GMBUS4             71 drivers/gpu/drm/gma500/psb_intel_reg.h #define GMBUS4			0x5110 /* interrupt mask (Pineview+) */
GMBUS4           3242 drivers/gpu/drm/i915/i915_reg.h #define GMBUS4			_MMIO(dev_priv->gpio_mmio_base + 0x5110) /* interrupt mask (Pineview+) */