drivers/gpio/gpio-mc33880.c

File Facts

System

Linux kernel

Corpus path

drivers/gpio/gpio-mc33880.c

Extension

.c

Size

3596 bytes

Lines

177

Domain

Driver Families

Bucket

drivers/gpio

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.
• 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/init.h
• linux/mutex.h
• linux/spi/spi.h
• linux/spi/mc33880.h
• linux/gpio/driver.h
• linux/slab.h
• linux/module.h

Detected Declarations

• struct mc33880
• function mc33880_write_config
• function __mc33880_set
• function mc33880_set
• function mc33880_probe
• function mc33880_remove
• function mc33880_init
• function mc33880_exit
• module init mc33880_init

Annotated Snippet

subsys_initcall(mc33880_init);

static void __exit mc33880_exit(void)
{
	spi_unregister_driver(&mc33880_driver);
}
module_exit(mc33880_exit);

MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
MODULE_DESCRIPTION("MC33880 high-side/low-side switch GPIO driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/init.h`, `linux/mutex.h`, `linux/spi/spi.h`, `linux/spi/mc33880.h`, `linux/gpio/driver.h`, `linux/slab.h`, `linux/module.h`.
• Detected declarations: `struct mc33880`, `function mc33880_write_config`, `function __mc33880_set`, `function mc33880_set`, `function mc33880_probe`, `function mc33880_remove`, `function mc33880_init`, `function mc33880_exit`, `module init mc33880_init`.
• Atlas domain: Driver Families / drivers/gpio.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.