diff options
Diffstat (limited to 'sound/soc/codecs/ak5558.c')
| -rw-r--r-- | sound/soc/codecs/ak5558.c | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/sound/soc/codecs/ak5558.c b/sound/soc/codecs/ak5558.c new file mode 100644 index 000000000000..f4ed5cc40661 --- /dev/null +++ b/sound/soc/codecs/ak5558.c @@ -0,0 +1,415 @@ +// 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_component component; + 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_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); + + /* set master/slave audio interface */ + bits = snd_soc_component_read32(component, 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_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_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_component_read32(component, 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_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 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_component *component) +{ + struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); + + ak5558_power_on(ak5558); + 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_power_off(ak5558); +} + +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_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, + .non_legacy_dai_naming = 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; + + 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 = devm_snd_soc_register_component(&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) +{ + 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"); |