drivers/video/backlight/aat2870_bl.c

File Facts

System

Linux kernel

Corpus path

drivers/video/backlight/aat2870_bl.c

Extension

.c

Size

4945 bytes

Lines

207

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/module.h
• linux/kernel.h
• linux/init.h
• linux/platform_device.h
• linux/mutex.h
• linux/delay.h
• linux/backlight.h
• linux/mfd/aat2870.h

Detected Declarations

• struct aat2870_bl_driver_data
• function aat2870_brightness
• function aat2870_bl_enable
• function aat2870_bl_disable
• function aat2870_bl_update_status
• function aat2870_bl_probe
• function aat2870_bl_remove
• function aat2870_bl_init
• function aat2870_bl_exit
• module init aat2870_bl_init

Annotated Snippet

subsys_initcall(aat2870_bl_init);

static void __exit aat2870_bl_exit(void)
{
	platform_driver_unregister(&aat2870_bl_driver);
}
module_exit(aat2870_bl_exit);

MODULE_DESCRIPTION("AnalogicTech AAT2870 Backlight");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jin Park <jinyoungp@nvidia.com>");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/init.h`, `linux/platform_device.h`, `linux/mutex.h`, `linux/delay.h`, `linux/backlight.h`, `linux/mfd/aat2870.h`.
• Detected declarations: `struct aat2870_bl_driver_data`, `function aat2870_brightness`, `function aat2870_bl_enable`, `function aat2870_bl_disable`, `function aat2870_bl_update_status`, `function aat2870_bl_probe`, `function aat2870_bl_remove`, `function aat2870_bl_init`, `function aat2870_bl_exit`, `module init aat2870_bl_init`.
• 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.