[maemo-developers] Does anyone know the mechanism in Nokia's LCD driver?

[From: Igor Stoppa]

On Tue, 2009-01-13 at 12:23 +0200, ext Felipe Contreras wrote:
> On Tue, Jan 13, 2009 at 12:05 PM, Igor Stoppa <igor.stoppa at nokia.com> wrote:
> > Hi,
> > On Tue, 2009-01-13 at 18:06 +0800, ext Huang Gao (Gmail) wrote:
> >> Hi, Igor Stoppa:
> >>       Thank you for your reply!
> >>       So can I understand that this hardware FB is not contained in SDRAM
> >> or SRAM, and LCD will refresh itself from this hardware FB by its controller
> >> automatically, without the help of OMAP DMA channel?
> >
> > I'm in no way a display guy but iirc there are 2 modes for refresh:
> > -auto: whatever is written to the framebuffer goes through straight to
> > the LCD
> > -manual: the image needs to be flushed to the LCD
> >
> > If you are interested, you can check it from the kernel source files.
> 
> Would the manual mode help to avoid tearing?

but afaik it is already used by default

-- 

Cheers, Igor

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Igor Stoppa
Maemo Software - Nokia Devices R&D - Helsinki