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 #ifdef CONFIG_ACPI
 245                 if (!nouveau_ignorelid && !acpi_lid_open())
 246                         status = connector_status_unknown;
 247 #endif
 248                 nouveau_connector_set_encoder(connector, nv_encoder);
 249                 return status;
 250         }
 251
 252         /* Cleanup the previous EDID block. */
 253         if (nv_connector->edid) {
 254                 drm_mode_connector_update_edid_property(connector, NULL);
 255                 kfree(nv_connector->edid);
 256                 nv_connector->edid = NULL;
 257         }
 258
 259         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 260         if (i2c) {
 261                 nouveau_connector_ddc_prepare(connector, &flags);
 262                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 263                 nouveau_connector_ddc_finish(connector, flags);
 264                 drm_mode_connector_update_edid_property(connector,
 265                                                         nv_connector->edid);
 266                 if (!nv_connector->edid) {
 267                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 268                                  drm_get_connector_name(connector));
 269                         goto detect_analog;
 270                 }
 271
 272                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 273                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 274                         NV_ERROR(dev, "Detected %s, but failed init\n",
 275                                  drm_get_connector_name(connector));
 276                         return connector_status_disconnected;
 277                 }
 278
 279                 /* Override encoder type for DVI-I based on whether EDID
 280                  * says the display is digital or analog, both use the
 281                  * same i2c channel so the value returned from ddc_detect
 282                  * isn't necessarily correct.
 283                  */
 284                 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 285                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 286                                 type = OUTPUT_TMDS;
 287                         else
 288                                 type = OUTPUT_ANALOG;
 289
 290                         nv_encoder = find_encoder_by_type(connector, type);
 291                         if (!nv_encoder) {
 292                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 293                                               "but no object!\n", type,
 294                                          drm_get_connector_name(connector));
 295                                 return connector_status_disconnected;
 296                         }
 297                 }
 298
 299                 nouveau_connector_set_encoder(connector, nv_encoder);
 300                 return connector_status_connected;
 301         }
 302
 303 detect_analog:
 304         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 305         if (!nv_encoder && !nouveau_tv_disable)
 306                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 307         if (nv_encoder) {
 308                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 309                 struct drm_encoder_helper_funcs *helper =
 310                                                 encoder->helper_private;
 311
 312                 if (helper->detect(encoder, connector) ==
 313                                                 connector_status_connected) {
 314                         nouveau_connector_set_encoder(connector, nv_encoder);
 315                         return connector_status_connected;
 316                 }
 317
 318         }
 319
 320         return connector_status_disconnected;
 321 }
 322
 323 static void
 324 nouveau_connector_force(struct drm_connector *connector)
 325 {
 326         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 327         struct nouveau_encoder *nv_encoder;
 328         int type;
 329
 330         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 331                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 332                         type = OUTPUT_TMDS;
 333                 else
 334                         type = OUTPUT_ANALOG;
 335         } else
 336                 type = OUTPUT_ANY;
 337
 338         nv_encoder = find_encoder_by_type(connector, type);
 339         if (!nv_encoder) {
 340                 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
 341                          drm_get_connector_name(connector));
 342                 connector->status = connector_status_disconnected;
 343                 return;
 344         }
 345
 346         nouveau_connector_set_encoder(connector, nv_encoder);
 347 }
 348
 349 static int
 350 nouveau_connector_set_property(struct drm_connector *connector,
 351                                struct drm_property *property, uint64_t value)
 352 {
 353         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 354         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 355         struct drm_device *dev = connector->dev;
 356         int ret;
 357
 358         /* Scaling mode */
 359         if (property == dev->mode_config.scaling_mode_property) {
 360                 struct nouveau_crtc *nv_crtc = NULL;
 361                 bool modeset = false;
 362
 363                 switch (value) {
 364                 case DRM_MODE_SCALE_NONE:
 365                 case DRM_MODE_SCALE_FULLSCREEN:
 366                 case DRM_MODE_SCALE_CENTER:
 367                 case DRM_MODE_SCALE_ASPECT:
 368                         break;
 369                 default:
 370                         return -EINVAL;
 371                 }
 372
 373                 /* LVDS always needs gpu scaling */
 374                 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
 375                     value == DRM_MODE_SCALE_NONE)
 376                         return -EINVAL;
 377
 378                 /* Changing between GPU and panel scaling requires a full
 379                  * modeset
 380                  */
 381                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 382                     (value == DRM_MODE_SCALE_NONE))
 383                         modeset = true;
 384                 nv_connector->scaling_mode = value;
 385
 386                 if (connector->encoder && connector->encoder->crtc)
 387                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 388                 if (!nv_crtc)
 389                         return 0;
 390
 391                 if (modeset || !nv_crtc->set_scale) {
 392                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 393                                                         &nv_crtc->base.mode,
 394                                                         nv_crtc->base.x,
 395                                                         nv_crtc->base.y, NULL);
 396                         if (!ret)
 397                                 return -EINVAL;
 398                 } else {
 399                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 400                         if (ret)
 401                                 return ret;
 402                 }
 403
 404                 return 0;
 405         }
 406
 407         /* Dithering */
 408         if (property == dev->mode_config.dithering_mode_property) {
 409                 struct nouveau_crtc *nv_crtc = NULL;
 410
 411                 if (value == DRM_MODE_DITHERING_ON)
 412                         nv_connector->use_dithering = true;
 413                 else
 414                         nv_connector->use_dithering = false;
 415
 416                 if (connector->encoder && connector->encoder->crtc)
 417                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 418
 419                 if (!nv_crtc || !nv_crtc->set_dither)
 420                         return 0;
 421
 422                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 423                                            true);
 424         }
 425
 426         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 427                 return get_slave_funcs(nv_encoder)->
 428                         set_property(to_drm_encoder(nv_encoder), connector, property, value);
 429
 430         return -EINVAL;
 431 }
 432
 433 static struct drm_display_mode *
 434 nouveau_connector_native_mode(struct nouveau_connector *connector)
 435 {
 436         struct drm_device *dev = connector->base.dev;
 437         struct drm_display_mode *mode, *largest = NULL;
 438         int high_w = 0, high_h = 0, high_v = 0;
 439
 440         /* Use preferred mode if there is one.. */
 441         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 442                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 443                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 444                         return drm_mode_duplicate(dev, mode);
 445                 }
 446         }
 447
 448         /* Otherwise, take the resolution with the largest width, then height,
 449          * then vertical refresh
 450          */
 451         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 452                 if (mode->hdisplay < high_w)
 453                         continue;
 454
 455                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 456                         continue;
 457
 458                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 459                     mode->vrefresh < high_v)
 460                         continue;
 461
 462                 high_w = mode->hdisplay;
 463                 high_h = mode->vdisplay;
 464                 high_v = mode->vrefresh;
 465                 largest = mode;
 466         }
 467
 468         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 469                       high_w, high_h, high_v);
 470         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 471 }
 472
 473 struct moderec {
 474         int hdisplay;
 475         int vdisplay;
 476 };
 477
 478 static struct moderec scaler_modes[] = {
 479         { 1920, 1200 },
 480         { 1920, 1080 },
 481         { 1680, 1050 },
 482         { 1600, 1200 },
 483         { 1400, 1050 },
 484         { 1280, 1024 },
 485         { 1280, 960 },
 486         { 1152, 864 },
 487         { 1024, 768 },
 488         { 800, 600 },
 489         { 720, 400 },
 490         { 640, 480 },
 491         { 640, 400 },
 492         { 640, 350 },
 493         {}
 494 };
 495
 496 static int
 497 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 498 {
 499         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 500         struct drm_display_mode *native = nv_connector->native_mode, *m;
 501         struct drm_device *dev = connector->dev;
 502         struct moderec *mode = &scaler_modes[0];
 503         int modes = 0;
 504
 505         if (!native)
 506                 return 0;
 507
 508         while (mode->hdisplay) {
 509                 if (mode->hdisplay <= native->hdisplay &&
 510                     mode->vdisplay <= native->vdisplay) {
 511                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 512                                          drm_mode_vrefresh(native), false,
 513                                          false, false);
 514                         if (!m)
 515                                 continue;
 516
 517                         m->type |= DRM_MODE_TYPE_DRIVER;
 518
 519                         drm_mode_probed_add(connector, m);
 520                         modes++;
 521                 }
 522
 523                 mode++;
 524         }
 525
 526         return modes;
 527 }
 528
 529 static int
 530 nouveau_connector_get_modes(struct drm_connector *connector)
 531 {
 532         struct drm_device *dev = connector->dev;
 533         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 534         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 535         int ret = 0;
 536
 537         /* If we're not LVDS, destroy the previous native mode, the attached
 538          * monitor could have changed.
 539          */
 540         if (nv_connector->dcb->type != DCB_CONNECTOR_LVDS &&
 541             nv_connector->native_mode) {
 542                 drm_mode_destroy(dev, nv_connector->native_mode);
 543                 nv_connector->native_mode = NULL;
 544         }
 545
 546         if (nv_connector->edid)
 547                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 548
 549         /* Find the native mode if this is a digital panel, if we didn't
 550          * find any modes through DDC previously add the native mode to
 551          * the list of modes.
 552          */
 553         if (!nv_connector->native_mode)
 554                 nv_connector->native_mode =
 555                         nouveau_connector_native_mode(nv_connector);
 556         if (ret == 0 && nv_connector->native_mode) {
 557                 struct drm_display_mode *mode;
 558
 559                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 560                 drm_mode_probed_add(connector, mode);
 561                 ret = 1;
 562         }
 563
 564         if (nv_encoder->dcb->type == OUTPUT_TV)
 565                 ret = get_slave_funcs(nv_encoder)->
 566                         get_modes(to_drm_encoder(nv_encoder), connector);
 567
 568         if (nv_encoder->dcb->type == OUTPUT_LVDS)
 569                 ret += nouveau_connector_scaler_modes_add(connector);
 570
 571         return ret;
 572 }
 573
 574 static int
 575 nouveau_connector_mode_valid(struct drm_connector *connector,
 576                              struct drm_display_mode *mode)
 577 {
 578         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 579         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 580         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 581         unsigned min_clock = 25000, max_clock = min_clock;
 582         unsigned clock = mode->clock;
 583
 584         switch (nv_encoder->dcb->type) {
 585         case OUTPUT_LVDS:
 586                 BUG_ON(!nv_connector->native_mode);
 587                 if (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 588                     mode->vdisplay > nv_connector->native_mode->vdisplay)
 589                         return MODE_PANEL;
 590
 591                 min_clock = 0;
 592                 max_clock = 400000;
 593                 break;
 594         case OUTPUT_TMDS:
 595                 if ((dev_priv->card_type >= NV_50 && !nouveau_duallink) ||
 596                     (dev_priv->card_type < NV_50 &&
 597                      !nv_encoder->dcb->duallink_possible))
 598                         max_clock = 165000;
 599                 else
 600                         max_clock = 330000;
 601                 break;
 602         case OUTPUT_ANALOG:
 603                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 604                 if (!max_clock)
 605                         max_clock = 350000;
 606                 break;
 607         case OUTPUT_TV:
 608                 return get_slave_funcs(nv_encoder)->
 609                         mode_valid(to_drm_encoder(nv_encoder), mode);
 610         case OUTPUT_DP:
 611                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 612                         max_clock = nv_encoder->dp.link_nr * 270000;
 613                 else
 614                         max_clock = nv_encoder->dp.link_nr * 162000;
 615
 616                 clock *= 3;
 617                 break;
 618         default:
 619                 BUG_ON(1);
 620                 return MODE_BAD;
 621         }
 622
 623         if (clock < min_clock)
 624                 return MODE_CLOCK_LOW;
 625
 626         if (clock > max_clock)
 627                 return MODE_CLOCK_HIGH;
 628
 629         return MODE_OK;
 630 }
 631
 632 static struct drm_encoder *
 633 nouveau_connector_best_encoder(struct drm_connector *connector)
 634 {
 635         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 636
 637         if (nv_connector->detected_encoder)
 638                 return to_drm_encoder(nv_connector->detected_encoder);
 639
 640         return NULL;
 641 }
 642
 643 static const struct drm_connector_helper_funcs
 644 nouveau_connector_helper_funcs = {
 645         .get_modes = nouveau_connector_get_modes,
 646         .mode_valid = nouveau_connector_mode_valid,
 647         .best_encoder = nouveau_connector_best_encoder,
 648 };
 649
 650 static const struct drm_connector_funcs
 651 nouveau_connector_funcs = {
 652         .dpms = drm_helper_connector_dpms,
 653         .save = NULL,
 654         .restore = NULL,
 655         .detect = nouveau_connector_detect,
 656         .destroy = nouveau_connector_destroy,
 657         .fill_modes = drm_helper_probe_single_connector_modes,
 658         .set_property = nouveau_connector_set_property,
 659         .force = nouveau_connector_force
 660 };
 661
 662 static int
 663 nouveau_connector_create_lvds(struct drm_device *dev,
 664                               struct drm_connector *connector)
 665 {
 666         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 667         struct drm_nouveau_private *dev_priv = dev->dev_private;
 668         struct nouveau_i2c_chan *i2c = NULL;
 669         struct nouveau_encoder *nv_encoder;
 670         struct drm_display_mode native, *mode, *temp;
 671         bool dummy, if_is_24bit = false;
 672         int ret, flags;
 673
 674         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 675         if (!nv_encoder)
 676                 return -ENODEV;
 677
 678         ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &if_is_24bit);
 679         if (ret) {
 680                 NV_ERROR(dev, "Error parsing LVDS table, disabling LVDS\n");
 681                 return ret;
 682         }
 683         nv_connector->use_dithering = !if_is_24bit;
 684
 685         /* Firstly try getting EDID over DDC, if allowed and I2C channel
 686          * is available.
 687          */
 688         if (!dev_priv->vbios.fp_no_ddc && nv_encoder->dcb->i2c_index < 0xf)
 689                 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 690
 691         if (i2c) {
 692                 nouveau_connector_ddc_prepare(connector, &flags);
 693                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 694                 nouveau_connector_ddc_finish(connector, flags);
 695         }
 696
 697         /* If no EDID found above, and the VBIOS indicates a hardcoded
 698          * modeline is avalilable for the panel, set it as the panel's
 699          * native mode and exit.
 700          */
 701         if (!nv_connector->edid && nouveau_bios_fp_mode(dev, &native) &&
 702              (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 703               dev_priv->vbios.fp_no_ddc)) {
 704                 nv_connector->native_mode = drm_mode_duplicate(dev, &native);
 705                 goto out;
 706         }
 707
 708         /* Still nothing, some VBIOS images have a hardcoded EDID block
 709          * stored for the panel stored in them.
 710          */
 711         if (!nv_connector->edid && !nv_connector->native_mode &&
 712             !dev_priv->vbios.fp_no_ddc) {
 713                 struct edid *edid =
 714                         (struct edid *)nouveau_bios_embedded_edid(dev);
 715                 if (edid) {
 716                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 717                         *(nv_connector->edid) = *edid;
 718                 }
 719         }
 720
 721         if (!nv_connector->edid)
 722                 goto out;
 723
 724         /* We didn't find/use a panel mode from the VBIOS, so parse the EDID
 725          * block and look for the preferred mode there.
 726          */
 727         ret = drm_add_edid_modes(connector, nv_connector->edid);
 728         if (ret == 0)
 729                 goto out;
 730         nv_connector->detected_encoder = nv_encoder;
 731         nv_connector->native_mode = nouveau_connector_native_mode(nv_connector);
 732         list_for_each_entry_safe(mode, temp, &connector->probed_modes, head)
 733                 drm_mode_remove(connector, mode);
 734
 735 out:
 736         if (!nv_connector->native_mode) {
 737                 NV_ERROR(dev, "LVDS present in DCB table, but couldn't "
 738                               "determine its native mode.  Disabling.\n");
 739                 return -ENODEV;
 740         }
 741
 742         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 743         return 0;
 744 }
 745
 746 int
 747 nouveau_connector_create(struct drm_device *dev,
 748                          struct dcb_connector_table_entry *dcb)
 749 {
 750         struct drm_nouveau_private *dev_priv = dev->dev_private;
 751         struct nouveau_connector *nv_connector = NULL;
 752         struct drm_connector *connector;
 753         struct drm_encoder *encoder;
 754         int ret, type;
 755
 756         NV_DEBUG_KMS(dev, "\n");
 757
 758         switch (dcb->type) {
 759         case DCB_CONNECTOR_NONE:
 760                 return 0;
 761         case DCB_CONNECTOR_VGA:
 762                 NV_INFO(dev, "Detected a VGA connector\n");
 763                 type = DRM_MODE_CONNECTOR_VGA;
 764                 break;
 765         case DCB_CONNECTOR_TV_0:
 766         case DCB_CONNECTOR_TV_1:
 767         case DCB_CONNECTOR_TV_3:
 768                 NV_INFO(dev, "Detected a TV connector\n");
 769                 type = DRM_MODE_CONNECTOR_TV;
 770                 break;
 771         case DCB_CONNECTOR_DVI_I:
 772                 NV_INFO(dev, "Detected a DVI-I connector\n");
 773                 type = DRM_MODE_CONNECTOR_DVII;
 774                 break;
 775         case DCB_CONNECTOR_DVI_D:
 776                 NV_INFO(dev, "Detected a DVI-D connector\n");
 777                 type = DRM_MODE_CONNECTOR_DVID;
 778                 break;
 779         case DCB_CONNECTOR_HDMI_0:
 780         case DCB_CONNECTOR_HDMI_1:
 781                 NV_INFO(dev, "Detected a HDMI connector\n");
 782                 type = DRM_MODE_CONNECTOR_HDMIA;
 783                 break;
 784         case DCB_CONNECTOR_LVDS:
 785                 NV_INFO(dev, "Detected a LVDS connector\n");
 786                 type = DRM_MODE_CONNECTOR_LVDS;
 787                 break;
 788         case DCB_CONNECTOR_DP:
 789                 NV_INFO(dev, "Detected a DisplayPort connector\n");
 790                 type = DRM_MODE_CONNECTOR_DisplayPort;
 791                 break;
 792         case DCB_CONNECTOR_eDP:
 793                 NV_INFO(dev, "Detected an eDP connector\n");
 794                 type = DRM_MODE_CONNECTOR_eDP;
 795                 break;
 796         default:
 797                 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
 798                 return -EINVAL;
 799         }
 800
 801         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 802         if (!nv_connector)
 803                 return -ENOMEM;
 804         nv_connector->dcb = dcb;
 805         connector = &nv_connector->base;
 806
 807         /* defaults, will get overridden in detect() */
 808         connector->interlace_allowed = false;
 809         connector->doublescan_allowed = false;
 810
 811         drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
 812         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 813
 814         /* attach encoders */
 815         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 816                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 817
 818                 if (nv_encoder->dcb->connector != dcb->index)
 819                         continue;
 820
 821                 if (get_slave_funcs(nv_encoder))
 822                         get_slave_funcs(nv_encoder)->create_resources(encoder, connector);
 823
 824                 drm_mode_connector_attach_encoder(connector, encoder);
 825         }
 826
 827         if (!connector->encoder_ids[0]) {
 828                 NV_WARN(dev, "  no encoders, ignoring\n");
 829                 drm_connector_cleanup(connector);
 830                 kfree(connector);
 831                 return 0;
 832         }
 833
 834         /* Init DVI-I specific properties */
 835         if (dcb->type == DCB_CONNECTOR_DVI_I) {
 836                 drm_mode_create_dvi_i_properties(dev);
 837                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 838                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 839         }
 840
 841         if (dcb->type != DCB_CONNECTOR_LVDS)
 842                 nv_connector->use_dithering = false;
 843
 844         switch (dcb->type) {
 845         case DCB_CONNECTOR_VGA:
 846                 if (dev_priv->card_type >= NV_50) {
 847                         drm_connector_attach_property(connector,
 848                                         dev->mode_config.scaling_mode_property,
 849                                         nv_connector->scaling_mode);
 850                 }
 851                 /* fall-through */
 852         case DCB_CONNECTOR_TV_0:
 853         case DCB_CONNECTOR_TV_1:
 854         case DCB_CONNECTOR_TV_3:
 855                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 856                 break;
 857         default:
 858                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 859
 860                 drm_connector_attach_property(connector,
 861                                 dev->mode_config.scaling_mode_property,
 862                                 nv_connector->scaling_mode);
 863                 drm_connector_attach_property(connector,
 864                                 dev->mode_config.dithering_mode_property,
 865                                 nv_connector->use_dithering ?
 866                                 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 867                 break;
 868         }
 869
 870         drm_sysfs_connector_add(connector);
 871
 872         if (dcb->type == DCB_CONNECTOR_LVDS) {
 873                 ret = nouveau_connector_create_lvds(dev, connector);
 874                 if (ret) {
 875                         connector->funcs->destroy(connector);
 876                         return ret;
 877                 }
 878         }
 879
 880         return 0;
 881 }