drivers/most/most_snd.c

File Facts

System

Linux kernel

Corpus path

drivers/most/most_snd.c

Extension

.c

Size

19208 bytes

Lines

748

Domain

Driver Families

Bucket

drivers/most

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.
• 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/printk.h
• linux/kernel.h
• linux/slab.h
• linux/init.h
• sound/core.h
• sound/pcm.h
• sound/pcm_params.h
• linux/sched.h
• linux/kthread.h
• linux/most.h

Detected Declarations

• struct channel
• struct sound_adapter
• function swap_copy16
• function swap_copy24
• function swap_copy32
• function alsa_to_most_memcpy
• function alsa_to_most_copy16
• function alsa_to_most_copy24
• function alsa_to_most_copy32
• function most_to_alsa_memcpy
• function most_to_alsa_copy16
• function most_to_alsa_copy24
• function most_to_alsa_copy32
• function list_for_each_entry
• function copy_data
• function playback_thread
• function pcm_open
• function pcm_close
• function pcm_prepare
• function pcm_trigger
• function pcm_pointer
• function split_arg_list
• function audio_set_hw_params
• function release_adapter
• function list_for_each_entry_safe
• function audio_probe_channel
• function list_for_each_entry
• function audio_create_sound_card
• function list_for_each_entry
• function audio_disconnect_channel
• function audio_rx_completion
• function audio_tx_completion
• function audio_init
• function audio_exit
• module init audio_init

Annotated Snippet

module_init(audio_init);
module_exit(audio_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Gromm <christian.gromm@microchip.com>");
MODULE_DESCRIPTION("Sound Component Module for Mostcore");

Annotation

• Immediate include surface: `linux/module.h`, `linux/printk.h`, `linux/kernel.h`, `linux/slab.h`, `linux/init.h`, `sound/core.h`, `sound/pcm.h`, `sound/pcm_params.h`.
• Detected declarations: `struct channel`, `struct sound_adapter`, `function swap_copy16`, `function swap_copy24`, `function swap_copy32`, `function alsa_to_most_memcpy`, `function alsa_to_most_copy16`, `function alsa_to_most_copy24`, `function alsa_to_most_copy32`, `function most_to_alsa_memcpy`.
• Atlas domain: Driver Families / drivers/most.
• 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.