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drm/amd/display: Add DC debug option to force LTTPR mode

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[WHY]
Useful for external teams debugging LTTPR issues

Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@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 2022-08-17 10:57:10 -04:00 committed by Alex Deucher
parent 36ad2ec980
commit 280f188489
2 changed files with 5 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
View File

@ -5032,6 +5032,10 @@ static void determine_lttpr_mode(struct dc_link *link)
bool vbios_lttpr_enable = link->dc->caps.vbios_lttpr_enable;
bool vbios_lttpr_interop = link->dc->caps.vbios_lttpr_aware;
if (link->ctx->dc->debug.lttpr_mode_override != 0) {
link->lttpr_mode = link->ctx->dc->debug.lttpr_mode_override;
return;
}
if ((link->dc->config.allow_lttpr_non_transparent_mode.bits.DP2_0 &&
link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED)) {

1
drivers/gpu/drm/amd/display/dc/dc.h
View File

@ -846,6 +846,7 @@ struct dc_debug_options {
bool exit_idle_opt_for_cursor_updates;
bool enable_single_display_2to1_odm_policy;
bool enable_dp_dig_pixel_rate_div_policy;
enum lttpr_mode lttpr_mode_override;
};
struct gpu_info_soc_bounding_box_v1_0;