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439 lines
11 KiB
439 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// Audio driver for AK5558 ADC |
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// |
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// Copyright (C) 2015 Asahi Kasei Microdevices Corporation |
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// Copyright 2018 NXP |
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#include <linux/delay.h> |
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#include <linux/gpio/consumer.h> |
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#include <linux/i2c.h> |
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#include <linux/module.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/regmap.h> |
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#include <linux/regulator/consumer.h> |
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#include <linux/slab.h> |
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#include <sound/initval.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/tlv.h> |
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#include "ak5558.h" |
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#define AK5558_NUM_SUPPLIES 2 |
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static const char *ak5558_supply_names[AK5558_NUM_SUPPLIES] = { |
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"DVDD", |
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"AVDD", |
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}; |
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/* AK5558 Codec Private Data */ |
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struct ak5558_priv { |
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struct regulator_bulk_data supplies[AK5558_NUM_SUPPLIES]; |
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struct snd_soc_component component; |
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struct regmap *regmap; |
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struct i2c_client *i2c; |
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struct gpio_desc *reset_gpiod; /* Reset & Power down GPIO */ |
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int slots; |
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int slot_width; |
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}; |
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/* ak5558 register cache & default register settings */ |
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static const struct reg_default ak5558_reg[] = { |
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{ 0x0, 0xFF }, /* 0x00 AK5558_00_POWER_MANAGEMENT1 */ |
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{ 0x1, 0x01 }, /* 0x01 AK5558_01_POWER_MANAGEMENT2 */ |
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{ 0x2, 0x01 }, /* 0x02 AK5558_02_CONTROL1 */ |
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{ 0x3, 0x00 }, /* 0x03 AK5558_03_CONTROL2 */ |
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{ 0x4, 0x00 }, /* 0x04 AK5558_04_CONTROL3 */ |
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{ 0x5, 0x00 } /* 0x05 AK5558_05_DSD */ |
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}; |
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static const char * const mono_texts[] = { |
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"8 Slot", "2 Slot", "4 Slot", "1 Slot", |
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}; |
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static const struct soc_enum ak5558_mono_enum[] = { |
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SOC_ENUM_SINGLE(AK5558_01_POWER_MANAGEMENT2, 1, |
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ARRAY_SIZE(mono_texts), mono_texts), |
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}; |
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static const char * const digfil_texts[] = { |
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"Sharp Roll-Off", "Show Roll-Off", |
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"Short Delay Sharp Roll-Off", "Short Delay Show Roll-Off", |
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}; |
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static const struct soc_enum ak5558_adcset_enum[] = { |
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SOC_ENUM_SINGLE(AK5558_04_CONTROL3, 0, |
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ARRAY_SIZE(digfil_texts), digfil_texts), |
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}; |
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static const struct snd_kcontrol_new ak5558_snd_controls[] = { |
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SOC_ENUM("AK5558 Monaural Mode", ak5558_mono_enum[0]), |
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SOC_ENUM("AK5558 Digital Filter", ak5558_adcset_enum[0]), |
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}; |
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static const struct snd_soc_dapm_widget ak5558_dapm_widgets[] = { |
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/* Analog Input */ |
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SND_SOC_DAPM_INPUT("AIN1"), |
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SND_SOC_DAPM_INPUT("AIN2"), |
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SND_SOC_DAPM_INPUT("AIN3"), |
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SND_SOC_DAPM_INPUT("AIN4"), |
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SND_SOC_DAPM_INPUT("AIN5"), |
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SND_SOC_DAPM_INPUT("AIN6"), |
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SND_SOC_DAPM_INPUT("AIN7"), |
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SND_SOC_DAPM_INPUT("AIN8"), |
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SND_SOC_DAPM_ADC("ADC Ch1", NULL, AK5558_00_POWER_MANAGEMENT1, 0, 0), |
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SND_SOC_DAPM_ADC("ADC Ch2", NULL, AK5558_00_POWER_MANAGEMENT1, 1, 0), |
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SND_SOC_DAPM_ADC("ADC Ch3", NULL, AK5558_00_POWER_MANAGEMENT1, 2, 0), |
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SND_SOC_DAPM_ADC("ADC Ch4", NULL, AK5558_00_POWER_MANAGEMENT1, 3, 0), |
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SND_SOC_DAPM_ADC("ADC Ch5", NULL, AK5558_00_POWER_MANAGEMENT1, 4, 0), |
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SND_SOC_DAPM_ADC("ADC Ch6", NULL, AK5558_00_POWER_MANAGEMENT1, 5, 0), |
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SND_SOC_DAPM_ADC("ADC Ch7", NULL, AK5558_00_POWER_MANAGEMENT1, 6, 0), |
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SND_SOC_DAPM_ADC("ADC Ch8", NULL, AK5558_00_POWER_MANAGEMENT1, 7, 0), |
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SND_SOC_DAPM_AIF_OUT("SDTO", "Capture", 0, SND_SOC_NOPM, 0, 0), |
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}; |
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static const struct snd_soc_dapm_route ak5558_intercon[] = { |
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{"ADC Ch1", NULL, "AIN1"}, |
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{"SDTO", NULL, "ADC Ch1"}, |
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{"ADC Ch2", NULL, "AIN2"}, |
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{"SDTO", NULL, "ADC Ch2"}, |
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{"ADC Ch3", NULL, "AIN3"}, |
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{"SDTO", NULL, "ADC Ch3"}, |
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{"ADC Ch4", NULL, "AIN4"}, |
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{"SDTO", NULL, "ADC Ch4"}, |
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{"ADC Ch5", NULL, "AIN5"}, |
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{"SDTO", NULL, "ADC Ch5"}, |
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{"ADC Ch6", NULL, "AIN6"}, |
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{"SDTO", NULL, "ADC Ch6"}, |
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{"ADC Ch7", NULL, "AIN7"}, |
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{"SDTO", NULL, "ADC Ch7"}, |
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{"ADC Ch8", NULL, "AIN8"}, |
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{"SDTO", NULL, "ADC Ch8"}, |
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}; |
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static int ak5558_set_mcki(struct snd_soc_component *component) |
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{ |
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return snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_CKS, |
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AK5558_CKS_AUTO); |
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} |
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static int ak5558_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params, |
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struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); |
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u8 bits; |
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int pcm_width = max(params_physical_width(params), ak5558->slot_width); |
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switch (pcm_width) { |
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case 16: |
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bits = AK5558_DIF_24BIT_MODE; |
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break; |
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case 32: |
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bits = AK5558_DIF_32BIT_MODE; |
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break; |
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default: |
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return -EINVAL; |
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} |
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snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_BITS, bits); |
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return 0; |
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} |
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static int ak5558_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
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{ |
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struct snd_soc_component *component = dai->component; |
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u8 format; |
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBS_CFS: |
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break; |
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case SND_SOC_DAIFMT_CBM_CFM: |
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break; |
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case SND_SOC_DAIFMT_CBS_CFM: |
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case SND_SOC_DAIFMT_CBM_CFS: |
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default: |
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dev_err(dai->dev, "Clock mode unsupported"); |
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return -EINVAL; |
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} |
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/* set master/slave audio interface */ |
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
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case SND_SOC_DAIFMT_I2S: |
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format = AK5558_DIF_I2S_MODE; |
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break; |
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case SND_SOC_DAIFMT_LEFT_J: |
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format = AK5558_DIF_MSB_MODE; |
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break; |
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case SND_SOC_DAIFMT_DSP_B: |
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format = AK5558_DIF_MSB_MODE; |
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break; |
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default: |
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return -EINVAL; |
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} |
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snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_DIF, format); |
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return 0; |
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} |
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static int ak5558_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, |
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unsigned int rx_mask, int slots, |
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int slot_width) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); |
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int tdm_mode; |
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ak5558->slots = slots; |
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ak5558->slot_width = slot_width; |
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switch (slots * slot_width) { |
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case 128: |
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tdm_mode = AK5558_MODE_TDM128; |
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break; |
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case 256: |
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tdm_mode = AK5558_MODE_TDM256; |
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break; |
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case 512: |
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tdm_mode = AK5558_MODE_TDM512; |
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break; |
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default: |
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tdm_mode = AK5558_MODE_NORMAL; |
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break; |
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} |
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snd_soc_component_update_bits(component, AK5558_03_CONTROL2, AK5558_MODE_BITS, |
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tdm_mode); |
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return 0; |
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} |
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#define AK5558_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ |
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SNDRV_PCM_FMTBIT_S24_LE |\ |
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SNDRV_PCM_FMTBIT_S32_LE) |
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static const unsigned int ak5558_rates[] = { |
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8000, 11025, 16000, 22050, |
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32000, 44100, 48000, 88200, |
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96000, 176400, 192000, 352800, |
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384000, 705600, 768000, 1411200, |
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2822400, |
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}; |
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static const struct snd_pcm_hw_constraint_list ak5558_rate_constraints = { |
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.count = ARRAY_SIZE(ak5558_rates), |
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.list = ak5558_rates, |
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}; |
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static int ak5558_startup(struct snd_pcm_substream *substream, |
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struct snd_soc_dai *dai) |
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{ |
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return snd_pcm_hw_constraint_list(substream->runtime, 0, |
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SNDRV_PCM_HW_PARAM_RATE, |
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&ak5558_rate_constraints); |
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} |
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static const struct snd_soc_dai_ops ak5558_dai_ops = { |
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.startup = ak5558_startup, |
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.hw_params = ak5558_hw_params, |
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.set_fmt = ak5558_set_dai_fmt, |
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.set_tdm_slot = ak5558_set_tdm_slot, |
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}; |
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static struct snd_soc_dai_driver ak5558_dai = { |
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.name = "ak5558-aif", |
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.capture = { |
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.stream_name = "Capture", |
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.channels_min = 1, |
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.channels_max = 8, |
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.rates = SNDRV_PCM_RATE_KNOT, |
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.formats = AK5558_FORMATS, |
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}, |
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.ops = &ak5558_dai_ops, |
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}; |
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static void ak5558_power_off(struct ak5558_priv *ak5558) |
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{ |
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if (!ak5558->reset_gpiod) |
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return; |
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gpiod_set_value_cansleep(ak5558->reset_gpiod, 1); |
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usleep_range(1000, 2000); |
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} |
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static void ak5558_power_on(struct ak5558_priv *ak5558) |
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{ |
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if (!ak5558->reset_gpiod) |
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return; |
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gpiod_set_value_cansleep(ak5558->reset_gpiod, 0); |
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usleep_range(1000, 2000); |
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} |
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static int ak5558_probe(struct snd_soc_component *component) |
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{ |
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struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); |
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ak5558_power_on(ak5558); |
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return ak5558_set_mcki(component); |
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} |
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static void ak5558_remove(struct snd_soc_component *component) |
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{ |
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struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); |
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ak5558_power_off(ak5558); |
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} |
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static int __maybe_unused ak5558_runtime_suspend(struct device *dev) |
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{ |
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struct ak5558_priv *ak5558 = dev_get_drvdata(dev); |
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regcache_cache_only(ak5558->regmap, true); |
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ak5558_power_off(ak5558); |
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regulator_bulk_disable(ARRAY_SIZE(ak5558->supplies), |
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ak5558->supplies); |
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return 0; |
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} |
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static int __maybe_unused ak5558_runtime_resume(struct device *dev) |
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{ |
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struct ak5558_priv *ak5558 = dev_get_drvdata(dev); |
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int ret; |
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ret = regulator_bulk_enable(ARRAY_SIZE(ak5558->supplies), |
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ak5558->supplies); |
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if (ret != 0) { |
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dev_err(dev, "Failed to enable supplies: %d\n", ret); |
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return ret; |
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} |
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ak5558_power_off(ak5558); |
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ak5558_power_on(ak5558); |
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regcache_cache_only(ak5558->regmap, false); |
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regcache_mark_dirty(ak5558->regmap); |
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return regcache_sync(ak5558->regmap); |
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} |
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static const struct dev_pm_ops ak5558_pm = { |
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SET_RUNTIME_PM_OPS(ak5558_runtime_suspend, ak5558_runtime_resume, NULL) |
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SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, |
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pm_runtime_force_resume) |
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}; |
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static const struct snd_soc_component_driver soc_codec_dev_ak5558 = { |
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.probe = ak5558_probe, |
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.remove = ak5558_remove, |
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.controls = ak5558_snd_controls, |
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.num_controls = ARRAY_SIZE(ak5558_snd_controls), |
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.dapm_widgets = ak5558_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(ak5558_dapm_widgets), |
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.dapm_routes = ak5558_intercon, |
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.num_dapm_routes = ARRAY_SIZE(ak5558_intercon), |
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.idle_bias_on = 1, |
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.use_pmdown_time = 1, |
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.endianness = 1, |
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.non_legacy_dai_naming = 1, |
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}; |
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static const struct regmap_config ak5558_regmap = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = AK5558_05_DSD, |
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.reg_defaults = ak5558_reg, |
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.num_reg_defaults = ARRAY_SIZE(ak5558_reg), |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static int ak5558_i2c_probe(struct i2c_client *i2c) |
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{ |
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struct ak5558_priv *ak5558; |
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int ret = 0; |
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int i; |
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ak5558 = devm_kzalloc(&i2c->dev, sizeof(*ak5558), GFP_KERNEL); |
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if (!ak5558) |
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return -ENOMEM; |
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ak5558->regmap = devm_regmap_init_i2c(i2c, &ak5558_regmap); |
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if (IS_ERR(ak5558->regmap)) |
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return PTR_ERR(ak5558->regmap); |
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i2c_set_clientdata(i2c, ak5558); |
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ak5558->i2c = i2c; |
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ak5558->reset_gpiod = devm_gpiod_get_optional(&i2c->dev, "reset", |
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GPIOD_OUT_LOW); |
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if (IS_ERR(ak5558->reset_gpiod)) |
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return PTR_ERR(ak5558->reset_gpiod); |
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for (i = 0; i < ARRAY_SIZE(ak5558->supplies); i++) |
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ak5558->supplies[i].supply = ak5558_supply_names[i]; |
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ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(ak5558->supplies), |
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ak5558->supplies); |
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if (ret != 0) { |
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dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); |
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return ret; |
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} |
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ret = devm_snd_soc_register_component(&i2c->dev, |
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&soc_codec_dev_ak5558, |
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&ak5558_dai, 1); |
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if (ret) |
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return ret; |
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pm_runtime_enable(&i2c->dev); |
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regcache_cache_only(ak5558->regmap, true); |
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return 0; |
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} |
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static int ak5558_i2c_remove(struct i2c_client *i2c) |
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{ |
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pm_runtime_disable(&i2c->dev); |
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return 0; |
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} |
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static const struct of_device_id ak5558_i2c_dt_ids[] __maybe_unused = { |
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{ .compatible = "asahi-kasei,ak5558"}, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, ak5558_i2c_dt_ids); |
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static struct i2c_driver ak5558_i2c_driver = { |
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.driver = { |
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.name = "ak5558", |
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.of_match_table = of_match_ptr(ak5558_i2c_dt_ids), |
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.pm = &ak5558_pm, |
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}, |
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.probe_new = ak5558_i2c_probe, |
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.remove = ak5558_i2c_remove, |
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}; |
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module_i2c_driver(ak5558_i2c_driver); |
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MODULE_AUTHOR("Junichi Wakasugi <[email protected]>"); |
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MODULE_AUTHOR("Mihai Serban <[email protected]>"); |
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MODULE_DESCRIPTION("ASoC AK5558 ADC driver"); |
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MODULE_LICENSE("GPL v2");
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