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-rw-r--r--sound/soc/codecs/ak5558.c416
1 files changed, 416 insertions, 0 deletions
diff --git a/sound/soc/codecs/ak5558.c b/sound/soc/codecs/ak5558.c
new file mode 100644
index 000000000..dda165b14
--- /dev/null
+++ b/sound/soc/codecs/ak5558.c
@@ -0,0 +1,416 @@
+// 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, 1);
+ 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, 0);
+ 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);
+}
+
+static 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)
+};
+
+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,
+ .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"},
+ { }
+};
+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 = &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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 14:23:58 +0000