drm/i915: Check eDP power when doing aux channel communications

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Verify that the eDP VDD is on, either with the panel being on or with
the VDD force-on bit being set.

This demonstrates that in many instances, VDD is not on when needed,
which leads to failed EDID communications.

Signed-off-by: Keith Packard <keithp@keithp.com>

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Keith Packard 2011-09-19 13:54:47 -07:00

parent 47f0eb2234

commit 9b984daec4

1 changed files with 22 additions and 0 deletions

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drivers/gpu/drm/i915/intel_dp.c

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