ddc.4 revision 1.2
$NetBSD: ddc.4,v 1.2 2006/12/23 06:52:49 wiz Exp $
Copyright (c) 2006 Itronix Inc.
All rights reserved.
Written by Garrett D'Amore for Itronix Inc.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of Itronix Inc. may not be used to endorse
or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC.
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd May 11, 2006 .Dt DDC 4 .Os .Sh NAME .Nm ddc .Nd VESA Display Data Channel V2 devices .Sh SYNOPSIS .Cd "ddc at iic? addr 0x50" .Sh DESCRIPTION The .Nm driver provides support for accessing the VESA Display Data Channel Version 2 supported by many video displays. .Sh BUGS This driver does not provide any mechanism for access from user applications. Its only use at this point is to provide a means for framebuffer device drivers to query monitor description data (EDID) using a specialized in-kernel API. No support for sending control commands to display devices is provided. .Sh SEE ALSO .Xr iic 4 , .Xr ddc 9 , .Xr edid 9 .Sh HISTORY The .Nm device appeared in .Nx 4.0 . .Sh AUTHORS .An Garrett D'Amore Aq gdamore@NetBSD.org
Copyright (c) 2006 Itronix Inc.
All rights reserved.
Written by Garrett D'Amore for Itronix Inc.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of Itronix Inc. may not be used to endorse
or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC.
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd May 11, 2006 .Dt DDC 4 .Os .Sh NAME .Nm ddc .Nd VESA Display Data Channel V2 devices .Sh SYNOPSIS .Cd "ddc at iic? addr 0x50" .Sh DESCRIPTION The .Nm driver provides support for accessing the VESA Display Data Channel Version 2 supported by many video displays. .Sh BUGS This driver does not provide any mechanism for access from user applications. Its only use at this point is to provide a means for framebuffer device drivers to query monitor description data (EDID) using a specialized in-kernel API. No support for sending control commands to display devices is provided. .Sh SEE ALSO .Xr iic 4 , .Xr ddc 9 , .Xr edid 9 .Sh HISTORY The .Nm device appeared in .Nx 4.0 . .Sh AUTHORS .An Garrett D'Amore Aq gdamore@NetBSD.org