i810 driver: Xv on mergefd

[Alan Hourihane]

On Mon, 2006-08-28 at 02:47 +0200, Erwin Rol wrote:
> On Sun, 2006-08-27 at 21:11 +0100, Alan Hourihane wrote:
> > On Sun, 2006-08-27 at 13:23 +0200, Erwin Rol wrote:
> > > On Sun, 2006-08-27 at 12:26 +0200, Rene Rebe wrote:
> > > > On Sunday 27 August 2006 12:19, Erwin Rol wrote:
> > > > > Hey all,
> > > > > 
> > > > > Is it possible to do Xv on a 852GM with mergedfb ? I have it working on
> > > > > one screen , but on the second screen i only get the blue ColorKey
> > > > > color.
> > > > 
> > > > I do not have the SPECs, but it is likely that the chip only has one
> > > > hardware overlay. The only thing that is doable in that case is an option
> > > > to force it on the first or second pipe.
> > > 
> > > this would not be a problem, because the video has to be full screen on
> > > screen 1 or full screen on screen 2, not on both at the same time, and
> > > not half on one and half on the other screen.
> > > 
> > > This worked fine on a  M9 radeon, that also has only one overlay, but it
> > > doesn't seem to work on the i810. I have one LCD panel connected to the
> > > LVDS output, and one to a VGA output, it works on the LVDS output, but
> > > on the VGA output it stays blue.
> > > 
> > > The VGA/CRT is Pipe A en the LVDS/LFP is Pipe B.
> > 
> > I've tested mergedfb with Xv on a 945G / 945GM and it works fine, and I
> > wouldn't expect problems on the 8xx series. 
> > 
> > As the Intel chips only have a single overlay the driver will only flip
> > the pipe when the video window has completely moved onto the new head. 
> > 
> > If that isn't occurring, then log it as a bug. If that works, but you
> > are attempting something else - can you describe the situation in more
> > detail ?
> 
> Seems to work after all, can it be that when the overlay is larger than
> the screen it also turns "blue" ? Like when the screen height is 768 and
> if the overlay height is 769 ?
> 
> My real problem is that i need mergedfb and modesetting, because i
> managed to hack the modesetting branch to work with my bad-BIOS (only
> has panel size 1024x768, and my panel is 1280x800). But that branch only
> does clone mode :-/ I asked before but is there any way to help with
> bringing modesetting to the master branch, i saw you (Alan) started
> another git repo to do this. 

Right. So you can use this code if you wish, but I don't expect the
modesetting code to go into the master until it can do everything that
the current BIOS driver can. 

Eric Anholt and Keith Packard have the documentation to drive the branch
forward and I'm not sure what their timescales are for doing this work. 

I don't want to merge the code I have either, as Intel may have a better
direction to implementation on some of this stuff too.

Alan.