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 | 579 |
1 files changed, 561 insertions, 18 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 cb7bf9148904..8a35370da867 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 @@ -100,6 +100,7 @@ static const struct dp_lt_fallback_entry dp_lt_fallbacks[] = { #endif static bool decide_fallback_link_setting( + struct dc_link *link, struct dc_link_settings initial_link_settings, struct dc_link_settings *current_link_setting, enum link_training_result training_result); @@ -398,6 +399,223 @@ static uint8_t get_dpcd_link_rate(const struct dc_link_settings *link_settings) } #endif +static void vendor_specific_lttpr_wa_one_start(struct dc_link *link) +{ + const uint8_t vendor_lttpr_write_data[4] = {0x1, 0x50, 0x63, 0xff}; + const uint8_t offset = dp_convert_to_count( + link->dpcd_caps.lttpr_caps.phy_repeater_cnt); + uint32_t vendor_lttpr_write_address = 0xF004F; + + if (offset != 0xFF) + vendor_lttpr_write_address += + ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1)); + + /* W/A for certain LTTPR to reset their lane settings, part one of two */ + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data[0], + sizeof(vendor_lttpr_write_data)); +} + +static void vendor_specific_lttpr_wa_one_end( + struct dc_link *link, + uint8_t retry_count) +{ + const uint8_t vendor_lttpr_write_data[4] = {0x1, 0x50, 0x63, 0x0}; + const uint8_t offset = dp_convert_to_count( + link->dpcd_caps.lttpr_caps.phy_repeater_cnt); + uint32_t vendor_lttpr_write_address = 0xF004F; + + if (!retry_count) { + if (offset != 0xFF) + vendor_lttpr_write_address += + ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1)); + + /* W/A for certain LTTPR to reset their lane settings, part two of two */ + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data[0], + sizeof(vendor_lttpr_write_data)); + } +} + +static void vendor_specific_lttpr_wa_one_two( + struct dc_link *link, + const uint8_t rate) +{ + if (link->apply_vendor_specific_lttpr_link_rate_wa) { + uint8_t toggle_rate = 0x0; + + if (rate == 0x6) + toggle_rate = 0xA; + else + toggle_rate = 0x6; + + if (link->vendor_specific_lttpr_link_rate_wa == rate) { + /* W/A for certain LTTPR to reset internal state for link training */ + core_link_write_dpcd( + link, + DP_LINK_BW_SET, + &toggle_rate, + 1); + } + + /* Store the last attempted link rate for this link */ + link->vendor_specific_lttpr_link_rate_wa = rate; + } +} + +static void vendor_specific_lttpr_wa_three( + struct dc_link *link, + union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX]) +{ + const uint8_t vendor_lttpr_write_data_vs[3] = {0x0, 0x53, 0x63}; + const uint8_t vendor_lttpr_write_data_pe[3] = {0x0, 0x54, 0x63}; + const uint8_t offset = dp_convert_to_count( + link->dpcd_caps.lttpr_caps.phy_repeater_cnt); + uint32_t vendor_lttpr_write_address = 0xF004F; + uint32_t vendor_lttpr_read_address = 0xF0053; + uint8_t dprx_vs = 0; + uint8_t dprx_pe = 0; + uint8_t lane; + + if (offset != 0xFF) { + vendor_lttpr_write_address += + ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1)); + vendor_lttpr_read_address += + ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1)); + } + + /* W/A to read lane settings requested by DPRX */ + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data_vs[0], + sizeof(vendor_lttpr_write_data_vs)); + core_link_read_dpcd( + link, + vendor_lttpr_read_address, + &dprx_vs, + 1); + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data_pe[0], + sizeof(vendor_lttpr_write_data_pe)); + core_link_read_dpcd( + link, + vendor_lttpr_read_address, + &dprx_pe, + 1); + + for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) { + dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_LANE = (dprx_vs >> (2 * lane)) & 0x3; + dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_LANE = (dprx_pe >> (2 * lane)) & 0x3; + } +} + +static void vendor_specific_lttpr_wa_three_dpcd( + struct dc_link *link, + union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX]) +{ + union lane_adjust lane_adjust[LANE_COUNT_DP_MAX]; + uint8_t lane = 0; + + vendor_specific_lttpr_wa_three(link, lane_adjust); + + for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) { + dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET = lane_adjust[lane].bits.VOLTAGE_SWING_LANE; + dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET = lane_adjust[lane].bits.PRE_EMPHASIS_LANE; + } +} + +static void vendor_specific_lttpr_wa_four( + struct dc_link *link, + bool apply_wa) +{ + const uint8_t vendor_lttpr_write_data_one[4] = {0x1, 0x55, 0x63, 0x8}; + const uint8_t vendor_lttpr_write_data_two[4] = {0x1, 0x55, 0x63, 0x0}; + const uint8_t offset = dp_convert_to_count( + link->dpcd_caps.lttpr_caps.phy_repeater_cnt); + uint32_t vendor_lttpr_write_address = 0xF004F; +#if defined(CONFIG_DRM_AMD_DC_DP2_0) + uint8_t sink_status = 0; + uint8_t i; +#endif + + if (offset != 0xFF) + vendor_lttpr_write_address += + ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1)); + + /* W/A to pass through DPCD write of TPS=0 to DPRX */ + if (apply_wa) { + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data_one[0], + sizeof(vendor_lttpr_write_data_one)); + } + + /* clear training pattern set */ + dpcd_set_training_pattern(link, DP_TRAINING_PATTERN_VIDEOIDLE); + + if (apply_wa) { + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data_two[0], + sizeof(vendor_lttpr_write_data_two)); + } + +#if defined(CONFIG_DRM_AMD_DC_DP2_0) + /* poll for intra-hop disable */ + for (i = 0; i < 10; i++) { + if ((core_link_read_dpcd(link, DP_SINK_STATUS, &sink_status, 1) == DC_OK) && + (sink_status & DP_INTRA_HOP_AUX_REPLY_INDICATION) == 0) + break; + udelay(1000); + } +#endif +} + +static void vendor_specific_lttpr_wa_five( + struct dc_link *link, + const union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX], + uint8_t lane_count) +{ + const uint32_t vendor_lttpr_write_address = 0xF004F; + const uint8_t vendor_lttpr_write_data_reset[4] = {0x1, 0x50, 0x63, 0xFF}; + uint8_t vendor_lttpr_write_data_vs[4] = {0x1, 0x51, 0x63, 0x0}; + uint8_t vendor_lttpr_write_data_pe[4] = {0x1, 0x52, 0x63, 0x0}; + uint8_t lane = 0; + + for (lane = 0; lane < lane_count; lane++) { + vendor_lttpr_write_data_vs[3] |= + dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET << (2 * lane); + vendor_lttpr_write_data_pe[3] |= + dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET << (2 * lane); + } + + /* Force LTTPR to output desired VS and PE */ + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data_reset[0], + sizeof(vendor_lttpr_write_data_reset)); + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data_vs[0], + sizeof(vendor_lttpr_write_data_vs)); + core_link_write_dpcd( + link, + vendor_lttpr_write_address, + &vendor_lttpr_write_data_pe[0], + sizeof(vendor_lttpr_write_data_pe)); +} + enum dc_status dpcd_set_link_settings( struct dc_link *link, const struct link_training_settings *lt_settings) @@ -430,7 +648,7 @@ enum dc_status dpcd_set_link_settings( status = core_link_write_dpcd(link, DP_LANE_COUNT_SET, &lane_count_set.raw, 1); - if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_14 && + if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_13 && lt_settings->link_settings.use_link_rate_set == true) { rate = 0; /* WA for some MUX chips that will power down with eDP and lose supported @@ -452,6 +670,15 @@ enum dc_status dpcd_set_link_settings( #else rate = (uint8_t) (lt_settings->link_settings.link_rate); #endif + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + link->lttpr_mode == LTTPR_MODE_TRANSPARENT) + vendor_specific_lttpr_wa_one_start(link); + + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN)) + vendor_specific_lttpr_wa_one_two(link, rate); + status = core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1); } @@ -1211,6 +1438,12 @@ static enum link_training_result perform_channel_equalization_sequence( dp_translate_training_aux_read_interval( link->dpcd_caps.lttpr_caps.aux_rd_interval[offset - 1]); + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + link->lttpr_mode == LTTPR_MODE_TRANSPARENT) { + wait_time_microsec = 16000; + } + dp_wait_for_training_aux_rd_interval( link, wait_time_microsec); @@ -1314,6 +1547,11 @@ static enum link_training_result perform_clock_recovery_sequence( if (link->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) wait_time_microsec = TRAINING_AUX_RD_INTERVAL; + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN)) { + wait_time_microsec = 16000; + } + dp_wait_for_training_aux_rd_interval( link, wait_time_microsec); @@ -1329,6 +1567,13 @@ static enum link_training_result perform_clock_recovery_sequence( dpcd_lane_adjust, offset); + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + link->lttpr_mode == LTTPR_MODE_TRANSPARENT) { + vendor_specific_lttpr_wa_one_end(link, retry_count); + vendor_specific_lttpr_wa_three(link, dpcd_lane_adjust); + } + /* 5. check CR done*/ if (dp_is_cr_done(lane_count, dpcd_lane_status)) return LINK_TRAINING_SUCCESS; @@ -2138,7 +2383,7 @@ static enum link_training_result dp_perform_8b_10b_link_training( } for (lane = 0; lane < (uint8_t)lt_settings->link_settings.lane_count; lane++) - lt_settings->dpcd_lane_settings[lane].bits.VOLTAGE_SWING_SET = VOLTAGE_SWING_LEVEL0; + lt_settings->dpcd_lane_settings[lane].raw = 0; } if (status == LINK_TRAINING_SUCCESS) { @@ -2203,7 +2448,14 @@ enum link_training_result dc_link_dp_perform_link_training( <_settings); /* reset previous training states */ - dpcd_exit_training_mode(link); + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + link->lttpr_mode == LTTPR_MODE_TRANSPARENT) { + link->apply_vendor_specific_lttpr_link_rate_wa = true; + vendor_specific_lttpr_wa_four(link, true); + } else { + dpcd_exit_training_mode(link); + } /* configure link prior to entering training mode */ dpcd_configure_lttpr_mode(link, <_settings); @@ -2223,8 +2475,17 @@ enum link_training_result dc_link_dp_perform_link_training( else ASSERT(0); - /* exit training mode and switch to video idle */ - dpcd_exit_training_mode(link); + /* exit training mode */ + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + link->lttpr_mode == LTTPR_MODE_TRANSPARENT) { + link->apply_vendor_specific_lttpr_link_rate_wa = false; + vendor_specific_lttpr_wa_four(link, (status != LINK_TRAINING_SUCCESS)); + } else { + dpcd_exit_training_mode(link); + } + + /* switch to video idle */ if ((status == LINK_TRAINING_SUCCESS) || !skip_video_pattern) status = dp_transition_to_video_idle(link, <_settings, @@ -2349,7 +2610,7 @@ bool perform_link_training_with_retries( uint32_t req_bw; uint32_t link_bw; - decide_fallback_link_setting(*link_setting, ¤t_setting, status); + decide_fallback_link_setting(link, *link_setting, ¤t_setting, status); /* Fail link training if reduced link bandwidth no longer meets * stream requirements. */ @@ -2864,7 +3125,7 @@ bool dp_verify_link_cap( * based on the actual mode we're driving */ dp_disable_link_phy(link, link->connector_signal); - } while (!success && decide_fallback_link_setting( + } while (!success && decide_fallback_link_setting(link, initial_link_settings, cur, status)); /* Link Training failed for all Link Settings @@ -3116,6 +3377,7 @@ static bool decide_fallback_link_setting_max_bw_policy( * and no further fallback could be done */ static bool decide_fallback_link_setting( + struct dc_link *link, struct dc_link_settings initial_link_settings, struct dc_link_settings *current_link_setting, enum link_training_result training_result) @@ -3123,7 +3385,8 @@ static bool decide_fallback_link_setting( if (!current_link_setting) return false; #if defined(CONFIG_DRM_AMD_DC_DCN) - if (dp_get_link_encoding_format(&initial_link_settings) == DP_128b_132b_ENCODING) + if (dp_get_link_encoding_format(&initial_link_settings) == DP_128b_132b_ENCODING || + link->dc->debug.force_dp2_lt_fallback_method) return decide_fallback_link_setting_max_bw_policy(&initial_link_settings, current_link_setting); #endif @@ -3346,6 +3609,148 @@ bool decide_edp_link_settings(struct dc_link *link, struct dc_link_settings *lin return false; } +static bool decide_edp_link_settings_with_dsc(struct dc_link *link, + struct dc_link_settings *link_setting, + uint32_t req_bw, + enum dc_link_rate max_link_rate) +{ + struct dc_link_settings initial_link_setting; + struct dc_link_settings current_link_setting; + uint32_t link_bw; + + unsigned int policy = 0; + + policy = link->ctx->dc->debug.force_dsc_edp_policy; + if (max_link_rate == LINK_RATE_UNKNOWN) + max_link_rate = link->verified_link_cap.link_rate; + /* + * 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)) { + /* for DSC enabled case, we search for minimum lane count */ + memset(&initial_link_setting, 0, sizeof(initial_link_setting)); + initial_link_setting.lane_count = LANE_COUNT_ONE; + initial_link_setting.link_rate = LINK_RATE_LOW; + initial_link_setting.link_spread = LINK_SPREAD_DISABLED; + initial_link_setting.use_link_rate_set = false; + initial_link_setting.link_rate_set = 0; + current_link_setting = initial_link_setting; + if (req_bw > dc_link_bandwidth_kbps(link, &link->verified_link_cap)) + return false; + + /* search for the minimum link setting that: + * 1. is supported according to the link training result + * 2. could support the b/w requested by the timing + */ + while (current_link_setting.link_rate <= + max_link_rate) { + link_bw = dc_link_bandwidth_kbps( + link, + ¤t_link_setting); + if (req_bw <= link_bw) { + *link_setting = current_link_setting; + return true; + } + if (policy) { + /* minimize lane */ + if (current_link_setting.link_rate < max_link_rate) { + current_link_setting.link_rate = + increase_link_rate( + current_link_setting.link_rate); + } else { + if (current_link_setting.lane_count < + link->verified_link_cap.lane_count) { + current_link_setting.lane_count = + increase_lane_count( + current_link_setting.lane_count); + current_link_setting.link_rate = initial_link_setting.link_rate; + } else + break; + } + } else { + /* minimize link rate */ + if (current_link_setting.lane_count < + link->verified_link_cap.lane_count) { + current_link_setting.lane_count = + increase_lane_count( + current_link_setting.lane_count); + } else { + current_link_setting.link_rate = + increase_link_rate( + current_link_setting.link_rate); + current_link_setting.lane_count = + initial_link_setting.lane_count; + } + } + } + return false; + } + + /* if optimize edp link is supported */ + memset(&initial_link_setting, 0, sizeof(initial_link_setting)); + initial_link_setting.lane_count = LANE_COUNT_ONE; + initial_link_setting.link_rate = link->dpcd_caps.edp_supported_link_rates[0]; + initial_link_setting.link_spread = LINK_SPREAD_DISABLED; + initial_link_setting.use_link_rate_set = true; + initial_link_setting.link_rate_set = 0; + current_link_setting = initial_link_setting; + + /* search for the minimum link setting that: + * 1. is supported according to the link training result + * 2. could support the b/w requested by the timing + */ + while (current_link_setting.link_rate <= + max_link_rate) { + link_bw = dc_link_bandwidth_kbps( + link, + ¤t_link_setting); + if (req_bw <= link_bw) { + *link_setting = current_link_setting; + return true; + } + if (policy) { + /* minimize lane */ + if (current_link_setting.link_rate_set < + link->dpcd_caps.edp_supported_link_rates_count + && current_link_setting.link_rate < max_link_rate) { + current_link_setting.link_rate_set++; + current_link_setting.link_rate = + link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set]; + } else { + if (current_link_setting.lane_count < link->verified_link_cap.lane_count) { + current_link_setting.lane_count = + increase_lane_count( + current_link_setting.lane_count); + current_link_setting.link_rate_set = initial_link_setting.link_rate_set; + current_link_setting.link_rate = + link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set]; + } else + break; + } + } else { + /* minimize link rate */ + if (current_link_setting.lane_count < + link->verified_link_cap.lane_count) { + current_link_setting.lane_count = + increase_lane_count( + current_link_setting.lane_count); + } else { + if (current_link_setting.link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) { + current_link_setting.link_rate_set++; + current_link_setting.link_rate = + link->dpcd_caps.edp_supported_link_rates[current_link_setting.link_rate_set]; + current_link_setting.lane_count = + initial_link_setting.lane_count; + } else + break; + } + } + } + return false; +} + static bool decide_mst_link_settings(const struct dc_link *link, struct dc_link_settings *link_setting) { *link_setting = link->verified_link_cap; @@ -3380,7 +3785,25 @@ void decide_link_settings(struct dc_stream_state *stream, if (decide_mst_link_settings(link, link_setting)) return; } else if (link->connector_signal == SIGNAL_TYPE_EDP) { - if (decide_edp_link_settings(link, link_setting, req_bw)) + /* enable edp link optimization for DSC eDP case */ + if (stream->timing.flags.DSC) { + enum dc_link_rate max_link_rate = LINK_RATE_UNKNOWN; + + if (link->ctx->dc->debug.force_dsc_edp_policy) { + /* calculate link max link rate cap*/ + struct dc_link_settings tmp_link_setting; + struct dc_crtc_timing tmp_timing = stream->timing; + uint32_t orig_req_bw; + + tmp_link_setting.link_rate = LINK_RATE_UNKNOWN; + tmp_timing.flags.DSC = 0; + orig_req_bw = dc_bandwidth_in_kbps_from_timing(&tmp_timing); + decide_edp_link_settings(link, &tmp_link_setting, orig_req_bw); + max_link_rate = tmp_link_setting.link_rate; + } + if (decide_edp_link_settings_with_dsc(link, link_setting, req_bw, max_link_rate)) + return; + } else if (decide_edp_link_settings(link, link_setting, req_bw)) return; } else if (decide_dp_link_settings(link, link_setting, req_bw)) return; @@ -3421,7 +3844,6 @@ static bool handle_hpd_irq_psr_sink(struct dc_link *link) &psr_configuration.raw, sizeof(psr_configuration.raw)); - if (psr_configuration.bits.ENABLE) { unsigned char dpcdbuf[3] = {0}; union psr_error_status psr_error_status; @@ -3453,10 +3875,12 @@ static bool handle_hpd_irq_psr_sink(struct dc_link *link) sizeof(psr_error_status.raw)); /* PSR error, disable and re-enable PSR */ - allow_active = false; - dc_link_set_psr_allow_active(link, &allow_active, true, false, NULL); - allow_active = true; - dc_link_set_psr_allow_active(link, &allow_active, true, false, NULL); + if (link->psr_settings.psr_allow_active) { + allow_active = false; + dc_link_set_psr_allow_active(link, &allow_active, true, false, NULL); + allow_active = true; + dc_link_set_psr_allow_active(link, &allow_active, true, false, NULL); + } return true; } else if (psr_sink_psr_status.bits.SINK_SELF_REFRESH_STATUS == @@ -3534,6 +3958,13 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link) &dpcd_lane_adjustment[0].raw, sizeof(dpcd_lane_adjustment)); + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + link->lttpr_mode == LTTPR_MODE_TRANSPARENT) + vendor_specific_lttpr_wa_three_dpcd( + link, + link_training_settings.dpcd_lane_settings); + /*get post cursor 2 parameters * For DP 1.1a or eariler, this DPCD register's value is 0 * For DP 1.2 or later: @@ -4153,6 +4584,56 @@ static int translate_dpcd_max_bpc(enum dpcd_downstream_port_max_bpc bpc) return -1; } +#if defined(CONFIG_DRM_AMD_DC_DCN) +uint32_t dc_link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw) +{ + switch (bw) { + case 0b001: + return 9000000; + case 0b010: + return 18000000; + case 0b011: + return 24000000; + case 0b100: + return 32000000; + case 0b101: + return 40000000; + case 0b110: + return 48000000; + } + + return 0; +} + +/** + * Return PCON's post FRL link training supported BW if its non-zero, otherwise return max_supported_frl_bw. + */ +static uint32_t intersect_frl_link_bw_support( + const uint32_t max_supported_frl_bw_in_kbps, + const union hdmi_encoded_link_bw hdmi_encoded_link_bw) +{ + uint32_t supported_bw_in_kbps = max_supported_frl_bw_in_kbps; + + // HDMI_ENCODED_LINK_BW bits are only valid if HDMI Link Configuration bit is 1 (FRL mode) + if (hdmi_encoded_link_bw.bits.FRL_MODE) { + if (hdmi_encoded_link_bw.bits.BW_48Gbps) + supported_bw_in_kbps = 48000000; + else if (hdmi_encoded_link_bw.bits.BW_40Gbps) + supported_bw_in_kbps = 40000000; + else if (hdmi_encoded_link_bw.bits.BW_32Gbps) + supported_bw_in_kbps = 32000000; + else if (hdmi_encoded_link_bw.bits.BW_24Gbps) + supported_bw_in_kbps = 24000000; + else if (hdmi_encoded_link_bw.bits.BW_18Gbps) + supported_bw_in_kbps = 18000000; + else if (hdmi_encoded_link_bw.bits.BW_9Gbps) + supported_bw_in_kbps = 9000000; + } + + return supported_bw_in_kbps; +} +#endif + static void read_dp_device_vendor_id(struct dc_link *link) { struct dp_device_vendor_id dp_id; @@ -4264,6 +4745,27 @@ static void get_active_converter_info( translate_dpcd_max_bpc( hdmi_color_caps.bits.MAX_BITS_PER_COLOR_COMPONENT); +#if defined(CONFIG_DRM_AMD_DC_DCN) + if (link->dc->caps.hdmi_frl_pcon_support) { + union hdmi_encoded_link_bw hdmi_encoded_link_bw; + + link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps = + dc_link_bw_kbps_from_raw_frl_link_rate_data( + hdmi_color_caps.bits.MAX_ENCODED_LINK_BW_SUPPORT); + + // Intersect reported max link bw support with the supported link rate post FRL link training + if (core_link_read_dpcd(link, DP_PCON_HDMI_POST_FRL_STATUS, + &hdmi_encoded_link_bw.raw, sizeof(hdmi_encoded_link_bw)) == DC_OK) { + link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps = intersect_frl_link_bw_support( + link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps, + hdmi_encoded_link_bw); + } + + if (link->dpcd_caps.dongle_caps.dp_hdmi_frl_max_link_bw_in_kbps > 0) + link->dpcd_caps.dongle_caps.extendedCapValid = true; + } +#endif + if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk_in_khz != 0) link->dpcd_caps.dongle_caps.extendedCapValid = true; } @@ -4454,7 +4956,7 @@ bool dp_retrieve_lttpr_cap(struct dc_link *link) lttpr_dpcd_data, sizeof(lttpr_dpcd_data)); if (status != DC_OK) { - dm_error("%s: Read LTTPR caps data failed.\n", __func__); + DC_LOG_DP2("%s: Read LTTPR caps data failed.\n", __func__); return false; } @@ -5240,8 +5742,18 @@ bool dc_link_dp_set_test_pattern( if (is_dp_phy_pattern(test_pattern)) { /* Set DPCD Lane Settings before running test pattern */ if (p_link_settings != NULL) { - dp_set_hw_lane_settings(link, p_link_settings, DPRX); - dpcd_set_lane_settings(link, p_link_settings, DPRX); + if (link->dc->debug.apply_vendor_specific_lttpr_wa && + (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) && + link->lttpr_mode == LTTPR_MODE_TRANSPARENT) { + dpcd_set_lane_settings(link, p_link_settings, DPRX); + vendor_specific_lttpr_wa_five( + link, + p_link_settings->dpcd_lane_settings, + p_link_settings->link_settings.lane_count); + } else { + dp_set_hw_lane_settings(link, p_link_settings, DPRX); + dpcd_set_lane_settings(link, p_link_settings, DPRX); + } } /* Blank stream if running test pattern */ @@ -5665,6 +6177,23 @@ void dp_set_fec_enable(struct dc_link *link, bool enable) } } +struct link_encoder *dp_get_link_enc(struct dc_link *link) +{ + struct link_encoder *link_enc; + + link_enc = link->link_enc; + 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->ctx->dc, + link); + if (!link->link_enc) + link_enc = link_enc_cfg_get_next_avail_link_enc( + link->ctx->dc); + } + + return link_enc; +} + void dpcd_set_source_specific_data(struct dc_link *link) { if (!link->dc->vendor_signature.is_valid) { @@ -5885,7 +6414,10 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin req_bw = dc_bandwidth_in_kbps_from_timing(crtc_timing); - decide_edp_link_settings(link, &link_setting, req_bw); + if (!crtc_timing->flags.DSC) + decide_edp_link_settings(link, &link_setting, req_bw); + else + decide_edp_link_settings_with_dsc(link, &link_setting, req_bw, LINK_RATE_UNKNOWN); if (link->dpcd_caps.edp_supported_link_rates[link_rate_set] != link_setting.link_rate || lane_count_set.bits.LANE_COUNT_SET != link_setting.lane_count) { @@ -6126,3 +6658,14 @@ bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx) dc_is_dp_signal(pipe_ctx->stream->signal)); } #endif + +void edp_panel_backlight_power_on(struct dc_link *link) +{ + if (link->connector_signal != SIGNAL_TYPE_EDP) + return; + + link->dc->hwss.edp_power_control(link, true); + link->dc->hwss.edp_wait_for_hpd_ready(link, true); + if (link->dc->hwss.edp_backlight_control) + link->dc->hwss.edp_backlight_control(link, true); +} |