drivers/w1/slaves/w1_ds2433.c

File Facts

System

Linux kernel

Corpus path

drivers/w1/slaves/w1_ds2433.c

Extension

.c

Size

9837 bytes

Lines

420

Domain

Driver Families

Bucket

drivers/w1

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/kernel.h
• linux/module.h
• linux/moduleparam.h
• linux/device.h
• linux/types.h
• linux/delay.h
• linux/slab.h
• linux/crc16.h
• linux/w1.h

Detected Declarations

• struct ds2433_config
• struct w1_f23_data
• function w1_f23_fix_count
• function w1_f23_refresh_block
• function eeprom_read
• function w1_f23_write
• function eeprom_write
• function w1_f23_add_slave
• function w1_f23_remove_slave
• function w1_ds2433_init
• function w1_ds2433_exit
• module init w1_ds2433_init

Annotated Snippet

module_init(w1_ds2433_init);
module_exit(w1_ds2433_exit);

MODULE_AUTHOR("Ben Gardner <bgardner@wabtec.com>");
MODULE_AUTHOR("Marc Ferland <marc.ferland@sonatest.com>");
MODULE_DESCRIPTION("w1 family 23/43 driver for DS2433 (4kb) and DS28EC20 (20kb)");
MODULE_LICENSE("GPL");
MODULE_ALIAS("w1-family-" __stringify(W1_EEPROM_DS2433));
MODULE_ALIAS("w1-family-" __stringify(W1_EEPROM_DS28EC20));

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/device.h`, `linux/types.h`, `linux/delay.h`, `linux/slab.h`, `linux/crc16.h`.
• Detected declarations: `struct ds2433_config`, `struct w1_f23_data`, `function w1_f23_fix_count`, `function w1_f23_refresh_block`, `function eeprom_read`, `function w1_f23_write`, `function eeprom_write`, `function w1_f23_add_slave`, `function w1_f23_remove_slave`, `function w1_ds2433_init`.
• Atlas domain: Driver Families / drivers/w1.
• 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.