drivers/video/fbdev/matrox/i2c-matroxfb.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/matrox/i2c-matroxfb.c

Extension

.c

Size

6286 bytes

Lines

235

Domain

Driver Families

Bucket

drivers/video

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

• matroxfb_base.h
• matroxfb_maven.h
• linux/i2c.h
• linux/slab.h
• linux/i2c-algo-bit.h

Detected Declarations

• struct matroxfb_dh_maven_info
• function matroxfb_read_gpio
• function matroxfb_set_gpio
• function matroxfb_i2c_set
• function matroxfb_gpio_setsda
• function matroxfb_gpio_setscl
• function matroxfb_gpio_getsda
• function matroxfb_gpio_getscl
• function i2c_bus_reg
• function i2c_bit_bus_del
• function i2c_maven_done
• function i2c_ddc1_done
• function i2c_ddc2_done
• function i2c_matroxfb_probe
• function i2c_matroxfb_remove
• function i2c_matroxfb_init
• function i2c_matroxfb_exit
• module init i2c_matroxfb_init

Annotated Snippet

module_init(i2c_matroxfb_init);
module_exit(i2c_matroxfb_exit);
/* no __setup required */
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `matroxfb_base.h`, `matroxfb_maven.h`, `linux/i2c.h`, `linux/slab.h`, `linux/i2c-algo-bit.h`.
• Detected declarations: `struct matroxfb_dh_maven_info`, `function matroxfb_read_gpio`, `function matroxfb_set_gpio`, `function matroxfb_i2c_set`, `function matroxfb_gpio_setsda`, `function matroxfb_gpio_setscl`, `function matroxfb_gpio_getsda`, `function matroxfb_gpio_getscl`, `function i2c_bus_reg`, `function i2c_bit_bus_del`.
• Atlas domain: Driver Families / drivers/video.
• 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.