xref: /openbsd/share/man/man4/acpi.4 (revision 3cab2bb3)
1.\"	$OpenBSD: acpi.4,v 1.62 2020/06/02 16:24:24 jcs Exp $
2.\"
3.\" Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
4.\"
5.\" Permission to use, copy, modify, and distribute this software for any
6.\" purpose with or without fee is hereby granted, provided that the above
7.\" copyright notice and this permission notice appear in all copies.
8.\"
9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16.\"
17.Dd $Mdocdate: June 2 2020 $
18.Dt ACPI 4
19.Os
20.Sh NAME
21.Nm acpi
22.Nd Advanced Configuration and Power Interface
23.Sh SYNOPSIS
24.Cd "acpi0 at bios?"
25.Sh DESCRIPTION
26The
27.Nm
28driver provides basic support for ACPI including loading ACPI tables from
29the firmware, parsing and interpreting AML code, event handling,
30suspending and powering off, and attaching device drivers.
31Userland may access
32.Nm
33by using the
34.Xr apm 4
35device.
36.Pp
37The following devices can attach to
38.Nm :
39.Pp
40.Bl -tag -width "acpithinkpad(4)XXX" -offset indent -compact
41.It Xr acpiac 4
42ACPI AC adapter
43.It Xr acpials 4
44ACPI ambient light sensor
45.It Xr acpiasus 4
46ASUS ACPI hotkeys
47.It Xr acpibat 4
48ACPI control method battery
49.It Xr acpibtn 4
50ACPI button
51.It Xr acpicbkbd 4
52Chromebook keyboard backlight
53.It Xr acpicpu 4
54ACPI processor power and performance state
55.It Xr acpidock 4
56ACPI docking station
57.It Xr acpiec 4
58ACPI embedded controller
59.It Xr acpihid 4
60ACPI HID event and 5-button array
61.It Xr acpihpet 4
62ACPI high precision event timer
63.It Xr acpihve 4
64Hyper-V entropy
65.It Xr acpimadt 4
66ACPI APIC configuration
67.It Xr acpimcfg 4
68ACPI PCI Express configuration space
69.It Xr acpipci 4
70ACPI PCI host bridge
71.It Xr acpiprt 4
72ACPI PCI routing table configuration
73.It Xr acpipwrres 4
74ACPI power resources
75.It Xr acpisbs 4
76ACPI Smart Battery subsystem
77.It Xr acpisony 4
78Sony ACPI control
79.It Xr acpisurface 4
80Microsoft Surface Book ACPI support
81.It Xr acpithinkpad 4
82IBM/Lenovo ThinkPad ACPI support
83.It Xr acpitimer 4
84ACPI power management timer
85.It Xr acpitoshiba 4
86Toshiba ACPI support
87.It Xr acpitz 4
88ACPI thermal zone
89.It Xr acpivideo 4
90ACPI video
91.It Xr acpivout 4
92ACPI video output
93.It Xr aibs 4
94ASUSTeK AI Booster ACPI ATK0110 temperature, voltage, and fan sensor
95.It Xr amdgpio 4
96AMD GPIO controller
97.It Xr aplgpio 4
98Intel Apollo Lake GPIO controller
99.It Xr bse 4
100Broadcom GENET 10/100/Gigabit Ethernet device
101.It Xr bytgpio 4
102Intel Bay Trail GPIO controller
103.It Xr ccp 4
104AMD cryptographic co-processor
105.It Xr chvgpio 4
106Intel Cherry View GPIO controller
107.It Xr dwiic 4
108Synopsys DesignWare I2C controller
109.It Xr glkgpio 4
110Intel Gemini Lake GPIO controller
111.It Xr tpm 4
112Trusted Platform Module device
113.El
114.Sh FILES
115.Bl -tag -width "/dev/apmctlXXX"
116.It /dev/apm
117Power management data device.
118May only be opened read-only.
119May be opened by multiple concurrent users.
120.It /dev/apmctl
121Power management control device.
122May be opened read-write or write-only.
123May only be opened by one user at a time.
124An attempt to open the file when in use will fail, returning
125.Er EBUSY .
126.El
127.Sh SEE ALSO
128.Xr apm 4 ,
129.Xr intro 4
130.Sh HISTORY
131The
132.Nm
133driver first appeared in
134.Ox 3.8 .
135.Sh AUTHORS
136.An -nosplit
137The
138.Nm
139driver was written by
140.An Thorsten Lockert Aq Mt tholo@sigmasoft.com
141and
142.An Jordan Hargrave Aq Mt jordan@openbsd.org .
143