sound/soc/codecs/cs42l51-i2c.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/cs42l51-i2c.c

File Facts

System
Linux kernel
Corpus path
sound/soc/codecs/cs42l51-i2c.c
Extension
.c
Size
1372 bytes
Lines
62
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * cs42l56.c -- CS42L51 ALSA SoC I2C audio driver
 *
 * Copyright 2014 CirrusLogic, Inc.
 *
 * Author: Brian Austin <brian.austin@cirrus.com>
 */

#include <linux/i2c.h>
#include <linux/module.h>
#include <sound/soc.h>

#include "cs42l51.h"

static const struct i2c_device_id cs42l51_i2c_id[] = {
	{ .name = "cs42l51" },
	{ }
};
MODULE_DEVICE_TABLE(i2c, cs42l51_i2c_id);

static const struct of_device_id cs42l51_of_match[] = {
	{ .compatible = "cirrus,cs42l51", },
	{ }
};
MODULE_DEVICE_TABLE(of, cs42l51_of_match);

static int cs42l51_i2c_probe(struct i2c_client *i2c)
{
	struct regmap_config config;

	config = cs42l51_regmap;

	return cs42l51_probe(&i2c->dev, devm_regmap_init_i2c(i2c, &config));
}

static void cs42l51_i2c_remove(struct i2c_client *i2c)
{
	cs42l51_remove(&i2c->dev);
}

static const struct dev_pm_ops cs42l51_pm_ops = {
	SYSTEM_SLEEP_PM_OPS(cs42l51_suspend, cs42l51_resume)
};

static struct i2c_driver cs42l51_i2c_driver = {
	.driver = {
		.name = "cs42l51",
		.of_match_table = cs42l51_of_match,
		.pm = &cs42l51_pm_ops,
	},
	.probe = cs42l51_i2c_probe,
	.remove = cs42l51_i2c_remove,
	.id_table = cs42l51_i2c_id,
};

module_i2c_driver(cs42l51_i2c_driver);

MODULE_DESCRIPTION("ASoC CS42L51 I2C Driver");
MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
MODULE_LICENSE("GPL");

Annotation

Implementation Notes