drivers/video/fbdev/sa1100fb.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/sa1100fb.c

Extension

.c

Size

35343 bytes

Lines

1229

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/module.h
• linux/kernel.h
• linux/sched.h
• linux/errno.h
• linux/string.h
• linux/interrupt.h
• linux/slab.h
• linux/mm.h
• linux/fb.h
• linux/delay.h
• linux/init.h
• linux/ioport.h
• linux/cpufreq.h
• linux/gpio/consumer.h
• linux/platform_device.h
• linux/dma-mapping.h
• linux/mutex.h
• linux/io.h
• linux/clk.h
• video/sa1100fb.h
• mach/hardware.h
• asm/mach-types.h
• sa1100fb.h

Detected Declarations

• function sa1100fb_schedule_work
• function chan_to_field
• function palette_pbs
• function sa1100fb_setpalettereg
• function sa1100fb_setcolreg
• function sa1100fb_display_dma_period
• function sa1100fb_check_var
• function sa1100fb_set_visual
• function sa1100fb_set_par
• function sa1100fb_set_cmap
• function video
• function sa1100fb_mmap
• function rate
• function sa1100fb_activate_var
• function __sa1100fb_backlight_power
• function __sa1100fb_lcd_power
• function sa1100fb_setup_gpio
• function sa1100fb_enable_controller
• function sa1100fb_disable_controller
• function sa1100fb_handle_irq
• function set_ctrlr_state
• function task
• function sa1100fb_freq_transition
• function sa1100fb_suspend
• function sa1100fb_resume
• function sa1100fb_map_video_memory
• function sa1100fb_probe
• function sa1100fb_init
• module init sa1100fb_init

Annotated Snippet

module_init(sa1100fb_init);
MODULE_DESCRIPTION("StrongARM-1100/1110 framebuffer driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/sched.h`, `linux/errno.h`, `linux/string.h`, `linux/interrupt.h`, `linux/slab.h`, `linux/mm.h`.
• Detected declarations: `function sa1100fb_schedule_work`, `function chan_to_field`, `function palette_pbs`, `function sa1100fb_setpalettereg`, `function sa1100fb_setcolreg`, `function sa1100fb_display_dma_period`, `function sa1100fb_check_var`, `function sa1100fb_set_visual`, `function sa1100fb_set_par`, `function sa1100fb_set_cmap`.
• Atlas domain: Driver Families / drivers/video.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.