sound/firewire/fcp.h

File Facts

System

Linux kernel

Corpus path

sound/firewire/fcp.h

Extension

.h

Size

1072 bytes

Lines

35

Domain

Driver Families

Bucket

sound/firewire

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

• struct fw_unit
• enum avc_general_plug_dir

Annotated Snippet

#ifndef SOUND_FIREWIRE_FCP_H_INCLUDED
#define SOUND_FIREWIRE_FCP_H_INCLUDED

#define	AVC_PLUG_INFO_BUF_BYTES	4

struct fw_unit;

/*
 * AV/C Digital Interface Command Set General Specification 4.2
 * (Sep 2004, 1394TA)
 */
enum avc_general_plug_dir {
	AVC_GENERAL_PLUG_DIR_IN		= 0,
	AVC_GENERAL_PLUG_DIR_OUT	= 1,
	AVC_GENERAL_PLUG_DIR_COUNT
};
int avc_general_set_sig_fmt(struct fw_unit *unit, unsigned int rate,
			    enum avc_general_plug_dir dir,
			    unsigned short plug);
int avc_general_get_sig_fmt(struct fw_unit *unit, unsigned int *rate,
			    enum avc_general_plug_dir dir,
			    unsigned short plug);
int avc_general_get_plug_info(struct fw_unit *unit, unsigned int subunit_type,
			      unsigned int subunit_id, unsigned int subfunction,
			      u8 info[AVC_PLUG_INFO_BUF_BYTES]);

int fcp_avc_transaction(struct fw_unit *unit,
			const void *command, unsigned int command_size,
			void *response, unsigned int response_size,
			unsigned int response_match_bytes);
void fcp_bus_reset(struct fw_unit *unit);

#endif

Annotation

• Detected declarations: `struct fw_unit`, `enum avc_general_plug_dir`.
• Atlas domain: Driver Families / sound/firewire.
• 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.