drivers/gpu/drm/nouveau/nouveau

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This source file includes following definitions.
nouveau_conn_native_mode
nouveau_conn_atomic_get_property
nouveau_conn_atomic_set_property
nouveau_conn_atomic_destroy_state
nouveau_conn_atomic_duplicate_state
nouveau_conn_reset
nouveau_conn_attach_properties
find_encoder
nouveau_encoder_connector_get
nouveau_connector_destroy
nouveau_connector_ddc_detect
nouveau_connector_of_detect
nouveau_connector_set_encoder
nouveau_connector_detect
nouveau_connector_detect_lvds
nouveau_connector_force
nouveau_connector_set_property
nouveau_connector_scaler_modes_add
nouveau_connector_detect_depth
nouveau_connector_late_register
nouveau_connector_early_unregister
nouveau_connector_get_modes
get_tmds_link_bandwidth
nouveau_connector_mode_valid
nouveau_connector_best_encoder
nouveau_connector_hotplug
nouveau_connector_aux_xfer
drm_conntype_from_dcb
nouveau_connector_create
   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 "nouveau_acpi.h"
  42 
  43 #include "nouveau_display.h"
  44 #include "nouveau_connector.h"
  45 #include "nouveau_encoder.h"
  46 #include "nouveau_crtc.h"
  47 
  48 #include <nvif/class.h>
  49 #include <nvif/cl0046.h>
  50 #include <nvif/event.h>
  51 
  52 struct drm_display_mode *
  53 nouveau_conn_native_mode(struct drm_connector *connector)
  54 {
  55         const struct drm_connector_helper_funcs *helper = connector->helper_private;
  56         struct nouveau_drm *drm = nouveau_drm(connector->dev);
  57         struct drm_device *dev = connector->dev;
  58         struct drm_display_mode *mode, *largest = NULL;
  59         int high_w = 0, high_h = 0, high_v = 0;
  60 
  61         list_for_each_entry(mode, &connector->probed_modes, head) {
  62                 mode->vrefresh = drm_mode_vrefresh(mode);
  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                     mode->vrefresh < high_v)
  84                         continue;
  85 
  86                 high_w = mode->hdisplay;
  87                 high_h = mode->vdisplay;
  88                 high_v = mode->vrefresh;
  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 
  97 int
  98 nouveau_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 
 128 int
 129 nouveau_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                 case DRM_MODE_SCALE_FULLSCREEN:
 161                 case DRM_MODE_SCALE_CENTER:
 162                 case DRM_MODE_SCALE_ASPECT:
 163                         break;
 164                 default:
 165                         return -EINVAL;
 166                 }
 167 
 168                 if (asyc->scaler.mode != val) {
 169                         asyc->scaler.mode = val;
 170                         asyc->set.scaler = true;
 171                 }
 172         } else
 173         if (property == disp->underscan_property) {
 174                 if (asyc->scaler.underscan.mode != val) {
 175                         asyc->scaler.underscan.mode = val;
 176                         asyc->set.scaler = true;
 177                 }
 178         } else
 179         if (property == disp->underscan_hborder_property) {
 180                 if (asyc->scaler.underscan.hborder != val) {
 181                         asyc->scaler.underscan.hborder = val;
 182                         asyc->set.scaler = true;
 183                 }
 184         } else
 185         if (property == disp->underscan_vborder_property) {
 186                 if (asyc->scaler.underscan.vborder != val) {
 187                         asyc->scaler.underscan.vborder = val;
 188                         asyc->set.scaler = true;
 189                 }
 190         } else
 191         if (property == disp->dithering_mode) {
 192                 if (asyc->dither.mode != val) {
 193                         asyc->dither.mode = val;
 194                         asyc->set.dither = true;
 195                 }
 196         } else
 197         if (property == disp->dithering_depth) {
 198                 if (asyc->dither.mode != val) {
 199                         asyc->dither.depth = val;
 200                         asyc->set.dither = true;
 201                 }
 202         } else
 203         if (property == disp->vibrant_hue_property) {
 204                 if (asyc->procamp.vibrant_hue != val) {
 205                         asyc->procamp.vibrant_hue = val;
 206                         asyc->set.procamp = true;
 207                 }
 208         } else
 209         if (property == disp->color_vibrance_property) {
 210                 if (asyc->procamp.color_vibrance != val) {
 211                         asyc->procamp.color_vibrance = val;
 212                         asyc->set.procamp = true;
 213                 }
 214         } else {
 215                 return -EINVAL;
 216         }
 217 
 218         return 0;
 219 }
 220 
 221 void
 222 nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 223                                   struct drm_connector_state *state)
 224 {
 225         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 226         __drm_atomic_helper_connector_destroy_state(&asyc->state);
 227         kfree(asyc);
 228 }
 229 
 230 struct drm_connector_state *
 231 nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 232 {
 233         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 234         struct nouveau_conn_atom *asyc;
 235         if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 236                 return NULL;
 237         __drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 238         asyc->dither = armc->dither;
 239         asyc->scaler = armc->scaler;
 240         asyc->procamp = armc->procamp;
 241         asyc->set.mask = 0;
 242         return &asyc->state;
 243 }
 244 
 245 void
 246 nouveau_conn_reset(struct drm_connector *connector)
 247 {
 248         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 249         struct nouveau_conn_atom *asyc;
 250 
 251         if (drm_drv_uses_atomic_modeset(connector->dev)) {
 252                 if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 253                         return;
 254 
 255                 if (connector->state)
 256                         nouveau_conn_atomic_destroy_state(connector,
 257                                                           connector->state);
 258 
 259                 __drm_atomic_helper_connector_reset(connector, &asyc->state);
 260         } else {
 261                 asyc = &nv_connector->properties_state;
 262         }
 263 
 264         asyc->dither.mode = DITHERING_MODE_AUTO;
 265         asyc->dither.depth = DITHERING_DEPTH_AUTO;
 266         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 267         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 268         asyc->procamp.color_vibrance = 150;
 269         asyc->procamp.vibrant_hue = 90;
 270 
 271         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 272                 switch (connector->connector_type) {
 273                 case DRM_MODE_CONNECTOR_LVDS:
 274                         /* See note in nouveau_conn_atomic_set_property(). */
 275                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 276                         break;
 277                 default:
 278                         break;
 279                 }
 280         }
 281 }
 282 
 283 void
 284 nouveau_conn_attach_properties(struct drm_connector *connector)
 285 {
 286         struct drm_device *dev = connector->dev;
 287         struct nouveau_display *disp = nouveau_display(dev);
 288         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 289         struct nouveau_conn_atom *armc;
 290 
 291         if (drm_drv_uses_atomic_modeset(connector->dev))
 292                 armc = nouveau_conn_atom(connector->state);
 293         else
 294                 armc = &nv_connector->properties_state;
 295 
 296         /* Init DVI-I specific properties. */
 297         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 298                 drm_object_attach_property(&connector->base, dev->mode_config.
 299                                            dvi_i_subconnector_property, 0);
 300 
 301         /* Add overscan compensation options to digital outputs. */
 302         if (disp->underscan_property &&
 303             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 304              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 305              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 306              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 307                 drm_object_attach_property(&connector->base,
 308                                            disp->underscan_property,
 309                                            UNDERSCAN_OFF);
 310                 drm_object_attach_property(&connector->base,
 311                                            disp->underscan_hborder_property, 0);
 312                 drm_object_attach_property(&connector->base,
 313                                            disp->underscan_vborder_property, 0);
 314         }
 315 
 316         /* Add hue and saturation options. */
 317         if (disp->vibrant_hue_property)
 318                 drm_object_attach_property(&connector->base,
 319                                            disp->vibrant_hue_property,
 320                                            armc->procamp.vibrant_hue);
 321         if (disp->color_vibrance_property)
 322                 drm_object_attach_property(&connector->base,
 323                                            disp->color_vibrance_property,
 324                                            armc->procamp.color_vibrance);
 325 
 326         /* Scaling mode property. */
 327         switch (connector->connector_type) {
 328         case DRM_MODE_CONNECTOR_TV:
 329                 break;
 330         case DRM_MODE_CONNECTOR_VGA:
 331                 if (disp->disp.object.oclass < NV50_DISP)
 332                         break; /* Can only scale on DFPs. */
 333                 /* Fall-through. */
 334         default:
 335                 drm_object_attach_property(&connector->base, dev->mode_config.
 336                                            scaling_mode_property,
 337                                            armc->scaler.mode);
 338                 break;
 339         }
 340 
 341         /* Dithering properties. */
 342         switch (connector->connector_type) {
 343         case DRM_MODE_CONNECTOR_TV:
 344         case DRM_MODE_CONNECTOR_VGA:
 345                 break;
 346         default:
 347                 if (disp->dithering_mode) {
 348                         drm_object_attach_property(&connector->base,
 349                                                    disp->dithering_mode,
 350                                                    armc->dither.mode);
 351                 }
 352                 if (disp->dithering_depth) {
 353                         drm_object_attach_property(&connector->base,
 354                                                    disp->dithering_depth,
 355                                                    armc->dither.depth);
 356                 }
 357                 break;
 358         }
 359 }
 360 
 361 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 362 int nouveau_tv_disable = 0;
 363 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 364 
 365 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 366 int nouveau_ignorelid = 0;
 367 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 368 
 369 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 370 int nouveau_duallink = 1;
 371 module_param_named(duallink, nouveau_duallink, int, 0400);
 372 
 373 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 374 int nouveau_hdmimhz = 0;
 375 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 376 
 377 struct nouveau_encoder *
 378 find_encoder(struct drm_connector *connector, int type)
 379 {
 380         struct nouveau_encoder *nv_encoder;
 381         struct drm_encoder *enc;
 382         int i;
 383 
 384         drm_connector_for_each_possible_encoder(connector, enc, i) {
 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 
 395 struct nouveau_connector *
 396 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
 397 {
 398         struct drm_device *dev = to_drm_encoder(encoder)->dev;
 399         struct drm_connector *drm_connector;
 400 
 401         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
 402                 if (drm_connector->encoder == to_drm_encoder(encoder))
 403                         return nouveau_connector(drm_connector);
 404         }
 405 
 406         return NULL;
 407 }
 408 
 409 static void
 410 nouveau_connector_destroy(struct drm_connector *connector)
 411 {
 412         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 413         nvif_notify_fini(&nv_connector->hpd);
 414         kfree(nv_connector->edid);
 415         drm_connector_unregister(connector);
 416         drm_connector_cleanup(connector);
 417         if (nv_connector->aux.transfer) {
 418                 drm_dp_cec_unregister_connector(&nv_connector->aux);
 419                 drm_dp_aux_unregister(&nv_connector->aux);
 420                 kfree(nv_connector->aux.name);
 421         }
 422         kfree(connector);
 423 }
 424 
 425 static struct nouveau_encoder *
 426 nouveau_connector_ddc_detect(struct drm_connector *connector)
 427 {
 428         struct drm_device *dev = connector->dev;
 429         struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
 430         struct drm_encoder *encoder;
 431         int i, ret;
 432         bool switcheroo_ddc = false;
 433 
 434         drm_connector_for_each_possible_encoder(connector, encoder, i) {
 435                 nv_encoder = nouveau_encoder(encoder);
 436 
 437                 switch (nv_encoder->dcb->type) {
 438                 case DCB_OUTPUT_DP:
 439                         ret = nouveau_dp_detect(nv_encoder);
 440                         if (ret == NOUVEAU_DP_MST)
 441                                 return NULL;
 442                         else if (ret == NOUVEAU_DP_SST)
 443                                 found = nv_encoder;
 444 
 445                         break;
 446                 case DCB_OUTPUT_LVDS:
 447                         switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 448                                             VGA_SWITCHEROO_CAN_SWITCH_DDC);
 449                 /* fall-through */
 450                 default:
 451                         if (!nv_encoder->i2c)
 452                                 break;
 453 
 454                         if (switcheroo_ddc)
 455                                 vga_switcheroo_lock_ddc(dev->pdev);
 456                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 457                                 found = nv_encoder;
 458                         if (switcheroo_ddc)
 459                                 vga_switcheroo_unlock_ddc(dev->pdev);
 460 
 461                         break;
 462                 }
 463                 if (found)
 464                         break;
 465         }
 466 
 467         return found;
 468 }
 469 
 470 static struct nouveau_encoder *
 471 nouveau_connector_of_detect(struct drm_connector *connector)
 472 {
 473 #ifdef __powerpc__
 474         struct drm_device *dev = connector->dev;
 475         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 476         struct nouveau_encoder *nv_encoder;
 477         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
 478 
 479         if (!dn ||
 480             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 481               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 482                 return NULL;
 483 
 484         for_each_child_of_node(dn, cn) {
 485                 const char *name = of_get_property(cn, "name", NULL);
 486                 const void *edid = of_get_property(cn, "EDID", NULL);
 487                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 488 
 489                 if (nv_encoder->dcb->i2c_index == idx && edid) {
 490                         nv_connector->edid =
 491                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 492                         of_node_put(cn);
 493                         return nv_encoder;
 494                 }
 495         }
 496 #endif
 497         return NULL;
 498 }
 499 
 500 static void
 501 nouveau_connector_set_encoder(struct drm_connector *connector,
 502                               struct nouveau_encoder *nv_encoder)
 503 {
 504         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 505         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 506         struct drm_device *dev = connector->dev;
 507 
 508         if (nv_connector->detected_encoder == nv_encoder)
 509                 return;
 510         nv_connector->detected_encoder = nv_encoder;
 511 
 512         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 513                 connector->interlace_allowed = true;
 514                 connector->doublescan_allowed = true;
 515         } else
 516         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 517             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 518                 connector->doublescan_allowed = false;
 519                 connector->interlace_allowed = false;
 520         } else {
 521                 connector->doublescan_allowed = true;
 522                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 523                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 524                      (dev->pdev->device & 0x0ff0) != 0x0100 &&
 525                      (dev->pdev->device & 0x0ff0) != 0x0150))
 526                         /* HW is broken */
 527                         connector->interlace_allowed = false;
 528                 else
 529                         connector->interlace_allowed = true;
 530         }
 531 
 532         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 533                 drm_object_property_set_value(&connector->base,
 534                         dev->mode_config.dvi_i_subconnector_property,
 535                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 536                         DRM_MODE_SUBCONNECTOR_DVID :
 537                         DRM_MODE_SUBCONNECTOR_DVIA);
 538         }
 539 }
 540 
 541 static enum drm_connector_status
 542 nouveau_connector_detect(struct drm_connector *connector, bool force)
 543 {
 544         struct drm_device *dev = connector->dev;
 545         struct nouveau_drm *drm = nouveau_drm(dev);
 546         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 547         struct nouveau_encoder *nv_encoder = NULL;
 548         struct nouveau_encoder *nv_partner;
 549         struct i2c_adapter *i2c;
 550         int type;
 551         int ret;
 552         enum drm_connector_status conn_status = connector_status_disconnected;
 553 
 554         /* Cleanup the previous EDID block. */
 555         if (nv_connector->edid) {
 556                 drm_connector_update_edid_property(connector, NULL);
 557                 kfree(nv_connector->edid);
 558                 nv_connector->edid = NULL;
 559         }
 560 
 561         /* Outputs are only polled while runtime active, so resuming the
 562          * device here is unnecessary (and would deadlock upon runtime suspend
 563          * because it waits for polling to finish). We do however, want to
 564          * prevent the autosuspend timer from elapsing during this operation
 565          * if possible.
 566          */
 567         if (drm_kms_helper_is_poll_worker()) {
 568                 pm_runtime_get_noresume(dev->dev);
 569         } else {
 570                 ret = pm_runtime_get_sync(dev->dev);
 571                 if (ret < 0 && ret != -EACCES)
 572                         return conn_status;
 573         }
 574 
 575         nv_encoder = nouveau_connector_ddc_detect(connector);
 576         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
 577                 if ((vga_switcheroo_handler_flags() &
 578                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 579                     nv_connector->type == DCB_CONNECTOR_LVDS)
 580                         nv_connector->edid = drm_get_edid_switcheroo(connector,
 581                                                                      i2c);
 582                 else
 583                         nv_connector->edid = drm_get_edid(connector, i2c);
 584 
 585                 drm_connector_update_edid_property(connector,
 586                                                         nv_connector->edid);
 587                 if (!nv_connector->edid) {
 588                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 589                                  connector->name);
 590                         goto detect_analog;
 591                 }
 592 
 593                 /* Override encoder type for DVI-I based on whether EDID
 594                  * says the display is digital or analog, both use the
 595                  * same i2c channel so the value returned from ddc_detect
 596                  * isn't necessarily correct.
 597                  */
 598                 nv_partner = NULL;
 599                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 600                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 601                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 602                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 603 
 604                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 605                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 606                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 607                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 608                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 609                                 type = DCB_OUTPUT_TMDS;
 610                         else
 611                                 type = DCB_OUTPUT_ANALOG;
 612 
 613                         nv_encoder = find_encoder(connector, type);
 614                 }
 615 
 616                 nouveau_connector_set_encoder(connector, nv_encoder);
 617                 conn_status = connector_status_connected;
 618                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 619                 goto out;
 620         }
 621 
 622         nv_encoder = nouveau_connector_of_detect(connector);
 623         if (nv_encoder) {
 624                 nouveau_connector_set_encoder(connector, nv_encoder);
 625                 conn_status = connector_status_connected;
 626                 goto out;
 627         }
 628 
 629 detect_analog:
 630         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 631         if (!nv_encoder && !nouveau_tv_disable)
 632                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 633         if (nv_encoder && force) {
 634                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 635                 const struct drm_encoder_helper_funcs *helper =
 636                                                 encoder->helper_private;
 637 
 638                 if (helper->detect(encoder, connector) ==
 639                                                 connector_status_connected) {
 640                         nouveau_connector_set_encoder(connector, nv_encoder);
 641                         conn_status = connector_status_connected;
 642                         goto out;
 643                 }
 644 
 645         }
 646 
 647  out:
 648 
 649         pm_runtime_mark_last_busy(dev->dev);
 650         pm_runtime_put_autosuspend(dev->dev);
 651 
 652         return conn_status;
 653 }
 654 
 655 static enum drm_connector_status
 656 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 657 {
 658         struct drm_device *dev = connector->dev;
 659         struct nouveau_drm *drm = nouveau_drm(dev);
 660         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 661         struct nouveau_encoder *nv_encoder = NULL;
 662         enum drm_connector_status status = connector_status_disconnected;
 663 
 664         /* Cleanup the previous EDID block. */
 665         if (nv_connector->edid) {
 666                 drm_connector_update_edid_property(connector, NULL);
 667                 kfree(nv_connector->edid);
 668                 nv_connector->edid = NULL;
 669         }
 670 
 671         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 672         if (!nv_encoder)
 673                 return connector_status_disconnected;
 674 
 675         /* Try retrieving EDID via DDC */
 676         if (!drm->vbios.fp_no_ddc) {
 677                 status = nouveau_connector_detect(connector, force);
 678                 if (status == connector_status_connected)
 679                         goto out;
 680         }
 681 
 682         /* On some laptops (Sony, i'm looking at you) there appears to
 683          * be no direct way of accessing the panel's EDID.  The only
 684          * option available to us appears to be to ask ACPI for help..
 685          *
 686          * It's important this check's before trying straps, one of the
 687          * said manufacturer's laptops are configured in such a way
 688          * the nouveau decides an entry in the VBIOS FP mode table is
 689          * valid - it's not (rh#613284)
 690          */
 691         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 692                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
 693                         status = connector_status_connected;
 694                         goto out;
 695                 }
 696         }
 697 
 698         /* If no EDID found above, and the VBIOS indicates a hardcoded
 699          * modeline is avalilable for the panel, set it as the panel's
 700          * native mode and exit.
 701          */
 702         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 703             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 704                 status = connector_status_connected;
 705                 goto out;
 706         }
 707 
 708         /* Still nothing, some VBIOS images have a hardcoded EDID block
 709          * stored for the panel stored in them.
 710          */
 711         if (!drm->vbios.fp_no_ddc) {
 712                 struct edid *edid =
 713                         (struct edid *)nouveau_bios_embedded_edid(dev);
 714                 if (edid) {
 715                         nv_connector->edid =
 716                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 717                         if (nv_connector->edid)
 718                                 status = connector_status_connected;
 719                 }
 720         }
 721 
 722 out:
 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         drm_connector_update_edid_property(connector, nv_connector->edid);
 731         nouveau_connector_set_encoder(connector, nv_encoder);
 732         return status;
 733 }
 734 
 735 static void
 736 nouveau_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 
 762 static int
 763 nouveau_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 
 798 struct moderec {
 799         int hdisplay;
 800         int vdisplay;
 801 };
 802 
 803 static 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 
 821 static int
 822 nouveau_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 
 854 static void
 855 nouveau_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 
 903 static int
 904 nouveau_connector_late_register(struct drm_connector *connector)
 905 {
 906         int ret;
 907 
 908         ret = nouveau_backlight_init(connector);
 909 
 910         return ret;
 911 }
 912 
 913 static void
 914 nouveau_connector_early_unregister(struct drm_connector *connector)
 915 {
 916         nouveau_backlight_fini(connector);
 917 }
 918 
 919 static int
 920 nouveau_connector_get_modes(struct drm_connector *connector)
 921 {
 922         struct drm_device *dev = connector->dev;
 923         struct nouveau_drm *drm = nouveau_drm(dev);
 924         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 925         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 926         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 927         int ret = 0;
 928 
 929         /* destroy the native mode, the attached monitor could have changed.
 930          */
 931         if (nv_connector->native_mode) {
 932                 drm_mode_destroy(dev, nv_connector->native_mode);
 933                 nv_connector->native_mode = NULL;
 934         }
 935 
 936         if (nv_connector->edid)
 937                 ret = drm_add_edid_modes(connector, nv_connector->edid);
 938         else
 939         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 940             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 941              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 942                 struct drm_display_mode mode;
 943 
 944                 nouveau_bios_fp_mode(dev, &mode);
 945                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 946         }
 947 
 948         /* Determine display colour depth for everything except LVDS now,
 949          * DP requires this before mode_valid() is called.
 950          */
 951         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 952                 nouveau_connector_detect_depth(connector);
 953 
 954         /* Find the native mode if this is a digital panel, if we didn't
 955          * find any modes through DDC previously add the native mode to
 956          * the list of modes.
 957          */
 958         if (!nv_connector->native_mode)
 959                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
 960         if (ret == 0 && nv_connector->native_mode) {
 961                 struct drm_display_mode *mode;
 962 
 963                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
 964                 drm_mode_probed_add(connector, mode);
 965                 ret = 1;
 966         }
 967 
 968         /* Determine LVDS colour depth, must happen after determining
 969          * "native" mode as some VBIOS tables require us to use the
 970          * pixel clock as part of the lookup...
 971          */
 972         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
 973                 nouveau_connector_detect_depth(connector);
 974 
 975         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
 976                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
 977 
 978         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
 979             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
 980             nv_connector->type == DCB_CONNECTOR_eDP)
 981                 ret += nouveau_connector_scaler_modes_add(connector);
 982 
 983         return ret;
 984 }
 985 
 986 static unsigned
 987 get_tmds_link_bandwidth(struct drm_connector *connector)
 988 {
 989         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 990         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 991         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 992         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
 993         struct drm_display_info *info = NULL;
 994         unsigned duallink_scale =
 995                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
 996 
 997         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
 998                 info = &nv_connector->base.display_info;
 999                 duallink_scale = 1;
1000         }
1001 
1002         if (info) {
1003                 if (nouveau_hdmimhz > 0)
1004                         return nouveau_hdmimhz * 1000;
1005                 /* Note: these limits are conservative, some Fermi's
1006                  * can do 297 MHz. Unclear how this can be determined.
1007                  */
1008                 if (drm->client.device.info.chipset >= 0x120) {
1009                         const int max_tmds_clock =
1010                                 info->hdmi.scdc.scrambling.supported ?
1011                                 594000 : 340000;
1012                         return info->max_tmds_clock ?
1013                                 min(info->max_tmds_clock, max_tmds_clock) :
1014                                 max_tmds_clock;
1015                 }
1016                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1017                         return 297000;
1018                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1019                         return 225000;
1020         }
1021 
1022         if (dcb->location != DCB_LOC_ON_CHIP ||
1023             drm->client.device.info.chipset >= 0x46)
1024                 return 165000 * duallink_scale;
1025         else if (drm->client.device.info.chipset >= 0x40)
1026                 return 155000 * duallink_scale;
1027         else if (drm->client.device.info.chipset >= 0x18)
1028                 return 135000 * duallink_scale;
1029         else
1030                 return 112000 * duallink_scale;
1031 }
1032 
1033 static enum drm_mode_status
1034 nouveau_connector_mode_valid(struct drm_connector *connector,
1035                              struct drm_display_mode *mode)
1036 {
1037         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1038         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1039         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1040         unsigned min_clock = 25000, max_clock = min_clock;
1041         unsigned clock = mode->clock;
1042 
1043         switch (nv_encoder->dcb->type) {
1044         case DCB_OUTPUT_LVDS:
1045                 if (nv_connector->native_mode &&
1046                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1047                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1048                         return MODE_PANEL;
1049 
1050                 min_clock = 0;
1051                 max_clock = 400000;
1052                 break;
1053         case DCB_OUTPUT_TMDS:
1054                 max_clock = get_tmds_link_bandwidth(connector);
1055                 break;
1056         case DCB_OUTPUT_ANALOG:
1057                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1058                 if (!max_clock)
1059                         max_clock = 350000;
1060                 break;
1061         case DCB_OUTPUT_TV:
1062                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1063         case DCB_OUTPUT_DP:
1064                 max_clock  = nv_encoder->dp.link_nr;
1065                 max_clock *= nv_encoder->dp.link_bw;
1066                 clock = clock * (connector->display_info.bpc * 3) / 10;
1067                 break;
1068         default:
1069                 BUG();
1070                 return MODE_BAD;
1071         }
1072 
1073         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1074                 clock *= 2;
1075 
1076         if (clock < min_clock)
1077                 return MODE_CLOCK_LOW;
1078 
1079         if (clock > max_clock)
1080                 return MODE_CLOCK_HIGH;
1081 
1082         return MODE_OK;
1083 }
1084 
1085 static struct drm_encoder *
1086 nouveau_connector_best_encoder(struct drm_connector *connector)
1087 {
1088         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1089 
1090         if (nv_connector->detected_encoder)
1091                 return to_drm_encoder(nv_connector->detected_encoder);
1092 
1093         return NULL;
1094 }
1095 
1096 static const struct drm_connector_helper_funcs
1097 nouveau_connector_helper_funcs = {
1098         .get_modes = nouveau_connector_get_modes,
1099         .mode_valid = nouveau_connector_mode_valid,
1100         .best_encoder = nouveau_connector_best_encoder,
1101 };
1102 
1103 static const struct drm_connector_funcs
1104 nouveau_connector_funcs = {
1105         .dpms = drm_helper_connector_dpms,
1106         .reset = nouveau_conn_reset,
1107         .detect = nouveau_connector_detect,
1108         .force = nouveau_connector_force,
1109         .fill_modes = drm_helper_probe_single_connector_modes,
1110         .set_property = nouveau_connector_set_property,
1111         .destroy = nouveau_connector_destroy,
1112         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1113         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1114         .atomic_set_property = nouveau_conn_atomic_set_property,
1115         .atomic_get_property = nouveau_conn_atomic_get_property,
1116         .late_register = nouveau_connector_late_register,
1117         .early_unregister = nouveau_connector_early_unregister,
1118 };
1119 
1120 static const struct drm_connector_funcs
1121 nouveau_connector_funcs_lvds = {
1122         .dpms = drm_helper_connector_dpms,
1123         .reset = nouveau_conn_reset,
1124         .detect = nouveau_connector_detect_lvds,
1125         .force = nouveau_connector_force,
1126         .fill_modes = drm_helper_probe_single_connector_modes,
1127         .set_property = nouveau_connector_set_property,
1128         .destroy = nouveau_connector_destroy,
1129         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1130         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1131         .atomic_set_property = nouveau_conn_atomic_set_property,
1132         .atomic_get_property = nouveau_conn_atomic_get_property,
1133         .late_register = nouveau_connector_late_register,
1134         .early_unregister = nouveau_connector_early_unregister,
1135 };
1136 
1137 static int
1138 nouveau_connector_hotplug(struct nvif_notify *notify)
1139 {
1140         struct nouveau_connector *nv_connector =
1141                 container_of(notify, typeof(*nv_connector), hpd);
1142         struct drm_connector *connector = &nv_connector->base;
1143         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1144         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1145         const char *name = connector->name;
1146         struct nouveau_encoder *nv_encoder;
1147         int ret;
1148         bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1149 
1150         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1151                 NV_DEBUG(drm, "service %s\n", name);
1152                 drm_dp_cec_irq(&nv_connector->aux);
1153                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1154                         nv50_mstm_service(nv_encoder->dp.mstm);
1155 
1156                 return NVIF_NOTIFY_KEEP;
1157         }
1158 
1159         ret = pm_runtime_get(drm->dev->dev);
1160         if (ret == 0) {
1161                 /* We can't block here if there's a pending PM request
1162                  * running, as we'll deadlock nouveau_display_fini() when it
1163                  * calls nvif_put() on our nvif_notify struct. So, simply
1164                  * defer the hotplug event until the device finishes resuming
1165                  */
1166                 NV_DEBUG(drm, "Deferring HPD on %s until runtime resume\n",
1167                          name);
1168                 schedule_work(&drm->hpd_work);
1169 
1170                 pm_runtime_put_noidle(drm->dev->dev);
1171                 return NVIF_NOTIFY_KEEP;
1172         } else if (ret != 1 && ret != -EACCES) {
1173                 NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
1174                         name, ret);
1175                 return NVIF_NOTIFY_DROP;
1176         }
1177 
1178         if (!plugged)
1179                 drm_dp_cec_unset_edid(&nv_connector->aux);
1180         NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1181         if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1182                 if (!plugged)
1183                         nv50_mstm_remove(nv_encoder->dp.mstm);
1184         }
1185 
1186         drm_helper_hpd_irq_event(connector->dev);
1187 
1188         pm_runtime_mark_last_busy(drm->dev->dev);
1189         pm_runtime_put_autosuspend(drm->dev->dev);
1190         return NVIF_NOTIFY_KEEP;
1191 }
1192 
1193 static ssize_t
1194 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1195 {
1196         struct nouveau_connector *nv_connector =
1197                 container_of(obj, typeof(*nv_connector), aux);
1198         struct nouveau_encoder *nv_encoder;
1199         struct nvkm_i2c_aux *aux;
1200         u8 size = msg->size;
1201         int ret;
1202 
1203         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1204         if (!nv_encoder || !(aux = nv_encoder->aux))
1205                 return -ENODEV;
1206         if (WARN_ON(msg->size > 16))
1207                 return -E2BIG;
1208 
1209         ret = nvkm_i2c_aux_acquire(aux);
1210         if (ret)
1211                 return ret;
1212 
1213         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1214                                 msg->buffer, &size);
1215         nvkm_i2c_aux_release(aux);
1216         if (ret >= 0) {
1217                 msg->reply = ret;
1218                 return size;
1219         }
1220 
1221         return ret;
1222 }
1223 
1224 static int
1225 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1226 {
1227         switch (dcb) {
1228         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1229         case DCB_CONNECTOR_TV_0     :
1230         case DCB_CONNECTOR_TV_1     :
1231         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1232         case DCB_CONNECTOR_DMS59_0  :
1233         case DCB_CONNECTOR_DMS59_1  :
1234         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1235         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1236         case DCB_CONNECTOR_LVDS     :
1237         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1238         case DCB_CONNECTOR_DMS59_DP0:
1239         case DCB_CONNECTOR_DMS59_DP1:
1240         case DCB_CONNECTOR_DP       :
1241         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1242         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1243         case DCB_CONNECTOR_HDMI_0   :
1244         case DCB_CONNECTOR_HDMI_1   :
1245         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1246         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1247         default:
1248                 break;
1249         }
1250 
1251         return DRM_MODE_CONNECTOR_Unknown;
1252 }
1253 
1254 struct drm_connector *
1255 nouveau_connector_create(struct drm_device *dev,
1256                          const struct dcb_output *dcbe)
1257 {
1258         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1259         struct nouveau_drm *drm = nouveau_drm(dev);
1260         struct nouveau_display *disp = nouveau_display(dev);
1261         struct nouveau_connector *nv_connector = NULL;
1262         struct drm_connector *connector;
1263         struct drm_connector_list_iter conn_iter;
1264         char aux_name[48] = {0};
1265         int index = dcbe->connector;
1266         int type, ret = 0;
1267         bool dummy;
1268 
1269         drm_connector_list_iter_begin(dev, &conn_iter);
1270         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1271                 nv_connector = nouveau_connector(connector);
1272                 if (nv_connector->index == index) {
1273                         drm_connector_list_iter_end(&conn_iter);
1274                         return connector;
1275                 }
1276         }
1277         drm_connector_list_iter_end(&conn_iter);
1278 
1279         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1280         if (!nv_connector)
1281                 return ERR_PTR(-ENOMEM);
1282 
1283         connector = &nv_connector->base;
1284         nv_connector->index = index;
1285 
1286         /* attempt to parse vbios connector type and hotplug gpio */
1287         nv_connector->dcb = olddcb_conn(dev, index);
1288         if (nv_connector->dcb) {
1289                 u32 entry = ROM16(nv_connector->dcb[0]);
1290                 if (olddcb_conntab(dev)[3] >= 4)
1291                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1292 
1293                 nv_connector->type = nv_connector->dcb[0];
1294                 if (drm_conntype_from_dcb(nv_connector->type) ==
1295                                           DRM_MODE_CONNECTOR_Unknown) {
1296                         NV_WARN(drm, "unknown connector type %02x\n",
1297                                 nv_connector->type);
1298                         nv_connector->type = DCB_CONNECTOR_NONE;
1299                 }
1300 
1301                 /* Gigabyte NX85T */
1302                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1303                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1304                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1305                 }
1306 
1307                 /* Gigabyte GV-NX86T512H */
1308                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1309                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1310                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1311                 }
1312         } else {
1313                 nv_connector->type = DCB_CONNECTOR_NONE;
1314         }
1315 
1316         /* no vbios data, or an unknown dcb connector type - attempt to
1317          * figure out something suitable ourselves
1318          */
1319         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1320                 struct nouveau_drm *drm = nouveau_drm(dev);
1321                 struct dcb_table *dcbt = &drm->vbios.dcb;
1322                 u32 encoders = 0;
1323                 int i;
1324 
1325                 for (i = 0; i < dcbt->entries; i++) {
1326                         if (dcbt->entry[i].connector == nv_connector->index)
1327                                 encoders |= (1 << dcbt->entry[i].type);
1328                 }
1329 
1330                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1331                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1332                                 nv_connector->type = DCB_CONNECTOR_DP;
1333                         else
1334                                 nv_connector->type = DCB_CONNECTOR_eDP;
1335                 } else
1336                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1337                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1338                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1339                         else
1340                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1341                 } else
1342                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1343                         nv_connector->type = DCB_CONNECTOR_VGA;
1344                 } else
1345                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1346                         nv_connector->type = DCB_CONNECTOR_LVDS;
1347                 } else
1348                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1349                         nv_connector->type = DCB_CONNECTOR_TV_0;
1350                 }
1351         }
1352 
1353         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1354         case DRM_MODE_CONNECTOR_LVDS:
1355                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1356                 if (ret) {
1357                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1358                         kfree(nv_connector);
1359                         return ERR_PTR(ret);
1360                 }
1361 
1362                 funcs = &nouveau_connector_funcs_lvds;
1363                 break;
1364         case DRM_MODE_CONNECTOR_DisplayPort:
1365         case DRM_MODE_CONNECTOR_eDP:
1366                 nv_connector->aux.dev = connector->kdev;
1367                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1368                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1369                          dcbe->hasht, dcbe->hashm);
1370                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1371                 ret = drm_dp_aux_register(&nv_connector->aux);
1372                 if (ret) {
1373                         NV_ERROR(drm, "failed to register aux channel\n");
1374                         kfree(nv_connector);
1375                         return ERR_PTR(ret);
1376                 }
1377                 funcs = &nouveau_connector_funcs;
1378                 break;
1379         default:
1380                 funcs = &nouveau_connector_funcs;
1381                 break;
1382         }
1383 
1384         /* HDMI 3D support */
1385         if ((disp->disp.object.oclass >= G82_DISP)
1386             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1387                 || (type == DRM_MODE_CONNECTOR_eDP)
1388                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1389                 connector->stereo_allowed = true;
1390 
1391         /* defaults, will get overridden in detect() */
1392         connector->interlace_allowed = false;
1393         connector->doublescan_allowed = false;
1394 
1395         drm_connector_init(dev, connector, funcs, type);
1396         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1397 
1398         connector->funcs->reset(connector);
1399         nouveau_conn_attach_properties(connector);
1400 
1401         /* Default scaling mode */
1402         switch (nv_connector->type) {
1403         case DCB_CONNECTOR_LVDS:
1404         case DCB_CONNECTOR_LVDS_SPWG:
1405         case DCB_CONNECTOR_eDP:
1406                 /* see note in nouveau_connector_set_property() */
1407                 if (disp->disp.object.oclass < NV50_DISP) {
1408                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1409                         break;
1410                 }
1411                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1412                 break;
1413         default:
1414                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1415                 break;
1416         }
1417 
1418         /* dithering properties */
1419         switch (nv_connector->type) {
1420         case DCB_CONNECTOR_TV_0:
1421         case DCB_CONNECTOR_TV_1:
1422         case DCB_CONNECTOR_TV_3:
1423         case DCB_CONNECTOR_VGA:
1424                 break;
1425         default:
1426                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1427                 break;
1428         }
1429 
1430         switch (type) {
1431         case DRM_MODE_CONNECTOR_DisplayPort:
1432         case DRM_MODE_CONNECTOR_eDP:
1433                 drm_dp_cec_register_connector(&nv_connector->aux,
1434                                               connector->name, dev->dev);
1435                 break;
1436         }
1437 
1438         ret = nvif_notify_init(&disp->disp.object, nouveau_connector_hotplug,
1439                                true, NV04_DISP_NTFY_CONN,
1440                                &(struct nvif_notify_conn_req_v0) {
1441                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1442                                 .conn = index,
1443                                },
1444                                sizeof(struct nvif_notify_conn_req_v0),
1445                                sizeof(struct nvif_notify_conn_rep_v0),
1446                                &nv_connector->hpd);
1447         if (ret)
1448                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1449         else
1450                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1451 
1452         drm_connector_register(connector);
1453         return connector;
1454 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/gpu/drm/nouveau/nouveau_connector.c

DEFINITIONS
