SSM2518_REG_DRC_4 206 sound/soc/codecs/ssm2518.c SOC_SINGLE_TLV("DRC Expander Upper Threshold Volume", SSM2518_REG_DRC_4, SSM2518_REG_DRC_4 209 sound/soc/codecs/ssm2518.c SSM2518_REG_DRC_4, 0, 15, 1, ssm2518_noise_gate_tlv),