tree 01dfcd607f90f250fb27cb303747b3d770879742
parent d09c23de9f967a7b7dcee0ffc57222ddbd821aba
author Eric Anholt <eric@anholt.net> 1259697390 -0800
committer Eric Anholt <eric@anholt.net> 1259697390 -0800

drm/i915: Fix DDC on some systems by clearing BIOS GMBUS setup.

This is a sync of a fix I made in the old UMS code.  If the BIOS uses
the GMBUS and doesn't clear that setup, then our bit-banging I2C can
fail, leading to monitors not being detected.

Signed-off-by: Eric Anholt <eric@anholt.net>