1.\" $OpenBSD: acpisurface.4,v 1.2 2018/07/01 05:47:16 jmc Exp $ 2.\" 3.\" Copyright (c) 2018 Mike Larkin <mlarkin@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: July 1 2018 $ 18.Dt ACPISURFACE 4 19.Os 20.Sh NAME 21.Nm acpisurface 22.Nd Microsoft Surface Book ACPI support 23.Sh SYNOPSIS 24.Cd "acpisurface* at acpi?" 25.Sh DESCRIPTION 26The 27.Nm 28driver provides ACPI support for Microsoft Surface Book laptops. 29It responds to various button presses such as volume up/down and power 30buttons, all of which are located on the top of the tablet/detachable display. 31It does not provide support for the hotkeys in the keyboard/base unit. 32.Pp 33Volume up/down button presses are routed to the master system mixer via the 34.Xr wscons 4 35subsystem. 36Power button presses result in a soft power off request being queued by the 37.Xr acpi 4 38subsystem. 39.Sh SEE ALSO 40.Xr acpi 4 , 41.Xr audio 4 , 42.Xr wscons 4 43.Sh HISTORY 44The 45.Nm 46driver first appeared in 47.Ox 6.4 . 48