BCM2835_I2S_CH1_POS  518 sound/soc/bcm/bcm2835-i2s.c 		| BCM2835_I2S_CH1_POS(rx_ch1_pos)
BCM2835_I2S_CH1_POS  522 sound/soc/bcm/bcm2835-i2s.c 		| BCM2835_I2S_CH1_POS(tx_ch1_pos)