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// SPDX-License-Identifier: GPL-2.0
/*
* CS42L43 I2C driver
*
* Copyright (C) 2022-2023 Cirrus Logic, Inc. and
* Cirrus Logic International Semiconductor Ltd.
*/
#include <linux/array_size.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/mfd/cs42l43.h>
#include <linux/mfd/cs42l43-regs.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/regmap.h>
#include "cs42l43.h"
static const struct regmap_config cs42l43_i2c_regmap = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.reg_format_endian = REGMAP_ENDIAN_BIG,
.val_format_endian = REGMAP_ENDIAN_BIG,
.max_register = CS42L43_MCU_RAM_MAX,
.readable_reg = cs42l43_readable_register,
.volatile_reg = cs42l43_volatile_register,
.precious_reg = cs42l43_precious_register,
.cache_type = REGCACHE_MAPLE,
.reg_defaults = cs42l43_reg_default,
.num_reg_defaults = ARRAY_SIZE(cs42l43_reg_default),
};
static int cs42l43_i2c_probe(struct i2c_client *i2c)
{
struct cs42l43 *cs42l43;
cs42l43 = devm_kzalloc(&i2c->dev, sizeof(*cs42l43), GFP_KERNEL);
if (!cs42l43)
return -ENOMEM;
cs42l43->dev = &i2c->dev;
cs42l43->irq = i2c->irq;
/* A device on an I2C is always attached by definition. */
cs42l43->attached = true;
cs42l43->regmap = devm_regmap_init_i2c(i2c, &cs42l43_i2c_regmap);
if (IS_ERR(cs42l43->regmap))
return dev_err_probe(cs42l43->dev, PTR_ERR(cs42l43->regmap),
"Failed to allocate regmap\n");
return cs42l43_dev_probe(cs42l43);
}
static void cs42l43_i2c_remove(struct i2c_client *i2c)
{
struct cs42l43 *cs42l43 = dev_get_drvdata(&i2c->dev);
cs42l43_dev_remove(cs42l43);
}
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id cs42l43_of_match[] = {
{ .compatible = "cirrus,cs42l43", },
{}
};
MODULE_DEVICE_TABLE(of, cs42l43_of_match);
#endif
#if IS_ENABLED(CONFIG_ACPI)
static const struct acpi_device_id cs42l43_acpi_match[] = {
{ "CSC4243", 0 },
{}
};
MODULE_DEVICE_TABLE(acpi, cs42l43_acpi_match);
#endif
static struct i2c_driver cs42l43_i2c_driver = {
.driver = {
.name = "cs42l43",
.pm = pm_ptr(&cs42l43_pm_ops),
.of_match_table = of_match_ptr(cs42l43_of_match),
.acpi_match_table = ACPI_PTR(cs42l43_acpi_match),
},
.probe = cs42l43_i2c_probe,
.remove = cs42l43_i2c_remove,
};
module_i2c_driver(cs42l43_i2c_driver);
MODULE_IMPORT_NS("MFD_CS42L43");
MODULE_DESCRIPTION("CS42L43 I2C Driver");
MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.cirrus.com>");
MODULE_LICENSE("GPL");
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