drivers/video/fbdev/controlfb.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/controlfb.c

Extension

.c

Size

25291 bytes

Lines

1019

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

• linux/kernel.h
• linux/errno.h
• linux/string.h
• linux/mm.h
• linux/slab.h
• linux/vmalloc.h
• linux/delay.h
• linux/interrupt.h
• linux/of.h
• linux/of_address.h
• linux/fb.h
• linux/init.h
• linux/pci.h
• linux/nvram.h
• linux/adb.h
• linux/cuda.h
• asm/btext.h
• macmodes.h
• controlfb.h

Detected Declarations

• struct fb_par_control
• struct fb_info_control
• function Copyright
• function PAR_EQUAL
• function controlfb_setcolreg
• function set_control_clock
• function set_screen_start
• function control_set_hardware
• function find_vram_size
• function read_control_sense
• function calc_clock_params
• function control_var_to_par
• function control_par_to_var
• function controlfb_check_var
• function controlfb_set_par
• function controlfb_pan_display
• function controlfb_blank
• function controlfb_mmap
• function control_init_info
• function options
• function init_control
• function control_cleanup
• function control_of_init
• function control_init
• module init control_init

Annotated Snippet

device_initcall(control_init);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/errno.h`, `linux/string.h`, `linux/mm.h`, `linux/slab.h`, `linux/vmalloc.h`, `linux/delay.h`, `linux/interrupt.h`.
• Detected declarations: `struct fb_par_control`, `struct fb_info_control`, `function Copyright`, `function PAR_EQUAL`, `function controlfb_setcolreg`, `function set_control_clock`, `function set_screen_start`, `function control_set_hardware`, `function find_vram_size`, `function read_control_sense`.
• 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.