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linux/sound/soc/codecs/tfa9879.c
Javier Martinez Canillas 56ae83f11d
ASoC: tfa9879: Export OF device ID as module alias 
The I2C core always reports a MODALIAS of the form i2c:<foo> even if the
device was registered via OF, this means that exporting the OF device ID
table device aliases in the module is not needed. But in order to change
how the core reports modaliases to user-space, it's better to export it.

Before this patch:

$ modinfo sound/soc/codecs/snd-soc-tfa9879.ko  | grep alias
alias:          i2c:tfa9879

After this patch:

$ modinfo sound/soc/codecs/snd-soc-tfa9879.ko  | grep alias
alias:          i2c:tfa9879
alias:          of:N*T*Cnxp,tfa9879C*
alias:          of:N*T*Cnxp,tfa9879

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-01 12:50:10 +00:00

336 lines
8.7 KiB
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/*
* 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 const 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 = {
.component_driver = {
.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 const struct of_device_id tfa9879_of_match[] = {
{ .compatible = "nxp,tfa9879", },
{ }
};
MODULE_DEVICE_TABLE(of, tfa9879_of_match);
static struct i2c_driver tfa9879_i2c_driver = {
.driver = {
.name = "tfa9879",
.of_match_table = tfa9879_of_match,
},
.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");
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