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 <linux/pm_runtime.h>
  30
  31 #include <drm/drmP.h>
  32 #include <drm/drm_edid.h>
  33 #include <drm/drm_crtc_helper.h>
  34
  35 #include "nouveau_reg.h"
  36 #include "nouveau_drm.h"
  37 #include "dispnv04/hw.h"
  38 #include "nouveau_acpi.h"
  39
  40 #include "nouveau_display.h"
  41 #include "nouveau_connector.h"
  42 #include "nouveau_encoder.h"
  43 #include "nouveau_crtc.h"
  44
  45 #include <subdev/i2c.h>
  46 #include <subdev/gpio.h>
  47
  48 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
  49 static int nouveau_tv_disable = 0;
  50 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
  51
  52 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
  53 static int nouveau_ignorelid = 0;
  54 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
  55
  56 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
  57 static int nouveau_duallink = 1;
  58 module_param_named(duallink, nouveau_duallink, int, 0400);
  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         kfree(nv_connector->edid);
 104         drm_sysfs_connector_remove(connector);
 105         drm_connector_cleanup(connector);
 106         kfree(connector);
 107 }
 108
 109 static struct nouveau_i2c_port *
 110 nouveau_connector_ddc_detect(struct drm_connector *connector,
 111                              struct nouveau_encoder **pnv_encoder)
 112 {
 113         struct drm_device *dev = connector->dev;
 114         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 115         struct nouveau_drm *drm = nouveau_drm(dev);
 116         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 117         struct nouveau_i2c_port *port = NULL;
 118         int i, panel = -ENODEV;
 119
 120         /* eDP panels need powering on by us (if the VBIOS doesn't default it
 121          * to on) before doing any AUX channel transactions.  LVDS panel power
 122          * is handled by the SOR itself, and not required for LVDS DDC.
 123          */
 124         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 125                 panel = gpio->get(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff);
 126                 if (panel == 0) {
 127                         gpio->set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, 1);
 128                         msleep(300);
 129                 }
 130         }
 131
 132         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 133                 struct nouveau_encoder *nv_encoder;
 134                 struct drm_mode_object *obj;
 135                 int id;
 136
 137                 id = connector->encoder_ids[i];
 138                 if (!id)
 139                         break;
 140
 141                 obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
 142                 if (!obj)
 143                         continue;
 144                 nv_encoder = nouveau_encoder(obj_to_encoder(obj));
 145
 146                 port = nv_encoder->i2c;
 147                 if (port && nv_probe_i2c(port, 0x50)) {
 148                         *pnv_encoder = nv_encoder;
 149                         break;
 150                 }
 151
 152                 port = NULL;
 153         }
 154
 155         /* eDP panel not detected, restore panel power GPIO to previous
 156          * state to avoid confusing the SOR for other output types.
 157          */
 158         if (!port && panel == 0)
 159                 gpio->set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, panel);
 160
 161         return port;
 162 }
 163
 164 static struct nouveau_encoder *
 165 nouveau_connector_of_detect(struct drm_connector *connector)
 166 {
 167 #ifdef __powerpc__
 168         struct drm_device *dev = connector->dev;
 169         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 170         struct nouveau_encoder *nv_encoder;
 171         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 172
 173         if (!dn ||
 174             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 175               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 176                 return NULL;
 177
 178         for_each_child_of_node(dn, cn) {
 179                 const char *name = of_get_property(cn, "name", NULL);
 180                 const void *edid = of_get_property(cn, "EDID", NULL);
 181                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 182
 183                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 184                         nv_connector->edid =
 185                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 186                         of_node_put(cn);
 187                         return nv_encoder;
 188                 }
 189         }
 190 #endif
 191         return NULL;
 192 }
 193
 194 static void
 195 nouveau_connector_set_encoder(struct drm_connector *connector,
 196                               struct nouveau_encoder *nv_encoder)
 197 {
 198         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 199         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 200         struct drm_device *dev = connector->dev;
 201
 202         if (nv_connector->detected_encoder == nv_encoder)
 203                 return;
 204         nv_connector->detected_encoder = nv_encoder;
 205
 206         if (nv_device(drm->device)->card_type >= NV_50) {
 207                 connector->interlace_allowed = true;
 208                 connector->doublescan_allowed = true;
 209         } else
 210         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 211             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 212                 connector->doublescan_allowed = false;
 213                 connector->interlace_allowed = false;
 214         } else {
 215                 connector->doublescan_allowed = true;
 216                 if (nv_device(drm->device)->card_type == NV_20 ||
 217                    (nv_device(drm->device)->card_type == NV_10 &&
 218                     (dev->pci_device & 0x0ff0) != 0x0100 &&
 219                     (dev->pci_device & 0x0ff0) != 0x0150))
 220                         /* HW is broken */
 221                         connector->interlace_allowed = false;
 222                 else
 223                         connector->interlace_allowed = true;
 224         }
 225
 226         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 227                 drm_object_property_set_value(&connector->base,
 228                         dev->mode_config.dvi_i_subconnector_property,
 229                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 230                         DRM_MODE_SUBCONNECTOR_DVID :
 231                         DRM_MODE_SUBCONNECTOR_DVIA);
 232         }
 233 }
 234
 235 static enum drm_connector_status
 236 nouveau_connector_detect(struct drm_connector *connector, bool force)
 237 {
 238         struct drm_device *dev = connector->dev;
 239         struct nouveau_drm *drm = nouveau_drm(dev);
 240         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 241         struct nouveau_encoder *nv_encoder = NULL;
 242         struct nouveau_encoder *nv_partner;
 243         struct nouveau_i2c_port *i2c;
 244         int type;
 245         int ret;
 246         enum drm_connector_status conn_status = connector_status_disconnected;
 247
 248         /* Cleanup the previous EDID block. */
 249         if (nv_connector->edid) {
 250                 drm_mode_connector_update_edid_property(connector, NULL);
 251                 kfree(nv_connector->edid);
 252                 nv_connector->edid = NULL;
 253         }
 254
 255         ret = pm_runtime_get_sync(connector->dev->dev);
 256         if (ret < 0)
 257                 return conn_status;
 258
 259         i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 260         if (i2c) {
 261                 nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
 262                 drm_mode_connector_update_edid_property(connector,
 263                                                         nv_connector->edid);
 264                 if (!nv_connector->edid) {
 265                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 266                                  drm_get_connector_name(connector));
 267                         goto detect_analog;
 268                 }
 269
 270                 if (nv_encoder->dcb->type == DCB_OUTPUT_DP &&
 271                     !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
 272                         NV_ERROR(drm, "Detected %s, but failed init\n",
 273                                  drm_get_connector_name(connector));
 274                         conn_status = connector_status_disconnected;
 275                         goto out;
 276                 }
 277
 278                 /* Override encoder type for DVI-I based on whether EDID
 279                  * says the display is digital or analog, both use the
 280                  * same i2c channel so the value returned from ddc_detect
 281                  * isn't necessarily correct.
 282                  */
 283                 nv_partner = NULL;
 284                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 285                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 286                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 287                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 288
 289                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 290                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 291                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 292                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 293                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 294                                 type = DCB_OUTPUT_TMDS;
 295                         else
 296                                 type = DCB_OUTPUT_ANALOG;
 297
 298                         nv_encoder = find_encoder(connector, type);
 299                 }
 300
 301                 nouveau_connector_set_encoder(connector, nv_encoder);
 302                 conn_status = connector_status_connected;
 303                 goto out;
 304         }
 305
 306         nv_encoder = nouveau_connector_of_detect(connector);
 307         if (nv_encoder) {
 308                 nouveau_connector_set_encoder(connector, nv_encoder);
 309                 conn_status = connector_status_connected;
 310                 goto out;
 311         }
 312
 313 detect_analog:
 314         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 315         if (!nv_encoder && !nouveau_tv_disable)
 316                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 317         if (nv_encoder && force) {
 318                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 319                 struct drm_encoder_helper_funcs *helper =
 320                                                 encoder->helper_private;
 321
 322                 if (helper->detect(encoder, connector) ==
 323                                                 connector_status_connected) {
 324                         nouveau_connector_set_encoder(connector, nv_encoder);
 325                         conn_status = connector_status_connected;
 326                         goto out;
 327                 }
 328
 329         }
 330
 331  out:
 332
 333         pm_runtime_mark_last_busy(connector->dev->dev);
 334         pm_runtime_put_autosuspend(connector->dev->dev);
 335
 336         return conn_status;
 337 }
 338
 339 static enum drm_connector_status
 340 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 341 {
 342         struct drm_device *dev = connector->dev;
 343         struct nouveau_drm *drm = nouveau_drm(dev);
 344         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 345         struct nouveau_encoder *nv_encoder = NULL;
 346         enum drm_connector_status status = connector_status_disconnected;
 347
 348         /* Cleanup the previous EDID block. */
 349         if (nv_connector->edid) {
 350                 drm_mode_connector_update_edid_property(connector, NULL);
 351                 kfree(nv_connector->edid);
 352                 nv_connector->edid = NULL;
 353         }
 354
 355         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 356         if (!nv_encoder)
 357                 return connector_status_disconnected;
 358
 359         /* Try retrieving EDID via DDC */
 360         if (!drm->vbios.fp_no_ddc) {
 361                 status = nouveau_connector_detect(connector, force);
 362                 if (status == connector_status_connected)
 363                         goto out;
 364         }
 365
 366         /* On some laptops (Sony, i'm looking at you) there appears to
 367          * be no direct way of accessing the panel's EDID.  The only
 368          * option available to us appears to be to ask ACPI for help..
 369          *
 370          * It's important this check's before trying straps, one of the
 371          * said manufacturer's laptops are configured in such a way
 372          * the nouveau decides an entry in the VBIOS FP mode table is
 373          * valid - it's not (rh#613284)
 374          */
 375         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 376                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 377                         status = connector_status_connected;
 378                         goto out;
 379                 }
 380         }
 381
 382         /* If no EDID found above, and the VBIOS indicates a hardcoded
 383          * modeline is avalilable for the panel, set it as the panel's
 384          * native mode and exit.
 385          */
 386         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 387             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 388                 status = connector_status_connected;
 389                 goto out;
 390         }
 391
 392         /* Still nothing, some VBIOS images have a hardcoded EDID block
 393          * stored for the panel stored in them.
 394          */
 395         if (!drm->vbios.fp_no_ddc) {
 396                 struct edid *edid =
 397                         (struct edid *)nouveau_bios_embedded_edid(dev);
 398                 if (edid) {
 399                         nv_connector->edid =
 400                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 401                         if (nv_connector->edid)
 402                                 status = connector_status_connected;
 403                 }
 404         }
 405
 406 out:
 407 #if defined(CONFIG_ACPI_BUTTON) || \
 408         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 409         if (status == connector_status_connected &&
 410             !nouveau_ignorelid && !acpi_lid_open())
 411                 status = connector_status_unknown;
 412 #endif
 413
 414         drm_mode_connector_update_edid_property(connector, nv_connector->edid);
 415         nouveau_connector_set_encoder(connector, nv_encoder);
 416         return status;
 417 }
 418
 419 static void
 420 nouveau_connector_force(struct drm_connector *connector)
 421 {
 422         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 423         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 424         struct nouveau_encoder *nv_encoder;
 425         int type;
 426
 427         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 428                 if (connector->force == DRM_FORCE_ON_DIGITAL)
 429                         type = DCB_OUTPUT_TMDS;
 430                 else
 431                         type = DCB_OUTPUT_ANALOG;
 432         } else
 433                 type = DCB_OUTPUT_ANY;
 434
 435         nv_encoder = find_encoder(connector, type);
 436         if (!nv_encoder) {
 437                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
 438                          drm_get_connector_name(connector));
 439                 connector->status = connector_status_disconnected;
 440                 return;
 441         }
 442
 443         nouveau_connector_set_encoder(connector, nv_encoder);
 444 }
 445
 446 static int
 447 nouveau_connector_set_property(struct drm_connector *connector,
 448                                struct drm_property *property, uint64_t value)
 449 {
 450         struct nouveau_display *disp = nouveau_display(connector->dev);
 451         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 452         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 453         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 454         struct drm_device *dev = connector->dev;
 455         struct nouveau_crtc *nv_crtc;
 456         int ret;
 457
 458         nv_crtc = NULL;
 459         if (connector->encoder && connector->encoder->crtc)
 460                 nv_crtc = nouveau_crtc(connector->encoder->crtc);
 461
 462         /* Scaling mode */
 463         if (property == dev->mode_config.scaling_mode_property) {
 464                 bool modeset = false;
 465
 466                 switch (value) {
 467                 case DRM_MODE_SCALE_NONE:
 468                 case DRM_MODE_SCALE_FULLSCREEN:
 469                 case DRM_MODE_SCALE_CENTER:
 470                 case DRM_MODE_SCALE_ASPECT:
 471                         break;
 472                 default:
 473                         return -EINVAL;
 474                 }
 475
 476                 /* LVDS always needs gpu scaling */
 477                 if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS &&
 478                     value == DRM_MODE_SCALE_NONE)
 479                         return -EINVAL;
 480
 481                 /* Changing between GPU and panel scaling requires a full
 482                  * modeset
 483                  */
 484                 if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
 485                     (value == DRM_MODE_SCALE_NONE))
 486                         modeset = true;
 487                 nv_connector->scaling_mode = value;
 488
 489                 if (!nv_crtc)
 490                         return 0;
 491
 492                 if (modeset || !nv_crtc->set_scale) {
 493                         ret = drm_crtc_helper_set_mode(&nv_crtc->base,
 494                                                         &nv_crtc->base.mode,
 495                                                         nv_crtc->base.x,
 496                                                         nv_crtc->base.y, NULL);
 497                         if (!ret)
 498                                 return -EINVAL;
 499                 } else {
 500                         ret = nv_crtc->set_scale(nv_crtc, true);
 501                         if (ret)
 502                                 return ret;
 503                 }
 504
 505                 return 0;
 506         }
 507
 508         /* Underscan */
 509         if (property == disp->underscan_property) {
 510                 if (nv_connector->underscan != value) {
 511                         nv_connector->underscan = value;
 512                         if (!nv_crtc || !nv_crtc->set_scale)
 513                                 return 0;
 514
 515                         return nv_crtc->set_scale(nv_crtc, true);
 516                 }
 517
 518                 return 0;
 519         }
 520
 521         if (property == disp->underscan_hborder_property) {
 522                 if (nv_connector->underscan_hborder != value) {
 523                         nv_connector->underscan_hborder = value;
 524                         if (!nv_crtc || !nv_crtc->set_scale)
 525                                 return 0;
 526
 527                         return nv_crtc->set_scale(nv_crtc, true);
 528                 }
 529
 530                 return 0;
 531         }
 532
 533         if (property == disp->underscan_vborder_property) {
 534                 if (nv_connector->underscan_vborder != value) {
 535                         nv_connector->underscan_vborder = value;
 536                         if (!nv_crtc || !nv_crtc->set_scale)
 537                                 return 0;
 538
 539                         return nv_crtc->set_scale(nv_crtc, true);
 540                 }
 541
 542                 return 0;
 543         }
 544
 545         /* Dithering */
 546         if (property == disp->dithering_mode) {
 547                 nv_connector->dithering_mode = value;
 548                 if (!nv_crtc || !nv_crtc->set_dither)
 549                         return 0;
 550
 551                 return nv_crtc->set_dither(nv_crtc, true);
 552         }
 553
 554         if (property == disp->dithering_depth) {
 555                 nv_connector->dithering_depth = value;
 556                 if (!nv_crtc || !nv_crtc->set_dither)
 557                         return 0;
 558
 559                 return nv_crtc->set_dither(nv_crtc, true);
 560         }
 561
 562         if (nv_crtc && nv_crtc->set_color_vibrance) {
 563                 /* Hue */
 564                 if (property == disp->vibrant_hue_property) {
 565                         nv_crtc->vibrant_hue = value - 90;
 566                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 567                 }
 568                 /* Saturation */
 569                 if (property == disp->color_vibrance_property) {
 570                         nv_crtc->color_vibrance = value - 100;
 571                         return nv_crtc->set_color_vibrance(nv_crtc, true);
 572                 }
 573         }
 574
 575         if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 576                 return get_slave_funcs(encoder)->set_property(
 577                         encoder, connector, property, value);
 578
 579         return -EINVAL;
 580 }
 581
 582 static struct drm_display_mode *
 583 nouveau_connector_native_mode(struct drm_connector *connector)
 584 {
 585         struct drm_connector_helper_funcs *helper = connector->helper_private;
 586         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 587         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 588         struct drm_device *dev = connector->dev;
 589         struct drm_display_mode *mode, *largest = NULL;
 590         int high_w = 0, high_h = 0, high_v = 0;
 591
 592         list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
 593                 mode->vrefresh = drm_mode_vrefresh(mode);
 594                 if (helper->mode_valid(connector, mode) != MODE_OK ||
 595                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
 596                         continue;
 597
 598                 /* Use preferred mode if there is one.. */
 599                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
 600                         NV_DEBUG(drm, "native mode from preferred\n");
 601                         return drm_mode_duplicate(dev, mode);
 602                 }
 603
 604                 /* Otherwise, take the resolution with the largest width, then
 605                  * height, then vertical refresh
 606                  */
 607                 if (mode->hdisplay < high_w)
 608                         continue;
 609
 610                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
 611                         continue;
 612
 613                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
 614                     mode->vrefresh < high_v)
 615                         continue;
 616
 617                 high_w = mode->hdisplay;
 618                 high_h = mode->vdisplay;
 619                 high_v = mode->vrefresh;
 620                 largest = mode;
 621         }
 622
 623         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
 624                       high_w, high_h, high_v);
 625         return largest ? drm_mode_duplicate(dev, largest) : NULL;
 626 }
 627
 628 struct moderec {
 629         int hdisplay;
 630         int vdisplay;
 631 };
 632
 633 static struct moderec scaler_modes[] = {
 634         { 1920, 1200 },
 635         { 1920, 1080 },
 636         { 1680, 1050 },
 637         { 1600, 1200 },
 638         { 1400, 1050 },
 639         { 1280, 1024 },
 640         { 1280, 960 },
 641         { 1152, 864 },
 642         { 1024, 768 },
 643         { 800, 600 },
 644         { 720, 400 },
 645         { 640, 480 },
 646         { 640, 400 },
 647         { 640, 350 },
 648         {}
 649 };
 650
 651 static int
 652 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 653 {
 654         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 655         struct drm_display_mode *native = nv_connector->native_mode, *m;
 656         struct drm_device *dev = connector->dev;
 657         struct moderec *mode = &scaler_modes[0];
 658         int modes = 0;
 659
 660         if (!native)
 661                 return 0;
 662
 663         while (mode->hdisplay) {
 664                 if (mode->hdisplay <= native->hdisplay &&
 665                     mode->vdisplay <= native->vdisplay) {
 666                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 667                                          drm_mode_vrefresh(native), false,
 668                                          false, false);
 669                         if (!m)
 670                                 continue;
 671
 672                         m->type |= DRM_MODE_TYPE_DRIVER;
 673
 674                         drm_mode_probed_add(connector, m);
 675                         modes++;
 676                 }
 677
 678                 mode++;
 679         }
 680
 681         return modes;
 682 }
 683
 684 static void
 685 nouveau_connector_detect_depth(struct drm_connector *connector)
 686 {
 687         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 688         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 689         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 690         struct nvbios *bios = &drm->vbios;
 691         struct drm_display_mode *mode = nv_connector->native_mode;
 692         bool duallink;
 693
 694         /* if the edid is feeling nice enough to provide this info, use it */
 695         if (nv_connector->edid && connector->display_info.bpc)
 696                 return;
 697
 698         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 699         if (nv_connector->type == DCB_CONNECTOR_eDP) {
 700                 connector->display_info.bpc = 6;
 701                 return;
 702         }
 703
 704         /* we're out of options unless we're LVDS, default to 8bpc */
 705         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 706                 connector->display_info.bpc = 8;
 707                 return;
 708         }
 709
 710         connector->display_info.bpc = 6;
 711
 712         /* LVDS: panel straps */
 713         if (bios->fp_no_ddc) {
 714                 if (bios->fp.if_is_24bit)
 715                         connector->display_info.bpc = 8;
 716                 return;
 717         }
 718
 719         /* LVDS: DDC panel, need to first determine the number of links to
 720          * know which if_is_24bit flag to check...
 721          */
 722         if (nv_connector->edid &&
 723             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 724                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
 725         else
 726                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
 727
 728         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 729             ( duallink && (bios->fp.strapless_is_24bit & 2)))
 730                 connector->display_info.bpc = 8;
 731 }
 732
 733 static int
 734 nouveau_connector_get_modes(struct drm_connector *connector)
 735 {
 736         struct drm_device *dev = connector->dev;
 737         struct nouveau_drm *drm = nouveau_drm(dev);
 738         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 739         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 740         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 741         int ret = 0;
 742
 743         /* destroy the native mode, the attached monitor could have changed.
 744          */
 745         if (nv_connector->native_mode) {
 746                 drm_mode_destroy(dev, nv_connector->native_mode);
 747                 nv_connector->native_mode = NULL;
 748         }
 749
 750         if (nv_connector->edid)
 751                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 752         else
 753         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 754             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 755              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 756                 struct drm_display_mode mode;
 757
 758                 nouveau_bios_fp_mode(dev, &mode);
 759                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 760         }
 761
 762         /* Determine display colour depth for everything except LVDS now,
 763          * DP requires this before mode_valid() is called.
 764          */
 765         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 766                 nouveau_connector_detect_depth(connector);
 767
 768         /* Find the native mode if this is a digital panel, if we didn't
 769          * find any modes through DDC previously add the native mode to
 770          * the list of modes.
 771          */
 772         if (!nv_connector->native_mode)
 773                 nv_connector->native_mode =
 774                         nouveau_connector_native_mode(connector);
 775         if (ret == 0 && nv_connector->native_mode) {
 776                 struct drm_display_mode *mode;
 777
 778                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 779                 drm_mode_probed_add(connector, mode);
 780                 ret = 1;
 781         }
 782
 783         /* Determine LVDS colour depth, must happen after determining
 784          * "native" mode as some VBIOS tables require us to use the
 785          * pixel clock as part of the lookup...
 786          */
 787         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 788                 nouveau_connector_detect_depth(connector);
 789
 790         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 791                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 792
 793         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 794             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 795             nv_connector->type == DCB_CONNECTOR_eDP)
 796                 ret += nouveau_connector_scaler_modes_add(connector);
 797
 798         return ret;
 799 }
 800
 801 static unsigned
 802 get_tmds_link_bandwidth(struct drm_connector *connector)
 803 {
 804         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 805         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 806         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 807
 808         if (dcb->location != DCB_LOC_ON_CHIP ||
 809             nv_device(drm->device)->chipset >= 0x46)
 810                 return 165000;
 811         else if (nv_device(drm->device)->chipset >= 0x40)
 812                 return 155000;
 813         else if (nv_device(drm->device)->chipset >= 0x18)
 814                 return 135000;
 815         else
 816                 return 112000;
 817 }
 818
 819 static int
 820 nouveau_connector_mode_valid(struct drm_connector *connector,
 821                              struct drm_display_mode *mode)
 822 {
 823         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 824         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 825         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 826         unsigned min_clock = 25000, max_clock = min_clock;
 827         unsigned clock = mode->clock;
 828
 829         switch (nv_encoder->dcb->type) {
 830         case DCB_OUTPUT_LVDS:
 831                 if (nv_connector->native_mode &&
 832                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
 833                      mode->vdisplay > nv_connector->native_mode->vdisplay))
 834                         return MODE_PANEL;
 835
 836                 min_clock = 0;
 837                 max_clock = 400000;
 838                 break;
 839         case DCB_OUTPUT_TMDS:
 840                 max_clock = get_tmds_link_bandwidth(connector);
 841                 if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
 842                         max_clock *= 2;
 843                 break;
 844         case DCB_OUTPUT_ANALOG:
 845                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
 846                 if (!max_clock)
 847                         max_clock = 350000;
 848                 break;
 849         case DCB_OUTPUT_TV:
 850                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
 851         case DCB_OUTPUT_DP:
 852                 max_clock  = nv_encoder->dp.link_nr;
 853                 max_clock *= nv_encoder->dp.link_bw;
 854                 clock = clock * (connector->display_info.bpc * 3) / 10;
 855                 break;
 856         default:
 857                 BUG_ON(1);
 858                 return MODE_BAD;
 859         }
 860
 861         if (clock < min_clock)
 862                 return MODE_CLOCK_LOW;
 863
 864         if (clock > max_clock)
 865                 return MODE_CLOCK_HIGH;
 866
 867         return MODE_OK;
 868 }
 869
 870 static struct drm_encoder *
 871 nouveau_connector_best_encoder(struct drm_connector *connector)
 872 {
 873         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 874
 875         if (nv_connector->detected_encoder)
 876                 return to_drm_encoder(nv_connector->detected_encoder);
 877
 878         return NULL;
 879 }
 880
 881 static const struct drm_connector_helper_funcs
 882 nouveau_connector_helper_funcs = {
 883         .get_modes = nouveau_connector_get_modes,
 884         .mode_valid = nouveau_connector_mode_valid,
 885         .best_encoder = nouveau_connector_best_encoder,
 886 };
 887
 888 static const struct drm_connector_funcs
 889 nouveau_connector_funcs = {
 890         .dpms = drm_helper_connector_dpms,
 891         .save = NULL,
 892         .restore = NULL,
 893         .detect = nouveau_connector_detect,
 894         .destroy = nouveau_connector_destroy,
 895         .fill_modes = drm_helper_probe_single_connector_modes,
 896         .set_property = nouveau_connector_set_property,
 897         .force = nouveau_connector_force
 898 };
 899
 900 static const struct drm_connector_funcs
 901 nouveau_connector_funcs_lvds = {
 902         .dpms = drm_helper_connector_dpms,
 903         .save = NULL,
 904         .restore = NULL,
 905         .detect = nouveau_connector_detect_lvds,
 906         .destroy = nouveau_connector_destroy,
 907         .fill_modes = drm_helper_probe_single_connector_modes,
 908         .set_property = nouveau_connector_set_property,
 909         .force = nouveau_connector_force
 910 };
 911
 912 static void
 913 nouveau_connector_hotplug_work(struct work_struct *work)
 914 {
 915         struct nouveau_connector *nv_connector =
 916                 container_of(work, struct nouveau_connector, hpd_work);
 917         struct drm_connector *connector = &nv_connector->base;
 918         struct drm_device *dev = connector->dev;
 919         struct nouveau_drm *drm = nouveau_drm(dev);
 920         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 921         bool plugged = gpio->get(gpio, 0, nv_connector->hpd.func, 0xff);
 922
 923         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un",
 924                  drm_get_connector_name(connector));
 925
 926         if (plugged)
 927                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
 928         else
 929                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
 930
 931         drm_helper_hpd_irq_event(dev);
 932 }
 933
 934 static int
 935 nouveau_connector_hotplug(struct nouveau_eventh *event, int index)
 936 {
 937         struct nouveau_connector *nv_connector =
 938                 container_of(event, struct nouveau_connector, hpd_func);
 939         schedule_work(&nv_connector->hpd_work);
 940         return NVKM_EVENT_KEEP;
 941 }
 942
 943 static int
 944 drm_conntype_from_dcb(enum dcb_connector_type dcb)
 945 {
 946         switch (dcb) {
 947         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
 948         case DCB_CONNECTOR_TV_0     :
 949         case DCB_CONNECTOR_TV_1     :
 950         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
 951         case DCB_CONNECTOR_DMS59_0  :
 952         case DCB_CONNECTOR_DMS59_1  :
 953         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
 954         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
 955         case DCB_CONNECTOR_LVDS     :
 956         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
 957         case DCB_CONNECTOR_DMS59_DP0:
 958         case DCB_CONNECTOR_DMS59_DP1:
 959         case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
 960         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
 961         case DCB_CONNECTOR_HDMI_0   :
 962         case DCB_CONNECTOR_HDMI_1   : return DRM_MODE_CONNECTOR_HDMIA;
 963         default:
 964                 break;
 965         }
 966
 967         return DRM_MODE_CONNECTOR_Unknown;
 968 }
 969
 970 struct drm_connector *
 971 nouveau_connector_create(struct drm_device *dev, int index)
 972 {
 973         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 974         struct nouveau_drm *drm = nouveau_drm(dev);
 975         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 976         struct nouveau_display *disp = nouveau_display(dev);
 977         struct nouveau_connector *nv_connector = NULL;
 978         struct drm_connector *connector;
 979         int type, ret = 0;
 980         bool dummy;
 981
 982         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 983                 nv_connector = nouveau_connector(connector);
 984                 if (nv_connector->index == index)
 985                         return connector;
 986         }
 987
 988         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
 989         if (!nv_connector)
 990                 return ERR_PTR(-ENOMEM);
 991
 992         connector = &nv_connector->base;
 993         INIT_WORK(&nv_connector->hpd_work, nouveau_connector_hotplug_work);
 994         nv_connector->index = index;
 995
 996         /* attempt to parse vbios connector type and hotplug gpio */
 997         nv_connector->dcb = olddcb_conn(dev, index);
 998         if (nv_connector->dcb) {
 999                 static const u8 hpd[16] = {
1000                         0xff, 0x07, 0x08, 0xff, 0xff, 0x51, 0x52, 0xff,
1001                         0xff, 0xff, 0xff, 0xff, 0xff, 0x5e, 0x5f, 0x60,
1002                 };
1003
1004                 u32 entry = ROM16(nv_connector->dcb[0]);
1005                 if (olddcb_conntab(dev)[3] >= 4)
1006                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1007
1008                 ret = gpio->find(gpio, 0, hpd[ffs((entry & 0x07033000) >> 12)],
1009                                  DCB_GPIO_UNUSED, &nv_connector->hpd);
1010                 nv_connector->hpd_func.func = nouveau_connector_hotplug;
1011                 if (ret)
1012                         nv_connector->hpd.func = DCB_GPIO_UNUSED;
1013
1014                 nv_connector->type = nv_connector->dcb[0];
1015                 if (drm_conntype_from_dcb(nv_connector->type) ==
1016                                           DRM_MODE_CONNECTOR_Unknown) {
1017                         NV_WARN(drm, "unknown connector type %02x\n",
1018                                 nv_connector->type);
1019                         nv_connector->type = DCB_CONNECTOR_NONE;
1020                 }
1021
1022                 /* Gigabyte NX85T */
1023                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1024                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1025                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1026                 }
1027
1028                 /* Gigabyte GV-NX86T512H */
1029                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1030                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1031                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1032                 }
1033         } else {
1034                 nv_connector->type = DCB_CONNECTOR_NONE;
1035                 nv_connector->hpd.func = DCB_GPIO_UNUSED;
1036         }
1037
1038         /* no vbios data, or an unknown dcb connector type - attempt to
1039          * figure out something suitable ourselves
1040          */
1041         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1042                 struct nouveau_drm *drm = nouveau_drm(dev);
1043                 struct dcb_table *dcbt = &drm->vbios.dcb;
1044                 u32 encoders = 0;
1045                 int i;
1046
1047                 for (i = 0; i < dcbt->entries; i++) {
1048                         if (dcbt->entry[i].connector == nv_connector->index)
1049                                 encoders |= (1 << dcbt->entry[i].type);
1050                 }
1051
1052                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1053                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1054                                 nv_connector->type = DCB_CONNECTOR_DP;
1055                         else
1056                                 nv_connector->type = DCB_CONNECTOR_eDP;
1057                 } else
1058                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1059                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1060                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1061                         else
1062                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1063                 } else
1064                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1065                         nv_connector->type = DCB_CONNECTOR_VGA;
1066                 } else
1067                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1068                         nv_connector->type = DCB_CONNECTOR_LVDS;
1069                 } else
1070                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1071                         nv_connector->type = DCB_CONNECTOR_TV_0;
1072                 }
1073         }
1074
1075         type = drm_conntype_from_dcb(nv_connector->type);
1076         if (type == DRM_MODE_CONNECTOR_LVDS) {
1077                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1078                 if (ret) {
1079                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1080                         kfree(nv_connector);
1081                         return ERR_PTR(ret);
1082                 }
1083
1084                 funcs = &nouveau_connector_funcs_lvds;
1085         } else {
1086                 funcs = &nouveau_connector_funcs;
1087         }
1088
1089         /* defaults, will get overridden in detect() */
1090         connector->interlace_allowed = false;
1091         connector->doublescan_allowed = false;
1092
1093         drm_connector_init(dev, connector, funcs, type);
1094         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1095
1096         /* Init DVI-I specific properties */
1097         if (nv_connector->type == DCB_CONNECTOR_DVI_I)
1098                 drm_object_attach_property(&connector->base, dev->mode_config.dvi_i_subconnector_property, 0);
1099
1100         /* Add overscan compensation options to digital outputs */
1101         if (disp->underscan_property &&
1102             (type == DRM_MODE_CONNECTOR_DVID ||
1103              type == DRM_MODE_CONNECTOR_DVII ||
1104              type == DRM_MODE_CONNECTOR_HDMIA ||
1105              type == DRM_MODE_CONNECTOR_DisplayPort)) {
1106                 drm_object_attach_property(&connector->base,
1107                                               disp->underscan_property,
1108                                               UNDERSCAN_OFF);
1109                 drm_object_attach_property(&connector->base,
1110                                               disp->underscan_hborder_property,
1111                                               0);
1112                 drm_object_attach_property(&connector->base,
1113                                               disp->underscan_vborder_property,
1114                                               0);
1115         }
1116
1117         /* Add hue and saturation options */
1118         if (disp->vibrant_hue_property)
1119                 drm_object_attach_property(&connector->base,
1120                                               disp->vibrant_hue_property,
1121                                               90);
1122         if (disp->color_vibrance_property)
1123                 drm_object_attach_property(&connector->base,
1124                                               disp->color_vibrance_property,
1125                                               150);
1126
1127         switch (nv_connector->type) {
1128         case DCB_CONNECTOR_VGA:
1129                 if (nv_device(drm->device)->card_type >= NV_50) {
1130                         drm_object_attach_property(&connector->base,
1131                                         dev->mode_config.scaling_mode_property,
1132                                         nv_connector->scaling_mode);
1133                 }
1134                 /* fall-through */
1135         case DCB_CONNECTOR_TV_0:
1136         case DCB_CONNECTOR_TV_1:
1137         case DCB_CONNECTOR_TV_3:
1138                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1139                 break;
1140         default:
1141                 nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1142
1143                 drm_object_attach_property(&connector->base,
1144                                 dev->mode_config.scaling_mode_property,
1145                                 nv_connector->scaling_mode);
1146                 if (disp->dithering_mode) {
1147                         nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1148                         drm_object_attach_property(&connector->base,
1149                                                 disp->dithering_mode,
1150                                                 nv_connector->dithering_mode);
1151                 }
1152                 if (disp->dithering_depth) {
1153                         nv_connector->dithering_depth = DITHERING_DEPTH_AUTO;
1154                         drm_object_attach_property(&connector->base,
1155                                                 disp->dithering_depth,
1156                                                 nv_connector->dithering_depth);
1157                 }
1158                 break;
1159         }
1160
1161         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1162         if (nv_connector->hpd.func != DCB_GPIO_UNUSED)
1163                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1164
1165         drm_sysfs_connector_add(connector);
1166         return connector;
1167 }