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 <drm/drmP.h>
  30 #include <drm/drm_edid.h>
  31 #include <drm/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_gpio.h"
  39 #include "nouveau_hw.h"
  40
  41 static void nouveau_connector_hotplug(void *, int);
  42
  43 struct nouveau_encoder *
  44 find_encoder(struct drm_connector *connector, int type)
  45 {
  46         struct drm_device *dev = connector->dev;
  47         struct nouveau_encoder *nv_encoder;
  48         struct drm_mode_object *obj;
  49         int i, id;
  50
  51         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  52                 id = connector->encoder_ids[i];
  53                 if (!id)
  54                         break;
  55
  56                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  57                 if (!obj)
  58                         continue;
  59                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  60
  61                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  62                         return nv_encoder;
  63         }
  64
  65         return NULL;
  66 }
  67
  68 struct nouveau_connector *
  69 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  70 {
  71         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  72         struct drm_connector *drm_connector;
  73
  74         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  75                 if (drm_connector->encoder == to_drm_encoder(encoder))
  76                         return nouveau_connector(drm_connector);
  77         }
  78
  79         return NULL;
  80 }
  81
  82 static void
  83 nouveau_connector_destroy(struct drm_connector *connector)
  84 {
  85         struct nouveau_connector *nv_connector = nouveau_connector(connector);
  86         struct drm_nouveau_private *dev_priv;
  87         struct drm_device *dev;
  88
  89         if (!nv_connector)
  90                 return;
  91
  92         dev = nv_connector->base.dev;
  93         dev_priv = dev->dev_private;
  94         NV_DEBUG_KMS(dev, "\n");
  95
  96         if (nv_connector->hpd != DCB_GPIO_UNUSED) {
  97                 nouveau_gpio_isr_del(dev, 0, nv_connector->hpd, 0xff,
  98                                      nouveau_connector_hotplug, connector);
  99         }
 100
 101         kfree(nv_connector->edid);
 102         drm_sysfs_connector_remove(connector);
 103         drm_connector_cleanup(connector);
 104         kfree(connector);
 105 }
 106
 107 static struct nouveau_i2c_chan *
 108 nouveau_connector_ddc_detect(struct drm_connector *connector,
 109                              struct nouveau_encoder **pnv_encoder)
 110 {
 111         struct drm_device *dev = connector->dev;
 112         int i;
 113
 114         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 115                 struct nouveau_i2c_chan *i2c = NULL;
 116                 struct nouveau_encoder *nv_encoder;
 117                 struct drm_mode_object *obj;
 118                 int id;
 119
 120                 id = connector->encoder_ids[i];
 121                 if (!id)
 122                         break;
 123
 124                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 125                 if (!obj)
 126                         continue;
 127                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 128
 129                 if (nv_encoder->dcb->i2c_index < 0xf)
 130                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 131
 132                 if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
 133                         *pnv_encoder = nv_encoder;
 134                         return i2c;
 135                 }
 136         }
 137
 138         return NULL;
 139 }
 140
 141 static struct nouveau_encoder *
 142 nouveau_connector_of_detect(struct drm_connector *connector)
 143 {
 144 #ifdef __powerpc__
 145         struct drm_device *dev = connector->dev;
 146         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 147         struct nouveau_encoder *nv_encoder;
 148         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 149
 150         if (!dn ||
 151             !((nv_encoder = find_encoder(connector, OUTPUT_TMDS)) ||
 152               (nv_encoder = find_encoder(connector, OUTPUT_ANALOG))))
 153                 return NULL;
 154
 155         for_each_child_of_node(dn, cn) {
 156                 const char *name = of_get_property(cn, "name", NULL);
 157                 const void *edid = of_get_property(cn, "EDID", NULL);
 158                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 159
 160                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 161                         nv_connector->edid =
 162                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 163                         of_node_put(cn);
 164                         return nv_encoder;
 165                 }
 166         }
 167 #endif
 168         return NULL;
 169 }
 170
 171 static void
 172 nouveau_connector_set_encoder(struct drm_connector *connector,
 173                               struct nouveau_encoder *nv_encoder)
 174 {
 175         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 176         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 177         struct drm_device *dev = connector->dev;
 178
 179         if (nv_connector->detected_encoder == nv_encoder)
 180                 return;
 181         nv_connector->detected_encoder = nv_encoder;
 182
 183         if (dev_priv->card_type >= NV_50) {
 184                 connector->interlace_allowed = true;
 185                 connector->doublescan_allowed = true;
 186         } else
 187         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 188             nv_encoder->dcb->type == OUTPUT_TMDS) {
 189                 connector->doublescan_allowed = false;
 190                 connector->interlace_allowed = false;
 191         } else {
 192                 connector->doublescan_allowed = true;
 193                 if (dev_priv->card_type == NV_20 ||
 194                    (dev_priv->card_type == NV_10 &&
 195                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 196                     (dev->pci_device & 0x0ff0) != 0x0150))
 197                         /* HW is broken */
 198                         connector->interlace_allowed = false;
 199                 else
 200                         connector->interlace_allowed = true;
 201         }
 202
 203         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 204                 drm_connector_property_set_value(connector,
 205                         dev->mode_config.dvi_i_subconnector_property,
 206                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 207                         DRM_MODE_SUBCONNECTOR_DVID :
 208                         DRM_MODE_SUBCONNECTOR_DVIA);
 209         }
 210 }
 211
 212 static enum drm_connector_status
 213 nouveau_connector_detect(struct drm_connector *connector, bool force)
 214 {
 215         struct drm_device *dev = connector->dev;
 216         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 217         struct nouveau_encoder *nv_encoder = NULL;
 218         struct nouveau_encoder *nv_partner;
 219         struct nouveau_i2c_chan *i2c;
 220         int type;
 221
 222         /* Cleanup the previous EDID block. */
 223         if (nv_connector->edid) {
 224                 drm_mode_connector_update_edid_property(connector, NULL);
 225                 kfree(nv_connector->edid);
 226                 nv_connector->edid = NULL;
 227         }
 228
 229         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 230         if (i2c) {
 231                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 232                 drm_mode_connector_update_edid_property(connector,
 233                                                         nv_connector->edid);
 234                 if (!nv_connector->edid) {
 235                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 236                                  drm_get_connector_name(connector));
 237                         goto detect_analog;
 238                 }
 239
 240                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 241                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 242                         NV_ERROR(dev, "Detected %s, but failed init\n",
 243                                  drm_get_connector_name(connector));
 244                         return connector_status_disconnected;
 245                 }
 246
 247                 /* Override encoder type for DVI-I based on whether EDID
 248                  * says the display is digital or analog, both use the
 249                  * same i2c channel so the value returned from ddc_detect
 250                  * isn't necessarily correct.
 251                  */
 252                 nv_partner = NULL;
 253                 if (nv_encoder->dcb->type == OUTPUT_TMDS)
 254                         nv_partner = find_encoder(connector, OUTPUT_ANALOG);
 255                 if (nv_encoder->dcb->type == OUTPUT_ANALOG)
 256                         nv_partner = find_encoder(connector, OUTPUT_TMDS);
 257
 258                 if (nv_partner && ((nv_encoder->dcb->type == OUTPUT_ANALOG &&
 259                                     nv_partner->dcb->type == OUTPUT_TMDS) ||
 260                                    (nv_encoder->dcb->type == OUTPUT_TMDS &&
 261                                     nv_partner->dcb->type == OUTPUT_ANALOG))) {
 262                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 263                                 type = OUTPUT_TMDS;
 264                         else
 265                                 type = OUTPUT_ANALOG;
 266
 267                         nv_encoder = find_encoder(connector, type);
 268                 }
 269
 270                 nouveau_connector_set_encoder(connector, nv_encoder);
 271                 return connector_status_connected;
 272         }
 273
 274         nv_encoder = nouveau_connector_of_detect(connector);
 275         if (nv_encoder) {
 276                 nouveau_connector_set_encoder(connector, nv_encoder);
 277                 return connector_status_connected;
 278         }
 279
 280 detect_analog:
 281         nv_encoder = find_encoder(connector, OUTPUT_ANALOG);
 282         if (!nv_encoder && !nouveau_tv_disable)
 283                 nv_encoder = find_encoder(connector, OUTPUT_TV);
 284         if (nv_encoder && force) {
 285                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 286                 struct drm_encoder_helper_funcs *helper =
 287                                                 encoder->helper_private;
 288
 289                 if (helper->detect(encoder, connector) ==
 290                                                 connector_status_connected) {
 291                         nouveau_connector_set_encoder(connector, nv_encoder);
 292                         return connector_status_connected;
 293                 }
 294
 295         }
 296
 297         return connector_status_disconnected;
 298 }
 299
 300 static enum drm_connector_status
 301 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 302 {
 303         struct drm_device *dev = connector->dev;
 304         struct drm_nouveau_private *dev_priv = dev->dev_private;
 305         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 306         struct nouveau_encoder *nv_encoder = NULL;
 307         enum drm_connector_status status = connector_status_disconnected;
 308
 309         /* Cleanup the previous EDID block. */
 310         if (nv_connector->edid) {
 311                 drm_mode_connector_update_edid_property(connector, NULL);
 312                 kfree(nv_connector->edid);
 313                 nv_connector->edid = NULL;
 314         }
 315
 316         nv_encoder = find_encoder(connector, OUTPUT_LVDS);
 317         if (!nv_encoder)
 318                 return connector_status_disconnected;
 319
 320         /* Try retrieving EDID via DDC */
 321         if (!dev_priv->vbios.fp_no_ddc) {
 322                 status = nouveau_connector_detect(connector, force);
 323                 if (status == connector_status_connected)
 324                         goto out;
 325         }
 326
 327         /* On some laptops (Sony, i'm looking at you) there appears to
 328          * be no direct way of accessing the panel's EDID.  The only
 329          * option available to us appears to be to ask ACPI for help..
 330          *
 331          * It's important this check's before trying straps, one of the
 332          * said manufacturer's laptops are configured in such a way
 333          * the nouveau decides an entry in the VBIOS FP mode table is
 334          * valid - it's not (rh#613284)
 335          */
 336         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 337                 if (!nouveau_acpi_edid(dev, connector)) {
 338                         status = connector_status_connected;
 339                         goto out;
 340                 }
 341         }
 342
 343         /* If no EDID found above, and the VBIOS indicates a hardcoded
 344          * modeline is avalilable for the panel, set it as the panel's
 345          * native mode and exit.
 346          */
 347         if (nouveau_bios_fp_mode(dev, NULL) && (dev_priv->vbios.fp_no_ddc ||
 348             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 349                 status = connector_status_connected;
 350                 goto out;
 351         }
 352
 353         /* Still nothing, some VBIOS images have a hardcoded EDID block
 354          * stored for the panel stored in them.
 355          */
 356         if (!dev_priv->vbios.fp_no_ddc) {
 357                 struct edid *edid =
 358                         (struct edid *)nouveau_bios_embedded_edid(dev);
 359                 if (edid) {
 360                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 361                         *(nv_connector->edid) = *edid;
 362                         status = connector_status_connected;
 363                 }
 364         }
 365
 366 out:
 367 #if defined(CONFIG_ACPI_BUTTON) || \
 368         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 369         if (status == connector_status_connected &&
 370             !nouveau_ignorelid && !acpi_lid_open())
 371                 status = connector_status_unknown;
 372 #endif
 373
 374         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 375         nouveau_connector_set_encoder(connector, nv_encoder);
 376         return status;
 377 }
 378
 379 static void
 380 nouveau_connector_force(struct drm_connector *connector)
 381 {
 382         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 383         struct nouveau_encoder *nv_encoder;
 384         int type;
 385
 386         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 387                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 388                         type = OUTPUT_TMDS;
 389                 else
 390                         type = OUTPUT_ANALOG;
 391         } else
 392                 type = OUTPUT_ANY;
 393
 394         nv_encoder = find_encoder(connector, type);
 395         if (!nv_encoder) {
 396                 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
 397                          drm_get_connector_name(connector));
 398                 connector->status = connector_status_disconnected;
 399                 return;
 400         }
 401
 402         nouveau_connector_set_encoder(connector, nv_encoder);
 403 }
 404
 405 static int
 406 nouveau_connector_set_property(struct drm_connector *connector,
 407                                struct drm_property *property, uint64_t value)
 408 {
 409         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 410         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 411         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 412         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 413         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 414         struct drm_device *dev = connector->dev;
 415         struct nouveau_crtc *nv_crtc;
 416         int ret;
 417
 418         nv_crtc = NULL;
 419         if (connector->encoder && connector->encoder->crtc)
 420                 nv_crtc = nouveau_crtc(connector->encoder->crtc);
 421
 422         /* Scaling mode */
 423         if (property == dev->mode_config.scaling_mode_property) {
 424                 bool modeset = false;
 425
 426                 switch (value) {
 427                 case DRM_MODE_SCALE_NONE:
 428                 case DRM_MODE_SCALE_FULLSCREEN:
 429                 case DRM_MODE_SCALE_CENTER:
 430                 case DRM_MODE_SCALE_ASPECT:
 431                         break;
 432                 default:
 433                         return -EINVAL;
 434                 }
 435
 436                 /* LVDS always needs gpu scaling */
 437                 if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS &&
 438                     value == DRM_MODE_SCALE_NONE)
 439                         return -EINVAL;
 440
 441                 /* Changing between GPU and panel scaling requires a full
 442                  * modeset
 443                  */
 444                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 445                     (value == DRM_MODE_SCALE_NONE))
 446                         modeset = true;
 447                 nv_connector->scaling_mode = value;
 448
 449                 if (!nv_crtc)
 450                         return 0;
 451
 452                 if (modeset || !nv_crtc->set_scale) {
 453                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 454                                                         &nv_crtc->base.mode,
 455                                                         nv_crtc->base.x,
 456                                                         nv_crtc->base.y, NULL);
 457                         if (!ret)
 458                                 return -EINVAL;
 459                 } else {
 460                         ret = nv_crtc->set_scale(nv_crtc, true);
 461                         if (ret)
 462                                 return ret;
 463                 }
 464
 465                 return 0;
 466         }
 467
 468         /* Underscan */
 469         if (property == disp->underscan_property) {
 470                 if (nv_connector->underscan != value) {
 471                         nv_connector->underscan = value;
 472                         if (!nv_crtc || !nv_crtc->set_scale)
 473                                 return 0;
 474
 475                         return nv_crtc->set_scale(nv_crtc, true);
 476                 }
 477
 478                 return 0;
 479         }
 480
 481         if (property == disp->underscan_hborder_property) {
 482                 if (nv_connector->underscan_hborder != value) {
 483                         nv_connector->underscan_hborder = value;
 484                         if (!nv_crtc || !nv_crtc->set_scale)
 485                                 return 0;
 486
 487                         return nv_crtc->set_scale(nv_crtc, true);
 488                 }
 489
 490                 return 0;
 491         }
 492
 493         if (property == disp->underscan_vborder_property) {
 494                 if (nv_connector->underscan_vborder != value) {
 495                         nv_connector->underscan_vborder = value;
 496                         if (!nv_crtc || !nv_crtc->set_scale)
 497                                 return 0;
 498
 499                         return nv_crtc->set_scale(nv_crtc, true);
 500                 }
 501
 502                 return 0;
 503         }
 504
 505         /* Dithering */
 506         if (property == disp->dithering_mode) {
 507                 nv_connector->dithering_mode = value;
 508                 if (!nv_crtc || !nv_crtc->set_dither)
 509                         return 0;
 510
 511                 return nv_crtc->set_dither(nv_crtc, true);
 512         }
 513
 514         if (property == disp->dithering_depth) {
 515                 nv_connector->dithering_depth = value;
 516                 if (!nv_crtc || !nv_crtc->set_dither)
 517                         return 0;
 518
 519                 return nv_crtc->set_dither(nv_crtc, true);
 520         }
 521
 522         if (nv_crtc && nv_crtc->set_color_vibrance) {
 523                 /* Hue */
 524                 if (property == disp->vibrant_hue_property) {
 525                         nv_crtc->vibrant_hue = value - 90;
 526                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 527                 }
 528                 /* Saturation */
 529                 if (property == disp->color_vibrance_property) {
 530                         nv_crtc->color_vibrance = value - 100;
 531                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 532                 }
 533         }
 534
 535         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 536                 return get_slave_funcs(encoder)->set_property(
 537                         encoder, connector, property, value);
 538
 539         return -EINVAL;
 540 }
 541
 542 static struct drm_display_mode *
 543 nouveau_connector_native_mode(struct drm_connector *connector)
 544 {
 545         struct drm_connector_helper_funcs *helper = connector->helper_private;
 546         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 547         struct drm_device *dev = connector->dev;
 548         struct drm_display_mode *mode, *largest = NULL;
 549         int high_w = 0, high_h = 0, high_v = 0;
 550
 551         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 552                 mode->vrefresh = drm_mode_vrefresh(mode);
 553                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 554                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 555                         continue;
 556
 557                 /* Use preferred mode if there is one.. */
 558                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 559                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 560                         return drm_mode_duplicate(dev, mode);
 561                 }
 562
 563                 /* Otherwise, take the resolution with the largest width, then
 564                  * height, then vertical refresh
 565                  */
 566                 if (mode->hdisplay < high_w)
 567                         continue;
 568
 569                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 570                         continue;
 571
 572                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 573                     mode->vrefresh < high_v)
 574                         continue;
 575
 576                 high_w = mode->hdisplay;
 577                 high_h = mode->vdisplay;
 578                 high_v = mode->vrefresh;
 579                 largest = mode;
 580         }
 581
 582         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 583                       high_w, high_h, high_v);
 584         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 585 }
 586
 587 struct moderec {
 588         int hdisplay;
 589         int vdisplay;
 590 };
 591
 592 static struct moderec scaler_modes[] = {
 593         { 1920, 1200 },
 594         { 1920, 1080 },
 595         { 1680, 1050 },
 596         { 1600, 1200 },
 597         { 1400, 1050 },
 598         { 1280, 1024 },
 599         { 1280, 960 },
 600         { 1152, 864 },
 601         { 1024, 768 },
 602         { 800, 600 },
 603         { 720, 400 },
 604         { 640, 480 },
 605         { 640, 400 },
 606         { 640, 350 },
 607         {}
 608 };
 609
 610 static int
 611 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 612 {
 613         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 614         struct drm_display_mode *native = nv_connector->native_mode, *m;
 615         struct drm_device *dev = connector->dev;
 616         struct moderec *mode = &scaler_modes[0];
 617         int modes = 0;
 618
 619         if (!native)
 620                 return 0;
 621
 622         while (mode->hdisplay) {
 623                 if (mode->hdisplay <= native->hdisplay &&
 624                     mode->vdisplay <= native->vdisplay) {
 625                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 626                                          drm_mode_vrefresh(native), false,
 627                                          false, false);
 628                         if (!m)
 629                                 continue;
 630
 631                         m->type |= DRM_MODE_TYPE_DRIVER;
 632
 633                         drm_mode_probed_add(connector, m);
 634                         modes++;
 635                 }
 636
 637                 mode++;
 638         }
 639
 640         return modes;
 641 }
 642
 643 static void
 644 nouveau_connector_detect_depth(struct drm_connector *connector)
 645 {
 646         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 647         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 648         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 649         struct nvbios *bios = &dev_priv->vbios;
 650         struct drm_display_mode *mode = nv_connector->native_mode;
 651         bool duallink;
 652
 653         /* if the edid is feeling nice enough to provide this info, use it */
 654         if (nv_connector->edid && connector->display_info.bpc)
 655                 return;
 656
 657         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 658         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 659                 connector->display_info.bpc = 6;
 660                 return;
 661         }
 662
 663         /* we're out of options unless we're LVDS, default to 8bpc */
 664         if (nv_encoder->dcb->type != OUTPUT_LVDS) {
 665                 connector->display_info.bpc = 8;
 666                 return;
 667         }
 668
 669         connector->display_info.bpc = 6;
 670
 671         /* LVDS: panel straps */
 672         if (bios->fp_no_ddc) {
 673                 if (bios->fp.if_is_24bit)
 674                         connector->display_info.bpc = 8;
 675                 return;
 676         }
 677
 678         /* LVDS: DDC panel, need to first determine the number of links to
 679          * know which if_is_24bit flag to check...
 680          */
 681         if (nv_connector->edid &&
 682             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 683                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 684         else
 685                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 686
 687         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 688             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 689                 connector->display_info.bpc = 8;
 690 }
 691
 692 static int
 693 nouveau_connector_get_modes(struct drm_connector *connector)
 694 {
 695         struct drm_device *dev = connector->dev;
 696         struct drm_nouveau_private *dev_priv = dev->dev_private;
 697         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 698         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 699         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 700         int ret = 0;
 701
 702         /* destroy the native mode, the attached monitor could have changed.
 703          */
 704         if (nv_connector->native_mode) {
 705                 drm_mode_destroy(dev, nv_connector->native_mode);
 706                 nv_connector->native_mode = NULL;
 707         }
 708
 709         if (nv_connector->edid)
 710                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 711         else
 712         if (nv_encoder->dcb->type == OUTPUT_LVDS &&
 713             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 714              dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 715                 struct drm_display_mode mode;
 716
 717                 nouveau_bios_fp_mode(dev, &mode);
 718                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 719         }
 720
 721         /* Determine display colour depth for everything except LVDS now,
 722          * DP requires this before mode_valid() is called.
 723          */
 724         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 725                 nouveau_connector_detect_depth(connector);
 726
 727         /* Find the native mode if this is a digital panel, if we didn't
 728          * find any modes through DDC previously add the native mode to
 729          * the list of modes.
 730          */
 731         if (!nv_connector->native_mode)
 732                 nv_connector->native_mode =
 733                         nouveau_connector_native_mode(connector);
 734         if (ret == 0 && nv_connector->native_mode) {
 735                 struct drm_display_mode *mode;
 736
 737                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 738                 drm_mode_probed_add(connector, mode);
 739                 ret = 1;
 740         }
 741
 742         /* Determine LVDS colour depth, must happen after determining
 743          * "native" mode as some VBIOS tables require us to use the
 744          * pixel clock as part of the lookup...
 745          */
 746         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 747                 nouveau_connector_detect_depth(connector);
 748
 749         if (nv_encoder->dcb->type == OUTPUT_TV)
 750                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 751
 752         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 753             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 754             nv_connector->type == DCB_CONNECTOR_eDP)
 755                 ret += nouveau_connector_scaler_modes_add(connector);
 756
 757         return ret;
 758 }
 759
 760 static unsigned
 761 get_tmds_link_bandwidth(struct drm_connector *connector)
 762 {
 763         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 764         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 765         struct dcb_entry *dcb = nv_connector->detected_encoder->dcb;
 766
 767         if (dcb->location != DCB_LOC_ON_CHIP ||
 768             dev_priv->chipset >= 0x46)
 769                 return 165000;
 770         else if (dev_priv->chipset >= 0x40)
 771                 return 155000;
 772         else if (dev_priv->chipset >= 0x18)
 773                 return 135000;
 774         else
 775                 return 112000;
 776 }
 777
 778 static int
 779 nouveau_connector_mode_valid(struct drm_connector *connector,
 780                              struct drm_display_mode *mode)
 781 {
 782         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 783         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 784         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 785         unsigned min_clock = 25000, max_clock = min_clock;
 786         unsigned clock = mode->clock;
 787
 788         switch (nv_encoder->dcb->type) {
 789         case OUTPUT_LVDS:
 790                 if (nv_connector->native_mode &&
 791                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 792                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 793                         return MODE_PANEL;
 794
 795                 min_clock = 0;
 796                 max_clock = 400000;
 797                 break;
 798         case OUTPUT_TMDS:
 799                 max_clock = get_tmds_link_bandwidth(connector);
 800                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 801                         max_clock *= 2;
 802                 break;
 803         case OUTPUT_ANALOG:
 804                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 805                 if (!max_clock)
 806                         max_clock = 350000;
 807                 break;
 808         case OUTPUT_TV:
 809                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 810         case OUTPUT_DP:
 811                 max_clock  = nv_encoder->dp.link_nr;
 812                 max_clock *= nv_encoder->dp.link_bw;
 813                 clock = clock * (connector->display_info.bpc * 3) / 10;
 814                 break;
 815         default:
 816                 BUG_ON(1);
 817                 return MODE_BAD;
 818         }
 819
 820         if (clock < min_clock)
 821                 return MODE_CLOCK_LOW;
 822
 823         if (clock > max_clock)
 824                 return MODE_CLOCK_HIGH;
 825
 826         return MODE_OK;
 827 }
 828
 829 static struct drm_encoder *
 830 nouveau_connector_best_encoder(struct drm_connector *connector)
 831 {
 832         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 833
 834         if (nv_connector->detected_encoder)
 835                 return to_drm_encoder(nv_connector->detected_encoder);
 836
 837         return NULL;
 838 }
 839
 840 static const struct drm_connector_helper_funcs
 841 nouveau_connector_helper_funcs = {
 842         .get_modes = nouveau_connector_get_modes,
 843         .mode_valid = nouveau_connector_mode_valid,
 844         .best_encoder = nouveau_connector_best_encoder,
 845 };
 846
 847 static const struct drm_connector_funcs
 848 nouveau_connector_funcs = {
 849         .dpms = drm_helper_connector_dpms,
 850         .save = NULL,
 851         .restore = NULL,
 852         .detect = nouveau_connector_detect,
 853         .destroy = nouveau_connector_destroy,
 854         .fill_modes = drm_helper_probe_single_connector_modes,
 855         .set_property = nouveau_connector_set_property,
 856         .force = nouveau_connector_force
 857 };
 858
 859 static const struct drm_connector_funcs
 860 nouveau_connector_funcs_lvds = {
 861         .dpms = drm_helper_connector_dpms,
 862         .save = NULL,
 863         .restore = NULL,
 864         .detect = nouveau_connector_detect_lvds,
 865         .destroy = nouveau_connector_destroy,
 866         .fill_modes = drm_helper_probe_single_connector_modes,
 867         .set_property = nouveau_connector_set_property,
 868         .force = nouveau_connector_force
 869 };
 870
 871 static int
 872 drm_conntype_from_dcb(enum dcb_connector_type dcb)
 873 {
 874         switch (dcb) {
 875         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
 876         case DCB_CONNECTOR_TV_0     :
 877         case DCB_CONNECTOR_TV_1     :
 878         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
 879         case DCB_CONNECTOR_DMS59_0  :
 880         case DCB_CONNECTOR_DMS59_1  :
 881         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
 882         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
 883         case DCB_CONNECTOR_LVDS     :
 884         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
 885         case DCB_CONNECTOR_DMS59_DP0:
 886         case DCB_CONNECTOR_DMS59_DP1:
 887         case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
 888         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
 889         case DCB_CONNECTOR_HDMI_0   :
 890         case DCB_CONNECTOR_HDMI_1   : return DRM_MODE_CONNECTOR_HDMIA;
 891         default:
 892                 break;
 893         }
 894
 895         return DRM_MODE_CONNECTOR_Unknown;
 896 }
 897
 898 struct drm_connector *
 899 nouveau_connector_create(struct drm_device *dev, int index)
 900 {
 901         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 902         struct drm_nouveau_private *dev_priv = dev->dev_private;
 903         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 904         struct nouveau_connector *nv_connector = NULL;
 905         struct drm_connector *connector;
 906         int type, ret = 0;
 907         bool dummy;
 908
 909         NV_DEBUG_KMS(dev, "\n");
 910
 911         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 912                 nv_connector = nouveau_connector(connector);
 913                 if (nv_connector->index == index)
 914                         return connector;
 915         }
 916
 917         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 918         if (!nv_connector)
 919                 return ERR_PTR(-ENOMEM);
 920
 921         connector = &nv_connector->base;
 922         nv_connector->index = index;
 923
 924         /* attempt to parse vbios connector type and hotplug gpio */
 925         nv_connector->dcb = dcb_conn(dev, index);
 926         if (nv_connector->dcb) {
 927                 static const u8 hpd[16] = {
 928                         0xff, 0x07, 0x08, 0xff, 0xff, 0x51, 0x52, 0xff,
 929                         0xff, 0xff, 0xff, 0xff, 0xff, 0x5e, 0x5f, 0x60,
 930                 };
 931
 932                 u32 entry = ROM16(nv_connector->dcb[0]);
 933                 if (dcb_conntab(dev)[3] >= 4)
 934                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
 935
 936                 nv_connector->hpd = ffs((entry & 0x07033000) >> 12);
 937                 nv_connector->hpd = hpd[nv_connector->hpd];
 938
 939                 nv_connector->type = nv_connector->dcb[0];
 940                 if (drm_conntype_from_dcb(nv_connector->type) ==
 941                                           DRM_MODE_CONNECTOR_Unknown) {
 942                         NV_WARN(dev, "unknown connector type %02x\n",
 943                                 nv_connector->type);
 944                         nv_connector->type = DCB_CONNECTOR_NONE;
 945                 }
 946
 947                 /* Gigabyte NX85T */
 948                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
 949                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
 950                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 951                 }
 952
 953                 /* Gigabyte GV-NX86T512H */
 954                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
 955                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
 956                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 957                 }
 958         } else {
 959                 nv_connector->type = DCB_CONNECTOR_NONE;
 960                 nv_connector->hpd = DCB_GPIO_UNUSED;
 961         }
 962
 963         /* no vbios data, or an unknown dcb connector type - attempt to
 964          * figure out something suitable ourselves
 965          */
 966         if (nv_connector->type == DCB_CONNECTOR_NONE) {
 967                 struct drm_nouveau_private *dev_priv = dev->dev_private;
 968                 struct dcb_table *dcbt = &dev_priv->vbios.dcb;
 969                 u32 encoders = 0;
 970                 int i;
 971
 972                 for (i = 0; i < dcbt->entries; i++) {
 973                         if (dcbt->entry[i].connector == nv_connector->index)
 974                                 encoders |= (1 << dcbt->entry[i].type);
 975                 }
 976
 977                 if (encoders & (1 << OUTPUT_DP)) {
 978                         if (encoders & (1 << OUTPUT_TMDS))
 979                                 nv_connector->type = DCB_CONNECTOR_DP;
 980                         else
 981                                 nv_connector->type = DCB_CONNECTOR_eDP;
 982                 } else
 983                 if (encoders & (1 << OUTPUT_TMDS)) {
 984                         if (encoders & (1 << OUTPUT_ANALOG))
 985                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 986                         else
 987                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
 988                 } else
 989                 if (encoders & (1 << OUTPUT_ANALOG)) {
 990                         nv_connector->type = DCB_CONNECTOR_VGA;
 991                 } else
 992                 if (encoders & (1 << OUTPUT_LVDS)) {
 993                         nv_connector->type = DCB_CONNECTOR_LVDS;
 994                 } else
 995                 if (encoders & (1 << OUTPUT_TV)) {
 996                         nv_connector->type = DCB_CONNECTOR_TV_0;
 997                 }
 998         }
 999
1000         type = drm_conntype_from_dcb(nv_connector->type);
1001         if (type == DRM_MODE_CONNECTOR_LVDS) {
1002                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1003                 if (ret) {
1004                         NV_ERROR(dev, "Error parsing LVDS table, disabling\n");
1005                         kfree(nv_connector);
1006                         return ERR_PTR(ret);
1007                 }
1008
1009                 funcs = &nouveau_connector_funcs_lvds;
1010         } else {
1011                 funcs = &nouveau_connector_funcs;
1012         }
1013
1014         /* defaults, will get overridden in detect() */
1015         connector->interlace_allowed = false;
1016         connector->doublescan_allowed = false;
1017
1018         drm_connector_init(dev, connector, funcs, type);
1019         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1020
1021         /* Init DVI-I specific properties */
1022         if (nv_connector->type == DCB_CONNECTOR_DVI_I)
1023                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
1024
1025         /* Add overscan compensation options to digital outputs */
1026         if (disp->underscan_property &&
1027             (type == DRM_MODE_CONNECTOR_DVID ||
1028              type == DRM_MODE_CONNECTOR_DVII ||
1029              type == DRM_MODE_CONNECTOR_HDMIA ||
1030              type == DRM_MODE_CONNECTOR_DisplayPort)) {
1031                 drm_connector_attach_property(connector,
1032                                               disp->underscan_property,
1033                                               UNDERSCAN_OFF);
1034                 drm_connector_attach_property(connector,
1035                                               disp->underscan_hborder_property,
1036                                               0);
1037                 drm_connector_attach_property(connector,
1038                                               disp->underscan_vborder_property,
1039                                               0);
1040         }
1041
1042         /* Add hue and saturation options */
1043         if (disp->vibrant_hue_property)
1044                 drm_connector_attach_property(connector,
1045                                               disp->vibrant_hue_property,
1046                                               90);
1047         if (disp->color_vibrance_property)
1048                 drm_connector_attach_property(connector,
1049                                               disp->color_vibrance_property,
1050                                               150);
1051
1052         switch (nv_connector->type) {
1053         case DCB_CONNECTOR_VGA:
1054                 if (dev_priv->card_type >= NV_50) {
1055                         drm_connector_attach_property(connector,
1056                                         dev->mode_config.scaling_mode_property,
1057                                         nv_connector->scaling_mode);
1058                 }
1059                 /* fall-through */
1060         case DCB_CONNECTOR_TV_0:
1061         case DCB_CONNECTOR_TV_1:
1062         case DCB_CONNECTOR_TV_3:
1063                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1064                 break;
1065         default:
1066                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1067
1068                 drm_connector_attach_property(connector,
1069                                 dev->mode_config.scaling_mode_property,
1070                                 nv_connector->scaling_mode);
1071                 if (disp->dithering_mode) {
1072                         nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1073                         drm_connector_attach_property(connector,
1074                                                 disp->dithering_mode,
1075                                                 nv_connector->dithering_mode);
1076                 }
1077                 if (disp->dithering_depth) {
1078                         nv_connector->dithering_depth = DITHERING_DEPTH_AUTO;
1079                         drm_connector_attach_property(connector,
1080                                                 disp->dithering_depth,
1081                                                 nv_connector->dithering_depth);
1082                 }
1083                 break;
1084         }
1085
1086         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1087         if (nv_connector->hpd != DCB_GPIO_UNUSED) {
1088                 ret = nouveau_gpio_isr_add(dev, 0, nv_connector->hpd, 0xff,
1089                                            nouveau_connector_hotplug,
1090                                            connector);
1091                 if (ret == 0)
1092                         connector->polled = DRM_CONNECTOR_POLL_HPD;
1093         }
1094
1095         drm_sysfs_connector_add(connector);
1096         return connector;
1097 }
1098
1099 static void
1100 nouveau_connector_hotplug(void *data, int plugged)
1101 {
1102         struct drm_connector *connector = data;
1103         struct drm_device *dev = connector->dev;
1104
1105         NV_DEBUG(dev, "%splugged %s\n", plugged ? "" : "un",
1106                  drm_get_connector_name(connector));
1107
1108         if (plugged)
1109                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1110         else
1111                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1112
1113         drm_helper_hpd_irq_event(dev);
1114 }