firewire/motu/motu-stream.c

34 	int err;
52 	err = amdtp_motu_set_parameters(stream, rate, midi_ports,
54 	if (err < 0)
55 		return err;
66 	int err;
69 	err = snd_motu_transaction_read(motu, ISOC_COMM_CONTROL_OFFSET, &reg,
71 	if (err < 0)
72 		return err;
89 	int err;
91 	err = snd_motu_protocol_switch_fetching_mode(motu, false);
92 	if (err < 0)
95 	err = snd_motu_transaction_read(motu, ISOC_COMM_CONTROL_OFFSET, &reg,
97 	if (err < 0)
111 	int err;
113 	err = snd_motu_protocol_cache_packet_formats(motu);
114 	if (err < 0)
115 		return err;
141 	int err;
143 	err = snd_motu_protocol_get_clock_rate(motu, &curr_rate);
144 	if (err < 0)
145 		return err;
159 		err = snd_motu_protocol_set_clock_rate(motu, rate);
160 		if (err < 0) {
162 				"fail to set sampling rate: %d\n", err);
163 			return err;
166 		err = snd_motu_stream_cache_packet_formats(motu);
167 		if (err < 0)
168 			return err;
170 		err = keep_resources(motu, rate, &motu->tx_stream);
171 		if (err < 0)
172 			return err;
174 		err = keep_resources(motu, rate, &motu->rx_stream);
175 		if (err < 0) {
177 			return err;
180 		err = amdtp_domain_set_events_per_period(&motu->domain,
182 		if (err < 0) {
185 			return err;
205 	int err;
207 	err = snd_motu_transaction_read(motu, PACKET_FORMAT_OFFSET, &reg,
209 	if (err < 0)
210 		return err;
230 	int err = 0;
242 		err = fw_iso_resources_update(&motu->rx_resources);
243 		if (err < 0)
244 			return err;
246 		err = fw_iso_resources_update(&motu->tx_resources);
247 		if (err < 0)
248 			return err;
254 		err = ensure_packet_formats(motu);
255 		if (err < 0)
256 			return err;
259 			err = snd_motu_register_dsp_message_parser_init(motu);
260 			if (err < 0)
261 				return err;
263 			err = snd_motu_command_dsp_message_parser_init(motu, motu->tx_stream.sfc);
264 			if (err < 0)
265 				return err;
268 		err = begin_session(motu);
269 		if (err < 0) {
271 				"fail to start isochronous comm: %d\n", err);
275 		err = amdtp_domain_add_stream(&motu->domain, &motu->tx_stream,
277 		if (err < 0)
280 		err = amdtp_domain_add_stream(&motu->domain, &motu->rx_stream,
282 		if (err < 0)
293 		err = amdtp_domain_start(&motu->domain, 0, true, false);
294 		if (err < 0)
298 			err = -ETIMEDOUT;
302 		err = snd_motu_protocol_switch_fetching_mode(motu, true);
303 		if (err < 0) {
305 				"fail to enable frame fetching: %d\n", err);
315 	return err;
336 	int err;
346 	err = fw_iso_resources_init(resources, motu->unit);
347 	if (err < 0)
348 		return err;
350 	err = amdtp_motu_init(s, motu->unit, dir, motu->spec, &motu->cache);
351 	if (err < 0)
354 	return err;
369 	int err;
371 	err = init_stream(motu, &motu->tx_stream);
372 	if (err < 0)
373 		return err;
375 	err = init_stream(motu, &motu->rx_stream);
376 	if (err < 0) {
378 		return err;
381 	err = amdtp_domain_init(&motu->domain);
382 	if (err < 0) {
387 	return err;
410 	int err;
415 		err = -EBUSY;
421 	err = 0;
424 	return err;