drm/i915: disable VGA plane reliably
This does VGA disable like DDX driver. SR01 bit 5 should be set before VGA plane disable through control register, otherwise we might get random crash and lockups. Signed-off-by:Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
Eric Anholt <eric@anholt.net>
parent
cdaa052b
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