Commit f9c8742c authored by David Francis's avatar David Francis Committed by Alex Deucher
Browse files

drm/amd/display: Write DSC enable to MST DPCD 



Rework the dm_helpers_write_dsc_enable callback to
handle the MST case.

Use the cached dsc_aux field.

Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Signed-off-by: default avatarDavid Francis <David.Francis@amd.com>
Signed-off-by: default avatarMikita Lipski <mikita.lipski@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent ec0ca697

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

+18 −1
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include "dc.h"

#include "amdgpu_dm.h"

#include "amdgpu_dm_irq.h"

#include "amdgpu_dm_mst_types.h"



#include "dm_helpers.h"
@@ -516,8 +517,24 @@ bool dm_helpers_dp_write_dsc_enable( 
)

{

	uint8_t enable_dsc = enable ? 1 : 0;

	struct amdgpu_dm_connector *aconnector;



	if (!stream)

		return false;



	return dm_helpers_dp_write_dpcd(ctx, stream->sink->link, DP_DSC_ENABLE, &enable_dsc, 1);

	if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {

		aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;



		if (!aconnector->dsc_aux)

			return false;



		return (drm_dp_dpcd_write(aconnector->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1) >= 0);

	}



	if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT)

		return dm_helpers_dp_write_dpcd(ctx, stream->link, DP_DSC_ENABLE, &enable_dsc, 1);



	return false;

}



bool dm_helpers_is_dp_sink_present(struct dc_link *link)

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