[Intel-gfx] Request for feedback : New Panel-fitter property for connectors

[Chris Wilson]

On Wed, Feb 19, 2014 at 01:02:57PM +0200, Ville Syrjälä wrote:
> On Wed, Feb 19, 2014 at 09:33:11AM +0000, Goel, Akash wrote:
> > Thanks for your inputs.
> > 
> > Actually for our use cases, the 'scaling_mode' property currently being used for 'lvds' & 'dp', cannot be used as it is.
> > 
> > For our use cases, we need to provide a fine level control to User, so as to be able to choose the LetterBox/Pillar-box modes & also the Manual mode with horizontal & vertical scaling ratios.

You can extend the current interface to add the extra modes (letter,
pillarbox, and later the manual toggle).

> > Please provide suggestions, that how we can extend/reuse the 'scaling_mode' property here. 
> 
> My plan is to somehow expose the panel fitter input and output sizes
> explicitly at some point. The output size could be expose by adding
> borders to the display mode structure (or some border properties if we
> don't want to change the user visible mode struct). And the input size
> could also be done via properties.

Agreed, this is how we have talked about exposing the panel fitter for
arbitrary use by userspace (such as overscan compensation).
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre