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drm: Add drm_atomic_get_old/new_private_obj_state

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This pair of functions return the old/new private object state for the
given private_obj, or NULL if the private_obj is not part of the global
atomic state.

Reviewed-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
james qian wang (Arm Technology China) 2019-01-22 11:05:41 +00:00 • committed by Liviu Dudau
commit 9801a7eadf
2 changed files with 50 additions and 1 deletions
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6
include/drm/drm_atomic.h
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@ -452,6 +452,12 @@ void drm_atomic_private_obj_fini(struct drm_private_obj *obj);
struct drm_private_state * __must_check
drm_atomic_get_private_obj_state(struct drm_atomic_state *state,
struct drm_private_obj *obj);
struct drm_private_state *
drm_atomic_get_old_private_obj_state(struct drm_atomic_state *state,
struct drm_private_obj *obj);
struct drm_private_state *
drm_atomic_get_new_private_obj_state(struct drm_atomic_state *state,
struct drm_private_obj *obj);
/**
* drm_atomic_get_existing_crtc_state - get crtc state, if it exists