The patch series of 4 patches contain some pl330 driver cleanups and implement free running mode for cyclic transfers. It affect recent patches for pl330. Please review it and check on real boards (if possible).
Rebased on top of branch 'topic/pl330' of https://git.kernel.org/cgit/linux/kernel/git/vkoul/slave-dma.git/ Tested on rk3188 Radxa rock board.
