drm/amd/display: Test GFX6-8 tile mode and tile split lookups

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[WHAT]
Add KUnit tests for amdgpu_dm_plane_get_gfx6_tile_idx(),
amdgpu_dm_plane_calc_gfx7_tile_split() and
amdgpu_dm_plane_get_gfx7_macro_tile_idx() covering the per-family tile
mode index selection, the tile split derived from the sample split
factor with its 256 byte and memory row size clamps, and the macro tile
index capped by the tile split.

Assisted-by: Copilot:Claude-Opus-5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Alex Hung 2026-08-11 17:09:47 -06:00 • committed by Alex Deucher

parent e02ef5a326

commit b63f10dc51

3 changed files with 97 additions and 7 deletions

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18

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

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5

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

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81

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

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