[linux-block.git] / sound / firewire / motu / motu-pcm.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * motu-pcm.c - a part of driver for MOTU FireWire series
 *
 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
 */

#include <sound/pcm_params.h>
#include "motu.h"

static int motu_rate_constraint(struct snd_pcm_hw_params *params,
				struct snd_pcm_hw_rule *rule)
{
	struct snd_motu_packet_format *formats = rule->private;

	const struct snd_interval *c =
		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
	struct snd_interval *r =
		hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
	struct snd_interval rates = {
		.min = UINT_MAX, .max = 0, .integer = 1
	};
	unsigned int i, pcm_channels, rate, mode;

	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
		rate = snd_motu_clock_rates[i];
		mode = i / 2;

		pcm_channels = formats->pcm_chunks[mode];
		if (!snd_interval_test(c, pcm_channels))
			continue;

		rates.min = min(rates.min, rate);
		rates.max = max(rates.max, rate);
	}

	return snd_interval_refine(r, &rates);
}

static int motu_channels_constraint(struct snd_pcm_hw_params *params,
				    struct snd_pcm_hw_rule *rule)
{
	struct snd_motu_packet_format *formats = rule->private;

	const struct snd_interval *r =
		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
	struct snd_interval *c =
		hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
	struct snd_interval channels = {
		.min = UINT_MAX, .max = 0, .integer = 1
	};
	unsigned int i, pcm_channels, rate, mode;

	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
		rate = snd_motu_clock_rates[i];
		mode = i / 2;

		if (!snd_interval_test(r, rate))
			continue;

		pcm_channels = formats->pcm_chunks[mode];
		channels.min = min(channels.min, pcm_channels);
		channels.max = max(channels.max, pcm_channels);
	}

	return snd_interval_refine(c, &channels);
}

static void limit_channels_and_rates(struct snd_motu *motu,
				     struct snd_pcm_runtime *runtime,
				     struct snd_motu_packet_format *formats)
{
	struct snd_pcm_hardware *hw = &runtime->hw;
	unsigned int i, pcm_channels, rate, mode;

	hw->channels_min = UINT_MAX;
	hw->channels_max = 0;

	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
		rate = snd_motu_clock_rates[i];
		mode = i / 2;

		pcm_channels = formats->pcm_chunks[mode];
		if (pcm_channels == 0)
			continue;

		hw->rates |= snd_pcm_rate_to_rate_bit(rate);
		hw->channels_min = min(hw->channels_min, pcm_channels);
		hw->channels_max = max(hw->channels_max, pcm_channels);
	}

	snd_pcm_limit_hw_rates(runtime);
}

static int init_hw_info(struct snd_motu *motu,
			struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_pcm_hardware *hw = &runtime->hw;
	struct amdtp_stream *stream;
	struct snd_motu_packet_format *formats;
	int err;

	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
		hw->formats = SNDRV_PCM_FMTBIT_S32;
		stream = &motu->tx_stream;
		formats = &motu->tx_packet_formats;
	} else {
		hw->formats = SNDRV_PCM_FMTBIT_S32;
		stream = &motu->rx_stream;
		formats = &motu->rx_packet_formats;
	}

	limit_channels_and_rates(motu, runtime, formats);

	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
				  motu_rate_constraint, formats,
				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
	if (err < 0)
		return err;
	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
				  motu_channels_constraint, formats,
				  SNDRV_PCM_HW_PARAM_RATE, -1);
	if (err < 0)
		return err;

	return amdtp_motu_add_pcm_hw_constraints(stream, runtime);
}

static int pcm_open(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;
	struct amdtp_domain *d = &motu->domain;
	enum snd_motu_clock_source src;
	int err;

	err = snd_motu_stream_lock_try(motu);
	if (err < 0)
		return err;

	mutex_lock(&motu->mutex);

	err = snd_motu_stream_cache_packet_formats(motu);
	if (err < 0)
		goto err_locked;

	err = init_hw_info(motu, substream);
	if (err < 0)
		goto err_locked;

	err = snd_motu_protocol_get_clock_source(motu, &src);
	if (err < 0)
		goto err_locked;

	// When source of clock is not internal or any stream is reserved for
	// transmission of PCM frames, the available sampling rate is limited
	// at current one.
	if ((src != SND_MOTU_CLOCK_SOURCE_INTERNAL &&
	     src != SND_MOTU_CLOCK_SOURCE_SPH) ||
	    (motu->substreams_counter > 0 && d->events_per_period > 0)) {
		unsigned int frames_per_period = d->events_per_period;
		unsigned int frames_per_buffer = d->events_per_buffer;
		unsigned int rate;

		err = snd_motu_protocol_get_clock_rate(motu, &rate);
		if (err < 0)
			goto err_locked;

		substream->runtime->hw.rate_min = rate;
		substream->runtime->hw.rate_max = rate;

		if (frames_per_period > 0) {
			err = snd_pcm_hw_constraint_minmax(substream->runtime,
					SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
					frames_per_period, frames_per_period);
			if (err < 0)
				goto err_locked;

			err = snd_pcm_hw_constraint_minmax(substream->runtime,
					SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
					frames_per_buffer, frames_per_buffer);
			if (err < 0)
				goto err_locked;
		}
	}

	snd_pcm_set_sync(substream);

	mutex_unlock(&motu->mutex);

	return 0;
err_locked:
	mutex_unlock(&motu->mutex);
	snd_motu_stream_lock_release(motu);
	return err;
}

static int pcm_close(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;

	snd_motu_stream_lock_release(motu);

	return 0;
}

static int pcm_hw_params(struct snd_pcm_substream *substream,
			 struct snd_pcm_hw_params *hw_params)
{
	struct snd_motu *motu = substream->private_data;
	int err = 0;

	if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) {
		unsigned int rate = params_rate(hw_params);
		unsigned int frames_per_period = params_period_size(hw_params);
		unsigned int frames_per_buffer = params_buffer_size(hw_params);

		mutex_lock(&motu->mutex);
		err = snd_motu_stream_reserve_duplex(motu, rate,
					frames_per_period, frames_per_buffer);
		if (err >= 0)
			++motu->substreams_counter;
		mutex_unlock(&motu->mutex);
	}

	return err;
}

static int pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;

	mutex_lock(&motu->mutex);

	if (substream->runtime->state != SNDRV_PCM_STATE_OPEN)
		--motu->substreams_counter;

	snd_motu_stream_stop_duplex(motu);

	mutex_unlock(&motu->mutex);

	return 0;
}

static int capture_prepare(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;
	int err;

	mutex_lock(&motu->mutex);
	err = snd_motu_stream_start_duplex(motu);
	mutex_unlock(&motu->mutex);
	if (err >= 0)
		amdtp_stream_pcm_prepare(&motu->tx_stream);

	return 0;
}
static int playback_prepare(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;
	int err;

	mutex_lock(&motu->mutex);
	err = snd_motu_stream_start_duplex(motu);
	mutex_unlock(&motu->mutex);
	if (err >= 0)
		amdtp_stream_pcm_prepare(&motu->rx_stream);

	return err;
}

static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
	struct snd_motu *motu = substream->private_data;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		amdtp_stream_pcm_trigger(&motu->tx_stream, substream);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		amdtp_stream_pcm_trigger(&motu->tx_stream, NULL);
		break;
	default:
		return -EINVAL;
	}

	return 0;
}
static int playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
	struct snd_motu *motu = substream->private_data;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		amdtp_stream_pcm_trigger(&motu->rx_stream, substream);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		amdtp_stream_pcm_trigger(&motu->rx_stream, NULL);
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;

	return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->tx_stream);
}
static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;

	return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->rx_stream);
}

static int capture_ack(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;

	return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->tx_stream);
}

static int playback_ack(struct snd_pcm_substream *substream)
{
	struct snd_motu *motu = substream->private_data;

	return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->rx_stream);
}

int snd_motu_create_pcm_devices(struct snd_motu *motu)
{
	static const struct snd_pcm_ops capture_ops = {
		.open      = pcm_open,
		.close     = pcm_close,
		.hw_params = pcm_hw_params,
		.hw_free   = pcm_hw_free,
		.prepare   = capture_prepare,
		.trigger   = capture_trigger,
		.pointer   = capture_pointer,
		.ack       = capture_ack,
	};
	static const struct snd_pcm_ops playback_ops = {
		.open      = pcm_open,
		.close     = pcm_close,
		.hw_params = pcm_hw_params,
		.hw_free   = pcm_hw_free,
		.prepare   = playback_prepare,
		.trigger   = playback_trigger,
		.pointer   = playback_pointer,
		.ack       = playback_ack,
	};
	struct snd_pcm *pcm;
	int err;

	err = snd_pcm_new(motu->card, motu->card->driver, 0, 1, 1, &pcm);
	if (err < 0)
		return err;
	pcm->private_data = motu;
	strcpy(pcm->name, motu->card->shortname);

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);

	return 0;
}
Commit	Line	Data
da607e19	1	// SPDX-License-Identifier: GPL-2.0-only
dd49b2d1 TS	2	/*
	3	* motu-pcm.c - a part of driver for MOTU FireWire series
	4	*
	5	* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
dd49b2d1 TS	6	*/
	7
	8	#include <sound/pcm_params.h>
	9	#include "motu.h"
	10
	11	static int motu_rate_constraint(struct snd_pcm_hw_params *params,
	12	struct snd_pcm_hw_rule *rule)
	13	{
	14	struct snd_motu_packet_format *formats = rule->private;
	15
	16	const struct snd_interval *c =
	17	hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
	18	struct snd_interval *r =
	19	hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
	20	struct snd_interval rates = {
	21	.min = UINT_MAX, .max = 0, .integer = 1
	22	};
	23	unsigned int i, pcm_channels, rate, mode;
	24
	25	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
	26	rate = snd_motu_clock_rates[i];
	27	mode = i / 2;
	28
9883b385	29	pcm_channels = formats->pcm_chunks[mode];
dd49b2d1 TS	30	if (!snd_interval_test(c, pcm_channels))
	31	continue;
	32
	33	rates.min = min(rates.min, rate);
	34	rates.max = max(rates.max, rate);
	35	}
	36
	37	return snd_interval_refine(r, &rates);
	38	}
	39
	40	static int motu_channels_constraint(struct snd_pcm_hw_params *params,
	41	struct snd_pcm_hw_rule *rule)
	42	{
	43	struct snd_motu_packet_format *formats = rule->private;
	44
	45	const struct snd_interval *r =
	46	hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
	47	struct snd_interval *c =
	48	hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
	49	struct snd_interval channels = {
	50	.min = UINT_MAX, .max = 0, .integer = 1
	51	};
	52	unsigned int i, pcm_channels, rate, mode;
	53
	54	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
	55	rate = snd_motu_clock_rates[i];
	56	mode = i / 2;
	57
	58	if (!snd_interval_test(r, rate))
	59	continue;
	60
9883b385	61	pcm_channels = formats->pcm_chunks[mode];
dd49b2d1 TS	62	channels.min = min(channels.min, pcm_channels);
	63	channels.max = max(channels.max, pcm_channels);
	64	}
	65
	66	return snd_interval_refine(c, &channels);
	67	}
	68
	69	static void limit_channels_and_rates(struct snd_motu *motu,
	70	struct snd_pcm_runtime *runtime,
	71	struct snd_motu_packet_format *formats)
	72	{
	73	struct snd_pcm_hardware *hw = &runtime->hw;
	74	unsigned int i, pcm_channels, rate, mode;
	75
	76	hw->channels_min = UINT_MAX;
	77	hw->channels_max = 0;
	78
	79	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
	80	rate = snd_motu_clock_rates[i];
	81	mode = i / 2;
	82
9883b385	83	pcm_channels = formats->pcm_chunks[mode];
dd49b2d1 TS	84	if (pcm_channels == 0)
	85	continue;
	86
	87	hw->rates \|= snd_pcm_rate_to_rate_bit(rate);
	88	hw->channels_min = min(hw->channels_min, pcm_channels);
	89	hw->channels_max = max(hw->channels_max, pcm_channels);
	90	}
	91
	92	snd_pcm_limit_hw_rates(runtime);
	93	}
	94
dd49b2d1 TS	95	static int init_hw_info(struct snd_motu *motu,
	96	struct snd_pcm_substream *substream)
	97	{
	98	struct snd_pcm_runtime *runtime = substream->runtime;
	99	struct snd_pcm_hardware *hw = &runtime->hw;
	100	struct amdtp_stream *stream;
	101	struct snd_motu_packet_format *formats;
	102	int err;
	103
dd49b2d1 TS	104	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
	105	hw->formats = SNDRV_PCM_FMTBIT_S32;
	106	stream = &motu->tx_stream;
	107	formats = &motu->tx_packet_formats;
	108	} else {
	109	hw->formats = SNDRV_PCM_FMTBIT_S32;
	110	stream = &motu->rx_stream;
	111	formats = &motu->rx_packet_formats;
	112	}
	113
	114	limit_channels_and_rates(motu, runtime, formats);
dd49b2d1 TS	115
	116	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
	117	motu_rate_constraint, formats,
	118	SNDRV_PCM_HW_PARAM_CHANNELS, -1);
	119	if (err < 0)
	120	return err;
	121	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
	122	motu_channels_constraint, formats,
	123	SNDRV_PCM_HW_PARAM_RATE, -1);
	124	if (err < 0)
	125	return err;
	126
	127	return amdtp_motu_add_pcm_hw_constraints(stream, runtime);
	128	}
	129
	130	static int pcm_open(struct snd_pcm_substream *substream)
	131	{
	132	struct snd_motu *motu = substream->private_data;
3fd80b20	133	struct amdtp_domain *d = &motu->domain;
dd49b2d1	134	enum snd_motu_clock_source src;
dd49b2d1 TS	135	int err;
dd49b2d1 TS	136
71c37977 TS	137	err = snd_motu_stream_lock_try(motu);
	138	if (err < 0)
	139	return err;
	140
dd49b2d1 TS	141	mutex_lock(&motu->mutex);
dd49b2d1 TS	142
8b460c76	143	err = snd_motu_stream_cache_packet_formats(motu);
dd49b2d1	144	if (err < 0)
71c37977	145	goto err_locked;
dd49b2d1 TS	146
	147	err = init_hw_info(motu, substream);
	148	if (err < 0)
71c37977	149	goto err_locked;
dd49b2d1	150
ff222b7e	151	err = snd_motu_protocol_get_clock_source(motu, &src);
dd49b2d1	152	if (err < 0)
71c37977	153	goto err_locked;
3fd80b20 TS	154
	155	// When source of clock is not internal or any stream is reserved for
	156	// transmission of PCM frames, the available sampling rate is limited
	157	// at current one.
3f58f004 TS	158	if ((src != SND_MOTU_CLOCK_SOURCE_INTERNAL &&
3f58f004 TS	159	src != SND_MOTU_CLOCK_SOURCE_SPH) \|\|
3fd80b20 TS	160	(motu->substreams_counter > 0 && d->events_per_period > 0)) {
3fd80b20 TS	161	unsigned int frames_per_period = d->events_per_period;
0f5482e7	162	unsigned int frames_per_buffer = d->events_per_buffer;
3fd80b20 TS	163	unsigned int rate;
3fd80b20 TS	164
ff222b7e	165	err = snd_motu_protocol_get_clock_rate(motu, &rate);
dd49b2d1	166	if (err < 0)
71c37977	167	goto err_locked;
3fd80b20	168
dd49b2d1 TS	169	substream->runtime->hw.rate_min = rate;
dd49b2d1 TS	170	substream->runtime->hw.rate_max = rate;
3fd80b20 TS	171
	172	if (frames_per_period > 0) {
	173	err = snd_pcm_hw_constraint_minmax(substream->runtime,
	174	SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
	175	frames_per_period, frames_per_period);
9ff3483e	176	if (err < 0)
3fd80b20	177	goto err_locked;
0f5482e7 TS	178
	179	err = snd_pcm_hw_constraint_minmax(substream->runtime,
	180	SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
	181	frames_per_buffer, frames_per_buffer);
9ff3483e	182	if (err < 0)
0f5482e7	183	goto err_locked;
3fd80b20	184	}
dd49b2d1 TS	185	}
	186
	187	snd_pcm_set_sync(substream);
	188
	189	mutex_unlock(&motu->mutex);
	190
3fd80b20	191	return 0;
71c37977 TS	192	err_locked:
	193	mutex_unlock(&motu->mutex);
	194	snd_motu_stream_lock_release(motu);
dd49b2d1 TS	195	return err;
	196	}
	197
	198	static int pcm_close(struct snd_pcm_substream *substream)
	199	{
71c37977 TS	200	struct snd_motu *motu = substream->private_data;
	201
	202	snd_motu_stream_lock_release(motu);
	203
dd49b2d1 TS	204	return 0;
	205	}
	206
15d472ec TS	207	static int pcm_hw_params(struct snd_pcm_substream *substream,
15d472ec TS	208	struct snd_pcm_hw_params *hw_params)
dd49b2d1 TS	209	{
dd49b2d1 TS	210	struct snd_motu *motu = substream->private_data;
7641d549	211	int err = 0;
dd49b2d1	212
23cb0767	213	if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) {
8edc56ec	214	unsigned int rate = params_rate(hw_params);
0d39cd0e	215	unsigned int frames_per_period = params_period_size(hw_params);
0f5482e7	216	unsigned int frames_per_buffer = params_buffer_size(hw_params);
8edc56ec	217
dd49b2d1	218	mutex_lock(&motu->mutex);
0d39cd0e	219	err = snd_motu_stream_reserve_duplex(motu, rate,
0f5482e7	220	frames_per_period, frames_per_buffer);
8edc56ec TS	221	if (err >= 0)
8edc56ec TS	222	++motu->substreams_counter;
dd49b2d1 TS	223	mutex_unlock(&motu->mutex);
	224	}
	225
8edc56ec	226	return err;
dd49b2d1	227	}
dd49b2d1	228
15d472ec	229	static int pcm_hw_free(struct snd_pcm_substream *substream)
dd49b2d1 TS	230	{
	231	struct snd_motu *motu = substream->private_data;
	232
	233	mutex_lock(&motu->mutex);
	234
23cb0767	235	if (substream->runtime->state != SNDRV_PCM_STATE_OPEN)
8edc56ec	236	--motu->substreams_counter;
dd49b2d1 TS	237
	238	snd_motu_stream_stop_duplex(motu);
	239
	240	mutex_unlock(&motu->mutex);
	241
7641d549	242	return 0;
dd49b2d1 TS	243	}
	244
	245	static int capture_prepare(struct snd_pcm_substream *substream)
	246	{
	247	struct snd_motu *motu = substream->private_data;
	248	int err;
	249
	250	mutex_lock(&motu->mutex);
8edc56ec	251	err = snd_motu_stream_start_duplex(motu);
dd49b2d1 TS	252	mutex_unlock(&motu->mutex);
	253	if (err >= 0)
	254	amdtp_stream_pcm_prepare(&motu->tx_stream);
	255
	256	return 0;
	257	}
	258	static int playback_prepare(struct snd_pcm_substream *substream)
	259	{
	260	struct snd_motu *motu = substream->private_data;
	261	int err;
	262
	263	mutex_lock(&motu->mutex);
8edc56ec	264	err = snd_motu_stream_start_duplex(motu);
dd49b2d1 TS	265	mutex_unlock(&motu->mutex);
	266	if (err >= 0)
	267	amdtp_stream_pcm_prepare(&motu->rx_stream);
	268
	269	return err;
	270	}
	271
	272	static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
	273	{
	274	struct snd_motu *motu = substream->private_data;
	275
	276	switch (cmd) {
	277	case SNDRV_PCM_TRIGGER_START:
	278	amdtp_stream_pcm_trigger(&motu->tx_stream, substream);
	279	break;
	280	case SNDRV_PCM_TRIGGER_STOP:
	281	amdtp_stream_pcm_trigger(&motu->tx_stream, NULL);
	282	break;
	283	default:
	284	return -EINVAL;
	285	}
	286
	287	return 0;
	288	}
	289	static int playback_trigger(struct snd_pcm_substream *substream, int cmd)
	290	{
	291	struct snd_motu *motu = substream->private_data;
	292
	293	switch (cmd) {
	294	case SNDRV_PCM_TRIGGER_START:
	295	amdtp_stream_pcm_trigger(&motu->rx_stream, substream);
	296	break;
	297	case SNDRV_PCM_TRIGGER_STOP:
	298	amdtp_stream_pcm_trigger(&motu->rx_stream, NULL);
	299	break;
	300	default:
	301	return -EINVAL;
	302	}
	303
	304	return 0;
	305	}
	306
	307	static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream)
	308	{
	309	struct snd_motu *motu = substream->private_data;
	310
f890f9a0	311	return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->tx_stream);
dd49b2d1 TS	312	}
	313	static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
	314	{
	315	struct snd_motu *motu = substream->private_data;
	316
f890f9a0	317	return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->rx_stream);
dd49b2d1 TS	318	}
dd49b2d1 TS	319
875becf8 TS	320	static int capture_ack(struct snd_pcm_substream *substream)
	321	{
	322	struct snd_motu *motu = substream->private_data;
	323
e6dcc92f	324	return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->tx_stream);
875becf8 TS	325	}
	326
	327	static int playback_ack(struct snd_pcm_substream *substream)
	328	{
	329	struct snd_motu *motu = substream->private_data;
	330
e6dcc92f	331	return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->rx_stream);
875becf8 TS	332	}
875becf8 TS	333
dd49b2d1 TS	334	int snd_motu_create_pcm_devices(struct snd_motu *motu)
dd49b2d1 TS	335	{
b2165f38	336	static const struct snd_pcm_ops capture_ops = {
dd49b2d1 TS	337	.open = pcm_open,
dd49b2d1 TS	338	.close = pcm_close,
15d472ec TS	339	.hw_params = pcm_hw_params,
15d472ec TS	340	.hw_free = pcm_hw_free,
dd49b2d1 TS	341	.prepare = capture_prepare,
	342	.trigger = capture_trigger,
	343	.pointer = capture_pointer,
875becf8	344	.ack = capture_ack,
dd49b2d1	345	};
b2165f38	346	static const struct snd_pcm_ops playback_ops = {
dd49b2d1 TS	347	.open = pcm_open,
dd49b2d1 TS	348	.close = pcm_close,
15d472ec TS	349	.hw_params = pcm_hw_params,
15d472ec TS	350	.hw_free = pcm_hw_free,
dd49b2d1 TS	351	.prepare = playback_prepare,
	352	.trigger = playback_trigger,
	353	.pointer = playback_pointer,
875becf8	354	.ack = playback_ack,
dd49b2d1 TS	355	};
	356	struct snd_pcm *pcm;
	357	int err;
	358
	359	err = snd_pcm_new(motu->card, motu->card->driver, 0, 1, 1, &pcm);
	360	if (err < 0)
	361	return err;
	362	pcm->private_data = motu;
	363	strcpy(pcm->name, motu->card->shortname);
	364
	365	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
	366	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
7641d549	367	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
dd49b2d1 TS	368
	369	return 0;
	370	}