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drm/amd/display: Add link rate optimization logs for ILR 

[Why&How]
Add logs to verify ILR optimization behaviour on boot

Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michael Strauss 2021-04-06 12:20:51 -04:00 committed by Alex Deucher
parent 97d1765e67
commit 0eda55ca52
3 changed files with 12 additions and 2 deletions
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1
drivers/gpu/drm/amd/display/dc/core/dc.c
View File

@ -1434,6 +1434,7 @@ bool dc_validate_seamless_boot_timing(const struct dc *dc,
}
if (is_edp_ilr_optimization_required(link, crtc_timing)) {
DC_LOG_EVENT_LINK_TRAINING("Seamless boot disabled to optimize eDP link rate\n");
return false;
}

9
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
View File

@ -4739,8 +4739,10 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin
core_link_read_dpcd(link, DP_LINK_BW_SET,
&link_bw_set, sizeof(link_bw_set));
if (link_bw_set)
if (link_bw_set) {
DC_LOG_EVENT_LINK_TRAINING("eDP ILR: Optimization required, VBIOS used link_bw_set\n");
return true;
}
// Read DPCD 00115h to find the edp link rate set used
core_link_read_dpcd(link, DP_LINK_RATE_SET,
@ -4755,9 +4757,12 @@ bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timin
decide_edp_link_settings(link, &link_setting, req_bw);
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)
lane_count_set.bits.LANE_COUNT_SET != link_setting.lane_count) {
DC_LOG_EVENT_LINK_TRAINING("eDP ILR: Optimization required, VBIOS link_rate_set not optimal\n");
return true;
}
DC_LOG_EVENT_LINK_TRAINING("eDP ILR: No optimization required, VBIOS set optimal link_rate_set\n");
return false;
}

4
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
View File

@ -1695,6 +1695,8 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
bool can_apply_edp_fast_boot = false;
bool can_apply_seamless_boot = false;
bool keep_edp_vdd_on = false;
DC_LOGGER_INIT();
get_edp_links_with_sink(dc, edp_links_with_sink, &edp_with_sink_num);
get_edp_links(dc, edp_links, &edp_num);
@ -1717,6 +1719,8 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
edp_stream = edp_streams[0];
can_apply_edp_fast_boot = !is_edp_ilr_optimization_required(edp_stream->link, &edp_stream->timing);
edp_stream->apply_edp_fast_boot_optimization = can_apply_edp_fast_boot;
if (can_apply_edp_fast_boot)
DC_LOG_EVENT_LINK_TRAINING("eDP fast boot disabled to optimize link rate\n");
break;
}