+static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
+
+static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ u16 val, reg;
+
+ val = (ucontrol->value.integer.value[0] & 0x07);
+
+ /* linear conversion to userspace
+ * 000 = -6db
+ * 001 = -9db
+ * 010 = -12db
+ * 011 = -18db (Min)
+ * 100 = 0db (Max)
+ */
+ val = (val >= 4) ? 4 : (3 - val);
+
+ reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
+ tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
+
+ return 0;
+}
+
+static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ u16 val;
+
+ val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
+ val = val >> 6;
+ val = (val >= 4) ? 4 : (3 - val);
+ ucontrol->value.integer.value[0] = val;
+ return 0;
+
+}
+
+#define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
+ SNDRV_CTL_ELEM_ACCESS_READWRITE,\
+ .tlv.p = (tlv_array), \
+ .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\
+ .put = snd_soc_tlv320aic23_put_volsw, \
+ .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }