Re: [PATCH 4/5] add cursor hotspot to drm_framebuffer

[Gerd Hoffmann]

On Di, 2016-05-31 at 15:36 +0300, Ville SyrjÃlà wrote:

> Why store it in the fb and not eg. the plane state?

Well, drm_plane_state is allocated by drm_atomic_helper_update_plane.

When sticking the hotspot into the the plane state we have to add hot_x
and hot_y parameters to drm_plane_funcs->update_plane() and cause quite
some churn all over the drm tree.

Or create a separate code path for cursor updates which uses a special
drm_atomic_helper_update_plane version, which doesn't look very
attractive too due to code duplication.

Sticking it into the drm_framebuffer instead looks like a reasonable
alternative.

I'm open to better suggestions.

cheers,
  Gerd