BAND4 549 sound/soc/codecs/msm8916-wcd-digital.c WCD_IIR_FILTER_CTL("IIR1 Band4", IIR1, BAND4), BAND4 554 sound/soc/codecs/msm8916-wcd-digital.c WCD_IIR_FILTER_CTL("IIR2 Band4", IIR2, BAND4),