drivers/w1/masters/matrox_w1.c

File Facts

System

Linux kernel

Corpus path

drivers/w1/masters/matrox_w1.c

Extension

.c

Size

4589 bytes

Lines

199

Domain

Driver Families

Bucket

drivers/w1

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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 an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• 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

• asm/types.h
• linux/atomic.h
• linux/io.h
• linux/delay.h
• linux/kernel.h
• linux/module.h
• linux/list.h
• linux/interrupt.h
• linux/spinlock.h
• linux/timer.h
• linux/slab.h
• linux/pci_ids.h
• linux/pci.h
• linux/w1.h

Detected Declarations

• struct matrox_device
• function matrox_w1_read_reg
• function matrox_w1_write_reg
• function matrox_w1_write_ddc_bit
• function matrox_w1_read_ddc_bit
• function matrox_w1_hw_init
• function matrox_w1_probe
• function matrox_w1_remove

Annotated Snippet

static struct pci_driver matrox_w1_pci_driver = {
	.name = "matrox_w1",
	.id_table = matrox_w1_tbl,
	.probe = matrox_w1_probe,
	.remove = matrox_w1_remove,
};
module_pci_driver(matrox_w1_pci_driver);

MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>");
MODULE_DESCRIPTION("Driver for transport(Dallas 1-wire protocol) over VGA DDC(matrox gpio).");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `asm/types.h`, `linux/atomic.h`, `linux/io.h`, `linux/delay.h`, `linux/kernel.h`, `linux/module.h`, `linux/list.h`, `linux/interrupt.h`.
• Detected declarations: `struct matrox_device`, `function matrox_w1_read_reg`, `function matrox_w1_write_reg`, `function matrox_w1_write_ddc_bit`, `function matrox_w1_read_ddc_bit`, `function matrox_w1_hw_init`, `function matrox_w1_probe`, `function matrox_w1_remove`.
• Atlas domain: Driver Families / drivers/w1.
• Implementation status: pattern 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.