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ASoC: ak5558: Add support for AK5558 ADC driver 

AK5558 is a 32-bit, 768 kHZ sampling, differential input ADC
for digital audio systems.

Datasheet is available at:

https://www.akm.com/akm/en/file/datasheet/AK5558VN.pdf

Initial patch includes support for normal and TDM modes.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>
[initial coding for 3.18 kernel]
Signed-off-by: Mihai Serban <mihai.serban@nxp.com>
[cleanups and porting to 4.9 kernel]
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
[tdm support]
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
[pm support, cleanups and porting to latest kernel]
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Daniel Baluta 2018-02-13 16:29:33 +02:00 committed by Mark Brown
parent 7928b2cbe5
commit 9208847774
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
4 changed files with 477 additions and 0 deletions
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6
sound/soc/codecs/Kconfig
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@ -42,6 +42,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_AK4642 if I2C
select SND_SOC_AK4671 if I2C
select SND_SOC_AK5386
select SND_SOC_AK5558 if I2C
select SND_SOC_ALC5623 if I2C
select SND_SOC_ALC5632 if I2C
select SND_SOC_BT_SCO
@ -398,6 +399,11 @@ config SND_SOC_AK4671
config SND_SOC_AK5386
tristate "AKM AK5638 CODEC"
config SND_SOC_AK5558
tristate "AKM AK5558 CODEC"
depends on I2C
select REGMAP_I2C
config SND_SOC_ALC5623
tristate "Realtek ALC5623 CODEC"
depends on I2C

2
sound/soc/codecs/Makefile
View File

@ -34,6 +34,7 @@ snd-soc-ak4641-objs := ak4641.o
snd-soc-ak4642-objs := ak4642.o
snd-soc-ak4671-objs := ak4671.o
snd-soc-ak5386-objs := ak5386.o
snd-soc-ak5558-objs := ak5558.o
snd-soc-arizona-objs := arizona.o
snd-soc-bt-sco-objs := bt-sco.o
snd-soc-cq93vc-objs := cq93vc.o
@ -277,6 +278,7 @@ obj-$(CONFIG_SND_SOC_AK4641) += snd-soc-ak4641.o
obj-$(CONFIG_SND_SOC_AK4642) += snd-soc-ak4642.o
obj-$(CONFIG_SND_SOC_AK4671) += snd-soc-ak4671.o
obj-$(CONFIG_SND_SOC_AK5386) += snd-soc-ak5386.o
obj-$(CONFIG_SND_SOC_AK5558) += snd-soc-ak5558.o
obj-$(CONFIG_SND_SOC_ALC5623) += snd-soc-alc5623.o
obj-$(CONFIG_SND_SOC_ALC5632) += snd-soc-alc5632.o
obj-$(CONFIG_SND_SOC_ARIZONA) += snd-soc-arizona.o

417
sound/soc/codecs/ak5558.c Normal file
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@ -0,0 +1,417 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Audio driver for AK5558 ADC
*
* Copyright (C) 2015 Asahi Kasei Microdevices Corporation
* Copyright 2018 NXP
*/
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include "ak5558.h"
/* AK5558 Codec Private Data */
struct ak5558_priv {
struct snd_soc_codec codec;
struct regmap *regmap;
struct i2c_client *i2c;
struct gpio_desc *reset_gpiod; /* Reset & Power down GPIO */
int slots;
int slot_width;
};
/* ak5558 register cache & default register settings */
static const struct reg_default ak5558_reg[] = {
{ 0x0, 0xFF }, /* 0x00 AK5558_00_POWER_MANAGEMENT1 */
{ 0x1, 0x01 }, /* 0x01 AK5558_01_POWER_MANAGEMENT2 */
{ 0x2, 0x01 }, /* 0x02 AK5558_02_CONTROL1 */
{ 0x3, 0x00 }, /* 0x03 AK5558_03_CONTROL2 */
{ 0x4, 0x00 }, /* 0x04 AK5558_04_CONTROL3 */
{ 0x5, 0x00 } /* 0x05 AK5558_05_DSD */
};
static const char * const mono_texts[] = {
"8 Slot", "2 Slot", "4 Slot", "1 Slot",
};
static const struct soc_enum ak5558_mono_enum[] = {
SOC_ENUM_SINGLE(AK5558_01_POWER_MANAGEMENT2, 1,
ARRAY_SIZE(mono_texts), mono_texts),
};
static const char * const digfil_texts[] = {
"Sharp Roll-Off", "Show Roll-Off",
"Short Delay Sharp Roll-Off", "Short Delay Show Roll-Off",
};
static const struct soc_enum ak5558_adcset_enum[] = {
SOC_ENUM_SINGLE(AK5558_04_CONTROL3, 0,
ARRAY_SIZE(digfil_texts), digfil_texts),
};
static const struct snd_kcontrol_new ak5558_snd_controls[] = {
SOC_ENUM("AK5558 Monaural Mode", ak5558_mono_enum[0]),
SOC_ENUM("AK5558 Digital Filter", ak5558_adcset_enum[0]),
};
static const struct snd_soc_dapm_widget ak5558_dapm_widgets[] = {
/* Analog Input */
SND_SOC_DAPM_INPUT("AIN1"),
SND_SOC_DAPM_INPUT("AIN2"),
SND_SOC_DAPM_INPUT("AIN3"),
SND_SOC_DAPM_INPUT("AIN4"),
SND_SOC_DAPM_INPUT("AIN5"),
SND_SOC_DAPM_INPUT("AIN6"),
SND_SOC_DAPM_INPUT("AIN7"),
SND_SOC_DAPM_INPUT("AIN8"),
SND_SOC_DAPM_ADC("ADC Ch1", NULL, AK5558_00_POWER_MANAGEMENT1, 0, 0),
SND_SOC_DAPM_ADC("ADC Ch2", NULL, AK5558_00_POWER_MANAGEMENT1, 1, 0),
SND_SOC_DAPM_ADC("ADC Ch3", NULL, AK5558_00_POWER_MANAGEMENT1, 2, 0),
SND_SOC_DAPM_ADC("ADC Ch4", NULL, AK5558_00_POWER_MANAGEMENT1, 3, 0),
SND_SOC_DAPM_ADC("ADC Ch5", NULL, AK5558_00_POWER_MANAGEMENT1, 4, 0),
SND_SOC_DAPM_ADC("ADC Ch6", NULL, AK5558_00_POWER_MANAGEMENT1, 5, 0),
SND_SOC_DAPM_ADC("ADC Ch7", NULL, AK5558_00_POWER_MANAGEMENT1, 6, 0),
SND_SOC_DAPM_ADC("ADC Ch8", NULL, AK5558_00_POWER_MANAGEMENT1, 7, 0),
SND_SOC_DAPM_AIF_OUT("SDTO", "Capture", 0, SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route ak5558_intercon[] = {
{"ADC Ch1", NULL, "AIN1"},
{"SDTO", NULL, "ADC Ch1"},
{"ADC Ch2", NULL, "AIN2"},
{"SDTO", NULL, "ADC Ch2"},
{"ADC Ch3", NULL, "AIN3"},
{"SDTO", NULL, "ADC Ch3"},
{"ADC Ch4", NULL, "AIN4"},
{"SDTO", NULL, "ADC Ch4"},
{"ADC Ch5", NULL, "AIN5"},
{"SDTO", NULL, "ADC Ch5"},
{"ADC Ch6", NULL, "AIN6"},
{"SDTO", NULL, "ADC Ch6"},
{"ADC Ch7", NULL, "AIN7"},
{"SDTO", NULL, "ADC Ch7"},
{"ADC Ch8", NULL, "AIN8"},
{"SDTO", NULL, "ADC Ch8"},
};
static int ak5558_set_mcki(struct snd_soc_codec *codec)
{
return snd_soc_update_bits(codec, AK5558_02_CONTROL1, AK5558_CKS,
AK5558_CKS_AUTO);
}
static int ak5558_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 ak5558_priv *ak5558 = snd_soc_codec_get_drvdata(codec);
u8 bits;
int pcm_width = max(params_physical_width(params), ak5558->slot_width);
/* set master/slave audio interface */
bits = snd_soc_read(codec, AK5558_02_CONTROL1);
bits &= ~AK5558_BITS;
switch (pcm_width) {
case 16:
bits |= AK5558_DIF_24BIT_MODE;
break;
case 32:
bits |= AK5558_DIF_32BIT_MODE;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, AK5558_02_CONTROL1, AK5558_BITS, bits);
return 0;
}
static int ak5558_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
u8 format;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
case SND_SOC_DAIFMT_CBM_CFM:
break;
case SND_SOC_DAIFMT_CBS_CFM:
case SND_SOC_DAIFMT_CBM_CFS:
default:
dev_err(dai->dev, "Clock mode unsupported");
return -EINVAL;
}
/* set master/slave audio interface */
format = snd_soc_read(codec, AK5558_02_CONTROL1);
format &= ~AK5558_DIF;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
format |= AK5558_DIF_I2S_MODE;
break;
case SND_SOC_DAIFMT_LEFT_J:
format |= AK5558_DIF_MSB_MODE;
break;
case SND_SOC_DAIFMT_DSP_B:
format |= AK5558_DIF_MSB_MODE;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, AK5558_02_CONTROL1, AK5558_DIF, format);
return 0;
}
static int ak5558_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots,
int slot_width)
{
struct snd_soc_codec *codec = dai->codec;
struct ak5558_priv *ak5558 = snd_soc_codec_get_drvdata(codec);
int tdm_mode;
ak5558->slots = slots;
ak5558->slot_width = slot_width;
switch (slots * slot_width) {
case 128:
tdm_mode = AK5558_MODE_TDM128;
break;
case 256:
tdm_mode = AK5558_MODE_TDM256;
break;
case 512:
tdm_mode = AK5558_MODE_TDM512;
break;
default:
tdm_mode = AK5558_MODE_NORMAL;
break;
}
snd_soc_update_bits(codec, AK5558_03_CONTROL2, AK5558_MODE_BITS,
tdm_mode);
return 0;
}
#define AK5558_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE)
static const unsigned int ak5558_rates[] = {
8000, 11025, 16000, 22050,
32000, 44100, 48000, 88200,
96000, 176400, 192000, 352800,
384000, 705600, 768000, 1411200,
2822400,
};
static const struct snd_pcm_hw_constraint_list ak5558_rate_constraints = {
.count = ARRAY_SIZE(ak5558_rates),
.list = ak5558_rates,
};
static int ak5558_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
return snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&ak5558_rate_constraints);
}
static struct snd_soc_dai_ops ak5558_dai_ops = {
.startup = ak5558_startup,
.hw_params = ak5558_hw_params,
.set_fmt = ak5558_set_dai_fmt,
.set_tdm_slot = ak5558_set_tdm_slot,
};
static struct snd_soc_dai_driver ak5558_dai = {
.name = "ak5558-aif",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 8,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = AK5558_FORMATS,
},
.ops = &ak5558_dai_ops,
};
static void ak5558_power_off(struct ak5558_priv *ak5558)
{
if (!ak5558->reset_gpiod)
return;
gpiod_set_value_cansleep(ak5558->reset_gpiod, 0);
usleep_range(1000, 2000);
}
static void ak5558_power_on(struct ak5558_priv *ak5558)
{
if (!ak5558->reset_gpiod)
return;
gpiod_set_value_cansleep(ak5558->reset_gpiod, 1);
usleep_range(1000, 2000);
}
static int ak5558_probe(struct snd_soc_codec *codec)
{
struct ak5558_priv *ak5558 = snd_soc_codec_get_drvdata(codec);
ak5558_power_on(ak5558);
return ak5558_set_mcki(codec);
}
static int ak5558_remove(struct snd_soc_codec *codec)
{
struct ak5558_priv *ak5558 = snd_soc_codec_get_drvdata(codec);
ak5558_power_off(ak5558);
return 0;
}
static int __maybe_unused ak5558_runtime_suspend(struct device *dev)
{
struct ak5558_priv *ak5558 = dev_get_drvdata(dev);
regcache_cache_only(ak5558->regmap, true);
ak5558_power_off(ak5558);
return 0;
}
static int __maybe_unused ak5558_runtime_resume(struct device *dev)
{
struct ak5558_priv *ak5558 = dev_get_drvdata(dev);
ak5558_power_off(ak5558);
ak5558_power_on(ak5558);
regcache_cache_only(ak5558->regmap, false);
regcache_mark_dirty(ak5558->regmap);
return regcache_sync(ak5558->regmap);
}
const struct dev_pm_ops ak5558_pm = {
SET_RUNTIME_PM_OPS(ak5558_runtime_suspend, ak5558_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
struct snd_soc_codec_driver soc_codec_dev_ak5558 = {
.probe = ak5558_probe,
.remove = ak5558_remove,
.component_driver = {
.controls = ak5558_snd_controls,
.num_controls = ARRAY_SIZE(ak5558_snd_controls),
.dapm_widgets = ak5558_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak5558_dapm_widgets),
.dapm_routes = ak5558_intercon,
.num_dapm_routes = ARRAY_SIZE(ak5558_intercon),
},
};
static const struct regmap_config ak5558_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = AK5558_05_DSD,
.reg_defaults = ak5558_reg,
.num_reg_defaults = ARRAY_SIZE(ak5558_reg),
.cache_type = REGCACHE_RBTREE,
};
static int ak5558_i2c_probe(struct i2c_client *i2c)
{
struct ak5558_priv *ak5558;
int ret = 0;
ak5558 = devm_kzalloc(&i2c->dev, sizeof(*ak5558), GFP_KERNEL);
if (!ak5558)
return -ENOMEM;
ak5558->regmap = devm_regmap_init_i2c(i2c, &ak5558_regmap);
if (IS_ERR(ak5558->regmap))
return PTR_ERR(ak5558->regmap);
i2c_set_clientdata(i2c, ak5558);
ak5558->i2c = i2c;
ak5558->reset_gpiod = devm_gpiod_get_optional(&i2c->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(ak5558->reset_gpiod))
return PTR_ERR(ak5558->reset_gpiod);
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak5558,
&ak5558_dai, 1);
if (ret)
return ret;
pm_runtime_enable(&i2c->dev);
return 0;
}
static int ak5558_i2c_remove(struct i2c_client *i2c)
{
snd_soc_unregister_codec(&i2c->dev);
pm_runtime_disable(&i2c->dev);
return 0;
}
static const struct of_device_id ak5558_i2c_dt_ids[] = {
{ .compatible = "asahi-kasei,ak5558"},
{ }
};
static struct i2c_driver ak5558_i2c_driver = {
.driver = {
.name = "ak5558",
.of_match_table = of_match_ptr(ak5558_i2c_dt_ids),
.pm = &ak5558_pm,
},
.probe_new = ak5558_i2c_probe,
.remove = ak5558_i2c_remove,
};
module_i2c_driver(ak5558_i2c_driver);
MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
MODULE_DESCRIPTION("ASoC AK5558 ADC driver");
MODULE_LICENSE("GPL v2");

52
sound/soc/codecs/ak5558.h Normal file
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@ -0,0 +1,52 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Audio driver header for AK5558
*
* Copyright (C) 2016 Asahi Kasei Microdevices Corporation
* Copyright 2018 NXP
*/
#ifndef _AK5558_H
#define _AK5558_H
#define AK5558_00_POWER_MANAGEMENT1 0x00
#define AK5558_01_POWER_MANAGEMENT2 0x01
#define AK5558_02_CONTROL1 0x02
#define AK5558_03_CONTROL2 0x03
#define AK5558_04_CONTROL3 0x04
#define AK5558_05_DSD 0x05
/* AK5558_02_CONTROL1 fields */
#define AK5558_DIF GENMASK(1, 1)
#define AK5558_DIF_MSB_MODE (0 << 1)
#define AK5558_DIF_I2S_MODE (1 << 1)
#define AK5558_BITS GENMASK(2, 2)
#define AK5558_DIF_24BIT_MODE (0 << 2)
#define AK5558_DIF_32BIT_MODE (1 << 2)
#define AK5558_CKS GENMASK(6, 3)
#define AK5558_CKS_128FS_192KHZ (0 << 3)
#define AK5558_CKS_192FS_192KHZ (1 << 3)
#define AK5558_CKS_256FS_48KHZ (2 << 3)
#define AK5558_CKS_256FS_96KHZ (3 << 3)
#define AK5558_CKS_384FS_96KHZ (4 << 3)
#define AK5558_CKS_384FS_48KHZ (5 << 3)
#define AK5558_CKS_512FS_48KHZ (6 << 3)
#define AK5558_CKS_768FS_48KHZ (7 << 3)
#define AK5558_CKS_64FS_384KHZ (8 << 3)
#define AK5558_CKS_32FS_768KHZ (9 << 3)
#define AK5558_CKS_96FS_384KHZ (10 << 3)
#define AK5558_CKS_48FS_768KHZ (11 << 3)
#define AK5558_CKS_64FS_768KHZ (12 << 3)
#define AK5558_CKS_1024FS_16KHZ (13 << 3)
#define AK5558_CKS_AUTO (15 << 3)
/* AK5558_03_CONTROL2 fields */
#define AK5558_MODE_BITS GENMASK(6, 5)
#define AK5558_MODE_NORMAL (0 << 5)
#define AK5558_MODE_TDM128 (1 << 5)
#define AK5558_MODE_TDM256 (2 << 5)
#define AK5558_MODE_TDM512 (3 << 5)
#endif