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/drm_atomic_helper.h> 27 #include <drm/drm_edid.h> 28 #include <drm/drm_probe_helper.h> 29 30 #include "i915_drv.h" 31 #include "intel_atomic.h" 32 #include "intel_audio.h" 33 #include "intel_connector.h" 34 #include "intel_ddi.h" 35 #include "intel_dp.h" 36 #include "intel_dp_mst.h" 37 #include "intel_dpio_phy.h" 38 #include "intel_drv.h" 39 40 static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder, 41 struct intel_crtc_state *crtc_state, 42 struct drm_connector_state *conn_state, 43 struct link_config_limits *limits) 44 { 45 struct drm_atomic_state *state = crtc_state->base.state; 46 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 47 struct intel_dp *intel_dp = &intel_mst->primary->dp; 48 struct intel_connector *connector = 49 to_intel_connector(conn_state->connector); 50 const struct drm_display_mode *adjusted_mode = 51 &crtc_state->base.adjusted_mode; 52 void *port = connector->port; 53 bool constant_n = drm_dp_has_quirk(&intel_dp->desc, 54 DP_DPCD_QUIRK_CONSTANT_N); 55 int bpp, slots = -EINVAL; 56 57 crtc_state->lane_count = limits->max_lane_count; 58 crtc_state->port_clock = limits->max_clock; 59 60 for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) { 61 crtc_state->pipe_bpp = bpp; 62 63 crtc_state->pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, 64 crtc_state->pipe_bpp); 65 66 slots = drm_dp_atomic_find_vcpi_slots(state, &intel_dp->mst_mgr, 67 port, crtc_state->pbn); 68 if (slots == -EDEADLK) 69 return slots; 70 if (slots >= 0) 71 break; 72 } 73 74 if (slots < 0) { 75 DRM_DEBUG_KMS("failed finding vcpi slots:%d\n", slots); 76 return slots; 77 } 78 79 intel_link_compute_m_n(crtc_state->pipe_bpp, 80 crtc_state->lane_count, 81 adjusted_mode->crtc_clock, 82 crtc_state->port_clock, 83 &crtc_state->dp_m_n, 84 constant_n); 85 crtc_state->dp_m_n.tu = slots; 86 87 return 0; 88 } 89 90 static int intel_dp_mst_compute_config(struct intel_encoder *encoder, 91 struct intel_crtc_state *pipe_config, 92 struct drm_connector_state *conn_state) 93 { 94 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 95 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 96 struct intel_dp *intel_dp = &intel_mst->primary->dp; 97 struct intel_connector *connector = 98 to_intel_connector(conn_state->connector); 99 struct intel_digital_connector_state *intel_conn_state = 100 to_intel_digital_connector_state(conn_state); 101 const struct drm_display_mode *adjusted_mode = 102 &pipe_config->base.adjusted_mode; 103 void *port = connector->port; 104 struct link_config_limits limits; 105 int ret; 106 107 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) 108 return -EINVAL; 109 110 pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; 111 pipe_config->has_pch_encoder = false; 112 113 if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO) 114 pipe_config->has_audio = 115 drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, port); 116 else 117 pipe_config->has_audio = 118 intel_conn_state->force_audio == HDMI_AUDIO_ON; 119 120 /* 121 * for MST we always configure max link bw - the spec doesn't 122 * seem to suggest we should do otherwise. 123 */ 124 limits.min_clock = 125 limits.max_clock = intel_dp_max_link_rate(intel_dp); 126 127 limits.min_lane_count = 128 limits.max_lane_count = intel_dp_max_lane_count(intel_dp); 129 130 limits.min_bpp = intel_dp_min_bpp(pipe_config); 131 limits.max_bpp = pipe_config->pipe_bpp; 132 133 intel_dp_adjust_compliance_config(intel_dp, pipe_config, &limits); 134 135 ret = intel_dp_mst_compute_link_config(encoder, pipe_config, 136 conn_state, &limits); 137 if (ret) 138 return ret; 139 140 pipe_config->limited_color_range = 141 intel_dp_limited_color_range(pipe_config, conn_state); 142 143 if (IS_GEN9_LP(dev_priv)) 144 pipe_config->lane_lat_optim_mask = 145 bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count); 146 147 intel_ddi_compute_min_voltage_level(dev_priv, pipe_config); 148 149 return 0; 150 } 151 152 static int 153 intel_dp_mst_atomic_check(struct drm_connector *connector, 154 struct drm_atomic_state *state) 155 { 156 struct drm_connector_state *new_conn_state = 157 drm_atomic_get_new_connector_state(state, connector); 158 struct drm_connector_state *old_conn_state = 159 drm_atomic_get_old_connector_state(state, connector); 160 struct intel_connector *intel_connector = 161 to_intel_connector(connector); 162 struct drm_crtc *new_crtc = new_conn_state->crtc; 163 struct drm_crtc_state *crtc_state; 164 struct drm_dp_mst_topology_mgr *mgr; 165 int ret; 166 167 ret = intel_digital_connector_atomic_check(connector, state); 168 if (ret) 169 return ret; 170 171 if (!old_conn_state->crtc) 172 return 0; 173 174 /* We only want to free VCPI if this state disables the CRTC on this 175 * connector 176 */ 177 if (new_crtc) { 178 crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc); 179 180 if (!crtc_state || 181 !drm_atomic_crtc_needs_modeset(crtc_state) || 182 crtc_state->enable) 183 return 0; 184 } 185 186 mgr = &enc_to_mst(old_conn_state->best_encoder)->primary->dp.mst_mgr; 187 ret = drm_dp_atomic_release_vcpi_slots(state, mgr, 188 intel_connector->port); 189 190 return ret; 191 } 192 193 static void intel_mst_disable_dp(struct intel_encoder *encoder, 194 const struct intel_crtc_state *old_crtc_state, 195 const struct drm_connector_state *old_conn_state) 196 { 197 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 198 struct intel_digital_port *intel_dig_port = intel_mst->primary; 199 struct intel_dp *intel_dp = &intel_dig_port->dp; 200 struct intel_connector *connector = 201 to_intel_connector(old_conn_state->connector); 202 int ret; 203 204 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 205 206 drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port); 207 208 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); 209 if (ret) { 210 DRM_ERROR("failed to update payload %d\n", ret); 211 } 212 if (old_crtc_state->has_audio) 213 intel_audio_codec_disable(encoder, 214 old_crtc_state, old_conn_state); 215 } 216 217 static void intel_mst_post_disable_dp(struct intel_encoder *encoder, 218 const struct intel_crtc_state *old_crtc_state, 219 const struct drm_connector_state *old_conn_state) 220 { 221 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 222 struct intel_digital_port *intel_dig_port = intel_mst->primary; 223 struct intel_dp *intel_dp = &intel_dig_port->dp; 224 struct intel_connector *connector = 225 to_intel_connector(old_conn_state->connector); 226 227 intel_ddi_disable_pipe_clock(old_crtc_state); 228 229 /* this can fail */ 230 drm_dp_check_act_status(&intel_dp->mst_mgr); 231 /* and this can also fail */ 232 drm_dp_update_payload_part2(&intel_dp->mst_mgr); 233 234 drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port); 235 236 /* 237 * Power down mst path before disabling the port, otherwise we end 238 * up getting interrupts from the sink upon detecting link loss. 239 */ 240 drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, 241 false); 242 243 intel_dp->active_mst_links--; 244 245 intel_mst->connector = NULL; 246 if (intel_dp->active_mst_links == 0) { 247 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); 248 intel_dig_port->base.post_disable(&intel_dig_port->base, 249 old_crtc_state, NULL); 250 } 251 252 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 253 } 254 255 static void intel_mst_pre_pll_enable_dp(struct intel_encoder *encoder, 256 const struct intel_crtc_state *pipe_config, 257 const struct drm_connector_state *conn_state) 258 { 259 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 260 struct intel_digital_port *intel_dig_port = intel_mst->primary; 261 struct intel_dp *intel_dp = &intel_dig_port->dp; 262 263 if (intel_dp->active_mst_links == 0) 264 intel_dig_port->base.pre_pll_enable(&intel_dig_port->base, 265 pipe_config, NULL); 266 } 267 268 static void intel_mst_post_pll_disable_dp(struct intel_encoder *encoder, 269 const struct intel_crtc_state *old_crtc_state, 270 const struct drm_connector_state *old_conn_state) 271 { 272 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 273 struct intel_digital_port *intel_dig_port = intel_mst->primary; 274 struct intel_dp *intel_dp = &intel_dig_port->dp; 275 276 if (intel_dp->active_mst_links == 0) 277 intel_dig_port->base.post_pll_disable(&intel_dig_port->base, 278 old_crtc_state, 279 old_conn_state); 280 } 281 282 static void intel_mst_pre_enable_dp(struct intel_encoder *encoder, 283 const struct intel_crtc_state *pipe_config, 284 const struct drm_connector_state *conn_state) 285 { 286 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 287 struct intel_digital_port *intel_dig_port = intel_mst->primary; 288 struct intel_dp *intel_dp = &intel_dig_port->dp; 289 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 290 enum port port = intel_dig_port->base.port; 291 struct intel_connector *connector = 292 to_intel_connector(conn_state->connector); 293 int ret; 294 u32 temp; 295 296 /* MST encoders are bound to a crtc, not to a connector, 297 * force the mapping here for get_hw_state. 298 */ 299 connector->encoder = encoder; 300 intel_mst->connector = connector; 301 302 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 303 304 if (intel_dp->active_mst_links == 0) 305 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); 306 307 drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, true); 308 309 if (intel_dp->active_mst_links == 0) 310 intel_dig_port->base.pre_enable(&intel_dig_port->base, 311 pipe_config, NULL); 312 313 ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, 314 connector->port, 315 pipe_config->pbn, 316 pipe_config->dp_m_n.tu); 317 if (!ret) 318 DRM_ERROR("failed to allocate vcpi\n"); 319 320 intel_dp->active_mst_links++; 321 temp = I915_READ(DP_TP_STATUS(port)); 322 I915_WRITE(DP_TP_STATUS(port), temp); 323 324 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); 325 326 intel_ddi_enable_pipe_clock(pipe_config); 327 } 328 329 static void intel_mst_enable_dp(struct intel_encoder *encoder, 330 const struct intel_crtc_state *pipe_config, 331 const struct drm_connector_state *conn_state) 332 { 333 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 334 struct intel_digital_port *intel_dig_port = intel_mst->primary; 335 struct intel_dp *intel_dp = &intel_dig_port->dp; 336 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 337 enum port port = intel_dig_port->base.port; 338 339 DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); 340 341 if (intel_wait_for_register(&dev_priv->uncore, 342 DP_TP_STATUS(port), 343 DP_TP_STATUS_ACT_SENT, 344 DP_TP_STATUS_ACT_SENT, 345 1)) 346 DRM_ERROR("Timed out waiting for ACT sent\n"); 347 348 drm_dp_check_act_status(&intel_dp->mst_mgr); 349 350 drm_dp_update_payload_part2(&intel_dp->mst_mgr); 351 if (pipe_config->has_audio) 352 intel_audio_codec_enable(encoder, pipe_config, conn_state); 353 } 354 355 static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, 356 enum pipe *pipe) 357 { 358 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 359 *pipe = intel_mst->pipe; 360 if (intel_mst->connector) 361 return true; 362 return false; 363 } 364 365 static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder, 366 struct intel_crtc_state *pipe_config) 367 { 368 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); 369 struct intel_digital_port *intel_dig_port = intel_mst->primary; 370 371 intel_ddi_get_config(&intel_dig_port->base, pipe_config); 372 } 373 374 static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector) 375 { 376 struct intel_connector *intel_connector = to_intel_connector(connector); 377 struct intel_dp *intel_dp = intel_connector->mst_port; 378 struct edid *edid; 379 int ret; 380 381 if (drm_connector_is_unregistered(connector)) 382 return intel_connector_update_modes(connector, NULL); 383 384 edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); 385 ret = intel_connector_update_modes(connector, edid); 386 kfree(edid); 387 388 return ret; 389 } 390 391 static enum drm_connector_status 392 intel_dp_mst_detect(struct drm_connector *connector, bool force) 393 { 394 struct intel_connector *intel_connector = to_intel_connector(connector); 395 struct intel_dp *intel_dp = intel_connector->mst_port; 396 397 if (drm_connector_is_unregistered(connector)) 398 return connector_status_disconnected; 399 return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, 400 intel_connector->port); 401 } 402 403 static const struct drm_connector_funcs intel_dp_mst_connector_funcs = { 404 .detect = intel_dp_mst_detect, 405 .fill_modes = drm_helper_probe_single_connector_modes, 406 .atomic_get_property = intel_digital_connector_atomic_get_property, 407 .atomic_set_property = intel_digital_connector_atomic_set_property, 408 .late_register = intel_connector_register, 409 .early_unregister = intel_connector_unregister, 410 .destroy = intel_connector_destroy, 411 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 412 .atomic_duplicate_state = intel_digital_connector_duplicate_state, 413 }; 414 415 static int intel_dp_mst_get_modes(struct drm_connector *connector) 416 { 417 return intel_dp_mst_get_ddc_modes(connector); 418 } 419 420 static enum drm_mode_status 421 intel_dp_mst_mode_valid(struct drm_connector *connector, 422 struct drm_display_mode *mode) 423 { 424 struct intel_connector *intel_connector = to_intel_connector(connector); 425 struct intel_dp *intel_dp = intel_connector->mst_port; 426 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; 427 int max_rate, mode_rate, max_lanes, max_link_clock; 428 429 if (drm_connector_is_unregistered(connector)) 430 return MODE_ERROR; 431 432 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 433 return MODE_NO_DBLESCAN; 434 435 max_link_clock = intel_dp_max_link_rate(intel_dp); 436 max_lanes = intel_dp_max_lane_count(intel_dp); 437 438 max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); 439 mode_rate = intel_dp_link_required(mode->clock, 18); 440 441 /* TODO - validate mode against available PBN for link */ 442 if (mode->clock < 10000) 443 return MODE_CLOCK_LOW; 444 445 if (mode->flags & DRM_MODE_FLAG_DBLCLK) 446 return MODE_H_ILLEGAL; 447 448 if (mode_rate > max_rate || mode->clock > max_dotclk) 449 return MODE_CLOCK_HIGH; 450 451 return MODE_OK; 452 } 453 454 static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector, 455 struct drm_connector_state *state) 456 { 457 struct intel_connector *intel_connector = to_intel_connector(connector); 458 struct intel_dp *intel_dp = intel_connector->mst_port; 459 struct intel_crtc *crtc = to_intel_crtc(state->crtc); 460 461 return &intel_dp->mst_encoders[crtc->pipe]->base.base; 462 } 463 464 static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = { 465 .get_modes = intel_dp_mst_get_modes, 466 .mode_valid = intel_dp_mst_mode_valid, 467 .atomic_best_encoder = intel_mst_atomic_best_encoder, 468 .atomic_check = intel_dp_mst_atomic_check, 469 }; 470 471 static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder) 472 { 473 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); 474 475 drm_encoder_cleanup(encoder); 476 kfree(intel_mst); 477 } 478 479 static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = { 480 .destroy = intel_dp_mst_encoder_destroy, 481 }; 482 483 static bool intel_dp_mst_get_hw_state(struct intel_connector *connector) 484 { 485 if (connector->encoder && connector->base.state->crtc) { 486 enum pipe pipe; 487 if (!connector->encoder->get_hw_state(connector->encoder, &pipe)) 488 return false; 489 return true; 490 } 491 return false; 492 } 493 494 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) 495 { 496 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); 497 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); 498 struct drm_device *dev = intel_dig_port->base.base.dev; 499 struct drm_i915_private *dev_priv = to_i915(dev); 500 struct intel_connector *intel_connector; 501 struct drm_connector *connector; 502 enum pipe pipe; 503 int ret; 504 505 intel_connector = intel_connector_alloc(); 506 if (!intel_connector) 507 return NULL; 508 509 intel_connector->get_hw_state = intel_dp_mst_get_hw_state; 510 intel_connector->mst_port = intel_dp; 511 intel_connector->port = port; 512 drm_dp_mst_get_port_malloc(port); 513 514 connector = &intel_connector->base; 515 ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, 516 DRM_MODE_CONNECTOR_DisplayPort); 517 if (ret) { 518 intel_connector_free(intel_connector); 519 return NULL; 520 } 521 522 drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs); 523 524 for_each_pipe(dev_priv, pipe) { 525 struct drm_encoder *enc = 526 &intel_dp->mst_encoders[pipe]->base.base; 527 528 ret = drm_connector_attach_encoder(&intel_connector->base, enc); 529 if (ret) 530 goto err; 531 } 532 533 drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); 534 drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0); 535 536 ret = drm_connector_set_path_property(connector, pathprop); 537 if (ret) 538 goto err; 539 540 intel_attach_force_audio_property(connector); 541 intel_attach_broadcast_rgb_property(connector); 542 drm_connector_attach_max_bpc_property(connector, 6, 12); 543 544 return connector; 545 546 err: 547 drm_connector_cleanup(connector); 548 return NULL; 549 } 550 551 static void intel_dp_register_mst_connector(struct drm_connector *connector) 552 { 553 struct drm_i915_private *dev_priv = to_i915(connector->dev); 554 555 if (dev_priv->fbdev) 556 drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper, 557 connector); 558 559 drm_connector_register(connector); 560 } 561 562 static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, 563 struct drm_connector *connector) 564 { 565 struct drm_i915_private *dev_priv = to_i915(connector->dev); 566 567 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, connector->name); 568 drm_connector_unregister(connector); 569 570 if (dev_priv->fbdev) 571 drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper, 572 connector); 573 574 drm_connector_put(connector); 575 } 576 577 static const struct drm_dp_mst_topology_cbs mst_cbs = { 578 .add_connector = intel_dp_add_mst_connector, 579 .register_connector = intel_dp_register_mst_connector, 580 .destroy_connector = intel_dp_destroy_mst_connector, 581 }; 582 583 static struct intel_dp_mst_encoder * 584 intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe) 585 { 586 struct intel_dp_mst_encoder *intel_mst; 587 struct intel_encoder *intel_encoder; 588 struct drm_device *dev = intel_dig_port->base.base.dev; 589 590 intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL); 591 592 if (!intel_mst) 593 return NULL; 594 595 intel_mst->pipe = pipe; 596 intel_encoder = &intel_mst->base; 597 intel_mst->primary = intel_dig_port; 598 599 drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs, 600 DRM_MODE_ENCODER_DPMST, "DP-MST %c", pipe_name(pipe)); 601 602 intel_encoder->type = INTEL_OUTPUT_DP_MST; 603 intel_encoder->power_domain = intel_dig_port->base.power_domain; 604 intel_encoder->port = intel_dig_port->base.port; 605 intel_encoder->crtc_mask = 0x7; 606 intel_encoder->cloneable = 0; 607 608 intel_encoder->compute_config = intel_dp_mst_compute_config; 609 intel_encoder->disable = intel_mst_disable_dp; 610 intel_encoder->post_disable = intel_mst_post_disable_dp; 611 intel_encoder->pre_pll_enable = intel_mst_pre_pll_enable_dp; 612 intel_encoder->post_pll_disable = intel_mst_post_pll_disable_dp; 613 intel_encoder->pre_enable = intel_mst_pre_enable_dp; 614 intel_encoder->enable = intel_mst_enable_dp; 615 intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state; 616 intel_encoder->get_config = intel_dp_mst_enc_get_config; 617 618 return intel_mst; 619 620 } 621 622 static bool 623 intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port) 624 { 625 struct intel_dp *intel_dp = &intel_dig_port->dp; 626 struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); 627 enum pipe pipe; 628 629 for_each_pipe(dev_priv, pipe) 630 intel_dp->mst_encoders[pipe] = intel_dp_create_fake_mst_encoder(intel_dig_port, pipe); 631 return true; 632 } 633 634 int 635 intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id) 636 { 637 struct intel_dp *intel_dp = &intel_dig_port->dp; 638 struct drm_device *dev = intel_dig_port->base.base.dev; 639 int ret; 640 641 intel_dp->can_mst = true; 642 intel_dp->mst_mgr.cbs = &mst_cbs; 643 644 /* create encoders */ 645 intel_dp_create_fake_mst_encoders(intel_dig_port); 646 ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev, 647 &intel_dp->aux, 16, 3, conn_base_id); 648 if (ret) { 649 intel_dp->can_mst = false; 650 return ret; 651 } 652 return 0; 653 } 654 655 void 656 intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port) 657 { 658 struct intel_dp *intel_dp = &intel_dig_port->dp; 659 660 if (!intel_dp->can_mst) 661 return; 662 663 drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr); 664 /* encoders will get killed by normal cleanup */ 665 } 666