Messages in this thread | | | Date | Tue, 15 Mar 2011 13:32:40 +0000 | From | Matthew Garrett <> | Subject | Re: [Intel-gfx] [PATCH] ACPI/Intel: Rework Opregion support |
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On Tue, Mar 15, 2011 at 02:30:55PM +0100, Olivier Galibert wrote: > On Tue, Mar 15, 2011 at 01:52:26AM +0000, Matthew Garrett wrote: > > Now that we've got multiple consumers it's probably not helpful to move > > the (potentially chip-specific) VBT handling to general code. We've got > > zero documentation on how GMA500 handles VBT, and not a great deal more > > for i915. > > I'm not sure what you mean by "handles". If you mean find it, the > gma500 driver code reads a 32-bit pointer to the opregion at offset > 0xfc in the pci configuration space. If you mean parse it, I haven't > seen anything that looked different to what the current kernel code > parses.
Opregion is one mechanism to provide VBT - it doesn't define it.
-- Matthew Garrett | mjg59@srcf.ucam.org
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