+ dri-devel
On Wed, Feb 28, 2018 at 4:33 AM, S, Shirish <shiris...@amd.com> wrote: > From: Shirish S <shiris...@amd.com> > > Add reverse iterator "for_each_oldnew_plane_in_state_reverse" to > complement "for_each_oldnew_plane_in_state" way of reading plane > states. > > The plane states are required to be read in reverse order for > amdgpu, as the z order convention followed in linux is > opposite to how the planes are supposed to be presented to DC > engine, which is in common to both windows and linux. > > Signed-off-by: Shirish S <shiris...@amd.com> > Signed-off-by: Pratik Vishwakarma <pratik.vishwaka...@amd.com> > --- > include/drm/drm_atomic.h | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > > diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h > index cf13842..b947930 100644 > --- a/include/drm/drm_atomic.h > +++ b/include/drm/drm_atomic.h > @@ -754,6 +754,28 @@ void drm_state_dump(struct drm_device *dev, struct > drm_printer *p); > (new_plane_state) = > (__state)->planes[__i].new_state, 1)) > > /** > + * for_each_oldnew_plane_in_state_reverse - iterate over all planes in an > atomic > + * update in reverse order > + * @__state: &struct drm_atomic_state pointer > + * @plane: &struct drm_plane iteration cursor > + * @old_plane_state: &struct drm_plane_state iteration cursor for the old > state > + * @new_plane_state: &struct drm_plane_state iteration cursor for the new > state > + * @__i: int iteration cursor, for macro-internal use > + * > + * This iterates over all planes in an atomic update in reverse order, > + * tracking both old and new state. This is useful in places where the > + * state delta needs to be considered, for example in atomic check functions. > + */ > +#define for_each_oldnew_plane_in_state_reverse(__state, plane, > old_plane_state, new_plane_state, __i) \ > + (for ((__i) = ((__state)->dev->mode_config.num_total_plane - 1); > \ > + (__i) >= 0; \ > + (__i)--) \ > + for_each_if ((__state)->planes[__i].ptr && \ > + ((plane) = (__state)->planes[__i].ptr, \ > + (old_plane_state) = > (__state)->planes[__i].old_state,\ > + (new_plane_state) = > (__state)->planes[__i].new_state, 1))) > + > +/** > * for_each_old_plane_in_state - iterate over all planes in an atomic update > * @__state: &struct drm_atomic_state pointer > * @plane: &struct drm_plane iteration cursor > -- > 2.7.4 > > _______________________________________________ > amd-gfx mailing list > amd-...@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
