On Fri, Nov 21, 2014 at 03:28:32PM -0500, Rob Clark wrote: > Add helper macros to iterate the current, or incoming set of planes > attached to a crtc. These helpers are only available for drivers > converted to use atomic-helpers. > > Signed-off-by: Rob Clark <robdclark@xxxxxxxxx> > --- > Documentation/DocBook/drm.tmpl | 1 + > include/drm/drm_atomic_helper.h | 26 ++++++++++++++++++++++++++ > 2 files changed, 27 insertions(+) > > diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl > index 8c54f9a..3789f2d 100644 > --- a/Documentation/DocBook/drm.tmpl > +++ b/Documentation/DocBook/drm.tmpl > @@ -2343,6 +2343,7 @@ void intel_crt_init(struct drm_device *dev) > <title>Atomic State Reset and Initialization</title> > !Pdrivers/gpu/drm/drm_atomic_helper.c atomic state reset and initialization > </sect3> > +!Iinclude/drm/drm_atomic_helper.h > !Edrivers/gpu/drm/drm_atomic_helper.c > </sect2> > <sect2> > diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h > index 64b4e91..42d56e6 100644 > --- a/include/drm/drm_atomic_helper.h > +++ b/include/drm/drm_atomic_helper.h > @@ -96,5 +96,31 @@ drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector); > void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, > struct drm_connector_state *state); > > +/** > + * drm_crtc_for_each_plane - iterate over planes currently attached to crtc > + * @plane: the loop cursor > + * @crtc: the crtc whose planes are iterated > + * > + * This iterates over the current state, useful (for example) when applying > + * atomic state after it has been checked and swapped. To iterate over the > + * planes which *will* be attached (for ->atomic_check()) see > + * drm_crtc_for_each_pending_plane() > + */ > +#define drm_crtc_for_each_plane(plane, crtc) \ > + list_for_each_entry((plane), &(crtc)->dev->mode_config.plane_list, head) \ > + if ((crtc)->state->plane_mask & (1 << drm_plane_index(plane))) Implement this as drm_crtc_for_each_pending_plane(plane, (crtc)->state)? Which means _pending is a strange name ... -Daniel > + > +/** > + * drm_crtc_for_each_pending_plane - iterate over attached planes in new state > + * @plane: the loop cursor > + * @crtc_state: the incoming crtc-state > + * > + * Similar to drm_crtc_for_each_plane(), but iterates the planes that will be > + * attached if the specified state is applied. Useful during (for example) > + * ->atomic_check() operations, to validate the incoming state > + */ > +#define drm_crtc_for_each_pending_plane(plane, crtc_state) \ > + list_for_each_entry((plane), &(crtc_state)->state->dev->mode_config.plane_list, head) \ > + if ((crtc_state)->plane_mask & (1 << drm_plane_index(plane))) > > #endif /* DRM_ATOMIC_HELPER_H_ */ > -- > 1.9.3 > -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
