diff options
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
-rw-r--r-- | drivers/gpu/drm/drm_plane.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index b373958ecb30..f61315b61174 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -1397,6 +1397,56 @@ out: return ret; } +/** + * drm_plane_get_damage_clips_count - Returns damage clips count. + * @state: Plane state. + * + * Simple helper to get the number of &drm_mode_rect clips set by user-space + * during plane update. + * + * Return: Number of clips in plane fb_damage_clips blob property. + */ +unsigned int +drm_plane_get_damage_clips_count(const struct drm_plane_state *state) +{ + return (state && state->fb_damage_clips) ? + state->fb_damage_clips->length/sizeof(struct drm_mode_rect) : 0; +} +EXPORT_SYMBOL(drm_plane_get_damage_clips_count); + +struct drm_mode_rect * +__drm_plane_get_damage_clips(const struct drm_plane_state *state) +{ + return (struct drm_mode_rect *)((state && state->fb_damage_clips) ? + state->fb_damage_clips->data : NULL); +} + +/** + * drm_plane_get_damage_clips - Returns damage clips. + * @state: Plane state. + * + * Note that this function returns uapi type &drm_mode_rect. Drivers might want + * to use the helper functions drm_atomic_helper_damage_iter_init() and + * drm_atomic_helper_damage_iter_next() or drm_atomic_helper_damage_merged() if + * the driver can only handle a single damage region at most. + * + * Return: Damage clips in plane fb_damage_clips blob property. + */ +struct drm_mode_rect * +drm_plane_get_damage_clips(const struct drm_plane_state *state) +{ + struct drm_device *dev = state->plane->dev; + struct drm_mode_config *config = &dev->mode_config; + + /* check that drm_plane_enable_fb_damage_clips() was called */ + if (!drm_mode_obj_find_prop_id(&state->plane->base, + config->prop_fb_damage_clips->base.id)) + drm_warn_once(dev, "drm_plane_enable_fb_damage_clips() not called\n"); + + return __drm_plane_get_damage_clips(state); +} +EXPORT_SYMBOL(drm_plane_get_damage_clips); + struct drm_property * drm_create_scaling_filter_prop(struct drm_device *dev, unsigned int supported_filters) |