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| author |   David Francis <David.Francis@amd.com> | 2019-06-06 11:20:10 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-01-09 18:07:46 -0500 |
| commit | a3c2b0ffc007e5d98f5313ed951fff092535fb6d (patch) | |
| tree | e6c14ad092c1152e57e70218074aab311db455ad /include/drm | |
| parent | drm/dp_mst: Add PBN calculation for DSC modes (diff) | |
| download | wireguard-linux-a3c2b0ffc007e5d98f5313ed951fff092535fb6d.tar.xz wireguard-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')
| -rw-r--r-- | include/drm/drm_dp_mst_helper.h | 3 |
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; }; |