sound/isa/opl3sa2.c

File Facts

System

Linux kernel

Corpus path

sound/isa/opl3sa2.c

Extension

.c

Size

27701 bytes

Lines

912

Domain

Driver Families

Bucket

sound/isa

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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/err.h
• linux/isa.h
• linux/interrupt.h
• linux/pm.h
• linux/pnp.h
• linux/module.h
• linux/io.h
• sound/core.h
• sound/wss.h
• sound/mpu401.h
• sound/opl3.h
• sound/initval.h
• sound/tlv.h

Detected Declarations

• struct snd_opl3sa2
• function __snd_opl3sa2_read
• function snd_opl3sa2_read
• function __snd_opl3sa2_write
• function snd_opl3sa2_write
• function snd_opl3sa2_detect
• function snd_opl3sa2_interrupt
• function snd_opl3sa2_get_single
• function snd_opl3sa2_put_single
• function snd_opl3sa2_get_double
• function snd_opl3sa2_put_double
• function snd_opl3sa2_master_free
• function snd_opl3sa2_mixer
• function snd_opl3sa2_suspend
• function snd_opl3sa2_resume
• function snd_opl3sa2_pnp
• function snd_opl3sa2_card_new
• function snd_opl3sa2_probe
• function snd_opl3sa2_pnp_detect
• function snd_opl3sa2_pnp_suspend
• function snd_opl3sa2_pnp_resume
• function snd_opl3sa2_pnp_cdetect
• function snd_opl3sa2_pnp_csuspend
• function snd_opl3sa2_pnp_cresume
• function snd_opl3sa2_isa_match
• function snd_opl3sa2_isa_probe
• function snd_opl3sa2_isa_suspend
• function snd_opl3sa2_isa_resume
• function alsa_card_opl3sa2_init
• function alsa_card_opl3sa2_exit
• module init alsa_card_opl3sa2_init

Annotated Snippet

module_init(alsa_card_opl3sa2_init)
module_exit(alsa_card_opl3sa2_exit)

Annotation

• Immediate include surface: `linux/init.h`, `linux/err.h`, `linux/isa.h`, `linux/interrupt.h`, `linux/pm.h`, `linux/pnp.h`, `linux/module.h`, `linux/io.h`.
• Detected declarations: `struct snd_opl3sa2`, `function __snd_opl3sa2_read`, `function snd_opl3sa2_read`, `function __snd_opl3sa2_write`, `function snd_opl3sa2_write`, `function snd_opl3sa2_detect`, `function snd_opl3sa2_interrupt`, `function snd_opl3sa2_get_single`, `function snd_opl3sa2_put_single`, `function snd_opl3sa2_get_double`.
• Atlas domain: Driver Families / sound/isa.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.