Re: [RFC] enhancing the kernel's graphics subsystem

["Antonino A. Daplas" <adaplas@gmail.com>]

On Tue, 2007-05-22 at 16:36 -0700, Jesse Barnes wrote:
> On Tuesday, May 22, 2007, Benjamin Herrenschmidt wrote:
> > On Tue, 2007-05-22 at 08:39 -0700, Jesse Barnes wrote:
> > > The current code does its best to figure out what modes are available
> > > and tries to pick a good one for each display.  It sounds like you're
> > > mainly concerned with the actual mode picking, not the mode and output
> > > detection and enumeration?  If so, that's a pretty easy change to
> > > make.  But if you're also worried about the kernel building mode
> > > lists, then we'll have bigger changes to make...
> >
> > I'm worried that the EDID we get from the monitor is bogus and needs to
> > be overriden.
> >
> > Now, if the kernel builds a mode list, that's find if we have a call to
> > "feed" it with a replacement one later on from userland.
> >
> > In addition, there are all those monitors that cannot be probed (no
> > DDC/EDID) and for which only userland can reasonably provide a mode or a
> > mode list.
> 
> Yeah, we already have a call to add modes to the kernel's list, so we 
> should be covered.
> 

We actually have a function that will replace the entire mode list with
a new one safely.

Tony