218 	struct imx_i2c_dma	*dma;  member
293 	struct imx_i2c_dma *dma;  in i2c_imx_dma_request()  local
298 	dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);  in i2c_imx_dma_request()
299 	if (!dma)  in i2c_imx_dma_request()
302 	dma->chan_tx = dma_request_slave_channel(dev, "tx");  in i2c_imx_dma_request()
303 	if (!dma->chan_tx) {  in i2c_imx_dma_request()
313 	ret = dmaengine_slave_config(dma->chan_tx, &dma_sconfig);  in i2c_imx_dma_request()
319 	dma->chan_rx = dma_request_slave_channel(dev, "rx");  in i2c_imx_dma_request()
320 	if (!dma->chan_rx) {  in i2c_imx_dma_request()
330 	ret = dmaengine_slave_config(dma->chan_rx, &dma_sconfig);  in i2c_imx_dma_request()
336 	i2c_imx->dma = dma;  in i2c_imx_dma_request()
337 	init_completion(&dma->cmd_complete);  in i2c_imx_dma_request()
339 		dma_chan_name(dma->chan_tx), dma_chan_name(dma->chan_rx));  in i2c_imx_dma_request()
344 	dma_release_channel(dma->chan_rx);  in i2c_imx_dma_request()
346 	dma_release_channel(dma->chan_tx);  in i2c_imx_dma_request()
348 	devm_kfree(dev, dma);  in i2c_imx_dma_request()
355 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_callback()  local
357 	dma_unmap_single(dma->chan_using->device->dev, dma->dma_buf,  in i2c_imx_dma_callback()
358 			dma->dma_len, dma->dma_data_dir);  in i2c_imx_dma_callback()
359 	complete(&dma->cmd_complete);  in i2c_imx_dma_callback()
365 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_xfer()  local
368 	struct device *chan_dev = dma->chan_using->device->dev;  in i2c_imx_dma_xfer()
370 	dma->dma_buf = dma_map_single(chan_dev, msgs->buf,  in i2c_imx_dma_xfer()
371 					dma->dma_len, dma->dma_data_dir);  in i2c_imx_dma_xfer()
372 	if (dma_mapping_error(chan_dev, dma->dma_buf)) {  in i2c_imx_dma_xfer()
377 	txdesc = dmaengine_prep_slave_single(dma->chan_using, dma->dma_buf,  in i2c_imx_dma_xfer()
378 					dma->dma_len, dma->dma_transfer_dir,  in i2c_imx_dma_xfer()
385 	reinit_completion(&dma->cmd_complete);  in i2c_imx_dma_xfer()
393 	dma_async_issue_pending(dma->chan_using);  in i2c_imx_dma_xfer()
398 	dma_unmap_single(chan_dev, dma->dma_buf,  in i2c_imx_dma_xfer()
399 			dma->dma_len, dma->dma_data_dir);  in i2c_imx_dma_xfer()
406 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_free()  local
408 	dma->dma_buf = 0;  in i2c_imx_dma_free()
409 	dma->dma_len = 0;  in i2c_imx_dma_free()
411 	dma_release_channel(dma->chan_tx);  in i2c_imx_dma_free()
412 	dma->chan_tx = NULL;  in i2c_imx_dma_free()
414 	dma_release_channel(dma->chan_rx);  in i2c_imx_dma_free()
415 	dma->chan_rx = NULL;  in i2c_imx_dma_free()
417 	dma->chan_using = NULL;  in i2c_imx_dma_free()
588 		if (i2c_imx->dma)  in i2c_imx_stop()
635 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_write()  local
638 	dma->chan_using = dma->chan_tx;  in i2c_imx_dma_write()
639 	dma->dma_transfer_dir = DMA_MEM_TO_DEV;  in i2c_imx_dma_write()
640 	dma->dma_data_dir = DMA_TO_DEVICE;  in i2c_imx_dma_write()
641 	dma->dma_len = msgs->len - 1;  in i2c_imx_dma_write()
656 				&i2c_imx->dma->cmd_complete,  in i2c_imx_dma_write()
659 		dmaengine_terminate_all(dma->chan_using);  in i2c_imx_dma_write()
697 	struct imx_i2c_dma *dma = i2c_imx->dma;  in i2c_imx_dma_read()  local
701 	dma->chan_using = dma->chan_rx;  in i2c_imx_dma_read()
702 	dma->dma_transfer_dir = DMA_DEV_TO_MEM;  in i2c_imx_dma_read()
703 	dma->dma_data_dir = DMA_FROM_DEVICE;  in i2c_imx_dma_read()
705 	dma->dma_len = msgs->len - 2;  in i2c_imx_dma_read()
711 				&i2c_imx->dma->cmd_complete,  in i2c_imx_dma_read()
714 		dmaengine_terminate_all(dma->chan_using);  in i2c_imx_dma_read()
812 	int use_dma = i2c_imx->dma && msgs->len >= DMA_THRESHOLD && !block_data;  in i2c_imx_read()
973 			if (i2c_imx->dma && msgs[i].len >= DMA_THRESHOLD)  in i2c_imx_xfer()
1182 	if (i2c_imx->dma)  in i2c_imx_remove()