This patch includes two minor improvements for da9055 codec driver

(1) Adding support for DSP mode of AIF (2) Muting Mic PGAs during ALC calibration process

Signed-off-by: Ashish Chavan ashish.chavan@kpitcummins.com Signed-off-by: David Dajun Chen david.chen@diasemi.com --- sound/soc/codecs/da9055.c | 26 +++++++++++++++++++++++++- 1 files changed, 25 insertions(+), 1 deletions(-)

diff --git a/sound/soc/codecs/da9055.c b/sound/soc/codecs/da9055.c index 185d8dd..abf3e43 100644 --- a/sound/soc/codecs/da9055.c +++ b/sound/soc/codecs/da9055.c @@ -173,11 +173,18 @@ #define DA9055_AIF_FORMAT_I2S_MODE (0 << 0) #define DA9055_AIF_FORMAT_LEFT_J (1 << 0) #define DA9055_AIF_FORMAT_RIGHT_J (2 << 0) +#define DA9055_AIF_FORMAT_DSP (3 << 0) #define DA9055_AIF_WORD_S16_LE (0 << 2) #define DA9055_AIF_WORD_S20_3LE (1 << 2) #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 +483,7 @@ 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 +492,16 @@ 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 +537,10 @@ 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); @@ -1155,6 +1176,9 @@ static int da9055_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) case SND_SOC_DAIFMT_RIGHT_J: aif_ctrl = DA9055_AIF_FORMAT_RIGHT_J; break; + case SND_SOC_DAIFMT_DSP_A: + aif_ctrl = DA9055_AIF_FORMAT_DSP; + break; default: return -EINVAL; }