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ASoC: codecs: da9055: Minor improvement in ALC calibration process 

This patch slightly improves ALC calibration process of da9055 codec
driver by muting Mic PGAs during calibration.

Signed-off-by: Ashish Chavan <ashish.chavan@kpitcummins.com>
Signed-off-by: David Dajun Chen <david.chen@diasemi.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Ashish Chavan 2012-10-11 14:04:37 +05:30 коммит произвёл Mark Brown
Родитель 961a7aeafa
Коммит c7c0f2cdef
1 изменённых файлов: 21 добавлений и 1 удалений
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22
sound/soc/codecs/da9055.c
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@ -178,6 +178,12 @@
#define DA9055_AIF_WORD_S24_LE (2 << 2)
#define DA9055_AIF_WORD_S32_LE (3 << 2)
/* MIC_L_CTRL bit fields */
#define DA9055_MIC_L_MUTE_EN (1 << 6)
/* MIC_R_CTRL bit fields */
#define DA9055_MIC_R_MUTE_EN (1 << 6)
/* MIXIN_L_CTRL bit fields */
#define DA9055_MIXIN_L_MIX_EN (1 << 3)
@ -476,7 +482,7 @@ static int da9055_put_alc_sw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
u8 reg_val, adc_left, adc_right;
u8 reg_val, adc_left, adc_right, mic_left, mic_right;
int avg_left_data, avg_right_data, offset_l, offset_r;
if (ucontrol->value.integer.value[0]) {
@ -485,6 +491,16 @@ static int da9055_put_alc_sw(struct snd_kcontrol *kcontrol,
* offsets must be done first
*/
/* Save current values from Mic control registers */
mic_left = snd_soc_read(codec, DA9055_MIC_L_CTRL);
mic_right = snd_soc_read(codec, DA9055_MIC_R_CTRL);
/* Mute Mic PGA Left and Right */
snd_soc_update_bits(codec, DA9055_MIC_L_CTRL,
DA9055_MIC_L_MUTE_EN, DA9055_MIC_L_MUTE_EN);
snd_soc_update_bits(codec, DA9055_MIC_R_CTRL,
DA9055_MIC_R_MUTE_EN, DA9055_MIC_R_MUTE_EN);
/* Save current values from ADC control registers */
adc_left = snd_soc_read(codec, DA9055_ADC_L_CTRL);
adc_right = snd_soc_read(codec, DA9055_ADC_R_CTRL);
@ -520,6 +536,10 @@ static int da9055_put_alc_sw(struct snd_kcontrol *kcontrol,
/* Restore original values of ADC control registers */
snd_soc_write(codec, DA9055_ADC_L_CTRL, adc_left);
snd_soc_write(codec, DA9055_ADC_R_CTRL, adc_right);
/* Restore original values of Mic control registers */
snd_soc_write(codec, DA9055_MIC_L_CTRL, mic_left);
snd_soc_write(codec, DA9055_MIC_R_CTRL, mic_right);
}
return snd_soc_put_volsw(kcontrol, ucontrol);