root/sound/soc/codecs/cs42l83-i2c.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * cs42l83-i2c.c -- CS42L83 ALSA SoC audio driver for I2C
 *
 * Based on cs42l42-i2c.c:
 *   Copyright 2016, 2022 Cirrus Logic, Inc.
 */

#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/types.h>

#include "cs42l42.h"

static const struct reg_default cs42l83_reg_defaults[] = {
        { CS42L42_FRZ_CTL,                      0x00 },
        { CS42L42_SRC_CTL,                      0x10 },
        { CS42L42_MCLK_CTL,                     0x00 }, /* <- only deviation from CS42L42 */
        { CS42L42_SFTRAMP_RATE,                 0xA4 },
        { CS42L42_SLOW_START_ENABLE,            0x70 },
        { CS42L42_I2C_DEBOUNCE,                 0x88 },
        { CS42L42_I2C_STRETCH,                  0x03 },
        { CS42L42_I2C_TIMEOUT,                  0xB7 },
        { CS42L42_PWR_CTL1,                     0xFF },
        { CS42L42_PWR_CTL2,                     0x84 },
        { CS42L42_PWR_CTL3,                     0x20 },
        { CS42L42_RSENSE_CTL1,                  0x40 },
        { CS42L42_RSENSE_CTL2,                  0x00 },
        { CS42L42_OSC_SWITCH,                   0x00 },
        { CS42L42_RSENSE_CTL3,                  0x1B },
        { CS42L42_TSENSE_CTL,                   0x1B },
        { CS42L42_TSRS_INT_DISABLE,             0x00 },
        { CS42L42_HSDET_CTL1,                   0x77 },
        { CS42L42_HSDET_CTL2,                   0x00 },
        { CS42L42_HS_SWITCH_CTL,                0xF3 },
        { CS42L42_HS_CLAMP_DISABLE,             0x00 },
        { CS42L42_MCLK_SRC_SEL,                 0x00 },
        { CS42L42_SPDIF_CLK_CFG,                0x00 },
        { CS42L42_FSYNC_PW_LOWER,               0x00 },
        { CS42L42_FSYNC_PW_UPPER,               0x00 },
        { CS42L42_FSYNC_P_LOWER,                0xF9 },
        { CS42L42_FSYNC_P_UPPER,                0x00 },
        { CS42L42_ASP_CLK_CFG,                  0x00 },
        { CS42L42_ASP_FRM_CFG,                  0x10 },
        { CS42L42_FS_RATE_EN,                   0x00 },
        { CS42L42_IN_ASRC_CLK,                  0x00 },
        { CS42L42_OUT_ASRC_CLK,                 0x00 },
        { CS42L42_PLL_DIV_CFG1,                 0x00 },
        { CS42L42_ADC_OVFL_INT_MASK,            0x01 },
        { CS42L42_MIXER_INT_MASK,               0x0F },
        { CS42L42_SRC_INT_MASK,                 0x0F },
        { CS42L42_ASP_RX_INT_MASK,              0x1F },
        { CS42L42_ASP_TX_INT_MASK,              0x0F },
        { CS42L42_CODEC_INT_MASK,               0x03 },
        { CS42L42_SRCPL_INT_MASK,               0x7F },
        { CS42L42_VPMON_INT_MASK,               0x01 },
        { CS42L42_PLL_LOCK_INT_MASK,            0x01 },
        { CS42L42_TSRS_PLUG_INT_MASK,           0x0F },
        { CS42L42_PLL_CTL1,                     0x00 },
        { CS42L42_PLL_DIV_FRAC0,                0x00 },
        { CS42L42_PLL_DIV_FRAC1,                0x00 },
        { CS42L42_PLL_DIV_FRAC2,                0x00 },
        { CS42L42_PLL_DIV_INT,                  0x40 },
        { CS42L42_PLL_CTL3,                     0x10 },
        { CS42L42_PLL_CAL_RATIO,                0x80 },
        { CS42L42_PLL_CTL4,                     0x03 },
        { CS42L42_LOAD_DET_EN,                  0x00 },
        { CS42L42_HSBIAS_SC_AUTOCTL,            0x03 },
        { CS42L42_WAKE_CTL,                     0xC0 },
        { CS42L42_ADC_DISABLE_MUTE,             0x00 },
        { CS42L42_TIPSENSE_CTL,                 0x02 },
        { CS42L42_MISC_DET_CTL,                 0x03 },
        { CS42L42_MIC_DET_CTL1,                 0x1F },
        { CS42L42_MIC_DET_CTL2,                 0x2F },
        { CS42L42_DET_INT1_MASK,                0xE0 },
        { CS42L42_DET_INT2_MASK,                0xFF },
        { CS42L42_HS_BIAS_CTL,                  0xC2 },
        { CS42L42_ADC_CTL,                      0x00 },
        { CS42L42_ADC_VOLUME,                   0x00 },
        { CS42L42_ADC_WNF_HPF_CTL,              0x71 },
        { CS42L42_DAC_CTL1,                     0x00 },
        { CS42L42_DAC_CTL2,                     0x02 },
        { CS42L42_HP_CTL,                       0x0D },
        { CS42L42_CLASSH_CTL,                   0x07 },
        { CS42L42_MIXER_CHA_VOL,                0x3F },
        { CS42L42_MIXER_ADC_VOL,                0x3F },
        { CS42L42_MIXER_CHB_VOL,                0x3F },
        { CS42L42_EQ_COEF_IN0,                  0x00 },
        { CS42L42_EQ_COEF_IN1,                  0x00 },
        { CS42L42_EQ_COEF_IN2,                  0x00 },
        { CS42L42_EQ_COEF_IN3,                  0x00 },
        { CS42L42_EQ_COEF_RW,                   0x00 },
        { CS42L42_EQ_COEF_OUT0,                 0x00 },
        { CS42L42_EQ_COEF_OUT1,                 0x00 },
        { CS42L42_EQ_COEF_OUT2,                 0x00 },
        { CS42L42_EQ_COEF_OUT3,                 0x00 },
        { CS42L42_EQ_INIT_STAT,                 0x00 },
        { CS42L42_EQ_START_FILT,                0x00 },
        { CS42L42_EQ_MUTE_CTL,                  0x00 },
        { CS42L42_SP_RX_CH_SEL,                 0x04 },
        { CS42L42_SP_RX_ISOC_CTL,               0x04 },
        { CS42L42_SP_RX_FS,                     0x8C },
        { CS42l42_SPDIF_CH_SEL,                 0x0E },
        { CS42L42_SP_TX_ISOC_CTL,               0x04 },
        { CS42L42_SP_TX_FS,                     0xCC },
        { CS42L42_SPDIF_SW_CTL1,                0x3F },
        { CS42L42_SRC_SDIN_FS,                  0x40 },
        { CS42L42_SRC_SDOUT_FS,                 0x40 },
        { CS42L42_SPDIF_CTL1,                   0x01 },
        { CS42L42_SPDIF_CTL2,                   0x00 },
        { CS42L42_SPDIF_CTL3,                   0x00 },
        { CS42L42_SPDIF_CTL4,                   0x42 },
        { CS42L42_ASP_TX_SZ_EN,                 0x00 },
        { CS42L42_ASP_TX_CH_EN,                 0x00 },
        { CS42L42_ASP_TX_CH_AP_RES,             0x0F },
        { CS42L42_ASP_TX_CH1_BIT_MSB,           0x00 },
        { CS42L42_ASP_TX_CH1_BIT_LSB,           0x00 },
        { CS42L42_ASP_TX_HIZ_DLY_CFG,           0x00 },
        { CS42L42_ASP_TX_CH2_BIT_MSB,           0x00 },
        { CS42L42_ASP_TX_CH2_BIT_LSB,           0x00 },
        { CS42L42_ASP_RX_DAI0_EN,               0x00 },
        { CS42L42_ASP_RX_DAI0_CH1_AP_RES,       0x03 },
        { CS42L42_ASP_RX_DAI0_CH1_BIT_MSB,      0x00 },
        { CS42L42_ASP_RX_DAI0_CH1_BIT_LSB,      0x00 },
        { CS42L42_ASP_RX_DAI0_CH2_AP_RES,       0x03 },
        { CS42L42_ASP_RX_DAI0_CH2_BIT_MSB,      0x00 },
        { CS42L42_ASP_RX_DAI0_CH2_BIT_LSB,      0x00 },
        { CS42L42_ASP_RX_DAI0_CH3_AP_RES,       0x03 },
        { CS42L42_ASP_RX_DAI0_CH3_BIT_MSB,      0x00 },
        { CS42L42_ASP_RX_DAI0_CH3_BIT_LSB,      0x00 },
        { CS42L42_ASP_RX_DAI0_CH4_AP_RES,       0x03 },
        { CS42L42_ASP_RX_DAI0_CH4_BIT_MSB,      0x00 },
        { CS42L42_ASP_RX_DAI0_CH4_BIT_LSB,      0x00 },
        { CS42L42_ASP_RX_DAI1_CH1_AP_RES,       0x03 },
        { CS42L42_ASP_RX_DAI1_CH1_BIT_MSB,      0x00 },
        { CS42L42_ASP_RX_DAI1_CH1_BIT_LSB,      0x00 },
        { CS42L42_ASP_RX_DAI1_CH2_AP_RES,       0x03 },
        { CS42L42_ASP_RX_DAI1_CH2_BIT_MSB,      0x00 },
        { CS42L42_ASP_RX_DAI1_CH2_BIT_LSB,      0x00 },
};

/*
 * This is all the same as for CS42L42 but we
 * replace the on-reset register defaults.
 */
static const struct regmap_config cs42l83_regmap = {
        .reg_bits = 8,
        .val_bits = 8,

        .readable_reg = cs42l42_readable_register,
        .volatile_reg = cs42l42_volatile_register,

        .ranges = &cs42l42_page_range,
        .num_ranges = 1,

        .max_register = CS42L42_MAX_REGISTER,
        .reg_defaults = cs42l83_reg_defaults,
        .num_reg_defaults = ARRAY_SIZE(cs42l83_reg_defaults),
        .cache_type = REGCACHE_MAPLE,

        .use_single_read = true,
        .use_single_write = true,
};

static int cs42l83_i2c_probe(struct i2c_client *i2c_client)
{
        struct device *dev = &i2c_client->dev;
        struct cs42l42_private *cs42l83;
        struct regmap *regmap;
        int ret;

        cs42l83 = devm_kzalloc(dev, sizeof(*cs42l83), GFP_KERNEL);
        if (!cs42l83)
                return -ENOMEM;

        regmap = devm_regmap_init_i2c(i2c_client, &cs42l83_regmap);
        if (IS_ERR(regmap))
                return dev_err_probe(&i2c_client->dev, PTR_ERR(regmap),
                                     "regmap_init() failed\n");

        cs42l83->devid = CS42L83_CHIP_ID;
        cs42l83->dev = dev;
        cs42l83->regmap = regmap;
        cs42l83->irq = i2c_client->irq;

        ret = cs42l42_common_probe(cs42l83, &cs42l42_soc_component, &cs42l42_dai);
        if (ret)
                return ret;

        return cs42l42_init(cs42l83);
}

static void cs42l83_i2c_remove(struct i2c_client *i2c_client)
{
        struct cs42l42_private *cs42l83 = dev_get_drvdata(&i2c_client->dev);

        cs42l42_common_remove(cs42l83);
}

static int cs42l83_i2c_resume(struct device *dev)
{
        int ret;

        ret = cs42l42_resume(dev);
        if (ret)
                return ret;

        cs42l42_resume_restore(dev);

        return 0;
}

static const struct dev_pm_ops cs42l83_i2c_pm_ops = {
        SYSTEM_SLEEP_PM_OPS(cs42l42_suspend, cs42l83_i2c_resume)
};

static const struct of_device_id __maybe_unused cs42l83_of_match[] = {
        { .compatible = "cirrus,cs42l83", },
        {}
};
MODULE_DEVICE_TABLE(of, cs42l83_of_match);

static struct i2c_driver cs42l83_i2c_driver = {
        .driver = {
                .name = "cs42l83",
                .pm = pm_ptr(&cs42l83_i2c_pm_ops),
                .of_match_table = of_match_ptr(cs42l83_of_match),
                },
        .probe = cs42l83_i2c_probe,
        .remove = cs42l83_i2c_remove,
};

module_i2c_driver(cs42l83_i2c_driver);

MODULE_DESCRIPTION("ASoC CS42L83 I2C driver");
MODULE_AUTHOR("Martin PoviĊĦer <povik+lin@cutebit.org>");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("SND_SOC_CS42L42_CORE");