GMBUS_RATE_400KHZ   37 drivers/gpu/drm/gma500/psb_intel_reg.h #define   GMBUS_RATE_400KHZ	(2<<8) /* reserved on Pineview */
GMBUS_RATE_400KHZ 3213 drivers/gpu/drm/i915/i915_reg.h #define   GMBUS_RATE_400KHZ	(2 << 8) /* reserved on Pineview */