[PATCH] drm/radeon: add new AMD ACPI header and update relevant code

[Luca Tettamanti]

On Sun, Jul 29, 2012 at 11:51:48AM +0800, joeyli wrote:
> Hi Luca, 
> 
> 於 六，2012-07-28 於 16:56 +0200，Luca Tettamanti 提到：
> > I just found the first problem (probably a BIOS bug):
> > ATIF_FUNCTION_GET_SYSTEM_PARAMETERS is implemented in the DSDT, but the
> > corresponding bit ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED is not set :(
> > I intended to use the method to set up the notification handler but now
> > my BIOS says that it's not there even if it is...
> > Can I assume some default values (e.g. notifications are enabled and will
> > use 0x81 unless ATIF_FUNCTION_GET_SYSTEM_PARAMETERS says something
> > different)?
> > 
> 
> Did you check your DSDT for there have some "Notify (VGA, 0x81)"
> statement in AFN0..AFN15?
> If YES, I think that means your machine in case the 0x81 is for ATI used
> by default.

Yes, my point is that the nofication is there, but since
GET_SYSTEM_PARAMETERS is not announced I have not way to check it.
IOW, what is implemented in the DSDT does not match what is announced by
VERIFY_INTERFACE.
For reference this is the DSDT: http://pastebin.com/KKS7ZsTt

Luca