linux/drivers/gpu/drm/nouveau/nouveau_connector.c
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   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#include <linux/vga_switcheroo.h>
  31
  32#include <drm/drm_atomic_helper.h>
  33#include <drm/drm_edid.h>
  34#include <drm/drm_crtc_helper.h>
  35#include <drm/drm_probe_helper.h>
  36#include <drm/drm_atomic.h>
  37
  38#include "nouveau_reg.h"
  39#include "nouveau_drv.h"
  40#include "dispnv04/hw.h"
  41#include "dispnv50/disp.h"
  42#include "nouveau_acpi.h"
  43
  44#include "nouveau_display.h"
  45#include "nouveau_connector.h"
  46#include "nouveau_encoder.h"
  47#include "nouveau_crtc.h"
  48
  49#include <nvif/class.h>
  50#include <nvif/cl0046.h>
  51#include <nvif/event.h>
  52
  53struct drm_display_mode *
  54nouveau_conn_native_mode(struct drm_connector *connector)
  55{
  56        const struct drm_connector_helper_funcs *helper = connector->helper_private;
  57        struct nouveau_drm *drm = nouveau_drm(connector->dev);
  58        struct drm_device *dev = connector->dev;
  59        struct drm_display_mode *mode, *largest = NULL;
  60        int high_w = 0, high_h = 0, high_v = 0;
  61
  62        list_for_each_entry(mode, &connector->probed_modes, head) {
  63                if (helper->mode_valid(connector, mode) != MODE_OK ||
  64                    (mode->flags & DRM_MODE_FLAG_INTERLACE))
  65                        continue;
  66
  67                /* Use preferred mode if there is one.. */
  68                if (mode->type & DRM_MODE_TYPE_PREFERRED) {
  69                        NV_DEBUG(drm, "native mode from preferred\n");
  70                        return drm_mode_duplicate(dev, mode);
  71                }
  72
  73                /* Otherwise, take the resolution with the largest width, then
  74                 * height, then vertical refresh
  75                 */
  76                if (mode->hdisplay < high_w)
  77                        continue;
  78
  79                if (mode->hdisplay == high_w && mode->vdisplay < high_h)
  80                        continue;
  81
  82                if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
  83                    drm_mode_vrefresh(mode) < high_v)
  84                        continue;
  85
  86                high_w = mode->hdisplay;
  87                high_h = mode->vdisplay;
  88                high_v = drm_mode_vrefresh(mode);
  89                largest = mode;
  90        }
  91
  92        NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
  93                      high_w, high_h, high_v);
  94        return largest ? drm_mode_duplicate(dev, largest) : NULL;
  95}
  96
  97int
  98nouveau_conn_atomic_get_property(struct drm_connector *connector,
  99                                 const struct drm_connector_state *state,
 100                                 struct drm_property *property, u64 *val)
 101{
 102        struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 103        struct nouveau_display *disp = nouveau_display(connector->dev);
 104        struct drm_device *dev = connector->dev;
 105
 106        if (property == dev->mode_config.scaling_mode_property)
 107                *val = asyc->scaler.mode;
 108        else if (property == disp->underscan_property)
 109                *val = asyc->scaler.underscan.mode;
 110        else if (property == disp->underscan_hborder_property)
 111                *val = asyc->scaler.underscan.hborder;
 112        else if (property == disp->underscan_vborder_property)
 113                *val = asyc->scaler.underscan.vborder;
 114        else if (property == disp->dithering_mode)
 115                *val = asyc->dither.mode;
 116        else if (property == disp->dithering_depth)
 117                *val = asyc->dither.depth;
 118        else if (property == disp->vibrant_hue_property)
 119                *val = asyc->procamp.vibrant_hue;
 120        else if (property == disp->color_vibrance_property)
 121                *val = asyc->procamp.color_vibrance;
 122        else
 123                return -EINVAL;
 124
 125        return 0;
 126}
 127
 128int
 129nouveau_conn_atomic_set_property(struct drm_connector *connector,
 130                                 struct drm_connector_state *state,
 131                                 struct drm_property *property, u64 val)
 132{
 133        struct drm_device *dev = connector->dev;
 134        struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 135        struct nouveau_display *disp = nouveau_display(dev);
 136
 137        if (property == dev->mode_config.scaling_mode_property) {
 138                switch (val) {
 139                case DRM_MODE_SCALE_NONE:
 140                        /* We allow 'None' for EDID modes, even on a fixed
 141                         * panel (some exist with support for lower refresh
 142                         * rates, which people might want to use for power-
 143                         * saving purposes).
 144                         *
 145                         * Non-EDID modes will force the use of GPU scaling
 146                         * to the native mode regardless of this setting.
 147                         */
 148                        switch (connector->connector_type) {
 149                        case DRM_MODE_CONNECTOR_LVDS:
 150                        case DRM_MODE_CONNECTOR_eDP:
 151                                /* ... except prior to G80, where the code
 152                                 * doesn't support such things.
 153                                 */
 154                                if (disp->disp.object.oclass < NV50_DISP)
 155                                        return -EINVAL;
 156                                break;
 157                        default:
 158                                break;
 159                        }
 160                        break;
 161                case DRM_MODE_SCALE_FULLSCREEN:
 162                case DRM_MODE_SCALE_CENTER:
 163                case DRM_MODE_SCALE_ASPECT:
 164                        break;
 165                default:
 166                        return -EINVAL;
 167                }
 168
 169                if (asyc->scaler.mode != val) {
 170                        asyc->scaler.mode = val;
 171                        asyc->set.scaler = true;
 172                }
 173        } else
 174        if (property == disp->underscan_property) {
 175                if (asyc->scaler.underscan.mode != val) {
 176                        asyc->scaler.underscan.mode = val;
 177                        asyc->set.scaler = true;
 178                }
 179        } else
 180        if (property == disp->underscan_hborder_property) {
 181                if (asyc->scaler.underscan.hborder != val) {
 182                        asyc->scaler.underscan.hborder = val;
 183                        asyc->set.scaler = true;
 184                }
 185        } else
 186        if (property == disp->underscan_vborder_property) {
 187                if (asyc->scaler.underscan.vborder != val) {
 188                        asyc->scaler.underscan.vborder = val;
 189                        asyc->set.scaler = true;
 190                }
 191        } else
 192        if (property == disp->dithering_mode) {
 193                if (asyc->dither.mode != val) {
 194                        asyc->dither.mode = val;
 195                        asyc->set.dither = true;
 196                }
 197        } else
 198        if (property == disp->dithering_depth) {
 199                if (asyc->dither.mode != val) {
 200                        asyc->dither.depth = val;
 201                        asyc->set.dither = true;
 202                }
 203        } else
 204        if (property == disp->vibrant_hue_property) {
 205                if (asyc->procamp.vibrant_hue != val) {
 206                        asyc->procamp.vibrant_hue = val;
 207                        asyc->set.procamp = true;
 208                }
 209        } else
 210        if (property == disp->color_vibrance_property) {
 211                if (asyc->procamp.color_vibrance != val) {
 212                        asyc->procamp.color_vibrance = val;
 213                        asyc->set.procamp = true;
 214                }
 215        } else {
 216                return -EINVAL;
 217        }
 218
 219        return 0;
 220}
 221
 222void
 223nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 224                                  struct drm_connector_state *state)
 225{
 226        struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 227        __drm_atomic_helper_connector_destroy_state(&asyc->state);
 228        kfree(asyc);
 229}
 230
 231struct drm_connector_state *
 232nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 233{
 234        struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 235        struct nouveau_conn_atom *asyc;
 236        if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 237                return NULL;
 238        __drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 239        asyc->dither = armc->dither;
 240        asyc->scaler = armc->scaler;
 241        asyc->procamp = armc->procamp;
 242        asyc->set.mask = 0;
 243        return &asyc->state;
 244}
 245
 246void
 247nouveau_conn_reset(struct drm_connector *connector)
 248{
 249        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 250        struct nouveau_conn_atom *asyc;
 251
 252        if (drm_drv_uses_atomic_modeset(connector->dev)) {
 253                if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 254                        return;
 255
 256                if (connector->state)
 257                        nouveau_conn_atomic_destroy_state(connector,
 258                                                          connector->state);
 259
 260                __drm_atomic_helper_connector_reset(connector, &asyc->state);
 261        } else {
 262                asyc = &nv_connector->properties_state;
 263        }
 264
 265        asyc->dither.mode = DITHERING_MODE_AUTO;
 266        asyc->dither.depth = DITHERING_DEPTH_AUTO;
 267        asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 268        asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 269        asyc->procamp.color_vibrance = 150;
 270        asyc->procamp.vibrant_hue = 90;
 271
 272        if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 273                switch (connector->connector_type) {
 274                case DRM_MODE_CONNECTOR_LVDS:
 275                        /* See note in nouveau_conn_atomic_set_property(). */
 276                        asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 277                        break;
 278                default:
 279                        break;
 280                }
 281        }
 282}
 283
 284void
 285nouveau_conn_attach_properties(struct drm_connector *connector)
 286{
 287        struct drm_device *dev = connector->dev;
 288        struct nouveau_display *disp = nouveau_display(dev);
 289        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 290        struct nouveau_conn_atom *armc;
 291
 292        if (drm_drv_uses_atomic_modeset(connector->dev))
 293                armc = nouveau_conn_atom(connector->state);
 294        else
 295                armc = &nv_connector->properties_state;
 296
 297        /* Init DVI-I specific properties. */
 298        if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 299                drm_object_attach_property(&connector->base, dev->mode_config.
 300                                           dvi_i_subconnector_property, 0);
 301
 302        /* Add overscan compensation options to digital outputs. */
 303        if (disp->underscan_property &&
 304            (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 305             connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 306             connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 307             connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 308                drm_object_attach_property(&connector->base,
 309                                           disp->underscan_property,
 310                                           UNDERSCAN_OFF);
 311                drm_object_attach_property(&connector->base,
 312                                           disp->underscan_hborder_property, 0);
 313                drm_object_attach_property(&connector->base,
 314                                           disp->underscan_vborder_property, 0);
 315        }
 316
 317        /* Add hue and saturation options. */
 318        if (disp->vibrant_hue_property)
 319                drm_object_attach_property(&connector->base,
 320                                           disp->vibrant_hue_property,
 321                                           armc->procamp.vibrant_hue);
 322        if (disp->color_vibrance_property)
 323                drm_object_attach_property(&connector->base,
 324                                           disp->color_vibrance_property,
 325                                           armc->procamp.color_vibrance);
 326
 327        /* Scaling mode property. */
 328        switch (connector->connector_type) {
 329        case DRM_MODE_CONNECTOR_TV:
 330                break;
 331        case DRM_MODE_CONNECTOR_VGA:
 332                if (disp->disp.object.oclass < NV50_DISP)
 333                        break; /* Can only scale on DFPs. */
 334                fallthrough;
 335        default:
 336                drm_object_attach_property(&connector->base, dev->mode_config.
 337                                           scaling_mode_property,
 338                                           armc->scaler.mode);
 339                break;
 340        }
 341
 342        /* Dithering properties. */
 343        switch (connector->connector_type) {
 344        case DRM_MODE_CONNECTOR_TV:
 345        case DRM_MODE_CONNECTOR_VGA:
 346                break;
 347        default:
 348                if (disp->dithering_mode) {
 349                        drm_object_attach_property(&connector->base,
 350                                                   disp->dithering_mode,
 351                                                   armc->dither.mode);
 352                }
 353                if (disp->dithering_depth) {
 354                        drm_object_attach_property(&connector->base,
 355                                                   disp->dithering_depth,
 356                                                   armc->dither.depth);
 357                }
 358                break;
 359        }
 360}
 361
 362MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 363int nouveau_tv_disable = 0;
 364module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 365
 366MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 367int nouveau_ignorelid = 0;
 368module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 369
 370MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 371int nouveau_duallink = 1;
 372module_param_named(duallink, nouveau_duallink, int, 0400);
 373
 374MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 375int nouveau_hdmimhz = 0;
 376module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 377
 378struct nouveau_encoder *
 379find_encoder(struct drm_connector *connector, int type)
 380{
 381        struct nouveau_encoder *nv_encoder;
 382        struct drm_encoder *enc;
 383
 384        drm_connector_for_each_possible_encoder(connector, enc) {
 385                nv_encoder = nouveau_encoder(enc);
 386
 387                if (type == DCB_OUTPUT_ANY ||
 388                    (nv_encoder->dcb && nv_encoder->dcb->type == type))
 389                        return nv_encoder;
 390        }
 391
 392        return NULL;
 393}
 394
 395static void
 396nouveau_connector_destroy(struct drm_connector *connector)
 397{
 398        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 399        nvif_notify_dtor(&nv_connector->hpd);
 400        kfree(nv_connector->edid);
 401        drm_connector_unregister(connector);
 402        drm_connector_cleanup(connector);
 403        if (nv_connector->aux.transfer) {
 404                drm_dp_cec_unregister_connector(&nv_connector->aux);
 405                kfree(nv_connector->aux.name);
 406        }
 407        kfree(connector);
 408}
 409
 410static struct nouveau_encoder *
 411nouveau_connector_ddc_detect(struct drm_connector *connector)
 412{
 413        struct drm_device *dev = connector->dev;
 414        struct pci_dev *pdev = to_pci_dev(dev->dev);
 415        struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 416        struct drm_encoder *encoder;
 417        int ret;
 418        bool switcheroo_ddc = false;
 419
 420        drm_connector_for_each_possible_encoder(connector, encoder) {
 421                nv_encoder = nouveau_encoder(encoder);
 422
 423                switch (nv_encoder->dcb->type) {
 424                case DCB_OUTPUT_DP:
 425                        ret = nouveau_dp_detect(nouveau_connector(connector),
 426                                                nv_encoder);
 427                        if (ret == NOUVEAU_DP_MST)
 428                                return NULL;
 429                        else if (ret == NOUVEAU_DP_SST)
 430                                found = nv_encoder;
 431
 432                        break;
 433                case DCB_OUTPUT_LVDS:
 434                        switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 435                                            VGA_SWITCHEROO_CAN_SWITCH_DDC);
 436                        fallthrough;
 437                default:
 438                        if (!nv_encoder->i2c)
 439                                break;
 440
 441                        if (switcheroo_ddc)
 442                                vga_switcheroo_lock_ddc(pdev);
 443                        if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 444                                found = nv_encoder;
 445                        if (switcheroo_ddc)
 446                                vga_switcheroo_unlock_ddc(pdev);
 447
 448                        break;
 449                }
 450                if (found)
 451                        break;
 452        }
 453
 454        return found;
 455}
 456
 457static struct nouveau_encoder *
 458nouveau_connector_of_detect(struct drm_connector *connector)
 459{
 460#ifdef __powerpc__
 461        struct drm_device *dev = connector->dev;
 462        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 463        struct nouveau_encoder *nv_encoder;
 464        struct pci_dev *pdev = to_pci_dev(dev->dev);
 465        struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
 466
 467        if (!dn ||
 468            !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 469              (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 470                return NULL;
 471
 472        for_each_child_of_node(dn, cn) {
 473                const char *name = of_get_property(cn, "name", NULL);
 474                const void *edid = of_get_property(cn, "EDID", NULL);
 475                int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 476
 477                if (nv_encoder->dcb->i2c_index == idx && edid) {
 478                        nv_connector->edid =
 479                                kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 480                        of_node_put(cn);
 481                        return nv_encoder;
 482                }
 483        }
 484#endif
 485        return NULL;
 486}
 487
 488static void
 489nouveau_connector_set_encoder(struct drm_connector *connector,
 490                              struct nouveau_encoder *nv_encoder)
 491{
 492        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 493        struct nouveau_drm *drm = nouveau_drm(connector->dev);
 494        struct drm_device *dev = connector->dev;
 495        struct pci_dev *pdev = to_pci_dev(dev->dev);
 496
 497        if (nv_connector->detected_encoder == nv_encoder)
 498                return;
 499        nv_connector->detected_encoder = nv_encoder;
 500
 501        if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 502                if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 503                        connector->interlace_allowed =
 504                                nv_encoder->caps.dp_interlace;
 505                else
 506                        connector->interlace_allowed = true;
 507                connector->doublescan_allowed = true;
 508        } else
 509        if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 510            nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 511                connector->doublescan_allowed = false;
 512                connector->interlace_allowed = false;
 513        } else {
 514                connector->doublescan_allowed = true;
 515                if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 516                    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 517                     (pdev->device & 0x0ff0) != 0x0100 &&
 518                     (pdev->device & 0x0ff0) != 0x0150))
 519                        /* HW is broken */
 520                        connector->interlace_allowed = false;
 521                else
 522                        connector->interlace_allowed = true;
 523        }
 524
 525        if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 526                drm_object_property_set_value(&connector->base,
 527                        dev->mode_config.dvi_i_subconnector_property,
 528                        nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 529                        DRM_MODE_SUBCONNECTOR_DVID :
 530                        DRM_MODE_SUBCONNECTOR_DVIA);
 531        }
 532}
 533
 534static void
 535nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
 536                           struct edid *edid)
 537{
 538        if (nv_connector->edid != edid) {
 539                struct edid *old_edid = nv_connector->edid;
 540
 541                drm_connector_update_edid_property(&nv_connector->base, edid);
 542                kfree(old_edid);
 543                nv_connector->edid = edid;
 544        }
 545}
 546
 547static enum drm_connector_status
 548nouveau_connector_detect(struct drm_connector *connector, bool force)
 549{
 550        struct drm_device *dev = connector->dev;
 551        struct nouveau_drm *drm = nouveau_drm(dev);
 552        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 553        struct nouveau_encoder *nv_encoder = NULL;
 554        struct nouveau_encoder *nv_partner;
 555        struct i2c_adapter *i2c;
 556        int type;
 557        int ret;
 558        enum drm_connector_status conn_status = connector_status_disconnected;
 559
 560        /* Outputs are only polled while runtime active, so resuming the
 561         * device here is unnecessary (and would deadlock upon runtime suspend
 562         * because it waits for polling to finish). We do however, want to
 563         * prevent the autosuspend timer from elapsing during this operation
 564         * if possible.
 565         */
 566        if (drm_kms_helper_is_poll_worker()) {
 567                pm_runtime_get_noresume(dev->dev);
 568        } else {
 569                ret = pm_runtime_get_sync(dev->dev);
 570                if (ret < 0 && ret != -EACCES) {
 571                        pm_runtime_put_autosuspend(dev->dev);
 572                        nouveau_connector_set_edid(nv_connector, NULL);
 573                        return conn_status;
 574                }
 575        }
 576
 577        nv_encoder = nouveau_connector_ddc_detect(connector);
 578        if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 579                struct edid *new_edid;
 580
 581                if ((vga_switcheroo_handler_flags() &
 582                     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 583                    nv_connector->type == DCB_CONNECTOR_LVDS)
 584                        new_edid = drm_get_edid_switcheroo(connector, i2c);
 585                else
 586                        new_edid = drm_get_edid(connector, i2c);
 587
 588                nouveau_connector_set_edid(nv_connector, new_edid);
 589                if (!nv_connector->edid) {
 590                        NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 591                                 connector->name);
 592                        goto detect_analog;
 593                }
 594
 595                /* Override encoder type for DVI-I based on whether EDID
 596                 * says the display is digital or analog, both use the
 597                 * same i2c channel so the value returned from ddc_detect
 598                 * isn't necessarily correct.
 599                 */
 600                nv_partner = NULL;
 601                if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 602                        nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 603                if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 604                        nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 605
 606                if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 607                                    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 608                                   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 609                                    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 610                        if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 611                                type = DCB_OUTPUT_TMDS;
 612                        else
 613                                type = DCB_OUTPUT_ANALOG;
 614
 615                        nv_encoder = find_encoder(connector, type);
 616                }
 617
 618                nouveau_connector_set_encoder(connector, nv_encoder);
 619                conn_status = connector_status_connected;
 620                drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 621                goto out;
 622        } else {
 623                nouveau_connector_set_edid(nv_connector, NULL);
 624        }
 625
 626        nv_encoder = nouveau_connector_of_detect(connector);
 627        if (nv_encoder) {
 628                nouveau_connector_set_encoder(connector, nv_encoder);
 629                conn_status = connector_status_connected;
 630                goto out;
 631        }
 632
 633detect_analog:
 634        nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 635        if (!nv_encoder && !nouveau_tv_disable)
 636                nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 637        if (nv_encoder && force) {
 638                struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 639                const struct drm_encoder_helper_funcs *helper =
 640                                                encoder->helper_private;
 641
 642                if (helper->detect(encoder, connector) ==
 643                                                connector_status_connected) {
 644                        nouveau_connector_set_encoder(connector, nv_encoder);
 645                        conn_status = connector_status_connected;
 646                        goto out;
 647                }
 648        }
 649
 650 out:
 651        if (!nv_connector->edid)
 652                drm_dp_cec_unset_edid(&nv_connector->aux);
 653
 654        pm_runtime_mark_last_busy(dev->dev);
 655        pm_runtime_put_autosuspend(dev->dev);
 656
 657        return conn_status;
 658}
 659
 660static enum drm_connector_status
 661nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 662{
 663        struct drm_device *dev = connector->dev;
 664        struct nouveau_drm *drm = nouveau_drm(dev);
 665        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 666        struct nouveau_encoder *nv_encoder = NULL;
 667        struct edid *edid = NULL;
 668        enum drm_connector_status status = connector_status_disconnected;
 669
 670        nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 671        if (!nv_encoder)
 672                goto out;
 673
 674        /* Try retrieving EDID via DDC */
 675        if (!drm->vbios.fp_no_ddc) {
 676                status = nouveau_connector_detect(connector, force);
 677                if (status == connector_status_connected) {
 678                        edid = nv_connector->edid;
 679                        goto out;
 680                }
 681        }
 682
 683        /* On some laptops (Sony, i'm looking at you) there appears to
 684         * be no direct way of accessing the panel's EDID.  The only
 685         * option available to us appears to be to ask ACPI for help..
 686         *
 687         * It's important this check's before trying straps, one of the
 688         * said manufacturer's laptops are configured in such a way
 689         * the nouveau decides an entry in the VBIOS FP mode table is
 690         * valid - it's not (rh#613284)
 691         */
 692        if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 693                edid = nouveau_acpi_edid(dev, connector);
 694                if (edid) {
 695                        status = connector_status_connected;
 696                        goto out;
 697                }
 698        }
 699
 700        /* If no EDID found above, and the VBIOS indicates a hardcoded
 701         * modeline is avalilable for the panel, set it as the panel's
 702         * native mode and exit.
 703         */
 704        if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 705            nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 706                status = connector_status_connected;
 707                goto out;
 708        }
 709
 710        /* Still nothing, some VBIOS images have a hardcoded EDID block
 711         * stored for the panel stored in them.
 712         */
 713        if (!drm->vbios.fp_no_ddc) {
 714                edid = (struct edid *)nouveau_bios_embedded_edid(dev);
 715                if (edid) {
 716                        edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 717                        if (edid)
 718                                status = connector_status_connected;
 719                }
 720        }
 721
 722out:
 723#if defined(CONFIG_ACPI_BUTTON) || \
 724        (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 725        if (status == connector_status_connected &&
 726            !nouveau_ignorelid && !acpi_lid_open())
 727                status = connector_status_unknown;
 728#endif
 729
 730        nouveau_connector_set_edid(nv_connector, edid);
 731        nouveau_connector_set_encoder(connector, nv_encoder);
 732        return status;
 733}
 734
 735static void
 736nouveau_connector_force(struct drm_connector *connector)
 737{
 738        struct nouveau_drm *drm = nouveau_drm(connector->dev);
 739        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 740        struct nouveau_encoder *nv_encoder;
 741        int type;
 742
 743        if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 744                if (connector->force == DRM_FORCE_ON_DIGITAL)
 745                        type = DCB_OUTPUT_TMDS;
 746                else
 747                        type = DCB_OUTPUT_ANALOG;
 748        } else
 749                type = DCB_OUTPUT_ANY;
 750
 751        nv_encoder = find_encoder(connector, type);
 752        if (!nv_encoder) {
 753                NV_ERROR(drm, "can't find encoder to force %s on!\n",
 754                         connector->name);
 755                connector->status = connector_status_disconnected;
 756                return;
 757        }
 758
 759        nouveau_connector_set_encoder(connector, nv_encoder);
 760}
 761
 762static int
 763nouveau_connector_set_property(struct drm_connector *connector,
 764                               struct drm_property *property, uint64_t value)
 765{
 766        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 767        struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 768        struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
 769        struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 770        int ret;
 771
 772        ret = connector->funcs->atomic_set_property(&nv_connector->base,
 773                                                    &asyc->state,
 774                                                    property, value);
 775        if (ret) {
 776                if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 777                        return get_slave_funcs(encoder)->set_property(
 778                                encoder, connector, property, value);
 779                return ret;
 780        }
 781
 782        nv_connector->scaling_mode = asyc->scaler.mode;
 783        nv_connector->dithering_mode = asyc->dither.mode;
 784
 785        if (connector->encoder && connector->encoder->crtc) {
 786                ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 787                                              &connector->encoder->crtc->mode,
 788                                               connector->encoder->crtc->x,
 789                                               connector->encoder->crtc->y,
 790                                               NULL);
 791                if (!ret)
 792                        return -EINVAL;
 793        }
 794
 795        return 0;
 796}
 797
 798struct moderec {
 799        int hdisplay;
 800        int vdisplay;
 801};
 802
 803static struct moderec scaler_modes[] = {
 804        { 1920, 1200 },
 805        { 1920, 1080 },
 806        { 1680, 1050 },
 807        { 1600, 1200 },
 808        { 1400, 1050 },
 809        { 1280, 1024 },
 810        { 1280, 960 },
 811        { 1152, 864 },
 812        { 1024, 768 },
 813        { 800, 600 },
 814        { 720, 400 },
 815        { 640, 480 },
 816        { 640, 400 },
 817        { 640, 350 },
 818        {}
 819};
 820
 821static int
 822nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 823{
 824        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 825        struct drm_display_mode *native = nv_connector->native_mode, *m;
 826        struct drm_device *dev = connector->dev;
 827        struct moderec *mode = &scaler_modes[0];
 828        int modes = 0;
 829
 830        if (!native)
 831                return 0;
 832
 833        while (mode->hdisplay) {
 834                if (mode->hdisplay <= native->hdisplay &&
 835                    mode->vdisplay <= native->vdisplay &&
 836                    (mode->hdisplay != native->hdisplay ||
 837                     mode->vdisplay != native->vdisplay)) {
 838                        m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 839                                         drm_mode_vrefresh(native), false,
 840                                         false, false);
 841                        if (!m)
 842                                continue;
 843
 844                        drm_mode_probed_add(connector, m);
 845                        modes++;
 846                }
 847
 848                mode++;
 849        }
 850
 851        return modes;
 852}
 853
 854static void
 855nouveau_connector_detect_depth(struct drm_connector *connector)
 856{
 857        struct nouveau_drm *drm = nouveau_drm(connector->dev);
 858        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 859        struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 860        struct nvbios *bios = &drm->vbios;
 861        struct drm_display_mode *mode = nv_connector->native_mode;
 862        bool duallink;
 863
 864        /* if the edid is feeling nice enough to provide this info, use it */
 865        if (nv_connector->edid && connector->display_info.bpc)
 866                return;
 867
 868        /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 869        if (nv_connector->type == DCB_CONNECTOR_eDP) {
 870                connector->display_info.bpc = 6;
 871                return;
 872        }
 873
 874        /* we're out of options unless we're LVDS, default to 8bpc */
 875        if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 876                connector->display_info.bpc = 8;
 877                return;
 878        }
 879
 880        connector->display_info.bpc = 6;
 881
 882        /* LVDS: panel straps */
 883        if (bios->fp_no_ddc) {
 884                if (bios->fp.if_is_24bit)
 885                        connector->display_info.bpc = 8;
 886                return;
 887        }
 888
 889        /* LVDS: DDC panel, need to first determine the number of links to
 890         * know which if_is_24bit flag to check...
 891         */
 892        if (nv_connector->edid &&
 893            nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 894                duallink = ((u8 *)nv_connector->edid)[121] == 2;
 895        else
 896                duallink = mode->clock >= bios->fp.duallink_transition_clk;
 897
 898        if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 899            ( duallink && (bios->fp.strapless_is_24bit & 2)))
 900                connector->display_info.bpc = 8;
 901}
 902
 903static int
 904nouveau_connector_late_register(struct drm_connector *connector)
 905{
 906        int ret;
 907
 908        ret = nouveau_backlight_init(connector);
 909        if (ret)
 910                return ret;
 911
 912        if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 913            connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
 914                ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
 915                if (ret)
 916                        goto backlight_fini;
 917        }
 918
 919        return 0;
 920backlight_fini:
 921        nouveau_backlight_fini(connector);
 922        return ret;
 923}
 924
 925static void
 926nouveau_connector_early_unregister(struct drm_connector *connector)
 927{
 928        if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 929            connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
 930                drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
 931
 932        nouveau_backlight_fini(connector);
 933}
 934
 935static int
 936nouveau_connector_get_modes(struct drm_connector *connector)
 937{
 938        struct drm_device *dev = connector->dev;
 939        struct nouveau_drm *drm = nouveau_drm(dev);
 940        struct nouveau_connector *nv_connector = nouveau_connector(connector);
 941        struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 942        struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 943        int ret = 0;
 944
 945        /* destroy the native mode, the attached monitor could have changed.
 946         */
 947        if (nv_connector->native_mode) {
 948                drm_mode_destroy(dev, nv_connector->native_mode);
 949                nv_connector->native_mode = NULL;
 950        }
 951
 952        if (nv_connector->edid)
 953                ret = drm_add_edid_modes(connector, nv_connector->edid);
 954        else
 955        if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 956            (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 957             drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 958                struct drm_display_mode mode;
 959
 960                nouveau_bios_fp_mode(dev, &mode);
 961                nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 962        }
 963
 964        /* Determine display colour depth for everything except LVDS now,
 965         * DP requires this before mode_valid() is called.
 966         */
 967        if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 968                nouveau_connector_detect_depth(connector);
 969
 970        /* Find the native mode if this is a digital panel, if we didn't
 971         * find any modes through DDC previously add the native mode to
 972         * the list of modes.
 973         */
 974        if (!nv_connector->native_mode)
 975                nv_connector->native_mode = nouveau_conn_native_mode(connector);
 976        if (ret == 0 && nv_connector->native_mode) {
 977                struct drm_display_mode *mode;
 978
 979                mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 980                drm_mode_probed_add(connector, mode);
 981                ret = 1;
 982        }
 983
 984        /* Determine LVDS colour depth, must happen after determining
 985         * "native" mode as some VBIOS tables require us to use the
 986         * pixel clock as part of the lookup...
 987         */
 988        if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 989                nouveau_connector_detect_depth(connector);
 990
 991        if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 992                ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 993
 994        if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 995            nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 996            nv_connector->type == DCB_CONNECTOR_eDP)
 997                ret += nouveau_connector_scaler_modes_add(connector);
 998
 999        return ret;
1000}
1001
1002static unsigned
1003get_tmds_link_bandwidth(struct drm_connector *connector)
1004{
1005        struct nouveau_connector *nv_connector = nouveau_connector(connector);
1006        struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1007        struct nouveau_drm *drm = nouveau_drm(connector->dev);
1008        struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1009        struct drm_display_info *info = NULL;
1010        unsigned duallink_scale =
1011                nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1012
1013        if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1014                info = &nv_connector->base.display_info;
1015                duallink_scale = 1;
1016        }
1017
1018        if (info) {
1019                if (nouveau_hdmimhz > 0)
1020                        return nouveau_hdmimhz * 1000;
1021                /* Note: these limits are conservative, some Fermi's
1022                 * can do 297 MHz. Unclear how this can be determined.
1023                 */
1024                if (drm->client.device.info.chipset >= 0x120) {
1025                        const int max_tmds_clock =
1026                                info->hdmi.scdc.scrambling.supported ?
1027                                594000 : 340000;
1028                        return info->max_tmds_clock ?
1029                                min(info->max_tmds_clock, max_tmds_clock) :
1030                                max_tmds_clock;
1031                }
1032                if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1033                        return 297000;
1034                if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1035                        return 225000;
1036        }
1037
1038        if (dcb->location != DCB_LOC_ON_CHIP ||
1039            drm->client.device.info.chipset >= 0x46)
1040                return 165000 * duallink_scale;
1041        else if (drm->client.device.info.chipset >= 0x40)
1042                return 155000 * duallink_scale;
1043        else if (drm->client.device.info.chipset >= 0x18)
1044                return 135000 * duallink_scale;
1045        else
1046                return 112000 * duallink_scale;
1047}
1048
1049static enum drm_mode_status
1050nouveau_connector_mode_valid(struct drm_connector *connector,
1051                             struct drm_display_mode *mode)
1052{
1053        struct nouveau_connector *nv_connector = nouveau_connector(connector);
1054        struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1055        struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1056        unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1057
1058        switch (nv_encoder->dcb->type) {
1059        case DCB_OUTPUT_LVDS:
1060                if (nv_connector->native_mode &&
1061                    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1062                     mode->vdisplay > nv_connector->native_mode->vdisplay))
1063                        return MODE_PANEL;
1064
1065                min_clock = 0;
1066                max_clock = 400000;
1067                break;
1068        case DCB_OUTPUT_TMDS:
1069                max_clock = get_tmds_link_bandwidth(connector);
1070                break;
1071        case DCB_OUTPUT_ANALOG:
1072                max_clock = nv_encoder->dcb->crtconf.maxfreq;
1073                if (!max_clock)
1074                        max_clock = 350000;
1075                break;
1076        case DCB_OUTPUT_TV:
1077                return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1078        case DCB_OUTPUT_DP:
1079                return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1080        default:
1081                BUG();
1082                return MODE_BAD;
1083        }
1084
1085        if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1086                clock *= 2;
1087
1088        if (clock < min_clock)
1089                return MODE_CLOCK_LOW;
1090        if (clock > max_clock)
1091                return MODE_CLOCK_HIGH;
1092
1093        return MODE_OK;
1094}
1095
1096static struct drm_encoder *
1097nouveau_connector_best_encoder(struct drm_connector *connector)
1098{
1099        struct nouveau_connector *nv_connector = nouveau_connector(connector);
1100
1101        if (nv_connector->detected_encoder)
1102                return to_drm_encoder(nv_connector->detected_encoder);
1103
1104        return NULL;
1105}
1106
1107static const struct drm_connector_helper_funcs
1108nouveau_connector_helper_funcs = {
1109        .get_modes = nouveau_connector_get_modes,
1110        .mode_valid = nouveau_connector_mode_valid,
1111        .best_encoder = nouveau_connector_best_encoder,
1112};
1113
1114static const struct drm_connector_funcs
1115nouveau_connector_funcs = {
1116        .dpms = drm_helper_connector_dpms,
1117        .reset = nouveau_conn_reset,
1118        .detect = nouveau_connector_detect,
1119        .force = nouveau_connector_force,
1120        .fill_modes = drm_helper_probe_single_connector_modes,
1121        .set_property = nouveau_connector_set_property,
1122        .destroy = nouveau_connector_destroy,
1123        .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1124        .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1125        .atomic_set_property = nouveau_conn_atomic_set_property,
1126        .atomic_get_property = nouveau_conn_atomic_get_property,
1127        .late_register = nouveau_connector_late_register,
1128        .early_unregister = nouveau_connector_early_unregister,
1129};
1130
1131static const struct drm_connector_funcs
1132nouveau_connector_funcs_lvds = {
1133        .dpms = drm_helper_connector_dpms,
1134        .reset = nouveau_conn_reset,
1135        .detect = nouveau_connector_detect_lvds,
1136        .force = nouveau_connector_force,
1137        .fill_modes = drm_helper_probe_single_connector_modes,
1138        .set_property = nouveau_connector_set_property,
1139        .destroy = nouveau_connector_destroy,
1140        .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1141        .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1142        .atomic_set_property = nouveau_conn_atomic_set_property,
1143        .atomic_get_property = nouveau_conn_atomic_get_property,
1144        .late_register = nouveau_connector_late_register,
1145        .early_unregister = nouveau_connector_early_unregister,
1146};
1147
1148void
1149nouveau_connector_hpd(struct drm_connector *connector)
1150{
1151        struct nouveau_drm *drm = nouveau_drm(connector->dev);
1152        u32 mask = drm_connector_mask(connector);
1153
1154        mutex_lock(&drm->hpd_lock);
1155        if (!(drm->hpd_pending & mask)) {
1156                drm->hpd_pending |= mask;
1157                schedule_work(&drm->hpd_work);
1158        }
1159        mutex_unlock(&drm->hpd_lock);
1160}
1161
1162static int
1163nouveau_connector_hotplug(struct nvif_notify *notify)
1164{
1165        struct nouveau_connector *nv_connector =
1166                container_of(notify, typeof(*nv_connector), hpd);
1167        struct drm_connector *connector = &nv_connector->base;
1168        struct drm_device *dev = connector->dev;
1169        struct nouveau_drm *drm = nouveau_drm(dev);
1170        const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1171        bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1172
1173        if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1174                nouveau_dp_irq(drm, nv_connector);
1175                return NVIF_NOTIFY_KEEP;
1176        }
1177
1178        NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1179        nouveau_connector_hpd(connector);
1180
1181        return NVIF_NOTIFY_KEEP;
1182}
1183
1184static ssize_t
1185nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1186{
1187        struct nouveau_connector *nv_connector =
1188                container_of(obj, typeof(*nv_connector), aux);
1189        struct nouveau_encoder *nv_encoder;
1190        struct nvkm_i2c_aux *aux;
1191        u8 size = msg->size;
1192        int ret;
1193
1194        nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1195        if (!nv_encoder || !(aux = nv_encoder->aux))
1196                return -ENODEV;
1197        if (WARN_ON(msg->size > 16))
1198                return -E2BIG;
1199
1200        ret = nvkm_i2c_aux_acquire(aux);
1201        if (ret)
1202                return ret;
1203
1204        ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1205                                msg->buffer, &size);
1206        nvkm_i2c_aux_release(aux);
1207        if (ret >= 0) {
1208                msg->reply = ret;
1209                return size;
1210        }
1211
1212        return ret;
1213}
1214
1215static int
1216drm_conntype_from_dcb(enum dcb_connector_type dcb)
1217{
1218        switch (dcb) {
1219        case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1220        case DCB_CONNECTOR_TV_0     :
1221        case DCB_CONNECTOR_TV_1     :
1222        case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1223        case DCB_CONNECTOR_DMS59_0  :
1224        case DCB_CONNECTOR_DMS59_1  :
1225        case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1226        case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1227        case DCB_CONNECTOR_LVDS     :
1228        case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1229        case DCB_CONNECTOR_DMS59_DP0:
1230        case DCB_CONNECTOR_DMS59_DP1:
1231        case DCB_CONNECTOR_DP       :
1232        case DCB_CONNECTOR_mDP      :
1233        case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1234        case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1235        case DCB_CONNECTOR_HDMI_0   :
1236        case DCB_CONNECTOR_HDMI_1   :
1237        case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1238        case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1239        default:
1240                break;
1241        }
1242
1243        return DRM_MODE_CONNECTOR_Unknown;
1244}
1245
1246struct drm_connector *
1247nouveau_connector_create(struct drm_device *dev,
1248                         const struct dcb_output *dcbe)
1249{
1250        const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1251        struct nouveau_drm *drm = nouveau_drm(dev);
1252        struct nouveau_display *disp = nouveau_display(dev);
1253        struct nouveau_connector *nv_connector = NULL;
1254        struct drm_connector *connector;
1255        struct drm_connector_list_iter conn_iter;
1256        char aux_name[48] = {0};
1257        int index = dcbe->connector;
1258        int type, ret = 0;
1259        bool dummy;
1260
1261        drm_connector_list_iter_begin(dev, &conn_iter);
1262        nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1263                nv_connector = nouveau_connector(connector);
1264                if (nv_connector->index == index) {
1265                        drm_connector_list_iter_end(&conn_iter);
1266                        return connector;
1267                }
1268        }
1269        drm_connector_list_iter_end(&conn_iter);
1270
1271        nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1272        if (!nv_connector)
1273                return ERR_PTR(-ENOMEM);
1274
1275        connector = &nv_connector->base;
1276        nv_connector->index = index;
1277
1278        /* attempt to parse vbios connector type and hotplug gpio */
1279        nv_connector->dcb = olddcb_conn(dev, index);
1280        if (nv_connector->dcb) {
1281                u32 entry = ROM16(nv_connector->dcb[0]);
1282                if (olddcb_conntab(dev)[3] >= 4)
1283                        entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1284
1285                nv_connector->type = nv_connector->dcb[0];
1286                if (drm_conntype_from_dcb(nv_connector->type) ==
1287                                          DRM_MODE_CONNECTOR_Unknown) {
1288                        NV_WARN(drm, "unknown connector type %02x\n",
1289                                nv_connector->type);
1290                        nv_connector->type = DCB_CONNECTOR_NONE;
1291                }
1292
1293                /* Gigabyte NX85T */
1294                if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1295                        if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1296                                nv_connector->type = DCB_CONNECTOR_DVI_I;
1297                }
1298
1299                /* Gigabyte GV-NX86T512H */
1300                if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1301                        if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1302                                nv_connector->type = DCB_CONNECTOR_DVI_I;
1303                }
1304        } else {
1305                nv_connector->type = DCB_CONNECTOR_NONE;
1306        }
1307
1308        /* no vbios data, or an unknown dcb connector type - attempt to
1309         * figure out something suitable ourselves
1310         */
1311        if (nv_connector->type == DCB_CONNECTOR_NONE) {
1312                struct nouveau_drm *drm = nouveau_drm(dev);
1313                struct dcb_table *dcbt = &drm->vbios.dcb;
1314                u32 encoders = 0;
1315                int i;
1316
1317                for (i = 0; i < dcbt->entries; i++) {
1318                        if (dcbt->entry[i].connector == nv_connector->index)
1319                                encoders |= (1 << dcbt->entry[i].type);
1320                }
1321
1322                if (encoders & (1 << DCB_OUTPUT_DP)) {
1323                        if (encoders & (1 << DCB_OUTPUT_TMDS))
1324                                nv_connector->type = DCB_CONNECTOR_DP;
1325                        else
1326                                nv_connector->type = DCB_CONNECTOR_eDP;
1327                } else
1328                if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1329                        if (encoders & (1 << DCB_OUTPUT_ANALOG))
1330                                nv_connector->type = DCB_CONNECTOR_DVI_I;
1331                        else
1332                                nv_connector->type = DCB_CONNECTOR_DVI_D;
1333                } else
1334                if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1335                        nv_connector->type = DCB_CONNECTOR_VGA;
1336                } else
1337                if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1338                        nv_connector->type = DCB_CONNECTOR_LVDS;
1339                } else
1340                if (encoders & (1 << DCB_OUTPUT_TV)) {
1341                        nv_connector->type = DCB_CONNECTOR_TV_0;
1342                }
1343        }
1344
1345        switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1346        case DRM_MODE_CONNECTOR_LVDS:
1347                ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1348                if (ret) {
1349                        NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1350                        kfree(nv_connector);
1351                        return ERR_PTR(ret);
1352                }
1353
1354                funcs = &nouveau_connector_funcs_lvds;
1355                break;
1356        case DRM_MODE_CONNECTOR_DisplayPort:
1357        case DRM_MODE_CONNECTOR_eDP:
1358                nv_connector->aux.dev = connector->kdev;
1359                nv_connector->aux.drm_dev = dev;
1360                nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1361                snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1362                         dcbe->hasht, dcbe->hashm);
1363                nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1364                drm_dp_aux_init(&nv_connector->aux);
1365                if (ret) {
1366                        NV_ERROR(drm, "Failed to init AUX adapter for sor-%04x-%04x: %d\n",
1367                                 dcbe->hasht, dcbe->hashm, ret);
1368                        kfree(nv_connector);
1369                        return ERR_PTR(ret);
1370                }
1371                fallthrough;
1372        default:
1373                funcs = &nouveau_connector_funcs;
1374                break;
1375        }
1376
1377        /* HDMI 3D support */
1378        if ((disp->disp.object.oclass >= G82_DISP)
1379            && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1380                || (type == DRM_MODE_CONNECTOR_eDP)
1381                || (type == DRM_MODE_CONNECTOR_HDMIA)))
1382                connector->stereo_allowed = true;
1383
1384        /* defaults, will get overridden in detect() */
1385        connector->interlace_allowed = false;
1386        connector->doublescan_allowed = false;
1387
1388        drm_connector_init(dev, connector, funcs, type);
1389        drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1390
1391        connector->funcs->reset(connector);
1392        nouveau_conn_attach_properties(connector);
1393
1394        /* Default scaling mode */
1395        switch (nv_connector->type) {
1396        case DCB_CONNECTOR_LVDS:
1397        case DCB_CONNECTOR_LVDS_SPWG:
1398        case DCB_CONNECTOR_eDP:
1399                /* see note in nouveau_connector_set_property() */
1400                if (disp->disp.object.oclass < NV50_DISP) {
1401                        nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1402                        break;
1403                }
1404                nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1405                break;
1406        default:
1407                nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1408                break;
1409        }
1410
1411        /* dithering properties */
1412        switch (nv_connector->type) {
1413        case DCB_CONNECTOR_TV_0:
1414        case DCB_CONNECTOR_TV_1:
1415        case DCB_CONNECTOR_TV_3:
1416        case DCB_CONNECTOR_VGA:
1417                break;
1418        default:
1419                nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1420                break;
1421        }
1422
1423        switch (type) {
1424        case DRM_MODE_CONNECTOR_DisplayPort:
1425        case DRM_MODE_CONNECTOR_eDP:
1426                drm_dp_cec_register_connector(&nv_connector->aux, connector);
1427                break;
1428        }
1429
1430        ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1431                               nouveau_connector_hotplug,
1432                               true, NV04_DISP_NTFY_CONN,
1433                               &(struct nvif_notify_conn_req_v0) {
1434                                .mask = NVIF_NOTIFY_CONN_V0_ANY,
1435                                .conn = index,
1436                               },
1437                               sizeof(struct nvif_notify_conn_req_v0),
1438                               sizeof(struct nvif_notify_conn_rep_v0),
1439                               &nv_connector->hpd);
1440        if (ret)
1441                connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1442        else
1443                connector->polled = DRM_CONNECTOR_POLL_HPD;
1444
1445        drm_connector_register(connector);
1446        return connector;
1447}
1448