31 	struct mxs_dma_chan *pchan;  in mxs_dma_validate_chan()  local
36 	pchan = mxs_dma_channels + channel;  in mxs_dma_validate_chan()
37 	if (!(pchan->flags & MXS_DMA_FLAGS_ALLOCATED))  in mxs_dma_validate_chan()
113 	struct mxs_dma_chan *pchan;  in mxs_dma_enable()  local
121 	pchan = mxs_dma_channels + channel;  in mxs_dma_enable()
123 	if (pchan->pending_num == 0) {  in mxs_dma_enable()
124 		pchan->flags |= MXS_DMA_FLAGS_BUSY;  in mxs_dma_enable()
128 	pdesc = list_first_entry(&pchan->active, struct mxs_dma_desc, node);  in mxs_dma_enable()
132 	if (pchan->flags & MXS_DMA_FLAGS_BUSY) {  in mxs_dma_enable()
146 		writel(pchan->pending_num,  in mxs_dma_enable()
148 		pchan->active_num += pchan->pending_num;  in mxs_dma_enable()
149 		pchan->pending_num = 0;  in mxs_dma_enable()
151 		pchan->active_num += pchan->pending_num;  in mxs_dma_enable()
152 		pchan->pending_num = 0;  in mxs_dma_enable()
155 		writel(pchan->active_num,  in mxs_dma_enable()
161 	pchan->flags |= MXS_DMA_FLAGS_BUSY;  in mxs_dma_enable()
181 	struct mxs_dma_chan *pchan;  in mxs_dma_disable()  local
190 	pchan = mxs_dma_channels + channel;  in mxs_dma_disable()
192 	if (!(pchan->flags & MXS_DMA_FLAGS_BUSY))  in mxs_dma_disable()
198 	pchan->flags &= ~MXS_DMA_FLAGS_BUSY;  in mxs_dma_disable()
199 	pchan->active_num = 0;  in mxs_dma_disable()
200 	pchan->pending_num = 0;  in mxs_dma_disable()
201 	list_splice_init(&pchan->active, &pchan->done);  in mxs_dma_disable()
283 	struct mxs_dma_chan *pchan;  in mxs_dma_request()  local
288 	pchan = mxs_dma_channels + channel;  in mxs_dma_request()
289 	if ((pchan->flags & MXS_DMA_FLAGS_VALID) != MXS_DMA_FLAGS_VALID)  in mxs_dma_request()
292 	if (pchan->flags & MXS_DMA_FLAGS_ALLOCATED)  in mxs_dma_request()
295 	pchan->flags |= MXS_DMA_FLAGS_ALLOCATED;  in mxs_dma_request()
296 	pchan->active_num = 0;  in mxs_dma_request()
297 	pchan->pending_num = 0;  in mxs_dma_request()
299 	INIT_LIST_HEAD(&pchan->active);  in mxs_dma_request()
300 	INIT_LIST_HEAD(&pchan->done);  in mxs_dma_request()
315 	struct mxs_dma_chan *pchan;  in mxs_dma_release()  local
322 	pchan = mxs_dma_channels + channel;  in mxs_dma_release()
324 	if (pchan->flags & MXS_DMA_FLAGS_BUSY)  in mxs_dma_release()
327 	pchan->dev = 0;  in mxs_dma_release()
328 	pchan->active_num = 0;  in mxs_dma_release()
329 	pchan->pending_num = 0;  in mxs_dma_release()
330 	pchan->flags &= ~MXS_DMA_FLAGS_ALLOCATED;  in mxs_dma_release()
407 	struct mxs_dma_chan *pchan;  in mxs_dma_desc_append()  local
415 	pchan = mxs_dma_channels + channel;  in mxs_dma_desc_append()
420 	if (!list_empty(&pchan->active)) {  in mxs_dma_desc_append()
421 		last = list_entry(pchan->active.prev, struct mxs_dma_desc,  in mxs_dma_desc_append()
434 		pchan->pending_num++;  in mxs_dma_desc_append()
435 	list_add_tail(&pdesc->node, &pchan->active);  in mxs_dma_desc_append()
456 	struct mxs_dma_chan *pchan;  in mxs_dma_finish()  local
465 	pchan = mxs_dma_channels + channel;  in mxs_dma_finish()
471 	if (sem == pchan->active_num)  in mxs_dma_finish()
474 	list_for_each_safe(p, q, &pchan->active) {  in mxs_dma_finish()
475 		if ((pchan->active_num) <= sem)  in mxs_dma_finish()
484 			list_move_tail(p, &pchan->done);  in mxs_dma_finish()
487 			pchan->active_num--;  in mxs_dma_finish()
491 		pchan->flags &= ~MXS_DMA_FLAGS_BUSY;  in mxs_dma_finish()
597 	struct mxs_dma_chan *pchan;  in mxs_dma_init_channel()  local
600 	pchan = mxs_dma_channels + channel;  in mxs_dma_init_channel()
601 	pchan->flags = MXS_DMA_FLAGS_VALID;  in mxs_dma_init_channel()