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 = nv_connector->base.dev;
  92
  93         NV_DEBUG_KMS(dev, "\n");
  94
  95         if (!nv_connector)
  96                 return;
  97
  98         kfree(nv_connector->edid);
  99         drm_sysfs_connector_remove(drm_connector);
 100         drm_connector_cleanup(drm_connector);
 101         kfree(drm_connector);
 102 }
 103
 104 static void
 105 nouveau_connector_ddc_prepare(struct drm_connector *connector, int *flags)
 106 {
 107         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 108
 109         if (dev_priv->card_type >= NV_50)
 110                 return;
 111
 112         *flags = 0;
 113         if (NVLockVgaCrtcs(dev_priv->dev, false))
 114                 *flags |= 1;
 115         if (nv_heads_tied(dev_priv->dev))
 116                 *flags |= 2;
 117
 118         if (*flags & 2)
 119                 NVSetOwner(dev_priv->dev, 0); /* necessary? */
 120 }
 121
 122 static void
 123 nouveau_connector_ddc_finish(struct drm_connector *connector, int flags)
 124 {
 125         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 126
 127         if (dev_priv->card_type >= NV_50)
 128                 return;
 129
 130         if (flags & 2)
 131                 NVSetOwner(dev_priv->dev, 4);
 132         if (flags & 1)
 133                 NVLockVgaCrtcs(dev_priv->dev, true);
 134 }
 135
 136 static struct nouveau_i2c_chan *
 137 nouveau_connector_ddc_detect(struct drm_connector *connector,
 138                              struct nouveau_encoder **pnv_encoder)
 139 {
 140         struct drm_device *dev = connector->dev;
 141         uint8_t out_buf[] = { 0x0, 0x0}, buf[2];
 142         int ret, flags, i;
 143
 144         struct i2c_msg msgs[] = {
 145                 {
 146                         .addr = 0x50,
 147                         .flags = 0,
 148                         .len = 1,
 149                         .buf = out_buf,
 150                 },
 151                 {
 152                         .addr = 0x50,
 153                         .flags = I2C_M_RD,
 154                         .len = 1,
 155                         .buf = buf,
 156                 }
 157         };
 158
 159         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 160                 struct nouveau_i2c_chan *i2c = NULL;
 161                 struct nouveau_encoder *nv_encoder;
 162                 struct drm_mode_object *obj;
 163                 int id;
 164
 165                 id = connector->encoder_ids[i];
 166                 if (!id)
 167                         break;
 168
 169                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 170                 if (!obj)
 171                         continue;
 172                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 173
 174                 if (nv_encoder->dcb->i2c_index < 0xf)
 175                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 176                 if (!i2c)
 177                         continue;
 178
 179                 nouveau_connector_ddc_prepare(connector, &flags);
 180                 ret = i2c_transfer(&i2c->adapter, msgs, 2);
 181                 nouveau_connector_ddc_finish(connector, flags);
 182
 183                 if (ret == 2) {
 184                         *pnv_encoder = nv_encoder;
 185                         return i2c;
 186                 }
 187         }
 188
 189         return NULL;
 190 }
 191
 192 static void
 193 nouveau_connector_set_encoder(struct drm_connector *connector,
 194                               struct nouveau_encoder *nv_encoder)
 195 {
 196         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 197         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 198         struct drm_device *dev = connector->dev;
 199
 200         if (nv_connector->detected_encoder == nv_encoder)
 201                 return;
 202         nv_connector->detected_encoder = nv_encoder;
 203
 204         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 205             nv_encoder->dcb->type == OUTPUT_TMDS) {
 206                 connector->doublescan_allowed = false;
 207                 connector->interlace_allowed = false;
 208         } else {
 209                 connector->doublescan_allowed = true;
 210                 if (dev_priv->card_type == NV_20 ||
 211                    (dev_priv->card_type == NV_10 &&
 212                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 213                     (dev->pci_device & 0x0ff0) != 0x0150))
 214                         /* HW is broken */
 215                         connector->interlace_allowed = false;
 216                 else
 217                         connector->interlace_allowed = true;
 218         }
 219
 220         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 221                 drm_connector_property_set_value(connector,
 222                         dev->mode_config.dvi_i_subconnector_property,
 223                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 224                         DRM_MODE_SUBCONNECTOR_DVID :
 225                         DRM_MODE_SUBCONNECTOR_DVIA);
 226         }
 227 }
 228
 229 static enum drm_connector_status
 230 nouveau_connector_detect(struct drm_connector *connector)
 231 {
 232         struct drm_device *dev = connector->dev;
 233         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 234         struct nouveau_encoder *nv_encoder = NULL;
 235         struct nouveau_i2c_chan *i2c;
 236         int type, flags;
 237
 238         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 239                 nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 240         if (nv_encoder && nv_connector->native_mode) {
 241 #ifdef CONFIG_ACPI
 242                 if (!nouveau_ignorelid && !acpi_lid_open())
 243                         return connector_status_disconnected;
 244 #endif
 245                 nouveau_connector_set_encoder(connector, nv_encoder);
 246                 return connector_status_connected;
 247         }
 248
 249         /* Cleanup the previous EDID block. */
 250         if (nv_connector->edid) {
 251                 drm_mode_connector_update_edid_property(connector, NULL);
 252                 kfree(nv_connector->edid);
 253                 nv_connector->edid = NULL;
 254         }
 255
 256         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 257         if (i2c) {
 258                 nouveau_connector_ddc_prepare(connector, &flags);
 259                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 260                 nouveau_connector_ddc_finish(connector, flags);
 261                 drm_mode_connector_update_edid_property(connector,
 262                                                         nv_connector->edid);
 263                 if (!nv_connector->edid) {
 264                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 265                                  drm_get_connector_name(connector));
 266                         goto detect_analog;
 267                 }
 268
 269                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 270                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 271                         NV_ERROR(dev, "Detected %s, but failed init\n",
 272                                  drm_get_connector_name(connector));
 273                         return connector_status_disconnected;
 274                 }
 275
 276                 /* Override encoder type for DVI-I based on whether EDID
 277                  * says the display is digital or analog, both use the
 278                  * same i2c channel so the value returned from ddc_detect
 279                  * isn't necessarily correct.
 280                  */
 281                 if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 282                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 283                                 type = OUTPUT_TMDS;
 284                         else
 285                                 type = OUTPUT_ANALOG;
 286
 287                         nv_encoder = find_encoder_by_type(connector, type);
 288                         if (!nv_encoder) {
 289                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 290                                               "but no object!\n", type,
 291                                          drm_get_connector_name(connector));
 292                                 return connector_status_disconnected;
 293                         }
 294                 }
 295
 296                 nouveau_connector_set_encoder(connector, nv_encoder);
 297                 return connector_status_connected;
 298         }
 299
 300 detect_analog:
 301         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 302         if (!nv_encoder)
 303                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 304         if (nv_encoder) {
 305                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 306                 struct drm_encoder_helper_funcs *helper =
 307                                                 encoder->helper_private;
 308
 309                 if (helper->detect(encoder, connector) ==
 310                                                 connector_status_connected) {
 311                         nouveau_connector_set_encoder(connector, nv_encoder);
 312                         return connector_status_connected;
 313                 }
 314
 315         }
 316
 317         return connector_status_disconnected;
 318 }
 319
 320 static void
 321 nouveau_connector_force(struct drm_connector *connector)
 322 {
 323         struct drm_device *dev = connector->dev;
 324         struct nouveau_encoder *nv_encoder;
 325         int type;
 326
 327         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII) {
 328                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 329                         type = OUTPUT_TMDS;
 330                 else
 331                         type = OUTPUT_ANALOG;
 332         } else
 333                 type = OUTPUT_ANY;
 334
 335         nv_encoder = find_encoder_by_type(connector, type);
 336         if (!nv_encoder) {
 337                 NV_ERROR(dev, "can't find encoder to force %s on!\n",
 338                          drm_get_connector_name(connector));
 339                 connector->status = connector_status_disconnected;
 340                 return;
 341         }
 342
 343         nouveau_connector_set_encoder(connector, nv_encoder);
 344 }
 345
 346 static int
 347 nouveau_connector_set_property(struct drm_connector *connector,
 348                                struct drm_property *property, uint64_t value)
 349 {
 350         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 351         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 352         struct drm_device *dev = connector->dev;
 353         int ret;
 354
 355         /* Scaling mode */
 356         if (property == dev->mode_config.scaling_mode_property) {
 357                 struct nouveau_crtc *nv_crtc = NULL;
 358                 bool modeset = false;
 359
 360                 switch (value) {
 361                 case DRM_MODE_SCALE_NONE:
 362                 case DRM_MODE_SCALE_FULLSCREEN:
 363                 case DRM_MODE_SCALE_CENTER:
 364                 case DRM_MODE_SCALE_ASPECT:
 365                         break;
 366                 default:
 367                         return -EINVAL;
 368                 }
 369
 370                 /* LVDS always needs gpu scaling */
 371                 if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS &&
 372                     value == DRM_MODE_SCALE_NONE)
 373                         return -EINVAL;
 374
 375                 /* Changing between GPU and panel scaling requires a full
 376                  * modeset
 377                  */
 378                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 379                     (value == DRM_MODE_SCALE_NONE))
 380                         modeset = true;
 381                 nv_connector->scaling_mode = value;
 382
 383                 if (connector->encoder && connector->encoder->crtc)
 384                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 385                 if (!nv_crtc)
 386                         return 0;
 387
 388                 if (modeset || !nv_crtc->set_scale) {
 389                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 390                                                         &nv_crtc->base.mode,
 391                                                         nv_crtc->base.x,
 392                                                         nv_crtc->base.y, NULL);
 393                         if (!ret)
 394                                 return -EINVAL;
 395                 } else {
 396                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 397                         if (ret)
 398                                 return ret;
 399                 }
 400
 401                 return 0;
 402         }
 403
 404         /* Dithering */
 405         if (property == dev->mode_config.dithering_mode_property) {
 406                 struct nouveau_crtc *nv_crtc = NULL;
 407
 408                 if (value == DRM_MODE_DITHERING_ON)
 409                         nv_connector->use_dithering = true;
 410                 else
 411                         nv_connector->use_dithering = false;
 412
 413                 if (connector->encoder && connector->encoder->crtc)
 414                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 415
 416                 if (!nv_crtc || !nv_crtc->set_dither)
 417                         return 0;
 418
 419                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 420                                            true);
 421         }
 422
 423         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 424                 return get_slave_funcs(nv_encoder)->
 425                         set_property(to_drm_encoder(nv_encoder), connector, property, value);
 426
 427         return -EINVAL;
 428 }
 429
 430 static struct drm_display_mode *
 431 nouveau_connector_native_mode(struct nouveau_connector *connector)
 432 {
 433         struct drm_device *dev = connector->base.dev;
 434         struct drm_display_mode *mode, *largest = NULL;
 435         int high_w = 0, high_h = 0, high_v = 0;
 436
 437         /* Use preferred mode if there is one.. */
 438         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 439                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 440                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 441                         return drm_mode_duplicate(dev, mode);
 442                 }
 443         }
 444
 445         /* Otherwise, take the resolution with the largest width, then height,
 446          * then vertical refresh
 447          */
 448         list_for_each_entry(mode, &connector->base.probed_modes, head) {
 449                 if (mode->hdisplay < high_w)
 450                         continue;
 451
 452                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 453                         continue;
 454
 455                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 456                     mode->vrefresh < high_v)
 457                         continue;
 458
 459                 high_w = mode->hdisplay;
 460                 high_h = mode->vdisplay;
 461                 high_v = mode->vrefresh;
 462                 largest = mode;
 463         }
 464
 465         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 466                       high_w, high_h, high_v);
 467         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 468 }
 469
 470 struct moderec {
 471         int hdisplay;
 472         int vdisplay;
 473 };
 474
 475 static struct moderec scaler_modes[] = {
 476         { 1920, 1200 },
 477         { 1920, 1080 },
 478         { 1680, 1050 },
 479         { 1600, 1200 },
 480         { 1400, 1050 },
 481         { 1280, 1024 },
 482         { 1280, 960 },
 483         { 1152, 864 },
 484         { 1024, 768 },
 485         { 800, 600 },
 486         { 720, 400 },
 487         { 640, 480 },
 488         { 640, 400 },
 489         { 640, 350 },
 490         {}
 491 };
 492
 493 static int
 494 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 495 {
 496         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 497         struct drm_display_mode *native = nv_connector->native_mode, *m;
 498         struct drm_device *dev = connector->dev;
 499         struct moderec *mode = &scaler_modes[0];
 500         int modes = 0;
 501
 502         if (!native)
 503                 return 0;
 504
 505         while (mode->hdisplay) {
 506                 if (mode->hdisplay <= native->hdisplay &&
 507                     mode->vdisplay <= native->vdisplay) {
 508                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 509                                          drm_mode_vrefresh(native), false,
 510                                          false, false);
 511                         if (!m)
 512                                 continue;
 513
 514                         m->type |= DRM_MODE_TYPE_DRIVER;
 515
 516                         drm_mode_probed_add(connector, m);
 517                         modes++;
 518                 }
 519
 520                 mode++;
 521         }
 522
 523         return modes;
 524 }
 525
 526 static int
 527 nouveau_connector_get_modes(struct drm_connector *connector)
 528 {
 529         struct drm_device *dev = connector->dev;
 530         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 531         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 532         int ret = 0;
 533
 534         /* If we're not LVDS, destroy the previous native mode, the attached
 535          * monitor could have changed.
 536          */
 537         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
 538             nv_connector->native_mode) {
 539                 drm_mode_destroy(dev, nv_connector->native_mode);
 540                 nv_connector->native_mode = NULL;
 541         }
 542
 543         if (nv_connector->edid)
 544                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 545
 546         /* Find the native mode if this is a digital panel, if we didn't
 547          * find any modes through DDC previously add the native mode to
 548          * the list of modes.
 549          */
 550         if (!nv_connector->native_mode)
 551                 nv_connector->native_mode =
 552                         nouveau_connector_native_mode(nv_connector);
 553         if (ret == 0 && nv_connector->native_mode) {
 554                 struct drm_display_mode *mode;
 555
 556                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 557                 drm_mode_probed_add(connector, mode);
 558                 ret = 1;
 559         }
 560
 561         if (nv_encoder->dcb->type == OUTPUT_TV)
 562                 ret = get_slave_funcs(nv_encoder)->
 563                         get_modes(to_drm_encoder(nv_encoder), connector);
 564
 565         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 566                 ret += nouveau_connector_scaler_modes_add(connector);
 567
 568         return ret;
 569 }
 570
 571 static int
 572 nouveau_connector_mode_valid(struct drm_connector *connector,
 573                              struct drm_display_mode *mode)
 574 {
 575         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 576         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 577         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 578         unsigned min_clock = 25000, max_clock = min_clock;
 579         unsigned clock = mode->clock;
 580
 581         switch (nv_encoder->dcb->type) {
 582         case OUTPUT_LVDS:
 583                 BUG_ON(!nv_connector->native_mode);
 584                 if (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 585                     mode->vdisplay > nv_connector->native_mode->vdisplay)
 586                         return MODE_PANEL;
 587
 588                 min_clock = 0;
 589                 max_clock = 400000;
 590                 break;
 591         case OUTPUT_TMDS:
 592                 if ((dev_priv->card_type >= NV_50 && !nouveau_duallink) ||
 593                     (dev_priv->card_type < NV_50 &&
 594                      !nv_encoder->dcb->duallink_possible))
 595                         max_clock = 165000;
 596                 else
 597                         max_clock = 330000;
 598                 break;
 599         case OUTPUT_ANALOG:
 600                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 601                 if (!max_clock)
 602                         max_clock = 350000;
 603                 break;
 604         case OUTPUT_TV:
 605                 return get_slave_funcs(nv_encoder)->
 606                         mode_valid(to_drm_encoder(nv_encoder), mode);
 607         case OUTPUT_DP:
 608                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 609                         max_clock = nv_encoder->dp.link_nr * 270000;
 610                 else
 611                         max_clock = nv_encoder->dp.link_nr * 162000;
 612
 613                 clock *= 3;
 614                 break;
 615         }
 616
 617         if (clock < min_clock)
 618                 return MODE_CLOCK_LOW;
 619
 620         if (clock > max_clock)
 621                 return MODE_CLOCK_HIGH;
 622
 623         return MODE_OK;
 624 }
 625
 626 static struct drm_encoder *
 627 nouveau_connector_best_encoder(struct drm_connector *connector)
 628 {
 629         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 630
 631         if (nv_connector->detected_encoder)
 632                 return to_drm_encoder(nv_connector->detected_encoder);
 633
 634         return NULL;
 635 }
 636
 637 static const struct drm_connector_helper_funcs
 638 nouveau_connector_helper_funcs = {
 639         .get_modes = nouveau_connector_get_modes,
 640         .mode_valid = nouveau_connector_mode_valid,
 641         .best_encoder = nouveau_connector_best_encoder,
 642 };
 643
 644 static const struct drm_connector_funcs
 645 nouveau_connector_funcs = {
 646         .dpms = drm_helper_connector_dpms,
 647         .save = NULL,
 648         .restore = NULL,
 649         .detect = nouveau_connector_detect,
 650         .destroy = nouveau_connector_destroy,
 651         .fill_modes = drm_helper_probe_single_connector_modes,
 652         .set_property = nouveau_connector_set_property,
 653         .force = nouveau_connector_force
 654 };
 655
 656 static int
 657 nouveau_connector_create_lvds(struct drm_device *dev,
 658                               struct drm_connector *connector)
 659 {
 660         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 661         struct drm_nouveau_private *dev_priv = dev->dev_private;
 662         struct nouveau_i2c_chan *i2c = NULL;
 663         struct nouveau_encoder *nv_encoder;
 664         struct drm_display_mode native, *mode, *temp;
 665         bool dummy, if_is_24bit = false;
 666         int ret, flags;
 667
 668         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 669         if (!nv_encoder)
 670                 return -ENODEV;
 671
 672         ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &if_is_24bit);
 673         if (ret) {
 674                 NV_ERROR(dev, "Error parsing LVDS table, disabling LVDS\n");
 675                 return ret;
 676         }
 677         nv_connector->use_dithering = !if_is_24bit;
 678
 679         /* Firstly try getting EDID over DDC, if allowed and I2C channel
 680          * is available.
 681          */
 682         if (!dev_priv->VBIOS.pub.fp_no_ddc && nv_encoder->dcb->i2c_index < 0xf)
 683                 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 684
 685         if (i2c) {
 686                 nouveau_connector_ddc_prepare(connector, &flags);
 687                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 688                 nouveau_connector_ddc_finish(connector, flags);
 689         }
 690
 691         /* If no EDID found above, and the VBIOS indicates a hardcoded
 692          * modeline is avalilable for the panel, set it as the panel's
 693          * native mode and exit.
 694          */
 695         if (!nv_connector->edid && nouveau_bios_fp_mode(dev, &native) &&
 696              (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 697               dev_priv->VBIOS.pub.fp_no_ddc)) {
 698                 nv_connector->native_mode = drm_mode_duplicate(dev, &native);
 699                 goto out;
 700         }
 701
 702         /* Still nothing, some VBIOS images have a hardcoded EDID block
 703          * stored for the panel stored in them.
 704          */
 705         if (!nv_connector->edid && !nv_connector->native_mode &&
 706             !dev_priv->VBIOS.pub.fp_no_ddc) {
 707                 struct edid *edid =
 708                         (struct edid *)nouveau_bios_embedded_edid(dev);
 709                 if (edid) {
 710                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 711                         *(nv_connector->edid) = *edid;
 712                 }
 713         }
 714
 715         if (!nv_connector->edid)
 716                 goto out;
 717
 718         /* We didn't find/use a panel mode from the VBIOS, so parse the EDID
 719          * block and look for the preferred mode there.
 720          */
 721         ret = drm_add_edid_modes(connector, nv_connector->edid);
 722         if (ret == 0)
 723                 goto out;
 724         nv_connector->detected_encoder = nv_encoder;
 725         nv_connector->native_mode = nouveau_connector_native_mode(nv_connector);
 726         list_for_each_entry_safe(mode, temp, &connector->probed_modes, head)
 727                 drm_mode_remove(connector, mode);
 728
 729 out:
 730         if (!nv_connector->native_mode) {
 731                 NV_ERROR(dev, "LVDS present in DCB table, but couldn't "
 732                               "determine its native mode.  Disabling.\n");
 733                 return -ENODEV;
 734         }
 735
 736         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 737         return 0;
 738 }
 739
 740 int
 741 nouveau_connector_create(struct drm_device *dev, int index, int type)
 742 {
 743         struct drm_nouveau_private *dev_priv = dev->dev_private;
 744         struct nouveau_connector *nv_connector = NULL;
 745         struct drm_connector *connector;
 746         struct drm_encoder *encoder;
 747         int ret;
 748
 749         NV_DEBUG_KMS(dev, "\n");
 750
 751         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 752         if (!nv_connector)
 753                 return -ENOMEM;
 754         nv_connector->dcb = nouveau_bios_connector_entry(dev, index);
 755         connector = &nv_connector->base;
 756
 757         switch (type) {
 758         case DRM_MODE_CONNECTOR_VGA:
 759                 NV_INFO(dev, "Detected a VGA connector\n");
 760                 break;
 761         case DRM_MODE_CONNECTOR_DVID:
 762                 NV_INFO(dev, "Detected a DVI-D connector\n");
 763                 break;
 764         case DRM_MODE_CONNECTOR_DVII:
 765                 NV_INFO(dev, "Detected a DVI-I connector\n");
 766                 break;
 767         case DRM_MODE_CONNECTOR_LVDS:
 768                 NV_INFO(dev, "Detected a LVDS connector\n");
 769                 break;
 770         case DRM_MODE_CONNECTOR_TV:
 771                 NV_INFO(dev, "Detected a TV connector\n");
 772                 break;
 773         case DRM_MODE_CONNECTOR_DisplayPort:
 774                 NV_INFO(dev, "Detected a DisplayPort connector\n");
 775                 break;
 776         default:
 777                 NV_ERROR(dev, "Unknown connector, this is not good.\n");
 778                 break;
 779         }
 780
 781         /* defaults, will get overridden in detect() */
 782         connector->interlace_allowed = false;
 783         connector->doublescan_allowed = false;
 784
 785         drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
 786         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 787
 788         /* Init DVI-I specific properties */
 789         if (type == DRM_MODE_CONNECTOR_DVII) {
 790                 drm_mode_create_dvi_i_properties(dev);
 791                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 792                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 793         }
 794
 795         if (type != DRM_MODE_CONNECTOR_LVDS)
 796                 nv_connector->use_dithering = false;
 797
 798         if (type == DRM_MODE_CONNECTOR_DVID ||
 799             type == DRM_MODE_CONNECTOR_DVII ||
 800             type == DRM_MODE_CONNECTOR_LVDS ||
 801             type == DRM_MODE_CONNECTOR_DisplayPort) {
 802                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 803
 804                 drm_connector_attach_property(connector, dev->mode_config.scaling_mode_property,
 805                                               nv_connector->scaling_mode);
 806                 drm_connector_attach_property(connector, dev->mode_config.dithering_mode_property,
 807                                               nv_connector->use_dithering ? DRM_MODE_DITHERING_ON
 808                                               : DRM_MODE_DITHERING_OFF);
 809
 810         } else {
 811                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 812
 813                 if (type == DRM_MODE_CONNECTOR_VGA  &&
 814                                 dev_priv->card_type >= NV_50) {
 815                         drm_connector_attach_property(connector,
 816                                         dev->mode_config.scaling_mode_property,
 817                                         nv_connector->scaling_mode);
 818                 }
 819         }
 820
 821         /* attach encoders */
 822         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 823                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 824
 825                 if (nv_encoder->dcb->connector != index)
 826                         continue;
 827
 828                 if (get_slave_funcs(nv_encoder))
 829                         get_slave_funcs(nv_encoder)->create_resources(encoder, connector);
 830
 831                 drm_mode_connector_attach_encoder(connector, encoder);
 832         }
 833
 834         drm_sysfs_connector_add(connector);
 835
 836         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS) {
 837                 ret = nouveau_connector_create_lvds(dev, connector);
 838                 if (ret) {
 839                         connector->funcs->destroy(connector);
 840                         return ret;
 841                 }
 842         }
 843
 844         return 0;
 845 }