From: Lars-Peter Clausen <lars@xxxxxxxxxx>
The PGA Slew Time control allows to configure the rate with which the PGA
gain control ramps up/down to the target setting.
The PGA slew control is done via the ALC Control 0 register. There are 2
bits on that reg, that control PGA slew time, while the other bits control
parts of the ALC (automatic level control) block.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
---
sound/soc/codecs/adau1761.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/sound/soc/codecs/adau1761.c b/sound/soc/codecs/adau1761.c
index bef3e9e74c26..428bf95ea648 100644
--- a/sound/soc/codecs/adau1761.c
+++ b/sound/soc/codecs/adau1761.c
@@ -29,6 +29,7 @@
#define ADAU1761_REC_MIXER_RIGHT1 0x400d
#define ADAU1761_LEFT_DIFF_INPUT_VOL 0x400e
#define ADAU1761_RIGHT_DIFF_INPUT_VOL 0x400f
+#define ADAU1761_ALC_CTRL0 0x4011
#define ADAU1761_PLAY_LR_MIXER_LEFT 0x4020
#define ADAU1761_PLAY_MIXER_LEFT0 0x401c
#define ADAU1761_PLAY_MIXER_LEFT1 0x401d
@@ -72,6 +73,7 @@ static const struct reg_default adau1761_reg_defaults[] = {
{ ADAU1761_REC_MIXER_RIGHT0, 0x00 },
{ ADAU1761_REC_MIXER_RIGHT1, 0x00 },
{ ADAU1761_LEFT_DIFF_INPUT_VOL, 0x00 },
+ { ADAU1761_ALC_CTRL0, 0x00 },
{ ADAU1761_RIGHT_DIFF_INPUT_VOL, 0x00 },
{ ADAU1761_PLAY_LR_MIXER_LEFT, 0x00 },
{ ADAU1761_PLAY_MIXER_LEFT0, 0x00 },
@@ -148,6 +150,21 @@ static SOC_VALUE_ENUM_SINGLE_DECL(adau1761_capture_bias_enum,
ADAU17X1_REC_POWER_MGMT, 1, 0x3, adau1761_bias_select_text,
adau1761_bias_select_values);
+static const unsigned int adau1761_pga_slew_time_values[] = {
+ 3, 0, 1, 2,
+};
+
+static const char * const adau1761_pga_slew_time_text[] = {
+ "Off",
+ "24 ms",
+ "48 ms",
+ "96 ms",
+};
+
+static SOC_VALUE_ENUM_SINGLE_DECL(adau1761_pga_slew_time_enum,
+ ADAU1761_ALC_CTRL0, 6, 0x3, adau1761_pga_slew_time_text,
+ adau1761_pga_slew_time_values);
+
static const struct snd_kcontrol_new adau1761_jack_detect_controls[] = {
SOC_SINGLE("Speaker Auto-mute Switch", ADAU1761_DIGMIC_JACKDETECT,
4, 1, 0),
@@ -162,6 +179,8 @@ static const struct snd_kcontrol_new adau1761_differential_mode_controls[] = {
SOC_DOUBLE_R_TLV("PGA Boost Capture Volume", ADAU1761_REC_MIXER_LEFT1,
ADAU1761_REC_MIXER_RIGHT1, 3, 2, 0, adau1761_pga_boost_tlv),
+
+ SOC_ENUM("PGA Capture Slew Time", adau1761_pga_slew_time_enum),
};
static const struct snd_kcontrol_new adau1761_single_mode_controls[] = {
@@ -633,6 +652,7 @@ static bool adau1761_readable_register(struct device *dev, unsigned int reg)
case ADAU1761_DEJITTER:
case ADAU1761_CLK_ENABLE0:
case ADAU1761_CLK_ENABLE1:
+ case ADAU1761_ALC_CTRL0:
return true;
default:
break;
--
2.20.1
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