1.\" 2.\" Copyright (c) 2004 OGAWA Takaya <t-ogawa@triaez.kaisei.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd February 25, 2012 29.Dt ACPI_PANASONIC 4 30.Os 31.Sh NAME 32.Nm acpi_panasonic 33.Nd "ACPI hotkey driver for Panasonic laptops" 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following line in your 37kernel configuration file: 38.Bd -ragged -offset indent 39.Cd "device acpi_panasonic" 40.Ed 41.Pp 42Alternatively, to load the driver as a 43module at boot time, place the following line in 44.Xr loader.conf 5 : 45.Bd -literal -offset indent 46acpi_panasonic_load="YES" 47.Ed 48.Sh DESCRIPTION 49The 50.Nm 51driver enables such hotkey facilities of various Panasonic laptops as 52changing LCD brightness, controlling mixer volumes, entering sleep or 53suspended state and so on. 54On the following models it is reported to work: Let's note (or 55Toughbook, outside Japan) CF-R1N, CF-R2A and CF-R3. 56It may also work on other models as well. 57.Pp 58The driver consists of three functionalities. 59The first is to detect hotkey events and take corresponding actions, 60which include changing LCD luminance and speaker mute state. 61The second role is to notify occurrences of the event by way of 62.Xr devctl 4 63and eventually to 64.Xr devd 8 . 65The third and last is to provide a way to adjust LCD brightness and 66sound mute state via 67.Xr sysctl 8 . 68.Ss Hotkeys 69There are 9 hotkeys available on the supported hardware: 70.Pp 71.Bl -tag -width 10n -compact -offset indent 72.It Sy Fn+F1 73Make LCD backlight darker. 74.It Sy Fn+F2 75Make LCD backlight brighter. 76.It Sy Fn+F3 77Switch video output between LCD and CRT. 78Not supported by the 79.Nm 80driver. 81.It Sy Fn+F4 82Toggle muting the speaker. 83.It Sy Fn+F5 84Turn the mixer volume down. 85.It Sy Fn+F6 86Turn the mixer volume up. 87.It Sy Fn+F7 88Enter suspend-to-RAM state. 89.It Sy Fn+F9 90Show battery status. 91.It Sy Fn+F10 92Enter suspend-to-disk state. 93.El 94.Pp 95Actions are automatically taken within the driver for 96.Sy Fn+F1 , Fn+F2 97and 98.Sy Fn+F4 . 99For the other events such as 100mixer control and showing battery status, 101.Xr devd 8 102should take the role as described below. 103.Ss Xr devd 8 Ss Events 104When notified to 105.Xr devd 8 , 106the hotkey event provides the following information: 107.Pp 108.Bl -tag -width 10n -compact -offset indent 109.It system 110.Qq Li ACPI 111.It subsystem 112.Qq Li Panasonic 113.It type 114The source of the event in ACPI namespace. 115The value depends on the model but typically 116.Qq Li \e_SB_.HKEY . 117.It notify 118Event code (see below). 119.El 120.Pp 121Event codes to be generated are assigned as follows: 122.Bl -tag -width 10n -offset indent 123.It 0x81-0x86, 0x89 124.Sy Fn+F<n> 125pressed. 1260x81 corresponds to 127.Sy Fn+F1 , 1280x82 corresponds to 129.Sy Fn+F2 , 130and so on. 131.It 0x01-0x07, 0x09, 0x1a 132.Sy Fn+F<n> 133released. 1340x01 corresponds to 135.Sy Fn+F1 , 1360x02 corresponds to 137.Sy Fn+F2 , 138and so on. 139.El 140.Sh SYSCTL VARIABLES 141The following MIBs are available: 142.Bl -tag -width indent 143.It Va hw.acpi.panasonic.lcd_brightness_max 144The maximum level of brightness. 145The value is read only and 146automatically set according to hardware model. 147.It Va hw.acpi.panasonic.lcd_brightness_min 148The minimum level of brightness. 149The value is read only and 150automatically set according to hardware model. 151.It Va hw.acpi.panasonic.lcd_brightness 152Current brightness level of the LCD (read-write). 153The value ranges from 154.Va hw.acpi.panasonic.lcd_brightness_min 155to 156.Va hw.acpi.panasonic.lcd_brightness_max . 157.It Va hw.acpi.panasonic.sound_mute 158A read-write boolean flag to control whether to mute the speaker. 159The value 1 means to mute and 0 not. 160.El 161.Sh SEE ALSO 162.Xr acpi 4 , 163.Xr devd.conf 5 , 164.Xr devd 8 , 165.Xr sysctl 8 166.Sh HISTORY 167The 168.Nm 169driver first appeared in 170.Fx 5.3 . 171.Sh AUTHORS 172.An -nosplit 173The 174.Nm 175driver and this manual page were written by 176.An OGAWA Takaya Aq t\-ogawa@triaez.kaisei.org 177and 178.An TAKAHASHI Yoshihiro Aq nyan@FreeBSD.org . 179