sound/soc/codecs/cirrus_legacy.h

File Facts

System

Linux kernel

Corpus path

sound/soc/codecs/cirrus_legacy.h

Extension

.h

Size

530 bytes

Lines

22

Domain

Driver Families

Bucket

sound/soc

Inferred role

Driver Families: implementation source

Status

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

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• function Copyright

Annotated Snippet

static inline int cirrus_read_device_id(struct regmap *regmap, unsigned int reg)
{
	u8 devid[3];
	int ret;

	ret = regmap_bulk_read(regmap, reg, devid, ARRAY_SIZE(devid));
	if (ret < 0)
		return ret;

	return ((devid[0] & 0xFF) << 12) |
	       ((devid[1] & 0xFF) <<  4) |
	       ((devid[2] & 0xF0) >>  4);
}

Annotation

• Detected declarations: `function Copyright`.
• Atlas domain: Driver Families / sound/soc.
• Implementation status: source 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.