sound/usb/usx2y/us122l.h

File Facts

System

Linux kernel

Corpus path

sound/usb/usx2y/us122l.h

Extension

.h

Size

578 bytes

Lines

33

Domain

Driver Families

Bucket

sound/usb

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 us122l

Annotated Snippet

struct us122l {
	struct usb_device	*dev;
	int			card_index;
	int			stride;
	struct usb_stream_kernel sk;

	struct mutex		mutex;
	struct file		*first;
	unsigned int		second_periods_polled;
	struct file		*master;
	struct file		*slave;
	struct list_head	midi_list;

	bool			is_us144;
};


#define US122L(c) ((struct us122l *)(c)->private_data)

#define NAME_ALLCAPS "US-122L"

#define USB_ID_US122L 0x800E
#define USB_ID_US144 0x800F
#define USB_ID_US122MKII 0x8021
#define USB_ID_US144MKII 0x8020

#endif

Annotation

• Detected declarations: `struct us122l`.
• Atlas domain: Driver Families / sound/usb.
• 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.