drm/i915: Clear FlipDone semantics change for pageflipping on gen3

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On later gen3, you are able to select the meaning of the FlipPending
status bit in IIR and change it to FlipDone. This was sometimes done by
the BIOS leading to confusion on just how pageflipping worked on gen3.
Simplify the implementation by using the legacy meaning for all gen3
machines.

Note: this makes all gen3 machines equally broken...

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Chris Wilson 2012-04-24 22:59:45 +01:00 • committed by Daniel Vetter

parent a266c7d548

commit 4f7d1e79b1

2 changed files with 11 additions and 29 deletions

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1

drivers/gpu/drm/i915/i915_drv.h

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39

drivers/gpu/drm/i915/i915_irq.c

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