adau1977_adc_gain 156 sound/soc/codecs/adau1977.c static const DECLARE_TLV_DB_MINMAX_MUTE(adau1977_adc_gain, -3562, 6000); adau1977_adc_gain 197 sound/soc/codecs/adau1977.c 0, 255, 1, adau1977_adc_gain)