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_drm.h"
  35 #include "nouveau_hw.h"
  36 #include "nouveau_acpi.h"
  37
  38 #include "nouveau_display.h"
  39 #include "nouveau_connector.h"
  40 #include "nouveau_encoder.h"
  41 #include "nouveau_crtc.h"
  42
  43 #include <subdev/i2c.h>
  44 #include <subdev/gpio.h>
  45
  46 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
  47 static int nouveau_tv_disable = 0;
  48 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
  49
  50 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
  51 static int nouveau_ignorelid = 0;
  52 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
  53
  54 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
  55 static int nouveau_duallink = 1;
  56 module_param_named(duallink, nouveau_duallink, int, 0400);
  57
  58 static void nouveau_connector_hotplug(void *, int);
  59
  60 struct nouveau_encoder *
  61 find_encoder(struct drm_connector *connector, int type)
  62 {
  63         struct drm_device *dev = connector->dev;
  64         struct nouveau_encoder *nv_encoder;
  65         struct drm_mode_object *obj;
  66         int i, id;
  67
  68         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  69                 id = connector->encoder_ids[i];
  70                 if (!id)
  71                         break;
  72
  73                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  74                 if (!obj)
  75                         continue;
  76                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  77
  78                 if (type == DCB_OUTPUT_ANY || nv_encoder->dcb->type == type)
  79                         return nv_encoder;
  80         }
  81
  82         return NULL;
  83 }
  84
  85 struct nouveau_connector *
  86 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  87 {
  88         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  89         struct drm_connector *drm_connector;
  90
  91         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  92                 if (drm_connector->encoder == to_drm_encoder(encoder))
  93                         return nouveau_connector(drm_connector);
  94         }
  95
  96         return NULL;
  97 }
  98
  99 static void
 100 nouveau_connector_destroy(struct drm_connector *connector)
 101 {
 102         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 103         struct nouveau_gpio *gpio;
 104         struct nouveau_drm *drm;
 105         struct drm_device *dev;
 106
 107         if (!nv_connector)
 108                 return;
 109
 110         dev  = nv_connector->base.dev;
 111         drm  = nouveau_drm(dev);
 112         gpio = nouveau_gpio(drm->device);
 113         NV_DEBUG(drm, "\n");
 114
 115         if (gpio && nv_connector->hpd != DCB_GPIO_UNUSED) {
 116                 gpio->isr_del(gpio, 0, nv_connector->hpd, 0xff,
 117                               nouveau_connector_hotplug, connector);
 118         }
 119
 120         kfree(nv_connector->edid);
 121         drm_sysfs_connector_remove(connector);
 122         drm_connector_cleanup(connector);
 123         kfree(connector);
 124 }
 125
 126 static struct nouveau_i2c_port *
 127 nouveau_connector_ddc_detect(struct drm_connector *connector,
 128                              struct nouveau_encoder **pnv_encoder)
 129 {
 130         struct drm_device *dev = connector->dev;
 131         struct nouveau_drm *drm = nouveau_drm(dev);
 132         struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
 133         int i;
 134
 135         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 136                 struct nouveau_i2c_port *port = NULL;
 137                 struct nouveau_encoder *nv_encoder;
 138                 struct drm_mode_object *obj;
 139                 int id;
 140
 141                 id = connector->encoder_ids[i];
 142                 if (!id)
 143                         break;
 144
 145                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 146                 if (!obj)
 147                         continue;
 148                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 149
 150                 if (nv_encoder->dcb->i2c_index < 0xf)
 151                         port = i2c->find(i2c, nv_encoder->dcb->i2c_index);
 152                 if (port && nv_probe_i2c(port, 0x50)) {
 153                         *pnv_encoder = nv_encoder;
 154                         return port;
 155                 }
 156         }
 157
 158         return NULL;
 159 }
 160
 161 static struct nouveau_encoder *
 162 nouveau_connector_of_detect(struct drm_connector *connector)
 163 {
 164 #ifdef __powerpc__
 165         struct drm_device *dev = connector->dev;
 166         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 167         struct nouveau_encoder *nv_encoder;
 168         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 169
 170         if (!dn ||
 171             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 172               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 173                 return NULL;
 174
 175         for_each_child_of_node(dn, cn) {
 176                 const char *name = of_get_property(cn, "name", NULL);
 177                 const void *edid = of_get_property(cn, "EDID", NULL);
 178                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 179
 180                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 181                         nv_connector->edid =
 182                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 183                         of_node_put(cn);
 184                         return nv_encoder;
 185                 }
 186         }
 187 #endif
 188         return NULL;
 189 }
 190
 191 static void
 192 nouveau_connector_set_encoder(struct drm_connector *connector,
 193                               struct nouveau_encoder *nv_encoder)
 194 {
 195         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 196         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 197         struct drm_device *dev = connector->dev;
 198
 199         if (nv_connector->detected_encoder == nv_encoder)
 200                 return;
 201         nv_connector->detected_encoder = nv_encoder;
 202
 203         if (nv_device(drm->device)->card_type >= NV_50) {
 204                 connector->interlace_allowed = true;
 205                 connector->doublescan_allowed = true;
 206         } else
 207         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 208             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 209                 connector->doublescan_allowed = false;
 210                 connector->interlace_allowed = false;
 211         } else {
 212                 connector->doublescan_allowed = true;
 213                 if (nv_device(drm->device)->card_type == NV_20 ||
 214                    (nv_device(drm->device)->card_type == NV_10 &&
 215                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 216                     (dev->pci_device & 0x0ff0) != 0x0150))
 217                         /* HW is broken */
 218                         connector->interlace_allowed = false;
 219                 else
 220                         connector->interlace_allowed = true;
 221         }
 222
 223         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 224                 drm_connector_property_set_value(connector,
 225                         dev->mode_config.dvi_i_subconnector_property,
 226                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 227                         DRM_MODE_SUBCONNECTOR_DVID :
 228                         DRM_MODE_SUBCONNECTOR_DVIA);
 229         }
 230 }
 231
 232 static enum drm_connector_status
 233 nouveau_connector_detect(struct drm_connector *connector, bool force)
 234 {
 235         struct drm_device *dev = connector->dev;
 236         struct nouveau_drm *drm = nouveau_drm(dev);
 237         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 238         struct nouveau_encoder *nv_encoder = NULL;
 239         struct nouveau_encoder *nv_partner;
 240         struct nouveau_i2c_port *i2c;
 241         int type;
 242
 243         /* Cleanup the previous EDID block. */
 244         if (nv_connector->edid) {
 245                 drm_mode_connector_update_edid_property(connector, NULL);
 246                 kfree(nv_connector->edid);
 247                 nv_connector->edid = NULL;
 248         }
 249
 250         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 251         if (i2c) {
 252                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 253                 drm_mode_connector_update_edid_property(connector,
 254                                                         nv_connector->edid);
 255                 if (!nv_connector->edid) {
 256                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 257                                  drm_get_connector_name(connector));
 258                         goto detect_analog;
 259                 }
 260
 261                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP &&
 262                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 263                         NV_ERROR(drm, "Detected %s, but failed init\n",
 264                                  drm_get_connector_name(connector));
 265                         return connector_status_disconnected;
 266                 }
 267
 268                 /* Override encoder type for DVI-I based on whether EDID
 269                  * says the display is digital or analog, both use the
 270                  * same i2c channel so the value returned from ddc_detect
 271                  * isn't necessarily correct.
 272                  */
 273                 nv_partner = NULL;
 274                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 275                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 276                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 277                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 278
 279                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 280                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 281                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 282                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 283                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 284                                 type = DCB_OUTPUT_TMDS;
 285                         else
 286                                 type = DCB_OUTPUT_ANALOG;
 287
 288                         nv_encoder = find_encoder(connector, type);
 289                 }
 290
 291                 nouveau_connector_set_encoder(connector, nv_encoder);
 292                 return connector_status_connected;
 293         }
 294
 295         nv_encoder = nouveau_connector_of_detect(connector);
 296         if (nv_encoder) {
 297                 nouveau_connector_set_encoder(connector, nv_encoder);
 298                 return connector_status_connected;
 299         }
 300
 301 detect_analog:
 302         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 303         if (!nv_encoder && !nouveau_tv_disable)
 304                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 305         if (nv_encoder && force) {
 306                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 307                 struct drm_encoder_helper_funcs *helper =
 308                                                 encoder->helper_private;
 309
 310                 if (helper->detect(encoder, connector) ==
 311                                                 connector_status_connected) {
 312                         nouveau_connector_set_encoder(connector, nv_encoder);
 313                         return connector_status_connected;
 314                 }
 315
 316         }
 317
 318         return connector_status_disconnected;
 319 }
 320
 321 static enum drm_connector_status
 322 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 323 {
 324         struct drm_device *dev = connector->dev;
 325         struct nouveau_drm *drm = nouveau_drm(dev);
 326         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 327         struct nouveau_encoder *nv_encoder = NULL;
 328         enum drm_connector_status status = connector_status_disconnected;
 329
 330         /* Cleanup the previous EDID block. */
 331         if (nv_connector->edid) {
 332                 drm_mode_connector_update_edid_property(connector, NULL);
 333                 kfree(nv_connector->edid);
 334                 nv_connector->edid = NULL;
 335         }
 336
 337         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 338         if (!nv_encoder)
 339                 return connector_status_disconnected;
 340
 341         /* Try retrieving EDID via DDC */
 342         if (!drm->vbios.fp_no_ddc) {
 343                 status = nouveau_connector_detect(connector, force);
 344                 if (status == connector_status_connected)
 345                         goto out;
 346         }
 347
 348         /* On some laptops (Sony, i'm looking at you) there appears to
 349          * be no direct way of accessing the panel's EDID.  The only
 350          * option available to us appears to be to ask ACPI for help..
 351          *
 352          * It's important this check's before trying straps, one of the
 353          * said manufacturer's laptops are configured in such a way
 354          * the nouveau decides an entry in the VBIOS FP mode table is
 355          * valid - it's not (rh#613284)
 356          */
 357         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 358                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 359                         status = connector_status_connected;
 360                         goto out;
 361                 }
 362         }
 363
 364         /* If no EDID found above, and the VBIOS indicates a hardcoded
 365          * modeline is avalilable for the panel, set it as the panel's
 366          * native mode and exit.
 367          */
 368         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 369             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 370                 status = connector_status_connected;
 371                 goto out;
 372         }
 373
 374         /* Still nothing, some VBIOS images have a hardcoded EDID block
 375          * stored for the panel stored in them.
 376          */
 377         if (!drm->vbios.fp_no_ddc) {
 378                 struct edid *edid =
 379                         (struct edid *)nouveau_bios_embedded_edid(dev);
 380                 if (edid) {
 381                         nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
 382                         *(nv_connector->edid) = *edid;
 383                         status = connector_status_connected;
 384                 }
 385         }
 386
 387 out:
 388 #if defined(CONFIG_ACPI_BUTTON) || \
 389         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 390         if (status == connector_status_connected &&
 391             !nouveau_ignorelid && !acpi_lid_open())
 392                 status = connector_status_unknown;
 393 #endif
 394
 395         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 396         nouveau_connector_set_encoder(connector, nv_encoder);
 397         return status;
 398 }
 399
 400 static void
 401 nouveau_connector_force(struct drm_connector *connector)
 402 {
 403         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 404         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 405         struct nouveau_encoder *nv_encoder;
 406         int type;
 407
 408         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 409                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 410                         type = DCB_OUTPUT_TMDS;
 411                 else
 412                         type = DCB_OUTPUT_ANALOG;
 413         } else
 414                 type = DCB_OUTPUT_ANY;
 415
 416         nv_encoder = find_encoder(connector, type);
 417         if (!nv_encoder) {
 418                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 419                          drm_get_connector_name(connector));
 420                 connector->status = connector_status_disconnected;
 421                 return;
 422         }
 423
 424         nouveau_connector_set_encoder(connector, nv_encoder);
 425 }
 426
 427 static int
 428 nouveau_connector_set_property(struct drm_connector *connector,
 429                                struct drm_property *property, uint64_t value)
 430 {
 431         struct nouveau_display *disp = nouveau_display(connector->dev);
 432         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 433         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 434         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 435         struct drm_device *dev = connector->dev;
 436         struct nouveau_crtc *nv_crtc;
 437         int ret;
 438
 439         nv_crtc = NULL;
 440         if (connector->encoder && connector->encoder->crtc)
 441                 nv_crtc = nouveau_crtc(connector->encoder->crtc);
 442
 443         /* Scaling mode */
 444         if (property == dev->mode_config.scaling_mode_property) {
 445                 bool modeset = false;
 446
 447                 switch (value) {
 448                 case DRM_MODE_SCALE_NONE:
 449                 case DRM_MODE_SCALE_FULLSCREEN:
 450                 case DRM_MODE_SCALE_CENTER:
 451                 case DRM_MODE_SCALE_ASPECT:
 452                         break;
 453                 default:
 454                         return -EINVAL;
 455                 }
 456
 457                 /* LVDS always needs gpu scaling */
 458                 if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS &&
 459                     value == DRM_MODE_SCALE_NONE)
 460                         return -EINVAL;
 461
 462                 /* Changing between GPU and panel scaling requires a full
 463                  * modeset
 464                  */
 465                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 466                     (value == DRM_MODE_SCALE_NONE))
 467                         modeset = true;
 468                 nv_connector->scaling_mode = value;
 469
 470                 if (!nv_crtc)
 471                         return 0;
 472
 473                 if (modeset || !nv_crtc->set_scale) {
 474                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 475                                                         &nv_crtc->base.mode,
 476                                                         nv_crtc->base.x,
 477                                                         nv_crtc->base.y, NULL);
 478                         if (!ret)
 479                                 return -EINVAL;
 480                 } else {
 481                         ret = nv_crtc->set_scale(nv_crtc, true);
 482                         if (ret)
 483                                 return ret;
 484                 }
 485
 486                 return 0;
 487         }
 488
 489         /* Underscan */
 490         if (property == disp->underscan_property) {
 491                 if (nv_connector->underscan != value) {
 492                         nv_connector->underscan = value;
 493                         if (!nv_crtc || !nv_crtc->set_scale)
 494                                 return 0;
 495
 496                         return nv_crtc->set_scale(nv_crtc, true);
 497                 }
 498
 499                 return 0;
 500         }
 501
 502         if (property == disp->underscan_hborder_property) {
 503                 if (nv_connector->underscan_hborder != value) {
 504                         nv_connector->underscan_hborder = value;
 505                         if (!nv_crtc || !nv_crtc->set_scale)
 506                                 return 0;
 507
 508                         return nv_crtc->set_scale(nv_crtc, true);
 509                 }
 510
 511                 return 0;
 512         }
 513
 514         if (property == disp->underscan_vborder_property) {
 515                 if (nv_connector->underscan_vborder != value) {
 516                         nv_connector->underscan_vborder = value;
 517                         if (!nv_crtc || !nv_crtc->set_scale)
 518                                 return 0;
 519
 520                         return nv_crtc->set_scale(nv_crtc, true);
 521                 }
 522
 523                 return 0;
 524         }
 525
 526         /* Dithering */
 527         if (property == disp->dithering_mode) {
 528                 nv_connector->dithering_mode = value;
 529                 if (!nv_crtc || !nv_crtc->set_dither)
 530                         return 0;
 531
 532                 return nv_crtc->set_dither(nv_crtc, true);
 533         }
 534
 535         if (property == disp->dithering_depth) {
 536                 nv_connector->dithering_depth = value;
 537                 if (!nv_crtc || !nv_crtc->set_dither)
 538                         return 0;
 539
 540                 return nv_crtc->set_dither(nv_crtc, true);
 541         }
 542
 543         if (nv_crtc && nv_crtc->set_color_vibrance) {
 544                 /* Hue */
 545                 if (property == disp->vibrant_hue_property) {
 546                         nv_crtc->vibrant_hue = value - 90;
 547                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 548                 }
 549                 /* Saturation */
 550                 if (property == disp->color_vibrance_property) {
 551                         nv_crtc->color_vibrance = value - 100;
 552                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 553                 }
 554         }
 555
 556         if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 557                 return get_slave_funcs(encoder)->set_property(
 558                         encoder, connector, property, value);
 559
 560         return -EINVAL;
 561 }
 562
 563 static struct drm_display_mode *
 564 nouveau_connector_native_mode(struct drm_connector *connector)
 565 {
 566         struct drm_connector_helper_funcs *helper = connector->helper_private;
 567         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 568         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 569         struct drm_device *dev = connector->dev;
 570         struct drm_display_mode *mode, *largest = NULL;
 571         int high_w = 0, high_h = 0, high_v = 0;
 572
 573         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 574                 mode->vrefresh = drm_mode_vrefresh(mode);
 575                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 576                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 577                         continue;
 578
 579                 /* Use preferred mode if there is one.. */
 580                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 581                         NV_DEBUG(drm, "native mode from preferred\n");
 582                         return drm_mode_duplicate(dev, mode);
 583                 }
 584
 585                 /* Otherwise, take the resolution with the largest width, then
 586                  * height, then vertical refresh
 587                  */
 588                 if (mode->hdisplay < high_w)
 589                         continue;
 590
 591                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 592                         continue;
 593
 594                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 595                     mode->vrefresh < high_v)
 596                         continue;
 597
 598                 high_w = mode->hdisplay;
 599                 high_h = mode->vdisplay;
 600                 high_v = mode->vrefresh;
 601                 largest = mode;
 602         }
 603
 604         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
 605                       high_w, high_h, high_v);
 606         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 607 }
 608
 609 struct moderec {
 610         int hdisplay;
 611         int vdisplay;
 612 };
 613
 614 static struct moderec scaler_modes[] = {
 615         { 1920, 1200 },
 616         { 1920, 1080 },
 617         { 1680, 1050 },
 618         { 1600, 1200 },
 619         { 1400, 1050 },
 620         { 1280, 1024 },
 621         { 1280, 960 },
 622         { 1152, 864 },
 623         { 1024, 768 },
 624         { 800, 600 },
 625         { 720, 400 },
 626         { 640, 480 },
 627         { 640, 400 },
 628         { 640, 350 },
 629         {}
 630 };
 631
 632 static int
 633 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 634 {
 635         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 636         struct drm_display_mode *native = nv_connector->native_mode, *m;
 637         struct drm_device *dev = connector->dev;
 638         struct moderec *mode = &scaler_modes[0];
 639         int modes = 0;
 640
 641         if (!native)
 642                 return 0;
 643
 644         while (mode->hdisplay) {
 645                 if (mode->hdisplay <= native->hdisplay &&
 646                     mode->vdisplay <= native->vdisplay) {
 647                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 648                                          drm_mode_vrefresh(native), false,
 649                                          false, false);
 650                         if (!m)
 651                                 continue;
 652
 653                         m->type |= DRM_MODE_TYPE_DRIVER;
 654
 655                         drm_mode_probed_add(connector, m);
 656                         modes++;
 657                 }
 658
 659                 mode++;
 660         }
 661
 662         return modes;
 663 }
 664
 665 static void
 666 nouveau_connector_detect_depth(struct drm_connector *connector)
 667 {
 668         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 669         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 670         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 671         struct nvbios *bios = &drm->vbios;
 672         struct drm_display_mode *mode = nv_connector->native_mode;
 673         bool duallink;
 674
 675         /* if the edid is feeling nice enough to provide this info, use it */
 676         if (nv_connector->edid && connector->display_info.bpc)
 677                 return;
 678
 679         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 680         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 681                 connector->display_info.bpc = 6;
 682                 return;
 683         }
 684
 685         /* we're out of options unless we're LVDS, default to 8bpc */
 686         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 687                 connector->display_info.bpc = 8;
 688                 return;
 689         }
 690
 691         connector->display_info.bpc = 6;
 692
 693         /* LVDS: panel straps */
 694         if (bios->fp_no_ddc) {
 695                 if (bios->fp.if_is_24bit)
 696                         connector->display_info.bpc = 8;
 697                 return;
 698         }
 699
 700         /* LVDS: DDC panel, need to first determine the number of links to
 701          * know which if_is_24bit flag to check...
 702          */
 703         if (nv_connector->edid &&
 704             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 705                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 706         else
 707                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 708
 709         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 710             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 711                 connector->display_info.bpc = 8;
 712 }
 713
 714 static int
 715 nouveau_connector_get_modes(struct drm_connector *connector)
 716 {
 717         struct drm_device *dev = connector->dev;
 718         struct nouveau_drm *drm = nouveau_drm(dev);
 719         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 720         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 721         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 722         int ret = 0;
 723
 724         /* destroy the native mode, the attached monitor could have changed.
 725          */
 726         if (nv_connector->native_mode) {
 727                 drm_mode_destroy(dev, nv_connector->native_mode);
 728                 nv_connector->native_mode = NULL;
 729         }
 730
 731         if (nv_connector->edid)
 732                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 733         else
 734         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 735             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 736              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 737                 struct drm_display_mode mode;
 738
 739                 nouveau_bios_fp_mode(dev, &mode);
 740                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 741         }
 742
 743         /* Determine display colour depth for everything except LVDS now,
 744          * DP requires this before mode_valid() is called.
 745          */
 746         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 747                 nouveau_connector_detect_depth(connector);
 748
 749         /* Find the native mode if this is a digital panel, if we didn't
 750          * find any modes through DDC previously add the native mode to
 751          * the list of modes.
 752          */
 753         if (!nv_connector->native_mode)
 754                 nv_connector->native_mode =
 755                         nouveau_connector_native_mode(connector);
 756         if (ret == 0 && nv_connector->native_mode) {
 757                 struct drm_display_mode *mode;
 758
 759                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 760                 drm_mode_probed_add(connector, mode);
 761                 ret = 1;
 762         }
 763
 764         /* Determine LVDS colour depth, must happen after determining
 765          * "native" mode as some VBIOS tables require us to use the
 766          * pixel clock as part of the lookup...
 767          */
 768         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 769                 nouveau_connector_detect_depth(connector);
 770
 771         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 772                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 773
 774         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 775             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 776             nv_connector->type == DCB_CONNECTOR_eDP)
 777                 ret += nouveau_connector_scaler_modes_add(connector);
 778
 779         return ret;
 780 }
 781
 782 static unsigned
 783 get_tmds_link_bandwidth(struct drm_connector *connector)
 784 {
 785         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 786         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 787         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 788
 789         if (dcb->location != DCB_LOC_ON_CHIP ||
 790             nv_device(drm->device)->chipset >= 0x46)
 791                 return 165000;
 792         else if (nv_device(drm->device)->chipset >= 0x40)
 793                 return 155000;
 794         else if (nv_device(drm->device)->chipset >= 0x18)
 795                 return 135000;
 796         else
 797                 return 112000;
 798 }
 799
 800 static int
 801 nouveau_connector_mode_valid(struct drm_connector *connector,
 802                              struct drm_display_mode *mode)
 803 {
 804         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 805         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 806         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 807         unsigned min_clock = 25000, max_clock = min_clock;
 808         unsigned clock = mode->clock;
 809
 810         switch (nv_encoder->dcb->type) {
 811         case DCB_OUTPUT_LVDS:
 812                 if (nv_connector->native_mode &&
 813                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 814                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 815                         return MODE_PANEL;
 816
 817                 min_clock = 0;
 818                 max_clock = 400000;
 819                 break;
 820         case DCB_OUTPUT_TMDS:
 821                 max_clock = get_tmds_link_bandwidth(connector);
 822                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 823                         max_clock *= 2;
 824                 break;
 825         case DCB_OUTPUT_ANALOG:
 826                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 827                 if (!max_clock)
 828                         max_clock = 350000;
 829                 break;
 830         case DCB_OUTPUT_TV:
 831                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 832         case DCB_OUTPUT_DP:
 833                 max_clock  = nv_encoder->dp.link_nr;
 834                 max_clock *= nv_encoder->dp.link_bw;
 835                 clock = clock * (connector->display_info.bpc * 3) / 10;
 836                 break;
 837         default:
 838                 BUG_ON(1);
 839                 return MODE_BAD;
 840         }
 841
 842         if (clock < min_clock)
 843                 return MODE_CLOCK_LOW;
 844
 845         if (clock > max_clock)
 846                 return MODE_CLOCK_HIGH;
 847
 848         return MODE_OK;
 849 }
 850
 851 static struct drm_encoder *
 852 nouveau_connector_best_encoder(struct drm_connector *connector)
 853 {
 854         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 855
 856         if (nv_connector->detected_encoder)
 857                 return to_drm_encoder(nv_connector->detected_encoder);
 858
 859         return NULL;
 860 }
 861
 862 static const struct drm_connector_helper_funcs
 863 nouveau_connector_helper_funcs = {
 864         .get_modes = nouveau_connector_get_modes,
 865         .mode_valid = nouveau_connector_mode_valid,
 866         .best_encoder = nouveau_connector_best_encoder,
 867 };
 868
 869 static const struct drm_connector_funcs
 870 nouveau_connector_funcs = {
 871         .dpms = drm_helper_connector_dpms,
 872         .save = NULL,
 873         .restore = NULL,
 874         .detect = nouveau_connector_detect,
 875         .destroy = nouveau_connector_destroy,
 876         .fill_modes = drm_helper_probe_single_connector_modes,
 877         .set_property = nouveau_connector_set_property,
 878         .force = nouveau_connector_force
 879 };
 880
 881 static const struct drm_connector_funcs
 882 nouveau_connector_funcs_lvds = {
 883         .dpms = drm_helper_connector_dpms,
 884         .save = NULL,
 885         .restore = NULL,
 886         .detect = nouveau_connector_detect_lvds,
 887         .destroy = nouveau_connector_destroy,
 888         .fill_modes = drm_helper_probe_single_connector_modes,
 889         .set_property = nouveau_connector_set_property,
 890         .force = nouveau_connector_force
 891 };
 892
 893 static int
 894 drm_conntype_from_dcb(enum dcb_connector_type dcb)
 895 {
 896         switch (dcb) {
 897         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
 898         case DCB_CONNECTOR_TV_0     :
 899         case DCB_CONNECTOR_TV_1     :
 900         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
 901         case DCB_CONNECTOR_DMS59_0  :
 902         case DCB_CONNECTOR_DMS59_1  :
 903         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
 904         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
 905         case DCB_CONNECTOR_LVDS     :
 906         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
 907         case DCB_CONNECTOR_DMS59_DP0:
 908         case DCB_CONNECTOR_DMS59_DP1:
 909         case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
 910         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
 911         case DCB_CONNECTOR_HDMI_0   :
 912         case DCB_CONNECTOR_HDMI_1   : return DRM_MODE_CONNECTOR_HDMIA;
 913         default:
 914                 break;
 915         }
 916
 917         return DRM_MODE_CONNECTOR_Unknown;
 918 }
 919
 920 struct drm_connector *
 921 nouveau_connector_create(struct drm_device *dev, int index)
 922 {
 923         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 924         struct nouveau_drm *drm = nouveau_drm(dev);
 925         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 926         struct nouveau_display *disp = nouveau_display(dev);
 927         struct nouveau_connector *nv_connector = NULL;
 928         struct drm_connector *connector;
 929         int type, ret = 0;
 930         bool dummy;
 931
 932         NV_DEBUG(drm, "\n");
 933
 934         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 935                 nv_connector = nouveau_connector(connector);
 936                 if (nv_connector->index == index)
 937                         return connector;
 938         }
 939
 940         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 941         if (!nv_connector)
 942                 return ERR_PTR(-ENOMEM);
 943
 944         connector = &nv_connector->base;
 945         nv_connector->index = index;
 946
 947         /* attempt to parse vbios connector type and hotplug gpio */
 948         nv_connector->dcb = olddcb_conn(dev, index);
 949         if (nv_connector->dcb) {
 950                 static const u8 hpd[16] = {
 951                         0xff, 0x07, 0x08, 0xff, 0xff, 0x51, 0x52, 0xff,
 952                         0xff, 0xff, 0xff, 0xff, 0xff, 0x5e, 0x5f, 0x60,
 953                 };
 954
 955                 u32 entry = ROM16(nv_connector->dcb[0]);
 956                 if (olddcb_conntab(dev)[3] >= 4)
 957                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
 958
 959                 nv_connector->hpd = ffs((entry & 0x07033000) >> 12);
 960                 nv_connector->hpd = hpd[nv_connector->hpd];
 961
 962                 nv_connector->type = nv_connector->dcb[0];
 963                 if (drm_conntype_from_dcb(nv_connector->type) ==
 964                                           DRM_MODE_CONNECTOR_Unknown) {
 965                         NV_WARN(drm, "unknown connector type %02x\n",
 966                                 nv_connector->type);
 967                         nv_connector->type = DCB_CONNECTOR_NONE;
 968                 }
 969
 970                 /* Gigabyte NX85T */
 971                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
 972                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
 973                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 974                 }
 975
 976                 /* Gigabyte GV-NX86T512H */
 977                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
 978                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
 979                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
 980                 }
 981         } else {
 982                 nv_connector->type = DCB_CONNECTOR_NONE;
 983                 nv_connector->hpd = DCB_GPIO_UNUSED;
 984         }
 985
 986         /* no vbios data, or an unknown dcb connector type - attempt to
 987          * figure out something suitable ourselves
 988          */
 989         if (nv_connector->type == DCB_CONNECTOR_NONE) {
 990                 struct nouveau_drm *drm = nouveau_drm(dev);
 991                 struct dcb_table *dcbt = &drm->vbios.dcb;
 992                 u32 encoders = 0;
 993                 int i;
 994
 995                 for (i = 0; i < dcbt->entries; i++) {
 996                         if (dcbt->entry[i].connector == nv_connector->index)
 997                                 encoders |= (1 << dcbt->entry[i].type);
 998                 }
 999
1000                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1001                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1002                                 nv_connector->type = DCB_CONNECTOR_DP;
1003                         else
1004                                 nv_connector->type = DCB_CONNECTOR_eDP;
1005                 } else
1006                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1007                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1008                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1009                         else
1010                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1011                 } else
1012                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1013                         nv_connector->type = DCB_CONNECTOR_VGA;
1014                 } else
1015                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1016                         nv_connector->type = DCB_CONNECTOR_LVDS;
1017                 } else
1018                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1019                         nv_connector->type = DCB_CONNECTOR_TV_0;
1020                 }
1021         }
1022
1023         type = drm_conntype_from_dcb(nv_connector->type);
1024         if (type == DRM_MODE_CONNECTOR_LVDS) {
1025                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1026                 if (ret) {
1027                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1028                         kfree(nv_connector);
1029                         return ERR_PTR(ret);
1030                 }
1031
1032                 funcs = &nouveau_connector_funcs_lvds;
1033         } else {
1034                 funcs = &nouveau_connector_funcs;
1035         }
1036
1037         /* defaults, will get overridden in detect() */
1038         connector->interlace_allowed = false;
1039         connector->doublescan_allowed = false;
1040
1041         drm_connector_init(dev, connector, funcs, type);
1042         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1043
1044         /* Init DVI-I specific properties */
1045         if (nv_connector->type == DCB_CONNECTOR_DVI_I)
1046                 drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
1047
1048         /* Add overscan compensation options to digital outputs */
1049         if (disp->underscan_property &&
1050             (type == DRM_MODE_CONNECTOR_DVID ||
1051              type == DRM_MODE_CONNECTOR_DVII ||
1052              type == DRM_MODE_CONNECTOR_HDMIA ||
1053              type == DRM_MODE_CONNECTOR_DisplayPort)) {
1054                 drm_connector_attach_property(connector,
1055                                               disp->underscan_property,
1056                                               UNDERSCAN_OFF);
1057                 drm_connector_attach_property(connector,
1058                                               disp->underscan_hborder_property,
1059                                               0);
1060                 drm_connector_attach_property(connector,
1061                                               disp->underscan_vborder_property,
1062                                               0);
1063         }
1064
1065         /* Add hue and saturation options */
1066         if (disp->vibrant_hue_property)
1067                 drm_connector_attach_property(connector,
1068                                               disp->vibrant_hue_property,
1069                                               90);
1070         if (disp->color_vibrance_property)
1071                 drm_connector_attach_property(connector,
1072                                               disp->color_vibrance_property,
1073                                               150);
1074
1075         switch (nv_connector->type) {
1076         case DCB_CONNECTOR_VGA:
1077                 if (nv_device(drm->device)->card_type >= NV_50) {
1078                         drm_connector_attach_property(connector,
1079                                         dev->mode_config.scaling_mode_property,
1080                                         nv_connector->scaling_mode);
1081                 }
1082                 /* fall-through */
1083         case DCB_CONNECTOR_TV_0:
1084         case DCB_CONNECTOR_TV_1:
1085         case DCB_CONNECTOR_TV_3:
1086                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1087                 break;
1088         default:
1089                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1090
1091                 drm_connector_attach_property(connector,
1092                                 dev->mode_config.scaling_mode_property,
1093                                 nv_connector->scaling_mode);
1094                 if (disp->dithering_mode) {
1095                         nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1096                         drm_connector_attach_property(connector,
1097                                                 disp->dithering_mode,
1098                                                 nv_connector->dithering_mode);
1099                 }
1100                 if (disp->dithering_depth) {
1101                         nv_connector->dithering_depth = DITHERING_DEPTH_AUTO;
1102                         drm_connector_attach_property(connector,
1103                                                 disp->dithering_depth,
1104                                                 nv_connector->dithering_depth);
1105                 }
1106                 break;
1107         }
1108
1109         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1110         if (gpio && nv_connector->hpd != DCB_GPIO_UNUSED) {
1111                 ret = gpio->isr_add(gpio, 0, nv_connector->hpd, 0xff,
1112                                     nouveau_connector_hotplug, connector);
1113                 if (ret == 0)
1114                         connector->polled = DRM_CONNECTOR_POLL_HPD;
1115         }
1116
1117         drm_sysfs_connector_add(connector);
1118         return connector;
1119 }
1120
1121 static void
1122 nouveau_connector_hotplug(void *data, int plugged)
1123 {
1124         struct drm_connector *connector = data;
1125         struct drm_device *dev = connector->dev;
1126         struct nouveau_drm *drm = nouveau_drm(dev);
1127
1128         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un",
1129                  drm_get_connector_name(connector));
1130
1131         if (plugged)
1132                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1133         else
1134                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1135
1136         drm_helper_hpd_irq_event(dev);
1137 }