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
106 	err = snd_dice_stream_get_rate_mode(dice, rate, &mode);  in start_stream()
109 	if (stream == &dice->tx_stream) {  in start_stream()
110 		resources = &dice->tx_resources;  in start_stream()
111 		pcm_chs = dice->tx_channels[mode];  in start_stream()
112 		midi_ports = dice->tx_midi_ports[mode];  in start_stream()
114 		resources = &dice->rx_resources;  in start_stream()
115 		pcm_chs = dice->rx_channels[mode];  in start_stream()
116 		midi_ports = dice->rx_midi_ports[mode];  in start_stream()
150 	err = keep_resources(dice, resources,  in start_stream()
153 		dev_err(&dice->unit->device,  in start_stream()
159 				 fw_parent_device(dice->unit)->max_speed);  in start_stream()
161 		release_resources(dice, resources);  in start_stream()
166 static int get_sync_mode(struct snd_dice *dice, enum cip_flags *sync_mode)  in get_sync_mode()  argument
171 	err = snd_dice_transaction_get_clock_source(dice, &source);  in get_sync_mode()
193 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)  in snd_dice_stream_start_duplex()  argument
200 	if (dice->substreams_counter == 0)  in snd_dice_stream_start_duplex()
203 	err = get_sync_mode(dice, &sync_mode);  in snd_dice_stream_start_duplex()
207 		master = &dice->tx_stream;  in snd_dice_stream_start_duplex()
208 		slave  = &dice->rx_stream;  in snd_dice_stream_start_duplex()
210 		master = &dice->rx_stream;  in snd_dice_stream_start_duplex()
211 		slave  = &dice->tx_stream;  in snd_dice_stream_start_duplex()
216 		stop_stream(dice, master);  in snd_dice_stream_start_duplex()
219 	err = snd_dice_transaction_get_rate(dice, &curr_rate);  in snd_dice_stream_start_duplex()
221 		dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
228 		stop_stream(dice, master);  in snd_dice_stream_start_duplex()
231 		stop_stream(dice, slave);  in snd_dice_stream_start_duplex()
232 		snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_start_duplex()
236 		err = snd_dice_transaction_set_rate(dice, rate);  in snd_dice_stream_start_duplex()
238 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
244 		err = start_stream(dice, master, rate);  in snd_dice_stream_start_duplex()
246 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
250 		err = start_stream(dice, slave, rate);  in snd_dice_stream_start_duplex()
252 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
254 			stop_stream(dice, master);  in snd_dice_stream_start_duplex()
257 		err = snd_dice_transaction_set_enable(dice);  in snd_dice_stream_start_duplex()
259 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
261 			stop_stream(dice, master);  in snd_dice_stream_start_duplex()
262 			stop_stream(dice, slave);  in snd_dice_stream_start_duplex()
269 			snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_start_duplex()
270 			stop_stream(dice, master);  in snd_dice_stream_start_duplex()
271 			stop_stream(dice, slave);  in snd_dice_stream_start_duplex()
279 void snd_dice_stream_stop_duplex(struct snd_dice *dice)  in snd_dice_stream_stop_duplex()  argument
281 	if (dice->substreams_counter > 0)  in snd_dice_stream_stop_duplex()
284 	snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_stop_duplex()
286 	stop_stream(dice, &dice->tx_stream);  in snd_dice_stream_stop_duplex()
287 	stop_stream(dice, &dice->rx_stream);  in snd_dice_stream_stop_duplex()
290 static int init_stream(struct snd_dice *dice, struct amdtp_stream *stream)  in init_stream()  argument
296 	if (stream == &dice->tx_stream) {  in init_stream()
297 		resources = &dice->tx_resources;  in init_stream()
300 		resources = &dice->rx_resources;  in init_stream()
304 	err = fw_iso_resources_init(resources, dice->unit);  in init_stream()
309 	err = amdtp_am824_init(stream, dice->unit, dir, CIP_BLOCKING);  in init_stream()
322 static void destroy_stream(struct snd_dice *dice, struct amdtp_stream *stream)  in destroy_stream()  argument
326 	if (stream == &dice->tx_stream)  in destroy_stream()
327 		resources = &dice->tx_resources;  in destroy_stream()
329 		resources = &dice->rx_resources;  in destroy_stream()
335 int snd_dice_stream_init_duplex(struct snd_dice *dice)  in snd_dice_stream_init_duplex()  argument
339 	dice->substreams_counter = 0;  in snd_dice_stream_init_duplex()
341 	err = init_stream(dice, &dice->tx_stream);  in snd_dice_stream_init_duplex()
345 	err = init_stream(dice, &dice->rx_stream);  in snd_dice_stream_init_duplex()
347 		destroy_stream(dice, &dice->tx_stream);  in snd_dice_stream_init_duplex()
352 void snd_dice_stream_destroy_duplex(struct snd_dice *dice)  in snd_dice_stream_destroy_duplex()  argument
354 	snd_dice_transaction_clear_enable(dice);  in snd_dice_stream_destroy_duplex()
356 	destroy_stream(dice, &dice->tx_stream);  in snd_dice_stream_destroy_duplex()
357 	destroy_stream(dice, &dice->rx_stream);  in snd_dice_stream_destroy_duplex()
359 	dice->substreams_counter = 0;  in snd_dice_stream_destroy_duplex()
362 void snd_dice_stream_update_duplex(struct snd_dice *dice)  in snd_dice_stream_update_duplex()  argument
372 	dice->global_enabled = false;  in snd_dice_stream_update_duplex()
374 	stop_stream(dice, &dice->rx_stream);  in snd_dice_stream_update_duplex()
375 	stop_stream(dice, &dice->tx_stream);  in snd_dice_stream_update_duplex()
377 	fw_iso_resources_update(&dice->rx_resources);  in snd_dice_stream_update_duplex()
378 	fw_iso_resources_update(&dice->tx_resources);  in snd_dice_stream_update_duplex()
381 static void dice_lock_changed(struct snd_dice *dice)  in dice_lock_changed()  argument
383 	dice->dev_lock_changed = true;  in dice_lock_changed()
384 	wake_up(&dice->hwdep_wait);  in dice_lock_changed()
387 int snd_dice_stream_lock_try(struct snd_dice *dice)  in snd_dice_stream_lock_try()  argument
391 	spin_lock_irq(&dice->lock);  in snd_dice_stream_lock_try()
393 	if (dice->dev_lock_count < 0) {  in snd_dice_stream_lock_try()
398 	if (dice->dev_lock_count++ == 0)  in snd_dice_stream_lock_try()
399 		dice_lock_changed(dice);  in snd_dice_stream_lock_try()
402 	spin_unlock_irq(&dice->lock);  in snd_dice_stream_lock_try()
406 void snd_dice_stream_lock_release(struct snd_dice *dice)  in snd_dice_stream_lock_release()  argument
408 	spin_lock_irq(&dice->lock);  in snd_dice_stream_lock_release()
410 	if (WARN_ON(dice->dev_lock_count <= 0))  in snd_dice_stream_lock_release()
413 	if (--dice->dev_lock_count == 0)  in snd_dice_stream_lock_release()
414 		dice_lock_changed(dice);  in snd_dice_stream_lock_release()
416 	spin_unlock_irq(&dice->lock);  in snd_dice_stream_lock_release()