drm/amd/display: Support DRM format modifiers on GFX6-8

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Expose displayable DRM format modifiers based on which
tiling modes are supported by the GFX block.

Technically, DCE (Display Controller Engine) could
support all possible permutations of all parameters
independently of what GFX supports, with the limitation
that it can only display LINEAR images and the
displayable micro tiling mode (MICROTILE == DISPLAY).
It doesn't make sense to expose all possible permutations
of macro tiling modes, so let's just expose what the GFX
block of the current chip supports.

The following modes will be advertised:
- 2D_TILED_THIN1 + DISPLAY + macrotile params [1]
- 1D_TILED_THIN1 + DISPLAY
- LINEAR

[1] The macro tiling parameters depend on how many
bits per pixel of the specific surface has and
how the chip is configured. There is only one set
of valid macrotile params for a given surface.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Tested-by: Link Mauve <linkmauve@linkmauve.fr>
Tested-by: Nikola Medić <nmedic89@gmail.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Timur Kristóf 2026-07-22 18:59:24 +02:00 • committed by Alex Deucher

parent 24c097b112

commit 3104069690

3 changed files with 319 additions and 13 deletions

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322

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c

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4

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.h

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6

drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c

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