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Commit ff582b61 authored by Anthony Koo's avatar Anthony Koo Committed by Alex Deucher
Browse files

drm/amd/display: add way to determine if link is active 



[Why]
Need to understand whether link is active aside from stream state.
This could be used to check what links are enabled by GOP.

[How]
Store link_active state in link status and initialize it by checking
if the DIG is enabled.
Keep it updated on every link enable and disable

Signed-off-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Reviewed-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a122b62d

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

+4 −0
Original line number Diff line number Diff line
@@ -2612,6 +2612,8 @@ void core_link_enable_stream( 
			}

		}



		stream->link->link_status.link_active = true;



		core_dc->hwss.enable_audio_stream(pipe_ctx);



		/* turn off otg test pattern if enable */
@@ -2646,6 +2648,8 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx, int option) 
	core_dc->hwss.disable_stream(pipe_ctx, option);



	disable_link(pipe_ctx->stream->link, pipe_ctx->stream->signal);



	pipe_ctx->stream->link->link_status.link_active = false;

}



void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable)

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

+1 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include "grph_object_defs.h"



struct dc_link_status {

	bool link_active;

	struct dpcd_caps *dpcd_caps;

};

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

+5 −0
Original line number Diff line number Diff line
@@ -1027,6 +1027,11 @@ static void dcn10_init_hw(struct dc *dc) 
				dc->hwss.edp_power_control(link, true);



			link->link_enc->funcs->hw_init(link->link_enc);



			/* Check for enabled DIG to identify enabled display */

			if (link->link_enc->funcs->is_dig_enabled &&

				link->link_enc->funcs->is_dig_enabled(link->link_enc))

				link->link_status.link_active = true;

		}

	}