Use getter and setter functions, for a variety of data types.
Signed-off-by: NJulia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/20210209211315.1261791-1-Julia.Lawall@inria.frSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>