NAME
acpi – Advanced Configuration and Power Interface
SYNOPSIS
acpi0 at bios?
DESCRIPTION
The acpi driver provides basic support for ACPI including loading ACPI tables from the firmware, parsing and interpreting AML code, event handling, suspending and powering off, and attaching device drivers. Userland may access acpi by using the apm(4) device.
The following devices can attach to acpi:
- abl(4)
-
Apple backlight support
- acpiac(4)
-
ACPI AC adapter
- acpials(4)
-
ACPI ambient light sensor
- acpiasus(4)
-
ASUS ACPI hotkeys
- acpibat(4)
-
ACPI control method battery
- acpibtn(4)
-
ACPI button
- acpicbkbd(4)
-
Chromebook keyboard backlight
- acpicmos(4)
-
CMOS memory manager
- acpicpu(4)
-
ACPI processor power and performance state
- acpidock(4)
-
ACPI docking station
- acpiec(4)
-
ACPI embedded controller
- acpige(4)
-
ACPI generic event device
- acpihid(4)
-
ACPI HID event and 5-button array
- acpihpet(4)
-
ACPI high precision event timer
- acpihve(4)
-
Hyper-V entropy
- acpimadt(4)
-
ACPI APIC configuration
- acpimcfg(4)
-
ACPI PCI Express configuration space
- acpipci(4)
-
ACPI PCI host bridge
- acpiprt(4)
-
ACPI PCI routing table configuration
- acpipwrres(4)
-
ACPI power resources
- acpisbs(4)
-
ACPI Smart Battery subsystem
- acpisony(4)
-
Sony ACPI control
- acpisurface(4)
-
Microsoft Surface Book ACPI support
- acpithinkpad(4)
-
IBM/Lenovo ThinkPad ACPI support
- acpitimer(4)
-
ACPI power management timer
- acpitoshiba(4)
-
Toshiba ACPI support
- acpitz(4)
-
ACPI thermal zone
- acpivideo(4)
-
ACPI video
- acpivout(4)
-
ACPI video output
- acpiwmi(4)
-
ACPI WMI interface
- ahci(4)
-
Advanced Host Controller Interface for Serial ATA
- aibs(4)
-
ASUSTeK AI Booster ACPI ATK0110 temperature, voltage, and fan sensor
- amdgpio(4)
-
AMD GPIO controller
- amdpmc(4)
-
AMD power management controller
- ampchwm(4)
-
Ampere Altra fine-grained power telemetry
- aplgpio(4)
-
Intel Apollo Lake GPIO controller
- asmc(4)
-
Apple System Management Controller (SMC)
- bse(4)
-
Broadcom GENET 10/100/1Gb Ethernet device
- bytgpio(4)
-
Intel Bay Trail GPIO controller
- ccp(4)
-
AMD cryptographic co-processor
- chvgpio(4)
-
Intel Cherry View GPIO controller
- dwgpio(4)
-
Synopsys DesignWare GPIO controller
- dwiic(4)
-
Synopsys DesignWare I2C controller
- glkgpio(4)
-
Intel Gemini Lake GPIO controller
- imxiic(4)
-
i.MX onboard I2C controller
- intelpmc(4)
-
Intel power management controller
- inthid(4)
-
Intel HID event and 5-button array devices
- iosf(4)
-
Intel OnChip System Fabric device
- ipmi(4)
-
Intelligent Platform Management Interface driver
- ispi(4)
-
Intel LPSS SPI controller
- pchgpio(4)
-
Intel PCH GPIO controller
- pckbc(4)
-
Keyboard controller
- pluart(4)
-
ARM PrimeCell PL011 UART
- qcgpio(4)
-
Qualcomm Snapdragon GPIO controller
- qciic(4)
-
Qualcomm Snapdragon GENI I2C controller
- sdhc(4)
-
SD Host Controller
- tpm(4)
-
Trusted Platform Module device
- ufshci(4)
-
Universal Flash Storage Host Controller Interface
FILES
- /dev/apm
-
Power management data device. May only be opened read-only. May be opened by multiple concurrent users.
- /dev/apmctl
-
Power management control device. May be opened read-write or write-only. May only be opened by one user at a time. An attempt to open the file when in use will fail, returning EBUSY.
SEE ALSO
HISTORY
The acpi driver first appeared in OpenBSD 3.8.
AUTHORS
The acpi driver was written by Thorsten Lockert ⟨[email protected]⟩ and Jordan Hargrave ⟨[email protected]⟩.