Am Dienstag, den 19.05.2015, 18:58 +0200 schrieb Daniel Vetter:
[...]
> > @@ -86,13 +93,36 @@ int ipu_plane_set_base(struct ipu_plane *ipu_plane,
> > struct drm_framebuffer *fb,
> > eba = cma_obj->paddr + fb->offsets[0] +
> > fb->pitches[0] * y + (fb->bits_per_pixel >> 3) * x;
> >
On Tue, May 19, 2015 at 06:06:01PM +0200, Philipp Zabel wrote:
> The IPUv3 can read 8-bit alpha values from a separate plane buffer using a
> companion IDMAC channel driven by the Alpha Transparency Controller (ATC)
> for the graphics channels. The conditional read mechanism allows to reduce
> memo
The IPUv3 can read 8-bit alpha values from a separate plane buffer using a
companion IDMAC channel driven by the Alpha Transparency Controller (ATC)
for the graphics channels. The conditional read mechanism allows to reduce
memory bandwidth by skipping reads of color data for completely transparent
