DMAC_CHEN
ret = readl_poll_timeout_atomic(chan->chip->regs + DMAC_CHEN, val,
val = axi_dma_ioread32(chan->chip, DMAC_CHEN);
axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val);
val = axi_dma_ioread32(chan->chip, DMAC_CHEN);
axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val);
val = axi_dma_ioread64(chan->chip, DMAC_CHEN);
axi_dma_iowrite64(chan->chip, DMAC_CHEN, val);
val = axi_dma_ioread32(chan->chip, DMAC_CHEN);
axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val);
val = axi_dma_ioread64(chan->chip, DMAC_CHEN);
axi_dma_iowrite64(chan->chip, DMAC_CHEN, val);
val = axi_dma_ioread32(chan->chip, DMAC_CHEN);
axi_dma_iowrite32(chan->chip, DMAC_CHEN, (u32)val);
val = axi_dma_ioread64(chan->chip, DMAC_CHEN);
val = axi_dma_ioread32(chan->chip, DMAC_CHEN);