CFN
[CFN] = { 0x0012, 0x40, OMAP_DMA_REG_16BIT },
p->dma_write(frame_count, CFN, lch);
[CFN] = { 0x0098, 0x60, OMAP_DMA_REG_32BIT },
omap_dma_chan_write(c, CFN, sg->fn);