tree a10098e6de01cd540f93e587647ba646a3f977f1
parent da46f936bb0396f6a0fb87c2786f541e9f19a73c
author Damien Lespiau <damien.lespiau@intel.com> 1406887674 +0100
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1407512626 +0200

drm/i915: Gather the HDMI level shifter logic into one place

The knowledge about the HDMI/DVI DDI translation table was scattered
around.
  - info->hdmi_level_shift was initialized with 6, the index of the 800
    mV, 0dB translation
  - A check on the VBT value was done to ensure it wasn't overflowing
    the translation table (< 0xC)
  - The actual programming was done in intel_ddi.c

As we need to change that knowledge for Broadwell, let's gather
everything into one place.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>