sound/drivers/pcsp/pcsp.c

File Facts

System

Linux kernel

Corpus path

sound/drivers/pcsp/pcsp.c

Extension

.c

Size

4963 bytes

Lines

217

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/module.h
• linux/platform_device.h
• sound/core.h
• sound/initval.h
• sound/pcm.h
• linux/input.h
• linux/delay.h
• linux/bitops.h
• linux/mm.h
• pcsp_input.h
• pcsp.h

Detected Declarations

• function snd_pcsp_create
• function alsa_card_pcsp_free
• function snd_card_pcsp_probe
• function alsa_card_pcsp_init
• function pcsp_probe
• function pcsp_stop_beep
• function pcsp_suspend
• function pcsp_shutdown
• function pcsp_init
• function pcsp_exit
• module init pcsp_init

Annotated Snippet

module_init(pcsp_init);
module_exit(pcsp_exit);

Annotation

• Immediate include surface: `linux/init.h`, `linux/module.h`, `linux/platform_device.h`, `sound/core.h`, `sound/initval.h`, `sound/pcm.h`, `linux/input.h`, `linux/delay.h`.
• Detected declarations: `function snd_pcsp_create`, `function alsa_card_pcsp_free`, `function snd_card_pcsp_probe`, `function alsa_card_pcsp_init`, `function pcsp_probe`, `function pcsp_stop_beep`, `function pcsp_suspend`, `function pcsp_shutdown`, `function pcsp_init`, `function pcsp_exit`.
• Atlas domain: Driver Families / sound/drivers.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.