sound/soc/soc-core.c

File Facts

System

Linux kernel

Corpus path

sound/soc/soc-core.c

Extension

.c

Size

92205 bytes

Lines

3737

Domain

Driver Families

Bucket

sound/soc

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.
• 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/moduleparam.h
• linux/init.h
• linux/delay.h
• linux/pm.h
• linux/bitops.h
• linux/debugfs.h
• linux/platform_device.h
• linux/pinctrl/consumer.h
• linux/ctype.h
• linux/slab.h
• linux/of.h
• linux/of_graph.h
• linux/dmi.h
• linux/acpi.h
• linux/string_choices.h
• sound/core.h
• sound/pcm.h
• sound/pcm_params.h
• sound/soc.h
• sound/soc-dpcm.h
• sound/soc-topology.h
• sound/soc-link.h
• sound/initval.h
• trace/events/asoc.h

Detected Declarations

• function pmdown_time_show
• function pmdown_time_store
• function soc_dev_attr_is_visible
• function soc_init_component_debugfs
• function soc_cleanup_component_debugfs
• function dai_list_show
• function component_list_show
• function soc_init_card_debugfs
• function soc_cleanup_card_debugfs
• function snd_soc_debugfs_init
• function snd_soc_debugfs_exit
• function soc_init_component_debugfs
• function snd_soc_dlc_component_is_empty
• function snd_soc_dlc_component_is_invalid
• function snd_soc_dlc_dai_is_empty
• function snd_soc_is_matching_dai
• function snd_soc_rtd_add_component
• function for_each_rtd_components
• function snd_soc_rtdcom_lookup
• function for_each_component
• function for_each_card_rtds
• function snd_soc_close_delayed_work
• function soc_release_rtd_dev
• function soc_free_pcm_runtime
• function close_delayed_work
• function snd_soc_fill_dummy_dai
• function COMP_DUMMY
• function snd_soc_flush_all_delayed_work
• function soc_playback_digital_mute
• function for_each_card_rtds
• function for_each_rtd_dais
• function soc_dapm_suspend_resume
• function for_each_card_rtds
• function snd_soc_suspend
• function for_each_rtd_components
• function soc_resume_deferred
• function for_each_card_components
• function snd_soc_resume
• function soc_resume_init
• function soc_resume_init
• function snd_soc_is_matching_component
• function soc_dai_link_sanity_check
• function snd_soc_compensate_channel_connection_map
• function snd_soc_remove_pcm_runtime
• function snd_soc_add_pcm_runtime
• function for_each_link_cpus
• function for_each_component
• function snd_soc_add_pcm_runtimes

Annotated Snippet

module_init(snd_soc_init);

static void __exit snd_soc_exit(void)
{
	snd_soc_util_exit();
	snd_soc_debugfs_exit();

	platform_driver_unregister(&soc_driver);
}
module_exit(snd_soc_exit);

/* Module information */
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
MODULE_DESCRIPTION("ALSA SoC Core");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:soc-audio");

Annotation

• Immediate include surface: `linux/module.h`, `linux/moduleparam.h`, `linux/init.h`, `linux/delay.h`, `linux/pm.h`, `linux/bitops.h`, `linux/debugfs.h`, `linux/platform_device.h`.
• Detected declarations: `function pmdown_time_show`, `function pmdown_time_store`, `function soc_dev_attr_is_visible`, `function soc_init_component_debugfs`, `function soc_cleanup_component_debugfs`, `function dai_list_show`, `function component_list_show`, `function soc_init_card_debugfs`, `function soc_cleanup_card_debugfs`, `function snd_soc_debugfs_init`.
• Atlas domain: Driver Families / sound/soc.
• 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.