Add a control for selecting the codec operation mode. TWL4030 codec
has two modes:
- Option 1. Audio only (4 audio DACs)
- Option 2. Voice/Audio (2 audio DACs and voice ADC/DAC)
Control is restricted when a stream is ongoing, since codec's
operation mode cannot be changed on-the-fly.
Signed-off-by: Misael Lopez Cruz <x0052729@xxxxxx>
---
sound/soc/codecs/twl4030.c | 47 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index e4d683d..8eca0f4 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -814,6 +814,48 @@ static int snd_soc_put_volsw_r2_twl4030(struct snd_kcontrol *kcontrol,
return err;
}
+/* Codec operation modes */
+static const char *twl4030_op_modes_texts[] = {
+ "Option 2 (voice/audio)", "Option 1 (audio)"
+};
+
+static const struct soc_enum twl4030_op_modes_enum =
+ SOC_ENUM_SINGLE(TWL4030_REG_CODEC_MODE, 0,
+ ARRAY_SIZE(twl4030_op_modes_texts),
+ twl4030_op_modes_texts);
+
+int snd_soc_put_twl4030_opmode_enum_double(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct twl4030_priv *twl4030 = codec->private_data;
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned short val;
+ unsigned short mask, bitmask;
+
+ if (twl4030->configured) {
+ printk(KERN_ERR "twl4030 operation mode cannot be "
+ "changed on-the-fly\n");
+ return -EBUSY;
+ }
+
+ for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
+ ;
+ if (ucontrol->value.enumerated.item[0] > e->max - 1)
+ return -EINVAL;
+
+ val = ucontrol->value.enumerated.item[0] << e->shift_l;
+ mask = (bitmask - 1) << e->shift_l;
+ if (e->shift_l != e->shift_r) {
+ if (ucontrol->value.enumerated.item[1] > e->max - 1)
+ return -EINVAL;
+ val |= ucontrol->value.enumerated.item[1] << e->shift_r;
+ mask |= (bitmask - 1) << e->shift_r;
+ }
+
+ return snd_soc_update_bits(codec, e->reg, mask, val);
+}
+
/*
* FGAIN volume control:
* from -62 to 0 dB in 1 dB steps (mute instead of -63 dB)
@@ -895,6 +937,11 @@ static const struct soc_enum twl4030_vibradir_enum =
twl4030_vibradir_texts);
static const struct snd_kcontrol_new twl4030_snd_controls[] = {
+ /* Codec operation mode control */
+ SOC_ENUM_EXT("Codec Operation Mode", twl4030_op_modes_enum,
+ snd_soc_get_enum_double,
+ snd_soc_put_twl4030_opmode_enum_double),
+
/* Common playback gain controls */
SOC_DOUBLE_R_TLV("DAC1 Digital Fine Playback Volume",
TWL4030_REG_ARXL1PGA, TWL4030_REG_ARXR1PGA,
--
1.5.4.3
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