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 void nouveau_connector_hotplug(void *, int);
  41
  42 static struct nouveau_encoder *
  43 find_encoder_by_type(struct drm_connector *connector, int type)
  44 {
  45         struct drm_device *dev = connector->dev;
  46         struct nouveau_encoder *nv_encoder;
  47         struct drm_mode_object *obj;
  48         int i, id;
  49
  50         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  51                 id = connector->encoder_ids[i];
  52                 if (!id)
  53                         break;
  54
  55                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  56                 if (!obj)
  57                         continue;
  58                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  59
  60                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  61                         return nv_encoder;
  62         }
  63
  64         return NULL;
  65 }
  66
  67 struct nouveau_connector *
  68 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  69 {
  70         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  71         struct drm_connector *drm_connector;
  72
  73         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  74                 if (drm_connector->encoder == to_drm_encoder(encoder))
  75                         return nouveau_connector(drm_connector);
  76         }
  77
  78         return NULL;
  79 }
  80
  81 /*TODO: This could use improvement, and learn to handle the fixed
  82  *      BIOS tables etc.  It's fine currently, for its only user.
  83  */
  84 int
  85 nouveau_connector_bpp(struct drm_connector *connector)
  86 {
  87         struct nouveau_connector *nv_connector = nouveau_connector(connector);
  88
  89         if (nv_connector->edid && nv_connector->edid->revision >= 4) {
  90                 u8 bpc = ((nv_connector->edid->input & 0x70) >> 3) + 4;
  91                 if (bpc > 4)
  92                         return bpc;
  93         }
  94
  95         return 18;
  96 }
  97
  98 static void
  99 nouveau_connector_destroy(struct drm_connector *connector)
 100 {
 101         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 102         struct drm_nouveau_private *dev_priv;
 103         struct nouveau_gpio_engine *pgpio;
 104         struct drm_device *dev;
 105
 106         if (!nv_connector)
 107                 return;
 108
 109         dev = nv_connector->base.dev;
 110         dev_priv = dev->dev_private;
 111         NV_DEBUG_KMS(dev, "\n");
 112
 113         pgpio = &dev_priv->engine.gpio;
 114         if (pgpio->irq_unregister) {
 115                 pgpio->irq_unregister(dev, nv_connector->dcb->gpio_tag,
 116                                       nouveau_connector_hotplug, connector);
 117         }
 118
 119         kfree(nv_connector->edid);
 120         drm_sysfs_connector_remove(connector);
 121         drm_connector_cleanup(connector);
 122         kfree(connector);
 123 }
 124
 125 static struct nouveau_i2c_chan *
 126 nouveau_connector_ddc_detect(struct drm_connector *connector,
 127                              struct nouveau_encoder **pnv_encoder)
 128 {
 129         struct drm_device *dev = connector->dev;
 130         int i;
 131
 132         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 133                 struct nouveau_i2c_chan *i2c = NULL;
 134                 struct nouveau_encoder *nv_encoder;
 135                 struct drm_mode_object *obj;
 136                 int id;
 137
 138                 id = connector->encoder_ids[i];
 139                 if (!id)
 140                         break;
 141
 142                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 143                 if (!obj)
 144                         continue;
 145                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 146
 147                 if (nv_encoder->dcb->i2c_index < 0xf)
 148                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 149
 150                 if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
 151                         *pnv_encoder = nv_encoder;
 152                         return i2c;
 153                 }
 154         }
 155
 156         return NULL;
 157 }
 158
 159 static struct nouveau_encoder *
 160 nouveau_connector_of_detect(struct drm_connector *connector)
 161 {
 162 #ifdef __powerpc__
 163         struct drm_device *dev = connector->dev;
 164         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 165         struct nouveau_encoder *nv_encoder;
 166         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 167
 168         if (!dn ||
 169             !((nv_encoder = find_encoder_by_type(connector, OUTPUT_TMDS)) ||
 170               (nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG))))
 171                 return NULL;
 172
 173         for_each_child_of_node(dn, cn) {
 174                 const char *name = of_get_property(cn, "name", NULL);
 175                 const void *edid = of_get_property(cn, "EDID", NULL);
 176                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 177
 178                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 179                         nv_connector->edid =
 180                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 181                         of_node_put(cn);
 182                         return nv_encoder;
 183                 }
 184         }
 185 #endif
 186         return NULL;
 187 }
 188
 189 static void
 190 nouveau_connector_set_encoder(struct drm_connector *connector,
 191                               struct nouveau_encoder *nv_encoder)
 192 {
 193         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 194         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 195         struct drm_device *dev = connector->dev;
 196
 197         if (nv_connector->detected_encoder == nv_encoder)
 198                 return;
 199         nv_connector->detected_encoder = nv_encoder;
 200
 201         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 202             nv_encoder->dcb->type == OUTPUT_TMDS) {
 203                 connector->doublescan_allowed = false;
 204                 connector->interlace_allowed = false;
 205         } else {
 206                 connector->doublescan_allowed = true;
 207                 if (dev_priv->card_type == NV_20 ||
 208                    (dev_priv->card_type == NV_10 &&
 209                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 210                     (dev->pci_device & 0x0ff0) != 0x0150))
 211                         /* HW is broken */
 212                         connector->interlace_allowed = false;
 213                 else
 214                         connector->interlace_allowed = true;
 215         }
 216
 217         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 218                 drm_connector_property_set_value(connector,
 219                         dev->mode_config.dvi_i_subconnector_property,
 220                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 221                         DRM_MODE_SUBCONNECTOR_DVID :
 222                         DRM_MODE_SUBCONNECTOR_DVIA);
 223         }
 224 }
 225
 226 static enum drm_connector_status
 227 nouveau_connector_detect(struct drm_connector *connector, bool force)
 228 {
 229         struct drm_device *dev = connector->dev;
 230         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 231         struct nouveau_encoder *nv_encoder = NULL;
 232         struct nouveau_i2c_chan *i2c;
 233         int type;
 234
 235         /* Cleanup the previous EDID block. */
 236         if (nv_connector->edid) {
 237                 drm_mode_connector_update_edid_property(connector, NULL);
 238                 kfree(nv_connector->edid);
 239                 nv_connector->edid = NULL;
 240         }
 241
 242         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 243         if (i2c) {
 244                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 245                 drm_mode_connector_update_edid_property(connector,
 246                                                         nv_connector->edid);
 247                 if (!nv_connector->edid) {
 248                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 249                                  drm_get_connector_name(connector));
 250                         goto detect_analog;
 251                 }
 252
 253                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 254                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 255                         NV_ERROR(dev, "Detected %s, but failed init\n",
 256                                  drm_get_connector_name(connector));
 257                         return connector_status_disconnected;
 258                 }
 259
 260                 /* Override encoder type for DVI-I based on whether EDID
 261                  * says the display is digital or analog, both use the
 262                  * same i2c channel so the value returned from ddc_detect
 263                  * isn't necessarily correct.
 264                  */
 265                 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 266                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 267                                 type = OUTPUT_TMDS;
 268                         else
 269                                 type = OUTPUT_ANALOG;
 270
 271                         nv_encoder = find_encoder_by_type(connector, type);
 272                         if (!nv_encoder) {
 273                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 274                                               "but no object!\n", type,
 275                                          drm_get_connector_name(connector));
 276                                 return connector_status_disconnected;
 277                         }
 278                 }
 279
 280                 nouveau_connector_set_encoder(connector, nv_encoder);
 281                 return connector_status_connected;
 282         }
 283
 284         nv_encoder = nouveau_connector_of_detect(connector);
 285         if (nv_encoder) {
 286                 nouveau_connector_set_encoder(connector, nv_encoder);
 287                 return connector_status_connected;
 288         }
 289
 290 detect_analog:
 291         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 292         if (!nv_encoder && !nouveau_tv_disable)
 293                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 294         if (nv_encoder && force) {
 295                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 296                 struct drm_encoder_helper_funcs *helper =
 297                                                 encoder->helper_private;
 298
 299                 if (helper->detect(encoder, connector) ==
 300                                                 connector_status_connected) {
 301                         nouveau_connector_set_encoder(connector, nv_encoder);
 302                         return connector_status_connected;
 303                 }
 304
 305         }
 306
 307         return connector_status_disconnected;
 308 }
 309
 310 static enum drm_connector_status
 311 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 312 {
 313         struct drm_device *dev = connector->dev;
 314         struct drm_nouveau_private *dev_priv = dev->dev_private;
 315         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 316         struct nouveau_encoder *nv_encoder = NULL;
 317         enum drm_connector_status status = connector_status_disconnected;
 318
 319         /* Cleanup the previous EDID block. */
 320         if (nv_connector->edid) {
 321                 drm_mode_connector_update_edid_property(connector, NULL);
 322                 kfree(nv_connector->edid);
 323                 nv_connector->edid = NULL;
 324         }
 325
 326         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 327         if (!nv_encoder)
 328                 return connector_status_disconnected;
 329
 330         /* Try retrieving EDID via DDC */
 331         if (!dev_priv->vbios.fp_no_ddc) {
 332                 status = nouveau_connector_detect(connector, force);
 333                 if (status == connector_status_connected)
 334                         goto out;
 335         }
 336
 337         /* On some laptops (Sony, i'm looking at you) there appears to
 338          * be no direct way of accessing the panel's EDID.  The only
 339          * option available to us appears to be to ask ACPI for help..
 340          *
 341          * It's important this check's before trying straps, one of the
 342          * said manufacturer's laptops are configured in such a way
 343          * the nouveau decides an entry in the VBIOS FP mode table is
 344          * valid - it's not (rh#613284)
 345          */
 346         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 347                 if (!nouveau_acpi_edid(dev, connector)) {
 348                         status = connector_status_connected;
 349                         goto out;
 350                 }
 351         }
 352
 353         /* If no EDID found above, and the VBIOS indicates a hardcoded
 354          * modeline is avalilable for the panel, set it as the panel's
 355          * native mode and exit.
 356          */
 357         if (nouveau_bios_fp_mode(dev, NULL) && (dev_priv->vbios.fp_no_ddc ||
 358             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 359                 status = connector_status_connected;
 360                 goto out;
 361         }
 362
 363         /* Still nothing, some VBIOS images have a hardcoded EDID block
 364          * stored for the panel stored in them.
 365          */
 366         if (!dev_priv->vbios.fp_no_ddc) {
 367                 struct edid *edid =
 368                         (struct edid *)nouveau_bios_embedded_edid(dev);
 369                 if (edid) {
 370                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 371                         *(nv_connector->edid) = *edid;
 372                         status = connector_status_connected;
 373                 }
 374         }
 375
 376 out:
 377 #if defined(CONFIG_ACPI_BUTTON) || \
 378         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 379         if (status == connector_status_connected &&
 380             !nouveau_ignorelid && !acpi_lid_open())
 381                 status = connector_status_unknown;
 382 #endif
 383
 384         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 385         nouveau_connector_set_encoder(connector, nv_encoder);
 386         return status;
 387 }
 388
 389 static void
 390 nouveau_connector_force(struct drm_connector *connector)
 391 {
 392         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 393         struct nouveau_encoder *nv_encoder;
 394         int type;
 395
 396         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 397                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 398                         type = OUTPUT_TMDS;
 399                 else
 400                         type = OUTPUT_ANALOG;
 401         } else
 402                 type = OUTPUT_ANY;
 403
 404         nv_encoder = find_encoder_by_type(connector, type);
 405         if (!nv_encoder) {
 406                 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
 407                          drm_get_connector_name(connector));
 408                 connector->status = connector_status_disconnected;
 409                 return;
 410         }
 411
 412         nouveau_connector_set_encoder(connector, nv_encoder);
 413 }
 414
 415 static int
 416 nouveau_connector_set_property(struct drm_connector *connector,
 417                                struct drm_property *property, uint64_t value)
 418 {
 419         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 420         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 421         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 422         struct drm_device *dev = connector->dev;
 423         int ret;
 424
 425         /* Scaling mode */
 426         if (property == dev->mode_config.scaling_mode_property) {
 427                 struct nouveau_crtc *nv_crtc = NULL;
 428                 bool modeset = false;
 429
 430                 switch (value) {
 431                 case DRM_MODE_SCALE_NONE:
 432                 case DRM_MODE_SCALE_FULLSCREEN:
 433                 case DRM_MODE_SCALE_CENTER:
 434                 case DRM_MODE_SCALE_ASPECT:
 435                         break;
 436                 default:
 437                         return -EINVAL;
 438                 }
 439
 440                 /* LVDS always needs gpu scaling */
 441                 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
 442                     value == DRM_MODE_SCALE_NONE)
 443                         return -EINVAL;
 444
 445                 /* Changing between GPU and panel scaling requires a full
 446                  * modeset
 447                  */
 448                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 449                     (value == DRM_MODE_SCALE_NONE))
 450                         modeset = true;
 451                 nv_connector->scaling_mode = value;
 452
 453                 if (connector->encoder && connector->encoder->crtc)
 454                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 455                 if (!nv_crtc)
 456                         return 0;
 457
 458                 if (modeset || !nv_crtc->set_scale) {
 459                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 460                                                         &nv_crtc->base.mode,
 461                                                         nv_crtc->base.x,
 462                                                         nv_crtc->base.y, NULL);
 463                         if (!ret)
 464                                 return -EINVAL;
 465                 } else {
 466                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 467                         if (ret)
 468                                 return ret;
 469                 }
 470
 471                 return 0;
 472         }
 473
 474         /* Dithering */
 475         if (property == dev->mode_config.dithering_mode_property) {
 476                 struct nouveau_crtc *nv_crtc = NULL;
 477
 478                 if (value == DRM_MODE_DITHERING_ON)
 479                         nv_connector->use_dithering = true;
 480                 else
 481                         nv_connector->use_dithering = false;
 482
 483                 if (connector->encoder && connector->encoder->crtc)
 484                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 485
 486                 if (!nv_crtc || !nv_crtc->set_dither)
 487                         return 0;
 488
 489                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 490                                            true);
 491         }
 492
 493         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 494                 return get_slave_funcs(encoder)->set_property(
 495                         encoder, connector, property, value);
 496
 497         return -EINVAL;
 498 }
 499
 500 static struct drm_display_mode *
 501 nouveau_connector_native_mode(struct drm_connector *connector)
 502 {
 503         struct drm_connector_helper_funcs *helper = connector->helper_private;
 504         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 505         struct drm_device *dev = connector->dev;
 506         struct drm_display_mode *mode, *largest = NULL;
 507         int high_w = 0, high_h = 0, high_v = 0;
 508
 509         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 510                 mode->vrefresh = drm_mode_vrefresh(mode);
 511                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 512                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 513                         continue;
 514
 515                 /* Use preferred mode if there is one.. */
 516                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 517                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 518                         return drm_mode_duplicate(dev, mode);
 519                 }
 520
 521                 /* Otherwise, take the resolution with the largest width, then
 522                  * height, then vertical refresh
 523                  */
 524                 if (mode->hdisplay < high_w)
 525                         continue;
 526
 527                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 528                         continue;
 529
 530                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 531                     mode->vrefresh < high_v)
 532                         continue;
 533
 534                 high_w = mode->hdisplay;
 535                 high_h = mode->vdisplay;
 536                 high_v = mode->vrefresh;
 537                 largest = mode;
 538         }
 539
 540         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 541                       high_w, high_h, high_v);
 542         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 543 }
 544
 545 struct moderec {
 546         int hdisplay;
 547         int vdisplay;
 548 };
 549
 550 static struct moderec scaler_modes[] = {
 551         { 1920, 1200 },
 552         { 1920, 1080 },
 553         { 1680, 1050 },
 554         { 1600, 1200 },
 555         { 1400, 1050 },
 556         { 1280, 1024 },
 557         { 1280, 960 },
 558         { 1152, 864 },
 559         { 1024, 768 },
 560         { 800, 600 },
 561         { 720, 400 },
 562         { 640, 480 },
 563         { 640, 400 },
 564         { 640, 350 },
 565         {}
 566 };
 567
 568 static int
 569 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 570 {
 571         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 572         struct drm_display_mode *native = nv_connector->native_mode, *m;
 573         struct drm_device *dev = connector->dev;
 574         struct moderec *mode = &scaler_modes[0];
 575         int modes = 0;
 576
 577         if (!native)
 578                 return 0;
 579
 580         while (mode->hdisplay) {
 581                 if (mode->hdisplay <= native->hdisplay &&
 582                     mode->vdisplay <= native->vdisplay) {
 583                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 584                                          drm_mode_vrefresh(native), false,
 585                                          false, false);
 586                         if (!m)
 587                                 continue;
 588
 589                         m->type |= DRM_MODE_TYPE_DRIVER;
 590
 591                         drm_mode_probed_add(connector, m);
 592                         modes++;
 593                 }
 594
 595                 mode++;
 596         }
 597
 598         return modes;
 599 }
 600
 601 static int
 602 nouveau_connector_get_modes(struct drm_connector *connector)
 603 {
 604         struct drm_device *dev = connector->dev;
 605         struct drm_nouveau_private *dev_priv = dev->dev_private;
 606         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 607         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 608         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 609         int ret = 0;
 610
 611         /* destroy the native mode, the attached monitor could have changed.
 612          */
 613         if (nv_connector->native_mode) {
 614                 drm_mode_destroy(dev, nv_connector->native_mode);
 615                 nv_connector->native_mode = NULL;
 616         }
 617
 618         if (nv_connector->edid)
 619                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 620         else
 621         if (nv_encoder->dcb->type == OUTPUT_LVDS &&
 622             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 623              dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 624                 struct drm_display_mode mode;
 625
 626                 nouveau_bios_fp_mode(dev, &mode);
 627                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 628         }
 629
 630         /* Find the native mode if this is a digital panel, if we didn't
 631          * find any modes through DDC previously add the native mode to
 632          * the list of modes.
 633          */
 634         if (!nv_connector->native_mode)
 635                 nv_connector->native_mode =
 636                         nouveau_connector_native_mode(connector);
 637         if (ret == 0 && nv_connector->native_mode) {
 638                 struct drm_display_mode *mode;
 639
 640                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 641                 drm_mode_probed_add(connector, mode);
 642                 ret = 1;
 643         }
 644
 645         if (nv_encoder->dcb->type == OUTPUT_TV)
 646                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 647
 648         if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS ||
 649             nv_connector->dcb->type == DCB_CONNECTOR_eDP)
 650                 ret += nouveau_connector_scaler_modes_add(connector);
 651
 652         return ret;
 653 }
 654
 655 static unsigned
 656 get_tmds_link_bandwidth(struct drm_connector *connector)
 657 {
 658         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 659         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 660         struct dcb_entry *dcb = nv_connector->detected_encoder->dcb;
 661
 662         if (dcb->location != DCB_LOC_ON_CHIP ||
 663             dev_priv->chipset >= 0x46)
 664                 return 165000;
 665         else if (dev_priv->chipset >= 0x40)
 666                 return 155000;
 667         else if (dev_priv->chipset >= 0x18)
 668                 return 135000;
 669         else
 670                 return 112000;
 671 }
 672
 673 static int
 674 nouveau_connector_mode_valid(struct drm_connector *connector,
 675                              struct drm_display_mode *mode)
 676 {
 677         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 678         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 679         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 680         unsigned min_clock = 25000, max_clock = min_clock;
 681         unsigned clock = mode->clock;
 682
 683         switch (nv_encoder->dcb->type) {
 684         case OUTPUT_LVDS:
 685                 if (nv_connector->native_mode &&
 686                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 687                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 688                         return MODE_PANEL;
 689
 690                 min_clock = 0;
 691                 max_clock = 400000;
 692                 break;
 693         case OUTPUT_TMDS:
 694                 max_clock = get_tmds_link_bandwidth(connector);
 695                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 696                         max_clock *= 2;
 697                 break;
 698         case OUTPUT_ANALOG:
 699                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 700                 if (!max_clock)
 701                         max_clock = 350000;
 702                 break;
 703         case OUTPUT_TV:
 704                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 705         case OUTPUT_DP:
 706                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 707                         max_clock = nv_encoder->dp.link_nr * 270000;
 708                 else
 709                         max_clock = nv_encoder->dp.link_nr * 162000;
 710
 711                 clock = clock * nouveau_connector_bpp(connector) / 8;
 712                 break;
 713         default:
 714                 BUG_ON(1);
 715                 return MODE_BAD;
 716         }
 717
 718         if (clock < min_clock)
 719                 return MODE_CLOCK_LOW;
 720
 721         if (clock > max_clock)
 722                 return MODE_CLOCK_HIGH;
 723
 724         return MODE_OK;
 725 }
 726
 727 static struct drm_encoder *
 728 nouveau_connector_best_encoder(struct drm_connector *connector)
 729 {
 730         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 731
 732         if (nv_connector->detected_encoder)
 733                 return to_drm_encoder(nv_connector->detected_encoder);
 734
 735         return NULL;
 736 }
 737
 738 static const struct drm_connector_helper_funcs
 739 nouveau_connector_helper_funcs = {
 740         .get_modes = nouveau_connector_get_modes,
 741         .mode_valid = nouveau_connector_mode_valid,
 742         .best_encoder = nouveau_connector_best_encoder,
 743 };
 744
 745 static const struct drm_connector_funcs
 746 nouveau_connector_funcs = {
 747         .dpms = drm_helper_connector_dpms,
 748         .save = NULL,
 749         .restore = NULL,
 750         .detect = nouveau_connector_detect,
 751         .destroy = nouveau_connector_destroy,
 752         .fill_modes = drm_helper_probe_single_connector_modes,
 753         .set_property = nouveau_connector_set_property,
 754         .force = nouveau_connector_force
 755 };
 756
 757 static const struct drm_connector_funcs
 758 nouveau_connector_funcs_lvds = {
 759         .dpms = drm_helper_connector_dpms,
 760         .save = NULL,
 761         .restore = NULL,
 762         .detect = nouveau_connector_detect_lvds,
 763         .destroy = nouveau_connector_destroy,
 764         .fill_modes = drm_helper_probe_single_connector_modes,
 765         .set_property = nouveau_connector_set_property,
 766         .force = nouveau_connector_force
 767 };
 768
 769 struct drm_connector *
 770 nouveau_connector_create(struct drm_device *dev, int index)
 771 {
 772         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 773         struct drm_nouveau_private *dev_priv = dev->dev_private;
 774         struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio;
 775         struct nouveau_connector *nv_connector = NULL;
 776         struct dcb_connector_table_entry *dcb = NULL;
 777         struct drm_connector *connector;
 778         int type, ret = 0;
 779
 780         NV_DEBUG_KMS(dev, "\n");
 781
 782         if (index >= dev_priv->vbios.dcb.connector.entries)
 783                 return ERR_PTR(-EINVAL);
 784
 785         dcb = &dev_priv->vbios.dcb.connector.entry[index];
 786         if (dcb->drm)
 787                 return dcb->drm;
 788
 789         switch (dcb->type) {
 790         case DCB_CONNECTOR_VGA:
 791                 type = DRM_MODE_CONNECTOR_VGA;
 792                 break;
 793         case DCB_CONNECTOR_TV_0:
 794         case DCB_CONNECTOR_TV_1:
 795         case DCB_CONNECTOR_TV_3:
 796                 type = DRM_MODE_CONNECTOR_TV;
 797                 break;
 798         case DCB_CONNECTOR_DVI_I:
 799                 type = DRM_MODE_CONNECTOR_DVII;
 800                 break;
 801         case DCB_CONNECTOR_DVI_D:
 802                 type = DRM_MODE_CONNECTOR_DVID;
 803                 break;
 804         case DCB_CONNECTOR_HDMI_0:
 805         case DCB_CONNECTOR_HDMI_1:
 806                 type = DRM_MODE_CONNECTOR_HDMIA;
 807                 break;
 808         case DCB_CONNECTOR_LVDS:
 809                 type = DRM_MODE_CONNECTOR_LVDS;
 810                 funcs = &nouveau_connector_funcs_lvds;
 811                 break;
 812         case DCB_CONNECTOR_DP:
 813                 type = DRM_MODE_CONNECTOR_DisplayPort;
 814                 break;
 815         case DCB_CONNECTOR_eDP:
 816                 type = DRM_MODE_CONNECTOR_eDP;
 817                 break;
 818         default:
 819                 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
 820                 return ERR_PTR(-EINVAL);
 821         }
 822
 823         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 824         if (!nv_connector)
 825                 return ERR_PTR(-ENOMEM);
 826         nv_connector->dcb = dcb;
 827         connector = &nv_connector->base;
 828
 829         /* defaults, will get overridden in detect() */
 830         connector->interlace_allowed = false;
 831         connector->doublescan_allowed = false;
 832
 833         drm_connector_init(dev, connector, funcs, type);
 834         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 835
 836         /* Check if we need dithering enabled */
 837         if (dcb->type == DCB_CONNECTOR_LVDS) {
 838                 bool dummy, is_24bit = false;
 839
 840                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &is_24bit);
 841                 if (ret) {
 842                         NV_ERROR(dev, "Error parsing LVDS table, disabling "
 843                                  "LVDS\n");
 844                         goto fail;
 845                 }
 846
 847                 nv_connector->use_dithering = !is_24bit;
 848         }
 849
 850         /* Init DVI-I specific properties */
 851         if (dcb->type == DCB_CONNECTOR_DVI_I) {
 852                 drm_mode_create_dvi_i_properties(dev);
 853                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 854                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 855         }
 856
 857         switch (dcb->type) {
 858         case DCB_CONNECTOR_VGA:
 859                 if (dev_priv->card_type >= NV_50) {
 860                         drm_connector_attach_property(connector,
 861                                         dev->mode_config.scaling_mode_property,
 862                                         nv_connector->scaling_mode);
 863                 }
 864                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 865                 /* fall-through */
 866         case DCB_CONNECTOR_TV_0:
 867         case DCB_CONNECTOR_TV_1:
 868         case DCB_CONNECTOR_TV_3:
 869                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 870                 break;
 871         default:
 872                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 873
 874                 drm_connector_attach_property(connector,
 875                                 dev->mode_config.scaling_mode_property,
 876                                 nv_connector->scaling_mode);
 877                 drm_connector_attach_property(connector,
 878                                 dev->mode_config.dithering_mode_property,
 879                                 nv_connector->use_dithering ?
 880                                 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 881
 882                 if (dcb->type != DCB_CONNECTOR_LVDS) {
 883                         if (dev_priv->card_type >= NV_50)
 884                                 connector->polled = DRM_CONNECTOR_POLL_HPD;
 885                         else
 886                                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 887                 }
 888                 break;
 889         }
 890
 891         if (pgpio->irq_register) {
 892                 pgpio->irq_register(dev, nv_connector->dcb->gpio_tag,
 893                                     nouveau_connector_hotplug, connector);
 894         }
 895
 896         drm_sysfs_connector_add(connector);
 897         dcb->drm = connector;
 898         return dcb->drm;
 899
 900 fail:
 901         drm_connector_cleanup(connector);
 902         kfree(connector);
 903         return ERR_PTR(ret);
 904
 905 }
 906
 907 static void
 908 nouveau_connector_hotplug(void *data, int plugged)
 909 {
 910         struct drm_connector *connector = data;
 911         struct drm_device *dev = connector->dev;
 912
 913         NV_INFO(dev, "%splugged %s\n", plugged ? "" : "un",
 914                 drm_get_connector_name(connector));
 915
 916         if (connector->encoder && connector->encoder->crtc &&
 917             connector->encoder->crtc->enabled) {
 918                 struct nouveau_encoder *nv_encoder = nouveau_encoder(connector->encoder);
 919                 struct drm_encoder_helper_funcs *helper =
 920                         connector->encoder->helper_private;
 921
 922                 if (nv_encoder->dcb->type == OUTPUT_DP) {
 923                         if (plugged)
 924                                 helper->dpms(connector->encoder, DRM_MODE_DPMS_ON);
 925                         else
 926                                 helper->dpms(connector->encoder, DRM_MODE_DPMS_OFF);
 927                 }
 928         }
 929
 930         drm_helper_hpd_irq_event(dev);
 931 }