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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * cs42l42-i2c.c -- CS42L42 ALSA SoC audio driver for I2C4 *5 * Copyright 2016, 2022 Cirrus Logic, Inc.6 */7 8#include <linux/i2c.h>9#include <linux/module.h>10#include <linux/regmap.h>11#include <linux/slab.h>12#include <linux/types.h>13 14#include "cs42l42.h"15 16static int cs42l42_i2c_probe(struct i2c_client *i2c_client)17{18 struct device *dev = &i2c_client->dev;19 struct cs42l42_private *cs42l42;20 struct regmap *regmap;21 int ret;22 23 cs42l42 = devm_kzalloc(dev, sizeof(*cs42l42), GFP_KERNEL);24 if (!cs42l42)25 return -ENOMEM;26 27 regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap);28 if (IS_ERR(regmap))29 return dev_err_probe(&i2c_client->dev, PTR_ERR(regmap),30 "regmap_init() failed\n");31 32 cs42l42->devid = CS42L42_CHIP_ID;33 cs42l42->dev = dev;34 cs42l42->regmap = regmap;35 cs42l42->irq = i2c_client->irq;36 37 ret = cs42l42_common_probe(cs42l42, &cs42l42_soc_component, &cs42l42_dai);38 if (ret)39 return ret;40 41 return cs42l42_init(cs42l42);42}43 44static void cs42l42_i2c_remove(struct i2c_client *i2c_client)45{46 struct cs42l42_private *cs42l42 = dev_get_drvdata(&i2c_client->dev);47 48 cs42l42_common_remove(cs42l42);49}50 51static int __maybe_unused cs42l42_i2c_resume(struct device *dev)52{53 int ret;54 55 ret = cs42l42_resume(dev);56 if (ret)57 return ret;58 59 cs42l42_resume_restore(dev);60 61 return 0;62}63 64static const struct dev_pm_ops cs42l42_i2c_pm_ops = {65 SET_SYSTEM_SLEEP_PM_OPS(cs42l42_suspend, cs42l42_i2c_resume)66};67 68static const struct of_device_id __maybe_unused cs42l42_of_match[] = {69 { .compatible = "cirrus,cs42l42", },70 {}71};72MODULE_DEVICE_TABLE(of, cs42l42_of_match);73 74static const struct acpi_device_id __maybe_unused cs42l42_acpi_match[] = {75 {"10134242", 0,},76 {}77};78MODULE_DEVICE_TABLE(acpi, cs42l42_acpi_match);79 80static const struct i2c_device_id cs42l42_id[] = {81 {"cs42l42"},82 {}83};84 85MODULE_DEVICE_TABLE(i2c, cs42l42_id);86 87static struct i2c_driver cs42l42_i2c_driver = {88 .driver = {89 .name = "cs42l42",90 .pm = &cs42l42_i2c_pm_ops,91 .of_match_table = of_match_ptr(cs42l42_of_match),92 .acpi_match_table = ACPI_PTR(cs42l42_acpi_match),93 },94 .id_table = cs42l42_id,95 .probe = cs42l42_i2c_probe,96 .remove = cs42l42_i2c_remove,97};98 99module_i2c_driver(cs42l42_i2c_driver);100 101MODULE_DESCRIPTION("ASoC CS42L42 I2C driver");102MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");103MODULE_LICENSE("GPL");104MODULE_IMPORT_NS(SND_SOC_CS42L42_CORE);105