// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (c) 2023 Rockchip Electronics Co., Ltd.
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/regmap.h>
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#include <sound/core.h>
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#include <sound/control.h>
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#include <sound/soc.h>
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#include "tda7803.h"
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#define TDA7803_SAMPLE_RATE \
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(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
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SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000)
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struct tda7803_priv {
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struct regmap *regmap;
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u32 input_format;
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};
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static int tda7803_startup(struct snd_pcm_substream *substream,
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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 tda7803_priv *tda7803 = snd_soc_component_get_drvdata(component);
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
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int val = 0;
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snd_soc_component_write(component, TDA7803_REG2, DIGITAL_MUTE_OFF |
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CH2_4_UMUTE | CH1_3_UMUTE |
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MUTE_TIME_SETTING_1_45MS);
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snd_soc_component_write(component, TDA7803_REG7, AMPLIEFIR_SWITCH_ON);
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switch (tda7803->input_format) {
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case 0:
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val = INPUT_FORMAT_TDM_8CH_MODEL1;
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break;
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case 1:
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val = INPUT_FORMAT_TDM_8CH_MODEL2;
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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_dai_set_fmt(codec_dai, val);
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return 0;
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}
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static int tda7803_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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int val = 0;
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switch (params_rate(params)) {
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case 44100:
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val = SAMPLE_FREQUENCY_RANGE_44100HZ;
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break;
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case 48000:
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val = SAMPLE_FREQUENCY_RANGE_48000HZ;
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break;
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case 96000:
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val = SAMPLE_FREQUENCY_RANGE_96000HZ;
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break;
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case 192000:
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val = SAMPLE_FREQUENCY_RANGE_192000HZ;
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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_write(component, TDA7803_REG3, val);
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return 0;
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}
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static int tda7803_set_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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snd_soc_component_write(component, TDA7803_REG3, fmt);
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return 0;
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}
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static const struct snd_soc_dai_ops tda7803_ops = {
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.startup = tda7803_startup,
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.hw_params = tda7803_hw_params,
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.set_fmt = tda7803_set_fmt,
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};
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static struct snd_soc_dai_driver tda7803_dai = {
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.name = "tda7803-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 8,
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.rates = TDA7803_SAMPLE_RATE,
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.formats = SNDRV_PCM_FMTBIT_S32_LE |
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SNDRV_PCM_FMTBIT_S24_LE |
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SNDRV_PCM_FMTBIT_S16_LE,
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},
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.ops = &tda7803_ops,
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};
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static const struct snd_soc_component_driver soc_codec_dev_tda7803 = {
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.name = "tda7803",
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};
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static const struct regmap_config tda7803_i2c_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = TDA7803_REGMAX,
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.cache_type = REGCACHE_RBTREE,
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};
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static int tda7803_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct tda7803_priv *tda7803;
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int val;
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tda7803 = devm_kzalloc(&i2c->dev, sizeof(*tda7803), GFP_KERNEL);
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if (!tda7803)
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return -ENOMEM;
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i2c_set_clientdata(i2c, tda7803);
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tda7803->regmap = devm_regmap_init_i2c(i2c, &tda7803_i2c_regmap);
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if (IS_ERR(tda7803->regmap))
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return PTR_ERR(tda7803->regmap);
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if (!device_property_read_u32(&i2c->dev, "st,tda7803-format", &val))
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tda7803->input_format = val;
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return devm_snd_soc_register_component(&i2c->dev,
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&soc_codec_dev_tda7803,
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&tda7803_dai, 1);
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}
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static const struct i2c_device_id tda7803_i2c_id[] = {
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{ "tda7803", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, tda7803_i2c_id);
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static const struct of_device_id tda7803_of_match[] = {
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{ .compatible = "st,tda7803" },
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{ },
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};
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static struct i2c_driver tda7803_i2c_driver = {
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.driver = {
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.name = "tda7803",
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.of_match_table = of_match_ptr(tda7803_of_match),
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},
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.probe = tda7803_i2c_probe,
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.id_table = tda7803_i2c_id,
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};
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module_i2c_driver(tda7803_i2c_driver);
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MODULE_AUTHOR("Jun Zeng <jun.zeng@rock-chips.com>");
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MODULE_DESCRIPTION("TDA7803 audio processor driver");
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MODULE_LICENSE("GPL");
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