1 /* 2 * Copyright 2023 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 /* FILE POLICY AND INTENDED USAGE: 27 * This file owns the creation/destruction of link structure. 28 */ 29 #include "link_factory.h" 30 #include "link_detection.h" 31 #include "link_resource.h" 32 #include "link_validation.h" 33 #include "link_dpms.h" 34 #include "accessories/link_dp_cts.h" 35 #include "accessories/link_dp_trace.h" 36 #include "accessories/link_fpga.h" 37 #include "protocols/link_ddc.h" 38 #include "protocols/link_dp_capability.h" 39 #include "protocols/link_dp_dpia_bw.h" 40 #include "protocols/link_dp_dpia.h" 41 #include "protocols/link_dp_irq_handler.h" 42 #include "protocols/link_dp_phy.h" 43 #include "protocols/link_dp_training.h" 44 #include "protocols/link_edp_panel_control.h" 45 #include "protocols/link_hpd.h" 46 #include "gpio_service_interface.h" 47 #include "atomfirmware.h" 48 49 #define DC_LOGGER_INIT(logger) 50 51 #define LINK_INFO(...) \ 52 DC_LOG_HW_HOTPLUG( \ 53 __VA_ARGS__) 54 55 /* link factory owns the creation/destruction of link structures. */ 56 static void construct_link_service_factory(struct link_service *link_srv) 57 { 58 59 link_srv->create_link = link_create; 60 link_srv->destroy_link = link_destroy; 61 } 62 63 /* link_detection manages link detection states and receiver states by using 64 * various link protocols. It also provides helper functions to interpret 65 * certain capabilities or status based on the states it manages or retrieve 66 * them directly from connected receivers. 67 */ 68 static void construct_link_service_detection(struct link_service *link_srv) 69 { 70 link_srv->detect_link = link_detect; 71 link_srv->detect_connection_type = link_detect_connection_type; 72 link_srv->add_remote_sink = link_add_remote_sink; 73 link_srv->remove_remote_sink = link_remove_remote_sink; 74 link_srv->get_hpd_state = link_get_hpd_state; 75 link_srv->get_hpd_gpio = link_get_hpd_gpio; 76 link_srv->enable_hpd = link_enable_hpd; 77 link_srv->disable_hpd = link_disable_hpd; 78 link_srv->enable_hpd_filter = link_enable_hpd_filter; 79 link_srv->reset_cur_dp_mst_topology = link_reset_cur_dp_mst_topology; 80 link_srv->get_status = link_get_status; 81 link_srv->is_hdcp1x_supported = link_is_hdcp14; 82 link_srv->is_hdcp2x_supported = link_is_hdcp22; 83 link_srv->clear_dprx_states = link_clear_dprx_states; 84 } 85 86 /* link resource implements accessors to link resource. */ 87 static void construct_link_service_resource(struct link_service *link_srv) 88 { 89 link_srv->get_cur_res_map = link_get_cur_res_map; 90 link_srv->restore_res_map = link_restore_res_map; 91 link_srv->get_cur_link_res = link_get_cur_link_res; 92 } 93 94 /* link validation owns timing validation against various link limitations. (ex. 95 * link bandwidth, receiver capability or our hardware capability) It also 96 * provides helper functions exposing bandwidth formulas used in validation. 97 */ 98 static void construct_link_service_validation(struct link_service *link_srv) 99 { 100 link_srv->validate_mode_timing = link_validate_mode_timing; 101 link_srv->dp_link_bandwidth_kbps = dp_link_bandwidth_kbps; 102 link_srv->validate_dpia_bandwidth = link_validate_dpia_bandwidth; 103 } 104 105 /* link dpms owns the programming sequence of stream's dpms state associated 106 * with the link and link's enable/disable sequences as result of the stream's 107 * dpms state change. 108 */ 109 static void construct_link_service_dpms(struct link_service *link_srv) 110 { 111 link_srv->set_dpms_on = link_set_dpms_on; 112 link_srv->set_dpms_off = link_set_dpms_off; 113 link_srv->resume = link_resume; 114 link_srv->blank_all_dp_displays = link_blank_all_dp_displays; 115 link_srv->blank_all_edp_displays = link_blank_all_edp_displays; 116 link_srv->blank_dp_stream = link_blank_dp_stream; 117 link_srv->increase_mst_payload = link_increase_mst_payload; 118 link_srv->reduce_mst_payload = link_reduce_mst_payload; 119 link_srv->set_dsc_on_stream = link_set_dsc_on_stream; 120 link_srv->set_dsc_enable = link_set_dsc_enable; 121 link_srv->update_dsc_config = link_update_dsc_config; 122 } 123 124 /* link ddc implements generic display communication protocols such as i2c, aux 125 * and scdc. It should not contain any specific applications of these 126 * protocols such as display capability query, detection, or handshaking such as 127 * link training. 128 */ 129 static void construct_link_service_ddc(struct link_service *link_srv) 130 { 131 link_srv->create_ddc_service = link_create_ddc_service; 132 link_srv->destroy_ddc_service = link_destroy_ddc_service; 133 link_srv->query_ddc_data = link_query_ddc_data; 134 link_srv->aux_transfer_raw = link_aux_transfer_raw; 135 link_srv->configure_fixed_vs_pe_retimer = link_configure_fixed_vs_pe_retimer; 136 link_srv->aux_transfer_with_retries_no_mutex = 137 link_aux_transfer_with_retries_no_mutex; 138 link_srv->is_in_aux_transaction_mode = link_is_in_aux_transaction_mode; 139 link_srv->get_aux_defer_delay = link_get_aux_defer_delay; 140 } 141 142 /* link dp capability implements dp specific link capability retrieval sequence. 143 * It is responsible for retrieving, parsing, overriding, deciding capability 144 * obtained from dp link. Link capability consists of encoders, DPRXs, cables, 145 * retimers, usb and all other possible backend capabilities. 146 */ 147 static void construct_link_service_dp_capability(struct link_service *link_srv) 148 { 149 link_srv->dp_is_sink_present = dp_is_sink_present; 150 link_srv->dp_is_fec_supported = dp_is_fec_supported; 151 link_srv->dp_is_128b_132b_signal = dp_is_128b_132b_signal; 152 link_srv->dp_get_max_link_enc_cap = dp_get_max_link_enc_cap; 153 link_srv->dp_get_verified_link_cap = dp_get_verified_link_cap; 154 link_srv->dp_get_encoding_format = link_dp_get_encoding_format; 155 link_srv->dp_should_enable_fec = dp_should_enable_fec; 156 link_srv->dp_decide_link_settings = link_decide_link_settings; 157 link_srv->mst_decide_link_encoding_format = 158 mst_decide_link_encoding_format; 159 link_srv->edp_decide_link_settings = edp_decide_link_settings; 160 link_srv->bw_kbps_from_raw_frl_link_rate_data = 161 link_bw_kbps_from_raw_frl_link_rate_data; 162 link_srv->dp_overwrite_extended_receiver_cap = 163 dp_overwrite_extended_receiver_cap; 164 link_srv->dp_decide_lttpr_mode = dp_decide_lttpr_mode; 165 } 166 167 /* link dp phy/dpia implements basic dp phy/dpia functionality such as 168 * enable/disable output and set lane/drive settings. It is responsible for 169 * maintaining and update software state representing current phy/dpia status 170 * such as current link settings. 171 */ 172 static void construct_link_service_dp_phy_or_dpia(struct link_service *link_srv) 173 { 174 link_srv->dpia_handle_usb4_bandwidth_allocation_for_link = 175 dpia_handle_usb4_bandwidth_allocation_for_link; 176 link_srv->dpia_handle_bw_alloc_response = dpia_handle_bw_alloc_response; 177 link_srv->dp_set_drive_settings = dp_set_drive_settings; 178 link_srv->dpcd_write_rx_power_ctrl = dpcd_write_rx_power_ctrl; 179 } 180 181 /* link dp irq handler implements DP HPD short pulse handling sequence according 182 * to DP specifications 183 */ 184 static void construct_link_service_dp_irq_handler(struct link_service *link_srv) 185 { 186 link_srv->dp_parse_link_loss_status = dp_parse_link_loss_status; 187 link_srv->dp_should_allow_hpd_rx_irq = dp_should_allow_hpd_rx_irq; 188 link_srv->dp_handle_link_loss = dp_handle_link_loss; 189 link_srv->dp_read_hpd_rx_irq_data = dp_read_hpd_rx_irq_data; 190 link_srv->dp_handle_hpd_rx_irq = dp_handle_hpd_rx_irq; 191 } 192 193 /* link edp panel control implements retrieval and configuration of eDP panel 194 * features such as PSR and ABM and it also manages specs defined eDP panel 195 * power sequences. 196 */ 197 static void construct_link_service_edp_panel_control(struct link_service *link_srv) 198 { 199 link_srv->edp_panel_backlight_power_on = edp_panel_backlight_power_on; 200 link_srv->edp_get_backlight_level = edp_get_backlight_level; 201 link_srv->edp_get_backlight_level_nits = edp_get_backlight_level_nits; 202 link_srv->edp_set_backlight_level = edp_set_backlight_level; 203 link_srv->edp_set_backlight_level_nits = edp_set_backlight_level_nits; 204 link_srv->edp_get_target_backlight_pwm = edp_get_target_backlight_pwm; 205 link_srv->edp_get_psr_state = edp_get_psr_state; 206 link_srv->edp_set_psr_allow_active = edp_set_psr_allow_active; 207 link_srv->edp_setup_psr = edp_setup_psr; 208 link_srv->edp_set_sink_vtotal_in_psr_active = 209 edp_set_sink_vtotal_in_psr_active; 210 link_srv->edp_get_psr_residency = edp_get_psr_residency; 211 212 link_srv->edp_get_replay_state = edp_get_replay_state; 213 link_srv->edp_set_replay_allow_active = edp_set_replay_allow_active; 214 link_srv->edp_setup_replay = edp_setup_replay; 215 link_srv->edp_set_coasting_vtotal = edp_set_coasting_vtotal; 216 link_srv->edp_replay_residency = edp_replay_residency; 217 218 link_srv->edp_wait_for_t12 = edp_wait_for_t12; 219 link_srv->edp_is_ilr_optimization_required = 220 edp_is_ilr_optimization_required; 221 link_srv->edp_backlight_enable_aux = edp_backlight_enable_aux; 222 link_srv->edp_add_delay_for_T9 = edp_add_delay_for_T9; 223 link_srv->edp_receiver_ready_T9 = edp_receiver_ready_T9; 224 link_srv->edp_receiver_ready_T7 = edp_receiver_ready_T7; 225 link_srv->edp_power_alpm_dpcd_enable = edp_power_alpm_dpcd_enable; 226 link_srv->edp_set_panel_power = edp_set_panel_power; 227 } 228 229 /* link dp cts implements dp compliance test automation protocols and manual 230 * testing interfaces for debugging and certification purpose. 231 */ 232 static void construct_link_service_dp_cts(struct link_service *link_srv) 233 { 234 link_srv->dp_handle_automated_test = dp_handle_automated_test; 235 link_srv->dp_set_test_pattern = dp_set_test_pattern; 236 link_srv->dp_set_preferred_link_settings = 237 dp_set_preferred_link_settings; 238 link_srv->dp_set_preferred_training_settings = 239 dp_set_preferred_training_settings; 240 } 241 242 /* link dp trace implements tracing interfaces for tracking major dp sequences 243 * including execution status and timestamps 244 */ 245 static void construct_link_service_dp_trace(struct link_service *link_srv) 246 { 247 link_srv->dp_trace_is_initialized = dp_trace_is_initialized; 248 link_srv->dp_trace_set_is_logged_flag = dp_trace_set_is_logged_flag; 249 link_srv->dp_trace_is_logged = dp_trace_is_logged; 250 link_srv->dp_trace_get_lt_end_timestamp = dp_trace_get_lt_end_timestamp; 251 link_srv->dp_trace_get_lt_counts = dp_trace_get_lt_counts; 252 link_srv->dp_trace_get_link_loss_count = dp_trace_get_link_loss_count; 253 link_srv->dp_trace_set_edp_power_timestamp = 254 dp_trace_set_edp_power_timestamp; 255 link_srv->dp_trace_get_edp_poweron_timestamp = 256 dp_trace_get_edp_poweron_timestamp; 257 link_srv->dp_trace_get_edp_poweroff_timestamp = 258 dp_trace_get_edp_poweroff_timestamp; 259 link_srv->dp_trace_source_sequence = dp_trace_source_sequence; 260 } 261 262 static void construct_link_service(struct link_service *link_srv) 263 { 264 /* All link service functions should fall under some sub categories. 265 * If a new function doesn't perfectly fall under an existing sub 266 * category, it must be that you are either adding a whole new aspect of 267 * responsibility to link service or something doesn't belong to link 268 * service. In that case please contact the arch owner to arrange a 269 * design review meeting. 270 */ 271 construct_link_service_factory(link_srv); 272 construct_link_service_detection(link_srv); 273 construct_link_service_resource(link_srv); 274 construct_link_service_validation(link_srv); 275 construct_link_service_dpms(link_srv); 276 construct_link_service_ddc(link_srv); 277 construct_link_service_dp_capability(link_srv); 278 construct_link_service_dp_phy_or_dpia(link_srv); 279 construct_link_service_dp_irq_handler(link_srv); 280 construct_link_service_edp_panel_control(link_srv); 281 construct_link_service_dp_cts(link_srv); 282 construct_link_service_dp_trace(link_srv); 283 } 284 285 struct link_service *link_create_link_service(void) 286 { 287 struct link_service *link_srv = kzalloc(sizeof(*link_srv), GFP_KERNEL); 288 289 if (link_srv == NULL) 290 goto fail; 291 292 construct_link_service(link_srv); 293 294 return link_srv; 295 fail: 296 return NULL; 297 } 298 299 void link_destroy_link_service(struct link_service **link_srv) 300 { 301 kfree(*link_srv); 302 *link_srv = NULL; 303 } 304 305 static enum transmitter translate_encoder_to_transmitter( 306 struct graphics_object_id encoder) 307 { 308 switch (encoder.id) { 309 case ENCODER_ID_INTERNAL_UNIPHY: 310 switch (encoder.enum_id) { 311 case ENUM_ID_1: 312 return TRANSMITTER_UNIPHY_A; 313 case ENUM_ID_2: 314 return TRANSMITTER_UNIPHY_B; 315 default: 316 return TRANSMITTER_UNKNOWN; 317 } 318 break; 319 case ENCODER_ID_INTERNAL_UNIPHY1: 320 switch (encoder.enum_id) { 321 case ENUM_ID_1: 322 return TRANSMITTER_UNIPHY_C; 323 case ENUM_ID_2: 324 return TRANSMITTER_UNIPHY_D; 325 default: 326 return TRANSMITTER_UNKNOWN; 327 } 328 break; 329 case ENCODER_ID_INTERNAL_UNIPHY2: 330 switch (encoder.enum_id) { 331 case ENUM_ID_1: 332 return TRANSMITTER_UNIPHY_E; 333 case ENUM_ID_2: 334 return TRANSMITTER_UNIPHY_F; 335 default: 336 return TRANSMITTER_UNKNOWN; 337 } 338 break; 339 case ENCODER_ID_INTERNAL_UNIPHY3: 340 switch (encoder.enum_id) { 341 case ENUM_ID_1: 342 return TRANSMITTER_UNIPHY_G; 343 default: 344 return TRANSMITTER_UNKNOWN; 345 } 346 break; 347 case ENCODER_ID_EXTERNAL_NUTMEG: 348 switch (encoder.enum_id) { 349 case ENUM_ID_1: 350 return TRANSMITTER_NUTMEG_CRT; 351 default: 352 return TRANSMITTER_UNKNOWN; 353 } 354 break; 355 case ENCODER_ID_EXTERNAL_TRAVIS: 356 switch (encoder.enum_id) { 357 case ENUM_ID_1: 358 return TRANSMITTER_TRAVIS_CRT; 359 case ENUM_ID_2: 360 return TRANSMITTER_TRAVIS_LCD; 361 default: 362 return TRANSMITTER_UNKNOWN; 363 } 364 break; 365 default: 366 return TRANSMITTER_UNKNOWN; 367 } 368 } 369 370 static uint8_t translate_dig_inst_to_pwrseq_inst(struct dc_link *link) 371 { 372 uint8_t pwrseq_inst = 0xF; 373 374 switch (link->eng_id) { 375 case ENGINE_ID_DIGA: 376 pwrseq_inst = 0; 377 break; 378 case ENGINE_ID_DIGB: 379 pwrseq_inst = 1; 380 break; 381 default: 382 DC_LOG_WARNING("Unsupported pwrseq engine id: %d!\n", link->eng_id); 383 ASSERT(false); 384 break; 385 } 386 387 return pwrseq_inst; 388 } 389 390 391 static void link_destruct(struct dc_link *link) 392 { 393 int i; 394 395 if (link->hpd_gpio) { 396 dal_gpio_destroy_irq(&link->hpd_gpio); 397 link->hpd_gpio = NULL; 398 } 399 400 if (link->ddc) 401 link_destroy_ddc_service(&link->ddc); 402 403 if (link->panel_cntl) 404 link->panel_cntl->funcs->destroy(&link->panel_cntl); 405 406 if (link->link_enc && !link->is_dig_mapping_flexible) { 407 /* Update link encoder resource tracking variables. These are used for 408 * the dynamic assignment of link encoders to streams. Virtual links 409 * are not assigned encoder resources on creation. 410 */ 411 if (link->link_id.id != CONNECTOR_ID_VIRTUAL) { 412 link->dc->res_pool->link_encoders[link->eng_id - ENGINE_ID_DIGA] = NULL; 413 link->dc->res_pool->dig_link_enc_count--; 414 } 415 link->link_enc->funcs->destroy(&link->link_enc); 416 } 417 418 if (link->local_sink) 419 dc_sink_release(link->local_sink); 420 421 for (i = 0; i < link->sink_count; ++i) 422 dc_sink_release(link->remote_sinks[i]); 423 } 424 425 static enum channel_id get_ddc_line(struct dc_link *link) 426 { 427 struct ddc *ddc; 428 enum channel_id channel; 429 430 channel = CHANNEL_ID_UNKNOWN; 431 432 ddc = get_ddc_pin(link->ddc); 433 434 if (ddc) { 435 switch (dal_ddc_get_line(ddc)) { 436 case GPIO_DDC_LINE_DDC1: 437 channel = CHANNEL_ID_DDC1; 438 break; 439 case GPIO_DDC_LINE_DDC2: 440 channel = CHANNEL_ID_DDC2; 441 break; 442 case GPIO_DDC_LINE_DDC3: 443 channel = CHANNEL_ID_DDC3; 444 break; 445 case GPIO_DDC_LINE_DDC4: 446 channel = CHANNEL_ID_DDC4; 447 break; 448 case GPIO_DDC_LINE_DDC5: 449 channel = CHANNEL_ID_DDC5; 450 break; 451 case GPIO_DDC_LINE_DDC6: 452 channel = CHANNEL_ID_DDC6; 453 break; 454 case GPIO_DDC_LINE_DDC_VGA: 455 channel = CHANNEL_ID_DDC_VGA; 456 break; 457 case GPIO_DDC_LINE_I2C_PAD: 458 channel = CHANNEL_ID_I2C_PAD; 459 break; 460 default: 461 BREAK_TO_DEBUGGER(); 462 break; 463 } 464 } 465 466 return channel; 467 } 468 469 static bool construct_phy(struct dc_link *link, 470 const struct link_init_data *init_params) 471 { 472 uint8_t i; 473 struct ddc_service_init_data ddc_service_init_data = { 0 }; 474 struct dc_context *dc_ctx = init_params->ctx; 475 struct encoder_init_data enc_init_data = { 0 }; 476 struct panel_cntl_init_data panel_cntl_init_data = { 0 }; 477 struct integrated_info info = { 0 }; 478 struct dc_bios *bios = init_params->dc->ctx->dc_bios; 479 const struct dc_vbios_funcs *bp_funcs = bios->funcs; 480 struct bp_disp_connector_caps_info disp_connect_caps_info = { 0 }; 481 482 DC_LOGGER_INIT(dc_ctx->logger); 483 484 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; 485 link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID; 486 link->link_status.dpcd_caps = &link->dpcd_caps; 487 488 link->dc = init_params->dc; 489 link->ctx = dc_ctx; 490 link->link_index = init_params->link_index; 491 492 memset(&link->preferred_training_settings, 0, 493 sizeof(struct dc_link_training_overrides)); 494 memset(&link->preferred_link_setting, 0, 495 sizeof(struct dc_link_settings)); 496 497 link->link_id = 498 bios->funcs->get_connector_id(bios, init_params->connector_index); 499 500 link->ep_type = DISPLAY_ENDPOINT_PHY; 501 502 DC_LOG_DC("BIOS object table - link_id: %d", link->link_id.id); 503 504 if (bios->funcs->get_disp_connector_caps_info) { 505 bios->funcs->get_disp_connector_caps_info(bios, link->link_id, &disp_connect_caps_info); 506 link->is_internal_display = disp_connect_caps_info.INTERNAL_DISPLAY; 507 DC_LOG_DC("BIOS object table - is_internal_display: %d", link->is_internal_display); 508 } 509 510 if (link->link_id.type != OBJECT_TYPE_CONNECTOR) { 511 dm_output_to_console("%s: Invalid Connector ObjectID from Adapter Service for connector index:%d! type %d expected %d\n", 512 __func__, init_params->connector_index, 513 link->link_id.type, OBJECT_TYPE_CONNECTOR); 514 goto create_fail; 515 } 516 517 if (link->dc->res_pool->funcs->link_init) 518 link->dc->res_pool->funcs->link_init(link); 519 520 link->hpd_gpio = link_get_hpd_gpio(link->ctx->dc_bios, link->link_id, 521 link->ctx->gpio_service); 522 523 if (link->hpd_gpio) { 524 dal_gpio_open(link->hpd_gpio, GPIO_MODE_INTERRUPT); 525 dal_gpio_unlock_pin(link->hpd_gpio); 526 link->irq_source_hpd = dal_irq_get_source(link->hpd_gpio); 527 528 DC_LOG_DC("BIOS object table - hpd_gpio id: %d", link->hpd_gpio->id); 529 DC_LOG_DC("BIOS object table - hpd_gpio en: %d", link->hpd_gpio->en); 530 } 531 532 switch (link->link_id.id) { 533 case CONNECTOR_ID_HDMI_TYPE_A: 534 link->connector_signal = SIGNAL_TYPE_HDMI_TYPE_A; 535 536 break; 537 case CONNECTOR_ID_SINGLE_LINK_DVID: 538 case CONNECTOR_ID_SINGLE_LINK_DVII: 539 link->connector_signal = SIGNAL_TYPE_DVI_SINGLE_LINK; 540 break; 541 case CONNECTOR_ID_DUAL_LINK_DVID: 542 case CONNECTOR_ID_DUAL_LINK_DVII: 543 link->connector_signal = SIGNAL_TYPE_DVI_DUAL_LINK; 544 break; 545 case CONNECTOR_ID_DISPLAY_PORT: 546 case CONNECTOR_ID_USBC: 547 link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT; 548 549 if (link->hpd_gpio) 550 link->irq_source_hpd_rx = 551 dal_irq_get_rx_source(link->hpd_gpio); 552 553 break; 554 case CONNECTOR_ID_EDP: 555 link->connector_signal = SIGNAL_TYPE_EDP; 556 557 if (link->hpd_gpio) { 558 if (!link->dc->config.allow_edp_hotplug_detection) 559 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; 560 561 switch (link->dc->config.allow_edp_hotplug_detection) { 562 case HPD_EN_FOR_ALL_EDP: 563 link->irq_source_hpd_rx = 564 dal_irq_get_rx_source(link->hpd_gpio); 565 break; 566 case HPD_EN_FOR_PRIMARY_EDP_ONLY: 567 if (link->link_index == 0) 568 link->irq_source_hpd_rx = 569 dal_irq_get_rx_source(link->hpd_gpio); 570 else 571 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; 572 break; 573 case HPD_EN_FOR_SECONDARY_EDP_ONLY: 574 if (link->link_index == 1) 575 link->irq_source_hpd_rx = 576 dal_irq_get_rx_source(link->hpd_gpio); 577 else 578 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; 579 break; 580 default: 581 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; 582 break; 583 } 584 } 585 586 break; 587 case CONNECTOR_ID_LVDS: 588 link->connector_signal = SIGNAL_TYPE_LVDS; 589 break; 590 default: 591 DC_LOG_WARNING("Unsupported Connector type:%d!\n", 592 link->link_id.id); 593 goto create_fail; 594 } 595 596 LINK_INFO("Connector[%d] description: signal: %s\n", 597 init_params->connector_index, 598 signal_type_to_string(link->connector_signal)); 599 600 ddc_service_init_data.ctx = link->ctx; 601 ddc_service_init_data.id = link->link_id; 602 ddc_service_init_data.link = link; 603 link->ddc = link_create_ddc_service(&ddc_service_init_data); 604 605 if (!link->ddc) { 606 DC_ERROR("Failed to create ddc_service!\n"); 607 goto ddc_create_fail; 608 } 609 610 if (!link->ddc->ddc_pin) { 611 DC_ERROR("Failed to get I2C info for connector!\n"); 612 goto ddc_create_fail; 613 } 614 615 link->ddc_hw_inst = 616 dal_ddc_get_line(get_ddc_pin(link->ddc)); 617 618 enc_init_data.ctx = dc_ctx; 619 bp_funcs->get_src_obj(dc_ctx->dc_bios, link->link_id, 0, 620 &enc_init_data.encoder); 621 enc_init_data.connector = link->link_id; 622 enc_init_data.channel = get_ddc_line(link); 623 enc_init_data.hpd_source = get_hpd_line(link); 624 625 link->hpd_src = enc_init_data.hpd_source; 626 627 enc_init_data.transmitter = 628 translate_encoder_to_transmitter(enc_init_data.encoder); 629 link->link_enc = 630 link->dc->res_pool->funcs->link_enc_create(dc_ctx, &enc_init_data); 631 632 if (!link->link_enc) { 633 DC_ERROR("Failed to create link encoder!\n"); 634 goto link_enc_create_fail; 635 } 636 637 DC_LOG_DC("BIOS object table - DP_IS_USB_C: %d", link->link_enc->features.flags.bits.DP_IS_USB_C); 638 DC_LOG_DC("BIOS object table - IS_DP2_CAPABLE: %d", link->link_enc->features.flags.bits.IS_DP2_CAPABLE); 639 640 /* Update link encoder tracking variables. These are used for the dynamic 641 * assignment of link encoders to streams. 642 */ 643 link->eng_id = link->link_enc->preferred_engine; 644 link->dc->res_pool->link_encoders[link->eng_id - ENGINE_ID_DIGA] = link->link_enc; 645 link->dc->res_pool->dig_link_enc_count++; 646 647 link->link_enc_hw_inst = link->link_enc->transmitter; 648 649 if (link->dc->res_pool->funcs->panel_cntl_create && 650 (link->link_id.id == CONNECTOR_ID_EDP || 651 link->link_id.id == CONNECTOR_ID_LVDS)) { 652 panel_cntl_init_data.ctx = dc_ctx; 653 panel_cntl_init_data.inst = panel_cntl_init_data.ctx->dc_edp_id_count; 654 panel_cntl_init_data.pwrseq_inst = translate_dig_inst_to_pwrseq_inst(link); 655 link->panel_cntl = 656 link->dc->res_pool->funcs->panel_cntl_create( 657 &panel_cntl_init_data); 658 panel_cntl_init_data.ctx->dc_edp_id_count++; 659 660 if (link->panel_cntl == NULL) { 661 DC_ERROR("Failed to create link panel_cntl!\n"); 662 goto panel_cntl_create_fail; 663 } 664 } 665 for (i = 0; i < 4; i++) { 666 if (bp_funcs->get_device_tag(dc_ctx->dc_bios, 667 link->link_id, i, 668 &link->device_tag) != BP_RESULT_OK) { 669 DC_ERROR("Failed to find device tag!\n"); 670 goto device_tag_fail; 671 } 672 673 /* Look for device tag that matches connector signal, 674 * CRT for rgb, LCD for other supported signal tyes 675 */ 676 if (!bp_funcs->is_device_id_supported(dc_ctx->dc_bios, 677 link->device_tag.dev_id)) 678 continue; 679 if (link->device_tag.dev_id.device_type == DEVICE_TYPE_CRT && 680 link->connector_signal != SIGNAL_TYPE_RGB) 681 continue; 682 if (link->device_tag.dev_id.device_type == DEVICE_TYPE_LCD && 683 link->connector_signal == SIGNAL_TYPE_RGB) 684 continue; 685 686 DC_LOG_DC("BIOS object table - device_tag.acpi_device: %d", link->device_tag.acpi_device); 687 DC_LOG_DC("BIOS object table - device_tag.dev_id.device_type: %d", link->device_tag.dev_id.device_type); 688 DC_LOG_DC("BIOS object table - device_tag.dev_id.enum_id: %d", link->device_tag.dev_id.enum_id); 689 break; 690 } 691 692 if (bios->integrated_info) 693 info = *bios->integrated_info; 694 695 /* Look for channel mapping corresponding to connector and device tag */ 696 for (i = 0; i < MAX_NUMBER_OF_EXT_DISPLAY_PATH; i++) { 697 struct external_display_path *path = 698 &info.ext_disp_conn_info.path[i]; 699 700 if (path->device_connector_id.enum_id == link->link_id.enum_id && 701 path->device_connector_id.id == link->link_id.id && 702 path->device_connector_id.type == link->link_id.type) { 703 if (link->device_tag.acpi_device != 0 && 704 path->device_acpi_enum == link->device_tag.acpi_device) { 705 link->ddi_channel_mapping = path->channel_mapping; 706 link->chip_caps = path->caps; 707 DC_LOG_DC("BIOS object table - ddi_channel_mapping: 0x%04X", link->ddi_channel_mapping.raw); 708 DC_LOG_DC("BIOS object table - chip_caps: %d", link->chip_caps); 709 } else if (path->device_tag == 710 link->device_tag.dev_id.raw_device_tag) { 711 link->ddi_channel_mapping = path->channel_mapping; 712 link->chip_caps = path->caps; 713 DC_LOG_DC("BIOS object table - ddi_channel_mapping: 0x%04X", link->ddi_channel_mapping.raw); 714 DC_LOG_DC("BIOS object table - chip_caps: %d", link->chip_caps); 715 } 716 717 if (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) { 718 link->bios_forced_drive_settings.VOLTAGE_SWING = 719 (info.ext_disp_conn_info.fixdpvoltageswing & 0x3); 720 link->bios_forced_drive_settings.PRE_EMPHASIS = 721 ((info.ext_disp_conn_info.fixdpvoltageswing >> 2) & 0x3); 722 } 723 724 break; 725 } 726 } 727 728 if (bios->funcs->get_atom_dc_golden_table) 729 bios->funcs->get_atom_dc_golden_table(bios); 730 731 /* 732 * TODO check if GPIO programmed correctly 733 * 734 * If GPIO isn't programmed correctly HPD might not rise or drain 735 * fast enough, leading to bounces. 736 */ 737 program_hpd_filter(link); 738 739 link->psr_settings.psr_vtotal_control_support = false; 740 link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED; 741 742 DC_LOG_DC("BIOS object table - %s finished successfully.\n", __func__); 743 return true; 744 device_tag_fail: 745 link->link_enc->funcs->destroy(&link->link_enc); 746 link_enc_create_fail: 747 if (link->panel_cntl != NULL) 748 link->panel_cntl->funcs->destroy(&link->panel_cntl); 749 panel_cntl_create_fail: 750 link_destroy_ddc_service(&link->ddc); 751 ddc_create_fail: 752 create_fail: 753 754 if (link->hpd_gpio) { 755 dal_gpio_destroy_irq(&link->hpd_gpio); 756 link->hpd_gpio = NULL; 757 } 758 759 DC_LOG_DC("BIOS object table - %s failed.\n", __func__); 760 return false; 761 } 762 763 static bool construct_dpia(struct dc_link *link, 764 const struct link_init_data *init_params) 765 { 766 struct ddc_service_init_data ddc_service_init_data = { 0 }; 767 struct dc_context *dc_ctx = init_params->ctx; 768 769 DC_LOGGER_INIT(dc_ctx->logger); 770 771 /* Initialized irq source for hpd and hpd rx */ 772 link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; 773 link->irq_source_hpd_rx = DC_IRQ_SOURCE_INVALID; 774 link->link_status.dpcd_caps = &link->dpcd_caps; 775 776 link->dc = init_params->dc; 777 link->ctx = dc_ctx; 778 link->link_index = init_params->link_index; 779 780 memset(&link->preferred_training_settings, 0, 781 sizeof(struct dc_link_training_overrides)); 782 memset(&link->preferred_link_setting, 0, 783 sizeof(struct dc_link_settings)); 784 785 /* Dummy Init for linkid */ 786 link->link_id.type = OBJECT_TYPE_CONNECTOR; 787 link->link_id.id = CONNECTOR_ID_DISPLAY_PORT; 788 link->link_id.enum_id = ENUM_ID_1 + init_params->connector_index; 789 link->is_internal_display = false; 790 link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT; 791 LINK_INFO("Connector[%d] description:signal %d\n", 792 init_params->connector_index, 793 link->connector_signal); 794 795 link->ep_type = DISPLAY_ENDPOINT_USB4_DPIA; 796 link->is_dig_mapping_flexible = true; 797 798 /* TODO: Initialize link : funcs->link_init */ 799 800 ddc_service_init_data.ctx = link->ctx; 801 ddc_service_init_data.id = link->link_id; 802 ddc_service_init_data.link = link; 803 /* Set indicator for dpia link so that ddc wont be created */ 804 ddc_service_init_data.is_dpia_link = true; 805 806 link->ddc = link_create_ddc_service(&ddc_service_init_data); 807 if (!link->ddc) { 808 DC_ERROR("Failed to create ddc_service!\n"); 809 goto ddc_create_fail; 810 } 811 812 /* Set dpia port index : 0 to number of dpia ports */ 813 link->ddc_hw_inst = init_params->connector_index; 814 815 // Assign Dpia preferred eng_id 816 if (link->dc->res_pool->funcs->get_preferred_eng_id_dpia) 817 link->dpia_preferred_eng_id = link->dc->res_pool->funcs->get_preferred_eng_id_dpia(link->ddc_hw_inst); 818 819 /* TODO: Create link encoder */ 820 821 link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED; 822 823 /* Some docks seem to NAK I2C writes to segment pointer with mot=0. */ 824 link->wa_flags.dp_mot_reset_segment = true; 825 826 return true; 827 828 ddc_create_fail: 829 return false; 830 } 831 832 static bool link_construct(struct dc_link *link, 833 const struct link_init_data *init_params) 834 { 835 /* Handle dpia case */ 836 if (init_params->is_dpia_link == true) 837 return construct_dpia(link, init_params); 838 else 839 return construct_phy(link, init_params); 840 } 841 842 struct dc_link *link_create(const struct link_init_data *init_params) 843 { 844 struct dc_link *link = 845 kzalloc(sizeof(*link), GFP_KERNEL); 846 847 if (NULL == link) 848 goto alloc_fail; 849 850 if (false == link_construct(link, init_params)) 851 goto construct_fail; 852 853 return link; 854 855 construct_fail: 856 kfree(link); 857 858 alloc_fail: 859 return NULL; 860 } 861 862 void link_destroy(struct dc_link **link) 863 { 864 link_destruct(*link); 865 kfree(*link); 866 *link = NULL; 867 } 868