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Commit 2068afe6 authored by Nikola Cornij's avatar Nikola Cornij Committed by Alex Deucher
Browse files

drm/amd/display: Add hook for MST root branch info 



This allows DM to do any necessary updates before MST discovery starts.

Signed-off-by: default avatarNikola Cornij <nikola.cornij@amd.com>
Reviewed-by: default avatarNikola Cornij <Nikola.Cornij@amd.com>
Acked-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent bf53769d

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

+5 −0
Original line number Diff line number Diff line
@@ -169,6 +169,11 @@ static void get_payload_table( 
	mutex_unlock(&mst_mgr->payload_lock);

}



void dm_helpers_dp_update_branch_info(

	struct dc_context *ctx,

	const struct dc_link *link)

{}



/*

 * Writes payload allocation table in immediate downstream device.

 */

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

+4 −0
Original line number Diff line number Diff line
@@ -529,6 +529,10 @@ static bool detect_dp( 
			if (reason == DETECT_REASON_BOOT)

				boot = true;



			dm_helpers_dp_update_branch_info(

				link->ctx,

				link);



			if (!dm_helpers_dp_mst_start_top_mgr(

				link->ctx,

				link, boot)) {

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

+8 −0
Original line number Diff line number Diff line
@@ -40,6 +40,14 @@ enum dc_edid_status dm_helpers_parse_edid_caps( 
	const struct dc_edid *edid,

	struct dc_edid_caps *edid_caps);





/*

 * Update DP branch info

 */

void dm_helpers_dp_update_branch_info(

		struct dc_context *ctx,

		const struct dc_link *link);



/*

 * Writes payload allocation table in immediate downstream device.

 */