/* * Copyright 2012-15 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: AMD * */ #include "reg_helper.h" #include "core_types.h" #include "link_encoder.h" #include "dcn31_dio_link_encoder.h" #include "stream_encoder.h" #include "dc_bios_types.h" #include "gpio_service_interface.h" #include "link_enc_cfg.h" #include "dc_dmub_srv.h" #include "dal_asic_id.h" #include "link.h" #define CTX \ enc10->base.ctx #define DC_LOGGER \ enc10->base.ctx->logger #define REG(reg)\ (enc10->link_regs->reg) #undef FN #define FN(reg_name, field_name) \ enc10->link_shift->field_name, enc10->link_mask->field_name #define IND_REG(index) \ (enc10->link_regs->index) #define AUX_REG(reg)\ (enc10->aux_regs->reg) #define AUX_REG_READ(reg_name) \ dm_read_reg(CTX, AUX_REG(reg_name)) #define AUX_REG_WRITE(reg_name, val) \ dm_write_reg(CTX, AUX_REG(reg_name), val) #ifndef MIN #define MIN(X, Y) ((X) < (Y) ? (X) : (Y)) #endif static uint8_t phy_id_from_transmitter(enum transmitter t) { uint8_t phy_id; switch (t) { case TRANSMITTER_UNIPHY_A: phy_id = 0; break; case TRANSMITTER_UNIPHY_B: phy_id = 1; break; case TRANSMITTER_UNIPHY_C: phy_id = 2; break; case TRANSMITTER_UNIPHY_D: phy_id = 3; break; case TRANSMITTER_UNIPHY_E: phy_id = 4; break; case TRANSMITTER_UNIPHY_F: phy_id = 5; break; case TRANSMITTER_UNIPHY_G: phy_id = 6; break; default: phy_id = 0; break; } return phy_id; } static bool has_query_dp_alt(struct link_encoder *enc) { struct dc_dmub_srv *dc_dmub_srv = enc->ctx->dmub_srv; if (enc->ctx->dce_version >= DCN_VERSION_3_15) return true; /* Supports development firmware and firmware >= 4.0.11 */ return dc_dmub_srv && !(dc_dmub_srv->dmub->fw_version >= DMUB_FW_VERSION(4, 0, 0) && dc_dmub_srv->dmub->fw_version <= DMUB_FW_VERSION(4, 0, 10)); } static bool query_dp_alt_from_dmub(struct link_encoder *enc, union dmub_rb_cmd *cmd) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); memset(cmd, 0, sizeof(*cmd)); cmd->query_dp_alt.header.type = DMUB_CMD__VBIOS; cmd->query_dp_alt.header.sub_type = DMUB_CMD__VBIOS_TRANSMITTER_QUERY_DP_ALT; cmd->query_dp_alt.header.payload_bytes = sizeof(cmd->query_dp_alt.data); cmd->query_dp_alt.data.phy_id = phy_id_from_transmitter(enc10->base.transmitter); if (!dm_execute_dmub_cmd(enc->ctx, cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY)) return false; return true; } void dcn31_link_encoder_set_dio_phy_mux( struct link_encoder *enc, enum encoder_type_select sel, uint32_t hpo_inst) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); switch (enc->transmitter) { case TRANSMITTER_UNIPHY_A: if (sel == ENCODER_TYPE_HDMI_FRL) REG_UPDATE(DIO_LINKA_CNTL, HPO_HDMI_ENC_SEL, hpo_inst); else if (sel == ENCODER_TYPE_DP_128B132B) REG_UPDATE(DIO_LINKA_CNTL, HPO_DP_ENC_SEL, hpo_inst); REG_UPDATE(DIO_LINKA_CNTL, ENC_TYPE_SEL, sel); break; case TRANSMITTER_UNIPHY_B: if (sel == ENCODER_TYPE_HDMI_FRL) REG_UPDATE(DIO_LINKB_CNTL, HPO_HDMI_ENC_SEL, hpo_inst); else if (sel == ENCODER_TYPE_DP_128B132B) REG_UPDATE(DIO_LINKB_CNTL, HPO_DP_ENC_SEL, hpo_inst); REG_UPDATE(DIO_LINKB_CNTL, ENC_TYPE_SEL, sel); break; case TRANSMITTER_UNIPHY_C: if (sel == ENCODER_TYPE_HDMI_FRL) REG_UPDATE(DIO_LINKC_CNTL, HPO_HDMI_ENC_SEL, hpo_inst); else if (sel == ENCODER_TYPE_DP_128B132B) REG_UPDATE(DIO_LINKC_CNTL, HPO_DP_ENC_SEL, hpo_inst); REG_UPDATE(DIO_LINKC_CNTL, ENC_TYPE_SEL, sel); break; case TRANSMITTER_UNIPHY_D: if (sel == ENCODER_TYPE_HDMI_FRL) REG_UPDATE(DIO_LINKD_CNTL, HPO_HDMI_ENC_SEL, hpo_inst); else if (sel == ENCODER_TYPE_DP_128B132B) REG_UPDATE(DIO_LINKD_CNTL, HPO_DP_ENC_SEL, hpo_inst); REG_UPDATE(DIO_LINKD_CNTL, ENC_TYPE_SEL, sel); break; case TRANSMITTER_UNIPHY_E: if (sel == ENCODER_TYPE_HDMI_FRL) REG_UPDATE(DIO_LINKE_CNTL, HPO_HDMI_ENC_SEL, hpo_inst); else if (sel == ENCODER_TYPE_DP_128B132B) REG_UPDATE(DIO_LINKE_CNTL, HPO_DP_ENC_SEL, hpo_inst); REG_UPDATE(DIO_LINKE_CNTL, ENC_TYPE_SEL, sel); break; case TRANSMITTER_UNIPHY_F: if (sel == ENCODER_TYPE_HDMI_FRL) REG_UPDATE(DIO_LINKF_CNTL, HPO_HDMI_ENC_SEL, hpo_inst); else if (sel == ENCODER_TYPE_DP_128B132B) REG_UPDATE(DIO_LINKF_CNTL, HPO_DP_ENC_SEL, hpo_inst); REG_UPDATE(DIO_LINKF_CNTL, ENC_TYPE_SEL, sel); break; default: /* Do nothing */ break; } } static void enc31_hw_init(struct link_encoder *enc) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); /* 00 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__1to2 : 1/2 01 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__3to4 : 3/4 02 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__7to8 : 7/8 03 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__15to16 : 15/16 04 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__31to32 : 31/32 05 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__63to64 : 63/64 06 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__127to128 : 127/128 07 - DP_AUX_DPHY_RX_DETECTION_THRESHOLD__255to256 : 255/256 */ /* AUX_REG_UPDATE_5(AUX_DPHY_RX_CONTROL0, AUX_RX_START_WINDOW = 1 [6:4] AUX_RX_RECEIVE_WINDOW = 1 default is 2 [10:8] AUX_RX_HALF_SYM_DETECT_LEN = 1 [13:12] default is 1 AUX_RX_TRANSITION_FILTER_EN = 1 [16] default is 1 AUX_RX_ALLOW_BELOW_THRESHOLD_PHASE_DETECT [17] is 0 default is 0 AUX_RX_ALLOW_BELOW_THRESHOLD_START [18] is 1 default is 1 AUX_RX_ALLOW_BELOW_THRESHOLD_STOP [19] is 1 default is 1 AUX_RX_PHASE_DETECT_LEN, [21,20] = 0x3 default is 3 AUX_RX_DETECTION_THRESHOLD [30:28] = 1 */ // dmub will read AUX_DPHY_RX_CONTROL0/AUX_DPHY_TX_CONTROL from vbios table in dp_aux_init //AUX_DPHY_TX_REF_CONTROL'AUX_TX_REF_DIV HW default is 0x32; // Set AUX_TX_REF_DIV Divider to generate 2 MHz reference from refclk // 27MHz -> 0xd // 100MHz -> 0x32 // 48MHz -> 0x18 // Set TMDS_CTL0 to 1. This is a legacy setting. REG_UPDATE(TMDS_CTL_BITS, TMDS_CTL0, 1); dcn10_aux_initialize(enc10); } static const struct link_encoder_funcs dcn31_link_enc_funcs = { .read_state = link_enc2_read_state, .validate_output_with_stream = dcn30_link_encoder_validate_output_with_stream, .hw_init = enc31_hw_init, .setup = dcn10_link_encoder_setup, .enable_tmds_output = dcn10_link_encoder_enable_tmds_output, .enable_dp_output = dcn31_link_encoder_enable_dp_output, .enable_dp_mst_output = dcn31_link_encoder_enable_dp_mst_output, .disable_output = dcn31_link_encoder_disable_output, .dp_set_lane_settings = dcn10_link_encoder_dp_set_lane_settings, .dp_set_phy_pattern = dcn10_link_encoder_dp_set_phy_pattern, .update_mst_stream_allocation_table = dcn10_link_encoder_update_mst_stream_allocation_table, .psr_program_dp_dphy_fast_training = dcn10_psr_program_dp_dphy_fast_training, .psr_program_secondary_packet = dcn10_psr_program_secondary_packet, .connect_dig_be_to_fe = dcn10_link_encoder_connect_dig_be_to_fe, .enable_hpd = dcn10_link_encoder_enable_hpd, .disable_hpd = dcn10_link_encoder_disable_hpd, .is_dig_enabled = dcn10_is_dig_enabled, .destroy = dcn10_link_encoder_destroy, .fec_set_enable = enc2_fec_set_enable, .fec_set_ready = enc2_fec_set_ready, .fec_is_active = enc2_fec_is_active, .get_dig_frontend = dcn10_get_dig_frontend, .get_dig_mode = dcn10_get_dig_mode, .is_in_alt_mode = dcn31_link_encoder_is_in_alt_mode, .get_max_link_cap = dcn31_link_encoder_get_max_link_cap, .set_dio_phy_mux = dcn31_link_encoder_set_dio_phy_mux, }; void dcn31_link_encoder_construct( struct dcn20_link_encoder *enc20, const struct encoder_init_data *init_data, const struct encoder_feature_support *enc_features, const struct dcn10_link_enc_registers *link_regs, const struct dcn10_link_enc_aux_registers *aux_regs, const struct dcn10_link_enc_hpd_registers *hpd_regs, const struct dcn10_link_enc_shift *link_shift, const struct dcn10_link_enc_mask *link_mask) { struct bp_encoder_cap_info bp_cap_info = {0}; const struct dc_vbios_funcs *bp_funcs = init_data->ctx->dc_bios->funcs; enum bp_result result = BP_RESULT_OK; struct dcn10_link_encoder *enc10 = &enc20->enc10; enc10->base.funcs = &dcn31_link_enc_funcs; enc10->base.ctx = init_data->ctx; enc10->base.id = init_data->encoder; enc10->base.hpd_source = init_data->hpd_source; enc10->base.connector = init_data->connector; enc10->base.preferred_engine = ENGINE_ID_UNKNOWN; enc10->base.features = *enc_features; enc10->base.transmitter = init_data->transmitter; /* set the flag to indicate whether driver poll the I2C data pin * while doing the DP sink detect */ /* if (dal_adapter_service_is_feature_supported(as, FEATURE_DP_SINK_DETECT_POLL_DATA_PIN)) enc10->base.features.flags.bits. DP_SINK_DETECT_POLL_DATA_PIN = true;*/ enc10->base.output_signals = SIGNAL_TYPE_DVI_SINGLE_LINK | SIGNAL_TYPE_DVI_DUAL_LINK | SIGNAL_TYPE_LVDS | SIGNAL_TYPE_DISPLAY_PORT | SIGNAL_TYPE_DISPLAY_PORT_MST | SIGNAL_TYPE_EDP | SIGNAL_TYPE_HDMI_TYPE_A; /* For DCE 8.0 and 8.1, by design, UNIPHY is hardwired to DIG_BE. * SW always assign DIG_FE 1:1 mapped to DIG_FE for non-MST UNIPHY. * SW assign DIG_FE to non-MST UNIPHY first and MST last. So prefer * DIG is per UNIPHY and used by SST DP, eDP, HDMI, DVI and LVDS. * Prefer DIG assignment is decided by board design. * For DCE 8.0, there are only max 6 UNIPHYs, we assume board design * and VBIOS will filter out 7 UNIPHY for DCE 8.0. * By this, adding DIGG should not hurt DCE 8.0. * This will let DCE 8.1 share DCE 8.0 as much as possible */ enc10->link_regs = link_regs; enc10->aux_regs = aux_regs; enc10->hpd_regs = hpd_regs; enc10->link_shift = link_shift; enc10->link_mask = link_mask; switch (enc10->base.transmitter) { case TRANSMITTER_UNIPHY_A: enc10->base.preferred_engine = ENGINE_ID_DIGA; break; case TRANSMITTER_UNIPHY_B: enc10->base.preferred_engine = ENGINE_ID_DIGB; break; case TRANSMITTER_UNIPHY_C: enc10->base.preferred_engine = ENGINE_ID_DIGC; break; case TRANSMITTER_UNIPHY_D: enc10->base.preferred_engine = ENGINE_ID_DIGD; break; case TRANSMITTER_UNIPHY_E: enc10->base.preferred_engine = ENGINE_ID_DIGE; break; case TRANSMITTER_UNIPHY_F: enc10->base.preferred_engine = ENGINE_ID_DIGF; break; default: ASSERT_CRITICAL(false); enc10->base.preferred_engine = ENGINE_ID_UNKNOWN; } /* default to one to mirror Windows behavior */ enc10->base.features.flags.bits.HDMI_6GB_EN = 1; result = bp_funcs->get_encoder_cap_info(enc10->base.ctx->dc_bios, enc10->base.id, &bp_cap_info); /* Override features with DCE-specific values */ if (result == BP_RESULT_OK) { enc10->base.features.flags.bits.IS_HBR2_CAPABLE = bp_cap_info.DP_HBR2_EN; enc10->base.features.flags.bits.IS_HBR3_CAPABLE = bp_cap_info.DP_HBR3_EN; enc10->base.features.flags.bits.HDMI_6GB_EN = bp_cap_info.HDMI_6GB_EN; enc10->base.features.flags.bits.IS_DP2_CAPABLE = bp_cap_info.IS_DP2_CAPABLE; enc10->base.features.flags.bits.IS_UHBR10_CAPABLE = bp_cap_info.DP_UHBR10_EN; enc10->base.features.flags.bits.IS_UHBR13_5_CAPABLE = bp_cap_info.DP_UHBR13_5_EN; enc10->base.features.flags.bits.IS_UHBR20_CAPABLE = bp_cap_info.DP_UHBR20_EN; enc10->base.features.flags.bits.DP_IS_USB_C = bp_cap_info.DP_IS_USB_C; } else { DC_LOG_WARNING("%s: Failed to get encoder_cap_info from VBIOS with error code %d!\n", __func__, result); } if (enc10->base.ctx->dc->debug.hdmi20_disable) { enc10->base.features.flags.bits.HDMI_6GB_EN = 0; } } void dcn31_link_encoder_construct_minimal( struct dcn20_link_encoder *enc20, struct dc_context *ctx, const struct encoder_feature_support *enc_features, const struct dcn10_link_enc_registers *link_regs, enum engine_id eng_id) { struct dcn10_link_encoder *enc10 = &enc20->enc10; enc10->base.funcs = &dcn31_link_enc_funcs; enc10->base.ctx = ctx; enc10->base.id.type = OBJECT_TYPE_ENCODER; enc10->base.hpd_source = HPD_SOURCEID_UNKNOWN; enc10->base.connector.type = OBJECT_TYPE_CONNECTOR; enc10->base.preferred_engine = eng_id; enc10->base.features = *enc_features; enc10->base.transmitter = TRANSMITTER_UNKNOWN; enc10->link_regs = link_regs; enc10->base.output_signals = SIGNAL_TYPE_DISPLAY_PORT | SIGNAL_TYPE_DISPLAY_PORT_MST | SIGNAL_TYPE_EDP; } /* DPIA equivalent of link_transmitter_control. */ static bool link_dpia_control(struct dc_context *dc_ctx, struct dmub_cmd_dig_dpia_control_data *dpia_control) { union dmub_rb_cmd cmd; memset(&cmd, 0, sizeof(cmd)); cmd.dig1_dpia_control.header.type = DMUB_CMD__DPIA; cmd.dig1_dpia_control.header.sub_type = DMUB_CMD__DPIA_DIG1_DPIA_CONTROL; cmd.dig1_dpia_control.header.payload_bytes = sizeof(cmd.dig1_dpia_control) - sizeof(cmd.dig1_dpia_control.header); cmd.dig1_dpia_control.dpia_control = *dpia_control; dm_execute_dmub_cmd(dc_ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT); return true; } static void link_encoder_disable(struct dcn10_link_encoder *enc10) { /* reset training complete */ REG_UPDATE(DP_LINK_CNTL, DP_LINK_TRAINING_COMPLETE, 0); } void dcn31_link_encoder_enable_dp_output( struct link_encoder *enc, const struct dc_link_settings *link_settings, enum clock_source_id clock_source) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); /* Enable transmitter and encoder. */ if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) { DC_LOG_DEBUG("%s: enc_id(%d)\n", __func__, enc->preferred_engine); dcn20_link_encoder_enable_dp_output(enc, link_settings, clock_source); } else { struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 }; struct dc_link *link; link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine); enc1_configure_encoder(enc10, link_settings); dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_ENABLE; dpia_control.enc_id = enc->preferred_engine; dpia_control.mode_laneset.digmode = 0; /* 0 for SST; 5 for MST */ dpia_control.lanenum = (uint8_t)link_settings->lane_count; dpia_control.symclk_10khz = link_settings->link_rate * LINK_RATE_REF_FREQ_IN_KHZ / 10; /* DIG_BE_CNTL.DIG_HPD_SELECT set to 5 (hpdsel - 1) to indicate HPD pin * unused by DPIA. */ dpia_control.hpdsel = 6; if (link) { dpia_control.dpia_id = link->ddc_hw_inst; dpia_control.fec_rdy = link->dc->link_srv->dp_should_enable_fec(link); } else { DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__); BREAK_TO_DEBUGGER(); return; } DC_LOG_DEBUG("%s: DPIA(%d) - enc_id(%d)\n", __func__, dpia_control.dpia_id, dpia_control.enc_id); link_dpia_control(enc->ctx, &dpia_control); } } void dcn31_link_encoder_enable_dp_mst_output( struct link_encoder *enc, const struct dc_link_settings *link_settings, enum clock_source_id clock_source) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); /* Enable transmitter and encoder. */ if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) { DC_LOG_DEBUG("%s: enc_id(%d)\n", __func__, enc->preferred_engine); dcn10_link_encoder_enable_dp_mst_output(enc, link_settings, clock_source); } else { struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 }; struct dc_link *link; link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine); enc1_configure_encoder(enc10, link_settings); dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_ENABLE; dpia_control.enc_id = enc->preferred_engine; dpia_control.mode_laneset.digmode = 5; /* 0 for SST; 5 for MST */ dpia_control.lanenum = (uint8_t)link_settings->lane_count; dpia_control.symclk_10khz = link_settings->link_rate * LINK_RATE_REF_FREQ_IN_KHZ / 10; /* DIG_BE_CNTL.DIG_HPD_SELECT set to 5 (hpdsel - 1) to indicate HPD pin * unused by DPIA. */ dpia_control.hpdsel = 6; if (link) { dpia_control.dpia_id = link->ddc_hw_inst; dpia_control.fec_rdy = link->dc->link_srv->dp_should_enable_fec(link); } else { DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__); BREAK_TO_DEBUGGER(); return; } DC_LOG_DEBUG("%s: DPIA(%d) - enc_id(%d)\n", __func__, dpia_control.dpia_id, dpia_control.enc_id); link_dpia_control(enc->ctx, &dpia_control); } } void dcn31_link_encoder_disable_output( struct link_encoder *enc, enum amd_signal_type signal) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); /* Disable transmitter and encoder. */ if (!link_enc_cfg_is_transmitter_mappable(enc->ctx->dc, enc)) { DC_LOG_DEBUG("%s: enc_id(%d)\n", __func__, enc->preferred_engine); dcn10_link_encoder_disable_output(enc, signal); } else { struct dmub_cmd_dig_dpia_control_data dpia_control = { 0 }; struct dc_link *link; if (enc->funcs->is_dig_enabled && !enc->funcs->is_dig_enabled(enc)) return; link = link_enc_cfg_get_link_using_link_enc(enc->ctx->dc, enc->preferred_engine); dpia_control.action = (uint8_t)TRANSMITTER_CONTROL_DISABLE; dpia_control.enc_id = enc->preferred_engine; if (signal == SIGNAL_TYPE_DISPLAY_PORT) { dpia_control.mode_laneset.digmode = 0; /* 0 for SST; 5 for MST */ } else if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { dpia_control.mode_laneset.digmode = 5; /* 0 for SST; 5 for MST */ } else { DC_LOG_ERROR("%s: USB4 DPIA only supports DisplayPort.\n", __func__); BREAK_TO_DEBUGGER(); } if (link) { dpia_control.dpia_id = link->ddc_hw_inst; } else { DC_LOG_ERROR("%s: Failed to execute DPIA enable DMUB command.\n", __func__); BREAK_TO_DEBUGGER(); return; } DC_LOG_DEBUG("%s: DPIA(%d) - enc_id(%d)\n", __func__, dpia_control.dpia_id, dpia_control.enc_id); link_dpia_control(enc->ctx, &dpia_control); link_encoder_disable(enc10); } } bool dcn31_link_encoder_is_in_alt_mode(struct link_encoder *enc) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); union dmub_rb_cmd cmd; uint32_t dp_alt_mode_disable; /* Only applicable to USB-C PHY. */ if (!enc->features.flags.bits.DP_IS_USB_C) return false; /* * Use the new interface from DMCUB if available. * Avoids hanging the RDCPSPIPE if DMCUB wasn't already running. */ if (has_query_dp_alt(enc)) { if (!query_dp_alt_from_dmub(enc, &cmd)) return false; return (cmd.query_dp_alt.data.is_dp_alt_disable == 0); } /* Legacy path, avoid if possible. */ if (enc->ctx->asic_id.hw_internal_rev != YELLOW_CARP_B0) { REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE, &dp_alt_mode_disable); } else { /* * B0 phys use a new set of registers to check whether alt mode is disabled. * if value == 1 alt mode is disabled, otherwise it is enabled. */ if ((enc10->base.transmitter == TRANSMITTER_UNIPHY_A) || (enc10->base.transmitter == TRANSMITTER_UNIPHY_B) || (enc10->base.transmitter == TRANSMITTER_UNIPHY_E)) { REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE, &dp_alt_mode_disable); } else { REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DISABLE, &dp_alt_mode_disable); } } return (dp_alt_mode_disable == 0); } void dcn31_link_encoder_get_max_link_cap(struct link_encoder *enc, struct dc_link_settings *link_settings) { struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc); union dmub_rb_cmd cmd; uint32_t is_in_usb_c_dp4_mode = 0; dcn10_link_encoder_get_max_link_cap(enc, link_settings); /* Take the link cap directly if not USB */ if (!enc->features.flags.bits.DP_IS_USB_C) return; /* * Use the new interface from DMCUB if available. * Avoids hanging the RDCPSPIPE if DMCUB wasn't already running. */ if (has_query_dp_alt(enc)) { if (!query_dp_alt_from_dmub(enc, &cmd)) return; if (cmd.query_dp_alt.data.is_usb && cmd.query_dp_alt.data.is_dp4 == 0) link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count); return; } /* Legacy path, avoid if possible. */ if (enc->ctx->asic_id.hw_internal_rev != YELLOW_CARP_B0) { REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DP4, &is_in_usb_c_dp4_mode); } else { if ((enc10->base.transmitter == TRANSMITTER_UNIPHY_A) || (enc10->base.transmitter == TRANSMITTER_UNIPHY_B) || (enc10->base.transmitter == TRANSMITTER_UNIPHY_E)) { REG_GET(RDPCSTX_PHY_CNTL6, RDPCS_PHY_DPALT_DP4, &is_in_usb_c_dp4_mode); } else { REG_GET(RDPCSPIPE_PHY_CNTL6, RDPCS_PHY_DPALT_DP4, &is_in_usb_c_dp4_mode); } } if (!is_in_usb_c_dp4_mode) link_settings->lane_count = MIN(LANE_COUNT_TWO, link_settings->lane_count); }