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Commit aafded88 authored by Tony Cheng's avatar Tony Cheng Committed by Alex Deucher
Browse files

drm/amd/display: allow diags to skip initial link training 



[why]
diag specify what the full config and is only concerned about pass/fail at the end

having inter-op code like verifiying we can actually train at reported link rate
slows down diag test and add complexity we don't need

[how]
add dc_debug option to skip capability link trianing

also  remove hbr in function name as verify is not specific to hbr

Signed-off-by: default avatarTony Cheng <tony.cheng@amd.com>
Reviewed-by: default avatarKen Chalmers <ken.chalmers@amd.com>
Acked-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 85344e75

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -760,7 +760,7 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason) 
				 */

				 */





				/* deal with non-mst cases */

				/* deal with non-mst cases */

				dp_hbr_verify_link_cap(link, &link->reported_link_cap);

				dp_verify_link_cap(link, &link->reported_link_cap);

			}

			}





			/* HDMI-DVI Dongle */

			/* HDMI-DVI Dongle */

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

+6 −1
Original line number Original line Diff line number Diff line
@@ -1086,7 +1086,7 @@ static struct dc_link_settings get_max_link_cap(struct dc_link *link) 
	return max_link_cap;

	return max_link_cap;

}

}





bool dp_hbr_verify_link_cap(

bool dp_verify_link_cap(

	struct dc_link *link,

	struct dc_link *link,

	struct dc_link_settings *known_limit_link_setting)

	struct dc_link_settings *known_limit_link_setting)

{

{
@@ -1101,6 +1101,11 @@ bool dp_hbr_verify_link_cap( 
	enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_EXTERNAL;

	enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_EXTERNAL;

	enum link_training_result status;

	enum link_training_result status;





	if (link->dc->debug.skip_detection_link_training) {

		link->verified_link_cap = *known_limit_link_setting;

		return true;

	}



	success = false;

	success = false;

	skip_link_training = false;

	skip_link_training = false;

drivers/gpu/drm/amd/display/dc/dc.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -258,6 +258,7 @@ struct dc_debug { 
	bool avoid_vbios_exec_table;

	bool avoid_vbios_exec_table;

	bool scl_reset_length10;

	bool scl_reset_length10;

	bool hdmi20_disable;

	bool hdmi20_disable;

	bool skip_detection_link_training;





	struct {

	struct {

		uint32_t ltFailCount;

		uint32_t ltFailCount;

drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h

+1 −1
Original line number Original line Diff line number Diff line
@@ -33,7 +33,7 @@ struct dc_link; 
struct dc_stream_state;

struct dc_stream_state;

struct dc_link_settings;

struct dc_link_settings;





bool dp_hbr_verify_link_cap(

bool dp_verify_link_cap(

	struct dc_link *link,

	struct dc_link *link,

	struct dc_link_settings *known_limit_link_setting);

	struct dc_link_settings *known_limit_link_setting);