Re: [PATCH 06/14] drm/cirrus: Use 32bpp by default

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On Wed, Aug 23, 2017 at 09:10:09PM +0530, Varad Gautam wrote:
> Hi Matthew,
> 
> On Sat, Aug 19, 2017 at 2:02 PM, Matthew Garrett <mjg59@xxxxxxxxxxxxx> wrote:
> > On Fri, Aug 18, 2017 at 09:19:11PM +0530, Varad Gautam wrote:
> >> From: Stéphane Marchesin <marcheu@xxxxxxxxxxxx>
> >>
> >> initially reviewed for ChromiumOS at:
> >> https://chromium-review.googlesource.com/339093
> >> Signed-off-by: Stéphane Marchesin <marcheu@xxxxxxxxxxxx>
> >
> > 1280x1024x24 fits in 4MB, 1280x1024x32 doesn't. That seems like it's
> > going to be a visible change in behaviour.
> >
> 
> Right, 800x600 is the highest we can go for >24bpp, so we now switch
> to that instead of 1280x1024. fb creation fails in
> cirrus_check_framebuffer if the w*h*bpp doesn't fit, and plane updates
> get rejected when atomic is enabled later on.

So users who want 1280x1024 now have to change their configuration. Is 
that the intent? It seems odd to change user-visible behaviour for 
everyone just to fix ChromeOS in a VM.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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