drm/i915/overlay: Workaround i830 overlay activation bug.

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On i830, there exists a bug where an overlay on pipe B requires the mode
clock on pipe A in order to activate. So workaround this by activating
pipe A when trying to enable the overlay on pipe B.

References:

  [Bug 29007] GPU hang on video playback with overlay
  https://bugs.freedesktop.org/show_bug.cgi?id=29007

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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Chris Wilson 2010-07-16 17:13:01 +01:00

parent 5fe82c5ee1

commit 106dadacbe

1 changed files with 67 additions and 4 deletions

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drivers/gpu/drm/i915/intel_overlay.c

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