edma_readl_chreg
u32 val = edma_readl_chreg(fsl_chan, ch_csr);
edma_writel_chreg(fsl_chan, edma_readl_chreg(fsl_chan, ch_csr), ch_csr);
val = edma_readl_chreg(fsl_chan, ch_sbr);
val = edma_readl_chreg(fsl_chan, ch_csr);
intr = edma_readl_chreg(fsl_chan, ch_int);
ch_es = edma_readl_chreg(chan, ch_es);
ch_err = edma_readl_chreg(fsl_chan, ch_es);
val = edma_readl_chreg(fsl_chan, ch_csr);