USP_FIFO_SIZE     274 sound/soc/sirf/sirf-usp.h #define USP_TX_FIFO_THRESHOLD		(USP_FIFO_SIZE/2)
USP_FIFO_SIZE     275 sound/soc/sirf/sirf-usp.h #define USP_RX_FIFO_THRESHOLD		(USP_FIFO_SIZE/2)