1 /* 2 * Copyright © 2008 Intel Corporation 3 * 2014 Red Hat Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 22 * IN THE SOFTWARE. 23 * 24 */ 25 26 #include <drm/drmP.h> 27 #include "i915_drv.h" 28 #include "intel_drv.h" 29 #include <drm/drm_atomic_helper.h> 30 #include <drm/drm_crtc_helper.h> 31 #include <drm/drm_edid.h> 32 33 #if 0 34 static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, 35 struct intel_crtc_state *pipe_config) 36 { 37 struct drm_device *dev = encoder->base.dev; 38 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 39 struct intel_digital_port *intel_dig_port = intel_mst->primary; 40 struct intel_dp *intel_dp = &intel_dig_port->dp; 41 struct drm_atomic_state *state; 42 int bpp, i; 43 int lane_count, slots; 44 const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; 45 struct drm_connector *drm_connector; 46 struct intel_connector *connector, *found = NULL; 47 struct drm_connector_state *connector_state; 48 int mst_pbn; 49 50 pipe_config->dp_encoder_is_mst = true; 51 pipe_config->has_pch_encoder = false; 52 pipe_config->has_dp_encoder = true; 53 bpp = 24; 54 /* 55 * for MST we always configure max link bw - the spec doesn't 56 * seem to suggest we should do otherwise. 57 */ 58 lane_count = drm_dp_max_lane_count(intel_dp->dpcd); 59 60 61 pipe_config->lane_count = lane_count; 62 63 pipe_config->pipe_bpp = 24; 64 pipe_config->port_clock = intel_dp_max_link_rate(intel_dp); 65 66 state = pipe_config->base.state; 67 68 for_each_connector_in_state(state, drm_connector, connector_state, i) { 69 connector = to_intel_connector(drm_connector); 70 71 if (connector_state->best_encoder == &encoder->base) { 72 found = connector; 73 break; 74 } 75 } 76 77 if (!found) { 78 DRM_ERROR("can't find connector\n"); 79 return false; 80 } 81 82 if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, found->port)) 83 pipe_config->has_audio = true; 84 mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp); 85 86 pipe_config->pbn = mst_pbn; 87 slots = drm_dp_find_vcpi_slots(&intel_dp->mst_mgr, mst_pbn); 88 89 intel_link_compute_m_n(bpp, lane_count, 90 adjusted_mode->crtc_clock, 91 pipe_config->port_clock, 92 &pipe_config->dp_m_n); 93 94 pipe_config->dp_m_n.tu = slots; 95 96 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) 97 hsw_dp_set_ddi_pll_sel(pipe_config); 98 99 return true; 100 101 } 102 103 static void intel_mst_disable_dp(struct intel_encoder *encoder) 104 { 105 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 106 struct intel_digital_port *intel_dig_port = intel_mst->primary; 107 struct intel_dp *intel_dp = &intel_dig_port->dp; 108 struct drm_device *dev = encoder->base.dev; 109 struct drm_i915_private *dev_priv = dev->dev_private; 110 struct drm_crtc *crtc = encoder->base.crtc; 111 struct intel_crtc *intel_crtc = to_intel_crtc(crtc); 112 113 int ret; 114 115 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); 116 117 drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, intel_mst->port); 118 119 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); 120 if (ret) { 121 DRM_ERROR("failed to update payload %d\n", ret); 122 } 123 if (intel_crtc->config->has_audio) { 124 intel_audio_codec_disable(encoder); 125 intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO); 126 } 127 } 128 129 static void intel_mst_post_disable_dp(struct intel_encoder *encoder) 130 { 131 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 132 struct intel_digital_port *intel_dig_port = intel_mst->primary; 133 struct intel_dp *intel_dp = &intel_dig_port->dp; 134 135 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); 136 137 /* this can fail */ 138 drm_dp_check_act_status(&intel_dp->mst_mgr); 139 /* and this can also fail */ 140 drm_dp_update_payload_part2(&intel_dp->mst_mgr); 141 142 drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, intel_mst->port); 143 144 intel_dp->active_mst_links--; 145 intel_mst->port = NULL; 146 if (intel_dp->active_mst_links == 0) { 147 intel_dig_port->base.post_disable(&intel_dig_port->base); 148 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); 149 } 150 } 151 152 static void intel_mst_pre_enable_dp(struct intel_encoder *encoder) 153 { 154 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 155 struct intel_digital_port *intel_dig_port = intel_mst->primary; 156 struct intel_dp *intel_dp = &intel_dig_port->dp; 157 struct drm_device *dev = encoder->base.dev; 158 struct drm_i915_private *dev_priv = dev->dev_private; 159 enum port port = intel_dig_port->port; 160 int ret; 161 uint32_t temp; 162 struct intel_connector *found = NULL, *connector; 163 int slots; 164 struct drm_crtc *crtc = encoder->base.crtc; 165 struct intel_crtc *intel_crtc = to_intel_crtc(crtc); 166 167 for_each_intel_connector(dev, connector) { 168 if (connector->base.state->best_encoder == &encoder->base) { 169 found = connector; 170 break; 171 } 172 } 173 174 if (!found) { 175 DRM_ERROR("can't find connector\n"); 176 return; 177 } 178 179 /* MST encoders are bound to a crtc, not to a connector, 180 * force the mapping here for get_hw_state. 181 */ 182 found->encoder = encoder; 183 184 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); 185 intel_mst->port = found->port; 186 187 if (intel_dp->active_mst_links == 0) { 188 intel_ddi_clk_select(encoder, intel_crtc->config); 189 190 intel_dp_set_link_params(intel_dp, intel_crtc->config); 191 192 intel_ddi_init_dp_buf_reg(&intel_dig_port->base); 193 194 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); 195 196 intel_dp_start_link_train(intel_dp); 197 intel_dp_stop_link_train(intel_dp); 198 } 199 200 ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, 201 intel_mst->port, 202 intel_crtc->config->pbn, &slots); 203 if (ret == false) { 204 DRM_ERROR("failed to allocate vcpi\n"); 205 return; 206 } 207 208 209 intel_dp->active_mst_links++; 210 temp = I915_READ(DP_TP_STATUS(port)); 211 I915_WRITE(DP_TP_STATUS(port), temp); 212 213 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); 214 } 215 216 static void intel_mst_enable_dp(struct intel_encoder *encoder) 217 { 218 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 219 struct intel_digital_port *intel_dig_port = intel_mst->primary; 220 struct intel_dp *intel_dp = &intel_dig_port->dp; 221 struct drm_device *dev = intel_dig_port->base.base.dev; 222 struct drm_i915_private *dev_priv = dev->dev_private; 223 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); 224 enum port port = intel_dig_port->port; 225 int ret; 226 227 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); 228 229 if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_ACT_SENT), 230 1)) 231 DRM_ERROR("Timed out waiting for ACT sent\n"); 232 233 ret = drm_dp_check_act_status(&intel_dp->mst_mgr); 234 235 ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr); 236 237 if (crtc->config->has_audio) { 238 DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", 239 pipe_name(crtc->pipe)); 240 intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO); 241 intel_audio_codec_enable(encoder); 242 } 243 } 244 245 static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, 246 enum pipe *pipe) 247 { 248 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 249 *pipe = intel_mst->pipe; 250 if (intel_mst->port) 251 return true; 252 return false; 253 } 254 255 static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder, 256 struct intel_crtc_state *pipe_config) 257 { 258 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 259 struct intel_digital_port *intel_dig_port = intel_mst->primary; 260 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); 261 struct drm_device *dev = encoder->base.dev; 262 struct drm_i915_private *dev_priv = dev->dev_private; 263 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder; 264 u32 temp, flags = 0; 265 266 pipe_config->has_dp_encoder = true; 267 268 pipe_config->has_audio = 269 intel_ddi_is_audio_enabled(dev_priv, crtc); 270 271 temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); 272 if (temp & TRANS_DDI_PHSYNC) 273 flags |= DRM_MODE_FLAG_PHSYNC; 274 else 275 flags |= DRM_MODE_FLAG_NHSYNC; 276 if (temp & TRANS_DDI_PVSYNC) 277 flags |= DRM_MODE_FLAG_PVSYNC; 278 else 279 flags |= DRM_MODE_FLAG_NVSYNC; 280 281 switch (temp & TRANS_DDI_BPC_MASK) { 282 case TRANS_DDI_BPC_6: 283 pipe_config->pipe_bpp = 18; 284 break; 285 case TRANS_DDI_BPC_8: 286 pipe_config->pipe_bpp = 24; 287 break; 288 case TRANS_DDI_BPC_10: 289 pipe_config->pipe_bpp = 30; 290 break; 291 case TRANS_DDI_BPC_12: 292 pipe_config->pipe_bpp = 36; 293 break; 294 default: 295 break; 296 } 297 pipe_config->base.adjusted_mode.flags |= flags; 298 299 pipe_config->lane_count = 300 ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1; 301 302 intel_dp_get_m_n(crtc, pipe_config); 303 304 intel_ddi_clock_get(&intel_dig_port->base, pipe_config); 305 } 306 307 static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector) 308 { 309 struct intel_connector *intel_connector = to_intel_connector(connector); 310 struct intel_dp *intel_dp = intel_connector->mst_port; 311 struct edid *edid; 312 int ret; 313 314 edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); 315 if (!edid) 316 return 0; 317 318 ret = intel_connector_update_modes(connector, edid); 319 kfree(edid); 320 321 return ret; 322 } 323 324 static enum drm_connector_status 325 intel_dp_mst_detect(struct drm_connector *connector, bool force) 326 { 327 struct intel_connector *intel_connector = to_intel_connector(connector); 328 struct intel_dp *intel_dp = intel_connector->mst_port; 329 330 return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, intel_connector->port); 331 } 332 333 static int 334 intel_dp_mst_set_property(struct drm_connector *connector, 335 struct drm_property *property, 336 uint64_t val) 337 { 338 return 0; 339 } 340 341 static void 342 intel_dp_mst_connector_destroy(struct drm_connector *connector) 343 { 344 struct intel_connector *intel_connector = to_intel_connector(connector); 345 346 if (!IS_ERR_OR_NULL(intel_connector->edid)) 347 kfree(intel_connector->edid); 348 349 drm_connector_cleanup(connector); 350 kfree(connector); 351 } 352 353 static const struct drm_connector_funcs intel_dp_mst_connector_funcs = { 354 .dpms = drm_atomic_helper_connector_dpms, 355 .detect = intel_dp_mst_detect, 356 .fill_modes = drm_helper_probe_single_connector_modes, 357 .set_property = intel_dp_mst_set_property, 358 .atomic_get_property = intel_connector_atomic_get_property, 359 .destroy = intel_dp_mst_connector_destroy, 360 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 361 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 362 }; 363 364 static int intel_dp_mst_get_modes(struct drm_connector *connector) 365 { 366 return intel_dp_mst_get_ddc_modes(connector); 367 } 368 369 static enum drm_mode_status 370 intel_dp_mst_mode_valid(struct drm_connector *connector, 371 struct drm_display_mode *mode) 372 { 373 /* TODO - validate mode against available PBN for link */ 374 if (mode->clock < 10000) 375 return MODE_CLOCK_LOW; 376 377 if (mode->flags & DRM_MODE_FLAG_DBLCLK) 378 return MODE_H_ILLEGAL; 379 380 return MODE_OK; 381 } 382 383 static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector, 384 struct drm_connector_state *state) 385 { 386 struct intel_connector *intel_connector = to_intel_connector(connector); 387 struct intel_dp *intel_dp = intel_connector->mst_port; 388 struct intel_crtc *crtc = to_intel_crtc(state->crtc); 389 390 return &intel_dp->mst_encoders[crtc->pipe]->base.base; 391 } 392 393 static struct drm_encoder *intel_mst_best_encoder(struct drm_connector *connector) 394 { 395 struct intel_connector *intel_connector = to_intel_connector(connector); 396 struct intel_dp *intel_dp = intel_connector->mst_port; 397 return &intel_dp->mst_encoders[0]->base.base; 398 } 399 400 static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = { 401 .get_modes = intel_dp_mst_get_modes, 402 .mode_valid = intel_dp_mst_mode_valid, 403 .atomic_best_encoder = intel_mst_atomic_best_encoder, 404 .best_encoder = intel_mst_best_encoder, 405 }; 406 #endif 407 408 static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder) 409 { 410 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); 411 412 drm_encoder_cleanup(encoder); 413 kfree(intel_mst); 414 } 415 416 static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = { 417 .destroy = intel_dp_mst_encoder_destroy, 418 }; 419 420 #if 0 421 static bool intel_dp_mst_get_hw_state(struct intel_connector *connector) 422 { 423 if (connector->encoder && connector->base.state->crtc) { 424 enum pipe pipe; 425 if (!connector->encoder->get_hw_state(connector->encoder, &pipe)) 426 return false; 427 return true; 428 } 429 return false; 430 } 431 432 static void intel_connector_add_to_fbdev(struct intel_connector *connector) 433 { 434 #ifdef CONFIG_DRM_FBDEV_EMULATION 435 struct drm_i915_private *dev_priv = to_i915(connector->base.dev); 436 437 if (dev_priv->fbdev) 438 drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper, 439 &connector->base); 440 #endif 441 } 442 443 static void intel_connector_remove_from_fbdev(struct intel_connector *connector) 444 { 445 #ifdef CONFIG_DRM_FBDEV_EMULATION 446 struct drm_i915_private *dev_priv = to_i915(connector->base.dev); 447 448 if (dev_priv->fbdev) 449 drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper, 450 &connector->base); 451 #endif 452 } 453 454 static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *pathprop) 455 { 456 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); 457 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); 458 struct drm_device *dev = intel_dig_port->base.base.dev; 459 struct intel_connector *intel_connector; 460 struct drm_connector *connector; 461 int i; 462 463 intel_connector = intel_connector_alloc(); 464 if (!intel_connector) 465 return NULL; 466 467 connector = &intel_connector->base; 468 drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort); 469 drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs); 470 471 intel_connector->unregister = intel_connector_unregister; 472 intel_connector->get_hw_state = intel_dp_mst_get_hw_state; 473 intel_connector->mst_port = intel_dp; 474 intel_connector->port = port; 475 476 for (i = PIPE_A; i <= PIPE_C; i++) { 477 drm_mode_connector_attach_encoder(&intel_connector->base, 478 &intel_dp->mst_encoders[i]->base.base); 479 } 480 intel_dp_add_properties(intel_dp, connector); 481 482 drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); 483 drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0); 484 485 drm_mode_connector_set_path_property(connector, pathprop); 486 return connector; 487 } 488 489 static void intel_dp_register_mst_connector(struct drm_connector *connector) 490 { 491 struct intel_connector *intel_connector = to_intel_connector(connector); 492 struct drm_device *dev = connector->dev; 493 drm_modeset_lock_all(dev); 494 intel_connector_add_to_fbdev(intel_connector); 495 drm_modeset_unlock_all(dev); 496 drm_connector_register(&intel_connector->base); 497 } 498 499 static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, 500 struct drm_connector *connector) 501 { 502 struct intel_connector *intel_connector = to_intel_connector(connector); 503 struct drm_device *dev = connector->dev; 504 505 /* need to nuke the connector */ 506 drm_modeset_lock_all(dev); 507 if (connector->state->crtc) { 508 struct drm_mode_set set; 509 int ret; 510 511 memset(&set, 0, sizeof(set)); 512 set.crtc = connector->state->crtc, 513 514 ret = drm_atomic_helper_set_config(&set); 515 516 WARN(ret, "Disabling mst crtc failed with %i\n", ret); 517 } 518 drm_modeset_unlock_all(dev); 519 520 intel_connector->unregister(intel_connector); 521 522 drm_modeset_lock_all(dev); 523 intel_connector_remove_from_fbdev(intel_connector); 524 drm_connector_cleanup(connector); 525 drm_modeset_unlock_all(dev); 526 527 kfree(intel_connector); 528 DRM_DEBUG_KMS("\n"); 529 } 530 531 static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) 532 { 533 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); 534 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); 535 struct drm_device *dev = intel_dig_port->base.base.dev; 536 537 drm_kms_helper_hotplug_event(dev); 538 } 539 540 static const struct drm_dp_mst_topology_cbs mst_cbs = { 541 .add_connector = intel_dp_add_mst_connector, 542 .register_connector = intel_dp_register_mst_connector, 543 .destroy_connector = intel_dp_destroy_mst_connector, 544 .hotplug = intel_dp_mst_hotplug, 545 }; 546 547 static struct intel_dp_mst_encoder * 548 intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe) 549 { 550 struct intel_dp_mst_encoder *intel_mst; 551 struct intel_encoder *intel_encoder; 552 struct drm_device *dev = intel_dig_port->base.base.dev; 553 554 intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL); 555 556 if (!intel_mst) 557 return NULL; 558 559 intel_mst->pipe = pipe; 560 intel_encoder = &intel_mst->base; 561 intel_mst->primary = intel_dig_port; 562 563 drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs, 564 DRM_MODE_ENCODER_DPMST, NULL); 565 566 intel_encoder->type = INTEL_OUTPUT_DP_MST; 567 intel_encoder->crtc_mask = 0x7; 568 intel_encoder->cloneable = 0; 569 570 intel_encoder->compute_config = intel_dp_mst_compute_config; 571 intel_encoder->disable = intel_mst_disable_dp; 572 intel_encoder->post_disable = intel_mst_post_disable_dp; 573 intel_encoder->pre_enable = intel_mst_pre_enable_dp; 574 intel_encoder->enable = intel_mst_enable_dp; 575 intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state; 576 intel_encoder->get_config = intel_dp_mst_enc_get_config; 577 578 return intel_mst; 579 580 } 581 582 static bool 583 intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port) 584 { 585 int i; 586 struct intel_dp *intel_dp = &intel_dig_port->dp; 587 588 for (i = PIPE_A; i <= PIPE_C; i++) 589 intel_dp->mst_encoders[i] = intel_dp_create_fake_mst_encoder(intel_dig_port, i); 590 return true; 591 } 592 #endif 593 594 int 595 intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id) 596 { 597 struct intel_dp *intel_dp = &intel_dig_port->dp; 598 #if 0 599 struct drm_device *dev = intel_dig_port->base.base.dev; 600 int ret; 601 602 intel_dp->can_mst = true; 603 intel_dp->mst_mgr.cbs = &mst_cbs; 604 605 /* create encoders */ 606 intel_dp_create_fake_mst_encoders(intel_dig_port); 607 ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev->dev, &intel_dp->aux, 16, 3, conn_base_id); 608 if (ret) { 609 intel_dp->can_mst = false; 610 return ret; 611 } 612 #endif 613 intel_dp->can_mst = false; 614 return 0; 615 } 616 617 void 618 intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port) 619 { 620 struct intel_dp *intel_dp = &intel_dig_port->dp; 621 622 if (!intel_dp->can_mst) 623 return; 624 625 #if 0 626 drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr); 627 #endif 628 /* encoders will get killed by normal cleanup */ 629 } 630