drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c

   1 /*
   2  * Copyright 2012-15 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 #include <linux/delay.h>
  27 #include <linux/slab.h>
  28
  29 #include "reg_helper.h"
  30
  31 #include "core_types.h"
  32 #include "link_encoder.h"
  33 #include "dcn10_link_encoder.h"
  34 #include "stream_encoder.h"
  35 #include "i2caux_interface.h"
  36 #include "dc_bios_types.h"
  37
  38 #include "gpio_service_interface.h"
  39
  40 #define CTX \
  41         enc10->base.ctx
  42 #define DC_LOGGER \
  43         enc10->base.ctx->logger
  44
  45 #define REG(reg)\
  46         (enc10->link_regs->reg)
  47
  48 #undef FN
  49 #define FN(reg_name, field_name) \
  50         enc10->link_shift->field_name, enc10->link_mask->field_name
  51
  52
  53 /*
  54  * @brief
  55  * Trigger Source Select
  56  * ASIC-dependent, actual values for register programming
  57  */
  58 #define DCN10_DIG_FE_SOURCE_SELECT_INVALID 0x0
  59 #define DCN10_DIG_FE_SOURCE_SELECT_DIGA 0x1
  60 #define DCN10_DIG_FE_SOURCE_SELECT_DIGB 0x2
  61 #define DCN10_DIG_FE_SOURCE_SELECT_DIGC 0x4
  62 #define DCN10_DIG_FE_SOURCE_SELECT_DIGD 0x08
  63 #define DCN10_DIG_FE_SOURCE_SELECT_DIGE 0x10
  64 #define DCN10_DIG_FE_SOURCE_SELECT_DIGF 0x20
  65 #define DCN10_DIG_FE_SOURCE_SELECT_DIGG 0x40
  66
  67 enum {
  68         DP_MST_UPDATE_MAX_RETRY = 50
  69 };
  70
  71 static const struct link_encoder_funcs dcn10_lnk_enc_funcs = {
  72         .validate_output_with_stream =
  73                 dcn10_link_encoder_validate_output_with_stream,
  74         .hw_init = dcn10_link_encoder_hw_init,
  75         .setup = dcn10_link_encoder_setup,
  76         .enable_tmds_output = dcn10_link_encoder_enable_tmds_output,
  77         .enable_dp_output = dcn10_link_encoder_enable_dp_output,
  78         .enable_dp_mst_output = dcn10_link_encoder_enable_dp_mst_output,
  79         .disable_output = dcn10_link_encoder_disable_output,
  80         .dp_set_lane_settings = dcn10_link_encoder_dp_set_lane_settings,
  81         .dp_set_phy_pattern = dcn10_link_encoder_dp_set_phy_pattern,
  82         .update_mst_stream_allocation_table =
  83                 dcn10_link_encoder_update_mst_stream_allocation_table,
  84         .psr_program_dp_dphy_fast_training =
  85                         dcn10_psr_program_dp_dphy_fast_training,
  86         .psr_program_secondary_packet = dcn10_psr_program_secondary_packet,
  87         .connect_dig_be_to_fe = dcn10_link_encoder_connect_dig_be_to_fe,
  88         .enable_hpd = dcn10_link_encoder_enable_hpd,
  89         .disable_hpd = dcn10_link_encoder_disable_hpd,
  90         .is_dig_enabled = dcn10_is_dig_enabled,
  91         .get_dig_frontend = dcn10_get_dig_frontend,
  92         .get_dig_mode = dcn10_get_dig_mode,
  93         .destroy = dcn10_link_encoder_destroy,
  94         .get_max_link_cap = dcn10_link_encoder_get_max_link_cap,
  95 };
  96
  97 static enum bp_result link_transmitter_control(
  98         struct dcn10_link_encoder *enc10,
  99         struct bp_transmitter_control *cntl)
 100 {
 101         enum bp_result result;
 102         struct dc_bios *bp = enc10->base.ctx->dc_bios;
 103
 104         result = bp->funcs->transmitter_control(bp, cntl);
 105
 106         return result;
 107 }
 108
 109 static void enable_phy_bypass_mode(
 110         struct dcn10_link_encoder *enc10,
 111         bool enable)
 112 {
 113         /* This register resides in DP back end block;
 114          * transmitter is used for the offset
 115          */
 116         REG_UPDATE(DP_DPHY_CNTL, DPHY_BYPASS, enable);
 117
 118 }
 119
 120 static void disable_prbs_symbols(
 121         struct dcn10_link_encoder *enc10,
 122         bool disable)
 123 {
 124         /* This register resides in DP back end block;
 125          * transmitter is used for the offset
 126          */
 127         REG_UPDATE_4(DP_DPHY_CNTL,
 128                         DPHY_ATEST_SEL_LANE0, disable,
 129                         DPHY_ATEST_SEL_LANE1, disable,
 130                         DPHY_ATEST_SEL_LANE2, disable,
 131                         DPHY_ATEST_SEL_LANE3, disable);
 132 }
 133
 134 static void disable_prbs_mode(
 135         struct dcn10_link_encoder *enc10)
 136 {
 137         REG_UPDATE(DP_DPHY_PRBS_CNTL, DPHY_PRBS_EN, 0);
 138 }
 139
 140 static void program_pattern_symbols(
 141         struct dcn10_link_encoder *enc10,
 142         uint16_t pattern_symbols[8])
 143 {
 144         /* This register resides in DP back end block;
 145          * transmitter is used for the offset
 146          */
 147         REG_SET_3(DP_DPHY_SYM0, 0,
 148                         DPHY_SYM1, pattern_symbols[0],
 149                         DPHY_SYM2, pattern_symbols[1],
 150                         DPHY_SYM3, pattern_symbols[2]);
 151
 152         /* This register resides in DP back end block;
 153          * transmitter is used for the offset
 154          */
 155         REG_SET_3(DP_DPHY_SYM1, 0,
 156                         DPHY_SYM4, pattern_symbols[3],
 157                         DPHY_SYM5, pattern_symbols[4],
 158                         DPHY_SYM6, pattern_symbols[5]);
 159
 160         /* This register resides in DP back end block;
 161          * transmitter is used for the offset
 162          */
 163         REG_SET_2(DP_DPHY_SYM2, 0,
 164                         DPHY_SYM7, pattern_symbols[6],
 165                         DPHY_SYM8, pattern_symbols[7]);
 166 }
 167
 168 static void set_dp_phy_pattern_d102(
 169         struct dcn10_link_encoder *enc10)
 170 {
 171         /* Disable PHY Bypass mode to setup the test pattern */
 172         enable_phy_bypass_mode(enc10, false);
 173
 174         /* For 10-bit PRBS or debug symbols
 175          * please use the following sequence:
 176          *
 177          * Enable debug symbols on the lanes
 178          */
 179         disable_prbs_symbols(enc10, true);
 180
 181         /* Disable PRBS mode */
 182         disable_prbs_mode(enc10);
 183
 184         /* Program debug symbols to be output */
 185         {
 186                 uint16_t pattern_symbols[8] = {
 187                         0x2AA, 0x2AA, 0x2AA, 0x2AA,
 188                         0x2AA, 0x2AA, 0x2AA, 0x2AA
 189                 };
 190
 191                 program_pattern_symbols(enc10, pattern_symbols);
 192         }
 193
 194         /* Enable phy bypass mode to enable the test pattern */
 195
 196         enable_phy_bypass_mode(enc10, true);
 197 }
 198
 199 static void set_link_training_complete(
 200         struct dcn10_link_encoder *enc10,
 201         bool complete)
 202 {
 203         /* This register resides in DP back end block;
 204          * transmitter is used for the offset
 205          */
 206         REG_UPDATE(DP_LINK_CNTL, DP_LINK_TRAINING_COMPLETE, complete);
 207
 208 }
 209
 210 void dcn10_link_encoder_set_dp_phy_pattern_training_pattern(
 211         struct link_encoder *enc,
 212         uint32_t index)
 213 {
 214         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 215         /* Write Training Pattern */
 216
 217         REG_WRITE(DP_DPHY_TRAINING_PATTERN_SEL, index);
 218
 219         /* Set HW Register Training Complete to false */
 220
 221         set_link_training_complete(enc10, false);
 222
 223         /* Disable PHY Bypass mode to output Training Pattern */
 224
 225         enable_phy_bypass_mode(enc10, false);
 226
 227         /* Disable PRBS mode */
 228         disable_prbs_mode(enc10);
 229 }
 230
 231 static void setup_panel_mode(
 232         struct dcn10_link_encoder *enc10,
 233         enum dp_panel_mode panel_mode)
 234 {
 235         uint32_t value;
 236
 237         if (!REG(DP_DPHY_INTERNAL_CTRL))
 238                 return;
 239
 240         value = REG_READ(DP_DPHY_INTERNAL_CTRL);
 241
 242         switch (panel_mode) {
 243         case DP_PANEL_MODE_EDP:
 244                 value = 0x1;
 245                 break;
 246         case DP_PANEL_MODE_SPECIAL:
 247                 value = 0x11;
 248                 break;
 249         default:
 250                 value = 0x0;
 251                 break;
 252         }
 253
 254         REG_WRITE(DP_DPHY_INTERNAL_CTRL, value);
 255 }
 256
 257 static void set_dp_phy_pattern_symbol_error(
 258         struct dcn10_link_encoder *enc10)
 259 {
 260         /* Disable PHY Bypass mode to setup the test pattern */
 261         enable_phy_bypass_mode(enc10, false);
 262
 263         /* program correct panel mode*/
 264         setup_panel_mode(enc10, DP_PANEL_MODE_DEFAULT);
 265
 266         /* A PRBS23 pattern is used for most DP electrical measurements. */
 267
 268         /* Enable PRBS symbols on the lanes */
 269         disable_prbs_symbols(enc10, false);
 270
 271         /* For PRBS23 Set bit DPHY_PRBS_SEL=1 and Set bit DPHY_PRBS_EN=1 */
 272         REG_UPDATE_2(DP_DPHY_PRBS_CNTL,
 273                         DPHY_PRBS_SEL, 1,
 274                         DPHY_PRBS_EN, 1);
 275
 276         /* Enable phy bypass mode to enable the test pattern */
 277         enable_phy_bypass_mode(enc10, true);
 278 }
 279
 280 static void set_dp_phy_pattern_prbs7(
 281         struct dcn10_link_encoder *enc10)
 282 {
 283         /* Disable PHY Bypass mode to setup the test pattern */
 284         enable_phy_bypass_mode(enc10, false);
 285
 286         /* A PRBS7 pattern is used for most DP electrical measurements. */
 287
 288         /* Enable PRBS symbols on the lanes */
 289         disable_prbs_symbols(enc10, false);
 290
 291         /* For PRBS7 Set bit DPHY_PRBS_SEL=0 and Set bit DPHY_PRBS_EN=1 */
 292         REG_UPDATE_2(DP_DPHY_PRBS_CNTL,
 293                         DPHY_PRBS_SEL, 0,
 294                         DPHY_PRBS_EN, 1);
 295
 296         /* Enable phy bypass mode to enable the test pattern */
 297         enable_phy_bypass_mode(enc10, true);
 298 }
 299
 300 static void set_dp_phy_pattern_80bit_custom(
 301         struct dcn10_link_encoder *enc10,
 302         const uint8_t *pattern)
 303 {
 304         /* Disable PHY Bypass mode to setup the test pattern */
 305         enable_phy_bypass_mode(enc10, false);
 306
 307         /* Enable debug symbols on the lanes */
 308
 309         disable_prbs_symbols(enc10, true);
 310
 311         /* Enable PHY bypass mode to enable the test pattern */
 312         /* TODO is it really needed ? */
 313
 314         enable_phy_bypass_mode(enc10, true);
 315
 316         /* Program 80 bit custom pattern */
 317         {
 318                 uint16_t pattern_symbols[8];
 319
 320                 pattern_symbols[0] =
 321                         ((pattern[1] & 0x03) << 8) | pattern[0];
 322                 pattern_symbols[1] =
 323                         ((pattern[2] & 0x0f) << 6) | ((pattern[1] >> 2) & 0x3f);
 324                 pattern_symbols[2] =
 325                         ((pattern[3] & 0x3f) << 4) | ((pattern[2] >> 4) & 0x0f);
 326                 pattern_symbols[3] =
 327                         (pattern[4] << 2) | ((pattern[3] >> 6) & 0x03);
 328                 pattern_symbols[4] =
 329                         ((pattern[6] & 0x03) << 8) | pattern[5];
 330                 pattern_symbols[5] =
 331                         ((pattern[7] & 0x0f) << 6) | ((pattern[6] >> 2) & 0x3f);
 332                 pattern_symbols[6] =
 333                         ((pattern[8] & 0x3f) << 4) | ((pattern[7] >> 4) & 0x0f);
 334                 pattern_symbols[7] =
 335                         (pattern[9] << 2) | ((pattern[8] >> 6) & 0x03);
 336
 337                 program_pattern_symbols(enc10, pattern_symbols);
 338         }
 339
 340         /* Enable phy bypass mode to enable the test pattern */
 341
 342         enable_phy_bypass_mode(enc10, true);
 343 }
 344
 345 static void set_dp_phy_pattern_hbr2_compliance_cp2520_2(
 346         struct dcn10_link_encoder *enc10,
 347         unsigned int cp2520_pattern)
 348 {
 349
 350         /* previously there is a register DP_HBR2_EYE_PATTERN
 351          * that is enabled to get the pattern.
 352          * But it does not work with the latest spec change,
 353          * so we are programming the following registers manually.
 354          *
 355          * The following settings have been confirmed
 356          * by Nick Chorney and Sandra Liu
 357          */
 358
 359         /* Disable PHY Bypass mode to setup the test pattern */
 360
 361         enable_phy_bypass_mode(enc10, false);
 362
 363         /* Setup DIG encoder in DP SST mode */
 364         enc10->base.funcs->setup(&enc10->base, SIGNAL_TYPE_DISPLAY_PORT);
 365
 366         /* ensure normal panel mode. */
 367         setup_panel_mode(enc10, DP_PANEL_MODE_DEFAULT);
 368
 369         /* no vbid after BS (SR)
 370          * DP_LINK_FRAMING_CNTL changed history Sandra Liu
 371          * 11000260 / 11000104 / 110000FC
 372          */
 373         REG_UPDATE_3(DP_LINK_FRAMING_CNTL,
 374                         DP_IDLE_BS_INTERVAL, 0xFC,
 375                         DP_VBID_DISABLE, 1,
 376                         DP_VID_ENHANCED_FRAME_MODE, 1);
 377
 378         /* swap every BS with SR */
 379         REG_UPDATE(DP_DPHY_SCRAM_CNTL, DPHY_SCRAMBLER_BS_COUNT, 0);
 380
 381         /* select cp2520 patterns */
 382         if (REG(DP_DPHY_HBR2_PATTERN_CONTROL))
 383                 REG_UPDATE(DP_DPHY_HBR2_PATTERN_CONTROL,
 384                                 DP_DPHY_HBR2_PATTERN_CONTROL, cp2520_pattern);
 385         else
 386                 /* pre-DCE11 can only generate CP2520 pattern 2 */
 387                 ASSERT(cp2520_pattern == 2);
 388
 389         /* set link training complete */
 390         set_link_training_complete(enc10, true);
 391
 392         /* disable video stream */
 393         REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0);
 394
 395         /* Disable PHY Bypass mode to setup the test pattern */
 396         enable_phy_bypass_mode(enc10, false);
 397 }
 398
 399 static void set_dp_phy_pattern_passthrough_mode(
 400         struct dcn10_link_encoder *enc10,
 401         enum dp_panel_mode panel_mode)
 402 {
 403         /* program correct panel mode */
 404         setup_panel_mode(enc10, panel_mode);
 405
 406         /* restore LINK_FRAMING_CNTL and DPHY_SCRAMBLER_BS_COUNT
 407          * in case we were doing HBR2 compliance pattern before
 408          */
 409         REG_UPDATE_3(DP_LINK_FRAMING_CNTL,
 410                         DP_IDLE_BS_INTERVAL, 0x2000,
 411                         DP_VBID_DISABLE, 0,
 412                         DP_VID_ENHANCED_FRAME_MODE, 1);
 413
 414         REG_UPDATE(DP_DPHY_SCRAM_CNTL, DPHY_SCRAMBLER_BS_COUNT, 0x1FF);
 415
 416         /* set link training complete */
 417         set_link_training_complete(enc10, true);
 418
 419         /* Disable PHY Bypass mode to setup the test pattern */
 420         enable_phy_bypass_mode(enc10, false);
 421
 422         /* Disable PRBS mode */
 423         disable_prbs_mode(enc10);
 424 }
 425
 426 /* return value is bit-vector */
 427 static uint8_t get_frontend_source(
 428         enum engine_id engine)
 429 {
 430         switch (engine) {
 431         case ENGINE_ID_DIGA:
 432                 return DCN10_DIG_FE_SOURCE_SELECT_DIGA;
 433         case ENGINE_ID_DIGB:
 434                 return DCN10_DIG_FE_SOURCE_SELECT_DIGB;
 435         case ENGINE_ID_DIGC:
 436                 return DCN10_DIG_FE_SOURCE_SELECT_DIGC;
 437         case ENGINE_ID_DIGD:
 438                 return DCN10_DIG_FE_SOURCE_SELECT_DIGD;
 439         case ENGINE_ID_DIGE:
 440                 return DCN10_DIG_FE_SOURCE_SELECT_DIGE;
 441         case ENGINE_ID_DIGF:
 442                 return DCN10_DIG_FE_SOURCE_SELECT_DIGF;
 443         case ENGINE_ID_DIGG:
 444                 return DCN10_DIG_FE_SOURCE_SELECT_DIGG;
 445         default:
 446                 ASSERT_CRITICAL(false);
 447                 return DCN10_DIG_FE_SOURCE_SELECT_INVALID;
 448         }
 449 }
 450
 451 unsigned int dcn10_get_dig_frontend(struct link_encoder *enc)
 452 {
 453         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 454         int32_t value;
 455         enum engine_id result;
 456
 457         REG_GET(DIG_BE_CNTL, DIG_FE_SOURCE_SELECT, &value);
 458
 459         switch (value) {
 460         case DCN10_DIG_FE_SOURCE_SELECT_DIGA:
 461                 result = ENGINE_ID_DIGA;
 462                 break;
 463         case DCN10_DIG_FE_SOURCE_SELECT_DIGB:
 464                 result = ENGINE_ID_DIGB;
 465                 break;
 466         case DCN10_DIG_FE_SOURCE_SELECT_DIGC:
 467                 result = ENGINE_ID_DIGC;
 468                 break;
 469         case DCN10_DIG_FE_SOURCE_SELECT_DIGD:
 470                 result = ENGINE_ID_DIGD;
 471                 break;
 472         case DCN10_DIG_FE_SOURCE_SELECT_DIGE:
 473                 result = ENGINE_ID_DIGE;
 474                 break;
 475         case DCN10_DIG_FE_SOURCE_SELECT_DIGF:
 476                 result = ENGINE_ID_DIGF;
 477                 break;
 478         case DCN10_DIG_FE_SOURCE_SELECT_DIGG:
 479                 result = ENGINE_ID_DIGG;
 480                 break;
 481         default:
 482                 // invalid source select DIG
 483                 ASSERT(false);
 484                 result = ENGINE_ID_UNKNOWN;
 485         }
 486
 487         return result;
 488
 489 }
 490
 491 void enc1_configure_encoder(
 492         struct dcn10_link_encoder *enc10,
 493         const struct dc_link_settings *link_settings)
 494 {
 495         /* set number of lanes */
 496         REG_SET(DP_CONFIG, 0,
 497                         DP_UDI_LANES, link_settings->lane_count - LANE_COUNT_ONE);
 498
 499         /* setup scrambler */
 500         REG_UPDATE(DP_DPHY_SCRAM_CNTL, DPHY_SCRAMBLER_ADVANCE, 1);
 501 }
 502
 503 void dcn10_psr_program_dp_dphy_fast_training(struct link_encoder *enc,
 504                         bool exit_link_training_required)
 505 {
 506         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 507
 508         if (exit_link_training_required)
 509                 REG_UPDATE(DP_DPHY_FAST_TRAINING,
 510                                 DPHY_RX_FAST_TRAINING_CAPABLE, 1);
 511         else {
 512                 REG_UPDATE(DP_DPHY_FAST_TRAINING,
 513                                 DPHY_RX_FAST_TRAINING_CAPABLE, 0);
 514                 /*In DCE 11, we are able to pre-program a Force SR register
 515                  * to be able to trigger SR symbol after 5 idle patterns
 516                  * transmitted. Upon PSR Exit, DMCU can trigger
 517                  * DPHY_LOAD_BS_COUNT_START = 1. Upon writing 1 to
 518                  * DPHY_LOAD_BS_COUNT_START and the internal counter
 519                  * reaches DPHY_LOAD_BS_COUNT, the next BS symbol will be
 520                  * replaced by SR symbol once.
 521                  */
 522
 523                 REG_UPDATE(DP_DPHY_BS_SR_SWAP_CNTL, DPHY_LOAD_BS_COUNT, 0x5);
 524         }
 525 }
 526
 527 void dcn10_psr_program_secondary_packet(struct link_encoder *enc,
 528                         unsigned int sdp_transmit_line_num_deadline)
 529 {
 530         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 531
 532         REG_UPDATE_2(DP_SEC_CNTL1,
 533                 DP_SEC_GSP0_LINE_NUM, sdp_transmit_line_num_deadline,
 534                 DP_SEC_GSP0_PRIORITY, 1);
 535 }
 536
 537 bool dcn10_is_dig_enabled(struct link_encoder *enc)
 538 {
 539         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 540         uint32_t value;
 541
 542         REG_GET(DIG_BE_EN_CNTL, DIG_ENABLE, &value);
 543         return value;
 544 }
 545
 546 static void link_encoder_disable(struct dcn10_link_encoder *enc10)
 547 {
 548         /* reset training pattern */
 549         REG_SET(DP_DPHY_TRAINING_PATTERN_SEL, 0,
 550                         DPHY_TRAINING_PATTERN_SEL, 0);
 551
 552         /* reset training complete */
 553         REG_UPDATE(DP_LINK_CNTL, DP_LINK_TRAINING_COMPLETE, 0);
 554
 555         /* reset panel mode */
 556         setup_panel_mode(enc10, DP_PANEL_MODE_DEFAULT);
 557 }
 558
 559 static void hpd_initialize(
 560         struct dcn10_link_encoder *enc10)
 561 {
 562         /* Associate HPD with DIG_BE */
 563         enum hpd_source_id hpd_source = enc10->base.hpd_source;
 564
 565         REG_UPDATE(DIG_BE_CNTL, DIG_HPD_SELECT, hpd_source);
 566 }
 567
 568 bool dcn10_link_encoder_validate_dvi_output(
 569         const struct dcn10_link_encoder *enc10,
 570         enum signal_type connector_signal,
 571         enum signal_type signal,
 572         const struct dc_crtc_timing *crtc_timing)
 573 {
 574         uint32_t max_pixel_clock = TMDS_MAX_PIXEL_CLOCK;
 575
 576         if (signal == SIGNAL_TYPE_DVI_DUAL_LINK)
 577                 max_pixel_clock *= 2;
 578
 579         /* This handles the case of HDMI downgrade to DVI we don't want to
 580          * we don't want to cap the pixel clock if the DDI is not DVI.
 581          */
 582         if (connector_signal != SIGNAL_TYPE_DVI_DUAL_LINK &&
 583                         connector_signal != SIGNAL_TYPE_DVI_SINGLE_LINK)
 584                 max_pixel_clock = enc10->base.features.max_hdmi_pixel_clock;
 585
 586         /* DVI only support RGB pixel encoding */
 587         if (crtc_timing->pixel_encoding != PIXEL_ENCODING_RGB)
 588                 return false;
 589
 590         /*connect DVI via adpater's HDMI connector*/
 591         if ((connector_signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
 592                 connector_signal == SIGNAL_TYPE_HDMI_TYPE_A) &&
 593                 signal != SIGNAL_TYPE_HDMI_TYPE_A &&
 594                 crtc_timing->pix_clk_100hz > (TMDS_MAX_PIXEL_CLOCK * 10))
 595                 return false;
 596         if (crtc_timing->pix_clk_100hz < (TMDS_MIN_PIXEL_CLOCK * 10))
 597                 return false;
 598
 599         if (crtc_timing->pix_clk_100hz > (max_pixel_clock * 10))
 600                 return false;
 601
 602         /* DVI supports 6/8bpp single-link and 10/16bpp dual-link */
 603         switch (crtc_timing->display_color_depth) {
 604         case COLOR_DEPTH_666:
 605         case COLOR_DEPTH_888:
 606         break;
 607         case COLOR_DEPTH_101010:
 608         case COLOR_DEPTH_161616:
 609                 if (signal != SIGNAL_TYPE_DVI_DUAL_LINK)
 610                         return false;
 611         break;
 612         default:
 613                 return false;
 614         }
 615
 616         return true;
 617 }
 618
 619 static bool dcn10_link_encoder_validate_hdmi_output(
 620         const struct dcn10_link_encoder *enc10,
 621         const struct dc_crtc_timing *crtc_timing,
 622         const struct dc_edid_caps *edid_caps,
 623         int adjusted_pix_clk_100hz)
 624 {
 625         enum dc_color_depth max_deep_color =
 626                         enc10->base.features.max_hdmi_deep_color;
 627
 628         // check pixel clock against edid specified max TMDS clk
 629         if (edid_caps->max_tmds_clk_mhz != 0 &&
 630                         adjusted_pix_clk_100hz > edid_caps->max_tmds_clk_mhz * 10000)
 631                 return false;
 632
 633         if (max_deep_color < crtc_timing->display_color_depth)
 634                 return false;
 635
 636         if (crtc_timing->display_color_depth < COLOR_DEPTH_888)
 637                 return false;
 638         if (adjusted_pix_clk_100hz < (TMDS_MIN_PIXEL_CLOCK * 10))
 639                 return false;
 640
 641         if ((adjusted_pix_clk_100hz == 0) ||
 642                 (adjusted_pix_clk_100hz > (enc10->base.features.max_hdmi_pixel_clock * 10)))
 643                 return false;
 644
 645         /* DCE11 HW does not support 420 */
 646         if (!enc10->base.features.hdmi_ycbcr420_supported &&
 647                         crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)
 648                 return false;
 649
 650         if (!enc10->base.features.flags.bits.HDMI_6GB_EN &&
 651                 adjusted_pix_clk_100hz >= 3000000)
 652                 return false;
 653         if (enc10->base.ctx->dc->debug.hdmi20_disable &&
 654                 crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)
 655                 return false;
 656         return true;
 657 }
 658
 659 bool dcn10_link_encoder_validate_dp_output(
 660         const struct dcn10_link_encoder *enc10,
 661         const struct dc_crtc_timing *crtc_timing)
 662 {
 663         if (crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) {
 664                 if (!enc10->base.features.dp_ycbcr420_supported)
 665                         return false;
 666         }
 667
 668         return true;
 669 }
 670
 671 void dcn10_link_encoder_construct(
 672         struct dcn10_link_encoder *enc10,
 673         const struct encoder_init_data *init_data,
 674         const struct encoder_feature_support *enc_features,
 675         const struct dcn10_link_enc_registers *link_regs,
 676         const struct dcn10_link_enc_aux_registers *aux_regs,
 677         const struct dcn10_link_enc_hpd_registers *hpd_regs,
 678         const struct dcn10_link_enc_shift *link_shift,
 679         const struct dcn10_link_enc_mask *link_mask)
 680 {
 681         struct bp_encoder_cap_info bp_cap_info = {0};
 682         const struct dc_vbios_funcs *bp_funcs = init_data->ctx->dc_bios->funcs;
 683         enum bp_result result = BP_RESULT_OK;
 684
 685         enc10->base.funcs = &dcn10_lnk_enc_funcs;
 686         enc10->base.ctx = init_data->ctx;
 687         enc10->base.id = init_data->encoder;
 688
 689         enc10->base.hpd_source = init_data->hpd_source;
 690         enc10->base.connector = init_data->connector;
 691
 692         enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;
 693
 694         enc10->base.features = *enc_features;
 695
 696         enc10->base.transmitter = init_data->transmitter;
 697
 698         /* set the flag to indicate whether driver poll the I2C data pin
 699          * while doing the DP sink detect
 700          */
 701
 702 /*      if (dal_adapter_service_is_feature_supported(as,
 703                 FEATURE_DP_SINK_DETECT_POLL_DATA_PIN))
 704                 enc10->base.features.flags.bits.
 705                         DP_SINK_DETECT_POLL_DATA_PIN = true;*/
 706
 707         enc10->base.output_signals =
 708                 SIGNAL_TYPE_DVI_SINGLE_LINK |
 709                 SIGNAL_TYPE_DVI_DUAL_LINK |
 710                 SIGNAL_TYPE_LVDS |
 711                 SIGNAL_TYPE_DISPLAY_PORT |
 712                 SIGNAL_TYPE_DISPLAY_PORT_MST |
 713                 SIGNAL_TYPE_EDP |
 714                 SIGNAL_TYPE_HDMI_TYPE_A;
 715
 716         /* For DCE 8.0 and 8.1, by design, UNIPHY is hardwired to DIG_BE.
 717          * SW always assign DIG_FE 1:1 mapped to DIG_FE for non-MST UNIPHY.
 718          * SW assign DIG_FE to non-MST UNIPHY first and MST last. So prefer
 719          * DIG is per UNIPHY and used by SST DP, eDP, HDMI, DVI and LVDS.
 720          * Prefer DIG assignment is decided by board design.
 721          * For DCE 8.0, there are only max 6 UNIPHYs, we assume board design
 722          * and VBIOS will filter out 7 UNIPHY for DCE 8.0.
 723          * By this, adding DIGG should not hurt DCE 8.0.
 724          * This will let DCE 8.1 share DCE 8.0 as much as possible
 725          */
 726
 727         enc10->link_regs = link_regs;
 728         enc10->aux_regs = aux_regs;
 729         enc10->hpd_regs = hpd_regs;
 730         enc10->link_shift = link_shift;
 731         enc10->link_mask = link_mask;
 732
 733         switch (enc10->base.transmitter) {
 734         case TRANSMITTER_UNIPHY_A:
 735                 enc10->base.preferred_engine = ENGINE_ID_DIGA;
 736         break;
 737         case TRANSMITTER_UNIPHY_B:
 738                 enc10->base.preferred_engine = ENGINE_ID_DIGB;
 739         break;
 740         case TRANSMITTER_UNIPHY_C:
 741                 enc10->base.preferred_engine = ENGINE_ID_DIGC;
 742         break;
 743         case TRANSMITTER_UNIPHY_D:
 744                 enc10->base.preferred_engine = ENGINE_ID_DIGD;
 745         break;
 746         case TRANSMITTER_UNIPHY_E:
 747                 enc10->base.preferred_engine = ENGINE_ID_DIGE;
 748         break;
 749         case TRANSMITTER_UNIPHY_F:
 750                 enc10->base.preferred_engine = ENGINE_ID_DIGF;
 751         break;
 752         case TRANSMITTER_UNIPHY_G:
 753                 enc10->base.preferred_engine = ENGINE_ID_DIGG;
 754         break;
 755         default:
 756                 ASSERT_CRITICAL(false);
 757                 enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;
 758         }
 759
 760         /* default to one to mirror Windows behavior */
 761         enc10->base.features.flags.bits.HDMI_6GB_EN = 1;
 762
 763         result = bp_funcs->get_encoder_cap_info(enc10->base.ctx->dc_bios,
 764                                                 enc10->base.id, &bp_cap_info);
 765
 766         /* Override features with DCE-specific values */
 767         if (result == BP_RESULT_OK) {
 768                 enc10->base.features.flags.bits.IS_HBR2_CAPABLE =
 769                                 bp_cap_info.DP_HBR2_EN;
 770                 enc10->base.features.flags.bits.IS_HBR3_CAPABLE =
 771                                 bp_cap_info.DP_HBR3_EN;
 772                 enc10->base.features.flags.bits.HDMI_6GB_EN = bp_cap_info.HDMI_6GB_EN;
 773                 enc10->base.features.flags.bits.DP_IS_USB_C =
 774                                 bp_cap_info.DP_IS_USB_C;
 775         } else {
 776                 DC_LOG_WARNING("%s: Failed to get encoder_cap_info from VBIOS with error code %d!\n",
 777                                 __func__,
 778                                 result);
 779         }
 780         if (enc10->base.ctx->dc->debug.hdmi20_disable) {
 781                 enc10->base.features.flags.bits.HDMI_6GB_EN = 0;
 782         }
 783 }
 784
 785 bool dcn10_link_encoder_validate_output_with_stream(
 786         struct link_encoder *enc,
 787         const struct dc_stream_state *stream)
 788 {
 789         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 790         bool is_valid;
 791
 792         //if SCDC (340-600MHz) is disabled, set to HDMI 1.4 timing limit
 793         if (stream->sink->edid_caps.panel_patch.skip_scdc_overwrite &&
 794                 enc10->base.features.max_hdmi_pixel_clock > 300000)
 795                 enc10->base.features.max_hdmi_pixel_clock = 300000;
 796
 797         switch (stream->signal) {
 798         case SIGNAL_TYPE_DVI_SINGLE_LINK:
 799         case SIGNAL_TYPE_DVI_DUAL_LINK:
 800                 is_valid = dcn10_link_encoder_validate_dvi_output(
 801                         enc10,
 802                         stream->link->connector_signal,
 803                         stream->signal,
 804                         &stream->timing);
 805         break;
 806         case SIGNAL_TYPE_HDMI_TYPE_A:
 807                 is_valid = dcn10_link_encoder_validate_hdmi_output(
 808                                 enc10,
 809                                 &stream->timing,
 810                                 &stream->sink->edid_caps,
 811                                 stream->phy_pix_clk * 10);
 812         break;
 813         case SIGNAL_TYPE_DISPLAY_PORT:
 814         case SIGNAL_TYPE_DISPLAY_PORT_MST:
 815                 is_valid = dcn10_link_encoder_validate_dp_output(
 816                                         enc10, &stream->timing);
 817         break;
 818         case SIGNAL_TYPE_EDP:
 819                 is_valid = (stream->timing.pixel_encoding == PIXEL_ENCODING_RGB) ? true : false;
 820         break;
 821         case SIGNAL_TYPE_VIRTUAL:
 822                 is_valid = true;
 823                 break;
 824         default:
 825                 is_valid = false;
 826         break;
 827         }
 828
 829         return is_valid;
 830 }
 831
 832 void dcn10_link_encoder_hw_init(
 833         struct link_encoder *enc)
 834 {
 835         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 836         struct bp_transmitter_control cntl = { 0 };
 837         enum bp_result result;
 838
 839         cntl.action = TRANSMITTER_CONTROL_INIT;
 840         cntl.engine_id = ENGINE_ID_UNKNOWN;
 841         cntl.transmitter = enc10->base.transmitter;
 842         cntl.connector_obj_id = enc10->base.connector;
 843         cntl.lanes_number = LANE_COUNT_FOUR;
 844         cntl.coherent = false;
 845         cntl.hpd_sel = enc10->base.hpd_source;
 846
 847         if (enc10->base.connector.id == CONNECTOR_ID_EDP)
 848                 cntl.signal = SIGNAL_TYPE_EDP;
 849
 850         result = link_transmitter_control(enc10, &cntl);
 851
 852         if (result != BP_RESULT_OK) {
 853                 DC_LOG_ERROR("%s: Failed to execute VBIOS command table!\n",
 854                         __func__);
 855                 BREAK_TO_DEBUGGER();
 856                 return;
 857         }
 858
 859         if (enc10->base.connector.id == CONNECTOR_ID_LVDS) {
 860                 cntl.action = TRANSMITTER_CONTROL_BACKLIGHT_BRIGHTNESS;
 861
 862                 result = link_transmitter_control(enc10, &cntl);
 863
 864                 ASSERT(result == BP_RESULT_OK);
 865
 866         }
 867         dcn10_aux_initialize(enc10);
 868
 869         /* reinitialize HPD.
 870          * hpd_initialize() will pass DIG_FE id to HW context.
 871          * All other routine within HW context will use fe_engine_offset
 872          * as DIG_FE id even caller pass DIG_FE id.
 873          * So this routine must be called first.
 874          */
 875         hpd_initialize(enc10);
 876 }
 877
 878 void dcn10_link_encoder_destroy(struct link_encoder **enc)
 879 {
 880         kfree(TO_DCN10_LINK_ENC(*enc));
 881         *enc = NULL;
 882 }
 883
 884 void dcn10_link_encoder_setup(
 885         struct link_encoder *enc,
 886         enum signal_type signal)
 887 {
 888         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 889
 890         switch (signal) {
 891         case SIGNAL_TYPE_EDP:
 892         case SIGNAL_TYPE_DISPLAY_PORT:
 893                 /* DP SST */
 894                 REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 0);
 895                 break;
 896         case SIGNAL_TYPE_LVDS:
 897                 /* LVDS */
 898                 REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 1);
 899                 break;
 900         case SIGNAL_TYPE_DVI_SINGLE_LINK:
 901         case SIGNAL_TYPE_DVI_DUAL_LINK:
 902                 /* TMDS-DVI */
 903                 REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 2);
 904                 break;
 905         case SIGNAL_TYPE_HDMI_TYPE_A:
 906                 /* TMDS-HDMI */
 907                 REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 3);
 908                 break;
 909         case SIGNAL_TYPE_DISPLAY_PORT_MST:
 910                 /* DP MST */
 911                 REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 5);
 912                 break;
 913         default:
 914                 ASSERT_CRITICAL(false);
 915                 /* invalid mode ! */
 916                 break;
 917         }
 918
 919 }
 920
 921 /* TODO: still need depth or just pass in adjusted pixel clock? */
 922 void dcn10_link_encoder_enable_tmds_output(
 923         struct link_encoder *enc,
 924         enum clock_source_id clock_source,
 925         enum dc_color_depth color_depth,
 926         enum signal_type signal,
 927         uint32_t pixel_clock)
 928 {
 929         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 930         struct bp_transmitter_control cntl = { 0 };
 931         enum bp_result result;
 932
 933         /* Enable the PHY */
 934
 935         cntl.action = TRANSMITTER_CONTROL_ENABLE;
 936         cntl.engine_id = enc->preferred_engine;
 937         cntl.transmitter = enc10->base.transmitter;
 938         cntl.pll_id = clock_source;
 939         cntl.signal = signal;
 940         if (cntl.signal == SIGNAL_TYPE_DVI_DUAL_LINK)
 941                 cntl.lanes_number = 8;
 942         else
 943                 cntl.lanes_number = 4;
 944
 945         cntl.hpd_sel = enc10->base.hpd_source;
 946
 947         cntl.pixel_clock = pixel_clock;
 948         cntl.color_depth = color_depth;
 949
 950         result = link_transmitter_control(enc10, &cntl);
 951
 952         if (result != BP_RESULT_OK) {
 953                 DC_LOG_ERROR("%s: Failed to execute VBIOS command table!\n",
 954                         __func__);
 955                 BREAK_TO_DEBUGGER();
 956         }
 957 }
 958
 959 void dcn10_link_encoder_enable_tmds_output_with_clk_pattern_wa(
 960         struct link_encoder *enc,
 961         enum clock_source_id clock_source,
 962         enum dc_color_depth color_depth,
 963         enum signal_type signal,
 964         uint32_t pixel_clock)
 965 {
 966         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 967
 968         dcn10_link_encoder_enable_tmds_output(
 969                 enc, clock_source, color_depth, signal, pixel_clock);
 970
 971         REG_UPDATE(DIG_CLOCK_PATTERN, DIG_CLOCK_PATTERN, 0x1F);
 972 }
 973
 974 /* enables DP PHY output */
 975 void dcn10_link_encoder_enable_dp_output(
 976         struct link_encoder *enc,
 977         const struct dc_link_settings *link_settings,
 978         enum clock_source_id clock_source)
 979 {
 980         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 981         struct bp_transmitter_control cntl = { 0 };
 982         enum bp_result result;
 983
 984         /* Enable the PHY */
 985
 986         /* number_of_lanes is used for pixel clock adjust,
 987          * but it's not passed to asic_control.
 988          * We need to set number of lanes manually.
 989          */
 990         enc1_configure_encoder(enc10, link_settings);
 991
 992         cntl.action = TRANSMITTER_CONTROL_ENABLE;
 993         cntl.engine_id = enc->preferred_engine;
 994         cntl.transmitter = enc10->base.transmitter;
 995         cntl.pll_id = clock_source;
 996         cntl.signal = SIGNAL_TYPE_DISPLAY_PORT;
 997         cntl.lanes_number = link_settings->lane_count;
 998         cntl.hpd_sel = enc10->base.hpd_source;
 999         cntl.pixel_clock = link_settings->link_rate
1000                                                 * LINK_RATE_REF_FREQ_IN_KHZ;
1001         /* TODO: check if undefined works */
1002         cntl.color_depth = COLOR_DEPTH_UNDEFINED;
1003
1004         result = link_transmitter_control(enc10, &cntl);
1005
1006         if (result != BP_RESULT_OK) {
1007                 DC_LOG_ERROR("%s: Failed to execute VBIOS command table!\n",
1008                         __func__);
1009                 BREAK_TO_DEBUGGER();
1010         }
1011 }
1012
1013 /* enables DP PHY output in MST mode */
1014 void dcn10_link_encoder_enable_dp_mst_output(
1015         struct link_encoder *enc,
1016         const struct dc_link_settings *link_settings,
1017         enum clock_source_id clock_source)
1018 {
1019         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1020         struct bp_transmitter_control cntl = { 0 };
1021         enum bp_result result;
1022
1023         /* Enable the PHY */
1024
1025         /* number_of_lanes is used for pixel clock adjust,
1026          * but it's not passed to asic_control.
1027          * We need to set number of lanes manually.
1028          */
1029         enc1_configure_encoder(enc10, link_settings);
1030
1031         cntl.action = TRANSMITTER_CONTROL_ENABLE;
1032         cntl.engine_id = ENGINE_ID_UNKNOWN;
1033         cntl.transmitter = enc10->base.transmitter;
1034         cntl.pll_id = clock_source;
1035         cntl.signal = SIGNAL_TYPE_DISPLAY_PORT_MST;
1036         cntl.lanes_number = link_settings->lane_count;
1037         cntl.hpd_sel = enc10->base.hpd_source;
1038         cntl.pixel_clock = link_settings->link_rate
1039                                                 * LINK_RATE_REF_FREQ_IN_KHZ;
1040         /* TODO: check if undefined works */
1041         cntl.color_depth = COLOR_DEPTH_UNDEFINED;
1042
1043         result = link_transmitter_control(enc10, &cntl);
1044
1045         if (result != BP_RESULT_OK) {
1046                 DC_LOG_ERROR("%s: Failed to execute VBIOS command table!\n",
1047                         __func__);
1048                 BREAK_TO_DEBUGGER();
1049         }
1050 }
1051 /*
1052  * @brief
1053  * Disable transmitter and its encoder
1054  */
1055 void dcn10_link_encoder_disable_output(
1056         struct link_encoder *enc,
1057         enum signal_type signal)
1058 {
1059         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1060         struct bp_transmitter_control cntl = { 0 };
1061         enum bp_result result;
1062
1063         if (!dcn10_is_dig_enabled(enc)) {
1064                 /* OF_SKIP_POWER_DOWN_INACTIVE_ENCODER */
1065         /*in DP_Alt_No_Connect case, we turn off the dig already,
1066         after excuation the PHY w/a sequence, not allow touch PHY any more*/
1067                 return;
1068         }
1069         /* Power-down RX and disable GPU PHY should be paired.
1070          * Disabling PHY without powering down RX may cause
1071          * symbol lock loss, on which we will get DP Sink interrupt.
1072          */
1073
1074         /* There is a case for the DP active dongles
1075          * where we want to disable the PHY but keep RX powered,
1076          * for those we need to ignore DP Sink interrupt
1077          * by checking lane count that has been set
1078          * on the last do_enable_output().
1079          */
1080
1081         /* disable transmitter */
1082         cntl.action = TRANSMITTER_CONTROL_DISABLE;
1083         cntl.transmitter = enc10->base.transmitter;
1084         cntl.hpd_sel = enc10->base.hpd_source;
1085         cntl.signal = signal;
1086         cntl.connector_obj_id = enc10->base.connector;
1087
1088         result = link_transmitter_control(enc10, &cntl);
1089
1090         if (result != BP_RESULT_OK) {
1091                 DC_LOG_ERROR("%s: Failed to execute VBIOS command table!\n",
1092                         __func__);
1093                 BREAK_TO_DEBUGGER();
1094                 return;
1095         }
1096
1097         /* disable encoder */
1098         if (dc_is_dp_signal(signal))
1099                 link_encoder_disable(enc10);
1100 }
1101
1102 void dcn10_link_encoder_dp_set_lane_settings(
1103         struct link_encoder *enc,
1104         const struct link_training_settings *link_settings)
1105 {
1106         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1107         union dpcd_training_lane_set training_lane_set = { { 0 } };
1108         int32_t lane = 0;
1109         struct bp_transmitter_control cntl = { 0 };
1110
1111         if (!link_settings) {
1112                 BREAK_TO_DEBUGGER();
1113                 return;
1114         }
1115
1116         cntl.action = TRANSMITTER_CONTROL_SET_VOLTAGE_AND_PREEMPASIS;
1117         cntl.transmitter = enc10->base.transmitter;
1118         cntl.connector_obj_id = enc10->base.connector;
1119         cntl.lanes_number = link_settings->link_settings.lane_count;
1120         cntl.hpd_sel = enc10->base.hpd_source;
1121         cntl.pixel_clock = link_settings->link_settings.link_rate *
1122                                                 LINK_RATE_REF_FREQ_IN_KHZ;
1123
1124         for (lane = 0; lane < link_settings->link_settings.lane_count; lane++) {
1125                 /* translate lane settings */
1126
1127                 training_lane_set.bits.VOLTAGE_SWING_SET =
1128                         link_settings->lane_settings[lane].VOLTAGE_SWING;
1129                 training_lane_set.bits.PRE_EMPHASIS_SET =
1130                         link_settings->lane_settings[lane].PRE_EMPHASIS;
1131
1132                 /* post cursor 2 setting only applies to HBR2 link rate */
1133                 if (link_settings->link_settings.link_rate == LINK_RATE_HIGH2) {
1134                         /* this is passed to VBIOS
1135                          * to program post cursor 2 level
1136                          */
1137                         training_lane_set.bits.POST_CURSOR2_SET =
1138                                 link_settings->lane_settings[lane].POST_CURSOR2;
1139                 }
1140
1141                 cntl.lane_select = lane;
1142                 cntl.lane_settings = training_lane_set.raw;
1143
1144                 /* call VBIOS table to set voltage swing and pre-emphasis */
1145                 link_transmitter_control(enc10, &cntl);
1146         }
1147 }
1148
1149 /* set DP PHY test and training patterns */
1150 void dcn10_link_encoder_dp_set_phy_pattern(
1151         struct link_encoder *enc,
1152         const struct encoder_set_dp_phy_pattern_param *param)
1153 {
1154         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1155
1156         switch (param->dp_phy_pattern) {
1157         case DP_TEST_PATTERN_TRAINING_PATTERN1:
1158                 dcn10_link_encoder_set_dp_phy_pattern_training_pattern(enc, 0);
1159                 break;
1160         case DP_TEST_PATTERN_TRAINING_PATTERN2:
1161                 dcn10_link_encoder_set_dp_phy_pattern_training_pattern(enc, 1);
1162                 break;
1163         case DP_TEST_PATTERN_TRAINING_PATTERN3:
1164                 dcn10_link_encoder_set_dp_phy_pattern_training_pattern(enc, 2);
1165                 break;
1166         case DP_TEST_PATTERN_TRAINING_PATTERN4:
1167                 dcn10_link_encoder_set_dp_phy_pattern_training_pattern(enc, 3);
1168                 break;
1169         case DP_TEST_PATTERN_D102:
1170                 set_dp_phy_pattern_d102(enc10);
1171                 break;
1172         case DP_TEST_PATTERN_SYMBOL_ERROR:
1173                 set_dp_phy_pattern_symbol_error(enc10);
1174                 break;
1175         case DP_TEST_PATTERN_PRBS7:
1176                 set_dp_phy_pattern_prbs7(enc10);
1177                 break;
1178         case DP_TEST_PATTERN_80BIT_CUSTOM:
1179                 set_dp_phy_pattern_80bit_custom(
1180                         enc10, param->custom_pattern);
1181                 break;
1182         case DP_TEST_PATTERN_CP2520_1:
1183                 set_dp_phy_pattern_hbr2_compliance_cp2520_2(enc10, 1);
1184                 break;
1185         case DP_TEST_PATTERN_CP2520_2:
1186                 set_dp_phy_pattern_hbr2_compliance_cp2520_2(enc10, 2);
1187                 break;
1188         case DP_TEST_PATTERN_CP2520_3:
1189                 set_dp_phy_pattern_hbr2_compliance_cp2520_2(enc10, 3);
1190                 break;
1191         case DP_TEST_PATTERN_VIDEO_MODE: {
1192                 set_dp_phy_pattern_passthrough_mode(
1193                         enc10, param->dp_panel_mode);
1194                 break;
1195         }
1196
1197         default:
1198                 /* invalid phy pattern */
1199                 ASSERT_CRITICAL(false);
1200                 break;
1201         }
1202 }
1203
1204 static void fill_stream_allocation_row_info(
1205         const struct link_mst_stream_allocation *stream_allocation,
1206         uint32_t *src,
1207         uint32_t *slots)
1208 {
1209         const struct stream_encoder *stream_enc = stream_allocation->stream_enc;
1210
1211         if (stream_enc) {
1212                 *src = stream_enc->id;
1213                 *slots = stream_allocation->slot_count;
1214         } else {
1215                 *src = 0;
1216                 *slots = 0;
1217         }
1218 }
1219
1220 /* programs DP MST VC payload allocation */
1221 void dcn10_link_encoder_update_mst_stream_allocation_table(
1222         struct link_encoder *enc,
1223         const struct link_mst_stream_allocation_table *table)
1224 {
1225         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1226         uint32_t value0 = 0;
1227         uint32_t value1 = 0;
1228         uint32_t value2 = 0;
1229         uint32_t slots = 0;
1230         uint32_t src = 0;
1231         uint32_t retries = 0;
1232
1233         /* For CZ, there are only 3 pipes. So Virtual channel is up 3.*/
1234
1235         /* --- Set MSE Stream Attribute -
1236          * Setup VC Payload Table on Tx Side,
1237          * Issue allocation change trigger
1238          * to commit payload on both tx and rx side
1239          */
1240
1241         /* we should clean-up table each time */
1242
1243         if (table->stream_count >= 1) {
1244                 fill_stream_allocation_row_info(
1245                         &table->stream_allocations[0],
1246                         &src,
1247                         &slots);
1248         } else {
1249                 src = 0;
1250                 slots = 0;
1251         }
1252
1253         REG_UPDATE_2(DP_MSE_SAT0,
1254                         DP_MSE_SAT_SRC0, src,
1255                         DP_MSE_SAT_SLOT_COUNT0, slots);
1256
1257         if (table->stream_count >= 2) {
1258                 fill_stream_allocation_row_info(
1259                         &table->stream_allocations[1],
1260                         &src,
1261                         &slots);
1262         } else {
1263                 src = 0;
1264                 slots = 0;
1265         }
1266
1267         REG_UPDATE_2(DP_MSE_SAT0,
1268                         DP_MSE_SAT_SRC1, src,
1269                         DP_MSE_SAT_SLOT_COUNT1, slots);
1270
1271         if (table->stream_count >= 3) {
1272                 fill_stream_allocation_row_info(
1273                         &table->stream_allocations[2],
1274                         &src,
1275                         &slots);
1276         } else {
1277                 src = 0;
1278                 slots = 0;
1279         }
1280
1281         REG_UPDATE_2(DP_MSE_SAT1,
1282                         DP_MSE_SAT_SRC2, src,
1283                         DP_MSE_SAT_SLOT_COUNT2, slots);
1284
1285         if (table->stream_count >= 4) {
1286                 fill_stream_allocation_row_info(
1287                         &table->stream_allocations[3],
1288                         &src,
1289                         &slots);
1290         } else {
1291                 src = 0;
1292                 slots = 0;
1293         }
1294
1295         REG_UPDATE_2(DP_MSE_SAT1,
1296                         DP_MSE_SAT_SRC3, src,
1297                         DP_MSE_SAT_SLOT_COUNT3, slots);
1298
1299         /* --- wait for transaction finish */
1300
1301         /* send allocation change trigger (ACT) ?
1302          * this step first sends the ACT,
1303          * then double buffers the SAT into the hardware
1304          * making the new allocation active on the DP MST mode link
1305          */
1306
1307         /* DP_MSE_SAT_UPDATE:
1308          * 0 - No Action
1309          * 1 - Update SAT with trigger
1310          * 2 - Update SAT without trigger
1311          */
1312         REG_UPDATE(DP_MSE_SAT_UPDATE,
1313                         DP_MSE_SAT_UPDATE, 1);
1314
1315         /* wait for update to complete
1316          * (i.e. DP_MSE_SAT_UPDATE field is reset to 0)
1317          * then wait for the transmission
1318          * of at least 16 MTP headers on immediate local link.
1319          * i.e. DP_MSE_16_MTP_KEEPOUT field (read only) is reset to 0
1320          * a value of 1 indicates that DP MST mode
1321          * is in the 16 MTP keepout region after a VC has been added.
1322          * MST stream bandwidth (VC rate) can be configured
1323          * after this bit is cleared
1324          */
1325         do {
1326                 udelay(10);
1327
1328                 value0 = REG_READ(DP_MSE_SAT_UPDATE);
1329
1330                 REG_GET(DP_MSE_SAT_UPDATE,
1331                                 DP_MSE_SAT_UPDATE, &value1);
1332
1333                 REG_GET(DP_MSE_SAT_UPDATE,
1334                                 DP_MSE_16_MTP_KEEPOUT, &value2);
1335
1336                 /* bit field DP_MSE_SAT_UPDATE is set to 1 already */
1337                 if (!value1 && !value2)
1338                         break;
1339                 ++retries;
1340         } while (retries < DP_MST_UPDATE_MAX_RETRY);
1341 }
1342
1343 void dcn10_link_encoder_connect_dig_be_to_fe(
1344         struct link_encoder *enc,
1345         enum engine_id engine,
1346         bool connect)
1347 {
1348         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1349         uint32_t field;
1350
1351         if (engine != ENGINE_ID_UNKNOWN) {
1352
1353                 REG_GET(DIG_BE_CNTL, DIG_FE_SOURCE_SELECT, &field);
1354
1355                 if (connect)
1356                         field |= get_frontend_source(engine);
1357                 else
1358                         field &= ~get_frontend_source(engine);
1359
1360                 REG_UPDATE(DIG_BE_CNTL, DIG_FE_SOURCE_SELECT, field);
1361         }
1362 }
1363
1364
1365 #define HPD_REG(reg)\
1366         (enc10->hpd_regs->reg)
1367
1368 #define HPD_REG_READ(reg_name) \
1369                 dm_read_reg(CTX, HPD_REG(reg_name))
1370
1371 #define HPD_REG_UPDATE_N(reg_name, n, ...)      \
1372                 generic_reg_update_ex(CTX, \
1373                                 HPD_REG(reg_name), \
1374                                 n, __VA_ARGS__)
1375
1376 #define HPD_REG_UPDATE(reg_name, field, val)    \
1377                 HPD_REG_UPDATE_N(reg_name, 1, \
1378                                 FN(reg_name, field), val)
1379
1380 void dcn10_link_encoder_enable_hpd(struct link_encoder *enc)
1381 {
1382         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1383
1384         HPD_REG_UPDATE(DC_HPD_CONTROL,
1385                         DC_HPD_EN, 1);
1386 }
1387
1388 void dcn10_link_encoder_disable_hpd(struct link_encoder *enc)
1389 {
1390         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1391
1392         HPD_REG_UPDATE(DC_HPD_CONTROL,
1393                         DC_HPD_EN, 0);
1394 }
1395
1396 #define AUX_REG(reg)\
1397         (enc10->aux_regs->reg)
1398
1399 #define AUX_REG_READ(reg_name) \
1400                 dm_read_reg(CTX, AUX_REG(reg_name))
1401
1402 #define AUX_REG_UPDATE_N(reg_name, n, ...)      \
1403                 generic_reg_update_ex(CTX, \
1404                                 AUX_REG(reg_name), \
1405                                 n, __VA_ARGS__)
1406
1407 #define AUX_REG_UPDATE(reg_name, field, val)    \
1408                 AUX_REG_UPDATE_N(reg_name, 1, \
1409                                 FN(reg_name, field), val)
1410
1411 #define AUX_REG_UPDATE_2(reg, f1, v1, f2, v2)   \
1412                 AUX_REG_UPDATE_N(reg, 2,\
1413                                 FN(reg, f1), v1,\
1414                                 FN(reg, f2), v2)
1415
1416 void dcn10_aux_initialize(struct dcn10_link_encoder *enc10)
1417 {
1418         enum hpd_source_id hpd_source = enc10->base.hpd_source;
1419
1420         AUX_REG_UPDATE_2(AUX_CONTROL,
1421                         AUX_HPD_SEL, hpd_source,
1422                         AUX_LS_READ_EN, 0);
1423
1424         /* 1/4 window (the maximum allowed) */
1425         AUX_REG_UPDATE(AUX_DPHY_RX_CONTROL0,
1426                         AUX_RX_RECEIVE_WINDOW, 0);
1427 }
1428
1429 enum signal_type dcn10_get_dig_mode(
1430         struct link_encoder *enc)
1431 {
1432         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
1433         uint32_t value;
1434         REG_GET(DIG_BE_CNTL, DIG_MODE, &value);
1435         switch (value) {
1436         case 1:
1437                 return SIGNAL_TYPE_DISPLAY_PORT;
1438         case 2:
1439                 return SIGNAL_TYPE_DVI_SINGLE_LINK;
1440         case 3:
1441                 return SIGNAL_TYPE_HDMI_TYPE_A;
1442         case 5:
1443                 return SIGNAL_TYPE_DISPLAY_PORT_MST;
1444         default:
1445                 return SIGNAL_TYPE_NONE;
1446         }
1447         return SIGNAL_TYPE_NONE;
1448 }
1449
1450 void dcn10_link_encoder_get_max_link_cap(struct link_encoder *enc,
1451         struct dc_link_settings *link_settings)
1452 {
1453         /* Set Default link settings */
1454         struct dc_link_settings max_link_cap = {LANE_COUNT_FOUR, LINK_RATE_HIGH,
1455                         LINK_SPREAD_05_DOWNSPREAD_30KHZ, false, 0};
1456
1457         /* Higher link settings based on feature supported */
1458         if (enc->features.flags.bits.IS_HBR2_CAPABLE)
1459                 max_link_cap.link_rate = LINK_RATE_HIGH2;
1460
1461         if (enc->features.flags.bits.IS_HBR3_CAPABLE)
1462                 max_link_cap.link_rate = LINK_RATE_HIGH3;
1463
1464         *link_settings = max_link_cap;
1465 }