Date: Fri, 19 Oct 2012 13:13:14 -0400 From: John Baldwin <jhb@freebsd.org> To: Alberto Villa <avilla@freebsd.org> Cc: freebsd-acpi@freebsd.org, Juergen Lock <nox@jelal.kn-bremen.de>, mobile@freebsd.org Subject: Re: Dell acpi_video patch Message-ID: <201210191313.14246.jhb@freebsd.org> In-Reply-To: <CAJp7RHac4pUd60LxLqq8exAUgi1ccKG66xS3oLqnsF=5whUUog@mail.gmail.com> References: <20121005215316.GA38707@triton8.kn-bremen.de> <201210191053.20041.jhb@freebsd.org> <CAJp7RHac4pUd60LxLqq8exAUgi1ccKG66xS3oLqnsF=5whUUog@mail.gmail.com>
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On Friday, October 19, 2012 11:41:56 am Alberto Villa wrote: > On Fri, Oct 19, 2012 at 4:53 PM, John Baldwin <jhb@freebsd.org> wrote: > > I'm looking at section B.4.2 in the 3.0b spec, it has a sample _DOD of: > > I've read section B.3.2 of 5.0 spec, which looks the same as 3.0b, but > my IDs don't have bit 31 set, they have bit 16 (which is the > difference between _DOD and _ADR you were probably talking about). Or > am I missing the point? Yes, unless bit 31 is set, we can't know anything about bits 0-15 except that they are "unique". Specifically, we can't look at the "Display Type" bits to determine if an output device is a CRT vs LCD vs TV, etc. You can only do that if bit 31 is set. -- John Baldwin
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