sound/pci/ali5451/ali5451.c

File Facts

System

Linux kernel

Corpus path

sound/pci/ali5451/ali5451.c

Extension

.c

Size

53834 bytes

Lines

2151

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.
• 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/module.h
• linux/dma-mapping.h
• sound/core.h
• sound/pcm.h
• sound/info.h
• sound/ac97_codec.h
• sound/mpu401.h
• sound/initval.h

Detected Declarations

• struct snd_ali
• struct snd_ali_voice
• struct snd_ali_channel_control
• struct REGDATA
• struct REGS
• struct snd_ali_voice
• struct snd_alidev
• struct snd_ali_image
• struct snd_ali
• struct ali_pcm_description
• function snd_ali_5451_peek
• function snd_ali_5451_poke
• function snd_ali_codec_ready
• function snd_ali_stimer_ready
• function snd_ali_codec_poke
• function snd_ali_codec_peek
• function snd_ali_codec_write
• function snd_ali_codec_read
• function snd_ali_reset_5451
• function snd_ali_enable_special_channel
• function snd_ali_disable_special_channel
• function snd_ali_enable_address_interrupt
• function snd_ali_disable_address_interrupt
• function snd_ali_disable_voice_irq
• function snd_ali_alloc_pcm_channel
• function snd_ali_find_free_channel
• function snd_ali_free_channel_pcm
• function snd_ali_stop_voice
• function snd_ali_delay
• function snd_ali_detect_spdif_rate
• function snd_ali_get_spdif_in_rate
• function snd_ali_enable_spdif_in
• function snd_ali_disable_spdif_in
• function snd_ali_set_spdif_out_rate
• function snd_ali_enable_spdif_out
• function snd_ali_enable_spdif_chnout
• function snd_ali_disable_spdif_chnout
• function snd_ali_disable_spdif_out
• function snd_ali_update_ptr
• function snd_ali_card_interrupt
• function snd_ali_free_voice
• function snd_ali_clear_voices
• function snd_ali_write_voice_regs
• function snd_ali_convert_rate
• function snd_ali_control_mode
• function snd_ali_trigger
• function snd_ali_playback_hw_params
• function snd_ali_playback_hw_free

Annotated Snippet

static struct pci_driver ali5451_driver = {
	.name = KBUILD_MODNAME,
	.id_table = snd_ali_ids,
	.probe = snd_ali_probe,
	.driver = {
		.pm = &ali_pm,
	},
};                                

module_pci_driver(ali5451_driver);

Annotation

• Immediate include surface: `linux/io.h`, `linux/delay.h`, `linux/interrupt.h`, `linux/init.h`, `linux/pci.h`, `linux/slab.h`, `linux/module.h`, `linux/dma-mapping.h`.
• Detected declarations: `struct snd_ali`, `struct snd_ali_voice`, `struct snd_ali_channel_control`, `struct REGDATA`, `struct REGS`, `struct snd_ali_voice`, `struct snd_alidev`, `struct snd_ali_image`, `struct snd_ali`, `struct ali_pcm_description`.
• 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.