Re: [SeaBIOS] [PATCH] geodevga: make use of readl and writel for mmio access

[Kevin O'Connor]

On Tue, Jul 17, 2012 at 12:08:59PM +0200, Christian Gmeiner wrote:
> This commit just simplifies some code.

The old code looked to be triggering some kind of SMI to perform the
action.  Is it really that simple to just replace it with a direct
memory access?

-Kevin

[PATCH] geodevga: make use of readl and writel for mmio access

[Christian Gmeiner]

2012/7/18 Kevin O'Connor :
> On Tue, Jul 17, 2012 at 12:08:59PM +0200, Christian Gmeiner wrote:
> > This commit just simplifies some code.
>
> The old code looked to be triggering some kind of SMI to perform the
> action.  Is it really that simple to just replace it with a direct
> memory access?

I think so... I am using the linux driver for the geode lx/gx to add
flat panel support.
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=driver...

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=driver...

And have a look at the register access functions. The biggest problem
for me is that I don't have a geode based system with a normal VGA
connector. But the sources of the VSA is also open... so we may have a
loot at it?

---
Christian Gmeiner, MSc