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drm: Extract&Document drm_irq.h

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The drm_irq docs want one function from drmP.h, but that one is a
serious mess. Extract it, and while at it improve the docs a bit.
There's a bit a header loop issue since core data structures like
drm_device and drm_driver aren't in their own headers yet, which means
the drm_irq.h include in drmP.h needs to be in just the right spot :(

Also noticed that drm_vblank_crtc->last_wait is entirely unused,
remove it.

v2: git add drm_irq.h ...

Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter
2016-07-15 21:48:01 +02:00
parent 9a6bc03cd6
commit 34a67dd7f3
4 changed files with 188 additions and 83 deletions
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1
drivers/gpu/drm/drm_irq.c
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@@ -1695,7 +1695,6 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
DRM_DEBUG("waiting on vblank count %d, crtc %u\n",
vblwait->request.sequence, pipe);
vblank->last_wait = vblwait->request.sequence;
DRM_WAIT_ON(ret, vblank->queue, 3 * HZ,
(((drm_vblank_count(dev, pipe) -
vblwait->request.sequence) <= (1 << 23)) ||