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// SPDX-License-Identifier: GPL-2.0-only
//
// uda1342.c -- UDA1342 ALSA SoC Codec driver
// Based on the WM87xx drivers by Liam Girdwood and Richard Purdie
//
// Copyright 2007 Dension Audio Systems Ltd.
// Copyright 2024 Loongson Technology Co.,Ltd.
//
// Modifications by Christian Pellegrin <chripell@evolware.org>
// Further cleanup and restructuring by:
// Binbin Zhou <zhoubinbin@loongson.cn>
#include <linux/module.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <linux/pm_runtime.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include "uda1342.h"
#define UDA134X_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S20_3LE)
struct uda1342_priv {
int sysclk;
int dai_fmt;
struct snd_pcm_substream *provider_substream;
struct snd_pcm_substream *consumer_substream;
struct regmap *regmap;
struct i2c_client *i2c;
};
static const struct reg_default uda1342_reg_defaults[] = {
{ 0x00, 0x1042 },
{ 0x01, 0x0000 },
{ 0x10, 0x0088 },
{ 0x11, 0x0000 },
{ 0x12, 0x0000 },
{ 0x20, 0x0080 },
{ 0x21, 0x0080 },
};
static int uda1342_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
unsigned int mask;
unsigned int val = 0;
/* Master mute */
mask = BIT(5);
if (mute)
val = mask;
return regmap_update_bits(uda1342->regmap, 0x10, mask, val);
}
static int uda1342_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
struct snd_pcm_runtime *provider_runtime;
if (uda1342->provider_substream) {
provider_runtime = uda1342->provider_substream->runtime;
snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE, provider_runtime->rate);
snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
provider_runtime->sample_bits);
uda1342->consumer_substream = substream;
} else {
uda1342->provider_substream = substream;
}
return 0;
}
static void uda1342_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
if (uda1342->provider_substream == substream)
uda1342->provider_substream = uda1342->consumer_substream;
uda1342->consumer_substream = NULL;
}
static int uda1342_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 uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
struct device *dev = &uda1342->i2c->dev;
unsigned int hw_params = 0;
if (substream == uda1342->consumer_substream)
return 0;
/* set SYSCLK / fs ratio */
switch (uda1342->sysclk / params_rate(params)) {
case 512:
break;
case 384:
hw_params |= BIT(4);
break;
case 256:
hw_params |= BIT(5);
break;
default:
dev_err(dev, "unsupported frequency\n");
return -EINVAL;
}
/* set DAI format and word length */
switch (uda1342->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
break;
case SND_SOC_DAIFMT_RIGHT_J:
switch (params_width(params)) {
case 16:
hw_params |= BIT(1);
break;
case 18:
hw_params |= BIT(2);
break;
case 20:
hw_params |= BIT(2) | BIT(1);
break;
default:
dev_err(dev, "unsupported format (right)\n");
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_LEFT_J:
hw_params |= BIT(3);
break;
default:
dev_err(dev, "unsupported format\n");
return -EINVAL;
}
return regmap_update_bits(uda1342->regmap, 0x0,
STATUS0_DAIFMT_MASK | STATUS0_SYSCLK_MASK, hw_params);
}
static int uda1342_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
struct device *dev = &uda1342->i2c->dev;
/*
* Anything between 256fs*8Khz and 512fs*48Khz should be acceptable
* because the codec is slave. Of course limitations of the clock
* master (the IIS controller) apply.
* We'll error out on set_hw_params if it's not OK
*/
if ((freq >= (256 * 8000)) && (freq <= (512 * 48000))) {
uda1342->sysclk = freq;
return 0;
}
dev_err(dev, "unsupported sysclk\n");
return -EINVAL;
}
static int uda1342_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
{
struct snd_soc_component *component = codec_dai->component;
struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
/* codec supports only full consumer mode */
if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_BC_FC) {
dev_err(&uda1342->i2c->dev, "unsupported consumer mode.\n");
return -EINVAL;
}
/* We can't setup DAI format here as it depends on the word bit num */
/* so let's just store the value for later */
uda1342->dai_fmt = fmt;
return 0;
}
static const struct snd_kcontrol_new uda1342_snd_controls[] = {
SOC_SINGLE("Master Playback Volume", 0x11, 0, 0x3F, 1),
SOC_SINGLE("Analog1 Volume", 0x12, 0, 0x1F, 1),
};
/* Common DAPM widgets */
static const struct snd_soc_dapm_widget uda1342_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("VINL1"),
SND_SOC_DAPM_INPUT("VINR1"),
SND_SOC_DAPM_INPUT("VINL2"),
SND_SOC_DAPM_INPUT("VINR2"),
SND_SOC_DAPM_DAC("DAC", "Playback", 0, 1, 0),
SND_SOC_DAPM_ADC("ADC", "Capture", 0, 9, 0),
SND_SOC_DAPM_OUTPUT("VOUTL"),
SND_SOC_DAPM_OUTPUT("VOUTR"),
};
static const struct snd_soc_dapm_route uda1342_dapm_routes[] = {
{ "ADC", NULL, "VINL1" },
{ "ADC", NULL, "VINR1" },
{ "ADC", NULL, "VINL2" },
{ "ADC", NULL, "VINR2" },
{ "VOUTL", NULL, "DAC" },
{ "VOUTR", NULL, "DAC" },
};
static const struct snd_soc_dai_ops uda1342_dai_ops = {
.startup = uda1342_startup,
.shutdown = uda1342_shutdown,
.hw_params = uda1342_hw_params,
.mute_stream = uda1342_mute,
.set_sysclk = uda1342_set_dai_sysclk,
.set_fmt = uda1342_set_dai_fmt,
};
static struct snd_soc_dai_driver uda1342_dai = {
.name = "uda1342-hifi",
/* playback capabilities */
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = UDA134X_FORMATS,
},
/* capture capabilities */
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = UDA134X_FORMATS,
},
/* pcm operations */
.ops = &uda1342_dai_ops,
};
static const struct snd_soc_component_driver soc_component_dev_uda1342 = {
.controls = uda1342_snd_controls,
.num_controls = ARRAY_SIZE(uda1342_snd_controls),
.dapm_widgets = uda1342_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(uda1342_dapm_widgets),
.dapm_routes = uda1342_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(uda1342_dapm_routes),
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct regmap_config uda1342_regmap = {
.reg_bits = 8,
.val_bits = 16,
.max_register = 0x21,
.reg_defaults = uda1342_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(uda1342_reg_defaults),
.cache_type = REGCACHE_MAPLE,
};
static int uda1342_i2c_probe(struct i2c_client *i2c)
{
struct uda1342_priv *uda1342;
uda1342 = devm_kzalloc(&i2c->dev, sizeof(*uda1342), GFP_KERNEL);
if (!uda1342)
return -ENOMEM;
uda1342->regmap = devm_regmap_init_i2c(i2c, &uda1342_regmap);
if (IS_ERR(uda1342->regmap))
return PTR_ERR(uda1342->regmap);
i2c_set_clientdata(i2c, uda1342);
uda1342->i2c = i2c;
return devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_uda1342,
&uda1342_dai, 1);
}
static int uda1342_suspend(struct device *dev)
{
struct uda1342_priv *uda1342 = dev_get_drvdata(dev);
regcache_cache_only(uda1342->regmap, true);
return 0;
}
static int uda1342_resume(struct device *dev)
{
struct uda1342_priv *uda1342 = dev_get_drvdata(dev);
regcache_mark_dirty(uda1342->regmap);
regcache_sync(uda1342->regmap);
return 0;
}
static DEFINE_RUNTIME_DEV_PM_OPS(uda1342_pm_ops,
uda1342_suspend, uda1342_resume, NULL);
static const struct i2c_device_id uda1342_i2c_id[] = {
{ "uda1342", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, uda1342_i2c_id);
static const struct of_device_id uda1342_of_match[] = {
{ .compatible = "nxp,uda1342" },
{ }
};
MODULE_DEVICE_TABLE(of, uda1342_of_match);
static struct i2c_driver uda1342_i2c_driver = {
.driver = {
.name = "uda1342",
.of_match_table = uda1342_of_match,
.pm = pm_sleep_ptr(&uda1342_pm_ops),
},
.probe = uda1342_i2c_probe,
.id_table = uda1342_i2c_id,
};
module_i2c_driver(uda1342_i2c_driver);
MODULE_DESCRIPTION("UDA1342 ALSA soc codec driver");
MODULE_AUTHOR("Zoltan Devai, Christian Pellegrin <chripell@evolware.org>");
MODULE_AUTHOR("Binbin Zhou <zhoubinbin@loongson.cn>");
MODULE_LICENSE("GPL");
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