audio: Add tas5782 volume control [1/1]

PD#SWPL-4734

Problem:
  There is no volume control for tas5782

Solution:
  Add ch1/ch2 volume control for tas5782

Verify:
  A113

Change-Id: I1e866a2bc024713278aea0c19cc8c91084a24b90
Signed-off-by: yujie.wu <yujie.wu@amlogic.com>

diff --git a/sound/soc/codecs/amlogic/tas5782m.c b/sound/soc/codecs/amlogic/tas5782m.c
index 03ea787..4befae2 100644 (file)
--- a/sound/soc/codecs/amlogic/tas5782m.c
+++ b/sound/soc/codecs/amlogic/tas5782m.c
@@ -51,6 +51,15 @@ static void tas5782m_late_resume(struct early_suspend *h);
         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \
         SNDRV_PCM_FMTBIT_S32_LE)
 
+#define TAS5782M_REG_00      (0x00)
+#define TAS5782M_REG_7F      (0x7F)
+#define TAS5782M_REG_28      (0x28)
+#define TAS5782M_REG_29      (0x29)
+#define TAS5782M_REG_3D      (0x3D)
+#define TAS5782M_REG_3E      (0x3E)
+
+
+
 enum BITSIZE_MODE {
        BITSIZE_MODE_16BITS = 0,
        BITSIZE_MODE_20BITS = 1,
@@ -87,11 +96,143 @@ struct tas5782m_priv {
 
 static int g_sample_bitsize = 32;
 
-static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
-static const DECLARE_TLV_DB_SCALE(chvol_tlv, -10300, 50, 1);
+static int tas5782m_ch1_vol_info(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type   = SNDRV_CTL_ELEM_TYPE_INTEGER;
+       uinfo->access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
+                       | SNDRV_CTL_ELEM_ACCESS_READWRITE;
+       uinfo->count  = 1;
 
-static const struct snd_kcontrol_new tas5782m_snd_controls[] = {
+       uinfo->value.integer.min  = 0;
+       uinfo->value.integer.max  = 0xff;
+       uinfo->value.integer.step = 1;
+
+       return 0;
+}
+
+static int tas5782m_ch2_vol_info(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type   = SNDRV_CTL_ELEM_TYPE_INTEGER;
+       uinfo->access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
+                       | SNDRV_CTL_ELEM_ACCESS_READWRITE;
+       uinfo->count  = 1;
+
+       uinfo->value.integer.min  = 0;
+       uinfo->value.integer.max  = 0xff;
+       uinfo->value.integer.step = 1;
+
+       return 0;
+}
+
+
+static int tas5782m_ch1_vol_get(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+       struct tas5782m_priv *tas5782m = snd_soc_codec_get_drvdata(codec);
+
+       ucontrol->value.integer.value[0] = tas5782m->Ch1_vol;
 
+       return 0;
+}
+
+static int tas5782m_ch2_vol_get(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+       struct tas5782m_priv *tas5782m = snd_soc_codec_get_drvdata(codec);
+
+       ucontrol->value.integer.value[0] = tas5782m->Ch2_vol;
+
+       return 0;
+}
+
+
+static void tas5782m_set_volume(struct snd_soc_codec *codec,
+                               int value, int ch_num)
+{
+       unsigned char buf[2];
+       int write_count = 0;
+       struct tas5782m_priv *tas5782m = snd_soc_codec_get_drvdata(codec);
+
+       if (value < 0)
+               value = 0;
+       if (value > 255)
+               value = 255;
+
+       buf[0] = TAS5782M_REG_00, buf[1] = 0x00;
+       write_count = 2;
+       if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count))
+               pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
+                               __func__, __LINE__);
+
+       buf[0] = TAS5782M_REG_7F, buf[1] = 0x00;
+       write_count = 2;
+       if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count))
+               pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
+                               __func__, __LINE__);
+
+       buf[0] = TAS5782M_REG_00, buf[1] = 0x00;
+       write_count = 2;
+       if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count))
+               pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
+                               __func__, __LINE__);
+
+       buf[0] = (ch_num == 0) ? TAS5782M_REG_3D : TAS5782M_REG_3E;
+       buf[1] = value;
+       write_count = 2;
+       if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count))
+               pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
+                               __func__, __LINE__);
+
+}
+
+static int tas5782m_ch1_vol_put(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+       struct tas5782m_priv *tas5782m = snd_soc_codec_get_drvdata(codec);
+       int value;
+
+       value = ucontrol->value.integer.value[0];
+       tas5782m->Ch1_vol = value;
+       tas5782m_set_volume(codec, value, 0);
+
+       return 0;
+}
+
+static int tas5782m_ch2_vol_put(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+       struct tas5782m_priv *tas5782m = snd_soc_codec_get_drvdata(codec);
+       int value;
+
+       value = ucontrol->value.integer.value[0];
+       tas5782m->Ch2_vol = value;
+       tas5782m_set_volume(codec, value, 1);
+
+       return 0;
+}
+
+
+static const struct snd_kcontrol_new tas5782m_snd_controls[] = {
+       {
+               .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+               .name  = "Ch1 Volume",
+               .info  = tas5782m_ch1_vol_info,
+               .get   = tas5782m_ch1_vol_get,
+               .put   = tas5782m_ch1_vol_put,
+       },
+       {
+               .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+               .name  = "Ch2 Volume",
+               .info  = tas5782m_ch2_vol_info,
+               .get   = tas5782m_ch2_vol_get,
+               .put   = tas5782m_ch2_vol_put,
+       }
 };
 
 static int tas5782m_set_dai_sysclk(struct snd_soc_dai *codec_dai,
@@ -245,17 +386,18 @@ static int tas5782m_init_i2s_tdm_mode(struct snd_soc_codec *codec, int bit_size)
        enum BITSIZE_MODE bit_value = BITSIZE_MODE_32BITS;
 
        write_count = 2;
+       buf[0] = TAS5782M_REG_00, buf[1] = 0x00;
        if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count))
                pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
                                __func__, __LINE__);
 
-       buf[0] = 0x7f, buf[1] = 0x00;
+       buf[0] = TAS5782M_REG_7F, buf[1] = 0x00;
        write_count = 2;
        if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count))
                pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
                                __func__, __LINE__);
 
-       buf[0] = 0x00, buf[1] = 0x00;
+       buf[0] = TAS5782M_REG_00, buf[1] = 0x00;
        write_count = 2;
        if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count))
                pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
@@ -270,7 +412,7 @@ static int tas5782m_init_i2s_tdm_mode(struct snd_soc_codec *codec, int bit_size)
        else if (bit_size == 32)
                bit_value = BITSIZE_MODE_32BITS;
 
-       buf[0] = 0x28, buf[1] = (work_mod << 4) | bit_value;
+       buf[0] = TAS5782M_REG_28, buf[1] = (work_mod << 4) | bit_value;
        write_count = 2;
        if (write_count != i2c_master_send(tas5782m->i2c, buf, write_count)) {
                pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
@@ -282,21 +424,21 @@ static int tas5782m_init_i2s_tdm_mode(struct snd_soc_codec *codec, int bit_size)
        }
 
        if (work_mod == WORK_MODE_TDM) {
-               buf[0] = 0x00, buf[1] = 0x00;
+               buf[0] = TAS5782M_REG_00, buf[1] = 0x00;
                write_count = 2;
                if (write_count != i2c_master_send(tas5782m->i2c, buf,
                        write_count))
                        pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
                                        __func__, __LINE__);
 
-               buf[0] = 0x7f, buf[1] = 0x00;
+               buf[0] = TAS5782M_REG_7F, buf[1] = 0x00;
                write_count = 2;
                if (write_count != i2c_master_send(tas5782m->i2c, buf,
                        write_count))
                        pr_err("%s %d !!!!! i2c_master_send error !!!!!\n",
                                        __func__, __LINE__);
 
-               buf[0] = 0x00, buf[1] = 0x00;
+               buf[0] = TAS5782M_REG_00, buf[1] = 0x00;
                write_count = 2;
                if (write_count != i2c_master_send(tas5782m->i2c, buf,
                        write_count))
@@ -305,7 +447,7 @@ static int tas5782m_init_i2s_tdm_mode(struct snd_soc_codec *codec, int bit_size)
 
                tdm_aofs = bit_size * 2 * (tas5782m->chip_offset - 1);
 
-               buf[0] = 0x29, buf[1] = tdm_aofs;
+               buf[0] = TAS5782M_REG_29, buf[1] = tdm_aofs;
                write_count = 2;
                if (write_count != i2c_master_send(tas5782m->i2c, buf,
                        write_count)) {