diff options
author | Dave Airlie <airlied@redhat.com> | 2018-06-22 13:18:32 +1000 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2018-06-22 13:19:05 +1000 |
commit | 565c17b5f02dacd8430da8d95bbba60587f339af (patch) | |
tree | 63dc8a786f522f11e44058ec9707af12fb3d83c4 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | |
parent | f4366e44efeb895c358fddd11f9ecee81bdad06b (diff) | |
parent | a21daa88d4f08c959a36ad9760df045407a080e5 (diff) |
Merge branch 'drm-next-4.19' of git://people.freedesktop.org/~agd5f/linux into drm-next
First feature request for 4.19. Highlights:
- Add initial amdgpu documentation
- Add initial GPU scheduler documention
- GPU scheduler fixes for dying processes
- Add support for the JPEG engine on VCN
- Switch CI to use powerplay by default
- EDC support for CZ
- More powerplay cleanups
- Misc DC fixes
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180621161138.3008-1-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 | 28 |
1 files changed, 28 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 ec304b1a5973..b19dc4cfc030 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 @@ -497,6 +497,34 @@ enum dc_edid_status dm_helpers_read_local_edid( DRM_ERROR("EDID err: %d, on connector: %s", edid_status, aconnector->base.name); + if (link->aux_mode) { + union test_request test_request = {0}; + union test_response test_response = {0}; + + dm_helpers_dp_read_dpcd(ctx, + link, + DP_TEST_REQUEST, + &test_request.raw, + sizeof(union test_request)); + + if (!test_request.bits.EDID_READ) + return edid_status; + + test_response.bits.EDID_CHECKSUM_WRITE = 1; + + dm_helpers_dp_write_dpcd(ctx, + link, + DP_TEST_EDID_CHECKSUM, + &sink->dc_edid.raw_edid[sink->dc_edid.length-1], + 1); + + dm_helpers_dp_write_dpcd(ctx, + link, + DP_TEST_RESPONSE, + &test_response.raw, + sizeof(test_response)); + + } return edid_status; } |