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_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_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 523                 return get_slave_funcs(encoder)->set_property(
 524                         encoder, connector, property, value);
 525
 526         return -EINVAL;
 527 }
 528
 529 static struct drm_display_mode *
 530 nouveau_connector_native_mode(struct drm_connector *connector)
 531 {
 532         struct drm_connector_helper_funcs *helper = connector->helper_private;
 533         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 534         struct drm_device *dev = connector->dev;
 535         struct drm_display_mode *mode, *largest = NULL;
 536         int high_w = 0, high_h = 0, high_v = 0;
 537
 538         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 539                 mode->vrefresh = drm_mode_vrefresh(mode);
 540                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 541                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 542                         continue;
 543
 544                 /* Use preferred mode if there is one.. */
 545                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 546                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 547                         return drm_mode_duplicate(dev, mode);
 548                 }
 549
 550                 /* Otherwise, take the resolution with the largest width, then
 551                  * height, then vertical refresh
 552                  */
 553                 if (mode->hdisplay < high_w)
 554                         continue;
 555
 556                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 557                         continue;
 558
 559                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 560                     mode->vrefresh < high_v)
 561                         continue;
 562
 563                 high_w = mode->hdisplay;
 564                 high_h = mode->vdisplay;
 565                 high_v = mode->vrefresh;
 566                 largest = mode;
 567         }
 568
 569         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 570                       high_w, high_h, high_v);
 571         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 572 }
 573
 574 struct moderec {
 575         int hdisplay;
 576         int vdisplay;
 577 };
 578
 579 static struct moderec scaler_modes[] = {
 580         { 1920, 1200 },
 581         { 1920, 1080 },
 582         { 1680, 1050 },
 583         { 1600, 1200 },
 584         { 1400, 1050 },
 585         { 1280, 1024 },
 586         { 1280, 960 },
 587         { 1152, 864 },
 588         { 1024, 768 },
 589         { 800, 600 },
 590         { 720, 400 },
 591         { 640, 480 },
 592         { 640, 400 },
 593         { 640, 350 },
 594         {}
 595 };
 596
 597 static int
 598 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 599 {
 600         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 601         struct drm_display_mode *native = nv_connector->native_mode, *m;
 602         struct drm_device *dev = connector->dev;
 603         struct moderec *mode = &scaler_modes[0];
 604         int modes = 0;
 605
 606         if (!native)
 607                 return 0;
 608
 609         while (mode->hdisplay) {
 610                 if (mode->hdisplay <= native->hdisplay &&
 611                     mode->vdisplay <= native->vdisplay) {
 612                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 613                                          drm_mode_vrefresh(native), false,
 614                                          false, false);
 615                         if (!m)
 616                                 continue;
 617
 618                         m->type |= DRM_MODE_TYPE_DRIVER;
 619
 620                         drm_mode_probed_add(connector, m);
 621                         modes++;
 622                 }
 623
 624                 mode++;
 625         }
 626
 627         return modes;
 628 }
 629
 630 static void
 631 nouveau_connector_detect_depth(struct drm_connector *connector)
 632 {
 633         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 634         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 635         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 636         struct nvbios *bios = &dev_priv->vbios;
 637         struct drm_display_mode *mode = nv_connector->native_mode;
 638         bool duallink;
 639
 640         /* if the edid is feeling nice enough to provide this info, use it */
 641         if (nv_connector->edid && connector->display_info.bpc)
 642                 return;
 643
 644         /* if not, we're out of options unless we're LVDS, default to 6bpc */
 645         connector->display_info.bpc = 6;
 646         if (nv_encoder->dcb->type != OUTPUT_LVDS)
 647                 return;
 648
 649         /* LVDS: panel straps */
 650         if (bios->fp_no_ddc) {
 651                 if (bios->fp.if_is_24bit)
 652                         connector->display_info.bpc = 8;
 653                 return;
 654         }
 655
 656         /* LVDS: DDC panel, need to first determine the number of links to
 657          * know which if_is_24bit flag to check...
 658          */
 659         if (nv_connector->edid &&
 660             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 661                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 662         else
 663                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 664
 665         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 666             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 667                 connector->display_info.bpc = 8;
 668 }
 669
 670 static int
 671 nouveau_connector_get_modes(struct drm_connector *connector)
 672 {
 673         struct drm_device *dev = connector->dev;
 674         struct drm_nouveau_private *dev_priv = dev->dev_private;
 675         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 676         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 677         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 678         int ret = 0;
 679
 680         /* destroy the native mode, the attached monitor could have changed.
 681          */
 682         if (nv_connector->native_mode) {
 683                 drm_mode_destroy(dev, nv_connector->native_mode);
 684                 nv_connector->native_mode = NULL;
 685         }
 686
 687         if (nv_connector->edid)
 688                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 689         else
 690         if (nv_encoder->dcb->type == OUTPUT_LVDS &&
 691             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 692              dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 693                 struct drm_display_mode mode;
 694
 695                 nouveau_bios_fp_mode(dev, &mode);
 696                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 697         }
 698
 699         /* Determine display colour depth for everything except LVDS now,
 700          * DP requires this before mode_valid() is called.
 701          */
 702         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 703                 nouveau_connector_detect_depth(connector);
 704
 705         /* Find the native mode if this is a digital panel, if we didn't
 706          * find any modes through DDC previously add the native mode to
 707          * the list of modes.
 708          */
 709         if (!nv_connector->native_mode)
 710                 nv_connector->native_mode =
 711                         nouveau_connector_native_mode(connector);
 712         if (ret == 0 && nv_connector->native_mode) {
 713                 struct drm_display_mode *mode;
 714
 715                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 716                 drm_mode_probed_add(connector, mode);
 717                 ret = 1;
 718         }
 719
 720         /* Determine LVDS colour depth, must happen after determining
 721          * "native" mode as some VBIOS tables require us to use the
 722          * pixel clock as part of the lookup...
 723          */
 724         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 725                 nouveau_connector_detect_depth(connector);
 726
 727         if (nv_encoder->dcb->type == OUTPUT_TV)
 728                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 729
 730         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 731             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 732             nv_connector->type == DCB_CONNECTOR_eDP)
 733                 ret += nouveau_connector_scaler_modes_add(connector);
 734
 735         return ret;
 736 }
 737
 738 static unsigned
 739 get_tmds_link_bandwidth(struct drm_connector *connector)
 740 {
 741         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 742         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 743         struct dcb_entry *dcb = nv_connector->detected_encoder->dcb;
 744
 745         if (dcb->location != DCB_LOC_ON_CHIP ||
 746             dev_priv->chipset >= 0x46)
 747                 return 165000;
 748         else if (dev_priv->chipset >= 0x40)
 749                 return 155000;
 750         else if (dev_priv->chipset >= 0x18)
 751                 return 135000;
 752         else
 753                 return 112000;
 754 }
 755
 756 static int
 757 nouveau_connector_mode_valid(struct drm_connector *connector,
 758                              struct drm_display_mode *mode)
 759 {
 760         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 761         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 762         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 763         unsigned min_clock = 25000, max_clock = min_clock;
 764         unsigned clock = mode->clock;
 765
 766         switch (nv_encoder->dcb->type) {
 767         case OUTPUT_LVDS:
 768                 if (nv_connector->native_mode &&
 769                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 770                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 771                         return MODE_PANEL;
 772
 773                 min_clock = 0;
 774                 max_clock = 400000;
 775                 break;
 776         case OUTPUT_TMDS:
 777                 max_clock = get_tmds_link_bandwidth(connector);
 778                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 779                         max_clock *= 2;
 780                 break;
 781         case OUTPUT_ANALOG:
 782                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 783                 if (!max_clock)
 784                         max_clock = 350000;
 785                 break;
 786         case OUTPUT_TV:
 787                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 788         case OUTPUT_DP:
 789                 max_clock  = nv_encoder->dp.link_nr;
 790                 max_clock *= nv_encoder->dp.link_bw;
 791                 clock = clock * (connector->display_info.bpc * 3) / 10;
 792                 break;
 793         default:
 794                 BUG_ON(1);
 795                 return MODE_BAD;
 796         }
 797
 798         if (clock < min_clock)
 799                 return MODE_CLOCK_LOW;
 800
 801         if (clock > max_clock)
 802                 return MODE_CLOCK_HIGH;
 803
 804         return MODE_OK;
 805 }
 806
 807 static struct drm_encoder *
 808 nouveau_connector_best_encoder(struct drm_connector *connector)
 809 {
 810         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 811
 812         if (nv_connector->detected_encoder)
 813                 return to_drm_encoder(nv_connector->detected_encoder);
 814
 815         return NULL;
 816 }
 817
 818 static const struct drm_connector_helper_funcs
 819 nouveau_connector_helper_funcs = {
 820         .get_modes = nouveau_connector_get_modes,
 821         .mode_valid = nouveau_connector_mode_valid,
 822         .best_encoder = nouveau_connector_best_encoder,
 823 };
 824
 825 static const struct drm_connector_funcs
 826 nouveau_connector_funcs = {
 827         .dpms = drm_helper_connector_dpms,
 828         .save = NULL,
 829         .restore = NULL,
 830         .detect = nouveau_connector_detect,
 831         .destroy = nouveau_connector_destroy,
 832         .fill_modes = drm_helper_probe_single_connector_modes,
 833         .set_property = nouveau_connector_set_property,
 834         .force = nouveau_connector_force
 835 };
 836
 837 static const struct drm_connector_funcs
 838 nouveau_connector_funcs_lvds = {
 839         .dpms = drm_helper_connector_dpms,
 840         .save = NULL,
 841         .restore = NULL,
 842         .detect = nouveau_connector_detect_lvds,
 843         .destroy = nouveau_connector_destroy,
 844         .fill_modes = drm_helper_probe_single_connector_modes,
 845         .set_property = nouveau_connector_set_property,
 846         .force = nouveau_connector_force
 847 };
 848
 849 static int
 850 drm_conntype_from_dcb(enum dcb_connector_type dcb)
 851 {
 852         switch (dcb) {
 853         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
 854         case DCB_CONNECTOR_TV_0     :
 855         case DCB_CONNECTOR_TV_1     :
 856         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
 857         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
 858         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
 859         case DCB_CONNECTOR_LVDS     :
 860         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
 861         case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
 862         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
 863         case DCB_CONNECTOR_HDMI_0   :
 864         case DCB_CONNECTOR_HDMI_1   : return DRM_MODE_CONNECTOR_HDMIA;
 865         default:
 866                 break;
 867         }
 868
 869         return DRM_MODE_CONNECTOR_Unknown;
 870 }
 871
 872 struct drm_connector *
 873 nouveau_connector_create(struct drm_device *dev, int index)
 874 {
 875         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 876         struct drm_nouveau_private *dev_priv = dev->dev_private;
 877         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 878         struct nouveau_connector *nv_connector = NULL;
 879         struct drm_connector *connector;
 880         int type, ret = 0;
 881         bool dummy;
 882
 883         NV_DEBUG_KMS(dev, "\n");
 884
 885         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 886                 nv_connector = nouveau_connector(connector);
 887                 if (nv_connector->index == index)
 888                         return connector;
 889         }
 890
 891         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 892         if (!nv_connector)
 893                 return ERR_PTR(-ENOMEM);
 894
 895         connector = &nv_connector->base;
 896         nv_connector->index = index;
 897
 898         /* attempt to parse vbios connector type and hotplug gpio */
 899         nv_connector->dcb = dcb_conn(dev, index);
 900         if (nv_connector->dcb) {
 901                 static const u8 hpd[16] = {
 902                         0xff, 0x07, 0x08, 0xff, 0xff, 0x51, 0x52, 0xff,
 903                         0xff, 0xff, 0xff, 0xff, 0xff, 0x5e, 0x5f, 0x60,
 904                 };
 905
 906                 u32 entry = ROM16(nv_connector->dcb[0]);
 907                 if (dcb_conntab(dev)[3] >= 4)
 908                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
 909
 910                 nv_connector->hpd = ffs((entry & 0x07033000) >> 12);
 911                 nv_connector->hpd = hpd[nv_connector->hpd];
 912
 913                 nv_connector->type = nv_connector->dcb[0];
 914                 if (drm_conntype_from_dcb(nv_connector->type) ==
 915                                           DRM_MODE_CONNECTOR_Unknown) {
 916                         NV_WARN(dev, "unknown connector type %02x\n",
 917                                 nv_connector->type);
 918                         nv_connector->type = DCB_CONNECTOR_NONE;
 919                 }
 920
 921                 /* Gigabyte NX85T */
 922                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
 923                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
 924                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 925                 }
 926
 927                 /* Gigabyte GV-NX86T512H */
 928                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
 929                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
 930                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 931                 }
 932         } else {
 933                 nv_connector->type = DCB_CONNECTOR_NONE;
 934                 nv_connector->hpd = DCB_GPIO_UNUSED;
 935         }
 936
 937         /* no vbios data, or an unknown dcb connector type - attempt to
 938          * figure out something suitable ourselves
 939          */
 940         if (nv_connector->type == DCB_CONNECTOR_NONE) {
 941                 struct drm_nouveau_private *dev_priv = dev->dev_private;
 942                 struct dcb_table *dcbt = &dev_priv->vbios.dcb;
 943                 u32 encoders = 0;
 944                 int i;
 945
 946                 for (i = 0; i < dcbt->entries; i++) {
 947                         if (dcbt->entry[i].connector == nv_connector->index)
 948                                 encoders |= (1 << dcbt->entry[i].type);
 949                 }
 950
 951                 if (encoders & (1 << OUTPUT_DP)) {
 952                         if (encoders & (1 << OUTPUT_TMDS))
 953                                 nv_connector->type = DCB_CONNECTOR_DP;
 954                         else
 955                                 nv_connector->type = DCB_CONNECTOR_eDP;
 956                 } else
 957                 if (encoders & (1 << OUTPUT_TMDS)) {
 958                         if (encoders & (1 << OUTPUT_ANALOG))
 959                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 960                         else
 961                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
 962                 } else
 963                 if (encoders & (1 << OUTPUT_ANALOG)) {
 964                         nv_connector->type = DCB_CONNECTOR_VGA;
 965                 } else
 966                 if (encoders & (1 << OUTPUT_LVDS)) {
 967                         nv_connector->type = DCB_CONNECTOR_LVDS;
 968                 } else
 969                 if (encoders & (1 << OUTPUT_TV)) {
 970                         nv_connector->type = DCB_CONNECTOR_TV_0;
 971                 }
 972         }
 973
 974         type = drm_conntype_from_dcb(nv_connector->type);
 975         if (type == DRM_MODE_CONNECTOR_LVDS) {
 976                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
 977                 if (ret) {
 978                         NV_ERROR(dev, "Error parsing LVDS table, disabling\n");
 979                         kfree(nv_connector);
 980                         return ERR_PTR(ret);
 981                 }
 982
 983                 funcs = &nouveau_connector_funcs_lvds;
 984         } else {
 985                 funcs = &nouveau_connector_funcs;
 986         }
 987
 988         /* defaults, will get overridden in detect() */
 989         connector->interlace_allowed = false;
 990         connector->doublescan_allowed = false;
 991
 992         drm_connector_init(dev, connector, funcs, type);
 993         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 994
 995         /* Init DVI-I specific properties */
 996         if (nv_connector->type == DCB_CONNECTOR_DVI_I)
 997                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 998
 999         /* Add overscan compensation options to digital outputs */
1000         if (disp->underscan_property &&
1001             (nv_connector->type == DCB_CONNECTOR_DVI_D ||
1002              nv_connector->type == DCB_CONNECTOR_DVI_I ||
1003              nv_connector->type == DCB_CONNECTOR_HDMI_0 ||
1004              nv_connector->type == DCB_CONNECTOR_HDMI_1 ||
1005              nv_connector->type == DCB_CONNECTOR_DP)) {
1006                 drm_connector_attach_property(connector,
1007                                               disp->underscan_property,
1008                                               UNDERSCAN_OFF);
1009                 drm_connector_attach_property(connector,
1010                                               disp->underscan_hborder_property,
1011                                               0);
1012                 drm_connector_attach_property(connector,
1013                                               disp->underscan_vborder_property,
1014                                               0);
1015         }
1016
1017         switch (nv_connector->type) {
1018         case DCB_CONNECTOR_VGA:
1019                 if (dev_priv->card_type >= NV_50) {
1020                         drm_connector_attach_property(connector,
1021                                         dev->mode_config.scaling_mode_property,
1022                                         nv_connector->scaling_mode);
1023                 }
1024                 /* fall-through */
1025         case DCB_CONNECTOR_TV_0:
1026         case DCB_CONNECTOR_TV_1:
1027         case DCB_CONNECTOR_TV_3:
1028                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1029                 break;
1030         default:
1031                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1032
1033                 drm_connector_attach_property(connector,
1034                                 dev->mode_config.scaling_mode_property,
1035                                 nv_connector->scaling_mode);
1036                 if (disp->dithering_mode) {
1037                         nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1038                         drm_connector_attach_property(connector,
1039                                                 disp->dithering_mode,
1040                                                 nv_connector->dithering_mode);
1041                 }
1042                 if (disp->dithering_depth) {
1043                         nv_connector->dithering_depth = DITHERING_DEPTH_AUTO;
1044                         drm_connector_attach_property(connector,
1045                                                 disp->dithering_depth,
1046                                                 nv_connector->dithering_depth);
1047                 }
1048                 break;
1049         }
1050
1051         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1052         if (nv_connector->hpd != DCB_GPIO_UNUSED) {
1053                 ret = nouveau_gpio_isr_add(dev, 0, nv_connector->hpd, 0xff,
1054                                            nouveau_connector_hotplug,
1055                                            connector);
1056                 if (ret == 0)
1057                         connector->polled = DRM_CONNECTOR_POLL_HPD;
1058         }
1059
1060         drm_sysfs_connector_add(connector);
1061         return connector;
1062 }
1063
1064 static void
1065 nouveau_connector_hotplug(void *data, int plugged)
1066 {
1067         struct drm_connector *connector = data;
1068         struct drm_device *dev = connector->dev;
1069
1070         NV_DEBUG(dev, "%splugged %s\n", plugged ? "" : "un",
1071                  drm_get_connector_name(connector));
1072
1073         if (plugged)
1074                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1075         else
1076                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1077
1078         drm_helper_hpd_irq_event(dev);
1079 }