drm/amd/display: fix flickering caused by S/G mode

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Currently, on a handful of ASICs. We allow the framebuffer for a given
plane to exist in either VRAM or GTT. However, if the plane's new
framebuffer is in a different memory domain than it's previous
framebuffer, flipping between them can cause the screen to flicker. So,
to fix this, don't perform an immediate flip in the aforementioned case.

Cc: stable@vger.kernel.org
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2354
Reviewed-by: Roman Li <Roman.Li@amd.com>
Fixes: 81d0bcf990 ("drm/amdgpu: make display pinning more flexible (v2)")
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Hamza Mahfooz 2023-04-14 14:26:27 -04:00 • committed by Alex Deucher

parent 0026c273e6

commit 8f7f1b020e

1 changed files with 11 additions and 2 deletions

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

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