drivers/platform/x86/fujitsu-laptop.c

File Facts

System

Linux kernel

Corpus path

drivers/platform/x86/fujitsu-laptop.c

Extension

.c

Size

32425 bytes

Lines

1198

Domain

Driver Families

Bucket

drivers/platform

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/module.h
• linux/kernel.h
• linux/init.h
• linux/acpi.h
• linux/bitops.h
• linux/dmi.h
• linux/backlight.h
• linux/input.h
• linux/input/sparse-keymap.h
• linux/kfifo.h
• linux/leds.h
• linux/platform_device.h
• linux/power_supply.h
• acpi/battery.h
• acpi/video.h

Detected Declarations

• struct fujitsu_bl
• struct fujitsu_laptop
• function call_fext_func
• function charge_control_end_threshold_store
• function charge_control_end_threshold_show
• function fujitsu_battery_add_hook
• function fujitsu_battery_remove_hook
• function fujitsu_battery_charge_control_add
• function fujitsu_battery_charge_control_remove
• function set_lcd_level
• function get_lcd_level
• function get_max_brightness
• function bl_get_brightness
• function bl_update_status
• function lid_show
• function dock_show
• function radios_show
• function acpi_fujitsu_bl_input_setup
• function fujitsu_backlight_register
• function acpi_fujitsu_bl_notify
• function acpi_fujitsu_bl_probe
• function acpi_fujitsu_bl_remove
• function fujitsu_laptop_dmi_keymap_override
• function acpi_fujitsu_laptop_input_setup
• function fujitsu_laptop_platform_add
• function fujitsu_laptop_platform_remove
• function logolamp_set
• function logolamp_get
• function kblamps_set
• function kblamps_get
• function radio_led_set
• function radio_led_get
• function eco_led_set
• function eco_led_get
• function acpi_fujitsu_laptop_leds_register
• function acpi_fujitsu_laptop_press
• function acpi_fujitsu_laptop_release
• function acpi_fujitsu_laptop_notify
• function hotkey
• function acpi_fujitsu_laptop_probe
• function acpi_video_get_backlight_type
• function acpi_fujitsu_laptop_remove
• function fujitsu_init
• function fujitsu_cleanup
• module init fujitsu_init

Annotated Snippet

module_init(fujitsu_init);
module_exit(fujitsu_cleanup);

module_param(use_alt_lcd_levels, int, 0644);
MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)");
module_param(disable_brightness_adjust, bool, 0644);
MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment");

MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
MODULE_DESCRIPTION("Fujitsu laptop extras support");
MODULE_VERSION(FUJITSU_DRIVER_VERSION);
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/init.h`, `linux/acpi.h`, `linux/bitops.h`, `linux/dmi.h`, `linux/backlight.h`, `linux/input.h`.
• Detected declarations: `struct fujitsu_bl`, `struct fujitsu_laptop`, `function call_fext_func`, `function charge_control_end_threshold_store`, `function charge_control_end_threshold_show`, `function fujitsu_battery_add_hook`, `function fujitsu_battery_remove_hook`, `function fujitsu_battery_charge_control_add`, `function fujitsu_battery_charge_control_remove`, `function set_lcd_level`.
• Atlas domain: Driver Families / drivers/platform.
• 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.