drivers/video/fbdev/matrox/matroxfb_crtc2.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/matrox/matroxfb_crtc2.c

Extension

.c

Size

20208 bytes

Lines

737

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.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• 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

• matroxfb_maven.h
• matroxfb_crtc2.h
• matroxfb_misc.h
• matroxfb_DAC1064.h
• linux/matroxfb.h
• linux/slab.h
• linux/uaccess.h

Detected Declarations

• function matroxfb_dh_setcolreg
• function matroxfb_dh_restore
• function matroxfb_dh_disable
• function matroxfb_dh_pan_var
• function matroxfb_dh_decode_var
• function matroxfb_dh_open
• function matroxfb_dh_release
• function matroxfb_dh_init_fix
• function matroxfb_dh_check_var
• function matroxfb_dh_set_par
• function matroxfb_dh_pan_display
• function matroxfb_dh_get_vblank
• function matroxfb_dh_ioctl
• function DBG
• function matroxfb_dh_blank
• function matroxfb_dh_regit
• function matroxfb_dh_registerfb
• function matroxfb_dh_deregisterfb
• function matroxfb_crtc2_probe
• function matroxfb_crtc2_remove
• function matroxfb_crtc2_init
• function matroxfb_crtc2_exit
• module init matroxfb_crtc2_init

Annotated Snippet

module_init(matroxfb_crtc2_init);
module_exit(matroxfb_crtc2_exit);
/* we do not have __setup() yet */

Annotation

• Immediate include surface: `matroxfb_maven.h`, `matroxfb_crtc2.h`, `matroxfb_misc.h`, `matroxfb_DAC1064.h`, `linux/matroxfb.h`, `linux/slab.h`, `linux/uaccess.h`.
• Detected declarations: `function matroxfb_dh_setcolreg`, `function matroxfb_dh_restore`, `function matroxfb_dh_disable`, `function matroxfb_dh_pan_var`, `function matroxfb_dh_decode_var`, `function matroxfb_dh_open`, `function matroxfb_dh_release`, `function matroxfb_dh_init_fix`, `function matroxfb_dh_check_var`, `function matroxfb_dh_set_par`.
• Atlas domain: Driver Families / drivers/video.
• Implementation status: integration implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• 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.