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drm: export atomic wait_for_vblanks helper (v2) 

v1: original
v2: danvet's kerneldoc nitpicks

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Rob Clark 2014-11-11 19:38:59 -05:00 committed by Dave Airlie
parent 51b44eb17b
commit 5ee3229c87
2 changed files with 17 additions and 3 deletions
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17
drivers/gpu/drm/drm_atomic_helper.c
View File

@ -754,8 +754,18 @@ static void wait_for_fences(struct drm_device *dev,
}
}
static void
wait_for_vblanks(struct drm_device *dev, struct drm_atomic_state *old_state)
/**
* drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs
* @dev: DRM device
* @old_state: atomic state object with old state structures
*
* Helper to, after atomic commit, wait for vblanks on all effected
* crtcs (ie. before cleaning up old framebuffers using
* drm_atomic_helper_cleanup_planes())
*/
void
drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state;
@ -800,6 +810,7 @@ wait_for_vblanks(struct drm_device *dev, struct drm_atomic_state *old_state)
drm_crtc_vblank_put(crtc);
}
}
EXPORT_SYMBOL(drm_atomic_helper_wait_for_vblanks);
/**
* drm_atomic_helper_commit - commit validated state object
@ -859,7 +870,7 @@ int drm_atomic_helper_commit(struct drm_device *dev,
drm_atomic_helper_commit_post_planes(dev, state);
wait_for_vblanks(dev, state);
drm_atomic_helper_wait_for_vblanks(dev, state);
drm_atomic_helper_cleanup_planes(dev, state);

3
include/drm/drm_atomic_helper.h
View File

@ -34,6 +34,9 @@ int drm_atomic_helper_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool async);
void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
struct drm_atomic_state *old_state);
void drm_atomic_helper_commit_pre_planes(struct drm_device *dev,
struct drm_atomic_state *state);
void drm_atomic_helper_commit_post_planes(struct drm_device *dev,