drivers/acpi/acpi_video.c

File Facts

System

Linux kernel

Corpus path

drivers/acpi/acpi_video.c

Extension

.c

Size

59330 bytes

Lines

2235

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.
• 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

• linux/auxiliary_bus.h
• linux/kernel.h
• linux/module.h
• linux/init.h
• linux/types.h
• linux/list.h
• linux/mutex.h
• linux/input.h
• linux/backlight.h
• linux/thermal.h
• linux/sort.h
• linux/pci.h
• linux/pci_ids.h
• linux/slab.h
• linux/dmi.h
• linux/suspend.h
• linux/acpi.h
• acpi/video.h
• linux/uaccess.h
• linux/string_choices.h

Detected Declarations

• struct acpi_video_bus_flags
• struct acpi_video_bus_cap
• struct acpi_video_device_attrib
• struct acpi_video_enumerated_device
• struct acpi_video_bus
• struct acpi_video_device_flags
• struct acpi_video_device_cap
• struct acpi_video_device
• enum acpi_video_level_idx
• function acpi_video_get_brightness
• function acpi_video_set_brightness
• function video_get_max_state
• function video_get_cur_state
• function video_set_cur_state
• function acpi_video_device_lcd_query_levels
• function acpi_video_device_lcd_set_level
• function video_set_bqc_offset
• function video_set_device_id_scheme
• function video_enable_only_lcd
• function video_set_report_key_events
• function video_hw_changes_brightness
• function acpi_video_bqc_value_to_level
• function acpi_video_device_lcd_get_level_current
• function acpi_video_device_EDID
• function acpi_video_bus_DOS
• function acpi_video_cmp_level
• function acpi_video_bqc_quirk
• function acpi_video_get_levels
• function acpi_video_init_brightness
• function acpi_video_device_find_cap
• function acpi_video_bus_find_cap
• function acpi_video_bus_check
• function acpi_video_get_device_attr
• function acpi_video_get_device_type
• function acpi_video_bus_get_one_device
• function acpi_video_device_rebind
• function acpi_video_device_bind
• function acpi_video_device_in_dod
• function acpi_video_device_enumerate
• function acpi_video_get_next_level
• function acpi_video_switch_brightness
• function acpi_video_get_edid
• function acpi_video_bus_put_devices
• function devm_acpi_video_bus_get_devices
• function acpi_video_bus_start_devices
• function acpi_video_bus_stop_devices
• function acpi_video_bus_notify
• function brightness_switch_event

Annotated Snippet

module_init(acpi_video_init);
module_exit(acpi_video_exit);

Annotation

• Immediate include surface: `linux/auxiliary_bus.h`, `linux/kernel.h`, `linux/module.h`, `linux/init.h`, `linux/types.h`, `linux/list.h`, `linux/mutex.h`, `linux/input.h`.
• Detected declarations: `struct acpi_video_bus_flags`, `struct acpi_video_bus_cap`, `struct acpi_video_device_attrib`, `struct acpi_video_enumerated_device`, `struct acpi_video_bus`, `struct acpi_video_device_flags`, `struct acpi_video_device_cap`, `struct acpi_video_device`, `enum acpi_video_level_idx`, `function acpi_video_get_brightness`.
• Atlas domain: Driver Families / drivers/acpi.
• Implementation status: integration implementation candidate.
• 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.