Re: FW: [PATCH v8 3/9] drm/i915: Make sprite updates atomic

Ville Syrjälä
2014-05-19T10:49:59Z

On Mon, May 19, 2014 at 04:08:09PM +0530, Arun Murthy wrote:
> > Add a mechanism by which we can evade the leading edge of vblank. This
> > guarantees that no two sprite register writes will straddle on either
> > side of the vblank start, and that means all the writes will be latched
> > together in one atomic operation.
>
>
> Here only one sprite update followed by the primary enable/disable can be
> achieved atomically. But I feel update of all planes are to be considered, i.e
> update of planes per pipe basis to achieve atomicity.

That's the final goal. This patch introduces the mechanism by which
we can eventually implement the full atomic update.

--
Ville Syrjälä
Intel OTC