Document SYNOPSIS for attachment of these devices at runtime.

2 files changed, 33 insertions, 7 deletions

diff --git a/share/man/man4/gpioiic.4 b/share/man/man4/gpioiic.4
index 692a03ffc77..69bf26d190d 100644
--- a/share/man/man4/gpioiic.4
+++ b/share/man/man4/gpioiic.4
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: gpioiic.4,v 1.4 2007/05/31 19:19:50 jmc Exp $
+.\"	$OpenBSD: gpioiic.4,v 1.5 2008/11/24 14:17:57 mbalmer Exp $
 .\"
 .\" Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: May 31 2007 $
+.Dd $Mdocdate: November 24 2008 $
 .Dt GPIOIIC 4
 .Os
 .Sh NAME
@@ -22,6 +22,7 @@
 .Nd GPIO I2C controller
 .Sh SYNOPSIS
 .Cd "gpioiic* at gpio? offset 0 mask 0x3"
+.Cd "gpioiic* at gpio?"
 .Cd "iic* at gpioiic?"
 .Sh DESCRIPTION
 The
@@ -32,11 +33,23 @@ a serial clock (SCL).
 Both GPIO pins must be able to drive an output and the SDA pin must be
 also able to read an input.
 .Pp
-The pins are specified in the kernel configuration with the
+The pins can be specified in the kernel configuration with the
 .Ar offset
 and the
 .Ar mask
 locators.
+The
+.Ar offset
+and
+.Ar mask
+can also be specified when
+.Nm
+is attached at runtime using the
+.Ar GPIOATTACH
+.Xr ioctl 2
+on the
+.Xr gpio 4
+device.
 Each bit in the
 .Ar mask
 locator defines one pin; the pin number is calculated as an addition of
diff --git a/share/man/man4/gpioow.4 b/share/man/man4/gpioow.4
index d31dc044a21..b9e833cf074 100644
--- a/share/man/man4/gpioow.4
+++ b/share/man/man4/gpioow.4
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: gpioow.4,v 1.4 2007/05/31 19:19:50 jmc Exp $
+.\"	$OpenBSD: gpioow.4,v 1.5 2008/11/24 14:17:57 mbalmer Exp $
 .\"
 .\" Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: May 31 2007 $
+.Dd $Mdocdate: November 24 2008 $
 .Dt GPIOOW 4
 .Os
 .Sh NAME
@@ -22,6 +22,7 @@
 .Nd 1-Wire bus bit-banging through GPIO pin
 .Sh SYNOPSIS
 .Cd "gpioow* at gpio? offset 0 mask 0x1"
+.Cd "gpioow* at gpio?"
 .Cd "onewire* at gpioow?"
 .Sh DESCRIPTION
 The
@@ -30,12 +31,24 @@ driver allows bit-banging a 1-Wire bus as a master using one GPIO pin.
 The pin is used as a data signal.
 The GPIO pin must be able to drive an output and read an input.
 .Pp
-The pin number is specified in the kernel configuration with the
+The pin number can specified in the kernel configuration with the
 .Ar offset
 locator.
 The
 .Ar mask
-locator should always be 0x1.
+locator should always be 0x1 in this case.
+The
+.Ar offset
+and
+.Ar mask
+can also be specified when
+.Nm
+is attached at runtime using the
+.Ar GPIOATTACH
+.Xr ioctl 2
+on the
+.Xr gpio 4
+device.
 .Sh SEE ALSO
 .Xr gpio 4 ,
 .Xr intro 4 ,