110 	struct at91_twi_dma dma;  member
177 	struct at91_twi_dma *dma = &dev->dma;  in at91_twi_dma_cleanup()  local
181 	if (dma->xfer_in_progress) {  in at91_twi_dma_cleanup()
182 		if (dma->direction == DMA_FROM_DEVICE)  in at91_twi_dma_cleanup()
183 			dmaengine_terminate_all(dma->chan_rx);  in at91_twi_dma_cleanup()
185 			dmaengine_terminate_all(dma->chan_tx);  in at91_twi_dma_cleanup()
186 		dma->xfer_in_progress = false;  in at91_twi_dma_cleanup()
188 	if (dma->buf_mapped) {  in at91_twi_dma_cleanup()
189 		dma_unmap_single(dev->dev, sg_dma_address(&dma->sg),  in at91_twi_dma_cleanup()
190 				 dev->buf_len, dma->direction);  in at91_twi_dma_cleanup()
191 		dma->buf_mapped = false;  in at91_twi_dma_cleanup()
217 	dma_unmap_single(dev->dev, sg_dma_address(&dev->dma.sg),  in at91_twi_write_data_dma_callback()
235 	struct at91_twi_dma *dma = &dev->dma;  in at91_twi_write_data_dma()  local
236 	struct dma_chan *chan_tx = dma->chan_tx;  in at91_twi_write_data_dma()
241 	dma->direction = DMA_TO_DEVICE;  in at91_twi_write_data_dma()
250 	dma->buf_mapped = true;  in at91_twi_write_data_dma()
252 	sg_dma_len(&dma->sg) = dev->buf_len;  in at91_twi_write_data_dma()
253 	sg_dma_address(&dma->sg) = dma_addr;  in at91_twi_write_data_dma()
255 	txdesc = dmaengine_prep_slave_sg(chan_tx, &dma->sg, 1, DMA_MEM_TO_DEV,  in at91_twi_write_data_dma()
265 	dma->xfer_in_progress = true;  in at91_twi_write_data_dma()
316 	dma_unmap_single(dev->dev, sg_dma_address(&dev->dma.sg),  in at91_twi_read_data_dma_callback()
329 	struct at91_twi_dma *dma = &dev->dma;  in at91_twi_read_data_dma()  local
330 	struct dma_chan *chan_rx = dma->chan_rx;  in at91_twi_read_data_dma()
332 	dma->direction = DMA_FROM_DEVICE;  in at91_twi_read_data_dma()
342 	dma->buf_mapped = true;  in at91_twi_read_data_dma()
344 	dma->sg.dma_address = dma_addr;  in at91_twi_read_data_dma()
345 	sg_dma_len(&dma->sg) = dev->buf_len - 2;  in at91_twi_read_data_dma()
347 	rxdesc = dmaengine_prep_slave_sg(chan_rx, &dma->sg, 1, DMA_DEV_TO_MEM,  in at91_twi_read_data_dma()
357 	dma->xfer_in_progress = true;  in at91_twi_read_data_dma()
359 	dma_async_issue_pending(dma->chan_rx);  in at91_twi_read_data_dma()
668 	struct at91_twi_dma *dma = &dev->dma;  in at91_twi_configure_dma()  local
679 	dma->chan_tx = dma_request_slave_channel_reason(dev->dev, "tx");  in at91_twi_configure_dma()
680 	if (IS_ERR(dma->chan_tx)) {  in at91_twi_configure_dma()
681 		ret = PTR_ERR(dma->chan_tx);  in at91_twi_configure_dma()
682 		dma->chan_tx = NULL;  in at91_twi_configure_dma()
686 	dma->chan_rx = dma_request_slave_channel_reason(dev->dev, "rx");  in at91_twi_configure_dma()
687 	if (IS_ERR(dma->chan_rx)) {  in at91_twi_configure_dma()
688 		ret = PTR_ERR(dma->chan_rx);  in at91_twi_configure_dma()
689 		dma->chan_rx = NULL;  in at91_twi_configure_dma()
694 	if (dmaengine_slave_config(dma->chan_tx, &slave_config)) {  in at91_twi_configure_dma()
701 	if (dmaengine_slave_config(dma->chan_rx, &slave_config)) {  in at91_twi_configure_dma()
707 	sg_init_table(&dma->sg, 1);  in at91_twi_configure_dma()
708 	dma->buf_mapped = false;  in at91_twi_configure_dma()
709 	dma->xfer_in_progress = false;  in at91_twi_configure_dma()
713 		 dma_chan_name(dma->chan_tx), dma_chan_name(dma->chan_rx));  in at91_twi_configure_dma()
720 	if (dma->chan_rx)  in at91_twi_configure_dma()
721 		dma_release_channel(dma->chan_rx);  in at91_twi_configure_dma()
722 	if (dma->chan_tx)  in at91_twi_configure_dma()
723 		dma_release_channel(dma->chan_tx);  in at91_twi_configure_dma()