drm/atomic-helper: Implement drm_atomic_helper_duplicate_state()

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This function can be used to duplicate an atomic state object. This is
useful for example to implement suspend/resume, where the state before
suspend can be saved and restored upon resume.

v2: move locking to caller, be more explicit about prerequisites
v3: explicitly pass lock acquisition context, improve kerneldoc

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Thierry Reding 2015-09-08 15:00:45 +02:00 • committed by Daniel Vetter

parent 6e48ae3269

commit 397fd77c04

2 changed files with 81 additions and 0 deletions

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include/drm/drm_atomic_helper.h

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