115 	struct mxs_dma_desc *pdesc;  in mxs_dma_enable()  local
129 	pdesc = list_first_entry(&pchan->active, struct mxs_dma_desc, node);  in mxs_dma_enable()
130 	if (pdesc == NULL)  in mxs_dma_enable()
134 		if (!(pdesc->cmd.data & MXS_DMA_DESC_CHAIN))  in mxs_dma_enable()
142 			pdesc = list_entry(pdesc->node.next,  in mxs_dma_enable()
144 			writel(mxs_dma_cmd_address(pdesc),  in mxs_dma_enable()
154 		writel(mxs_dma_cmd_address(pdesc),  in mxs_dma_enable()
341 	struct mxs_dma_desc *pdesc;  in mxs_dma_desc_alloc()  local
345 	pdesc = memalign(MXS_DMA_ALIGNMENT, size);  in mxs_dma_desc_alloc()
347 	if (pdesc == NULL)  in mxs_dma_desc_alloc()
350 	memset(pdesc, 0, sizeof(*pdesc));  in mxs_dma_desc_alloc()
351 	pdesc->address = (dma_addr_t)pdesc;  in mxs_dma_desc_alloc()
353 	return pdesc;  in mxs_dma_desc_alloc()
359 void mxs_dma_desc_free(struct mxs_dma_desc *pdesc)  in mxs_dma_desc_free()  argument
361 	if (pdesc == NULL)  in mxs_dma_desc_free()
364 	free(pdesc);  in mxs_dma_desc_free()
406 int mxs_dma_desc_append(int channel, struct mxs_dma_desc *pdesc)  in mxs_dma_desc_append()  argument
418 	pdesc->cmd.next = mxs_dma_cmd_address(pdesc);  in mxs_dma_desc_append()
419 	pdesc->flags |= MXS_DMA_DESC_FIRST | MXS_DMA_DESC_LAST;  in mxs_dma_desc_append()
425 		pdesc->flags &= ~MXS_DMA_DESC_FIRST;  in mxs_dma_desc_append()
428 		last->cmd.next = mxs_dma_cmd_address(pdesc);  in mxs_dma_desc_append()
433 	pdesc->flags |= MXS_DMA_DESC_READY;  in mxs_dma_desc_append()
434 	if (pdesc->flags & MXS_DMA_DESC_FIRST)  in mxs_dma_desc_append()
436 	list_add_tail(&pdesc->node, &pchan->active);  in mxs_dma_desc_append()
438 	mxs_dma_flush_desc(pdesc);  in mxs_dma_desc_append()
459 	struct mxs_dma_desc *pdesc;  in mxs_dma_finish()  local
479 		pdesc = list_entry(p, struct mxs_dma_desc, node);  in mxs_dma_finish()
480 		pdesc->flags &= ~MXS_DMA_DESC_READY;  in mxs_dma_finish()
487 		if (pdesc->flags & MXS_DMA_DESC_LAST)  in mxs_dma_finish()
553 void mxs_dma_circ_start(int chan, struct mxs_dma_desc *pdesc)  in mxs_dma_circ_start()  argument
558 	mxs_dma_flush_desc(pdesc);  in mxs_dma_circ_start()
562 	writel(mxs_dma_cmd_address(pdesc),  in mxs_dma_circ_start()