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Date: Wed, 24 May 2006 14:39:57 +0400
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Thread-Topic: Call for testing: emu10kx driver for Creative sound cards
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From: "Yuriy Tsibizov" <Yuriy.Tsibizov@gfk.ru>
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Cc: freebsd-multimedia@FreeBSD.org, des@des.no, freebsd-current@FreeBSD.org,
	Alexander@Leidinger.net
Subject: RE: Call for testing: emu10kx driver for Creative sound cards
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> + .Pp
> + Sysctl nodes provided by drivers should not be considered to be
> + permanant unless they are documented in the driver's man page.
> + Names which start with _ denote a tree or node which is considered
> + impermanant and should not be relied up by code elsewhere in the
> + system.
> + Driver writers should use the sysctl infrastructure provided by
> + .Xr device_get_sysctl_ctx 9=20
> + and
> + .Xr device_get_sysctl_tree 9
> + for their sysctls.
> + Drivers should migrate from past interfaces to this new=20
> interface, but
> + provide, where needed, backwards compatibility shims.
> + These facilities export the sysctl as=20
> dev.<driver-name>.<unit>.attribute.

Should sound drivers (pcm* device) be documented as an exception from =
this?=20
They use snd_sysctl_tree_top() to get tree OID under hw.snd.pcmX and=20
snd_sysctl_tree() to get their context.

Yuriy.