sound/soc/codecs/cs35l56-i2c.c

// SPDX-License-Identifier: GPL-2.0-only
//
// CS35L56 ALSA SoC audio driver I2C binding
//
// Copyright (C) 2023 Cirrus Logic, Inc. and
//                    Cirrus Logic International Semiconductor Ltd.

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

#include "cs35l56.h"

static int cs35l56_i2c_probe(struct i2c_client *client)
{
	unsigned int id = (u32)(uintptr_t)i2c_get_match_data(client);
	struct cs35l56_private *cs35l56;
	struct device *dev = &client->dev;
	const struct regmap_config *regmap_config;
	int ret;

	cs35l56 = devm_kzalloc(dev, sizeof(struct cs35l56_private), GFP_KERNEL);
	if (!cs35l56)
		return -ENOMEM;

	cs35l56->base.dev = dev;
	cs35l56->base.can_hibernate = true;

	i2c_set_clientdata(client, cs35l56);

	switch (id) {
	case 0x3556:
		regmap_config = &cs35l56_regmap_i2c;
		cs35l56->base.type = 0x56;
		break;
	case 0x3563:
		regmap_config = &cs35l63_regmap_i2c;
		cs35l56->base.type = 0x63;
		break;
	default:
		return -ENODEV;
	}

	cs35l56->base.regmap = devm_regmap_init_i2c(client, regmap_config);
	if (IS_ERR(cs35l56->base.regmap)) {
		ret = PTR_ERR(cs35l56->base.regmap);
		return dev_err_probe(cs35l56->base.dev, ret, "Failed to allocate register map\n");
	}

	return cs35l56_common_probe(cs35l56, client->irq);
}

static void cs35l56_i2c_remove(struct i2c_client *client)
{
	struct cs35l56_private *cs35l56 = i2c_get_clientdata(client);

	cs35l56_remove(cs35l56);
}

static const struct i2c_device_id cs35l56_id_i2c[] = {
	{ .name = "cs35l56", .driver_data = 0x3556 },
	{ .name = "cs35l63", .driver_data = 0x3563 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c);

#ifdef CONFIG_ACPI
static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
	{ "CSC355C", 0x3556 },
	{ "CSC356C", 0x3563 },
	{},
};
MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
#endif

static struct i2c_driver cs35l56_i2c_driver = {
	.driver = {
		.name		= "cs35l56",
		.pm = pm_ptr(&cs35l56_pm_ops_i2c_spi),
		.acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
	},
	.id_table	= cs35l56_id_i2c,
	.probe		= cs35l56_i2c_probe,
	.remove		= cs35l56_i2c_remove,
};

module_i2c_driver(cs35l56_i2c_driver);

MODULE_DESCRIPTION("ASoC CS35L56 I2C driver");
MODULE_IMPORT_NS("SND_SOC_CS35L56_CORE");
MODULE_IMPORT_NS("SND_SOC_CS35L56_SHARED");
MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
MODULE_LICENSE("GPL");