drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dio_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
  27 #include "reg_helper.h"
  28
  29 #include "core_types.h"
  30 #include "link_encoder.h"
  31 #include "dcn31_dio_link_encoder.h"
  32 #include "stream_encoder.h"
  33 #include "i2caux_interface.h"
  34 #include "dc_bios_types.h"
  35
  36 #include "gpio_service_interface.h"
  37
  38 #include "link_enc_cfg.h"
  39 #include "dc_dmub_srv.h"
  40 #include "dal_asic_id.h"
  41
  42 #define CTX \
  43         enc10->base.ctx
  44 #define DC_LOGGER \
  45         enc10->base.ctx->logger
  46
  47 #define REG(reg)\
  48         (enc10->link_regs->reg)
  49
  50 #undef FN
  51 #define FN(reg_name, field_name) \
  52         enc10->link_shift->field_name, enc10->link_mask->field_name
  53
  54 #define IND_REG(index) \
  55         (enc10->link_regs->index)
  56
  57 #define AUX_REG(reg)\
  58         (enc10->aux_regs->reg)
  59
  60 #define AUX_REG_READ(reg_name) \
  61                 dm_read_reg(CTX, AUX_REG(reg_name))
  62
  63 #define AUX_REG_WRITE(reg_name, val) \
  64                         dm_write_reg(CTX, AUX_REG(reg_name), val)
  65
  66 #ifndef MIN
  67 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
  68 #endif
  69
  70 static uint8_t phy_id_from_transmitter(enum transmitter t)
  71 {
  72         uint8_t phy_id;
  73
  74         switch (t) {
  75         case TRANSMITTER_UNIPHY_A:
  76                 phy_id = 0;
  77                 break;
  78         case TRANSMITTER_UNIPHY_B:
  79                 phy_id = 1;
  80                 break;
  81         case TRANSMITTER_UNIPHY_C:
  82                 phy_id = 2;
  83                 break;
  84         case TRANSMITTER_UNIPHY_D:
  85                 phy_id = 3;
  86                 break;
  87         case TRANSMITTER_UNIPHY_E:
  88                 phy_id = 4;
  89                 break;
  90         case TRANSMITTER_UNIPHY_F:
  91                 phy_id = 5;
  92                 break;
  93         case TRANSMITTER_UNIPHY_G:
  94                 phy_id = 6;
  95                 break;
  96         default:
  97                 phy_id = 0;
  98                 break;
  99         }
 100         return phy_id;
 101 }
 102
 103 static bool has_query_dp_alt(struct link_encoder *enc)
 104 {
 105         struct dc_dmub_srv *dc_dmub_srv = enc->ctx->dmub_srv;
 106
 107         /* Supports development firmware and firmware >= 4.0.11 */
 108         return dc_dmub_srv &&
 109                !(dc_dmub_srv->dmub->fw_version >= DMUB_FW_VERSION(4, 0, 0) &&
 110                  dc_dmub_srv->dmub->fw_version <= DMUB_FW_VERSION(4, 0, 10));
 111 }
 112
 113 static bool query_dp_alt_from_dmub(struct link_encoder *enc,
 114                                    union dmub_rb_cmd *cmd)
 115 {
 116         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 117         struct dc_dmub_srv *dc_dmub_srv = enc->ctx->dmub_srv;
 118
 119         memset(cmd, 0, sizeof(*cmd));
 120         cmd->query_dp_alt.header.type = DMUB_CMD__VBIOS;
 121         cmd->query_dp_alt.header.sub_type =
 122                 DMUB_CMD__VBIOS_TRANSMITTER_QUERY_DP_ALT;
 123         cmd->query_dp_alt.header.payload_bytes = sizeof(cmd->query_dp_alt.data);
 124         cmd->query_dp_alt.data.phy_id = phy_id_from_transmitter(enc10->base.transmitter);
 125
 126         if (!dc_dmub_srv_cmd_with_reply_data(dc_dmub_srv, cmd))
 127                 return false;
 128
 129         return true;
 130 }
 131
 132 void dcn31_link_encoder_set_dio_phy_mux(
 133         struct link_encoder *enc,
 134         enum encoder_type_select sel,
 135         uint32_t hpo_inst)
 136 {
 137         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 138
 139         switch (enc->transmitter) {
 140         case TRANSMITTER_UNIPHY_A:
 141                 if (sel == ENCODER_TYPE_HDMI_FRL)
 142                         REG_UPDATE(DIO_LINKA_CNTL,
 143                                         HPO_HDMI_ENC_SEL, hpo_inst);
 144                 else if (sel == ENCODER_TYPE_DP_128B132B)
 145                         REG_UPDATE(DIO_LINKA_CNTL,
 146                                         HPO_DP_ENC_SEL, hpo_inst);
 147                 REG_UPDATE(DIO_LINKA_CNTL,
 148                                 ENC_TYPE_SEL, sel);
 149                 break;
 150         case TRANSMITTER_UNIPHY_B:
 151                 if (sel == ENCODER_TYPE_HDMI_FRL)
 152                         REG_UPDATE(DIO_LINKB_CNTL,
 153                                         HPO_HDMI_ENC_SEL, hpo_inst);
 154                 else if (sel == ENCODER_TYPE_DP_128B132B)
 155                         REG_UPDATE(DIO_LINKB_CNTL,
 156                                         HPO_DP_ENC_SEL, hpo_inst);
 157                 REG_UPDATE(DIO_LINKB_CNTL,
 158                                 ENC_TYPE_SEL, sel);
 159                 break;
 160         case TRANSMITTER_UNIPHY_C:
 161                 if (sel == ENCODER_TYPE_HDMI_FRL)
 162                         REG_UPDATE(DIO_LINKC_CNTL,
 163                                         HPO_HDMI_ENC_SEL, hpo_inst);
 164                 else if (sel == ENCODER_TYPE_DP_128B132B)
 165                         REG_UPDATE(DIO_LINKC_CNTL,
 166                                         HPO_DP_ENC_SEL, hpo_inst);
 167                 REG_UPDATE(DIO_LINKC_CNTL,
 168                                 ENC_TYPE_SEL, sel);
 169                 break;
 170         case TRANSMITTER_UNIPHY_D:
 171                 if (sel == ENCODER_TYPE_HDMI_FRL)
 172                         REG_UPDATE(DIO_LINKD_CNTL,
 173                                         HPO_HDMI_ENC_SEL, hpo_inst);
 174                 else if (sel == ENCODER_TYPE_DP_128B132B)
 175                         REG_UPDATE(DIO_LINKD_CNTL,
 176                                         HPO_DP_ENC_SEL, hpo_inst);
 177                 REG_UPDATE(DIO_LINKD_CNTL,
 178                                 ENC_TYPE_SEL, sel);
 179                 break;
 180         case TRANSMITTER_UNIPHY_E:
 181                 if (sel == ENCODER_TYPE_HDMI_FRL)
 182                         REG_UPDATE(DIO_LINKE_CNTL,
 183                                         HPO_HDMI_ENC_SEL, hpo_inst);
 184                 else if (sel == ENCODER_TYPE_DP_128B132B)
 185                         REG_UPDATE(DIO_LINKE_CNTL,
 186                                         HPO_DP_ENC_SEL, hpo_inst);
 187                 REG_UPDATE(DIO_LINKE_CNTL,
 188                                 ENC_TYPE_SEL, sel);
 189                 break;
 190         case TRANSMITTER_UNIPHY_F:
 191                 if (sel == ENCODER_TYPE_HDMI_FRL)
 192                         REG_UPDATE(DIO_LINKF_CNTL,
 193                                         HPO_HDMI_ENC_SEL, hpo_inst);
 194                 else if (sel == ENCODER_TYPE_DP_128B132B)
 195                         REG_UPDATE(DIO_LINKF_CNTL,
 196                                         HPO_DP_ENC_SEL, hpo_inst);
 197                 REG_UPDATE(DIO_LINKF_CNTL,
 198                                 ENC_TYPE_SEL, sel);
 199                 break;
 200         default:
 201                 /* Do nothing */
 202                 break;
 203         }
 204 }
 205
 206 static void enc31_hw_init(struct link_encoder *enc)
 207 {
 208         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 209
 210 /*
 211         00 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__1to2 : 1/2
 212         01 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__3to4 : 3/4
 213         02 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__7to8 : 7/8
 214         03 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__15to16 : 15/16
 215         04 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__31to32 : 31/32
 216         05 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__63to64 : 63/64
 217         06 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__127to128 : 127/128
 218         07 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__255to256 : 255/256
 219 */
 220
 221 /*
 222         AUX_REG_UPDATE_5(AUX_DPHY_RX_CONTROL0,
 223         AUX_RX_START_WINDOW = 1 [6:4]
 224         AUX_RX_RECEIVE_WINDOW = 1 default is 2 [10:8]
 225         AUX_RX_HALF_SYM_DETECT_LEN  = 1 [13:12] default is 1
 226         AUX_RX_TRANSITION_FILTER_EN = 1 [16] default is 1
 227         AUX_RX_ALLOW_BELOW_THRESHOLD_PHASE_DETECT [17] is 0  default is 0
 228         AUX_RX_ALLOW_BELOW_THRESHOLD_START [18] is 1  default is 1
 229         AUX_RX_ALLOW_BELOW_THRESHOLD_STOP [19] is 1  default is 1
 230         AUX_RX_PHASE_DETECT_LEN,  [21,20] = 0x3 default is 3
 231         AUX_RX_DETECTION_THRESHOLD [30:28] = 1
 232 */
 233         // dmub will read AUX_DPHY_RX_CONTROL0/AUX_DPHY_TX_CONTROL from vbios table in dp_aux_init
 234
 235         //AUX_DPHY_TX_REF_CONTROL'AUX_TX_REF_DIV HW default is 0x32;
 236         // Set AUX_TX_REF_DIV Divider to generate 2 MHz reference from refclk
 237         // 27MHz -> 0xd
 238         // 100MHz -> 0x32
 239         // 48MHz -> 0x18
 240
 241         // Set TMDS_CTL0 to 1.  This is a legacy setting.
 242         REG_UPDATE(TMDS_CTL_BITS, TMDS_CTL0, 1);
 243
 244         dcn10_aux_initialize(enc10);
 245 }
 246
 247 static const struct link_encoder_funcs dcn31_link_enc_funcs = {
 248         .read_state = link_enc2_read_state,
 249         .validate_output_with_stream =
 250                         dcn30_link_encoder_validate_output_with_stream,
 251         .hw_init = enc31_hw_init,
 252         .setup = dcn10_link_encoder_setup,
 253         .enable_tmds_output = dcn10_link_encoder_enable_tmds_output,
 254         .enable_dp_output = dcn31_link_encoder_enable_dp_output,
 255         .enable_dp_mst_output = dcn31_link_encoder_enable_dp_mst_output,
 256         .disable_output = dcn31_link_encoder_disable_output,
 257         .dp_set_lane_settings = dcn10_link_encoder_dp_set_lane_settings,
 258         .dp_set_phy_pattern = dcn10_link_encoder_dp_set_phy_pattern,
 259         .update_mst_stream_allocation_table =
 260                 dcn10_link_encoder_update_mst_stream_allocation_table,
 261         .psr_program_dp_dphy_fast_training =
 262                         dcn10_psr_program_dp_dphy_fast_training,
 263         .psr_program_secondary_packet = dcn10_psr_program_secondary_packet,
 264         .connect_dig_be_to_fe = dcn10_link_encoder_connect_dig_be_to_fe,
 265         .enable_hpd = dcn10_link_encoder_enable_hpd,
 266         .disable_hpd = dcn10_link_encoder_disable_hpd,
 267         .is_dig_enabled = dcn10_is_dig_enabled,
 268         .destroy = dcn10_link_encoder_destroy,
 269         .fec_set_enable = enc2_fec_set_enable,
 270         .fec_set_ready = enc2_fec_set_ready,
 271         .fec_is_active = enc2_fec_is_active,
 272         .get_dig_frontend = dcn10_get_dig_frontend,
 273         .get_dig_mode = dcn10_get_dig_mode,
 274         .is_in_alt_mode = dcn31_link_encoder_is_in_alt_mode,
 275         .get_max_link_cap = dcn31_link_encoder_get_max_link_cap,
 276         .set_dio_phy_mux = dcn31_link_encoder_set_dio_phy_mux,
 277 };
 278
 279 void dcn31_link_encoder_construct(
 280         struct dcn20_link_encoder *enc20,
 281         const struct encoder_init_data *init_data,
 282         const struct encoder_feature_support *enc_features,
 283         const struct dcn10_link_enc_registers *link_regs,
 284         const struct dcn10_link_enc_aux_registers *aux_regs,
 285         const struct dcn10_link_enc_hpd_registers *hpd_regs,
 286         const struct dcn10_link_enc_shift *link_shift,
 287         const struct dcn10_link_enc_mask *link_mask)
 288 {
 289         struct bp_encoder_cap_info bp_cap_info = {0};
 290         const struct dc_vbios_funcs *bp_funcs = init_data->ctx->dc_bios->funcs;
 291         enum bp_result result = BP_RESULT_OK;
 292         struct dcn10_link_encoder *enc10 = &enc20->enc10;
 293
 294         enc10->base.funcs = &dcn31_link_enc_funcs;
 295         enc10->base.ctx = init_data->ctx;
 296         enc10->base.id = init_data->encoder;
 297
 298         enc10->base.hpd_source = init_data->hpd_source;
 299         enc10->base.connector = init_data->connector;
 300
 301         enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;
 302
 303         enc10->base.features = *enc_features;
 304
 305         enc10->base.transmitter = init_data->transmitter;
 306
 307         /* set the flag to indicate whether driver poll the I2C data pin
 308          * while doing the DP sink detect
 309          */
 310
 311 /*      if (dal_adapter_service_is_feature_supported(as,
 312                 FEATURE_DP_SINK_DETECT_POLL_DATA_PIN))
 313                 enc10->base.features.flags.bits.
 314                         DP_SINK_DETECT_POLL_DATA_PIN = true;*/
 315
 316         enc10->base.output_signals =
 317                 SIGNAL_TYPE_DVI_SINGLE_LINK |
 318                 SIGNAL_TYPE_DVI_DUAL_LINK |
 319                 SIGNAL_TYPE_LVDS |
 320                 SIGNAL_TYPE_DISPLAY_PORT |
 321                 SIGNAL_TYPE_DISPLAY_PORT_MST |
 322                 SIGNAL_TYPE_EDP |
 323                 SIGNAL_TYPE_HDMI_TYPE_A;
 324
 325         /* For DCE 8.0 and 8.1, by design, UNIPHY is hardwired to DIG_BE.
 326          * SW always assign DIG_FE 1:1 mapped to DIG_FE for non-MST UNIPHY.
 327          * SW assign DIG_FE to non-MST UNIPHY first and MST last. So prefer
 328          * DIG is per UNIPHY and used by SST DP, eDP, HDMI, DVI and LVDS.
 329          * Prefer DIG assignment is decided by board design.
 330          * For DCE 8.0, there are only max 6 UNIPHYs, we assume board design
 331          * and VBIOS will filter out 7 UNIPHY for DCE 8.0.
 332          * By this, adding DIGG should not hurt DCE 8.0.
 333          * This will let DCE 8.1 share DCE 8.0 as much as possible
 334          */
 335
 336         enc10->link_regs = link_regs;
 337         enc10->aux_regs = aux_regs;
 338         enc10->hpd_regs = hpd_regs;
 339         enc10->link_shift = link_shift;
 340         enc10->link_mask = link_mask;
 341
 342         switch (enc10->base.transmitter) {
 343         case TRANSMITTER_UNIPHY_A:
 344                 enc10->base.preferred_engine = ENGINE_ID_DIGA;
 345         break;
 346         case TRANSMITTER_UNIPHY_B:
 347                 enc10->base.preferred_engine = ENGINE_ID_DIGB;
 348         break;
 349         case TRANSMITTER_UNIPHY_C:
 350                 enc10->base.preferred_engine = ENGINE_ID_DIGC;
 351         break;
 352         case TRANSMITTER_UNIPHY_D:
 353                 enc10->base.preferred_engine = ENGINE_ID_DIGD;
 354         break;
 355         case TRANSMITTER_UNIPHY_E:
 356                 enc10->base.preferred_engine = ENGINE_ID_DIGE;
 357         break;
 358         case TRANSMITTER_UNIPHY_F:
 359                 enc10->base.preferred_engine = ENGINE_ID_DIGF;
 360         break;
 361         default:
 362                 ASSERT_CRITICAL(false);
 363                 enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;
 364         }
 365
 366         /* default to one to mirror Windows behavior */
 367         enc10->base.features.flags.bits.HDMI_6GB_EN = 1;
 368
 369         result = bp_funcs->get_encoder_cap_info(enc10->base.ctx->dc_bios,
 370                                                 enc10->base.id, &bp_cap_info);
 371
 372         /* Override features with DCE-specific values */
 373         if (result == BP_RESULT_OK) {
 374                 enc10->base.features.flags.bits.IS_HBR2_CAPABLE =
 375                                 bp_cap_info.DP_HBR2_EN;
 376                 enc10->base.features.flags.bits.IS_HBR3_CAPABLE =
 377                                 bp_cap_info.DP_HBR3_EN;
 378                 enc10->base.features.flags.bits.HDMI_6GB_EN = bp_cap_info.HDMI_6GB_EN;
 379                 enc10->base.features.flags.bits.IS_DP2_CAPABLE = bp_cap_info.IS_DP2_CAPABLE;
 380                 enc10->base.features.flags.bits.IS_UHBR10_CAPABLE = bp_cap_info.DP_UHBR10_EN;
 381                 enc10->base.features.flags.bits.IS_UHBR13_5_CAPABLE = bp_cap_info.DP_UHBR13_5_EN;
 382                 enc10->base.features.flags.bits.IS_UHBR20_CAPABLE = bp_cap_info.DP_UHBR20_EN;
 383                 enc10->base.features.flags.bits.DP_IS_USB_C =
 384                                 bp_cap_info.DP_IS_USB_C;
 385         } else {
 386                 DC_LOG_WARNING("%s: Failed to get encoder_cap_info from VBIOS with error code %d!\n",
 387                                 __func__,
 388                                 result);
 389         }
 390         if (enc10->base.ctx->dc->debug.hdmi20_disable) {
 391                 enc10->base.features.flags.bits.HDMI_6GB_EN = 0;
 392         }
 393 }
 394
 395 void dcn31_link_encoder_construct_minimal(
 396         struct dcn20_link_encoder *enc20,
 397         struct dc_context *ctx,
 398         const struct encoder_feature_support *enc_features,
 399         const struct dcn10_link_enc_registers *link_regs,
 400         enum engine_id eng_id)
 401 {
 402         struct dcn10_link_encoder *enc10 = &enc20->enc10;
 403
 404         enc10->base.funcs = &dcn31_link_enc_funcs;
 405         enc10->base.ctx = ctx;
 406         enc10->base.id.type = OBJECT_TYPE_ENCODER;
 407         enc10->base.hpd_source = HPD_SOURCEID_UNKNOWN;
 408         enc10->base.connector.type = OBJECT_TYPE_CONNECTOR;
 409         enc10->base.preferred_engine = eng_id;
 410         enc10->base.features = *enc_features;
 411         enc10->base.transmitter = TRANSMITTER_UNKNOWN;
 412         enc10->link_regs = link_regs;
 413
 414         enc10->base.output_signals =
 415                 SIGNAL_TYPE_DISPLAY_PORT |
 416                 SIGNAL_TYPE_DISPLAY_PORT_MST |
 417                 SIGNAL_TYPE_EDP;
 418 }
 419
 420 /* DPIA equivalent of link_transmitter_control. */
 421 static bool link_dpia_control(struct dc_context *dc_ctx,
 422         struct dmub_cmd_dig_dpia_control_data *dpia_control)
 423 {
 424         union dmub_rb_cmd cmd;
 425         struct dc_dmub_srv *dmub = dc_ctx->dmub_srv;
 426
 427         memset(&cmd, 0, sizeof(cmd));
 428
 429         cmd.dig1_dpia_control.header.type = DMUB_CMD__DPIA;
 430         cmd.dig1_dpia_control.header.sub_type =
 431                         DMUB_CMD__DPIA_DIG1_DPIA_CONTROL;
 432         cmd.dig1_dpia_control.header.payload_bytes =
 433                 sizeof(cmd.dig1_dpia_control) -
 434                 sizeof(cmd.dig1_dpia_control.header);
 435
 436         cmd.dig1_dpia_control.dpia_control = *dpia_control;
 437
 438         dc_dmub_srv_cmd_queue(dmub, &cmd);
 439         dc_dmub_srv_cmd_execute(dmub);
 440         dc_dmub_srv_wait_idle(dmub);
 441
 442         return true;
 443 }
 444
 445 static void link_encoder_disable(struct dcn10_link_encoder *enc10)
 446 {
 447         /* reset training complete */
 448         REG_UPDATE(DP_LINK_CNTL, DP_LINK_TRAINING_COMPLETE, 0);
 449 }
 450
 451 void dcn31_link_encoder_enable_dp_output(
 452         struct link_encoder *enc,
 453         const struct dc_link_settings *link_settings,
 454         enum clock_source_id clock_source)
 455 {
 456         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 457
 458         /* Enable transmitter and encoder. */
 459         if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) {
 460
 461                 dcn20_link_encoder_enable_dp_output(enc, link_settings, clock_source);
 462
 463         } else {
 464
 465                 struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 };
 466                 struct dc_link *link;
 467
 468                 link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine);
 469
 470                 enc1_configure_encoder(enc10, link_settings);
 471
 472                 dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_ENABLE;
 473                 dpia_control.enc_id = enc->preferred_engine;
 474                 dpia_control.mode_laneset.digmode = 0; /* 0 for SST; 5 for MST */
 475                 dpia_control.lanenum = (uint8_t)link_settings->lane_count;
 476                 dpia_control.symclk_10khz = link_settings->link_rate *
 477                                 LINK_RATE_REF_FREQ_IN_KHZ / 10;
 478                 /* DIG_BE_CNTL.DIG_HPD_SELECT set to 5 (hpdsel - 1) to indicate HPD pin
 479                  * unused by DPIA.
 480                  */
 481                 dpia_control.hpdsel = 6;
 482
 483                 if (link) {
 484                         dpia_control.dpia_id = link->ddc_hw_inst;
 485                         dpia_control.fec_rdy = dc_link_should_enable_fec(link);
 486                 } else {
 487                         DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__);
 488                         BREAK_TO_DEBUGGER();
 489                         return;
 490                 }
 491
 492                 link_dpia_control(enc->ctx, &dpia_control);
 493         }
 494 }
 495
 496 void dcn31_link_encoder_enable_dp_mst_output(
 497         struct link_encoder *enc,
 498         const struct dc_link_settings *link_settings,
 499         enum clock_source_id clock_source)
 500 {
 501         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 502
 503         /* Enable transmitter and encoder. */
 504         if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) {
 505
 506                 dcn10_link_encoder_enable_dp_mst_output(enc, link_settings, clock_source);
 507
 508         } else {
 509
 510                 struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 };
 511                 struct dc_link *link;
 512
 513                 link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine);
 514
 515                 enc1_configure_encoder(enc10, link_settings);
 516
 517                 dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_ENABLE;
 518                 dpia_control.enc_id = enc->preferred_engine;
 519                 dpia_control.mode_laneset.digmode = 5; /* 0 for SST; 5 for MST */
 520                 dpia_control.lanenum = (uint8_t)link_settings->lane_count;
 521                 dpia_control.symclk_10khz = link_settings->link_rate *
 522                                 LINK_RATE_REF_FREQ_IN_KHZ / 10;
 523                 /* DIG_BE_CNTL.DIG_HPD_SELECT set to 5 (hpdsel - 1) to indicate HPD pin
 524                  * unused by DPIA.
 525                  */
 526                 dpia_control.hpdsel = 6;
 527
 528                 if (link) {
 529                         dpia_control.dpia_id = link->ddc_hw_inst;
 530                         dpia_control.fec_rdy = dc_link_should_enable_fec(link);
 531                 } else {
 532                         DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__);
 533                         BREAK_TO_DEBUGGER();
 534                         return;
 535                 }
 536
 537                 link_dpia_control(enc->ctx, &dpia_control);
 538         }
 539 }
 540
 541 void dcn31_link_encoder_disable_output(
 542         struct link_encoder *enc,
 543         enum signal_type signal)
 544 {
 545         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 546
 547         /* Disable transmitter and encoder. */
 548         if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) {
 549
 550                 dcn10_link_encoder_disable_output(enc, signal);
 551
 552         } else {
 553
 554                 struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 };
 555                 struct dc_link *link;
 556
 557                 if (!dcn10_is_dig_enabled(enc))
 558                         return;
 559
 560                 link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine);
 561
 562                 dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_DISABLE;
 563                 dpia_control.enc_id = enc->preferred_engine;
 564                 if (signal == SIGNAL_TYPE_DISPLAY_PORT) {
 565                         dpia_control.mode_laneset.digmode = 0; /* 0 for SST; 5 for MST */
 566                 } else if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
 567                         dpia_control.mode_laneset.digmode = 5; /* 0 for SST; 5 for MST */
 568                 } else {
 569                         DC_LOG_ERROR("%s: USB4 DPIA only supports DisplayPort.\n", __func__);
 570                         BREAK_TO_DEBUGGER();
 571                 }
 572
 573                 if (link) {
 574                         dpia_control.dpia_id = link->ddc_hw_inst;
 575                 } else {
 576                         DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__);
 577                         BREAK_TO_DEBUGGER();
 578                         return;
 579                 }
 580
 581                 link_dpia_control(enc->ctx, &dpia_control);
 582
 583                 link_encoder_disable(enc10);
 584         }
 585 }
 586
 587 bool dcn31_link_encoder_is_in_alt_mode(struct link_encoder *enc)
 588 {
 589         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 590         union dmub_rb_cmd cmd;
 591         uint32_t dp_alt_mode_disable;
 592
 593         /* Only applicable to USB-C PHY. */
 594         if (!enc->features.flags.bits.DP_IS_USB_C)
 595                 return false;
 596
 597         /*
 598          * Use the new interface from DMCUB if available.
 599          * Avoids hanging the RDCPSPIPE if DMCUB wasn't already running.
 600          */
 601         if (has_query_dp_alt(enc)) {
 602                 if (!query_dp_alt_from_dmub(enc, &cmd))
 603                         return false;
 604
 605                 return (cmd.query_dp_alt.data.is_dp_alt_disable == 0);
 606         }
 607
 608         /* Legacy path, avoid if possible. */
 609         if (enc->ctx->asic_id.hw_internal_rev != YELLOW_CARP_B0) {
 610                 REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE,
 611                         &dp_alt_mode_disable);
 612         } else {
 613                 /*
 614                  * B0 phys use a new set of registers to check whether alt mode is disabled.
 615                  * if value == 1 alt mode is disabled, otherwise it is enabled.
 616                  */
 617                 if ((enc10->base.transmitter == TRANSMITTER_UNIPHY_A) ||
 618                     (enc10->base.transmitter == TRANSMITTER_UNIPHY_B) ||
 619                     (enc10->base.transmitter == TRANSMITTER_UNIPHY_E)) {
 620                         REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE,
 621                                 &dp_alt_mode_disable);
 622                 } else {
 623                         REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE,
 624                                 &dp_alt_mode_disable);
 625                 }
 626         }
 627
 628         return (dp_alt_mode_disable == 0);
 629 }
 630
 631 void dcn31_link_encoder_get_max_link_cap(struct link_encoder *enc, struct dc_link_settings *link_settings)
 632 {
 633         struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
 634         union dmub_rb_cmd cmd;
 635         uint32_t is_in_usb_c_dp4_mode = 0;
 636
 637         dcn10_link_encoder_get_max_link_cap(enc, link_settings);
 638
 639         /* Take the link cap directly if not USB */
 640         if (!enc->features.flags.bits.DP_IS_USB_C)
 641                 return;
 642
 643         /*
 644          * Use the new interface from DMCUB if available.
 645          * Avoids hanging the RDCPSPIPE if DMCUB wasn't already running.
 646          */
 647         if (has_query_dp_alt(enc)) {
 648                 if (!query_dp_alt_from_dmub(enc, &cmd))
 649                         return;
 650
 651                 if (cmd.query_dp_alt.data.is_usb &&
 652                     cmd.query_dp_alt.data.is_dp4 == 0)
 653                         link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count);
 654
 655                 return;
 656         }
 657
 658         /* Legacy path, avoid if possible. */
 659         if (enc->ctx->asic_id.hw_internal_rev != YELLOW_CARP_B0) {
 660                 REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DP4,
 661                         &is_in_usb_c_dp4_mode);
 662         } else {
 663                 if ((enc10->base.transmitter == TRANSMITTER_UNIPHY_A) ||
 664                     (enc10->base.transmitter == TRANSMITTER_UNIPHY_B) ||
 665                     (enc10->base.transmitter == TRANSMITTER_UNIPHY_E)) {
 666                         REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DP4,
 667                                 &is_in_usb_c_dp4_mode);
 668                 } else {
 669                         REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DP4,
 670                                 &is_in_usb_c_dp4_mode);
 671                 }
 672         }
 673
 674         if (!is_in_usb_c_dp4_mode)
 675                 link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count);
 676 }