- 根目录:
- sound
- soc
- codecs
- tfa9879.c
/*
* tfa9879.c -- driver for NXP Semiconductors TFA9879
*
* Copyright (C) 2014 Axentia Technologies AB
* Author: Peter Rosin <peda@axentia.se>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>
#include "tfa9879.h"
struct tfa9879_priv {
struct regmap *regmap;
int lsb_justified;
};
static int tfa9879_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
int fs;
int i2s_set = 0;
switch (params_rate(params)) {
case 8000:
fs = TFA9879_I2S_FS_8000;
break;
case 11025:
fs = TFA9879_I2S_FS_11025;
break;
case 12000:
fs = TFA9879_I2S_FS_12000;
break;
case 16000:
fs = TFA9879_I2S_FS_16000;
break;
case 22050:
fs = TFA9879_I2S_FS_22050;
break;
case 24000:
fs = TFA9879_I2S_FS_24000;
break;
case 32000:
fs = TFA9879_I2S_FS_32000;
break;
case 44100:
fs = TFA9879_I2S_FS_44100;
break;
case 48000:
fs = TFA9879_I2S_FS_48000;
break;
case 64000:
fs = TFA9879_I2S_FS_64000;
break;
case 88200:
fs = TFA9879_I2S_FS_88200;
break;
case 96000:
fs = TFA9879_I2S_FS_96000;
break;
default:
return -EINVAL;
}
switch (params_width(params)) {
case 16:
i2s_set = TFA9879_I2S_SET_LSB_J_16;
break;
case 24:
i2s_set = TFA9879_I2S_SET_LSB_J_24;
break;
default:
return -EINVAL;
}
if (tfa9879->lsb_justified)
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_I2S_SET_MASK,
i2s_set << TFA9879_I2S_SET_SHIFT);
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_I2S_FS_MASK,
fs << TFA9879_I2S_FS_SHIFT);
return 0;
}
static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
snd_soc_update_bits(codec, TFA9879_MISC_CONTROL,
TFA9879_S_MUTE_MASK,
!!mute << TFA9879_S_MUTE_SHIFT);
return 0;
}
static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
int i2s_set;
int sck_pol;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
sck_pol = TFA9879_SCK_POL_NORMAL;
break;
case SND_SOC_DAIFMT_IB_NF:
sck_pol = TFA9879_SCK_POL_INVERSE;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
tfa9879->lsb_justified = 0;
i2s_set = TFA9879_I2S_SET_I2S_24;
break;
case SND_SOC_DAIFMT_LEFT_J:
tfa9879->lsb_justified = 0;
i2s_set = TFA9879_I2S_SET_MSB_J_24;
break;
case SND_SOC_DAIFMT_RIGHT_J:
tfa9879->lsb_justified = 1;
i2s_set = TFA9879_I2S_SET_LSB_J_24;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_SCK_POL_MASK,
sck_pol << TFA9879_SCK_POL_SHIFT);
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_I2S_SET_MASK,
i2s_set << TFA9879_I2S_SET_SHIFT);
return 0;
}
static struct reg_default tfa9879_regs[] = {
{ TFA9879_DEVICE_CONTROL, 0x0000 }, /* 0x00 */
{ TFA9879_SERIAL_INTERFACE_1, 0x0a18 }, /* 0x01 */
{ TFA9879_PCM_IOM2_FORMAT_1, 0x0007 }, /* 0x02 */
{ TFA9879_SERIAL_INTERFACE_2, 0x0a18 }, /* 0x03 */
{ TFA9879_PCM_IOM2_FORMAT_2, 0x0007 }, /* 0x04 */
{ TFA9879_EQUALIZER_A1, 0x59dd }, /* 0x05 */
{ TFA9879_EQUALIZER_A2, 0xc63e }, /* 0x06 */
{ TFA9879_EQUALIZER_B1, 0x651a }, /* 0x07 */
{ TFA9879_EQUALIZER_B2, 0xe53e }, /* 0x08 */
{ TFA9879_EQUALIZER_C1, 0x4616 }, /* 0x09 */
{ TFA9879_EQUALIZER_C2, 0xd33e }, /* 0x0a */
{ TFA9879_EQUALIZER_D1, 0x4df3 }, /* 0x0b */
{ TFA9879_EQUALIZER_D2, 0xea3e }, /* 0x0c */
{ TFA9879_EQUALIZER_E1, 0x5ee0 }, /* 0x0d */
{ TFA9879_EQUALIZER_E2, 0xf93e }, /* 0x0e */
{ TFA9879_BYPASS_CONTROL, 0x0093 }, /* 0x0f */
{ TFA9879_DYNAMIC_RANGE_COMPR, 0x92ba }, /* 0x10 */
{ TFA9879_BASS_TREBLE, 0x12a5 }, /* 0x11 */
{ TFA9879_HIGH_PASS_FILTER, 0x0004 }, /* 0x12 */
{ TFA9879_VOLUME_CONTROL, 0x10bd }, /* 0x13 */
{ TFA9879_MISC_CONTROL, 0x0000 }, /* 0x14 */
};
static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
{
return reg == TFA9879_MISC_STATUS;
}
static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
static const char * const tb_freq_text[] = {
"Low", "Mid", "High"
};
static const struct soc_enum treble_freq_enum =
SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
ARRAY_SIZE(tb_freq_text), tb_freq_text);
static const struct soc_enum bass_freq_enum =
SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
ARRAY_SIZE(tb_freq_text), tb_freq_text);
static const struct snd_kcontrol_new tfa9879_controls[] = {
SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
SOC_ENUM("Treble Corner Freq", treble_freq_enum),
SOC_ENUM("Bass Corner Freq", bass_freq_enum),
};
static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
SND_SOC_DAPM_OUTPUT("LINEOUT"),
SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
NULL, 0),
};
static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
{ "DAC", NULL, "AIFINL" },
{ "DAC", NULL, "AIFINR" },
{ "LINEOUT", NULL, "DAC" },
{ "DAC", NULL, "POWER" },
};
static const struct snd_soc_codec_driver tfa9879_codec = {
.controls = tfa9879_controls,
.num_controls = ARRAY_SIZE(tfa9879_controls),
.dapm_widgets = tfa9879_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tfa9879_dapm_widgets),
.dapm_routes = tfa9879_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(tfa9879_dapm_routes),
};
static const struct regmap_config tfa9879_regmap = {
.reg_bits = 8,
.val_bits = 16,
.volatile_reg = tfa9879_volatile_reg,
.max_register = TFA9879_MISC_STATUS,
.reg_defaults = tfa9879_regs,
.num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
.cache_type = REGCACHE_RBTREE,
};
static const struct snd_soc_dai_ops tfa9879_dai_ops = {
.hw_params = tfa9879_hw_params,
.digital_mute = tfa9879_digital_mute,
.set_fmt = tfa9879_set_fmt,
};
#define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
#define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_driver tfa9879_dai = {
.name = "tfa9879-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = TFA9879_RATES,
.formats = TFA9879_FORMATS, },
.ops = &tfa9879_dai_ops,
};
static int tfa9879_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct tfa9879_priv *tfa9879;
int i;
tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
if (!tfa9879)
return -ENOMEM;
i2c_set_clientdata(i2c, tfa9879);
tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
if (IS_ERR(tfa9879->regmap))
return PTR_ERR(tfa9879->regmap);
/* Ensure the device is in reset state */
for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
regmap_write(tfa9879->regmap,
tfa9879_regs[i].reg, tfa9879_regs[i].def);
return snd_soc_register_codec(&i2c->dev, &tfa9879_codec,
&tfa9879_dai, 1);
}
static int tfa9879_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id tfa9879_i2c_id[] = {
{ "tfa9879", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
static struct i2c_driver tfa9879_i2c_driver = {
.driver = {
.name = "tfa9879",
.owner = THIS_MODULE,
},
.probe = tfa9879_i2c_probe,
.remove = tfa9879_i2c_remove,
.id_table = tfa9879_i2c_id,
};
module_i2c_driver(tfa9879_i2c_driver);
MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
MODULE_LICENSE("GPL");