drm/msm: add kms->flush_commit()

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Add ->flush_commit(crtc_mask).  Currently a no-op, but kms backends
should migrate writing flush registers to this hook, so we can decouple
pushing updates to hardware, and flushing the updates.

Once we add async commit support, the hw updates will be pushed down to
the hw synchronously, but flushing the updates will be deferred until as
close to vblank as possible, so that multiple updates can be combined in
a single frame.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Sean Paul <sean@poorly.run>

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This commit is contained in:

Rob Clark 2019-08-29 09:45:14 -07:00

parent 80b4b4a703

commit 9f6b65642b

5 changed files with 63 additions and 4 deletions

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6

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

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6

drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c

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6

drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c

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9

drivers/gpu/drm/msm/msm_atomic.c

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40

drivers/gpu/drm/msm/msm_kms.h

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