Module Name: src
Committed By: nia
Date: Fri Feb 26 10:33:46 UTC 2021
Modified Files:
src/share/man/man4/man4.evbarm: Makefile vcaudio.4
Added Files:
src/share/man/man4/man4.evbarm: vchiq.4
Log Message:
Add a manual page for vchiq(4)
To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/share/man/man4/man4.evbarm/Makefile
cvs rdiff -u -r1.1 -r1.2 src/share/man/man4/man4.evbarm/vcaudio.4
cvs rdiff -u -r0 -r1.1 src/share/man/man4/man4.evbarm/vchiq.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/man4.evbarm/Makefile
diff -u src/share/man/man4/man4.evbarm/Makefile:1.10 src/share/man/man4/man4.evbarm/Makefile:1.11
--- src/share/man/man4/man4.evbarm/Makefile:1.10 Fri Feb 26 09:20:58 2021
+++ src/share/man/man4/man4.evbarm/Makefile Fri Feb 26 10:33:46 2021
@@ -1,7 +1,7 @@
-# $NetBSD: Makefile,v 1.10 2021/02/26 09:20:58 nia Exp $
+# $NetBSD: Makefile,v 1.11 2021/02/26 10:33:46 nia Exp $
MAN= awge.4 bcmgpio.4 cpsw.4 epgpio.4 gxio.4 intro.4 iopaau.4 iopwdog.4 \
- rktsadc.4 vcaudio.4
+ rktsadc.4 vcaudio.4 vchiq.4
MANSUBDIR=/evbarm
Index: src/share/man/man4/man4.evbarm/vcaudio.4
diff -u src/share/man/man4/man4.evbarm/vcaudio.4:1.1 src/share/man/man4/man4.evbarm/vcaudio.4:1.2
--- src/share/man/man4/man4.evbarm/vcaudio.4:1.1 Fri Feb 26 09:20:58 2021
+++ src/share/man/man4/man4.evbarm/vcaudio.4 Fri Feb 26 10:33:46 2021
@@ -1,4 +1,4 @@
-.\" $NetBSD: vcaudio.4,v 1.1 2021/02/26 09:20:58 nia Exp $
+.\" $NetBSD: vcaudio.4,v 1.2 2021/02/26 10:33:46 nia Exp $
.\"
.\" Copyright (c) 2021 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -54,7 +54,8 @@ The hardware does not support recording.
.Sh SEE ALSO
.Xr mixerctl 1 ,
.Xr audio 4 ,
-.Xr mixer 4
+.Xr mixer 4 ,
+.Xr vchiq 4
.Sh HISTORY
The
.Nm
Added files:
Index: src/share/man/man4/man4.evbarm/vchiq.4
diff -u /dev/null src/share/man/man4/man4.evbarm/vchiq.4:1.1
--- /dev/null Fri Feb 26 10:33:46 2021
+++ src/share/man/man4/man4.evbarm/vchiq.4 Fri Feb 26 10:33:46 2021
@@ -0,0 +1,64 @@
+.\" $NetBSD: vchiq.4,v 1.1 2021/02/26 10:33:46 nia Exp $
+.\"
+.\" Copyright (c) 2021 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``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 THE FOUNDATION OR CONTRIBUTORS
+.\" 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 February 26, 2021
+.Dt VCHIQ 4
+.Os
+.Sh NAME
+.Nm vchiq
+.Nd Broadcom VideoCore Host Interface device driver
+.Sh SYNOPSIS
+.Cd "vchiq* at simplebus?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the VideoCore 4 GPU messaging interface in
+Broadcom SoCs found in boards such as the Raspberry Pi.
+.Pp
+Libraries in pkgsrc provide OpenGL ES support and video decoding acceleration
+for the VideoCore 4 using the
+.Pa /dev/vchiq
+interface exposed to userland.
+.Pp
+Audio output support is provided by the kernel through
+.Xr vcaudio 4 ,
+which uses this messaging interface to the GPU internally.
+.Sh SEE ALSO
+.Xr bcmgpio 4 ,
+.Xr vcaudio 4 ,
+.Pa pkgsrc/misc/raspberrypi-userland ,
+.Pa pkgsrc/multimedia/omxplayer
+.Sh HISTORY
+The
+.Nm
+device driver appeared in
+.Nx 7.0 .
+.Sh BUGS
+.Pa /dev/vchiq
+does not follow the standard model for graphical acceleration on Unix-like
+systems, so applications have to be specially built to take advantage of it.
+The interface to userland also cannot be exposed by 64-bit or big endian
+kernels due to problems in the upstream Broadcom code.
