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.
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/i2c.hlinux/module.hsound/soc.hcs42l51.h
Detected Declarations
function cs42l51_i2c_probefunction cs42l51_i2c_remove
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
- Immediate include surface: `linux/i2c.h`, `linux/module.h`, `sound/soc.h`, `cs42l51.h`.
- Detected declarations: `function cs42l51_i2c_probe`, `function cs42l51_i2c_remove`.
- Atlas domain: Driver Families / sound/soc.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.