drm/i915/intel_i2c: gmbus disabled and reserved ports are invalid

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There is no GMBUS "disabled" port 0, nor "reserved" port 7.
For the other 6 ports there is a fixed 1:1 mapping between pin pairs and
gmbus ports, which means every real gmbus port has a gpio pin.

Given these realizations, clean up gmbus initialization.

Tested on Sandybridge (gen 6, PCH == CougarPoint) hardware.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Daniel Kurtz 2012-03-28 02:36:15 +08:00 • committed by Daniel Vetter

parent 3bd7d90938

commit 2ed06c93a1

3 changed files with 29 additions and 46 deletions

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3

drivers/gpu/drm/i915/i915_drv.h

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2

drivers/gpu/drm/i915/i915_reg.h

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70

drivers/gpu/drm/i915/intel_i2c.c

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