#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.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"
enum ak555x_type {
AK5558,
AK5552,
};
#define AK5558_NUM_SUPPLIES 2
static const char *ak5558_supply_names[AK5558_NUM_SUPPLIES] = {
"DVDD",
"AVDD",
};
struct ak5558_priv {
struct regulator_bulk_data supplies[AK5558_NUM_SUPPLIES];
struct snd_soc_component component;
struct regmap *regmap;
struct i2c_client *i2c;
struct gpio_desc *reset_gpiod;
int slots;
int slot_width;
};
static const struct reg_default ak5558_reg[] = {
{ 0x0, 0xFF },
{ 0x1, 0x01 },
{ 0x2, 0x01 },
{ 0x3, 0x00 },
{ 0x4, 0x00 },
{ 0x5, 0x00 }
};
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 mono_5552_texts[] = {
"2 Slot", "1 Slot (Fixed)", "2 Slot", "1 Slot (Optimal)",
};
static const struct soc_enum ak5552_mono_enum[] = {
SOC_ENUM_SINGLE(AK5558_01_POWER_MANAGEMENT2, 1,
ARRAY_SIZE(mono_5552_texts), mono_5552_texts),
};
static const char * const digfil_texts[] = {
"Sharp Roll-Off", "Slow Roll-Off",
"Short Delay Sharp Roll-Off", "Short Delay Slow 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("Monaural Mode", ak5558_mono_enum[0]),
SOC_ENUM("Digital Filter", ak5558_adcset_enum[0]),
};
static const struct snd_kcontrol_new ak5552_snd_controls[] = {
SOC_ENUM("Monaural Mode", ak5552_mono_enum[0]),
SOC_ENUM("Digital Filter", ak5558_adcset_enum[0]),
};
static const struct snd_soc_dapm_widget ak5558_dapm_widgets[] = {
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_widget ak5552_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("AIN1"),
SND_SOC_DAPM_INPUT("AIN2"),
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_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 const struct snd_soc_dapm_route ak5552_intercon[] = {
{"ADC Ch1", NULL, "AIN1"},
{"SDTO", NULL, "ADC Ch1"},
{"ADC Ch2", NULL, "AIN2"},
{"SDTO", NULL, "ADC Ch2"},
};
static int ak5558_set_mcki(struct snd_soc_component *component)
{
return snd_soc_component_update_bits(component, 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_component *component = dai->component;
struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
u8 bits;
int pcm_width = max(params_physical_width(params), ak5558->slot_width);
switch (pcm_width) {
case 16:
bits = AK5558_DIF_24BIT_MODE;
break;
case 32:
bits = AK5558_DIF_32BIT_MODE;
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component, 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_component *component = dai->component;
u8 format;
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
case SND_SOC_DAIFMT_CBC_CFC:
break;
case SND_SOC_DAIFMT_CBP_CFP:
break;
case SND_SOC_DAIFMT_CBC_CFP:
case SND_SOC_DAIFMT_CBP_CFC:
default:
dev_err(dai->dev, "Clock mode unsupported");
return -EINVAL;
}
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_component_update_bits(component, 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_component *component = dai->component;
struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
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_component_update_bits(component, 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 const 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 struct snd_soc_dai_driver ak5552_dai = {
.name = "ak5552-aif",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = AK5558_FORMATS,
},
.ops = &ak5558_dai_ops,
};
static void ak5558_reset(struct ak5558_priv *ak5558, bool active)
{
if (!ak5558->reset_gpiod)
return;
gpiod_set_value_cansleep(ak5558->reset_gpiod, active);
usleep_range(1000, 2000);
}
static int ak5558_probe(struct snd_soc_component *component)
{
struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
ak5558_reset(ak5558, false);
return ak5558_set_mcki(component);
}
static void ak5558_remove(struct snd_soc_component *component)
{
struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component);
ak5558_reset(ak5558, true);
}
static int ak5558_runtime_suspend(struct device *dev)
{
struct ak5558_priv *ak5558 = dev_get_drvdata(dev);
regcache_cache_only(ak5558->regmap, true);
ak5558_reset(ak5558, true);
regulator_bulk_disable(ARRAY_SIZE(ak5558->supplies),
ak5558->supplies);
return 0;
}
static int ak5558_runtime_resume(struct device *dev)
{
struct ak5558_priv *ak5558 = dev_get_drvdata(dev);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(ak5558->supplies),
ak5558->supplies);
if (ret != 0) {
dev_err(dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
ak5558_reset(ak5558, true);
ak5558_reset(ak5558, false);
regcache_cache_only(ak5558->regmap, false);
regcache_mark_dirty(ak5558->regmap);
ret = regcache_sync(ak5558->regmap);
if (ret)
goto err;
return 0;
err:
regcache_cache_only(ak5558->regmap, true);
regulator_bulk_disable(ARRAY_SIZE(ak5558->supplies), ak5558->supplies);
return ret;
}
static const struct dev_pm_ops ak5558_pm = {
RUNTIME_PM_OPS(ak5558_runtime_suspend, ak5558_runtime_resume, NULL)
SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
};
static const struct snd_soc_component_driver soc_codec_dev_ak5558 = {
.probe = ak5558_probe,
.remove = ak5558_remove,
.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),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct snd_soc_component_driver soc_codec_dev_ak5552 = {
.probe = ak5558_probe,
.remove = ak5558_remove,
.controls = ak5552_snd_controls,
.num_controls = ARRAY_SIZE(ak5552_snd_controls),
.dapm_widgets = ak5552_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak5552_dapm_widgets),
.dapm_routes = ak5552_intercon,
.num_dapm_routes = ARRAY_SIZE(ak5552_intercon),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
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;
int dev_id;
int i;
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);
for (i = 0; i < ARRAY_SIZE(ak5558->supplies); i++)
ak5558->supplies[i].supply = ak5558_supply_names[i];
ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(ak5558->supplies),
ak5558->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
dev_id = (uintptr_t)of_device_get_match_data(&i2c->dev);
switch (dev_id) {
case AK5552:
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_codec_dev_ak5552,
&ak5552_dai, 1);
break;
case AK5558:
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_codec_dev_ak5558,
&ak5558_dai, 1);
break;
default:
dev_err(&i2c->dev, "unexpected device type\n");
return -EINVAL;
}
if (ret < 0) {
dev_err(&i2c->dev, "failed to register component: %d\n", ret);
return ret;
}
pm_runtime_enable(&i2c->dev);
regcache_cache_only(ak5558->regmap, true);
return 0;
}
static void ak5558_i2c_remove(struct i2c_client *i2c)
{
pm_runtime_disable(&i2c->dev);
}
static const struct of_device_id ak5558_i2c_dt_ids[] __maybe_unused = {
{ .compatible = "asahi-kasei,ak5558", .data = (void *) AK5558 },
{ .compatible = "asahi-kasei,ak5552", .data = (void *) AK5552 },
{ }
};
MODULE_DEVICE_TABLE(of, ak5558_i2c_dt_ids);
static struct i2c_driver ak5558_i2c_driver = {
.driver = {
.name = "ak5558",
.of_match_table = of_match_ptr(ak5558_i2c_dt_ids),
.pm = pm_ptr(&ak5558_pm),
},
.probe = 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");
