drm/nouveau/gsp/r570: Add comp mode workaround from issue #3172217

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One of the things that OpenRM does right before initiating fbsr is apply a
special workaround (nvidia issue #3172217) which temporarily disables raw
compression mode on the GPU. It is later re-enabled after resuming with
fbsr completes.

Since we don't currently save the compbit backing with fbsr, this shouldn't
currently make any functional difference in the suspend/resume process. But
it will be required for implementing support for saving and restoring
compbit backings from the GPU.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/20260917185916.1089621-4-lyude@redhat.com

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Lyude Paul 2026-09-17 14:54:27 -04:00

parent 3217000f0b

commit c7ef611a43

2 changed files with 54 additions and 0 deletions

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48

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r570/fbsr.c

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6

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r570/nvrm/fbsr.h

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