DPI_FIFO_EMPTY    982 drivers/gpu/drm/gma500/psb_intel_reg.h #define DPI_FIFO_EMPTY				(1 << 28)
DPI_FIFO_EMPTY   10819 drivers/gpu/drm/i915/i915_reg.h #define  DPI_FIFO_EMPTY					(1 << 28)