1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * cs42l42-i2c.c -- CS42L42 ALSA SoC audio driver for I2C
  4 *
  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");