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@@ -178,6 +178,12 @@
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#define DA9055_AIF_WORD_S24_LE (2 << 2)
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#define DA9055_AIF_WORD_S32_LE (3 << 2)
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+/* MIC_L_CTRL bit fields */
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+#define DA9055_MIC_L_MUTE_EN (1 << 6)
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+
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+/* MIC_R_CTRL bit fields */
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+#define DA9055_MIC_R_MUTE_EN (1 << 6)
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+
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/* MIXIN_L_CTRL bit fields */
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#define DA9055_MIXIN_L_MIX_EN (1 << 3)
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@@ -476,7 +482,7 @@ static int da9055_put_alc_sw(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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- u8 reg_val, adc_left, adc_right;
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+ u8 reg_val, adc_left, adc_right, mic_left, mic_right;
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int avg_left_data, avg_right_data, offset_l, offset_r;
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if (ucontrol->value.integer.value[0]) {
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@@ -485,6 +491,16 @@ static int da9055_put_alc_sw(struct snd_kcontrol *kcontrol,
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* offsets must be done first
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*/
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+ /* Save current values from Mic control registers */
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+ mic_left = snd_soc_read(codec, DA9055_MIC_L_CTRL);
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+ mic_right = snd_soc_read(codec, DA9055_MIC_R_CTRL);
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+
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+ /* Mute Mic PGA Left and Right */
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+ snd_soc_update_bits(codec, DA9055_MIC_L_CTRL,
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+ DA9055_MIC_L_MUTE_EN, DA9055_MIC_L_MUTE_EN);
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+ snd_soc_update_bits(codec, DA9055_MIC_R_CTRL,
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+ DA9055_MIC_R_MUTE_EN, DA9055_MIC_R_MUTE_EN);
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+
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/* Save current values from ADC control registers */
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adc_left = snd_soc_read(codec, DA9055_ADC_L_CTRL);
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adc_right = snd_soc_read(codec, DA9055_ADC_R_CTRL);
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@@ -520,6 +536,10 @@ static int da9055_put_alc_sw(struct snd_kcontrol *kcontrol,
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/* Restore original values of ADC control registers */
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snd_soc_write(codec, DA9055_ADC_L_CTRL, adc_left);
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snd_soc_write(codec, DA9055_ADC_R_CTRL, adc_right);
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+
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+ /* Restore original values of Mic control registers */
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+ snd_soc_write(codec, DA9055_MIC_L_CTRL, mic_left);
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+ snd_soc_write(codec, DA9055_MIC_R_CTRL, mic_right);
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}
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return snd_soc_put_volsw(kcontrol, ucontrol);
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