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drm: Add drm_crtc_vblank_waitqueue()

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Add a small static inline helper to grab the vblank wait queue based on
the drm_crtc.

This is useful for drivers to do internal vblank waits using
wait_event() & co.

v2: Pimp commit message (Daniel)
    Add kernel doc (Daniel)

Suggested-by: Daniel Vetter <[email protected]>
Signed-off-by: Ville Syrjälä <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
This commit is contained in:
Ville Syrjälä 2014-05-22 19:36:03 +03:00 • committed by Daniel Vetter
commit 020178a1bc
2 changed files with 12 additions and 0 deletions
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1
Documentation/DocBook/drm.tmpl
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@ -3400,6 +3400,7 @@ void (*disable_vblank) (struct drm_device *dev, int crtc);</synopsis>
<sect2>
<title>Vertical Blanking and Interrupt Handling Functions Reference</title>
!Edrivers/gpu/drm/drm_irq.c
!Iinclude/drm/drmP.h drm_crtc_vblank_waitqueue
</sect2>
</sect1>