sound/drivers/mpu401/mpu401.c

File Facts

System

Linux kernel

Corpus path

sound/drivers/mpu401/mpu401.c

Extension

.c

Size

6464 bytes

Lines

252

Domain

Driver Families

Bucket

sound/drivers

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/pnp.h
• linux/err.h
• linux/platform_device.h
• linux/module.h
• sound/core.h
• sound/mpu401.h
• sound/initval.h

Detected Declarations

• function snd_mpu401_create
• function snd_mpu401_probe
• function snd_mpu401_pnp
• function snd_mpu401_pnp_probe
• function snd_mpu401_unregister_all
• function alsa_card_mpu401_init
• function alsa_card_mpu401_exit
• module init alsa_card_mpu401_init

Annotated Snippet

module_init(alsa_card_mpu401_init)
module_exit(alsa_card_mpu401_exit)

Annotation

• Immediate include surface: `linux/init.h`, `linux/pnp.h`, `linux/err.h`, `linux/platform_device.h`, `linux/module.h`, `sound/core.h`, `sound/mpu401.h`, `sound/initval.h`.
• Detected declarations: `function snd_mpu401_create`, `function snd_mpu401_probe`, `function snd_mpu401_pnp`, `function snd_mpu401_pnp_probe`, `function snd_mpu401_unregister_all`, `function alsa_card_mpu401_init`, `function alsa_card_mpu401_exit`, `module init alsa_card_mpu401_init`.
• Atlas domain: Driver Families / sound/drivers.
• 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.