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

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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>

...

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Damien Lespiau 2014-08-01 11:07:54 +01:00 • committed by Daniel Vetter

parent da46f936bb

commit ce4dd49e97

3 changed files with 24 additions and 9 deletions

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6

drivers/gpu/drm/i915/i915_drv.h

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13

drivers/gpu/drm/i915/intel_bios.c

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14

drivers/gpu/drm/i915/intel_ddi.c

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