drm/i915: Inspect the right status bits for DP/HDMI hotplug on gen4

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The status bits corresponding to the interrupt enable bits are the
"live" hotplug status bits, and reflect the current status of the port
(high for a detected connection, low for a disconnect). The actual bits
corresponding to the interrupt source are elsewhere. The actual event is
then determined by a combination of the interrupt flag and the current
live status (if the interrupt is active, but the current status is not,
then we have detected a disconnect.)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Chris Wilson 2012-05-11 18:01:32 +01:00 • committed by Daniel Vetter

parent adca473021

commit 10f76a3816

2 changed files with 20 additions and 13 deletions

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21

drivers/gpu/drm/i915/i915_reg.h

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12

drivers/gpu/drm/i915/intel_dp.c

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