sound/soc/pxa/pxa2xx-i2s.c

File Facts

System

Linux kernel

Corpus path

sound/soc/pxa/pxa2xx-i2s.c

Extension

.c

Size

11545 bytes

Lines

413

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/init.h
• linux/module.h
• linux/device.h
• linux/delay.h
• linux/clk.h
• linux/platform_device.h
• linux/io.h
• sound/core.h
• sound/pcm.h
• sound/initval.h
• sound/soc.h
• sound/dmaengine_pcm.h
• linux/platform_data/asoc-pxa.h
• pxa2xx-lib.h
• pxa2xx-i2s.h

Detected Declarations

• struct pxa_i2s_port
• function pxa2xx_i2s_startup
• function pxa_i2s_wait
• function pxa2xx_i2s_set_dai_fmt
• function pxa2xx_i2s_set_dai_sysclk
• function pxa2xx_i2s_hw_params
• function pxa2xx_i2s_trigger
• function pxa2xx_i2s_shutdown
• function pxa2xx_soc_pcm_suspend
• function pxa2xx_soc_pcm_resume
• function pxa2xx_i2s_probe
• function pxa2xx_i2s_remove
• function pxa2xx_i2s_drv_probe
• function pxa2xx_i2s_init
• function pxa2xx_i2s_exit
• module init pxa2xx_i2s_init

Annotated Snippet

module_init(pxa2xx_i2s_init);
module_exit(pxa2xx_i2s_exit);

/* Module information */
MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
MODULE_DESCRIPTION("pxa2xx I2S SoC Interface");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pxa2xx-i2s");

Annotation

• Immediate include surface: `linux/init.h`, `linux/module.h`, `linux/device.h`, `linux/delay.h`, `linux/clk.h`, `linux/platform_device.h`, `linux/io.h`, `sound/core.h`.
• Detected declarations: `struct pxa_i2s_port`, `function pxa2xx_i2s_startup`, `function pxa_i2s_wait`, `function pxa2xx_i2s_set_dai_fmt`, `function pxa2xx_i2s_set_dai_sysclk`, `function pxa2xx_i2s_hw_params`, `function pxa2xx_i2s_trigger`, `function pxa2xx_i2s_shutdown`, `function pxa2xx_soc_pcm_suspend`, `function pxa2xx_soc_pcm_resume`.
• Atlas domain: Driver Families / sound/soc.
• 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.