drm/amd/display: Only use offset for first ODM pipe

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[WHY]
Only the first pipe in ODM combine group should have nonzero recout
offset. All other pipes should have recout offset 0;
otherwise there will be gaps in the image.

[HOW]
Set recout.x to 0 if the pipe is not the leftmost ODM pipe.

When computing viewports, calculate the horizontal offset of a pipe's src
based on the current pipe's position in the ODM group, plus whatever offset the
leftmost ODM pipe has; otherwise there will be discontinuity in the image.

Since ODM combine can only combine pipes horizontally, nothing needs to
be done for recout.y.

Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Wesley Chalmers 2020-08-25 10:57:24 -04:00 • committed by Alex Deucher

parent 3fb068c3ec

commit 05e3d830fa

1 changed files with 19 additions and 10 deletions

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drivers/gpu/drm/amd/display/dc/core/dc_resource.c

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