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Date: Wed, 10 Oct 2012 17:24:53 +0530
From: Ashish Chavan <ashish.chavan@...tcummins.com>
To: Mark Brown <broonie@...nsource.wolfsonmicro.com>, lrg <lrg@...com>,
alsa-devel <alsa-devel@...a-project.org>
CC: David Dajun Chen <david.chen@...semi.com>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [alsa-devel] [PATCH] ASoC: codecs: da9055: Minor improvements
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@...tcummins.com>
Signed-off-by: David Dajun Chen <david.chen@...semi.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;
}
--
1.7.1
--
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