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drm/amd/display: Add debugfs entry to force YUV420 output

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[Why]
Even if YUV420 is available for video mode, YUV444 is still
automatically selected. This poses a problem for compliance tests.

[How]
Add a per-connector debugfs entry "force_yuv420_output" to force
selection of YUV420 mode.

Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Stylon Wang
2019-08-20 14:48:37 -04:00
committed by Alex Deucher
parent 7470123829
commit d4252eee1f
3 changed files with 36 additions and 1 deletions
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1
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
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@@ -287,6 +287,7 @@ struct amdgpu_dm_connector {
uint32_t debugfs_dpcd_address;
uint32_t debugfs_dpcd_size;
#endif
bool force_yuv420_output;
};
#define to_amdgpu_dm_connector(x) container_of(x, struct amdgpu_dm_connector, base)