114 	struct mxs_dma_desc *pdesc;  in mxs_dma_enable()  local
128 	pdesc = list_first_entry(&pchan->active, struct mxs_dma_desc, node);  in mxs_dma_enable()
129 	if (pdesc == NULL)  in mxs_dma_enable()
133 		if (!(pdesc->cmd.data & MXS_DMA_DESC_CHAIN))  in mxs_dma_enable()
141 			pdesc = list_entry(pdesc->node.next,  in mxs_dma_enable()
143 			writel(mxs_dma_cmd_address(pdesc),  in mxs_dma_enable()
153 		writel(mxs_dma_cmd_address(pdesc),  in mxs_dma_enable()
340 	struct mxs_dma_desc *pdesc;  in mxs_dma_desc_alloc()  local
344 	pdesc = memalign(MXS_DMA_ALIGNMENT, size);  in mxs_dma_desc_alloc()
346 	if (pdesc == NULL)  in mxs_dma_desc_alloc()
349 	memset(pdesc, 0, sizeof(*pdesc));  in mxs_dma_desc_alloc()
350 	pdesc->address = (dma_addr_t)pdesc;  in mxs_dma_desc_alloc()
352 	return pdesc;  in mxs_dma_desc_alloc()
358 void mxs_dma_desc_free(struct mxs_dma_desc *pdesc)  in mxs_dma_desc_free()  argument
360 	if (pdesc == NULL)  in mxs_dma_desc_free()
363 	free(pdesc);  in mxs_dma_desc_free()
405 int mxs_dma_desc_append(int channel, struct mxs_dma_desc *pdesc)  in mxs_dma_desc_append()  argument
417 	pdesc->cmd.next = mxs_dma_cmd_address(pdesc);  in mxs_dma_desc_append()
418 	pdesc->flags |= MXS_DMA_DESC_FIRST | MXS_DMA_DESC_LAST;  in mxs_dma_desc_append()
424 		pdesc->flags &= ~MXS_DMA_DESC_FIRST;  in mxs_dma_desc_append()
427 		last->cmd.next = mxs_dma_cmd_address(pdesc);  in mxs_dma_desc_append()
432 	pdesc->flags |= MXS_DMA_DESC_READY;  in mxs_dma_desc_append()
433 	if (pdesc->flags & MXS_DMA_DESC_FIRST)  in mxs_dma_desc_append()
435 	list_add_tail(&pdesc->node, &pchan->active);  in mxs_dma_desc_append()
437 	mxs_dma_flush_desc(pdesc);  in mxs_dma_desc_append()
458 	struct mxs_dma_desc *pdesc;  in mxs_dma_finish()  local
478 		pdesc = list_entry(p, struct mxs_dma_desc, node);  in mxs_dma_finish()
479 		pdesc->flags &= ~MXS_DMA_DESC_READY;  in mxs_dma_finish()
486 		if (pdesc->flags & MXS_DMA_DESC_LAST)  in mxs_dma_finish()
552 void mxs_dma_circ_start(int chan, struct mxs_dma_desc *pdesc)  in mxs_dma_circ_start()  argument
557 	mxs_dma_flush_desc(pdesc);  in mxs_dma_circ_start()
561 	writel(mxs_dma_cmd_address(pdesc),  in mxs_dma_circ_start()