if (!ret)
 398                                 return -EINVAL;
 399                 } else {
 400                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 401                         if (ret)
 402                                 return ret;
 403                 }
 404
 405                 return 0;
 406         }
 407
 408         /* Dithering */
 409         if (property == dev->mode_config.dithering_mode_property) {
 410                 struct nouveau_crtc *nv_crtc = NULL;
 411
 412                 if (value == DRM_MODE_DITHERING_ON)
 413                         nv_connector->use_dithering = true;
 414                 else
 415                         nv_connector->use_dithering = false;
 416
 417                 if (connector->encoder && connector->encoder->crtc)
 418                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 419
 420                 if (!nv_crtc || !nv_crtc->set_dither)
 421                         return 0;
 422
 423                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 424                                            true);
 425         }
 426
 427         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 428                 return get_slave_funcs(nv_encoder)->
 429                         set_property(to_drm_encoder(nv_encoder), connector, property, value);
 430
 431         return -EINVAL;
 432 }
 433
 434 static struct drm_display_mode *
 435 nouveau_connector_native_mode(struct nouveau_connector *connector)
 436 {
 437         struct drm_device *dev = connector->base.dev;
 438         struct drm_display_mode *mode, *largest = NULL;
 439         int high_w = 0, high_h = 0, high_v = 0;
 440
 441         /* Use preferred mode if there is one.. */
 442         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 443                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 444                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 445                         return drm_mode_duplicate(dev, mode);
 446                 }
 447         }
 448
 449         /* Otherwise, take the resolution with the largest width, then height,
 450          * then vertical refresh
 451          */
 452         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 453                 if (mode->hdisplay < high_w)
 454                         continue;
 455
 456                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 457                         continue;
 458
 459                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 460                     mode->vrefresh < high_v)
 461                         continue;
 462
 463                 high_w = mode->hdisplay;
 464                 high_h = mode->vdisplay;
 465                 high_v = mode->vrefresh;
 466                 largest = mode;
 467         }
 468
 469         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 470                       high_w, high_h, high_v);
 471         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 472 }
 473
 474 struct moderec {
 475         int hdisplay;
 476         int vdisplay;
 477 };
 478
 479 static struct moderec scaler_modes[] = {
 480         { 1920, 1200 },
 481         { 1920, 1080 },
 482         { 1680, 1050 },
 483         { 1600, 1200 },
 484         { 1400, 1050 },
 485         { 1280, 1024 },
 486         { 1280, 960 },
 487         { 1152, 864 },
 488         { 1024, 768 },
 489         { 800, 600 },
 490         { 720, 400 },
 491         { 640, 480 },
 492         { 640, 400 },
 493         { 640, 350 },
 494         {}
 495 };
 496
 497 static int
 498 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 499 {
 500         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 501         struct drm_display_mode *native = nv_connector->native_mode, *m;
 502         struct drm_device *dev = connector->dev;
 503         struct moderec *mode = &scaler_modes[0];
 504         int modes = 0;
 505
 506         if (!native)
 507                 return 0;
 508
 509         while (mode->hdisplay) {
 510                 if (mode->hdisplay <= native->hdisplay &&
 511                     mode->vdisplay <= native->vdisplay) {
 512                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 513                                          drm_mode_vrefresh(native), false,
 514                                          false, false);
 515                         if (!m)
 516                                 continue;
 517
 518                         m->type |= DRM_MODE_TYPE_DRIVER;
 519
 520                         drm_mode_probed_add(connector, m);
 521                         modes++;
 522                 }
 523
 524                 mode++;
 525         }
 526
 527         return modes;
 528 }
 529
 530 static int
 531 nouveau_connector_get_modes(struct drm_connector *connector)
 532 {
 533         struct drm_device *dev = connector->dev;
 534         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 535         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 536         int ret = 0;
 537
 538         /* If we're not LVDS, destroy the previous native mode, the attached
 539          * monitor could have changed.
 540          */
 541         if (nv_connector->dcb->type != DCB_CONNECTOR_LVDS &&
 542             nv_connector->native_mode) {
 543                 drm_mode_destroy(dev, nv_connector->native_mode);
 544                 nv_connector->native_mode = NULL;
 545         }
 546
 547         if (nv_connector->edid)
 548                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 549
 550         /* Find the native mode if this is a digital panel, if we didn't
 551          * find any modes through DDC previously add the native mode to
 552          * the list of modes.
 553          */
 554         if (!nv_connector->native_mode)
 555                 nv_connector->native_mode =
 556                         nouveau_connector_native_mode(nv_connector);
 557         if (ret == 0 && nv_connector->native_mode) {
 558                 struct drm_display_mode *mode;
 559
 560                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 561                 drm_mode_probed_add(connector, mode);
 562                 ret = 1;
 563         }
 564
 565         if (nv_encoder->dcb->type == OUTPUT_TV)
 566                 ret = get_slave_funcs(nv_encoder)->
 567                         get_modes(to_drm_encoder(nv_encoder), connector);
 568
 569         if (nv_encoder->dcb->type == OUTPUT_LVDS)
 570                 ret += nouveau_connector_scaler_modes_add(connector);
 571
 572         return ret;
 573 }
 574
 575 static int
 576 nouveau_connector_mode_valid(struct drm_connector *connector,
 577                              struct drm_display_mode *mode)
 578 {
 579         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 580         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 581         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 582         unsigned min_clock = 25000, max_clock = min_clock;
 583         unsigned clock = mode->clock;
 584
 585         switch (nv_encoder->dcb->type) {
 586         case OUTPUT_LVDS:
 587                 BUG_ON(!nv_connector->native_mode);
 588                 if (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 589                     mode->vdisplay > nv_connector->native_mode->vdisplay)
 590                         return MODE_PANEL;
 591
 592                 min_clock = 0;
 593                 max_clock = 400000;
 594                 break;
 595         case OUTPUT_TMDS:
 596                 if ((dev_priv->card_type >= NV_50 && !nouveau_duallink) ||
 597                     (dev_priv->card_type < NV_50 &&
 598                      !nv_encoder->dcb->duallink_possible))
 599                         max_clock = 165000;
 600                 else
 601                         max_clock = 330000;
 602                 break;
 603         case OUTPUT_ANALOG:
 604                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 605                 if (!max_clock)
 606                         max_clock = 350000;
 607                 break;
 608         case OUTPUT_TV:
 609                 return get_slave_funcs(nv_encoder)->
 610                         mode_valid(to_drm_encoder(nv_encoder), mode);
 611         case OUTPUT_DP:
 612                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 613                         max_clock = nv_encoder->dp.link_nr * 270000;
 614                 else
 615                         max_clock = nv_encoder->dp.link_nr * 162000;
 616
 617                 clock *= 3;
 618                 break;
 619         default:
 620                 BUG_ON(1);
 621                 return MODE_BAD;
 622         }
 623
 624         if (clock < min_clock)
 625                 return MODE_CLOCK_LOW;
 626
 627         if (clock > max_clock)
 628                 return MODE_CLOCK_HIGH;
 629
 630         return MODE_OK;
 631 }
 632
 633 static struct drm_encoder *
 634 nouveau_connector_best_encoder(struct drm_connector *connector)
 635 {
 636         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 637
 638         if (nv_connector->detected_encoder)
 639                 return to_drm_encoder(nv_connector->detected_encoder);
 640
 641         return NULL;
 642 }
 643
 644 static const struct drm_connector_helper_funcs
 645 nouveau_connector_helper_funcs = {
 646         .get_modes = nouveau_connector_get_modes,
 647         .mode_valid = nouveau_connector_mode_valid,
 648         .best_encoder = nouveau_connector_best_encoder,
 649 };
 650
 651 static const struct drm_connector_funcs
 652 nouveau_connector_funcs = {
 653         .dpms = drm_helper_connector_dpms,
 654         .save = NULL,
 655         .restore = NULL,
 656         .detect = nouveau_connector_detect,
 657         .destroy = nouveau_connector_destroy,
 658         .fill_modes = drm_helper_probe_single_connector_modes,
 659         .set_property = nouveau_connector_set_property,
 660         .force = nouveau_connector_force
 661 };
 662
 663 static int
 664 nouveau_connector_create_lvds(struct drm_device *dev,
 665                               struct drm_connector *connector)
 666 {
 667         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 668         struct drm_nouveau_private *dev_priv = dev->dev_private;
 669         struct nouveau_i2c_chan *i2c = NULL;
 670         struct nouveau_encoder *nv_encoder;
 671         struct drm_display_mode native, *mode, *temp;
 672         bool dummy, if_is_24bit = false;
 673         int ret, flags;
 674
 675         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 676         if (!nv_encoder)
 677                 return -ENODEV;
 678
 679         ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &if_is_24bit);
 680         if (ret) {
 681                 NV_ERROR(dev, "Error parsing LVDS table, disabling LVDS\n");
 682                 return ret;
 683         }
 684         nv_connector->use_dithering = !if_is_24bit;
 685
 686         /* Firstly try getting EDID over DDC, if allowed and I2C channel
 687          * is available.
 688          */
 689         if (!dev_priv->vbios.fp_no_ddc && nv_encoder->dcb->i2c_index < 0xf)
 690                 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 691
 692         if (i2c) {
 693                 nouveau_connector_ddc_prepare(connector, &flags);
 694                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 695                 nouveau_connector_ddc_finish(connector, flags);
 696         }
 697
 698         /* If no EDID found above, and the VBIOS indicates a hardcoded
 699          * modeline is avalilable for the panel, set it as the panel's
 700          * native mode and exit.
 701          */
 702         if (!nv_connector->edid && nouveau_bios_fp_mode(dev, &native) &&
 703              (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 704               dev_priv->vbios.fp_no_ddc)) {
 705                 nv_connector->native_mode = drm_mode_duplicate(dev, &native);
 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 (!nv_connector->edid && !nv_connector->native_mode &&
 713             !dev_priv->vbios.fp_no_ddc) {
 714                 struct edid *edid =
 715                         (struct edid *)nouveau_bios_embedded_edid(dev);
 716                 if (edid) {
 717                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 718                         *(nv_connector->edid) = *edid;
 719                 }
 720         }
 721
 722         if (!nv_connector->edid)
 723                 goto out;
 724
 725         /* We didn't find/use a panel mode from the VBIOS, so parse the EDID
 726          * block and look for the preferred mode there.
 727          */
 728         ret = drm_add_edid_modes(connector, nv_connector->edid);
 729         if (ret == 0)
 730                 goto out;
 731         nv_connector->detected_encoder = nv_encoder;
 732         nv_connector->native_mode = nouveau_connector_native_mode(nv_connector);
 733         list_for_each_entry_safe(mode, temp, &connector->probed_modes, head)
 734                 drm_mode_remove(connector, mode);
 735
 736 out:
 737         if (!nv_connector->native_mode) {
 738                 NV_ERROR(dev, "LVDS present in DCB table, but couldn't "
 739                               "determine its native mode.  Disabling.\n");
 740                 return -ENODEV;
 741         }
 742
 743         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 744         return 0;
 745 }
 746
 747 int
 748 nouveau_connector_create(struct drm_device *dev,
 749                          struct dcb_connector_table_entry *dcb)
 750 {
 751         struct drm_nouveau_private *dev_priv = dev->dev_private;
 752         struct nouveau_connector *nv_connector = NULL;
 753         struct drm_connector *connector;
 754         struct drm_encoder *encoder;
 755         int ret, type;
 756
 757         NV_DEBUG_KMS(dev, "\n");
 758
 759         switch (dcb->type) {
 760         case DCB_CONNECTOR_NONE:
 761                 return 0;
 762         case DCB_CONNECTOR_VGA:
 763                 NV_INFO(dev, "Detected a VGA connector\n");
 764                 type = DRM_MODE_CONNECTOR_VGA;
 765                 break;
 766         case DCB_CONNECTOR_TV_0:
 767         case DCB_CONNECTOR_TV_1:
 768         case DCB_CONNECTOR_TV_3:
 769                 NV_INFO(dev, "Detected a TV connector\n");
 770                 type = DRM_MODE_CONNECTOR_TV;
 771                 break;
 772         case DCB_CONNECTOR_DVI_I:
 773                 NV_INFO(dev, "Detected a DVI-I connector\n");
 774                 type = DRM_MODE_CONNECTOR_DVII;
 775                 break;
 776         case DCB_CONNECTOR_DVI_D:
 777                 NV_INFO(dev, "Detected a DVI-D connector\n");
 778                 type = DRM_MODE_CONNECTOR_DVID;
 779                 break;
 780         case DCB_CONNECTOR_HDMI_0:
 781         case DCB_CONNECTOR_HDMI_1:
 782                 NV_INFO(dev, "Detected a HDMI connector\n");
 783                 type = DRM_MODE_CONNECTOR_HDMIA;
 784                 break;
 785         case DCB_CONNECTOR_LVDS:
 786                 NV_INFO(dev, "Detected a LVDS connector\n");
 787                 type = DRM_MODE_CONNECTOR_LVDS;
 788                 break;
 789         case DCB_CONNECTOR_DP:
 790                 NV_INFO(dev, "Detected a DisplayPort connector\n");
 791                 type = DRM_MODE_CONNECTOR_DisplayPort;
 792                 break;
 793         case DCB_CONNECTOR_eDP:
 794                 NV_INFO(dev, "Detected an eDP connector\n");
 795                 type = DRM_MODE_CONNECTOR_eDP;
 796                 break;
 797         default:
 798                 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
 799                 return -EINVAL;
 800         }
 801
 802         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 803         if (!nv_connector)
 804                 return -ENOMEM;
 805         nv_connector->dcb = dcb;
 806         connector = &nv_connector->base;
 807
 808         /* defaults, will get overridden in detect() */
 809         connector->interlace_allowed = false;
 810         connector->doublescan_allowed = false;
 811
 812         drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
 813         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 814
 815         /* attach encoders */
 816         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 817                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 818
 819                 if (nv_encoder->dcb->connector != dcb->index)
 820                         continue;
 821
 822                 if (get_slave_funcs(nv_encoder))
 823                         get_slave_funcs(nv_encoder)->create_resources(encoder, connector);
 824
 825                 drm_mode_connector_attach_encoder(connector, encoder);
 826         }
 827
 828         if (!connector->encoder_ids[0]) {
 829                 NV_WARN(dev, "  no encoders, ignoring\n");
 830                 drm_connector_cleanup(connector);
 831                 kfree(connector);
 832                 return 0;
 833         }
 834
 835         /* Init DVI-I specific properties */
 836         if (dcb->type == DCB_CONNECTOR_DVI_I) {
 837                 drm_mode_create_dvi_i_properties(dev);
 838                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 839                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 840         }
 841
 842         if (dcb->type != DCB_CONNECTOR_LVDS)
 843                 nv_connector->use_dithering = false;
 844
 845         switch (dcb->type) {
 846         case DCB_CONNECTOR_VGA:
 847                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 848                 if (dev_priv->card_type >= NV_50) {
 849                         drm_connector_attach_property(connector,
 850                                         dev->mode_config.scaling_mode_property,
 851                                         nv_connector->scaling_mode);
 852                 }
 853                 /* fall-through */
 854         case DCB_CONNECTOR_TV_0:
 855         case DCB_CONNECTOR_TV_1:
 856         case DCB_CONNECTOR_TV_3:
 857                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 858                 break;
 859         case DCB_CONNECTOR_DP:
 860         case DCB_CONNECTOR_eDP:
 861         case DCB_CONNECTOR_HDMI_0:
 862         case DCB_CONNECTOR_HDMI_1:
 863         case DCB_CONNECTOR_DVI_I:
 864         case DCB_CONNECTOR_DVI_D:
 865                 if (dev_priv->card_type >= NV_50)
 866                         connector->polled = DRM_CONNECTOR_POLL_HPD;
 867                 else
 868                         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 869                 /* fall-through */
 870         default:
 871                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 872
 873                 drm_connector_attach_property(connector,
 874                                 dev->mode_config.scaling_mode_property,
 875                                 nv_connector->scaling_mode);
 876                 drm_connector_attach_property(connector,
 877                                 dev->mode_config.dithering_mode_property,
 878                                 nv_connector->use_dithering ?
 879                                 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 880                 break;
 881         }
 882
 883         drm_sysfs_connector_add(connector);
 884
 885         if (dcb->type == DCB_CONNECTOR_LVDS) {
 886                 ret = nouveau_connector_create_lvds(dev, connector);
 887                 if (ret) {
 888                         connector->funcs->destroy(connector);
 889                         return ret;
 890                 }
 891         }
 892
 893         return 0;
 894 }