sound/isa/opti9xx/opti92x-ad1848.c

File Facts

System

Linux kernel

Corpus path

sound/isa/opti9xx/opti92x-ad1848.c

Extension

.c

Size

29548 bytes

Lines

1165

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/delay.h
• linux/pnp.h
• linux/module.h
• linux/io.h
• asm/dma.h
• sound/core.h
• sound/tlv.h
• sound/wss.h
• sound/mpu401.h
• sound/opl3.h
• sound/opl4.h
• sound/initval.h

Detected Declarations

• struct snd_opti9xx
• function snd_opti9xx_init
• function snd_opti9xx_read
• function snd_opti9xx_write
• function snd_opti9xx_write_mask
• function snd_opti9xx_configure
• function snd_opti93x_mixer
• function snd_opti93x_interrupt
• function snd_opti9xx_read_check
• function scoped_guard
• function snd_card_opti9xx_detect
• function snd_card_opti9xx_pnp
• function snd_opti9xx_probe
• function snd_opti9xx_card_new
• function snd_opti9xx_isa_match
• function snd_opti9xx_isa_probe
• function snd_opti9xx_suspend
• function snd_opti9xx_resume
• function snd_opti9xx_isa_suspend
• function snd_opti9xx_isa_resume
• function snd_opti9xx_pnp_probe
• function snd_opti9xx_pnp_remove
• function snd_opti9xx_pnp_suspend
• function snd_opti9xx_pnp_resume
• function alsa_card_opti9xx_init
• function alsa_card_opti9xx_exit
• module init alsa_card_opti9xx_init

Annotated Snippet

module_init(alsa_card_opti9xx_init)
module_exit(alsa_card_opti9xx_exit)

Annotation

• Immediate include surface: `linux/init.h`, `linux/err.h`, `linux/isa.h`, `linux/delay.h`, `linux/pnp.h`, `linux/module.h`, `linux/io.h`, `asm/dma.h`.
• Detected declarations: `struct snd_opti9xx`, `function snd_opti9xx_init`, `function snd_opti9xx_read`, `function snd_opti9xx_write`, `function snd_opti9xx_write_mask`, `function snd_opti9xx_configure`, `function snd_opti93x_mixer`, `function snd_opti93x_interrupt`, `function snd_opti9xx_read_check`, `function scoped_guard`.
• 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.