27 int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate,  in snd_dice_stream_get_rate_mode()  argument
33 		if (!(dice->clock_caps & BIT(i)))  in snd_dice_stream_get_rate_mode()
44 static void release_resources(struct snd_dice *dice,  in release_resources()  argument
51 	if (resources == &dice->tx_resources)  in release_resources()
52 		snd_dice_transaction_write_tx(dice, TX_ISOCHRONOUS,  in release_resources()
55 		snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS,  in release_resources()
61 static int keep_resources(struct snd_dice *dice,  in keep_resources()  argument
69 				fw_parent_device(dice->unit)->max_speed);  in keep_resources()
75 	if (resources == &dice->tx_resources)  in keep_resources()
76 		err = snd_dice_transaction_write_tx(dice, TX_ISOCHRONOUS,  in keep_resources()
79 		err = snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS,  in keep_resources()
82 		release_resources(dice, resources);  in keep_resources()
87 static void stop_stream(struct snd_dice *dice, struct amdtp_stream *stream)  in stop_stream()  argument
92 	if (stream == &dice->tx_stream)  in stop_stream()
93 		release_resources(dice, &dice->tx_resources);  in stop_stream()
95 		release_resources(dice, &dice->rx_resources);  in stop_stream()
98 static int start_stream(struct snd_dice *dice, struct amdtp_stream *stream,  in start_stream()  argument
105 	err = snd_dice_stream_get_rate_mode(dice, rate, &mode);  in start_stream()
108 	if (stream == &dice->tx_stream) {  in start_stream()
109 		resources = &dice->tx_resources;  in start_stream()
110 		pcm_chs = dice->tx_channels[mode];  in start_stream()
111 		midi_ports = dice->tx_midi_ports[mode];  in start_stream()
113 		resources = &dice->rx_resources;  in start_stream()
114 		pcm_chs = dice->rx_channels[mode];  in start_stream()
115 		midi_ports = dice->rx_midi_ports[mode];  in start_stream()
146 	err = keep_resources(dice, resources,  in start_stream()
149 		dev_err(&dice->unit->device,  in start_stream()
155 				 fw_parent_device(dice->unit)->max_speed);  in start_stream()
157 		release_resources(dice, resources);  in start_stream()
162 static int get_sync_mode(struct snd_dice *dice, enum cip_flags *sync_mode)  in get_sync_mode()  argument
167 	err = snd_dice_transaction_get_clock_source(dice, &source);  in get_sync_mode()
189 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)  in snd_dice_stream_start_duplex()  argument
196 	if (dice->substreams_counter == 0)  in snd_dice_stream_start_duplex()
199 	err = get_sync_mode(dice, &sync_mode);  in snd_dice_stream_start_duplex()
203 		master = &dice->tx_stream;  in snd_dice_stream_start_duplex()
204 		slave  = &dice->rx_stream;  in snd_dice_stream_start_duplex()
206 		master = &dice->rx_stream;  in snd_dice_stream_start_duplex()
207 		slave  = &dice->tx_stream;  in snd_dice_stream_start_duplex()
212 		stop_stream(dice, master);  in snd_dice_stream_start_duplex()
215 	err = snd_dice_transaction_get_rate(dice, &curr_rate);  in snd_dice_stream_start_duplex()
217 		dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
224 		stop_stream(dice, master);  in snd_dice_stream_start_duplex()
227 		stop_stream(dice, slave);  in snd_dice_stream_start_duplex()
228 		snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_start_duplex()
232 		err = snd_dice_transaction_set_rate(dice, rate);  in snd_dice_stream_start_duplex()
234 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
240 		err = start_stream(dice, master, rate);  in snd_dice_stream_start_duplex()
242 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
246 		err = start_stream(dice, slave, rate);  in snd_dice_stream_start_duplex()
248 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
250 			stop_stream(dice, master);  in snd_dice_stream_start_duplex()
253 		err = snd_dice_transaction_set_enable(dice);  in snd_dice_stream_start_duplex()
255 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
257 			stop_stream(dice, master);  in snd_dice_stream_start_duplex()
258 			stop_stream(dice, slave);  in snd_dice_stream_start_duplex()
265 			snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_start_duplex()
266 			stop_stream(dice, master);  in snd_dice_stream_start_duplex()
267 			stop_stream(dice, slave);  in snd_dice_stream_start_duplex()
275 void snd_dice_stream_stop_duplex(struct snd_dice *dice)  in snd_dice_stream_stop_duplex()  argument
277 	if (dice->substreams_counter > 0)  in snd_dice_stream_stop_duplex()
280 	snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_stop_duplex()
282 	stop_stream(dice, &dice->tx_stream);  in snd_dice_stream_stop_duplex()
283 	stop_stream(dice, &dice->rx_stream);  in snd_dice_stream_stop_duplex()
286 static int init_stream(struct snd_dice *dice, struct amdtp_stream *stream)  in init_stream()  argument
292 	if (stream == &dice->tx_stream) {  in init_stream()
293 		resources = &dice->tx_resources;  in init_stream()
296 		resources = &dice->rx_resources;  in init_stream()
300 	err = fw_iso_resources_init(resources, dice->unit);  in init_stream()
305 	err = amdtp_stream_init(stream, dice->unit, dir, CIP_BLOCKING);  in init_stream()
318 static void destroy_stream(struct snd_dice *dice, struct amdtp_stream *stream)  in destroy_stream()  argument
322 	if (stream == &dice->tx_stream)  in destroy_stream()
323 		resources = &dice->tx_resources;  in destroy_stream()
325 		resources = &dice->rx_resources;  in destroy_stream()
331 int snd_dice_stream_init_duplex(struct snd_dice *dice)  in snd_dice_stream_init_duplex()  argument
335 	dice->substreams_counter = 0;  in snd_dice_stream_init_duplex()
337 	err = init_stream(dice, &dice->tx_stream);  in snd_dice_stream_init_duplex()
341 	err = init_stream(dice, &dice->rx_stream);  in snd_dice_stream_init_duplex()
343 		destroy_stream(dice, &dice->tx_stream);  in snd_dice_stream_init_duplex()
348 void snd_dice_stream_destroy_duplex(struct snd_dice *dice)  in snd_dice_stream_destroy_duplex()  argument
350 	snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_destroy_duplex()
352 	destroy_stream(dice, &dice->tx_stream);  in snd_dice_stream_destroy_duplex()
353 	destroy_stream(dice, &dice->rx_stream);  in snd_dice_stream_destroy_duplex()
355 	dice->substreams_counter = 0;  in snd_dice_stream_destroy_duplex()
358 void snd_dice_stream_update_duplex(struct snd_dice *dice)  in snd_dice_stream_update_duplex()  argument
368 	dice->global_enabled = false;  in snd_dice_stream_update_duplex()
370 	stop_stream(dice, &dice->rx_stream);  in snd_dice_stream_update_duplex()
371 	stop_stream(dice, &dice->tx_stream);  in snd_dice_stream_update_duplex()
373 	fw_iso_resources_update(&dice->rx_resources);  in snd_dice_stream_update_duplex()
374 	fw_iso_resources_update(&dice->tx_resources);  in snd_dice_stream_update_duplex()
377 static void dice_lock_changed(struct snd_dice *dice)  in dice_lock_changed()  argument
379 	dice->dev_lock_changed = true;  in dice_lock_changed()
380 	wake_up(&dice->hwdep_wait);  in dice_lock_changed()
383 int snd_dice_stream_lock_try(struct snd_dice *dice)  in snd_dice_stream_lock_try()  argument
387 	spin_lock_irq(&dice->lock);  in snd_dice_stream_lock_try()
389 	if (dice->dev_lock_count < 0) {  in snd_dice_stream_lock_try()
394 	if (dice->dev_lock_count++ == 0)  in snd_dice_stream_lock_try()
395 		dice_lock_changed(dice);  in snd_dice_stream_lock_try()
398 	spin_unlock_irq(&dice->lock);  in snd_dice_stream_lock_try()
402 void snd_dice_stream_lock_release(struct snd_dice *dice)  in snd_dice_stream_lock_release()  argument
404 	spin_lock_irq(&dice->lock);  in snd_dice_stream_lock_release()
406 	if (WARN_ON(dice->dev_lock_count <= 0))  in snd_dice_stream_lock_release()
409 	if (--dice->dev_lock_count == 0)  in snd_dice_stream_lock_release()
410 		dice_lock_changed(dice);  in snd_dice_stream_lock_release()
412 	spin_unlock_irq(&dice->lock);  in snd_dice_stream_lock_release()