drivers/input/serio/sa1111ps2.c

File Facts

System

Linux kernel

Corpus path

drivers/input/serio/sa1111ps2.c

Extension

.c

Size

8115 bytes

Lines

385

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/module.h
• linux/init.h
• linux/input.h
• linux/serio.h
• linux/errno.h
• linux/interrupt.h
• linux/ioport.h
• linux/delay.h
• linux/device.h
• linux/slab.h
• linux/spinlock.h
• asm/io.h
• asm/hardware/sa1111.h

Detected Declarations

• struct ps2if
• function ps2_rxint
• function ps2_txint
• function ps2_write
• function ps2_open
• function ps2_close
• function ps2_clear_input
• function ps2_test_one
• function ps2_test
• function ps2_probe
• function SA1111_DRIVER_NAME
• function ps2_remove
• function ps2_init
• function ps2_exit
• module init ps2_init

Annotated Snippet

module_init(ps2_init);
module_exit(ps2_exit);

MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("SA1111 PS2 controller driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/input.h`, `linux/serio.h`, `linux/errno.h`, `linux/interrupt.h`, `linux/ioport.h`, `linux/delay.h`.
• Detected declarations: `struct ps2if`, `function ps2_rxint`, `function ps2_txint`, `function ps2_write`, `function ps2_open`, `function ps2_close`, `function ps2_clear_input`, `function ps2_test_one`, `function ps2_test`, `function ps2_probe`.
• Atlas domain: Driver Families / drivers/input.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.