Video PM Methods

Matthew Garrett mjg59 at
Wed May 17 03:23:13 PDT 2006

On Tue, May 16, 2006 at 03:15:48PM -0400, Peter Jones wrote:

> Are you sure you really want this, rather than pci
> vendor:device:subvendor:subdevice for the video card?  BenH was telling
> me the other day that he's had good experience moving to the pci IDs
> rather than the DMI system-type field for the whitelisting of pm stuff
> in the radeonfb code.

If you're going to work at the subvendor:subdevice level then you're 
basically at the DMI level anyway[1]. The bits of video BIOS code that 
interact with the hardware in more "interesting" ways tend to be written 
by the hardware developers rather than the chipset developers - Intel 
provide their BIOSes with some hooks for machine-specific code.

[1] Except with less support for machines from vendors who haven't 
bothered to distinguish some of their platforms at the PCI ID 
Matthew Garrett | mjg59 at

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