1*aaeccf36Sderaadt.\" $OpenBSD: led.4,v 1.4 2018/01/12 04:36:44 deraadt Exp $ 24c5f584fSkettenis.\" 34c5f584fSkettenis.\" Copyright (c) 2007 Mark Kettenis <kettenis@openbsd.org> 44c5f584fSkettenis.\" 54c5f584fSkettenis.\" Permission to use, copy, modify, and distribute this software for any 64c5f584fSkettenis.\" purpose with or without fee is hereby granted, provided that the above 74c5f584fSkettenis.\" copyright notice and this permission notice appear in all copies. 84c5f584fSkettenis.\" 94c5f584fSkettenis.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 104c5f584fSkettenis.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 114c5f584fSkettenis.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 124c5f584fSkettenis.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 134c5f584fSkettenis.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 144c5f584fSkettenis.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 154c5f584fSkettenis.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 164c5f584fSkettenis.\" 17*aaeccf36Sderaadt.Dd $Mdocdate: January 12 2018 $ 184c5f584fSkettenis.Dt LED 4 sparc64 194c5f584fSkettenis.Os 204c5f584fSkettenis.Sh NAME 214c5f584fSkettenis.Nm led 224c5f584fSkettenis.Nd SPARC64 LED driver 234c5f584fSkettenis.Sh SYNOPSIS 244c5f584fSkettenis.Cd "led* at ebus?" 254c5f584fSkettenis.Sh DESCRIPTION 264c5f584fSkettenisThe 274c5f584fSkettenis.Nm 284c5f584fSkettenisdriver provides support for the front panel alert LED. 294c5f584fSkettenisThis LED can be made to blink based on the load average on most systems 304c5f584fSkettenisby setting the 31*aaeccf36Sderaadt.Xr sysctl 2 324c5f584fSkettenisvariable 334c5f584fSkettenis.Ar machdep.led_blink 344c5f584fSkettenisto a non-zero value. 354c5f584fSkettenis.Sh SEE ALSO 36*aaeccf36Sderaadt.Xr sysctl 2 , 374c5f584fSkettenis.Xr ebus 4 , 384c5f584fSkettenis.Xr intro 4 , 394c5f584fSkettenis.Xr sysctl 8 404c5f584fSkettenis.Sh HISTORY 414c5f584fSkettenis.Ox 424c5f584fSkettenissupport for the 434c5f584fSkettenis.Nm 444c5f584fSkettenisfirst appeared in 454c5f584fSkettenis.Ox 4.2 . 464c5f584fSkettenis.Sh AUTHORS 474c5f584fSkettenisThe 484c5f584fSkettenis.Nm 494c5f584fSkettenisdriver was written by 50e5cc2e7eSschwarze.An Mark Kettenis Aq Mt kettenis@openbsd.org . 51