sound/soc/codecs/wm8728.c

File Facts

System

Linux kernel

Corpus path

sound/soc/codecs/wm8728.c

Extension

.c

Size

8192 bytes

Lines

349

Domain

Driver Families

Bucket

sound/soc

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/mod_devicetable.h
• linux/module.h
• linux/moduleparam.h
• linux/init.h
• linux/delay.h
• linux/pm.h
• linux/i2c.h
• linux/platform_device.h
• linux/regmap.h
• linux/spi/spi.h
• linux/slab.h
• sound/core.h
• sound/pcm.h
• sound/pcm_params.h
• sound/soc.h
• sound/initval.h
• sound/tlv.h
• wm8728.h

Detected Declarations

• struct wm8728_priv
• function wm8728_mute
• function wm8728_hw_params
• function wm8728_set_dai_fmt
• function wm8728_set_bias_level
• function wm8728_spi_probe
• function wm8728_i2c_probe
• function wm8728_modinit
• function wm8728_exit
• module init wm8728_modinit

Annotated Snippet

module_init(wm8728_modinit);

static void __exit wm8728_exit(void)
{
#if IS_ENABLED(CONFIG_I2C)
	i2c_del_driver(&wm8728_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
	spi_unregister_driver(&wm8728_spi_driver);
#endif
}
module_exit(wm8728_exit);

MODULE_DESCRIPTION("ASoC WM8728 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/mod_devicetable.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/init.h`, `linux/delay.h`, `linux/pm.h`, `linux/i2c.h`, `linux/platform_device.h`.
• Detected declarations: `struct wm8728_priv`, `function wm8728_mute`, `function wm8728_hw_params`, `function wm8728_set_dai_fmt`, `function wm8728_set_bias_level`, `function wm8728_spi_probe`, `function wm8728_i2c_probe`, `function wm8728_modinit`, `function wm8728_exit`, `module init wm8728_modinit`.
• Atlas domain: Driver Families / sound/soc.
• Implementation status: integration 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.