sound/soc/codecs/pcm179x-spi.c
Source file repositories/reference/linux-study-clean/sound/soc/codecs/pcm179x-spi.c
File Facts
- System
- Linux kernel
- Corpus path
sound/soc/codecs/pcm179x-spi.c- Extension
.c- Size
- 1325 bytes
- Lines
- 59
- 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/module.hlinux/of.hlinux/spi/spi.hlinux/regmap.hpcm179x.h
Detected Declarations
function Copyright
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PCM179X ASoC SPI driver
*
* Copyright (c) Amarula Solutions B.V. 2013
*
* Michael Trimarchi <michael@amarulasolutions.com>
*/
#include <linux/module.h>
#include <linux/of.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include "pcm179x.h"
static int pcm179x_spi_probe(struct spi_device *spi)
{
struct regmap *regmap;
int ret;
regmap = devm_regmap_init_spi(spi, &pcm179x_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
dev_err(&spi->dev, "Failed to allocate regmap: %d\n", ret);
return ret;
}
return pcm179x_common_init(&spi->dev, regmap);
}
static const struct of_device_id pcm179x_of_match[] __maybe_unused = {
{ .compatible = "ti,pcm1792a", },
{ }
};
MODULE_DEVICE_TABLE(of, pcm179x_of_match);
static const struct spi_device_id pcm179x_spi_ids[] = {
{ "pcm1792a", 0 },
{ "pcm179x", 0 },
{ },
};
MODULE_DEVICE_TABLE(spi, pcm179x_spi_ids);
static struct spi_driver pcm179x_spi_driver = {
.driver = {
.name = "pcm179x",
.of_match_table = of_match_ptr(pcm179x_of_match),
},
.id_table = pcm179x_spi_ids,
.probe = pcm179x_spi_probe,
};
module_spi_driver(pcm179x_spi_driver);
MODULE_DESCRIPTION("ASoC PCM179X SPI driver");
MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
MODULE_LICENSE("GPL");
Annotation
- Immediate include surface: `linux/module.h`, `linux/of.h`, `linux/spi/spi.h`, `linux/regmap.h`, `pcm179x.h`.
- Detected declarations: `function Copyright`.
- 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.