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 "dispnv04/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 struct nouveau_encoder *
  59 find_encoder(struct drm_connector *connector, int type)
  60 {
  61         struct drm_device *dev = connector->dev;
  62         struct nouveau_encoder *nv_encoder;
  63         struct drm_mode_object *obj;
  64         int i, id;
  65
  66         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
  67                 id = connector->encoder_ids[i];
  68                 if (!id)
  69                         break;
  70
  71                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  72                 if (!obj)
  73                         continue;
  74                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
  75
  76                 if (type == DCB_OUTPUT_ANY || nv_encoder->dcb->type == type)
  77                         return nv_encoder;
  78         }
  79
  80         return NULL;
  81 }
  82
  83 struct nouveau_connector *
  84 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
  85 {
  86         struct drm_device *dev = to_drm_encoder(encoder)->dev;
  87         struct drm_connector *drm_connector;
  88
  89         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
  90                 if (drm_connector->encoder == to_drm_encoder(encoder))
  91                         return nouveau_connector(drm_connector);
  92         }
  93
  94         return NULL;
  95 }
  96
  97 static void
  98 nouveau_connector_destroy(struct drm_connector *connector)
  99 {
 100         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 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_port *
 108 nouveau_connector_ddc_detect(struct drm_connector *connector,
 109                              struct nouveau_encoder **pnv_encoder)
 110 {
 111         struct drm_device *dev = connector->dev;
 112         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 113         struct nouveau_drm *drm = nouveau_drm(dev);
 114         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 115         struct nouveau_i2c_port *port = NULL;
 116         int i, panel = -ENODEV;
 117
 118         /* eDP panels need powering on by us (if the VBIOS doesn't default it
 119          * to on) before doing any AUX channel transactions.  LVDS panel power
 120          * is handled by the SOR itself, and not required for LVDS DDC.
 121          */
 122         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 123                 panel = gpio->get(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff);
 124                 if (panel == 0) {
 125                         gpio->set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, 1);
 126                         msleep(300);
 127                 }
 128         }
 129
 130         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 131                 struct nouveau_encoder *nv_encoder;
 132                 struct drm_mode_object *obj;
 133                 int id;
 134
 135                 id = connector->encoder_ids[i];
 136                 if (!id)
 137                         break;
 138
 139                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 140                 if (!obj)
 141                         continue;
 142                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 143
 144                 port = nv_encoder->i2c;
 145                 if (port && nv_probe_i2c(port, 0x50)) {
 146                         *pnv_encoder = nv_encoder;
 147                         break;
 148                 }
 149
 150                 port = NULL;
 151         }
 152
 153         /* eDP panel not detected, restore panel power GPIO to previous
 154          * state to avoid confusing the SOR for other output types.
 155          */
 156         if (!port && panel == 0)
 157                 gpio->set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, panel);
 158
 159         return port;
 160 }
 161
 162 static struct nouveau_encoder *
 163 nouveau_connector_of_detect(struct drm_connector *connector)
 164 {
 165 #ifdef __powerpc__
 166         struct drm_device *dev = connector->dev;
 167         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 168         struct nouveau_encoder *nv_encoder;
 169         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 170
 171         if (!dn ||
 172             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 173               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 174                 return NULL;
 175
 176         for_each_child_of_node(dn, cn) {
 177                 const char *name = of_get_property(cn, "name", NULL);
 178                 const void *edid = of_get_property(cn, "EDID", NULL);
 179                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 180
 181                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 182                         nv_connector->edid =
 183                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 184                         of_node_put(cn);
 185                         return nv_encoder;
 186                 }
 187         }
 188 #endif
 189         return NULL;
 190 }
 191
 192 static void
 193 nouveau_connector_set_encoder(struct drm_connector *connector,
 194                               struct nouveau_encoder *nv_encoder)
 195 {
 196         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 197         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 198         struct drm_device *dev = connector->dev;
 199
 200         if (nv_connector->detected_encoder == nv_encoder)
 201                 return;
 202         nv_connector->detected_encoder = nv_encoder;
 203
 204         if (nv_device(drm->device)->card_type >= NV_50) {
 205                 connector->interlace_allowed = true;
 206                 connector->doublescan_allowed = true;
 207         } else
 208         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 209             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 210                 connector->doublescan_allowed = false;
 211                 connector->interlace_allowed = false;
 212         } else {
 213                 connector->doublescan_allowed = true;
 214                 if (nv_device(drm->device)->card_type == NV_20 ||
 215                    (nv_device(drm->device)->card_type == NV_10 &&
 216                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 217                     (dev->pci_device & 0x0ff0) != 0x0150))
 218                         /* HW is broken */
 219                         connector->interlace_allowed = false;
 220                 else
 221                         connector->interlace_allowed = true;
 222         }
 223
 224         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 225                 drm_object_property_set_value(&connector->base,
 226                         dev->mode_config.dvi_i_subconnector_property,
 227                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 228                         DRM_MODE_SUBCONNECTOR_DVID :
 229                         DRM_MODE_SUBCONNECTOR_DVIA);
 230         }
 231 }
 232
 233 static enum drm_connector_status
 234 nouveau_connector_detect(struct drm_connector *connector, bool force)
 235 {
 236         struct drm_device *dev = connector->dev;
 237         struct nouveau_drm *drm = nouveau_drm(dev);
 238         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 239         struct nouveau_encoder *nv_encoder = NULL;
 240         struct nouveau_encoder *nv_partner;
 241         struct nouveau_i2c_port *i2c;
 242         int type;
 243
 244         /* Cleanup the previous EDID block. */
 245         if (nv_connector->edid) {
 246                 drm_mode_connector_update_edid_property(connector, NULL);
 247                 kfree(nv_connector->edid);
 248                 nv_connector->edid = NULL;
 249         }
 250
 251         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 252         if (i2c) {
 253                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 254                 drm_mode_connector_update_edid_property(connector,
 255                                                         nv_connector->edid);
 256                 if (!nv_connector->edid) {
 257                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 258                                  drm_get_connector_name(connector));
 259                         goto detect_analog;
 260                 }
 261
 262                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP &&
 263                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 264                         NV_ERROR(drm, "Detected %s, but failed init\n",
 265                                  drm_get_connector_name(connector));
 266                         return connector_status_disconnected;
 267                 }
 268
 269                 /* Override encoder type for DVI-I based on whether EDID
 270                  * says the display is digital or analog, both use the
 271                  * same i2c channel so the value returned from ddc_detect
 272                  * isn't necessarily correct.
 273                  */
 274                 nv_partner = NULL;
 275                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 276                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 277                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 278                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 279
 280                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 281                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 282                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 283                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 284                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 285                                 type = DCB_OUTPUT_TMDS;
 286                         else
 287                                 type = DCB_OUTPUT_ANALOG;
 288
 289                         nv_encoder = find_encoder(connector, type);
 290                 }
 291
 292                 nouveau_connector_set_encoder(connector, nv_encoder);
 293                 return connector_status_connected;
 294         }
 295
 296         nv_encoder = nouveau_connector_of_detect(connector);
 297         if (nv_encoder) {
 298                 nouveau_connector_set_encoder(connector, nv_encoder);
 299                 return connector_status_connected;
 300         }
 301
 302 detect_analog:
 303         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 304         if (!nv_encoder && !nouveau_tv_disable)
 305                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 306         if (nv_encoder && force) {
 307                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 308                 struct drm_encoder_helper_funcs *helper =
 309                                                 encoder->helper_private;
 310
 311                 if (helper->detect(encoder, connector) ==
 312                                                 connector_status_connected) {
 313                         nouveau_connector_set_encoder(connector, nv_encoder);
 314                         return connector_status_connected;
 315                 }
 316
 317         }
 318
 319         return connector_status_disconnected;
 320 }
 321
 322 static enum drm_connector_status
 323 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 324 {
 325         struct drm_device *dev = connector->dev;
 326         struct nouveau_drm *drm = nouveau_drm(dev);
 327         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 328         struct nouveau_encoder *nv_encoder = NULL;
 329         enum drm_connector_status status = connector_status_disconnected;
 330
 331         /* Cleanup the previous EDID block. */
 332         if (nv_connector->edid) {
 333                 drm_mode_connector_update_edid_property(connector, NULL);
 334                 kfree(nv_connector->edid);
 335                 nv_connector->edid = NULL;
 336         }
 337
 338         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 339         if (!nv_encoder)
 340                 return connector_status_disconnected;
 341
 342         /* Try retrieving EDID via DDC */
 343         if (!drm->vbios.fp_no_ddc) {
 344                 status = nouveau_connector_detect(connector, force);
 345                 if (status == connector_status_connected)
 346                         goto out;
 347         }
 348
 349         /* On some laptops (Sony, i'm looking at you) there appears to
 350          * be no direct way of accessing the panel's EDID.  The only
 351          * option available to us appears to be to ask ACPI for help..
 352          *
 353          * It's important this check's before trying straps, one of the
 354          * said manufacturer's laptops are configured in such a way
 355          * the nouveau decides an entry in the VBIOS FP mode table is
 356          * valid - it's not (rh#613284)
 357          */
 358         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 359                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 360                         status = connector_status_connected;
 361                         goto out;
 362                 }
 363         }
 364
 365         /* If no EDID found above, and the VBIOS indicates a hardcoded
 366          * modeline is avalilable for the panel, set it as the panel's
 367          * native mode and exit.
 368          */
 369         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 370             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 371                 status = connector_status_connected;
 372                 goto out;
 373         }
 374
 375         /* Still nothing, some VBIOS images have a hardcoded EDID block
 376          * stored for the panel stored in them.
 377          */
 378         if (!drm->vbios.fp_no_ddc) {
 379                 struct edid *edid =
 380                         (struct edid *)nouveau_bios_embedded_edid(dev);
 381                 if (edid) {
 382                         nv_connector->edid =
 383                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 384                         if (nv_connector->edid)
 385                                 status = connector_status_connected;
 386                 }
 387         }
 388
 389 out:
 390 #if defined(CONFIG_ACPI_BUTTON) || \
 391         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 392         if (status == connector_status_connected &&
 393             !nouveau_ignorelid && !acpi_lid_open())
 394                 status = connector_status_unknown;
 395 #endif
 396
 397         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 398         nouveau_connector_set_encoder(connector, nv_encoder);
 399         return status;
 400 }
 401
 402 static void
 403 nouveau_connector_force(struct drm_connector *connector)
 404 {
 405         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 406         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 407         struct nouveau_encoder *nv_encoder;
 408         int type;
 409
 410         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 411                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 412                         type = DCB_OUTPUT_TMDS;
 413                 else
 414                         type = DCB_OUTPUT_ANALOG;
 415         } else
 416                 type = DCB_OUTPUT_ANY;
 417
 418         nv_encoder = find_encoder(connector, type);
 419         if (!nv_encoder) {
 420                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 421                          drm_get_connector_name(connector));
 422                 connector->status = connector_status_disconnected;
 423                 return;
 424         }
 425
 426         nouveau_connector_set_encoder(connector, nv_encoder);
 427 }
 428
 429 static int
 430 nouveau_connector_set_property(struct drm_connector *connector,
 431                                struct drm_property *property, uint64_t value)
 432 {
 433         struct nouveau_display *disp = nouveau_display(connector->dev);
 434         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 435         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 436         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 437         struct drm_device *dev = connector->dev;
 438         struct nouveau_crtc *nv_crtc;
 439         int ret;
 440
 441         nv_crtc = NULL;
 442         if (connector->encoder && connector->encoder->crtc)
 443                 nv_crtc = nouveau_crtc(connector->encoder->crtc);
 444
 445         /* Scaling mode */
 446         if (property == dev->mode_config.scaling_mode_property) {
 447                 bool modeset = false;
 448
 449                 switch (value) {
 450                 case DRM_MODE_SCALE_NONE:
 451                 case DRM_MODE_SCALE_FULLSCREEN:
 452                 case DRM_MODE_SCALE_CENTER:
 453                 case DRM_MODE_SCALE_ASPECT:
 454                         break;
 455                 default:
 456                         return -EINVAL;
 457                 }
 458
 459                 /* LVDS always needs gpu scaling */
 460                 if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS &&
 461                     value == DRM_MODE_SCALE_NONE)
 462                         return -EINVAL;
 463
 464                 /* Changing between GPU and panel scaling requires a full
 465                  * modeset
 466                  */
 467                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 468                     (value == DRM_MODE_SCALE_NONE))
 469                         modeset = true;
 470                 nv_connector->scaling_mode = value;
 471
 472                 if (!nv_crtc)
 473                         return 0;
 474
 475                 if (modeset || !nv_crtc->set_scale) {
 476                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 477                                                         &nv_crtc->base.mode,
 478                                                         nv_crtc->base.x,
 479                                                         nv_crtc->base.y, NULL);
 480                         if (!ret)
 481                                 return -EINVAL;
 482                 } else {
 483                         ret = nv_crtc->set_scale(nv_crtc, true);
 484                         if (ret)
 485                                 return ret;
 486                 }
 487
 488                 return 0;
 489         }
 490
 491         /* Underscan */
 492         if (property == disp->underscan_property) {
 493                 if (nv_connector->underscan != value) {
 494                         nv_connector->underscan = value;
 495                         if (!nv_crtc || !nv_crtc->set_scale)
 496                                 return 0;
 497
 498                         return nv_crtc->set_scale(nv_crtc, true);
 499                 }
 500
 501                 return 0;
 502         }
 503
 504         if (property == disp->underscan_hborder_property) {
 505                 if (nv_connector->underscan_hborder != value) {
 506                         nv_connector->underscan_hborder = value;
 507                         if (!nv_crtc || !nv_crtc->set_scale)
 508                                 return 0;
 509
 510                         return nv_crtc->set_scale(nv_crtc, true);
 511                 }
 512
 513                 return 0;
 514         }
 515
 516         if (property == disp->underscan_vborder_property) {
 517                 if (nv_connector->underscan_vborder != value) {
 518                         nv_connector->underscan_vborder = value;
 519                         if (!nv_crtc || !nv_crtc->set_scale)
 520                                 return 0;
 521
 522                         return nv_crtc->set_scale(nv_crtc, true);
 523                 }
 524
 525                 return 0;
 526         }
 527
 528         /* Dithering */
 529         if (property == disp->dithering_mode) {
 530                 nv_connector->dithering_mode = value;
 531                 if (!nv_crtc || !nv_crtc->set_dither)
 532                         return 0;
 533
 534                 return nv_crtc->set_dither(nv_crtc, true);
 535         }
 536
 537         if (property == disp->dithering_depth) {
 538                 nv_connector->dithering_depth = value;
 539                 if (!nv_crtc || !nv_crtc->set_dither)
 540                         return 0;
 541
 542                 return nv_crtc->set_dither(nv_crtc, true);
 543         }
 544
 545         if (nv_crtc && nv_crtc->set_color_vibrance) {
 546                 /* Hue */
 547                 if (property == disp->vibrant_hue_property) {
 548                         nv_crtc->vibrant_hue = value - 90;
 549                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 550                 }
 551                 /* Saturation */
 552                 if (property == disp->color_vibrance_property) {
 553                         nv_crtc->color_vibrance = value - 100;
 554                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 555                 }
 556         }
 557
 558         if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 559                 return get_slave_funcs(encoder)->set_property(
 560                         encoder, connector, property, value);
 561
 562         return -EINVAL;
 563 }
 564
 565 static struct drm_display_mode *
 566 nouveau_connector_native_mode(struct drm_connector *connector)
 567 {
 568         struct drm_connector_helper_funcs *helper = connector->helper_private;
 569         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 570         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 571         struct drm_device *dev = connector->dev;
 572         struct drm_display_mode *mode, *largest = NULL;
 573         int high_w = 0, high_h = 0, high_v = 0;
 574
 575         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 576                 mode->vrefresh = drm_mode_vrefresh(mode);
 577                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 578                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 579                         continue;
 580
 581                 /* Use preferred mode if there is one.. */
 582                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 583                         NV_DEBUG(drm, "native mode from preferred\n");
 584                         return drm_mode_duplicate(dev, mode);
 585                 }
 586
 587                 /* Otherwise, take the resolution with the largest width, then
 588                  * height, then vertical refresh
 589                  */
 590                 if (mode->hdisplay < high_w)
 591                         continue;
 592
 593                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 594                         continue;
 595
 596                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 597                     mode->vrefresh < high_v)
 598                         continue;
 599
 600                 high_w = mode->hdisplay;
 601                 high_h = mode->vdisplay;
 602                 high_v = mode->vrefresh;
 603                 largest = mode;
 604         }
 605
 606         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
 607                       high_w, high_h, high_v);
 608         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 609 }
 610
 611 struct moderec {
 612         int hdisplay;
 613         int vdisplay;
 614 };
 615
 616 static struct moderec scaler_modes[] = {
 617         { 1920, 1200 },
 618         { 1920, 1080 },
 619         { 1680, 1050 },
 620         { 1600, 1200 },
 621         { 1400, 1050 },
 622         { 1280, 1024 },
 623         { 1280, 960 },
 624         { 1152, 864 },
 625         { 1024, 768 },
 626         { 800, 600 },
 627         { 720, 400 },
 628         { 640, 480 },
 629         { 640, 400 },
 630         { 640, 350 },
 631         {}
 632 };
 633
 634 static int
 635 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 636 {
 637         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 638         struct drm_display_mode *native = nv_connector->native_mode, *m;
 639         struct drm_device *dev = connector->dev;
 640         struct moderec *mode = &scaler_modes[0];
 641         int modes = 0;
 642
 643         if (!native)
 644                 return 0;
 645
 646         while (mode->hdisplay) {
 647                 if (mode->hdisplay <= native->hdisplay &&
 648                     mode->vdisplay <= native->vdisplay) {
 649                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 650                                          drm_mode_vrefresh(native), false,
 651                                          false, false);
 652                         if (!m)
 653                                 continue;
 654
 655                         m->type |= DRM_MODE_TYPE_DRIVER;
 656
 657                         drm_mode_probed_add(connector, m);
 658                         modes++;
 659                 }
 660
 661                 mode++;
 662         }
 663
 664         return modes;
 665 }
 666
 667 static void
 668 nouveau_connector_detect_depth(struct drm_connector *connector)
 669 {
 670         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 671         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 672         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 673         struct nvbios *bios = &drm->vbios;
 674         struct drm_display_mode *mode = nv_connector->native_mode;
 675         bool duallink;
 676
 677         /* if the edid is feeling nice enough to provide this info, use it */
 678         if (nv_connector->edid && connector->display_info.bpc)
 679                 return;
 680
 681         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 682         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 683                 connector->display_info.bpc = 6;
 684                 return;
 685         }
 686
 687         /* we're out of options unless we're LVDS, default to 8bpc */
 688         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 689                 connector->display_info.bpc = 8;
 690                 return;
 691         }
 692
 693         connector->display_info.bpc = 6;
 694
 695         /* LVDS: panel straps */
 696         if (bios->fp_no_ddc) {
 697                 if (bios->fp.if_is_24bit)
 698                         connector->display_info.bpc = 8;
 699                 return;
 700         }
 701
 702         /* LVDS: DDC panel, need to first determine the number of links to
 703          * know which if_is_24bit flag to check...
 704          */
 705         if (nv_connector->edid &&
 706             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 707                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 708         else
 709                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 710
 711         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 712             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 713                 connector->display_info.bpc = 8;
 714 }
 715
 716 static int
 717 nouveau_connector_get_modes(struct drm_connector *connector)
 718 {
 719         struct drm_device *dev = connector->dev;
 720         struct nouveau_drm *drm = nouveau_drm(dev);
 721         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 722         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 723         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 724         int ret = 0;
 725
 726         /* destroy the native mode, the attached monitor could have changed.
 727          */
 728         if (nv_connector->native_mode) {
 729                 drm_mode_destroy(dev, nv_connector->native_mode);
 730                 nv_connector->native_mode = NULL;
 731         }
 732
 733         if (nv_connector->edid)
 734                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 735         else
 736         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 737             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 738              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 739                 struct drm_display_mode mode;
 740
 741                 nouveau_bios_fp_mode(dev, &mode);
 742                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 743         }
 744
 745         /* Determine display colour depth for everything except LVDS now,
 746          * DP requires this before mode_valid() is called.
 747          */
 748         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 749                 nouveau_connector_detect_depth(connector);
 750
 751         /* Find the native mode if this is a digital panel, if we didn't
 752          * find any modes through DDC previously add the native mode to
 753          * the list of modes.
 754          */
 755         if (!nv_connector->native_mode)
 756                 nv_connector->native_mode =
 757                         nouveau_connector_native_mode(connector);
 758         if (ret == 0 && nv_connector->native_mode) {
 759                 struct drm_display_mode *mode;
 760
 761                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 762                 drm_mode_probed_add(connector, mode);
 763                 ret = 1;
 764         }
 765
 766         /* Determine LVDS colour depth, must happen after determining
 767          * "native" mode as some VBIOS tables require us to use the
 768          * pixel clock as part of the lookup...
 769          */
 770         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 771                 nouveau_connector_detect_depth(connector);
 772
 773         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 774                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 775
 776         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 777             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 778             nv_connector->type == DCB_CONNECTOR_eDP)
 779                 ret += nouveau_connector_scaler_modes_add(connector);
 780
 781         return ret;
 782 }
 783
 784 static unsigned
 785 get_tmds_link_bandwidth(struct drm_connector *connector)
 786 {
 787         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 788         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 789         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 790
 791         if (dcb->location != DCB_LOC_ON_CHIP ||
 792             nv_device(drm->device)->chipset >= 0x46)
 793                 return 165000;
 794         else if (nv_device(drm->device)->chipset >= 0x40)
 795                 return 155000;
 796         else if (nv_device(drm->device)->chipset >= 0x18)
 797                 return 135000;
 798         else
 799                 return 112000;
 800 }
 801
 802 static int
 803 nouveau_connector_mode_valid(struct drm_connector *connector,
 804                              struct drm_display_mode *mode)
 805 {
 806         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 807         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 808         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 809         unsigned min_clock = 25000, max_clock = min_clock;
 810         unsigned clock = mode->clock;
 811
 812         switch (nv_encoder->dcb->type) {
 813         case DCB_OUTPUT_LVDS:
 814                 if (nv_connector->native_mode &&
 815                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 816                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 817                         return MODE_PANEL;
 818
 819                 min_clock = 0;
 820                 max_clock = 400000;
 821                 break;
 822         case DCB_OUTPUT_TMDS:
 823                 max_clock = get_tmds_link_bandwidth(connector);
 824                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 825                         max_clock *= 2;
 826                 break;
 827         case DCB_OUTPUT_ANALOG:
 828                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 829                 if (!max_clock)
 830                         max_clock = 350000;
 831                 break;
 832         case DCB_OUTPUT_TV:
 833                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 834         case DCB_OUTPUT_DP:
 835                 max_clock  = nv_encoder->dp.link_nr;
 836                 max_clock *= nv_encoder->dp.link_bw;
 837                 clock = clock * (connector->display_info.bpc * 3) / 10;
 838                 break;
 839         default:
 840                 BUG_ON(1);
 841                 return MODE_BAD;
 842         }
 843
 844         if (clock < min_clock)
 845                 return MODE_CLOCK_LOW;
 846
 847         if (clock > max_clock)
 848                 return MODE_CLOCK_HIGH;
 849
 850         return MODE_OK;
 851 }
 852
 853 static struct drm_encoder *
 854 nouveau_connector_best_encoder(struct drm_connector *connector)
 855 {
 856         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 857
 858         if (nv_connector->detected_encoder)
 859                 return to_drm_encoder(nv_connector->detected_encoder);
 860
 861         return NULL;
 862 }
 863
 864 static const struct drm_connector_helper_funcs
 865 nouveau_connector_helper_funcs = {
 866         .get_modes = nouveau_connector_get_modes,
 867         .mode_valid = nouveau_connector_mode_valid,
 868         .best_encoder = nouveau_connector_best_encoder,
 869 };
 870
 871 static const struct drm_connector_funcs
 872 nouveau_connector_funcs = {
 873         .dpms = drm_helper_connector_dpms,
 874         .save = NULL,
 875         .restore = NULL,
 876         .detect = nouveau_connector_detect,
 877         .destroy = nouveau_connector_destroy,
 878         .fill_modes = drm_helper_probe_single_connector_modes,
 879         .set_property = nouveau_connector_set_property,
 880         .force = nouveau_connector_force
 881 };
 882
 883 static const struct drm_connector_funcs
 884 nouveau_connector_funcs_lvds = {
 885         .dpms = drm_helper_connector_dpms,
 886         .save = NULL,
 887         .restore = NULL,
 888         .detect = nouveau_connector_detect_lvds,
 889         .destroy = nouveau_connector_destroy,
 890         .fill_modes = drm_helper_probe_single_connector_modes,
 891         .set_property = nouveau_connector_set_property,
 892         .force = nouveau_connector_force
 893 };
 894
 895 static void
 896 nouveau_connector_hotplug_work(struct work_struct *work)
 897 {
 898         struct nouveau_connector *nv_connector =
 899                 container_of(work, struct nouveau_connector, hpd_work);
 900         struct drm_connector *connector = &nv_connector->base;
 901         struct drm_device *dev = connector->dev;
 902         struct nouveau_drm *drm = nouveau_drm(dev);
 903         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 904         bool plugged = gpio->get(gpio, 0, nv_connector->hpd.func, 0xff);
 905
 906         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un",
 907                  drm_get_connector_name(connector));
 908
 909         if (plugged)
 910                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
 911         else
 912                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
 913
 914         drm_helper_hpd_irq_event(dev);
 915 }
 916
 917 static int
 918 nouveau_connector_hotplug(struct nouveau_eventh *event, int index)
 919 {
 920         struct nouveau_connector *nv_connector =
 921                 container_of(event, struct nouveau_connector, hpd_func);
 922         schedule_work(&nv_connector->hpd_work);
 923         return NVKM_EVENT_KEEP;
 924 }
 925
 926 static int
 927 drm_conntype_from_dcb(enum dcb_connector_type dcb)
 928 {
 929         switch (dcb) {
 930         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
 931         case DCB_CONNECTOR_TV_0     :
 932         case DCB_CONNECTOR_TV_1     :
 933         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
 934         case DCB_CONNECTOR_DMS59_0  :
 935         case DCB_CONNECTOR_DMS59_1  :
 936         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
 937         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
 938         case DCB_CONNECTOR_LVDS     :
 939         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
 940         case DCB_CONNECTOR_DMS59_DP0:
 941         case DCB_CONNECTOR_DMS59_DP1:
 942         case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
 943         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
 944         case DCB_CONNECTOR_HDMI_0   :
 945         case DCB_CONNECTOR_HDMI_1   : return DRM_MODE_CONNECTOR_HDMIA;
 946         default:
 947                 break;
 948         }
 949
 950         return DRM_MODE_CONNECTOR_Unknown;
 951 }
 952
 953 struct drm_connector *
 954 nouveau_connector_create(struct drm_device *dev, int index)
 955 {
 956         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 957         struct nouveau_drm *drm = nouveau_drm(dev);
 958         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 959         struct nouveau_display *disp = nouveau_display(dev);
 960         struct nouveau_connector *nv_connector = NULL;
 961         struct drm_connector *connector;
 962         int type, ret = 0;
 963         bool dummy;
 964
 965         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 966                 nv_connector = nouveau_connector(connector);
 967                 if (nv_connector->index == index)
 968                         return connector;
 969         }
 970
 971         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 972         if (!nv_connector)
 973                 return ERR_PTR(-ENOMEM);
 974
 975         connector = &nv_connector->base;
 976         INIT_WORK(&nv_connector->hpd_work, nouveau_connector_hotplug_work);
 977         nv_connector->index = index;
 978
 979         /* attempt to parse vbios connector type and hotplug gpio */
 980         nv_connector->dcb = olddcb_conn(dev, index);
 981         if (nv_connector->dcb) {
 982                 static const u8 hpd[16] = {
 983                         0xff, 0x07, 0x08, 0xff, 0xff, 0x51, 0x52, 0xff,
 984                         0xff, 0xff, 0xff, 0xff, 0xff, 0x5e, 0x5f, 0x60,
 985                 };
 986
 987                 u32 entry = ROM16(nv_connector->dcb[0]);
 988                 if (olddcb_conntab(dev)[3] >= 4)
 989                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
 990
 991                 ret = gpio->find(gpio, 0, hpd[ffs((entry & 0x07033000) >> 12)],
 992                                  DCB_GPIO_UNUSED, &nv_connector->hpd);
 993                 nv_connector->hpd_func.func = nouveau_connector_hotplug;
 994                 if (ret)
 995                         nv_connector->hpd.func = DCB_GPIO_UNUSED;
 996
 997                 nv_connector->type = nv_connector->dcb[0];
 998                 if (drm_conntype_from_dcb(nv_connector->type) ==
 999                                           DRM_MODE_CONNECTOR_Unknown) {
1000                         NV_WARN(drm, "unknown connector type %02x\n",
1001                                 nv_connector->type);
1002                         nv_connector->type = DCB_CONNECTOR_NONE;
1003                 }
1004
1005                 /* Gigabyte NX85T */
1006                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1007                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1008                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1009                 }
1010
1011                 /* Gigabyte GV-NX86T512H */
1012                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1013                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1014                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1015                 }
1016         } else {
1017                 nv_connector->type = DCB_CONNECTOR_NONE;
1018                 nv_connector->hpd.func = DCB_GPIO_UNUSED;
1019         }
1020
1021         /* no vbios data, or an unknown dcb connector type - attempt to
1022          * figure out something suitable ourselves
1023          */
1024         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1025                 struct nouveau_drm *drm = nouveau_drm(dev);
1026                 struct dcb_table *dcbt = &drm->vbios.dcb;
1027                 u32 encoders = 0;
1028                 int i;
1029
1030                 for (i = 0; i < dcbt->entries; i++) {
1031                         if (dcbt->entry[i].connector == nv_connector->index)
1032                                 encoders |= (1 << dcbt->entry[i].type);
1033                 }
1034
1035                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1036                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1037                                 nv_connector->type = DCB_CONNECTOR_DP;
1038                         else
1039                                 nv_connector->type = DCB_CONNECTOR_eDP;
1040                 } else
1041                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1042                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1043                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1044                         else
1045                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1046                 } else
1047                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1048                         nv_connector->type = DCB_CONNECTOR_VGA;
1049                 } else
1050                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1051                         nv_connector->type = DCB_CONNECTOR_LVDS;
1052                 } else
1053                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1054                         nv_connector->type = DCB_CONNECTOR_TV_0;
1055                 }
1056         }
1057
1058         type = drm_conntype_from_dcb(nv_connector->type);
1059         if (type == DRM_MODE_CONNECTOR_LVDS) {
1060                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1061                 if (ret) {
1062                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1063                         kfree(nv_connector);
1064                         return ERR_PTR(ret);
1065                 }
1066
1067                 funcs = &nouveau_connector_funcs_lvds;
1068         } else {
1069                 funcs = &nouveau_connector_funcs;
1070         }
1071
1072         /* defaults, will get overridden in detect() */
1073         connector->interlace_allowed = false;
1074         connector->doublescan_allowed = false;
1075
1076         drm_connector_init(dev, connector, funcs, type);
1077         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1078
1079         /* Init DVI-I specific properties */
1080         if (nv_connector->type == DCB_CONNECTOR_DVI_I)
1081                 drm_object_attach_property(&connector->base, dev->mode_config.dvi_i_subconnector_property, 0);
1082
1083         /* Add overscan compensation options to digital outputs */
1084         if (disp->underscan_property &&
1085             (type == DRM_MODE_CONNECTOR_DVID ||
1086              type == DRM_MODE_CONNECTOR_DVII ||
1087              type == DRM_MODE_CONNECTOR_HDMIA ||
1088              type == DRM_MODE_CONNECTOR_DisplayPort)) {
1089                 drm_object_attach_property(&connector->base,
1090                                               disp->underscan_property,
1091                                               UNDERSCAN_OFF);
1092                 drm_object_attach_property(&connector->base,
1093                                               disp->underscan_hborder_property,
1094                                               0);
1095                 drm_object_attach_property(&connector->base,
1096                                               disp->underscan_vborder_property,
1097                                               0);
1098         }
1099
1100         /* Add hue and saturation options */
1101         if (disp->vibrant_hue_property)
1102                 drm_object_attach_property(&connector->base,
1103                                               disp->vibrant_hue_property,
1104                                               90);
1105         if (disp->color_vibrance_property)
1106                 drm_object_attach_property(&connector->base,
1107                                               disp->color_vibrance_property,
1108                                               150);
1109
1110         switch (nv_connector->type) {
1111         case DCB_CONNECTOR_VGA:
1112                 if (nv_device(drm->device)->card_type >= NV_50) {
1113                         drm_object_attach_property(&connector->base,
1114                                         dev->mode_config.scaling_mode_property,
1115                                         nv_connector->scaling_mode);
1116                 }
1117                 /* fall-through */
1118         case DCB_CONNECTOR_TV_0:
1119         case DCB_CONNECTOR_TV_1:
1120         case DCB_CONNECTOR_TV_3:
1121                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1122                 break;
1123         default:
1124                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1125
1126                 drm_object_attach_property(&connector->base,
1127                                 dev->mode_config.scaling_mode_property,
1128                                 nv_connector->scaling_mode);
1129                 if (disp->dithering_mode) {
1130                         nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1131                         drm_object_attach_property(&connector->base,
1132                                                 disp->dithering_mode,
1133                                                 nv_connector->dithering_mode);
1134                 }
1135                 if (disp->dithering_depth) {
1136                         nv_connector->dithering_depth = DITHERING_DEPTH_AUTO;
1137                         drm_object_attach_property(&connector->base,
1138                                                 disp->dithering_depth,
1139                                                 nv_connector->dithering_depth);
1140                 }
1141                 break;
1142         }
1143
1144         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1145         if (nv_connector->hpd.func != DCB_GPIO_UNUSED)
1146                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1147
1148         drm_sysfs_connector_add(connector);
1149         return connector;
1150 }