32 	struct mxs_dma_chan *pchan;  in mxs_dma_validate_chan()  local
37 	pchan = mxs_dma_channels + channel;  in mxs_dma_validate_chan()
38 	if (!(pchan->flags & MXS_DMA_FLAGS_ALLOCATED))  in mxs_dma_validate_chan()
114 	struct mxs_dma_chan *pchan;  in mxs_dma_enable()  local
122 	pchan = mxs_dma_channels + channel;  in mxs_dma_enable()
124 	if (pchan->pending_num == 0) {  in mxs_dma_enable()
125 		pchan->flags |= MXS_DMA_FLAGS_BUSY;  in mxs_dma_enable()
129 	pdesc = list_first_entry(&pchan->active, struct mxs_dma_desc, node);  in mxs_dma_enable()
133 	if (pchan->flags & MXS_DMA_FLAGS_BUSY) {  in mxs_dma_enable()
147 		writel(pchan->pending_num,  in mxs_dma_enable()
149 		pchan->active_num += pchan->pending_num;  in mxs_dma_enable()
150 		pchan->pending_num = 0;  in mxs_dma_enable()
152 		pchan->active_num += pchan->pending_num;  in mxs_dma_enable()
153 		pchan->pending_num = 0;  in mxs_dma_enable()
156 		writel(pchan->active_num,  in mxs_dma_enable()
162 	pchan->flags |= MXS_DMA_FLAGS_BUSY;  in mxs_dma_enable()
182 	struct mxs_dma_chan *pchan;  in mxs_dma_disable()  local
191 	pchan = mxs_dma_channels + channel;  in mxs_dma_disable()
193 	if (!(pchan->flags & MXS_DMA_FLAGS_BUSY))  in mxs_dma_disable()
199 	pchan->flags &= ~MXS_DMA_FLAGS_BUSY;  in mxs_dma_disable()
200 	pchan->active_num = 0;  in mxs_dma_disable()
201 	pchan->pending_num = 0;  in mxs_dma_disable()
202 	list_splice_init(&pchan->active, &pchan->done);  in mxs_dma_disable()
284 	struct mxs_dma_chan *pchan;  in mxs_dma_request()  local
289 	pchan = mxs_dma_channels + channel;  in mxs_dma_request()
290 	if ((pchan->flags & MXS_DMA_FLAGS_VALID) != MXS_DMA_FLAGS_VALID)  in mxs_dma_request()
293 	if (pchan->flags & MXS_DMA_FLAGS_ALLOCATED)  in mxs_dma_request()
296 	pchan->flags |= MXS_DMA_FLAGS_ALLOCATED;  in mxs_dma_request()
297 	pchan->active_num = 0;  in mxs_dma_request()
298 	pchan->pending_num = 0;  in mxs_dma_request()
300 	INIT_LIST_HEAD(&pchan->active);  in mxs_dma_request()
301 	INIT_LIST_HEAD(&pchan->done);  in mxs_dma_request()
316 	struct mxs_dma_chan *pchan;  in mxs_dma_release()  local
323 	pchan = mxs_dma_channels + channel;  in mxs_dma_release()
325 	if (pchan->flags & MXS_DMA_FLAGS_BUSY)  in mxs_dma_release()
328 	pchan->dev = 0;  in mxs_dma_release()
329 	pchan->active_num = 0;  in mxs_dma_release()
330 	pchan->pending_num = 0;  in mxs_dma_release()
331 	pchan->flags &= ~MXS_DMA_FLAGS_ALLOCATED;  in mxs_dma_release()
408 	struct mxs_dma_chan *pchan;  in mxs_dma_desc_append()  local
416 	pchan = mxs_dma_channels + channel;  in mxs_dma_desc_append()
421 	if (!list_empty(&pchan->active)) {  in mxs_dma_desc_append()
422 		last = list_entry(pchan->active.prev, struct mxs_dma_desc,  in mxs_dma_desc_append()
435 		pchan->pending_num++;  in mxs_dma_desc_append()
436 	list_add_tail(&pdesc->node, &pchan->active);  in mxs_dma_desc_append()
457 	struct mxs_dma_chan *pchan;  in mxs_dma_finish()  local
466 	pchan = mxs_dma_channels + channel;  in mxs_dma_finish()
472 	if (sem == pchan->active_num)  in mxs_dma_finish()
475 	list_for_each_safe(p, q, &pchan->active) {  in mxs_dma_finish()
476 		if ((pchan->active_num) <= sem)  in mxs_dma_finish()
485 			list_move_tail(p, &pchan->done);  in mxs_dma_finish()
488 			pchan->active_num--;  in mxs_dma_finish()
492 		pchan->flags &= ~MXS_DMA_FLAGS_BUSY;  in mxs_dma_finish()
598 	struct mxs_dma_chan *pchan;  in mxs_dma_init_channel()  local
601 	pchan = mxs_dma_channels + channel;  in mxs_dma_init_channel()
602 	pchan->flags = MXS_DMA_FLAGS_VALID;  in mxs_dma_init_channel()