diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 333 |
1 files changed, 228 insertions, 105 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index afa43181dec6..9e08410bfdfd 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -14,6 +14,7 @@ #include "dpcd_defs.h" #include "dc_dmub_srv.h" #include "dce/dmub_hw_lock_mgr.h" +#include "inc/link_enc_cfg.h" /*Travis*/ static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT"; @@ -107,10 +108,50 @@ static void wait_for_training_aux_rd_interval( wait_in_micro_secs); } +static enum dpcd_training_patterns + dc_dp_training_pattern_to_dpcd_training_pattern( + struct dc_link *link, + enum dc_dp_training_pattern pattern) +{ + enum dpcd_training_patterns dpcd_tr_pattern = + DPCD_TRAINING_PATTERN_VIDEOIDLE; + + switch (pattern) { + case DP_TRAINING_PATTERN_SEQUENCE_1: + dpcd_tr_pattern = DPCD_TRAINING_PATTERN_1; + break; + case DP_TRAINING_PATTERN_SEQUENCE_2: + dpcd_tr_pattern = DPCD_TRAINING_PATTERN_2; + break; + case DP_TRAINING_PATTERN_SEQUENCE_3: + dpcd_tr_pattern = DPCD_TRAINING_PATTERN_3; + break; + case DP_TRAINING_PATTERN_SEQUENCE_4: + dpcd_tr_pattern = DPCD_TRAINING_PATTERN_4; + break; + case DP_TRAINING_PATTERN_VIDEOIDLE: + dpcd_tr_pattern = DPCD_TRAINING_PATTERN_VIDEOIDLE; + break; + default: + ASSERT(0); + DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n", + __func__, pattern); + break; + } + + return dpcd_tr_pattern; +} + static void dpcd_set_training_pattern( struct dc_link *link, - union dpcd_training_pattern dpcd_pattern) + enum dc_dp_training_pattern training_pattern) { + union dpcd_training_pattern dpcd_pattern = { {0} }; + + dpcd_pattern.v1_4.TRAINING_PATTERN_SET = + dc_dp_training_pattern_to_dpcd_training_pattern( + link, training_pattern); + core_link_write_dpcd( link, DP_TRAINING_PATTERN_SET, @@ -132,10 +173,22 @@ static enum dc_dp_training_pattern decide_cr_training_pattern( static enum dc_dp_training_pattern decide_eq_training_pattern(struct dc_link *link, const struct dc_link_settings *link_settings) { + struct link_encoder *link_enc; enum dc_dp_training_pattern highest_tp = DP_TRAINING_PATTERN_SEQUENCE_2; - struct encoder_feature_support *features = &link->link_enc->features; + struct encoder_feature_support *features; struct dpcd_caps *dpcd_caps = &link->dpcd_caps; + /* Access link encoder capability based on whether it is statically + * or dynamically assigned to a link. + */ + if (link->is_dig_mapping_flexible && + link->dc->res_pool->funcs->link_encs_assign) + link_enc = link_enc_cfg_get_link_enc_used_by_link(link->dc->current_state, link); + else + link_enc = link->link_enc; + ASSERT(link_enc); + features = &link_enc->features; + if (features->flags.bits.IS_TPS3_CAPABLE) highest_tp = DP_TRAINING_PATTERN_SEQUENCE_3; @@ -227,37 +280,6 @@ static void dpcd_set_link_settings( } } -static enum dpcd_training_patterns - dc_dp_training_pattern_to_dpcd_training_pattern( - struct dc_link *link, - enum dc_dp_training_pattern pattern) -{ - enum dpcd_training_patterns dpcd_tr_pattern = - DPCD_TRAINING_PATTERN_VIDEOIDLE; - - switch (pattern) { - case DP_TRAINING_PATTERN_SEQUENCE_1: - dpcd_tr_pattern = DPCD_TRAINING_PATTERN_1; - break; - case DP_TRAINING_PATTERN_SEQUENCE_2: - dpcd_tr_pattern = DPCD_TRAINING_PATTERN_2; - break; - case DP_TRAINING_PATTERN_SEQUENCE_3: - dpcd_tr_pattern = DPCD_TRAINING_PATTERN_3; - break; - case DP_TRAINING_PATTERN_SEQUENCE_4: - dpcd_tr_pattern = DPCD_TRAINING_PATTERN_4; - break; - default: - ASSERT(0); - DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n", - __func__, pattern); - break; - } - - return dpcd_tr_pattern; -} - static uint8_t dc_dp_initialize_scrambling_data_symbols( struct dc_link *link, enum dc_dp_training_pattern pattern) @@ -420,20 +442,30 @@ static bool is_cr_done(enum dc_lane_count ln_count, } static bool is_ch_eq_done(enum dc_lane_count ln_count, - union lane_status *dpcd_lane_status, - union lane_align_status_updated *lane_status_updated) + union lane_status *dpcd_lane_status) { + bool done = true; uint32_t lane; - if (!lane_status_updated->bits.INTERLANE_ALIGN_DONE) - return false; - else { - for (lane = 0; lane < (uint32_t)(ln_count); lane++) { - if (!dpcd_lane_status[lane].bits.SYMBOL_LOCKED_0 || - !dpcd_lane_status[lane].bits.CHANNEL_EQ_DONE_0) - return false; - } - } - return true; + for (lane = 0; lane < (uint32_t)(ln_count); lane++) + if (!dpcd_lane_status[lane].bits.CHANNEL_EQ_DONE_0) + done = false; + return done; +} + +static bool is_symbol_locked(enum dc_lane_count ln_count, + union lane_status *dpcd_lane_status) +{ + bool locked = true; + uint32_t lane; + for (lane = 0; lane < (uint32_t)(ln_count); lane++) + if (!dpcd_lane_status[lane].bits.SYMBOL_LOCKED_0) + locked = false; + return locked; +} + +static inline bool is_interlane_aligned(union lane_align_status_updated align_status) +{ + return align_status.bits.INTERLANE_ALIGN_DONE == 1; } static void update_drive_settings( @@ -835,10 +867,9 @@ static bool perform_post_lt_adj_req_sequence( if (!is_cr_done(lane_count, dpcd_lane_status)) return false; - if (!is_ch_eq_done( - lane_count, - dpcd_lane_status, - &dpcd_lane_status_updated)) + if (!is_ch_eq_done(lane_count, dpcd_lane_status) || + !is_symbol_locked(lane_count, dpcd_lane_status) || + !is_interlane_aligned(dpcd_lane_status_updated)) return false; for (lane = 0; lane < (uint32_t)(lane_count); lane++) { @@ -992,9 +1023,9 @@ static enum link_training_result perform_channel_equalization_sequence( return LINK_TRAINING_EQ_FAIL_CR; /* 6. check CHEQ done*/ - if (is_ch_eq_done(lane_count, - dpcd_lane_status, - &dpcd_lane_status_updated)) + if (is_ch_eq_done(lane_count, dpcd_lane_status) && + is_symbol_locked(lane_count, dpcd_lane_status) && + is_interlane_aligned(dpcd_lane_status_updated)) return LINK_TRAINING_SUCCESS; /* 7. update VS/PE/PC2 in lt_settings*/ @@ -1126,7 +1157,7 @@ static enum link_training_result perform_clock_recovery_sequence( return get_cr_failure(lane_count, dpcd_lane_status); } -static inline enum link_training_result perform_link_training_int( +static inline enum link_training_result dp_transition_to_video_idle( struct dc_link *link, struct link_training_settings *lt_settings, enum link_training_result status) @@ -1162,7 +1193,7 @@ static inline enum link_training_result perform_link_training_int( return status; } -static enum link_training_result check_link_loss_status( +enum link_training_result dp_check_link_loss_status( struct dc_link *link, const struct link_training_settings *link_training_setting) { @@ -1200,7 +1231,7 @@ static enum link_training_result check_link_loss_status( return status; } -static void initialize_training_settings( +static inline void decide_8b_10b_training_settings( struct dc_link *link, const struct dc_link_settings *link_setting, const struct dc_link_training_overrides *overrides, @@ -1244,6 +1275,8 @@ static void initialize_training_settings( else lt_settings->link_settings.link_spread = LINK_SPREAD_05_DOWNSPREAD_30KHZ; + lt_settings->lttpr_mode = link->lttpr_mode; + /* Initialize lane settings overrides */ if (overrides->voltage_swing != NULL) lt_settings->voltage_swing = overrides->voltage_swing; @@ -1296,7 +1329,18 @@ static void initialize_training_settings( lt_settings->enhanced_framing = 1; } -static uint8_t convert_to_count(uint8_t lttpr_repeater_count) +static void decide_training_settings( + struct dc_link *link, + const struct dc_link_settings *link_settings, + const struct dc_link_training_overrides *overrides, + struct link_training_settings *lt_settings) +{ + if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING) + decide_8b_10b_training_settings(link, link_settings, overrides, lt_settings); +} + + +uint8_t dp_convert_to_count(uint8_t lttpr_repeater_count) { switch (lttpr_repeater_count) { case 0x80: // 1 lttpr repeater @@ -1325,13 +1369,16 @@ static void configure_lttpr_mode_transparent(struct dc_link *link) { uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT; + DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__); core_link_write_dpcd(link, DP_PHY_REPEATER_MODE, (uint8_t *)&repeater_mode, sizeof(repeater_mode)); } -static void configure_lttpr_mode_non_transparent(struct dc_link *link) +static void configure_lttpr_mode_non_transparent( + struct dc_link *link, + const struct link_training_settings *lt_settings) { /* aux timeout is already set to extended */ /* RESET/SET lttpr mode to enable non transparent mode */ @@ -1341,11 +1388,16 @@ static void configure_lttpr_mode_non_transparent(struct dc_link *link) enum dc_status result = DC_ERROR_UNEXPECTED; uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT; - DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__); - result = core_link_write_dpcd(link, - DP_PHY_REPEATER_MODE, - (uint8_t *)&repeater_mode, - sizeof(repeater_mode)); + enum dp_link_encoding encoding = dp_get_link_encoding_format(<_settings->link_settings); + + if (encoding == DP_8b_10b_ENCODING) { + DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__); + result = core_link_write_dpcd(link, + DP_PHY_REPEATER_MODE, + (uint8_t *)&repeater_mode, + sizeof(repeater_mode)); + + } if (result == DC_OK) { link->dpcd_caps.lttpr_caps.mode = repeater_mode; @@ -1365,16 +1417,18 @@ static void configure_lttpr_mode_non_transparent(struct dc_link *link) link->dpcd_caps.lttpr_caps.mode = repeater_mode; } - repeater_cnt = convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt); - for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) { - aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 + - ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1)); - core_link_read_dpcd( - link, - aux_interval_address, - (uint8_t *)&link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1], - sizeof(link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1])); - link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1] &= 0x7F; + if (encoding == DP_8b_10b_ENCODING) { + repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt); + for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) { + aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 + + ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1)); + core_link_read_dpcd( + link, + aux_interval_address, + (uint8_t *)&link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1], + sizeof(link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1])); + link->dpcd_caps.lttpr_caps.aux_rd_interval[repeater_id - 1] &= 0x7F; + } } } } @@ -1510,7 +1564,7 @@ bool dc_link_dp_perform_link_training_skip_aux( { struct link_training_settings lt_settings; - initialize_training_settings( + decide_training_settings( link, link_setting, &link->preferred_training_settings, @@ -1555,13 +1609,12 @@ enum link_training_result dc_link_dp_perform_link_training( { enum link_training_result status = LINK_TRAINING_SUCCESS; struct link_training_settings lt_settings; - union dpcd_training_pattern dpcd_pattern = { { 0 } }; bool fec_enable; uint8_t repeater_cnt; uint8_t repeater_id; - initialize_training_settings( + decide_training_settings( link, link_setting, &link->preferred_training_settings, @@ -1569,7 +1622,7 @@ enum link_training_result dc_link_dp_perform_link_training( /* Configure lttpr mode */ if (link->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) - configure_lttpr_mode_non_transparent(link); + configure_lttpr_mode_non_transparent(link, <_settings); else if (link->lttpr_mode == LTTPR_MODE_TRANSPARENT) configure_lttpr_mode_transparent(link); @@ -1591,7 +1644,7 @@ enum link_training_result dc_link_dp_perform_link_training( /* 2. perform link training (set link training done * to false is done as well) */ - repeater_cnt = convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt); + repeater_cnt = dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt); for (repeater_id = repeater_cnt; (repeater_id > 0 && status == LINK_TRAINING_SUCCESS); repeater_id--) { @@ -1621,10 +1674,9 @@ enum link_training_result dc_link_dp_perform_link_training( } /* 3. set training not in progress*/ - dpcd_pattern.v1_4.TRAINING_PATTERN_SET = DPCD_TRAINING_PATTERN_VIDEOIDLE; - dpcd_set_training_pattern(link, dpcd_pattern); + dpcd_set_training_pattern(link, DP_TRAINING_PATTERN_VIDEOIDLE); if ((status == LINK_TRAINING_SUCCESS) || !skip_video_pattern) { - status = perform_link_training_int(link, + status = dp_transition_to_video_idle(link, <_settings, status); } @@ -1634,7 +1686,7 @@ enum link_training_result dc_link_dp_perform_link_training( */ if (link->connector_signal != SIGNAL_TYPE_EDP && status == LINK_TRAINING_SUCCESS) { msleep(5); - status = check_link_loss_status(link, <_settings); + status = dp_check_link_loss_status(link, <_settings); } /* 6. print status message*/ @@ -1687,18 +1739,31 @@ bool perform_link_training_with_retries( bool skip_video_pattern, int attempts, struct pipe_ctx *pipe_ctx, - enum signal_type signal) + enum signal_type signal, + bool do_fallback) { uint8_t j; uint8_t delay_between_attempts = LINK_TRAINING_RETRY_DELAY; struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; enum dp_panel_mode panel_mode; + struct link_encoder *link_enc; + enum link_training_result status = LINK_TRAINING_CR_FAIL_LANE0; + struct dc_link_settings currnet_setting = *link_setting; + + /* Dynamically assigned link encoders associated with stream rather than + * link. + */ + if (link->dc->res_pool->funcs->link_encs_assign) + link_enc = stream->link_enc; + else + link_enc = link->link_enc; + ASSERT(link_enc); /* We need to do this before the link training to ensure the idle pattern in SST * mode will be sent right after the link training */ - link->link_enc->funcs->connect_dig_be_to_fe(link->link_enc, + link_enc->funcs->connect_dig_be_to_fe(link_enc, pipe_ctx->stream_res.stream_enc->id, true); for (j = 0; j < attempts; ++j) { @@ -1710,7 +1775,7 @@ bool perform_link_training_with_retries( link, signal, pipe_ctx->clock_source->id, - link_setting); + &currnet_setting); if (stream->sink_patches.dppowerup_delay > 0) { int delay_dp_power_up_in_ms = stream->sink_patches.dppowerup_delay; @@ -1725,14 +1790,12 @@ bool perform_link_training_with_retries( panel_mode != DP_PANEL_MODE_DEFAULT); if (link->aux_access_disabled) { - dc_link_dp_perform_link_training_skip_aux(link, link_setting); + dc_link_dp_perform_link_training_skip_aux(link, &currnet_setting); return true; } else { - enum link_training_result status = LINK_TRAINING_CR_FAIL_LANE0; - status = dc_link_dp_perform_link_training( link, - link_setting, + &currnet_setting, skip_video_pattern); if (status == LINK_TRAINING_SUCCESS) return true; @@ -1740,7 +1803,7 @@ bool perform_link_training_with_retries( /* latest link training still fail, skip delay and keep PHY on */ - if (j == (attempts - 1)) + if (j == (attempts - 1) && link->ep_type == DISPLAY_ENDPOINT_PHY) break; DC_LOG_WARNING("%s: Link training attempt %u of %d failed\n", @@ -1748,6 +1811,19 @@ bool perform_link_training_with_retries( dp_disable_link_phy(link, signal); + /* Abort link training if failure due to sink being unplugged. */ + if (status == LINK_TRAINING_ABORT) + break; + else if (do_fallback) { + decide_fallback_link_setting(*link_setting, &currnet_setting, status); + /* Fail link training if reduced link bandwidth no longer meets + * stream requirements. + */ + if (dc_bandwidth_in_kbps_from_timing(&stream->timing) < + dc_link_bandwidth_kbps(link, &currnet_setting)) + break; + } + msleep(delay_between_attempts); delay_between_attempts += LINK_TRAINING_RETRY_DELAY; @@ -1823,7 +1899,7 @@ enum link_training_result dc_link_dp_sync_lt_attempt( enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_EXTERNAL; bool fec_enable = false; - initialize_training_settings( + decide_training_settings( link, link_settings, lt_overrides, @@ -2429,6 +2505,12 @@ bool dp_validate_mode_timing( const struct dc_link_settings *link_setting; + /* According to spec, VSC SDP should be used if pixel format is YCbCr420 */ + if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420 && + !link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED && + dal_graphics_object_id_get_connector_id(link->link_id) != CONNECTOR_ID_VIRTUAL) + return false; + /*always DP fail safe mode*/ if ((timing->pix_clk_100hz / 10) == (uint32_t) 25175 && timing->h_addressable == (uint32_t) 640 && @@ -2513,7 +2595,11 @@ bool decide_edp_link_settings(struct dc_link *link, struct dc_link_settings *lin struct dc_link_settings current_link_setting; uint32_t link_bw; - if (link->dpcd_caps.dpcd_rev.raw < DPCD_REV_14 || + /* + * edp_supported_link_rates_count is only valid for eDP v1.4 or higher. + * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h" + */ + if (link->dpcd_caps.dpcd_rev.raw < DPCD_REV_13 || link->dpcd_caps.edp_supported_link_rates_count == 0) { *link_setting = link->verified_link_cap; return true; @@ -2611,13 +2697,11 @@ static bool allow_hpd_rx_irq(const struct dc_link *link) /* * Don't handle RX IRQ unless one of following is met: * 1) The link is established (cur_link_settings != unknown) - * 2) We kicked off MST detection - * 3) We know we're dealing with an active dongle + * 2) We know we're dealing with a branch device, SST or MST */ if ((link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) || - (link->type == dc_connection_mst_branch) || - is_dp_active_dongle(link)) + is_dp_branch_device(link)) return true; return false; @@ -2715,9 +2799,10 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link) union phy_test_pattern dpcd_test_pattern; union lane_adjust dpcd_lane_adjustment[2]; unsigned char dpcd_post_cursor_2_adjustment = 0; - unsigned char test_80_bit_pattern[ + unsigned char test_pattern_buffer[ (DP_TEST_80BIT_CUSTOM_PATTERN_79_72 - DP_TEST_80BIT_CUSTOM_PATTERN_7_0)+1] = {0}; + unsigned int test_pattern_size = 0; enum dp_test_pattern test_pattern; struct dc_link_training_settings link_settings; union lane_adjust dpcd_lane_adjust; @@ -2787,12 +2872,15 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link) break; } - if (test_pattern == DP_TEST_PATTERN_80BIT_CUSTOM) + if (test_pattern == DP_TEST_PATTERN_80BIT_CUSTOM) { + test_pattern_size = (DP_TEST_80BIT_CUSTOM_PATTERN_79_72 - + DP_TEST_80BIT_CUSTOM_PATTERN_7_0) + 1; core_link_read_dpcd( link, DP_TEST_80BIT_CUSTOM_PATTERN_7_0, - test_80_bit_pattern, - sizeof(test_80_bit_pattern)); + test_pattern_buffer, + test_pattern_size); + } /* prepare link training settings */ link_settings.link = link->cur_link_settings; @@ -2830,9 +2918,8 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link) test_pattern, DP_TEST_PATTERN_COLOR_SPACE_UNDEFINED, &link_training_settings, - test_80_bit_pattern, - (DP_TEST_80BIT_CUSTOM_PATTERN_79_72 - - DP_TEST_80BIT_CUSTOM_PATTERN_7_0)+1); + test_pattern_buffer, + test_pattern_size); } static void dp_test_send_link_test_pattern(struct dc_link *link) @@ -2917,6 +3004,22 @@ static void dp_test_send_link_test_pattern(struct dc_link *link) break; } + switch (dpcd_test_params.bits.CLR_FORMAT) { + case 0: + pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_RGB; + break; + case 1: + pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_YCBCR422; + break; + case 2: + pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_YCBCR444; + break; + default: + pipe_ctx->stream->timing.pixel_encoding = PIXEL_ENCODING_RGB; + break; + } + + if (requestColorDepth != COLOR_DEPTH_UNDEFINED && pipe_ctx->stream->timing.display_color_depth != requestColorDepth) { DC_LOG_DEBUG("%s: original bpc %d, changing to %d\n", @@ -2924,9 +3027,10 @@ static void dp_test_send_link_test_pattern(struct dc_link *link) pipe_ctx->stream->timing.display_color_depth, requestColorDepth); pipe_ctx->stream->timing.display_color_depth = requestColorDepth; - dp_update_dsc_config(pipe_ctx); } + dp_update_dsc_config(pipe_ctx); + dc_link_dp_set_test_pattern( link, test_pattern, @@ -3182,7 +3286,7 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd *out_link_loss = true; } - if (link->type == dc_connection_active_dongle && + if (link->type == dc_connection_sst_branch && hpd_irq_dpcd_data.bytes.sink_cnt.bits.SINK_COUNT != link->dpcd_sink_count) status = true; @@ -3233,6 +3337,12 @@ bool is_mst_supported(struct dc_link *link) bool is_dp_active_dongle(const struct dc_link *link) { + return (link->dpcd_caps.dongle_type >= DISPLAY_DONGLE_DP_VGA_CONVERTER) && + (link->dpcd_caps.dongle_type <= DISPLAY_DONGLE_DP_HDMI_CONVERTER); +} + +bool is_dp_branch_device(const struct dc_link *link) +{ return link->dpcd_caps.is_branch_dev; } @@ -3593,7 +3703,9 @@ static bool retrieve_link_cap(struct dc_link *link) lttpr_dpcd_data[DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT - DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV]; + /* Attempt to train in LTTPR transparent mode if repeater count exceeds 8. */ is_lttpr_present = (link->dpcd_caps.lttpr_caps.phy_repeater_cnt > 0 && + link->dpcd_caps.lttpr_caps.phy_repeater_cnt < 0xff && link->dpcd_caps.lttpr_caps.max_lane_count > 0 && link->dpcd_caps.lttpr_caps.max_lane_count <= 4 && link->dpcd_caps.lttpr_caps.revision.raw >= 0x14); @@ -3910,7 +4022,11 @@ void detect_edp_sink_caps(struct dc_link *link) link->dpcd_caps.edp_supported_link_rates_count = 0; memset(supported_link_rates, 0, sizeof(supported_link_rates)); - if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14 && + /* + * edp_supported_link_rates_count is only valid for eDP v1.4 or higher. + * Per VESA eDP spec, "The DPCD revision for eDP v1.4 is 13h" + */ + if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 && (link->dc->debug.optimize_edp_link_rate || link->reported_link_cap.link_rate == LINK_RATE_UNKNOWN)) { // Read DPCD 00010h - 0001Fh 16 bytes at one shot @@ -4784,4 +4900,11 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin return false; } +enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings) +{ + if ((link_settings->link_rate >= LINK_RATE_LOW) && + (link_settings->link_rate <= LINK_RATE_HIGH3)) + return DP_8b_10b_ENCODING; + return DP_UNKNOWN_ENCODING; +} |