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 static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, 34 struct intel_crtc_state *pipe_config, 35 struct drm_connector_state *conn_state) 36 { 37 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 38 struct intel_digital_port *intel_dig_port = intel_mst->primary; 39 struct intel_dp *intel_dp = &intel_dig_port->dp; 40 struct intel_connector *connector = 41 to_intel_connector(conn_state->connector); 42 struct drm_atomic_state *state = pipe_config->base.state; 43 int bpp; 44 int lane_count, slots; 45 const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; 46 int mst_pbn; 47 bool reduce_m_n = drm_dp_has_quirk(&intel_dp->desc, 48 DP_DPCD_QUIRK_LIMITED_M_N); 49 50 pipe_config->has_pch_encoder = false; 51 bpp = 24; 52 if (intel_dp->compliance.test_data.bpc) { 53 bpp = intel_dp->compliance.test_data.bpc * 3; 54 DRM_DEBUG_KMS("Setting pipe bpp to %d\n", 55 bpp); 56 } 57 /* 58 * for MST we always configure max link bw - the spec doesn't 59 * seem to suggest we should do otherwise. 60 */ 61 lane_count = intel_dp_max_lane_count(intel_dp); 62 63 pipe_config->lane_count = lane_count; 64 65 pipe_config->pipe_bpp = bpp; 66 67 pipe_config->port_clock = intel_dp_max_link_rate(intel_dp); 68 69 if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, connector->port)) 70 pipe_config->has_audio = true; 71 72 mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp); 73 pipe_config->pbn = mst_pbn; 74 75 slots = drm_dp_atomic_find_vcpi_slots(state, &intel_dp->mst_mgr, 76 connector->port, mst_pbn); 77 if (slots < 0) { 78 DRM_DEBUG_KMS("failed finding vcpi slots:%d\n", slots); 79 return false; 80 } 81 82 intel_link_compute_m_n(bpp, lane_count, 83 adjusted_mode->crtc_clock, 84 pipe_config->port_clock, 85 &pipe_config->dp_m_n, 86 reduce_m_n); 87 88 pipe_config->dp_m_n.tu = slots; 89 90 return true; 91 } 92 93 static int intel_dp_mst_atomic_check(struct drm_connector *connector, 94 struct drm_connector_state *new_conn_state) 95 { 96 struct drm_atomic_state *state = new_conn_state->state; 97 struct drm_connector_state *old_conn_state; 98 struct drm_crtc *old_crtc; 99 struct drm_crtc_state *crtc_state; 100 int slots, ret = 0; 101 102 old_conn_state = drm_atomic_get_old_connector_state(state, connector); 103 old_crtc = old_conn_state->crtc; 104 if (!old_crtc) 105 return ret; 106 107 crtc_state = drm_atomic_get_new_crtc_state(state, old_crtc); 108 slots = to_intel_crtc_state(crtc_state)->dp_m_n.tu; 109 if (drm_atomic_crtc_needs_modeset(crtc_state) && slots > 0) { 110 struct drm_dp_mst_topology_mgr *mgr; 111 struct drm_encoder *old_encoder; 112 113 old_encoder = old_conn_state->best_encoder; 114 mgr = &enc_to_mst(old_encoder)->primary->dp.mst_mgr; 115 116 ret = drm_dp_atomic_release_vcpi_slots(state, mgr, slots); 117 if (ret) 118 DRM_DEBUG_KMS("failed releasing %d vcpi slots:%d\n", slots, ret); 119 else 120 to_intel_crtc_state(crtc_state)->dp_m_n.tu = 0; 121 } 122 return ret; 123 } 124 125 static void intel_mst_disable_dp(struct intel_encoder *encoder, 126 const struct intel_crtc_state *old_crtc_state, 127 const struct drm_connector_state *old_conn_state) 128 { 129 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 130 struct intel_digital_port *intel_dig_port = intel_mst->primary; 131 struct intel_dp *intel_dp = &intel_dig_port->dp; 132 struct intel_connector *connector = 133 to_intel_connector(old_conn_state->connector); 134 int ret; 135 136 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 137 138 drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port); 139 140 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); 141 if (ret) { 142 DRM_ERROR("failed to update payload %d\n", ret); 143 } 144 if (old_crtc_state->has_audio) 145 intel_audio_codec_disable(encoder); 146 } 147 148 static void intel_mst_post_disable_dp(struct intel_encoder *encoder, 149 const struct intel_crtc_state *old_crtc_state, 150 const struct drm_connector_state *old_conn_state) 151 { 152 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 153 struct intel_digital_port *intel_dig_port = intel_mst->primary; 154 struct intel_dp *intel_dp = &intel_dig_port->dp; 155 struct intel_connector *connector = 156 to_intel_connector(old_conn_state->connector); 157 158 /* this can fail */ 159 drm_dp_check_act_status(&intel_dp->mst_mgr); 160 /* and this can also fail */ 161 drm_dp_update_payload_part2(&intel_dp->mst_mgr); 162 163 drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port); 164 165 /* 166 * Power down mst path before disabling the port, otherwise we end 167 * up getting interrupts from the sink upon detecting link loss. 168 */ 169 drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, 170 false); 171 172 intel_dp->active_mst_links--; 173 174 intel_mst->connector = NULL; 175 if (intel_dp->active_mst_links == 0) { 176 intel_dig_port->base.post_disable(&intel_dig_port->base, 177 NULL, NULL); 178 } 179 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 180 } 181 182 static void intel_mst_pre_enable_dp(struct intel_encoder *encoder, 183 const struct intel_crtc_state *pipe_config, 184 const struct drm_connector_state *conn_state) 185 { 186 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 187 struct intel_digital_port *intel_dig_port = intel_mst->primary; 188 struct intel_dp *intel_dp = &intel_dig_port->dp; 189 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 190 enum port port = intel_dig_port->port; 191 struct intel_connector *connector = 192 to_intel_connector(conn_state->connector); 193 int ret; 194 uint32_t temp; 195 196 /* MST encoders are bound to a crtc, not to a connector, 197 * force the mapping here for get_hw_state. 198 */ 199 connector->encoder = encoder; 200 intel_mst->connector = connector; 201 202 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 203 204 drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, true); 205 if (intel_dp->active_mst_links == 0) 206 intel_dig_port->base.pre_enable(&intel_dig_port->base, 207 pipe_config, NULL); 208 209 ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, 210 connector->port, 211 pipe_config->pbn, 212 pipe_config->dp_m_n.tu); 213 if (ret == false) { 214 DRM_ERROR("failed to allocate vcpi\n"); 215 return; 216 } 217 218 219 intel_dp->active_mst_links++; 220 temp = I915_READ(DP_TP_STATUS(port)); 221 I915_WRITE(DP_TP_STATUS(port), temp); 222 223 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); 224 } 225 226 static void intel_mst_enable_dp(struct intel_encoder *encoder, 227 const struct intel_crtc_state *pipe_config, 228 const struct drm_connector_state *conn_state) 229 { 230 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 231 struct intel_digital_port *intel_dig_port = intel_mst->primary; 232 struct intel_dp *intel_dp = &intel_dig_port->dp; 233 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 234 enum port port = intel_dig_port->port; 235 int ret; 236 237 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 238 239 if (intel_wait_for_register(dev_priv, 240 DP_TP_STATUS(port), 241 DP_TP_STATUS_ACT_SENT, 242 DP_TP_STATUS_ACT_SENT, 243 1)) 244 DRM_ERROR("Timed out waiting for ACT sent\n"); 245 246 ret = drm_dp_check_act_status(&intel_dp->mst_mgr); 247 248 ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr); 249 if (pipe_config->has_audio) 250 intel_audio_codec_enable(encoder, pipe_config, conn_state); 251 } 252 253 static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, 254 enum i915_pipe *pipe) 255 { 256 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 257 *pipe = intel_mst->pipe; 258 if (intel_mst->connector) 259 return true; 260 return false; 261 } 262 263 static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder, 264 struct intel_crtc_state *pipe_config) 265 { 266 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 267 struct intel_digital_port *intel_dig_port = intel_mst->primary; 268 struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc); 269 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 270 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder; 271 u32 temp, flags = 0; 272 273 pipe_config->has_audio = 274 intel_ddi_is_audio_enabled(dev_priv, crtc); 275 276 temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); 277 if (temp & TRANS_DDI_PHSYNC) 278 flags |= DRM_MODE_FLAG_PHSYNC; 279 else 280 flags |= DRM_MODE_FLAG_NHSYNC; 281 if (temp & TRANS_DDI_PVSYNC) 282 flags |= DRM_MODE_FLAG_PVSYNC; 283 else 284 flags |= DRM_MODE_FLAG_NVSYNC; 285 286 switch (temp & TRANS_DDI_BPC_MASK) { 287 case TRANS_DDI_BPC_6: 288 pipe_config->pipe_bpp = 18; 289 break; 290 case TRANS_DDI_BPC_8: 291 pipe_config->pipe_bpp = 24; 292 break; 293 case TRANS_DDI_BPC_10: 294 pipe_config->pipe_bpp = 30; 295 break; 296 case TRANS_DDI_BPC_12: 297 pipe_config->pipe_bpp = 36; 298 break; 299 default: 300 break; 301 } 302 pipe_config->base.adjusted_mode.flags |= flags; 303 304 pipe_config->lane_count = 305 ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1; 306 307 intel_dp_get_m_n(crtc, pipe_config); 308 309 intel_ddi_clock_get(&intel_dig_port->base, pipe_config); 310 } 311 312 static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector) 313 { 314 struct intel_connector *intel_connector = to_intel_connector(connector); 315 struct intel_dp *intel_dp = intel_connector->mst_port; 316 struct edid *edid; 317 int ret; 318 319 if (!intel_dp) { 320 return intel_connector_update_modes(connector, NULL); 321 } 322 323 edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); 324 ret = intel_connector_update_modes(connector, edid); 325 kfree(edid); 326 327 return ret; 328 } 329 330 static enum drm_connector_status 331 intel_dp_mst_detect(struct drm_connector *connector, bool force) 332 { 333 struct intel_connector *intel_connector = to_intel_connector(connector); 334 struct intel_dp *intel_dp = intel_connector->mst_port; 335 336 if (!intel_dp) 337 return connector_status_disconnected; 338 return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, intel_connector->port); 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 .detect = intel_dp_mst_detect, 355 .fill_modes = drm_helper_probe_single_connector_modes, 356 .late_register = intel_connector_register, 357 .early_unregister = intel_connector_unregister, 358 .destroy = intel_dp_mst_connector_destroy, 359 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 360 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 361 }; 362 363 static int intel_dp_mst_get_modes(struct drm_connector *connector) 364 { 365 return intel_dp_mst_get_ddc_modes(connector); 366 } 367 368 static enum drm_mode_status 369 intel_dp_mst_mode_valid(struct drm_connector *connector, 370 struct drm_display_mode *mode) 371 { 372 struct intel_connector *intel_connector = to_intel_connector(connector); 373 struct intel_dp *intel_dp = intel_connector->mst_port; 374 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; 375 int bpp = 24; /* MST uses fixed bpp */ 376 int max_rate, mode_rate, max_lanes, max_link_clock; 377 378 if (!intel_dp) 379 return MODE_ERROR; 380 381 max_link_clock = intel_dp_max_link_rate(intel_dp); 382 max_lanes = intel_dp_max_lane_count(intel_dp); 383 384 max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); 385 mode_rate = intel_dp_link_required(mode->clock, bpp); 386 387 /* TODO - validate mode against available PBN for link */ 388 if (mode->clock < 10000) 389 return MODE_CLOCK_LOW; 390 391 if (mode->flags & DRM_MODE_FLAG_DBLCLK) 392 return MODE_H_ILLEGAL; 393 394 if (mode_rate > max_rate || mode->clock > max_dotclk) 395 return MODE_CLOCK_HIGH; 396 397 return MODE_OK; 398 } 399 400 static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector, 401 struct drm_connector_state *state) 402 { 403 struct intel_connector *intel_connector = to_intel_connector(connector); 404 struct intel_dp *intel_dp = intel_connector->mst_port; 405 struct intel_crtc *crtc = to_intel_crtc(state->crtc); 406 407 if (!intel_dp) 408 return NULL; 409 return &intel_dp->mst_encoders[crtc->pipe]->base.base; 410 } 411 412 static struct drm_encoder *intel_mst_best_encoder(struct drm_connector *connector) 413 { 414 struct intel_connector *intel_connector = to_intel_connector(connector); 415 struct intel_dp *intel_dp = intel_connector->mst_port; 416 if (!intel_dp) 417 return NULL; 418 return &intel_dp->mst_encoders[0]->base.base; 419 } 420 421 static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = { 422 .get_modes = intel_dp_mst_get_modes, 423 .mode_valid = intel_dp_mst_mode_valid, 424 .atomic_best_encoder = intel_mst_atomic_best_encoder, 425 .best_encoder = intel_mst_best_encoder, 426 .atomic_check = intel_dp_mst_atomic_check, 427 }; 428 429 static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder) 430 { 431 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); 432 433 drm_encoder_cleanup(encoder); 434 kfree(intel_mst); 435 } 436 437 static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = { 438 .destroy = intel_dp_mst_encoder_destroy, 439 }; 440 441 static bool intel_dp_mst_get_hw_state(struct intel_connector *connector) 442 { 443 if (connector->encoder && connector->base.state->crtc) { 444 enum i915_pipe pipe; 445 if (!connector->encoder->get_hw_state(connector->encoder, &pipe)) 446 return false; 447 return true; 448 } 449 return false; 450 } 451 452 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) 453 { 454 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); 455 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); 456 struct drm_device *dev = intel_dig_port->base.base.dev; 457 struct drm_i915_private *dev_priv = to_i915(dev); 458 struct intel_connector *intel_connector; 459 struct drm_connector *connector; 460 enum i915_pipe pipe; 461 int ret; 462 463 intel_connector = intel_connector_alloc(); 464 if (!intel_connector) 465 return NULL; 466 467 connector = &intel_connector->base; 468 ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, 469 DRM_MODE_CONNECTOR_DisplayPort); 470 if (ret) { 471 intel_connector_free(intel_connector); 472 return NULL; 473 } 474 475 drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs); 476 477 intel_connector->get_hw_state = intel_dp_mst_get_hw_state; 478 intel_connector->mst_port = intel_dp; 479 intel_connector->port = port; 480 481 for_each_pipe(dev_priv, pipe) { 482 struct drm_encoder *enc = 483 &intel_dp->mst_encoders[pipe]->base.base; 484 485 ret = drm_mode_connector_attach_encoder(&intel_connector->base, 486 enc); 487 if (ret) 488 goto err; 489 } 490 491 drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); 492 drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0); 493 494 ret = drm_mode_connector_set_path_property(connector, pathprop); 495 if (ret) 496 goto err; 497 498 return connector; 499 500 err: 501 drm_connector_cleanup(connector); 502 return NULL; 503 } 504 505 static void intel_dp_register_mst_connector(struct drm_connector *connector) 506 { 507 struct drm_i915_private *dev_priv = to_i915(connector->dev); 508 509 if (dev_priv->fbdev) 510 drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper, 511 connector); 512 513 drm_connector_register(connector); 514 } 515 516 static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, 517 struct drm_connector *connector) 518 { 519 struct intel_connector *intel_connector = to_intel_connector(connector); 520 struct drm_i915_private *dev_priv = to_i915(connector->dev); 521 522 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, connector->name); 523 drm_connector_unregister(connector); 524 525 if (dev_priv->fbdev) 526 drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper, 527 connector); 528 /* prevent race with the check in ->detect */ 529 drm_modeset_lock(&connector->dev->mode_config.connection_mutex, NULL); 530 intel_connector->mst_port = NULL; 531 drm_modeset_unlock(&connector->dev->mode_config.connection_mutex); 532 533 drm_connector_unreference(connector); 534 } 535 536 static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) 537 { 538 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); 539 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); 540 struct drm_device *dev = intel_dig_port->base.base.dev; 541 542 drm_kms_helper_hotplug_event(dev); 543 } 544 545 static const struct drm_dp_mst_topology_cbs mst_cbs = { 546 .add_connector = intel_dp_add_mst_connector, 547 .register_connector = intel_dp_register_mst_connector, 548 .destroy_connector = intel_dp_destroy_mst_connector, 549 .hotplug = intel_dp_mst_hotplug, 550 }; 551 552 static struct intel_dp_mst_encoder * 553 intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum i915_pipe pipe) 554 { 555 struct intel_dp_mst_encoder *intel_mst; 556 struct intel_encoder *intel_encoder; 557 struct drm_device *dev = intel_dig_port->base.base.dev; 558 559 intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL); 560 561 if (!intel_mst) 562 return NULL; 563 564 intel_mst->pipe = pipe; 565 intel_encoder = &intel_mst->base; 566 intel_mst->primary = intel_dig_port; 567 568 drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs, 569 DRM_MODE_ENCODER_DPMST, "DP-MST %c", pipe_name(pipe)); 570 571 intel_encoder->type = INTEL_OUTPUT_DP_MST; 572 intel_encoder->power_domain = intel_dig_port->base.power_domain; 573 intel_encoder->port = intel_dig_port->port; 574 intel_encoder->crtc_mask = 0x7; 575 intel_encoder->cloneable = 0; 576 577 intel_encoder->compute_config = intel_dp_mst_compute_config; 578 intel_encoder->disable = intel_mst_disable_dp; 579 intel_encoder->post_disable = intel_mst_post_disable_dp; 580 intel_encoder->pre_enable = intel_mst_pre_enable_dp; 581 intel_encoder->enable = intel_mst_enable_dp; 582 intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state; 583 intel_encoder->get_config = intel_dp_mst_enc_get_config; 584 585 return intel_mst; 586 587 } 588 589 static bool 590 intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port) 591 { 592 struct intel_dp *intel_dp = &intel_dig_port->dp; 593 struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); 594 enum i915_pipe pipe; 595 596 for_each_pipe(dev_priv, pipe) 597 intel_dp->mst_encoders[pipe] = intel_dp_create_fake_mst_encoder(intel_dig_port, pipe); 598 return true; 599 } 600 601 int 602 intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id) 603 { 604 struct intel_dp *intel_dp = &intel_dig_port->dp; 605 struct drm_device *dev = intel_dig_port->base.base.dev; 606 int ret; 607 608 intel_dp->can_mst = true; 609 intel_dp->mst_mgr.cbs = &mst_cbs; 610 611 /* create encoders */ 612 intel_dp_create_fake_mst_encoders(intel_dig_port); 613 ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev, 614 &intel_dp->aux, 16, 3, conn_base_id); 615 if (ret) { 616 intel_dp->can_mst = false; 617 return ret; 618 } 619 return 0; 620 } 621 622 void 623 intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port) 624 { 625 struct intel_dp *intel_dp = &intel_dig_port->dp; 626 627 if (!intel_dp->can_mst) 628 return; 629 630 drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr); 631 /* encoders will get killed by normal cleanup */ 632 } 633