From 34f667634a0dcee26d9873ab1c819bdd6cdf485a Mon Sep 17 00:00:00 2001 From: Hamza Mahfooz Date: Thu, 4 Aug 2022 14:06:55 -0400 Subject: drm/dp_mst: add passthrough_aux to struct drm_dp_mst_port Currently, there is no way to identify if DSC pass-through can be enabled and what aux DSC pass-through requests ought to be sent to. So, add a variable to struct drm_dp_mst_port that keeps track of the aforementioned information. Reviewed-by: Lyude Paul Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/display') diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 57e65423e50d..3ffa0e893617 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -5908,8 +5908,10 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port) /* Enpoint decompression with DP-to-DP peer device */ if ((endpoint_dsc & DP_DSC_DECOMPRESSION_IS_SUPPORTED) && (endpoint_fec & DP_FEC_CAPABLE) && - (upstream_dsc & 0x2) /* DSC passthrough */) + (upstream_dsc & DP_DSC_PASSTHROUGH_IS_SUPPORTED)) { + port->passthrough_aux = &immediate_upstream_port->aux; return &port->aux; + } /* Virtual DPCD decompression with DP-to-DP peer device */ return &immediate_upstream_port->aux; -- cgit v1.2.3