1.\" $OpenBSD: pwmleds.4,v 1.1 2022/11/23 23:47:05 kettenis Exp $ 2.\" 3.\" Copyright (c) 2021 Klemens Nanni <kn@openbsd.org> 4.\" Copyright (c) 2022 Mark Kettenis <kettenis@openbsd.org> 5.\" 6.\" Permission to use, copy, modify, and distribute this software for any 7.\" purpose with or without fee is hereby granted, provided that the above 8.\" copyright notice and this permission notice appear in all copies. 9.\" 10.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17.\" 18.Dd $Mdocdate: November 23 2022 $ 19.Dt PWMLEDS 4 20.Os 21.Sh NAME 22.Nm pwmleds 23.Nd PWM LEDs 24.Sh SYNOPSIS 25.Cd "pwmleds* at fdt?" 26.Sh DESCRIPTION 27The 28.Nm 29driver provides support for LEDs controlled by Pulse Width Modulation 30(PWM). 31.Pp 32Currently, only keyboard backlight LEDs are supported. 33.Sh SEE ALSO 34.Xr intro 4 35.Sh HISTORY 36The 37.Nm 38driver first appeared in 39.Ox 7.3 . 40.Sh AUTHORS 41.An -nosplit 42The 43.Nm 44driver was written by 45.An Mark Kettenis Aq Mt kettenis@openbsd.org . 46