ALSA: ASoC: Add custom SOC_SINGLE_TLV for tlv320aic23 codec

Replaces SOC_ENUM with custom SOC_SINGLE_TLV for Sidetone volume

Signed-off-by: Arun KS <arunks@mistralsolutions.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 49 insertions, 4 deletions

diff --git a/sound/soc/codecs/tlv320aic23.c b/sound/soc/codecs/tlv320aic23.c
index c2d35e9de335..bb7cfb80ed45 100644
--- a/sound/soc/codecs/tlv320aic23.c
+++ b/sound/soc/codecs/tlv320aic23.c
@@ -113,7 +113,6 @@ static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
 
 static const char *rec_src_text[] = { "Line", "Mic" };
 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
-static const char *sidetone_text[] = {"-6db", "-9db", "-12db", "-18db", "0db"};
 
 static const struct soc_enum rec_src_enum =
         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
@@ -125,11 +124,56 @@ static const struct soc_enum tlv320aic23_rec_src =
         SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
 static const struct soc_enum tlv320aic23_deemph =
         SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
-static const struct soc_enum tlv320aic23_sidetone =
-        SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 6, 5, sidetone_text);
 
 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
+static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
+
+static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
+        struct snd_ctl_elem_value *ucontrol)
+{
+        struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+        u16 val, reg;
+
+        val = (ucontrol->value.integer.value[0] & 0x07);
+
+        /* linear conversion to userspace
+        * 000   =       -6db
+        * 001   =       -9db
+        * 010   =       -12db
+        * 011   =       -18db (Min)
+        * 100   =       0db (Max)
+        */
+        val = (val >= 4) ? 4  : (3 - val);
+
+        reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
+        tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
+
+        return 0;
+}
+
+static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
+        struct snd_ctl_elem_value *ucontrol)
+{
+        struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+        u16 val;
+
+        val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
+        val = val >> 6;
+        val = (val >= 4) ? 4  : (3 -  val);
+        ucontrol->value.integer.value[0] = val;
+        return 0;
+
+}
+
+#define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
+{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
+                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
+        .tlv.p = (tlv_array), \
+        .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\
+        .put = snd_soc_tlv320aic23_put_volsw, \
+        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 
 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
         SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
@@ -141,7 +185,8 @@ static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
                          TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
         SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
         SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
-        SOC_ENUM("Sidetone Gain", tlv320aic23_sidetone),
+        SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG,
+                                  6, 4, 0, sidetone_vol_tlv),
         SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
 };