1 // SPDX-License-Identifier: GPL-2.0-only
3  * dice_stream.c - a part of driver for DICE based devices
6  * Copyright (c) 2014 Takashi Sakamoto <o-takashi@sakamocchi.jp>
48 		if (!(dice->clock_caps & BIT(i)))  in snd_dice_stream_get_rate_mode()
57 	return -EINVAL;  in snd_dice_stream_get_rate_mode()
80 		return -EINVAL;  in select_clock()
83 	if (completion_done(&dice->clock_accepted))  in select_clock()
84 		reinit_completion(&dice->clock_accepted);  in select_clock()
92 	if (wait_for_completion_timeout(&dice->clock_accepted,  in select_clock()
95 			return -ETIMEDOUT;  in select_clock()
111 	tx_params->count =  in get_register_params()
113 	tx_params->size = be32_to_cpu(reg[1]) * 4;  in get_register_params()
118 	rx_params->count =  in get_register_params()
120 	rx_params->size = be32_to_cpu(reg[1]) * 4;  in get_register_params()
130 		fw_iso_resources_free(&dice->tx_resources[i]);  in release_resources()
131 		fw_iso_resources_free(&dice->rx_resources[i]);  in release_resources()
141 	for (i = 0; i < params->count; i++) {  in stop_streams()
142 		reg = cpu_to_be32((u32)-1);  in stop_streams()
145 					params->size * i + TX_ISOCHRONOUS,  in stop_streams()
149 					params->size * i + RX_ISOCHRONOUS,  in stop_streams()
164 	// one data block of AMDTP packet. Thus sampling transfer frequency is  in keep_resources()
165 	// a half of PCM sampling frequency, i.e. PCM frames at 192.0 kHz are  in keep_resources()
171 	double_pcm_frames = (rate > 96000 && !dice->disable_double_pcm_frames);  in keep_resources()
194 				fw_parent_device(dice->unit)->max_speed);  in keep_resources()
209 	for (i = 0; i < params->count; ++i) {  in keep_dual_resources()
218 			stream = &dice->tx_stream[i];  in keep_dual_resources()
219 			resources = &dice->tx_resources[i];  in keep_dual_resources()
221 			pcm_cache = dice->tx_pcm_chs[i][mode];  in keep_dual_resources()
223 					params->size * i + TX_NUMBER_AUDIO,  in keep_dual_resources()
226 			stream = &dice->rx_stream[i];  in keep_dual_resources()
227 			resources = &dice->rx_resources[i];  in keep_dual_resources()
229 			pcm_cache = dice->rx_pcm_chs[i][mode];  in keep_dual_resources()
231 					params->size * i + RX_NUMBER_AUDIO,  in keep_dual_resources()
241 			dev_info(&dice->unit->device,  in keep_dual_resources()
244 			return -EPROTO;  in keep_dual_resources()
272 	// Check sampling transmission frequency.  in snd_dice_stream_reserve_duplex()
279 	if (dice->substreams_counter == 0 || curr_rate != rate) {  in snd_dice_stream_reserve_duplex()
282 		amdtp_domain_stop(&dice->domain);  in snd_dice_stream_reserve_duplex()
298 		// After changing sampling transfer frequency, the value of  in snd_dice_stream_reserve_duplex()
314 		err = amdtp_domain_set_events_per_period(&dice->domain,  in snd_dice_stream_reserve_duplex()
329 	unsigned int max_speed = fw_parent_device(dice->unit)->max_speed;  in start_streams()
333 	for (i = 0; i < params->count; i++) {  in start_streams()
339 			stream = dice->tx_stream + i;  in start_streams()
340 			resources = dice->tx_resources + i;  in start_streams()
342 			stream = dice->rx_stream + i;  in start_streams()
343 			resources = dice->rx_resources + i;  in start_streams()
346 		reg = cpu_to_be32(resources->channel);  in start_streams()
349 					params->size * i + TX_ISOCHRONOUS,  in start_streams()
353 					params->size * i + RX_ISOCHRONOUS,  in start_streams()
362 					params->size * i + TX_SPEED,  in start_streams()
368 		err = amdtp_domain_add_stream(&dice->domain, stream,  in start_streams()
369 					      resources->channel, max_speed);  in start_streams()
378  * MEMO: After this function, there're two states of streams:
379  *  - None streams are running.
380  *  - All streams are running.
384 	unsigned int generation = dice->rx_resources[0].generation;  in snd_dice_stream_start_duplex()
391 	if (dice->substreams_counter == 0)  in snd_dice_stream_start_duplex()
392 		return -EIO;  in snd_dice_stream_start_duplex()
400 		if (amdtp_streaming_error(&dice->tx_stream[i]) ||  in snd_dice_stream_start_duplex()
401 		    amdtp_streaming_error(&dice->rx_stream[i])) {  in snd_dice_stream_start_duplex()
402 			amdtp_domain_stop(&dice->domain);  in snd_dice_stream_start_duplex()
408 	if (generation != fw_parent_device(dice->unit)->card->generation) {  in snd_dice_stream_start_duplex()
411 				fw_iso_resources_update(dice->tx_resources + i);  in snd_dice_stream_start_duplex()
413 				fw_iso_resources_update(dice->rx_resources + i);  in snd_dice_stream_start_duplex()
425 		if (dice->tx_pcm_chs[i][mode] > 0 &&  in snd_dice_stream_start_duplex()
426 		    !amdtp_stream_running(&dice->tx_stream[i]))  in snd_dice_stream_start_duplex()
428 		if (dice->rx_pcm_chs[i][mode] > 0 &&  in snd_dice_stream_start_duplex()
429 		    !amdtp_stream_running(&dice->rx_stream[i]))  in snd_dice_stream_start_duplex()
444 			dev_err(&dice->unit->device,  in snd_dice_stream_start_duplex()
453 		err = amdtp_domain_start(&dice->domain, 0, true, false);  in snd_dice_stream_start_duplex()
457 		if (!amdtp_domain_wait_ready(&dice->domain, READY_TIMEOUT_MS)) {  in snd_dice_stream_start_duplex()
458 			err = -ETIMEDOUT;  in snd_dice_stream_start_duplex()
465 	amdtp_domain_stop(&dice->domain);  in snd_dice_stream_start_duplex()
471  * MEMO: After this function, there're two states of streams:
472  *  - None streams are running.
473  *  - All streams are running.
479 	if (dice->substreams_counter == 0) {  in snd_dice_stream_stop_duplex()
483 		amdtp_domain_stop(&dice->domain);  in snd_dice_stream_stop_duplex()
496 		stream = &dice->tx_stream[index];  in init_stream()
497 		resources = &dice->tx_resources[index];  in init_stream()
499 		stream = &dice->rx_stream[index];  in init_stream()
500 		resources = &dice->rx_resources[index];  in init_stream()
503 	err = fw_iso_resources_init(resources, dice->unit);  in init_stream()
506 	resources->channels_mask = 0x00000000ffffffffuLL;  in init_stream()
508 	err = amdtp_am824_init(stream, dice->unit, dir, CIP_BLOCKING);  in init_stream()
529 		stream = &dice->tx_stream[index];  in destroy_stream()
530 		resources = &dice->tx_resources[index];  in destroy_stream()
532 		stream = &dice->rx_stream[index];  in destroy_stream()
533 		resources = &dice->rx_resources[index];  in destroy_stream()
547 			for (; i >= 0; i--)  in snd_dice_stream_init_duplex()
556 			for (; i >= 0; i--)  in snd_dice_stream_init_duplex()
564 	err = amdtp_domain_init(&dice->domain);  in snd_dice_stream_init_duplex()
584 	amdtp_domain_destroy(&dice->domain);  in snd_dice_stream_destroy_duplex()
599 	dice->global_enabled = false;  in snd_dice_stream_update_duplex()
602 		amdtp_domain_stop(&dice->domain);  in snd_dice_stream_update_duplex()
624 	 * Available stream format is restricted at current mode of sampling  in snd_dice_stream_detect_current_formats()
654 		dice->tx_pcm_chs[i][mode] = be32_to_cpu(reg[0]);  in snd_dice_stream_detect_current_formats()
655 		dice->tx_midi_ports[i] = max_t(unsigned int,  in snd_dice_stream_detect_current_formats()
656 				be32_to_cpu(reg[1]), dice->tx_midi_ports[i]);  in snd_dice_stream_detect_current_formats()
664 		dice->rx_pcm_chs[i][mode] = be32_to_cpu(reg[0]);  in snd_dice_stream_detect_current_formats()
665 		dice->rx_midi_ports[i] = max_t(unsigned int,  in snd_dice_stream_detect_current_formats()
666 				be32_to_cpu(reg[1]), dice->rx_midi_ports[i]);  in snd_dice_stream_detect_current_formats()
674 	dice->dev_lock_changed = true;  in dice_lock_changed()
675 	wake_up(&dice->hwdep_wait);  in dice_lock_changed()
682 	spin_lock_irq(&dice->lock);  in snd_dice_stream_lock_try()
684 	if (dice->dev_lock_count < 0) {  in snd_dice_stream_lock_try()
685 		err = -EBUSY;  in snd_dice_stream_lock_try()
689 	if (dice->dev_lock_count++ == 0)  in snd_dice_stream_lock_try()
693 	spin_unlock_irq(&dice->lock);  in snd_dice_stream_lock_try()
699 	spin_lock_irq(&dice->lock);  in snd_dice_stream_lock_release()
701 	if (WARN_ON(dice->dev_lock_count <= 0))  in snd_dice_stream_lock_release()
704 	if (--dice->dev_lock_count == 0)  in snd_dice_stream_lock_release()
707 	spin_unlock_irq(&dice->lock);  in snd_dice_stream_lock_release()