diff options
| author | Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> | 2021-10-25 18:38:24 -0400 |
|---|---|---|
| committer | Lyude Paul <lyude@redhat.com> | 2021-10-25 21:21:09 -0400 |
| commit | 41724ea273cdda5261db4fabd6bfb1375fbc96b2 (patch) | |
| tree | f4f882918ee02a9973c270991073f770f210e441 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | |
| parent | d740e0bf8ed4c14ac6a616e2b31626bdcf417135 (diff) | |
drm/amd/display: Add DP 2.0 MST DM Support
[Why]
Add DP2 MST and debugfs support
[How]
Update the slot info based on the link encoding format
Reviewed-by: "Lin, Wayne" <Wayne.Lin@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025223825.301703-5-lyude@redhat.com
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 6169488e2011..53b5cc7b0679 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -219,6 +219,7 @@ bool dm_helpers_dp_mst_write_payload_allocation_table( struct drm_dp_mst_topology_mgr *mst_mgr; struct drm_dp_mst_port *mst_port; bool ret; + u8 link_coding_cap; aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; /* Accessing the connector state is required for vcpi_slots allocation @@ -238,6 +239,8 @@ bool dm_helpers_dp_mst_write_payload_allocation_table( mst_port = aconnector->port; + link_coding_cap = dc_link_dp_mst_decide_link_encoding_format(aconnector->dc_link); + if (enable) { ret = drm_dp_mst_allocate_vcpi(mst_mgr, mst_port, @@ -251,7 +254,7 @@ bool dm_helpers_dp_mst_write_payload_allocation_table( } /* It's OK for this to fail */ - drm_dp_update_payload_part1(mst_mgr, 1); + drm_dp_update_payload_part1(mst_mgr, (link_coding_cap == DP_CAP_ANSI_128B132B) ? 0:1); /* mst_mgr->->payloads are VC payload notify MST branch using DPCD or * AUX message. The sequence is slot 1-63 allocated sequence for each |