diff options
| author | Dave Airlie <airlied@redhat.com> | 2021-04-30 10:28:34 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2021-04-30 10:28:35 +1000 |
| commit | add74e32db0443dfd940d7c3256b9609c65e6149 (patch) | |
| tree | 1a04fb2834c0599e54493ad98221865c83a91621 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | |
| parent | 9b2788dbcef756a77659fa22e6a73bec4a57d126 (diff) | |
| parent | 7845d80dda1fd998a34bb1a15ff9aba260a58f32 (diff) | |
Merge tag 'amd-drm-next-5.13-2021-04-23' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-next-5.13-2021-04-23:
amdgpu:
- Fixes for Aldebaran
- Display LTTPR fixes
- eDP fixes
- Fixes for Vangogh
- RAS fixes
- ASPM support
- Renoir SMU fixes
- Modifier fixes
- Misc code cleanups
- Freesync fixes
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210423223920.3786-1-alexander.deucher@amd.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 | 25 |
1 files changed, 25 insertions, 0 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 103e29905b57..e8b325a828c1 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 @@ -711,3 +711,28 @@ bool dm_helpers_dmub_outbox0_interrupt_control(struct dc_context *ctx, bool enab enable ? "en" : "dis", ret); return ret; } + +void dm_helpers_mst_enable_stream_features(const struct dc_stream_state *stream) +{ + /* TODO: virtual DPCD */ + struct dc_link *link = stream->link; + union down_spread_ctrl old_downspread; + union down_spread_ctrl new_downspread; + + if (link->aux_access_disabled) + return; + + if (!dm_helpers_dp_read_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL, + &old_downspread.raw, + sizeof(old_downspread))) + return; + + new_downspread.raw = old_downspread.raw; + new_downspread.bits.IGNORE_MSA_TIMING_PARAM = + (stream->ignore_msa_timing_param) ? 1 : 0; + + if (new_downspread.raw != old_downspread.raw) + dm_helpers_dp_write_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL, + &new_downspread.raw, + sizeof(new_downspread)); +} |