sound/pci/ens1370.c

File Facts

System

Linux kernel

Corpus path

sound/pci/ens1370.c

Extension

.c

Size

76137 bytes

Lines

2351

Domain

Driver Families

Bucket

sound/pci

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• 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/io.h
• linux/delay.h
• linux/interrupt.h
• linux/init.h
• linux/pci.h
• linux/slab.h
• linux/gameport.h
• linux/module.h
• linux/mutex.h
• sound/core.h
• sound/control.h
• sound/pcm.h
• sound/rawmidi.h
• sound/ac97_codec.h
• sound/ak4531_codec.h
• sound/initval.h
• sound/asoundef.h

Detected Declarations

• struct ensoniq
• struct es1371_quirk
• function snd_es1371_wait_src_ready
• function snd_es1371_src_read
• function snd_es1371_src_write
• function snd_es1370_codec_write
• function is_ev1938
• function snd_es1371_codec_write
• function snd_es1371_codec_read
• function snd_es1371_codec_wait
• function snd_es1371_adc_rate
• function snd_es1371_dac1_rate
• function snd_es1371_dac2_rate
• function snd_ensoniq_trigger
• function snd_pcm_group_for_each_entry
• function scoped_guard
• function snd_pcm_group_for_each_entry
• function scoped_guard
• function snd_ensoniq_playback1_prepare
• function snd_ensoniq_playback2_prepare
• function snd_ensoniq_capture_prepare
• function snd_ensoniq_playback1_pointer
• function snd_ensoniq_playback2_pointer
• function snd_ensoniq_capture_pointer
• function snd_ensoniq_playback1_open
• function snd_ensoniq_playback2_open
• function snd_ensoniq_capture_open
• function snd_ensoniq_playback1_close
• function snd_ensoniq_playback2_close
• function snd_ensoniq_capture_close
• function snd_ensoniq_pcm
• function snd_ensoniq_pcm2
• function mixer
• function snd_ens1373_spdif_default_get
• function snd_ens1373_spdif_default_put
• function snd_ens1373_spdif_mask_get
• function snd_ens1373_spdif_stream_get
• function snd_ens1373_spdif_stream_put
• function snd_es1371_spdif_get
• function snd_es1371_spdif_put
• function snd_es1373_rear_get
• function snd_es1373_rear_put
• function snd_es1373_line_get
• function snd_es1373_line_put
• function snd_ensoniq_mixer_free_ac97
• function es1371_quirk_lookup
• function snd_ensoniq_1371_mixer
• function snd_pci_quirk_lookup

Annotated Snippet

static struct pci_driver ens137x_driver = {
	.name = KBUILD_MODNAME,
	.id_table = snd_audiopci_ids,
	.probe = snd_audiopci_probe,
	.driver = {
		.pm = &snd_ensoniq_pm,
	},
};
	
module_pci_driver(ens137x_driver);

Annotation

• Immediate include surface: `linux/io.h`, `linux/delay.h`, `linux/interrupt.h`, `linux/init.h`, `linux/pci.h`, `linux/slab.h`, `linux/gameport.h`, `linux/module.h`.
• Detected declarations: `struct ensoniq`, `struct es1371_quirk`, `function snd_es1371_wait_src_ready`, `function snd_es1371_src_read`, `function snd_es1371_src_write`, `function snd_es1370_codec_write`, `function is_ev1938`, `function snd_es1371_codec_write`, `function snd_es1371_codec_read`, `function snd_es1371_codec_wait`.
• Atlas domain: Driver Families / sound/pci.
• Implementation status: pattern 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.