sound/sparc/amd7930.c

File Facts

System

Linux kernel

Corpus path

sound/sparc/amd7930.c

Extension

.c

Size

30099 bytes

Lines

1063

Domain

Driver Families

Bucket

sound/sparc

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.
• 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/module.h
• linux/kernel.h
• linux/slab.h
• linux/init.h
• linux/interrupt.h
• linux/moduleparam.h
• linux/of.h
• linux/platform_device.h
• linux/io.h
• linux/string.h
• sound/core.h
• sound/pcm.h
• sound/info.h
• sound/control.h
• sound/initval.h
• asm/irq.h

Detected Declarations

• struct amd7930_map
• struct snd_amd7930
• function amd7930_idle
• function amd7930_enable_ints
• function amd7930_disable_ints
• function __amd7930_write_map
• function __amd7930_update_map
• function snd_amd7930_interrupt
• function scoped_guard
• function snd_amd7930_trigger
• function snd_amd7930_playback_trigger
• function snd_amd7930_capture_trigger
• function snd_amd7930_playback_prepare
• function snd_amd7930_capture_prepare
• function snd_amd7930_playback_pointer
• function snd_amd7930_capture_pointer
• function snd_amd7930_playback_open
• function snd_amd7930_capture_open
• function snd_amd7930_playback_close
• function snd_amd7930_capture_close
• function snd_amd7930_pcm
• function snd_amd7930_info_volume
• function snd_amd7930_get_volume
• function snd_amd7930_put_volume
• function snd_amd7930_mixer
• function snd_amd7930_free
• function snd_amd7930_dev_free
• function snd_amd7930_create
• function scoped_guard
• function amd7930_sbus_probe
• function amd7930_init
• function amd7930_exit
• module init amd7930_init

Annotated Snippet

module_init(amd7930_init);
module_exit(amd7930_exit);

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/slab.h`, `linux/init.h`, `linux/interrupt.h`, `linux/moduleparam.h`, `linux/of.h`, `linux/platform_device.h`.
• Detected declarations: `struct amd7930_map`, `struct snd_amd7930`, `function amd7930_idle`, `function amd7930_enable_ints`, `function amd7930_disable_ints`, `function __amd7930_write_map`, `function __amd7930_update_map`, `function snd_amd7930_interrupt`, `function scoped_guard`, `function snd_amd7930_trigger`.
• Atlas domain: Driver Families / sound/sparc.
• 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.