dist/drm/drm_blend.c

134  * zpos:
330  * drm_plane_create_zpos_property - create mutable zpos property
332  * @zpos: initial value of zpos property
333  * @min: minimal possible value of zpos property
334  * @max: maximal possible value of zpos property
336  * This function initializes generic mutable zpos property and enables support
339  * Drivers that attach a mutable zpos property to any plane should call the
341  * &drm_mode_config_funcs.atomic_check(), which will update the normalized zpos
345  * If zpos of some planes cannot be changed (like fixed background or
347  * planes immutable zpos property with lower or higher values (for more
349  * case driver should also assign proper initial zpos values for all planes in
354  * The property exposed to userspace is called "zpos".
360 				   unsigned int zpos,
365 	prop = drm_property_create_range(plane->dev, 0, "zpos", min, max);
369 	drm_object_attach_property(&plane->base, prop, zpos);
374 		plane->state->zpos = zpos;
375 		plane->state->normalized_zpos = zpos;
383  * drm_plane_create_zpos_immutable_property - create immuttable zpos property
385  * @zpos: value of zpos property
387  * This function initializes generic immutable zpos property and enables
391  * order. For mutable zpos see drm_plane_create_zpos_property().
393  * The property exposed to userspace is called "zpos".
399 					     unsigned int zpos)
404 					 "zpos", zpos, zpos);
408 	drm_object_attach_property(&plane->base, prop, zpos);
413 		plane->state->zpos = zpos;
414 		plane->state->normalized_zpos = zpos;
426 	if (sa->zpos != sb->zpos)
427 		return sa->zpos - sb->zpos;
443 	DRM_DEBUG_ATOMIC("[CRTC:%d:%s] calculating normalized zpos values\n",
462 		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] processing zpos value %d\n",
464 				 plane_state->zpos);
473 		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] normalized zpos value %d\n",
484  * drm_atomic_normalize_zpos - calculate normalized zpos values for all crtcs
488  * This function calculates normalized zpos value for all modified planes in
492  * it and calculates normalized zpos value for these planes. Planes are compared
493  * first by their zpos values, then by plane id (if zpos is equal). The plane
494  * with lowest zpos value is at the bottom. The &drm_plane_state.normalized_zpos
514 		if (old_plane_state->zpos != new_plane_state->zpos) {