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drm/amd/display: Fix Synaptics Cascaded Panamera DSC Determination

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commit 4437936c6b696b98f3fe1d8679a2788c41b4df77 upstream.

Synaptics Cascaded Panamera topology needs to unconditionally
acquire root aux for dsc decoding.

Reviewed-by: Roman Li <roman.li@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Mario Limonciello <superm1@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fangzhi Zuo 2024-08-12 12:13:44 -04:00 committed by Greg Kroah-Hartman
parent e0dbda9f26
commit 50460579fe
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
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@ -201,7 +201,7 @@ static bool validate_dsc_caps_on_connector(struct amdgpu_dm_connector *aconnecto
aconnector->dsc_aux = &aconnector->mst_port->dm_dp_aux.aux;
/* synaptics cascaded MST hub case */
if (!aconnector->dsc_aux && is_synaptics_cascaded_panamera(aconnector->dc_link, port))
if (is_synaptics_cascaded_panamera(aconnector->dc_link, port))
aconnector->dsc_aux = port->mgr->aux;
if (!aconnector->dsc_aux)