drivers/input/joystick/n64joy.c

File Facts

System

Linux kernel

Corpus path

drivers/input/joystick/n64joy.c

Extension

.c

Size

7922 bytes

Lines

343

Domain

Driver Families

Bucket

drivers/input

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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/errno.h
• linux/init.h
• linux/input.h
• linux/limits.h
• linux/kernel.h
• linux/module.h
• linux/mutex.h
• linux/platform_device.h
• linux/slab.h
• linux/timer.h

Detected Declarations

• struct n64joy_priv
• struct joydata
• function n64joy_write_reg
• function n64joy_read_reg
• function n64joy_wait_si_dma
• function n64joy_exec_pif
• function n64joy_poll
• function n64joy_open
• function scoped_guard
• function n64joy_close
• function n64joy_probe
• function n64joy_init
• module init n64joy_init

Annotated Snippet

module_init(n64joy_init);

Annotation

• Immediate include surface: `linux/errno.h`, `linux/init.h`, `linux/input.h`, `linux/limits.h`, `linux/kernel.h`, `linux/module.h`, `linux/mutex.h`, `linux/platform_device.h`.
• Detected declarations: `struct n64joy_priv`, `struct joydata`, `function n64joy_write_reg`, `function n64joy_read_reg`, `function n64joy_wait_si_dma`, `function n64joy_exec_pif`, `function n64joy_poll`, `function n64joy_open`, `function scoped_guard`, `function n64joy_close`.
• Atlas domain: Driver Families / drivers/input.
• 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.