drm/amd/display: Default max bpc to 16 for eDP

[Why]
Some 10bit eDP panels don't lightup after we cap bpc to 8.

[How]
Set default max_bpc to 16 for edp connector type.

Signed-off-by: Roman Li <roman.li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index f2db400..ff83f0e 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5561,9 +5561,9 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
 
        drm_connector_attach_max_bpc_property(&aconnector->base, 8, 16);
 
-       /* This defaults to the max in the range, but we want 8bpc. */
-       aconnector->base.state->max_bpc = 8;
-       aconnector->base.state->max_requested_bpc = 8;
+       /* This defaults to the max in the range, but we want 8bpc for non-edp. */
+       aconnector->base.state->max_bpc = (connector_type == DRM_MODE_CONNECTOR_eDP) ? 16 : 8;
+       aconnector->base.state->max_requested_bpc = aconnector->base.state->max_bpc;
 
        if (connector_type == DRM_MODE_CONNECTOR_eDP &&
            dc_is_dmcu_initialized(adev->dm.dc)) {