Re: Fwd: Patch to control VGA bus routing and active VGA device.

[Greg KH]

On Thu, Jan 27, 2005 at 04:59:45AM -0500, Jon Smirl wrote:
> On Mon, 24 Jan 2005 20:24:59 -0800, Greg KH <greg@xxxxxxxxx> wrote:
> > This can be done today in the bus specific match functions.  And because
> > of that, I would argue that this belongs in the bus specific code, and
> > not in the driver core, as it's up to the bus to know what the different
> > types of "matches" that can happen, and what the priority is.
> 
> Here's a version of the VGA control code that actually works. It helps
> if I pci_enable() the device before using it. There was nothing wrong
> with the routing code.
> 
> I can also control multiple cards on the same bus by turning on/off
> their response to IO space and then enabling VGA via the standard
> ports. I can use this to move my console from card to card.
> 
> I have this code in drivers/pci because it needs to know add/remove
> from hotplug. Is there a better way to structure it? Note that this is
> not a VGA device, it is just a mechanism for controlling which VGA
> device is active.
> 
> Another item I need to add is generating an initial hotplug event for
> each secondary card. This event has to happen even if there is a card
> specific driver loaded. The event will be used to run the reset
> program needed by secondary cards.

Ick, patch wasn't inline for me to comment on it :(

Anyway, get rid of the ifdefs in the kernel .c code to start with.

thanks,

greg k-h
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