24 	struct dma_chan		*chan;  member
104 	if (dmaen->chan)  in rsnd_dmaen_stop()
105 		dmaengine_terminate_async(dmaen->chan);  in rsnd_dmaen_stop()
122 	if (dmaen->chan)  in rsnd_dmaen_cleanup()
123 		dma_release_channel(dmaen->chan);  in rsnd_dmaen_cleanup()
125 	dmaen->chan = NULL;  in rsnd_dmaen_cleanup()
139 	if (dmaen->chan)  in rsnd_dmaen_prepare()
147 	dmaen->chan = rsnd_dmaen_request_channel(io,  in rsnd_dmaen_prepare()
150 	if (IS_ERR_OR_NULL(dmaen->chan)) {  in rsnd_dmaen_prepare()
151 		dmaen->chan = NULL;  in rsnd_dmaen_prepare()
208 	ret = dmaengine_slave_config(dmaen->chan, &cfg);  in rsnd_dmaen_start()
212 	desc = dmaengine_prep_dma_cyclic(dmaen->chan,  in rsnd_dmaen_start()
235 	dma_async_issue_pending(dmaen->chan);  in rsnd_dmaen_start()
245 	struct dma_chan *chan = NULL;  in rsnd_dma_request_channel()  local
252 			chan = NULL;  in rsnd_dma_request_channel()
257 		if (i == rsnd_mod_id_raw(mod) && (!chan))  in rsnd_dma_request_channel()
258 			chan = of_dma_request_slave_channel(np, x);  in rsnd_dma_request_channel()
265 	return chan;  in rsnd_dma_request_channel()
274 	struct dma_chan *chan;  in rsnd_dmaen_attach()  local
277 	chan = rsnd_dmaen_request_channel(io, mod_from, mod_to);  in rsnd_dmaen_attach()
278 	if (IS_ERR_OR_NULL(chan)) {  in rsnd_dmaen_attach()
280 		if (PTR_ERR(chan) == -EPROBE_DEFER)  in rsnd_dmaen_attach()
281 			return PTR_ERR(chan);  in rsnd_dmaen_attach()
297 	io->dmac_dev = chan->device->dev;  in rsnd_dmaen_attach()
299 	dma_release_channel(chan);  in rsnd_dmaen_attach()
317 	status = dmaengine_tx_status(dmaen->chan, dmaen->cookie, &state);  in rsnd_dmaen_pointer()