Date: Mon, 1 Jun 2009 13:23:14 -0400 From: John Baldwin <jhb@freebsd.org> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r193159 - head/sys/powerpc/powermac Message-ID: <200906011323.15189.jhb@freebsd.org> In-Reply-To: <4A23FB40.1050405@freebsd.org> References: <200905311002.n4VA2K6c037776@svn.freebsd.org> <200906010822.19951.jhb@freebsd.org> <4A23FB40.1050405@freebsd.org>
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On Monday 01 June 2009 12:01:04 pm Nathan Whitehorn wrote: > John Baldwin wrote: > > On Sunday 31 May 2009 6:02:20 am Nathan Whitehorn wrote: > > > >> Author: nwhitehorn > >> Date: Sun May 31 10:02:20 2009 > >> New Revision: 193159 > >> URL: http://svn.freebsd.org/changeset/base/193159 > >> > >> Log: > >> Provide an analogous sysctl to hw.acpi.acline (dev.pmu.0.acline) to > >> determine whether the computer is plugged in to mains power. > >> > > > > I wonder if it would be a good idea to introduce a > > platform-independent 'acline' sysctl? Something like 'hw.acline'? For now > > we could simply have these devices create it. We could do something fancier > > where AC adapter drivers register with a centralized thingie at some point > > and it exports a global setting that is true so long as at least one adapter > > is online. I'm not sure that level of complexity is warranted until we have > > platforms with multiple AC lines exposed to the OS though. > > > That would be nice, and easy to implement, though the existing one > should be kept for a while for compatibility. In the longer term, pmu(4) > also provides an ACPI-alike interface to battery status under dev.pmu.*, > which it would likewise be good to report in a platform-independent way. Yes, the existing names would have to stay around for a while for compatability. -- John Baldwin
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