drivers/acpi/button.c

File Facts

System

Linux kernel

Corpus path

drivers/acpi/button.c

Extension

.c

Size

21764 bytes

Lines

823

Domain

Driver Families

Bucket

drivers/acpi

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/compiler.h
• linux/kernel.h
• linux/module.h
• linux/init.h
• linux/types.h
• linux/proc_fs.h
• linux/seq_file.h
• linux/input.h
• linux/slab.h
• linux/acpi.h
• linux/dmi.h
• linux/platform_device.h
• acpi/button.h

Detected Declarations

• struct acpi_button
• function acpi_lid_evaluate_state
• function acpi_lid_notify_state
• function ktime_after
• function acpi_button_state_seq_show
• function acpi_lid_add_fs
• function acpi_lid_remove_fs
• function devm_acpi_lid_add_fs
• function acpi_lid_save
• function acpi_lid_forget
• function acpi_lid_open
• function acpi_lid_update_state
• function acpi_lid_initialize_state
• function acpi_lid_notify
• function acpi_button_notify
• function acpi_button_notify_run
• function acpi_button_event
• function acpi_button_suspend
• function acpi_button_resume
• function acpi_lid_input_open
• function acpi_button_notify_handler
• function acpi_button_wakeup_cleanup
• function devm_acpi_button_init_wakeup
• function acpi_button_remove_event_handler
• function acpi_button_add_fixed_event_handler
• function acpi_button_add_event_handler
• function devm_acpi_button_add_event_handler
• function acpi_button_probe
• function acpi_button_remove
• function param_set_lid_init_state
• function param_get_lid_init_state
• function acpi_button_init
• function acpi_button_exit
• module init acpi_button_init
• export acpi_lid_open

Annotated Snippet

module_init(acpi_button_init);
module_exit(acpi_button_exit);

Annotation

• Immediate include surface: `linux/compiler.h`, `linux/kernel.h`, `linux/module.h`, `linux/init.h`, `linux/types.h`, `linux/proc_fs.h`, `linux/seq_file.h`, `linux/input.h`.
• Detected declarations: `struct acpi_button`, `function acpi_lid_evaluate_state`, `function acpi_lid_notify_state`, `function ktime_after`, `function acpi_button_state_seq_show`, `function acpi_lid_add_fs`, `function acpi_lid_remove_fs`, `function devm_acpi_lid_add_fs`, `function acpi_lid_save`, `function acpi_lid_forget`.
• Atlas domain: Driver Families / drivers/acpi.
• 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.