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authorDavid Francis <David.Francis@amd.com>2019-06-06 17:20:10 +0200
committerAlex Deucher <alexander.deucher@amd.com>2020-01-10 00:07:46 +0100
commita3c2b0ffc007e5d98f5313ed951fff092535fb6d (patch)
treee6c14ad092c1152e57e70218074aab311db455ad /include/drm/drm_dp_mst_helper.h
parentdrm/dp_mst: Add PBN calculation for DSC modes (diff)
downloadlinux-a3c2b0ffc007e5d98f5313ed951fff092535fb6d.tar.xz
linux-a3c2b0ffc007e5d98f5313ed951fff092535fb6d.zip
drm/dp_mst: Parse FEC capability on MST ports
As of DP1.4, ENUM_PATH_RESOURCES returns a bit indicating if FEC can be supported up to that point in the MST network. The bit is the first byte of the ENUM_PATH_RESOURCES ack reply, bottom-most bit (refer to section 2.11.9.4 of DP standard, v1.4) That value is needed for FEC and DSC support Store it on drm_dp_mst_port Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: David Francis <David.Francis@amd.com> Signed-off-by: Mikita Lipski <mikita.lipski@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/drm/drm_dp_mst_helper.h')
-rw-r--r--include/drm/drm_dp_mst_helper.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index 0c59c9a348bd..f4b8bc027553 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -156,6 +156,8 @@ struct drm_dp_mst_port {
* audio-capable.
*/
bool has_audio;
+
+ bool fec_capable;
};
/**
@@ -383,6 +385,7 @@ struct drm_dp_port_number_req {
struct drm_dp_enum_path_resources_ack_reply {
u8 port_number;
+ bool fec_capable;
u16 full_payload_bw_number;
u16 avail_payload_bw_number;
};