SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 drm_connector *connector)
 436 {
 437         struct drm_connector_helper_funcs *helper = connector->helper_private;
 438         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 439         struct drm_device *dev = connector->dev;
 440         struct drm_display_mode *mode, *largest = NULL;
 441         int high_w = 0, high_h = 0, high_v = 0;
 442
 443         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 444                 if (helper->mode_valid(connector, mode) != MODE_OK)
 445                         continue;
 446
 447                 /* Use preferred mode if there is one.. */
 448                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 449                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 450                         return drm_mode_duplicate(dev, mode);
 451                 }
 452
 453                 /* Otherwise, take the resolution with the largest width, then
 454                  * height, then vertical refresh
 455                  */
 456                 if (mode->hdisplay < high_w)
 457                         continue;
 458
 459                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 460                         continue;
 461
 462                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 463                     mode->vrefresh < high_v)
 464                         continue;
 465
 466                 high_w = mode->hdisplay;
 467                 high_h = mode->vdisplay;
 468                 high_v = mode->vrefresh;
 469                 largest = mode;
 470         }
 471
 472         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 473                       high_w, high_h, high_v);
 474         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 475 }
 476
 477 struct moderec {
 478         int hdisplay;
 479         int vdisplay;
 480 };
 481
 482 static struct moderec scaler_modes[] = {
 483         { 1920, 1200 },
 484         { 1920, 1080 },
 485         { 1680, 1050 },
 486         { 1600, 1200 },
 487         { 1400, 1050 },
 488         { 1280, 1024 },
 489         { 1280, 960 },
 490         { 1152, 864 },
 491         { 1024, 768 },
 492         { 800, 600 },
 493         { 720, 400 },
 494         { 640, 480 },
 495         { 640, 400 },
 496         { 640, 350 },
 497         {}
 498 };
 499
 500 static int
 501 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 502 {
 503         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 504         struct drm_display_mode *native = nv_connector->native_mode, *m;
 505         struct drm_device *dev = connector->dev;
 506         struct moderec *mode = &scaler_modes[0];
 507         int modes = 0;
 508
 509         if (!native)
 510                 return 0;
 511
 512         while (mode->hdisplay) {
 513                 if (mode->hdisplay <= native->hdisplay &&
 514                     mode->vdisplay <= native->vdisplay) {
 515                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 516                                          drm_mode_vrefresh(native), false,
 517                                          false, false);
 518                         if (!m)
 519                                 continue;
 520
 521                         m->type |= DRM_MODE_TYPE_DRIVER;
 522
 523                         drm_mode_probed_add(connector, m);
 524                         modes++;
 525                 }
 526
 527                 mode++;
 528         }
 529
 530         return modes;
 531 }
 532
 533 static int
 534 nouveau_connector_get_modes(struct drm_connector *connector)
 535 {
 536         struct drm_device *dev = connector->dev;
 537         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 538         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 539         int ret = 0;
 540
 541         /* If we're not LVDS, destroy the previous native mode, the attached
 542          * monitor could have changed.
 543          */
 544         if (nv_connector->dcb->type != DCB_CONNECTOR_LVDS &&
 545             nv_connector->native_mode) {
 546                 drm_mode_destroy(dev, nv_connector->native_mode);
 547                 nv_connector->native_mode = NULL;
 548         }
 549
 550         if (nv_connector->edid)
 551                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 552
 553         /* Find the native mode if this is a digital panel, if we didn't
 554          * find any modes through DDC previously add the native mode to
 555          * the list of modes.
 556          */
 557         if (!nv_connector->native_mode)
 558                 nv_connector->native_mode =
 559                         nouveau_connector_native_mode(connector);
 560         if (ret == 0 && nv_connector->native_mode) {
 561                 struct drm_display_mode *mode;
 562
 563                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 564                 drm_mode_probed_add(connector, mode);
 565                 ret = 1;
 566         }
 567
 568         if (nv_encoder->dcb->type == OUTPUT_TV)
 569                 ret = get_slave_funcs(nv_encoder)->
 570                         get_modes(to_drm_encoder(nv_encoder), connector);
 571
 572         if (nv_encoder->dcb->type == OUTPUT_LVDS)
 573                 ret += nouveau_connector_scaler_modes_add(connector);
 574
 575         return ret;
 576 }
 577
 578 static int
 579 nouveau_connector_mode_valid(struct drm_connector *connector,
 580                              struct drm_display_mode *mode)
 581 {
 582         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 583         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 584         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 585         unsigned min_clock = 25000, max_clock = min_clock;
 586         unsigned clock = mode->clock;
 587
 588         switch (nv_encoder->dcb->type) {
 589         case OUTPUT_LVDS:
 590                 if (nv_connector->native_mode &&
 591                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 592                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 593                         return MODE_PANEL;
 594
 595                 min_clock = 0;
 596                 max_clock = 400000;
 597                 break;
 598         case OUTPUT_TMDS:
 599                 if ((dev_priv->card_type >= NV_50 && !nouveau_duallink) ||
 600                     !nv_encoder->dcb->duallink_possible)
 601                         max_clock = 165000;
 602                 else
 603                         max_clock = 330000;
 604                 break;
 605         case OUTPUT_ANALOG:
 606                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 607                 if (!max_clock)
 608                         max_clock = 350000;
 609                 break;
 610         case OUTPUT_TV:
 611                 return get_slave_funcs(nv_encoder)->
 612                         mode_valid(to_drm_encoder(nv_encoder), mode);
 613         case OUTPUT_DP:
 614                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 615                         max_clock = nv_encoder->dp.link_nr * 270000;
 616                 else
 617                         max_clock = nv_encoder->dp.link_nr * 162000;
 618
 619                 clock *= 3;
 620                 break;
 621         default:
 622                 BUG_ON(1);
 623                 return MODE_BAD;
 624         }
 625
 626         if (clock < min_clock)
 627                 return MODE_CLOCK_LOW;
 628
 629         if (clock > max_clock)
 630                 return MODE_CLOCK_HIGH;
 631
 632         return MODE_OK;
 633 }
 634
 635 static struct drm_encoder *
 636 nouveau_connector_best_encoder(struct drm_connector *connector)
 637 {
 638         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 639
 640         if (nv_connector->detected_encoder)
 641                 return to_drm_encoder(nv_connector->detected_encoder);
 642
 643         return NULL;
 644 }
 645
 646 static const struct drm_connector_helper_funcs
 647 nouveau_connector_helper_funcs = {
 648         .get_modes = nouveau_connector_get_modes,
 649         .mode_valid = nouveau_connector_mode_valid,
 650         .best_encoder = nouveau_connector_best_encoder,
 651 };
 652
 653 static const struct drm_connector_funcs
 654 nouveau_connector_funcs = {
 655         .dpms = drm_helper_connector_dpms,
 656         .save = NULL,
 657         .restore = NULL,
 658         .detect = nouveau_connector_detect,
 659         .destroy = nouveau_connector_destroy,
 660         .fill_modes = drm_helper_probe_single_connector_modes,
 661         .set_property = nouveau_connector_set_property,
 662         .force = nouveau_connector_force
 663 };
 664
 665 static int
 666 nouveau_connector_create_lvds(struct drm_device *dev,
 667                               struct drm_connector *connector)
 668 {
 669         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 670         struct drm_nouveau_private *dev_priv = dev->dev_private;
 671         struct nouveau_i2c_chan *i2c = NULL;
 672         struct nouveau_encoder *nv_encoder;
 673         struct drm_display_mode native, *mode, *temp;
 674         bool dummy, if_is_24bit = false;
 675         int ret, flags;
 676
 677         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 678         if (!nv_encoder)
 679                 return -ENODEV;
 680
 681         ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &if_is_24bit);
 682         if (ret) {
 683                 NV_ERROR(dev, "Error parsing LVDS table, disabling LVDS\n");
 684                 return ret;
 685         }
 686         nv_connector->use_dithering = !if_is_24bit;
 687
 688         /* Firstly try getting EDID over DDC, if allowed and I2C channel
 689          * is available.
 690          */
 691         if (!dev_priv->vbios.fp_no_ddc && nv_encoder->dcb->i2c_index < 0xf)
 692                 i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 693
 694         if (i2c) {
 695                 nouveau_connector_ddc_prepare(connector, &flags);
 696                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 697                 nouveau_connector_ddc_finish(connector, flags);
 698         }
 699
 700         /* If no EDID found above, and the VBIOS indicates a hardcoded
 701          * modeline is avalilable for the panel, set it as the panel's
 702          * native mode and exit.
 703          */
 704         if (!nv_connector->edid && nouveau_bios_fp_mode(dev, &native) &&
 705              (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 706               dev_priv->vbios.fp_no_ddc)) {
 707                 nv_connector->native_mode = drm_mode_duplicate(dev, &native);
 708                 goto out;
 709         }
 710
 711         /* Still nothing, some VBIOS images have a hardcoded EDID block
 712          * stored for the panel stored in them.
 713          */
 714         if (!nv_connector->edid && !nv_connector->native_mode &&
 715             !dev_priv->vbios.fp_no_ddc) {
 716                 struct edid *edid =
 717                         (struct edid *)nouveau_bios_embedded_edid(dev);
 718                 if (edid) {
 719                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 720                         *(nv_connector->edid) = *edid;
 721                 }
 722         }
 723
 724         if (!nv_connector->edid)
 725                 goto out;
 726
 727         /* We didn't find/use a panel mode from the VBIOS, so parse the EDID
 728          * block and look for the preferred mode there.
 729          */
 730         ret = drm_add_edid_modes(connector, nv_connector->edid);
 731         if (ret == 0)
 732                 goto out;
 733         nv_connector->detected_encoder = nv_encoder;
 734         nv_connector->native_mode = nouveau_connector_native_mode(connector);
 735         list_for_each_entry_safe(mode, temp, &connector->probed_modes, head)
 736                 drm_mode_remove(connector, mode);
 737
 738 out:
 739         if (!nv_connector->native_mode) {
 740                 NV_ERROR(dev, "LVDS present in DCB table, but couldn't "
 741                               "determine its native mode.  Disabling.\n");
 742                 return -ENODEV;
 743         }
 744
 745         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 746         return 0;
 747 }
 748
 749 int
 750 nouveau_connector_create(struct drm_device *dev,
 751                          struct dcb_connector_table_entry *dcb)
 752 {
 753         struct drm_nouveau_private *dev_priv = dev->dev_private;
 754         struct nouveau_connector *nv_connector = NULL;
 755         struct drm_connector *connector;
 756         struct drm_encoder *encoder;
 757         int ret, type;
 758
 759         NV_DEBUG_KMS(dev, "\n");
 760
 761         switch (dcb->type) {
 762         case DCB_CONNECTOR_NONE:
 763                 return 0;
 764         case DCB_CONNECTOR_VGA:
 765                 NV_INFO(dev, "Detected a VGA connector\n");
 766                 type = DRM_MODE_CONNECTOR_VGA;
 767                 break;
 768         case DCB_CONNECTOR_TV_0:
 769         case DCB_CONNECTOR_TV_1:
 770         case DCB_CONNECTOR_TV_3:
 771                 NV_INFO(dev, "Detected a TV connector\n");
 772                 type = DRM_MODE_CONNECTOR_TV;
 773                 break;
 774         case DCB_CONNECTOR_DVI_I:
 775                 NV_INFO(dev, "Detected a DVI-I connector\n");
 776                 type = DRM_MODE_CONNECTOR_DVII;
 777                 break;
 778         case DCB_CONNECTOR_DVI_D:
 779                 NV_INFO(dev, "Detected a DVI-D connector\n");
 780                 type = DRM_MODE_CONNECTOR_DVID;
 781                 break;
 782         case DCB_CONNECTOR_HDMI_0:
 783         case DCB_CONNECTOR_HDMI_1:
 784                 NV_INFO(dev, "Detected a HDMI connector\n");
 785                 type = DRM_MODE_CONNECTOR_HDMIA;
 786                 break;
 787         case DCB_CONNECTOR_LVDS:
 788                 NV_INFO(dev, "Detected a LVDS connector\n");
 789                 type = DRM_MODE_CONNECTOR_LVDS;
 790                 break;
 791         case DCB_CONNECTOR_DP:
 792                 NV_INFO(dev, "Detected a DisplayPort connector\n");
 793                 type = DRM_MODE_CONNECTOR_DisplayPort;
 794                 break;
 795         case DCB_CONNECTOR_eDP:
 796                 NV_INFO(dev, "Detected an eDP connector\n");
 797                 type = DRM_MODE_CONNECTOR_eDP;
 798                 break;
 799         default:
 800                 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
 801                 return -EINVAL;
 802         }
 803
 804         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 805         if (!nv_connector)
 806                 return -ENOMEM;
 807         nv_connector->dcb = dcb;
 808         connector = &nv_connector->base;
 809
 810         /* defaults, will get overridden in detect() */
 811         connector->interlace_allowed = false;
 812         connector->doublescan_allowed = false;
 813
 814         drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
 815         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 816
 817         /* attach encoders */
 818         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 819                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 820
 821                 if (nv_encoder->dcb->connector != dcb->index)
 822                         continue;
 823
 824                 if (get_slave_funcs(nv_encoder))
 825                         get_slave_funcs(nv_encoder)->create_resources(encoder, connector);
 826
 827                 drm_mode_connector_attach_encoder(connector, encoder);
 828         }
 829
 830         if (!connector->encoder_ids[0]) {
 831                 NV_WARN(dev, "  no encoders, ignoring\n");
 832                 drm_connector_cleanup(connector);
 833                 kfree(connector);
 834                 return 0;
 835         }
 836
 837         /* Init DVI-I specific properties */
 838         if (dcb->type == DCB_CONNECTOR_DVI_I) {
 839                 drm_mode_create_dvi_i_properties(dev);
 840                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 841                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 842         }
 843
 844         if (dcb->type != DCB_CONNECTOR_LVDS)
 845                 nv_connector->use_dithering = false;
 846
 847         switch (dcb->type) {
 848         case DCB_CONNECTOR_VGA:
 849                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 850                 if (dev_priv->card_type >= NV_50) {
 851                         drm_connector_attach_property(connector,
 852                                         dev->mode_config.scaling_mode_property,
 853                                         nv_connector->scaling_mode);
 854                 }
 855                 /* fall-through */
 856         case DCB_CONNECTOR_TV_0:
 857         case DCB_CONNECTOR_TV_1:
 858         case DCB_CONNECTOR_TV_3:
 859                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 860                 break;
 861         case DCB_CONNECTOR_DP:
 862         case DCB_CONNECTOR_eDP:
 863         case DCB_CONNECTOR_HDMI_0:
 864         case DCB_CONNECTOR_HDMI_1:
 865         case DCB_CONNECTOR_DVI_I:
 866         case DCB_CONNECTOR_DVI_D:
 867                 if (dev_priv->card_type >= NV_50)
 868                         connector->polled = DRM_CONNECTOR_POLL_HPD;
 869                 else
 870                         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 871                 /* fall-through */
 872         default:
 873                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 874
 875                 drm_connector_attach_property(connector,
 876                                 dev->mode_config.scaling_mode_property,
 877                                 nv_connector->scaling_mode);
 878                 drm_connector_attach_property(connector,
 879                                 dev->mode_config.dithering_mode_property,
 880                                 nv_connector->use_dithering ?
 881                                 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 882                 break;
 883         }
 884
 885         drm_sysfs_connector_add(connector);
 886
 887         if (dcb->type == DCB_CONNECTOR_LVDS) {
 888                 ret = nouveau_connector_create_lvds(dev, connector);
 889                 if (ret) {
 890                         connector->funcs->destroy(connector);
 891                         return ret;
 892                 }
 893         }
 894
 895         return 0;
 896 }