[PATCH 2/6] drm: add tile_group support. (v2)

[Dave Airlie]

> @@ -5156,3 +5158,100 @@ struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
>                                            supported_rotations);
>  }
>  EXPORT_SYMBOL(drm_mode_create_rotation_property);
> +
> +/**
> + * DOC: Tile group
> + *
> + * Tile groups are used to represent tiled monitors with a unique
> + * integer identifier. Tiled monitors using DisplayID v1.3 have
> + * a unique 8-byte handle, we store this in a tile group, so we
> + * have a common identifier for all tiles in a monitor group.
> + */
> +static void drm_tile_group_free(struct kref *kref)
> +{
> +       struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
> +       struct drm_device *dev = tg->dev;
> +       mutex_lock(&dev->mode_config.idr_mutex);
> +       idr_remove(&dev->mode_config.tile_idr, tg->id);
> +       mutex_lock(&dev->mode_config.idr_mutex);

Review not to self:

*un*lock.

Dave.