diff options
Diffstat (limited to 'share/man/man4/gpio.4')
| -rw-r--r-- | share/man/man4/gpio.4 | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/share/man/man4/gpio.4 b/share/man/man4/gpio.4 index 7811f68da89..eec07b25210 100644 --- a/share/man/man4/gpio.4 +++ b/share/man/man4/gpio.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: gpio.4,v 1.11 2007/11/17 16:55:05 mbalmer Exp $ +.\" $OpenBSD: gpio.4,v 1.12 2008/11/24 13:50:24 mbalmer Exp $ .\" .\" Copyright (c) 2004 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: November 17 2007 $ +.Dd $Mdocdate: November 24 2008 $ .Dt GPIO 4 .Os .Sh NAME @@ -149,6 +149,30 @@ On return the .Fa gp_caps field contains flags that are supported. If no flags are specified, the pin configuration stays unchanged. +.Pp +.It Dv GPIOATTACH (struct gpio_attach) +Attach the device described in the +.Fa gpio_attach +structure on this gpio device. +.Bd -literal +struct gpio_attach { + char ga_dvname[16]; /* device name */ + int ga_offset; /* pin number */ + u_int32_t ga_mask; /* binary mask */ +}; +.Ed +.Pp +.It Dv GPIODETACH (struct gpio_attach) +Detach a device from this gpio device that was previously attached using the +.Ar GPIOATTACH +.Xr ioctl 2 . +The +.Fa ga_offset +and +.Fa ga_mask +fields of the +.Fa gpio_attach +structure are ignored. .El .Sh FILES .Bl -tag -width "/dev/gpiou" -compact @@ -170,5 +194,7 @@ The .Nm driver was written by .An Alexander Yurchenko Aq grange@openbsd.org . +Runtime device attachment was added by +.An Marc Balmer Aq mbalmer@openbsd.org . .Sh BUGS Event capabilities are not supported. |