drivers/gpu/drm/nouveau/nouveau_connector.c

   1 /*
   2  * Copyright (C) 2008 Maarten Maathuis.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include <acpi/button.h>
  28
  29 #include "drmP.h"
  30 #include "drm_edid.h"
  31 #include "drm_crtc_helper.h"
  32
  33 #include "nouveau_reg.h"
  34 #include "nouveau_drv.h"
  35 #include "nouveau_encoder.h"
  36 #include "nouveau_crtc.h"
  37 #include "nouveau_connector.h"
  38 #include "nouveau_hw.h"
  39
  40 static void nouveau_connector_hotplug(void *, int);
  41
  42 static struct nouveau_encoder *
  43 find_encoder_by_type(struct drm_connector *connector, int type)
  44 {
  45         struct drm_device *dev = connector->dev;
  46         struct nouveau_encoder *nv_encoder;
  47         struct drm_mode_object *obj;
  48         int i, id;
  49
  50         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  51                 id = connector->encoder_ids[i];
  52                 if (!id)
  53                         break;
  54
  55                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  56                 if (!obj)
  57                         continue;
  58                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  59
  60                 if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
  61                         return nv_encoder;
  62         }
  63
  64         return NULL;
  65 }
  66
  67 struct nouveau_connector *
  68 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  69 {
  70         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  71         struct drm_connector *drm_connector;
  72
  73         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  74                 if (drm_connector->encoder == to_drm_encoder(encoder))
  75                         return nouveau_connector(drm_connector);
  76         }
  77
  78         return NULL;
  79 }
  80
  81 /*TODO: This could use improvement, and learn to handle the fixed
  82  *      BIOS tables etc.  It's fine currently, for its only user.
  83  */
  84 int
  85 nouveau_connector_bpp(struct drm_connector *connector)
  86 {
  87         struct nouveau_connector *nv_connector = nouveau_connector(connector);
  88
  89         if (nv_connector->edid && nv_connector->edid->revision >= 4) {
  90                 u8 bpc = ((nv_connector->edid->input & 0x70) >> 3) + 4;
  91                 if (bpc > 4)
  92                         return bpc;
  93         }
  94
  95         return 18;
  96 }
  97
  98 static void
  99 nouveau_connector_destroy(struct drm_connector *connector)
 100 {
 101         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 102         struct drm_nouveau_private *dev_priv;
 103         struct nouveau_gpio_engine *pgpio;
 104         struct drm_device *dev;
 105
 106         if (!nv_connector)
 107                 return;
 108
 109         dev = nv_connector->base.dev;
 110         dev_priv = dev->dev_private;
 111         NV_DEBUG_KMS(dev, "\n");
 112
 113         pgpio = &dev_priv->engine.gpio;
 114         if (pgpio->irq_unregister) {
 115                 pgpio->irq_unregister(dev, nv_connector->dcb->gpio_tag,
 116                                       nouveau_connector_hotplug, connector);
 117         }
 118
 119         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
 120             connector->connector_type == DRM_MODE_CONNECTOR_eDP)
 121                 nouveau_backlight_exit(connector);
 122
 123         kfree(nv_connector->edid);
 124         drm_sysfs_connector_remove(connector);
 125         drm_connector_cleanup(connector);
 126         kfree(connector);
 127 }
 128
 129 static struct nouveau_i2c_chan *
 130 nouveau_connector_ddc_detect(struct drm_connector *connector,
 131                              struct nouveau_encoder **pnv_encoder)
 132 {
 133         struct drm_device *dev = connector->dev;
 134         int i;
 135
 136         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 137                 struct nouveau_i2c_chan *i2c = NULL;
 138                 struct nouveau_encoder *nv_encoder;
 139                 struct drm_mode_object *obj;
 140                 int id;
 141
 142                 id = connector->encoder_ids[i];
 143                 if (!id)
 144                         break;
 145
 146                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 147                 if (!obj)
 148                         continue;
 149                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 150
 151                 if (nv_encoder->dcb->i2c_index < 0xf)
 152                         i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
 153
 154                 if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
 155                         *pnv_encoder = nv_encoder;
 156                         return i2c;
 157                 }
 158         }
 159
 160         return NULL;
 161 }
 162
 163 static struct nouveau_encoder *
 164 nouveau_connector_of_detect(struct drm_connector *connector)
 165 {
 166 #ifdef __powerpc__
 167         struct drm_device *dev = connector->dev;
 168         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 169         struct nouveau_encoder *nv_encoder;
 170         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 171
 172         if (!dn ||
 173             !((nv_encoder = find_encoder_by_type(connector, OUTPUT_TMDS)) ||
 174               (nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG))))
 175                 return NULL;
 176
 177         for_each_child_of_node(dn, cn) {
 178                 const char *name = of_get_property(cn, "name", NULL);
 179                 const void *edid = of_get_property(cn, "EDID", NULL);
 180                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 181
 182                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 183                         nv_connector->edid =
 184                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 185                         of_node_put(cn);
 186                         return nv_encoder;
 187                 }
 188         }
 189 #endif
 190         return NULL;
 191 }
 192
 193 static void
 194 nouveau_connector_set_encoder(struct drm_connector *connector,
 195                               struct nouveau_encoder *nv_encoder)
 196 {
 197         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 198         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 199         struct drm_device *dev = connector->dev;
 200
 201         if (nv_connector->detected_encoder == nv_encoder)
 202                 return;
 203         nv_connector->detected_encoder = nv_encoder;
 204
 205         if (nv_encoder->dcb->type == OUTPUT_LVDS ||
 206             nv_encoder->dcb->type == OUTPUT_TMDS) {
 207                 connector->doublescan_allowed = false;
 208                 connector->interlace_allowed = false;
 209         } else {
 210                 connector->doublescan_allowed = true;
 211                 if (dev_priv->card_type == NV_20 ||
 212                    (dev_priv->card_type == NV_10 &&
 213                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 214                     (dev->pci_device & 0x0ff0) != 0x0150))
 215                         /* HW is broken */
 216                         connector->interlace_allowed = false;
 217                 else
 218                         connector->interlace_allowed = true;
 219         }
 220
 221         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 222                 drm_connector_property_set_value(connector,
 223                         dev->mode_config.dvi_i_subconnector_property,
 224                         nv_encoder->dcb->type == OUTPUT_TMDS ?
 225                         DRM_MODE_SUBCONNECTOR_DVID :
 226                         DRM_MODE_SUBCONNECTOR_DVIA);
 227         }
 228 }
 229
 230 static enum drm_connector_status
 231 nouveau_connector_detect(struct drm_connector *connector, bool force)
 232 {
 233         struct drm_device *dev = connector->dev;
 234         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 235         struct nouveau_encoder *nv_encoder = NULL;
 236         struct nouveau_i2c_chan *i2c;
 237         int type;
 238
 239         /* Cleanup the previous EDID block. */
 240         if (nv_connector->edid) {
 241                 drm_mode_connector_update_edid_property(connector, NULL);
 242                 kfree(nv_connector->edid);
 243                 nv_connector->edid = NULL;
 244         }
 245
 246         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 247         if (i2c) {
 248                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 249                 drm_mode_connector_update_edid_property(connector,
 250                                                         nv_connector->edid);
 251                 if (!nv_connector->edid) {
 252                         NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
 253                                  drm_get_connector_name(connector));
 254                         goto detect_analog;
 255                 }
 256
 257                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 258                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 259                         NV_ERROR(dev, "Detected %s, but failed init\n",
 260                                  drm_get_connector_name(connector));
 261                         return connector_status_disconnected;
 262                 }
 263
 264                 /* Override encoder type for DVI-I based on whether EDID
 265                  * says the display is digital or analog, both use the
 266                  * same i2c channel so the value returned from ddc_detect
 267                  * isn't necessarily correct.
 268                  */
 269                 if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 270                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 271                                 type = OUTPUT_TMDS;
 272                         else
 273                                 type = OUTPUT_ANALOG;
 274
 275                         nv_encoder = find_encoder_by_type(connector, type);
 276                         if (!nv_encoder) {
 277                                 NV_ERROR(dev, "Detected %d encoder on %s, "
 278                                               "but no object!\n", type,
 279                                          drm_get_connector_name(connector));
 280                                 return connector_status_disconnected;
 281                         }
 282                 }
 283
 284                 nouveau_connector_set_encoder(connector, nv_encoder);
 285                 return connector_status_connected;
 286         }
 287
 288         nv_encoder = nouveau_connector_of_detect(connector);
 289         if (nv_encoder) {
 290                 nouveau_connector_set_encoder(connector, nv_encoder);
 291                 return connector_status_connected;
 292         }
 293
 294 detect_analog:
 295         nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
 296         if (!nv_encoder && !nouveau_tv_disable)
 297                 nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
 298         if (nv_encoder && force) {
 299                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 300                 struct drm_encoder_helper_funcs *helper =
 301                                                 encoder->helper_private;
 302
 303                 if (helper->detect(encoder, connector) ==
 304                                                 connector_status_connected) {
 305                         nouveau_connector_set_encoder(connector, nv_encoder);
 306                         return connector_status_connected;
 307                 }
 308
 309         }
 310
 311         return connector_status_disconnected;
 312 }
 313
 314 static enum drm_connector_status
 315 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 316 {
 317         struct drm_device *dev = connector->dev;
 318         struct drm_nouveau_private *dev_priv = dev->dev_private;
 319         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 320         struct nouveau_encoder *nv_encoder = NULL;
 321         enum drm_connector_status status = connector_status_disconnected;
 322
 323         /* Cleanup the previous EDID block. */
 324         if (nv_connector->edid) {
 325                 drm_mode_connector_update_edid_property(connector, NULL);
 326                 kfree(nv_connector->edid);
 327                 nv_connector->edid = NULL;
 328         }
 329
 330         nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 331         if (!nv_encoder)
 332                 return connector_status_disconnected;
 333
 334         /* Try retrieving EDID via DDC */
 335         if (!dev_priv->vbios.fp_no_ddc) {
 336                 status = nouveau_connector_detect(connector, force);
 337                 if (status == connector_status_connected)
 338                         goto out;
 339         }
 340
 341         /* On some laptops (Sony, i'm looking at you) there appears to
 342          * be no direct way of accessing the panel's EDID.  The only
 343          * option available to us appears to be to ask ACPI for help..
 344          *
 345          * It's important this check's before trying straps, one of the
 346          * said manufacturer's laptops are configured in such a way
 347          * the nouveau decides an entry in the VBIOS FP mode table is
 348          * valid - it's not (rh#613284)
 349          */
 350         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 351                 if (!nouveau_acpi_edid(dev, connector)) {
 352                         status = connector_status_connected;
 353                         goto out;
 354                 }
 355         }
 356
 357         /* If no EDID found above, and the VBIOS indicates a hardcoded
 358          * modeline is avalilable for the panel, set it as the panel's
 359          * native mode and exit.
 360          */
 361         if (nouveau_bios_fp_mode(dev, NULL) && (dev_priv->vbios.fp_no_ddc ||
 362             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 363                 status = connector_status_connected;
 364                 goto out;
 365         }
 366
 367         /* Still nothing, some VBIOS images have a hardcoded EDID block
 368          * stored for the panel stored in them.
 369          */
 370         if (!dev_priv->vbios.fp_no_ddc) {
 371                 struct edid *edid =
 372                         (struct edid *)nouveau_bios_embedded_edid(dev);
 373                 if (edid) {
 374                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 375                         *(nv_connector->edid) = *edid;
 376                         status = connector_status_connected;
 377                 }
 378         }
 379
 380 out:
 381 #if defined(CONFIG_ACPI_BUTTON) || \
 382         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 383         if (status == connector_status_connected &&
 384             !nouveau_ignorelid && !acpi_lid_open())
 385                 status = connector_status_unknown;
 386 #endif
 387
 388         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 389         nouveau_connector_set_encoder(connector, nv_encoder);
 390         return status;
 391 }
 392
 393 static void
 394 nouveau_connector_force(struct drm_connector *connector)
 395 {
 396         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 397         struct nouveau_encoder *nv_encoder;
 398         int type;
 399
 400         if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
 401                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 402                         type = OUTPUT_TMDS;
 403                 else
 404                         type = OUTPUT_ANALOG;
 405         } else
 406                 type = OUTPUT_ANY;
 407
 408         nv_encoder = find_encoder_by_type(connector, type);
 409         if (!nv_encoder) {
 410                 NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
 411                          drm_get_connector_name(connector));
 412                 connector->status = connector_status_disconnected;
 413                 return;
 414         }
 415
 416         nouveau_connector_set_encoder(connector, nv_encoder);
 417 }
 418
 419 static int
 420 nouveau_connector_set_property(struct drm_connector *connector,
 421                                struct drm_property *property, uint64_t value)
 422 {
 423         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 424         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 425         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 426         struct drm_device *dev = connector->dev;
 427         int ret;
 428
 429         /* Scaling mode */
 430         if (property == dev->mode_config.scaling_mode_property) {
 431                 struct nouveau_crtc *nv_crtc = NULL;
 432                 bool modeset = false;
 433
 434                 switch (value) {
 435                 case DRM_MODE_SCALE_NONE:
 436                 case DRM_MODE_SCALE_FULLSCREEN:
 437                 case DRM_MODE_SCALE_CENTER:
 438                 case DRM_MODE_SCALE_ASPECT:
 439                         break;
 440                 default:
 441                         return -EINVAL;
 442                 }
 443
 444                 /* LVDS always needs gpu scaling */
 445                 if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
 446                     value == DRM_MODE_SCALE_NONE)
 447                         return -EINVAL;
 448
 449                 /* Changing between GPU and panel scaling requires a full
 450                  * modeset
 451                  */
 452                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 453                     (value == DRM_MODE_SCALE_NONE))
 454                         modeset = true;
 455                 nv_connector->scaling_mode = value;
 456
 457                 if (connector->encoder && connector->encoder->crtc)
 458                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 459                 if (!nv_crtc)
 460                         return 0;
 461
 462                 if (modeset || !nv_crtc->set_scale) {
 463                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 464                                                         &nv_crtc->base.mode,
 465                                                         nv_crtc->base.x,
 466                                                         nv_crtc->base.y, NULL);
 467                         if (!ret)
 468                                 return -EINVAL;
 469                 } else {
 470                         ret = nv_crtc->set_scale(nv_crtc, value, true);
 471                         if (ret)
 472                                 return ret;
 473                 }
 474
 475                 return 0;
 476         }
 477
 478         /* Dithering */
 479         if (property == dev->mode_config.dithering_mode_property) {
 480                 struct nouveau_crtc *nv_crtc = NULL;
 481
 482                 if (value == DRM_MODE_DITHERING_ON)
 483                         nv_connector->use_dithering = true;
 484                 else
 485                         nv_connector->use_dithering = false;
 486
 487                 if (connector->encoder && connector->encoder->crtc)
 488                         nv_crtc = nouveau_crtc(connector->encoder->crtc);
 489
 490                 if (!nv_crtc || !nv_crtc->set_dither)
 491                         return 0;
 492
 493                 return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
 494                                            true);
 495         }
 496
 497         if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
 498                 return get_slave_funcs(encoder)->set_property(
 499                         encoder, connector, property, value);
 500
 501         return -EINVAL;
 502 }
 503
 504 static struct drm_display_mode *
 505 nouveau_connector_native_mode(struct drm_connector *connector)
 506 {
 507         struct drm_connector_helper_funcs *helper = connector->helper_private;
 508         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 509         struct drm_device *dev = connector->dev;
 510         struct drm_display_mode *mode, *largest = NULL;
 511         int high_w = 0, high_h = 0, high_v = 0;
 512
 513         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 514                 mode->vrefresh = drm_mode_vrefresh(mode);
 515                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 516                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 517                         continue;
 518
 519                 /* Use preferred mode if there is one.. */
 520                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 521                         NV_DEBUG_KMS(dev, "native mode from preferred\n");
 522                         return drm_mode_duplicate(dev, mode);
 523                 }
 524
 525                 /* Otherwise, take the resolution with the largest width, then
 526                  * height, then vertical refresh
 527                  */
 528                 if (mode->hdisplay < high_w)
 529                         continue;
 530
 531                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 532                         continue;
 533
 534                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 535                     mode->vrefresh < high_v)
 536                         continue;
 537
 538                 high_w = mode->hdisplay;
 539                 high_h = mode->vdisplay;
 540                 high_v = mode->vrefresh;
 541                 largest = mode;
 542         }
 543
 544         NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
 545                       high_w, high_h, high_v);
 546         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 547 }
 548
 549 struct moderec {
 550         int hdisplay;
 551         int vdisplay;
 552 };
 553
 554 static struct moderec scaler_modes[] = {
 555         { 1920, 1200 },
 556         { 1920, 1080 },
 557         { 1680, 1050 },
 558         { 1600, 1200 },
 559         { 1400, 1050 },
 560         { 1280, 1024 },
 561         { 1280, 960 },
 562         { 1152, 864 },
 563         { 1024, 768 },
 564         { 800, 600 },
 565         { 720, 400 },
 566         { 640, 480 },
 567         { 640, 400 },
 568         { 640, 350 },
 569         {}
 570 };
 571
 572 static int
 573 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 574 {
 575         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 576         struct drm_display_mode *native = nv_connector->native_mode, *m;
 577         struct drm_device *dev = connector->dev;
 578         struct moderec *mode = &scaler_modes[0];
 579         int modes = 0;
 580
 581         if (!native)
 582                 return 0;
 583
 584         while (mode->hdisplay) {
 585                 if (mode->hdisplay <= native->hdisplay &&
 586                     mode->vdisplay <= native->vdisplay) {
 587                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 588                                          drm_mode_vrefresh(native), false,
 589                                          false, false);
 590                         if (!m)
 591                                 continue;
 592
 593                         m->type |= DRM_MODE_TYPE_DRIVER;
 594
 595                         drm_mode_probed_add(connector, m);
 596                         modes++;
 597                 }
 598
 599                 mode++;
 600         }
 601
 602         return modes;
 603 }
 604
 605 static int
 606 nouveau_connector_get_modes(struct drm_connector *connector)
 607 {
 608         struct drm_device *dev = connector->dev;
 609         struct drm_nouveau_private *dev_priv = dev->dev_private;
 610         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 611         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 612         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 613         int ret = 0;
 614
 615         /* destroy the native mode, the attached monitor could have changed.
 616          */
 617         if (nv_connector->native_mode) {
 618                 drm_mode_destroy(dev, nv_connector->native_mode);
 619                 nv_connector->native_mode = NULL;
 620         }
 621
 622         if (nv_connector->edid)
 623                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 624         else
 625         if (nv_encoder->dcb->type == OUTPUT_LVDS &&
 626             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 627              dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 628                 struct drm_display_mode mode;
 629
 630                 nouveau_bios_fp_mode(dev, &mode);
 631                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 632         }
 633
 634         /* Find the native mode if this is a digital panel, if we didn't
 635          * find any modes through DDC previously add the native mode to
 636          * the list of modes.
 637          */
 638         if (!nv_connector->native_mode)
 639                 nv_connector->native_mode =
 640                         nouveau_connector_native_mode(connector);
 641         if (ret == 0 && nv_connector->native_mode) {
 642                 struct drm_display_mode *mode;
 643
 644                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 645                 drm_mode_probed_add(connector, mode);
 646                 ret = 1;
 647         }
 648
 649         if (nv_encoder->dcb->type == OUTPUT_TV)
 650                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 651
 652         if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS ||
 653             nv_connector->dcb->type == DCB_CONNECTOR_eDP)
 654                 ret += nouveau_connector_scaler_modes_add(connector);
 655
 656         return ret;
 657 }
 658
 659 static unsigned
 660 get_tmds_link_bandwidth(struct drm_connector *connector)
 661 {
 662         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 663         struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
 664         struct dcb_entry *dcb = nv_connector->detected_encoder->dcb;
 665
 666         if (dcb->location != DCB_LOC_ON_CHIP ||
 667             dev_priv->chipset >= 0x46)
 668                 return 165000;
 669         else if (dev_priv->chipset >= 0x40)
 670                 return 155000;
 671         else if (dev_priv->chipset >= 0x18)
 672                 return 135000;
 673         else
 674                 return 112000;
 675 }
 676
 677 static int
 678 nouveau_connector_mode_valid(struct drm_connector *connector,
 679                              struct drm_display_mode *mode)
 680 {
 681         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 682         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 683         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 684         unsigned min_clock = 25000, max_clock = min_clock;
 685         unsigned clock = mode->clock;
 686
 687         switch (nv_encoder->dcb->type) {
 688         case OUTPUT_LVDS:
 689                 if (nv_connector->native_mode &&
 690                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 691                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 692                         return MODE_PANEL;
 693
 694                 min_clock = 0;
 695                 max_clock = 400000;
 696                 break;
 697         case OUTPUT_TMDS:
 698                 max_clock = get_tmds_link_bandwidth(connector);
 699                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 700                         max_clock *= 2;
 701                 break;
 702         case OUTPUT_ANALOG:
 703                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 704                 if (!max_clock)
 705                         max_clock = 350000;
 706                 break;
 707         case OUTPUT_TV:
 708                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 709         case OUTPUT_DP:
 710                 if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
 711                         max_clock = nv_encoder->dp.link_nr * 270000;
 712                 else
 713                         max_clock = nv_encoder->dp.link_nr * 162000;
 714
 715                 clock = clock * nouveau_connector_bpp(connector) / 8;
 716                 break;
 717         default:
 718                 BUG_ON(1);
 719                 return MODE_BAD;
 720         }
 721
 722         if (clock < min_clock)
 723                 return MODE_CLOCK_LOW;
 724
 725         if (clock > max_clock)
 726                 return MODE_CLOCK_HIGH;
 727
 728         return MODE_OK;
 729 }
 730
 731 static struct drm_encoder *
 732 nouveau_connector_best_encoder(struct drm_connector *connector)
 733 {
 734         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 735
 736         if (nv_connector->detected_encoder)
 737                 return to_drm_encoder(nv_connector->detected_encoder);
 738
 739         return NULL;
 740 }
 741
 742 static const struct drm_connector_helper_funcs
 743 nouveau_connector_helper_funcs = {
 744         .get_modes = nouveau_connector_get_modes,
 745         .mode_valid = nouveau_connector_mode_valid,
 746         .best_encoder = nouveau_connector_best_encoder,
 747 };
 748
 749 static const struct drm_connector_funcs
 750 nouveau_connector_funcs = {
 751         .dpms = drm_helper_connector_dpms,
 752         .save = NULL,
 753         .restore = NULL,
 754         .detect = nouveau_connector_detect,
 755         .destroy = nouveau_connector_destroy,
 756         .fill_modes = drm_helper_probe_single_connector_modes,
 757         .set_property = nouveau_connector_set_property,
 758         .force = nouveau_connector_force
 759 };
 760
 761 static const struct drm_connector_funcs
 762 nouveau_connector_funcs_lvds = {
 763         .dpms = drm_helper_connector_dpms,
 764         .save = NULL,
 765         .restore = NULL,
 766         .detect = nouveau_connector_detect_lvds,
 767         .destroy = nouveau_connector_destroy,
 768         .fill_modes = drm_helper_probe_single_connector_modes,
 769         .set_property = nouveau_connector_set_property,
 770         .force = nouveau_connector_force
 771 };
 772
 773 struct drm_connector *
 774 nouveau_connector_create(struct drm_device *dev, int index)
 775 {
 776         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 777         struct drm_nouveau_private *dev_priv = dev->dev_private;
 778         struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio;
 779         struct nouveau_connector *nv_connector = NULL;
 780         struct dcb_connector_table_entry *dcb = NULL;
 781         struct drm_connector *connector;
 782         int type, ret = 0;
 783
 784         NV_DEBUG_KMS(dev, "\n");
 785
 786         if (index >= dev_priv->vbios.dcb.connector.entries)
 787                 return ERR_PTR(-EINVAL);
 788
 789         dcb = &dev_priv->vbios.dcb.connector.entry[index];
 790         if (dcb->drm)
 791                 return dcb->drm;
 792
 793         switch (dcb->type) {
 794         case DCB_CONNECTOR_VGA:
 795                 type = DRM_MODE_CONNECTOR_VGA;
 796                 break;
 797         case DCB_CONNECTOR_TV_0:
 798         case DCB_CONNECTOR_TV_1:
 799         case DCB_CONNECTOR_TV_3:
 800                 type = DRM_MODE_CONNECTOR_TV;
 801                 break;
 802         case DCB_CONNECTOR_DVI_I:
 803                 type = DRM_MODE_CONNECTOR_DVII;
 804                 break;
 805         case DCB_CONNECTOR_DVI_D:
 806                 type = DRM_MODE_CONNECTOR_DVID;
 807                 break;
 808         case DCB_CONNECTOR_HDMI_0:
 809         case DCB_CONNECTOR_HDMI_1:
 810                 type = DRM_MODE_CONNECTOR_HDMIA;
 811                 break;
 812         case DCB_CONNECTOR_LVDS:
 813                 type = DRM_MODE_CONNECTOR_LVDS;
 814                 funcs = &nouveau_connector_funcs_lvds;
 815                 break;
 816         case DCB_CONNECTOR_DP:
 817                 type = DRM_MODE_CONNECTOR_DisplayPort;
 818                 break;
 819         case DCB_CONNECTOR_eDP:
 820                 type = DRM_MODE_CONNECTOR_eDP;
 821                 break;
 822         default:
 823                 NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
 824                 return ERR_PTR(-EINVAL);
 825         }
 826
 827         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 828         if (!nv_connector)
 829                 return ERR_PTR(-ENOMEM);
 830         nv_connector->dcb = dcb;
 831         connector = &nv_connector->base;
 832
 833         /* defaults, will get overridden in detect() */
 834         connector->interlace_allowed = false;
 835         connector->doublescan_allowed = false;
 836
 837         drm_connector_init(dev, connector, funcs, type);
 838         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
 839
 840         /* Check if we need dithering enabled */
 841         if (dcb->type == DCB_CONNECTOR_LVDS) {
 842                 bool dummy, is_24bit = false;
 843
 844                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &is_24bit);
 845                 if (ret) {
 846                         NV_ERROR(dev, "Error parsing LVDS table, disabling "
 847                                  "LVDS\n");
 848                         goto fail;
 849                 }
 850
 851                 nv_connector->use_dithering = !is_24bit;
 852         }
 853
 854         /* Init DVI-I specific properties */
 855         if (dcb->type == DCB_CONNECTOR_DVI_I) {
 856                 drm_mode_create_dvi_i_properties(dev);
 857                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
 858                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
 859         }
 860
 861         switch (dcb->type) {
 862         case DCB_CONNECTOR_VGA:
 863                 if (dev_priv->card_type >= NV_50) {
 864                         drm_connector_attach_property(connector,
 865                                         dev->mode_config.scaling_mode_property,
 866                                         nv_connector->scaling_mode);
 867                 }
 868                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 869                 /* fall-through */
 870         case DCB_CONNECTOR_TV_0:
 871         case DCB_CONNECTOR_TV_1:
 872         case DCB_CONNECTOR_TV_3:
 873                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
 874                 break;
 875         default:
 876                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
 877
 878                 drm_connector_attach_property(connector,
 879                                 dev->mode_config.scaling_mode_property,
 880                                 nv_connector->scaling_mode);
 881                 drm_connector_attach_property(connector,
 882                                 dev->mode_config.dithering_mode_property,
 883                                 nv_connector->use_dithering ?
 884                                 DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 885
 886                 if (dcb->type != DCB_CONNECTOR_LVDS) {
 887                         if (dev_priv->card_type >= NV_50)
 888                                 connector->polled = DRM_CONNECTOR_POLL_HPD;
 889                         else
 890                                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 891                 }
 892                 break;
 893         }
 894
 895         if (pgpio->irq_register) {
 896                 pgpio->irq_register(dev, nv_connector->dcb->gpio_tag,
 897                                     nouveau_connector_hotplug, connector);
 898         }
 899
 900         drm_sysfs_connector_add(connector);
 901
 902         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
 903             connector->connector_type == DRM_MODE_CONNECTOR_eDP)
 904                 nouveau_backlight_init(connector);
 905
 906         dcb->drm = connector;
 907         return dcb->drm;
 908
 909 fail:
 910         drm_connector_cleanup(connector);
 911         kfree(connector);
 912         return ERR_PTR(ret);
 913
 914 }
 915
 916 static void
 917 nouveau_connector_hotplug(void *data, int plugged)
 918 {
 919         struct drm_connector *connector = data;
 920         struct drm_device *dev = connector->dev;
 921
 922         NV_INFO(dev, "%splugged %s\n", plugged ? "" : "un",
 923                 drm_get_connector_name(connector));
 924
 925         if (connector->encoder && connector->encoder->crtc &&
 926             connector->encoder->crtc->enabled) {
 927                 struct nouveau_encoder *nv_encoder = nouveau_encoder(connector->encoder);
 928                 struct drm_encoder_helper_funcs *helper =
 929                         connector->encoder->helper_private;
 930
 931                 if (nv_encoder->dcb->type == OUTPUT_DP) {
 932                         if (plugged)
 933                                 helper->dpms(connector->encoder, DRM_MODE_DPMS_ON);
 934                         else
 935                                 helper->dpms(connector->encoder, DRM_MODE_DPMS_OFF);
 936                 }
 937         }
 938
 939         drm_helper_hpd_irq_event(dev);
 940 }