[linux-2.6-block.git] / sound / firewire / motu / motu-midi.c

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

static int midi_open(struct snd_rawmidi_substream *substream)
{
	struct snd_motu *motu = substream->rmidi->private_data;
	int err;

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

	mutex_lock(&motu->mutex);

	err = snd_motu_stream_reserve_duplex(motu, 0, 0);
	if (err >= 0) {
		++motu->substreams_counter;
		err = snd_motu_stream_start_duplex(motu);
		if (err < 0)
			--motu->substreams_counter;
	}

	mutex_unlock(&motu->mutex);

	if (err < 0)
		snd_motu_stream_lock_release(motu);

	return err;
}

static int midi_close(struct snd_rawmidi_substream *substream)
{
	struct snd_motu *motu = substream->rmidi->private_data;

	mutex_lock(&motu->mutex);

	--motu->substreams_counter;
	snd_motu_stream_stop_duplex(motu);

	mutex_unlock(&motu->mutex);

	snd_motu_stream_lock_release(motu);
	return 0;
}

static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
{
	struct snd_motu *motu = substrm->rmidi->private_data;
	unsigned long flags;

	spin_lock_irqsave(&motu->lock, flags);

	if (up)
		amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
					substrm);
	else
		amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
					NULL);

	spin_unlock_irqrestore(&motu->lock, flags);
}

static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
{
	struct snd_motu *motu = substrm->rmidi->private_data;
	unsigned long flags;

	spin_lock_irqsave(&motu->lock, flags);

	if (up)
		amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
					substrm);
	else
		amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
					NULL);

	spin_unlock_irqrestore(&motu->lock, flags);
}

static void set_midi_substream_names(struct snd_motu *motu,
				     struct snd_rawmidi_str *str)
{
	struct snd_rawmidi_substream *subs;

	list_for_each_entry(subs, &str->substreams, list) {
		snprintf(subs->name, sizeof(subs->name),
			 "%s MIDI %d", motu->card->shortname, subs->number + 1);
	}
}

int snd_motu_create_midi_devices(struct snd_motu *motu)
{
	static const struct snd_rawmidi_ops capture_ops = {
		.open		= midi_open,
		.close		= midi_close,
		.trigger	= midi_capture_trigger,
	};
	static const struct snd_rawmidi_ops playback_ops = {
		.open		= midi_open,
		.close		= midi_close,
		.trigger	= midi_playback_trigger,
	};
	struct snd_rawmidi *rmidi;
	struct snd_rawmidi_str *str;
	int err;

	/* create midi ports */
	err = snd_rawmidi_new(motu->card, motu->card->driver, 0, 1, 1, &rmidi);
	if (err < 0)
		return err;

	snprintf(rmidi->name, sizeof(rmidi->name),
		 "%s MIDI", motu->card->shortname);
	rmidi->private_data = motu;

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT |
			     SNDRV_RAWMIDI_INFO_OUTPUT |
			     SNDRV_RAWMIDI_INFO_DUPLEX;

	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
			    &capture_ops);
	str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
	set_midi_substream_names(motu, str);

	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
			    &playback_ops);
	str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
	set_midi_substream_names(motu, str);

	return 0;
}
Commit	Line	Data
da607e19	1	// SPDX-License-Identifier: GPL-2.0-only
9e796e7d TS	2	/*
	3	* motu-midi.h - a part of driver for MOTU FireWire series
	4	*
	5	* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
9e796e7d TS	6	*/
	7	#include "motu.h"
	8
f6341db6	9	static int midi_open(struct snd_rawmidi_substream *substream)
9e796e7d TS	10	{
	11	struct snd_motu *motu = substream->rmidi->private_data;
	12	int err;
	13
71c37977 TS	14	err = snd_motu_stream_lock_try(motu);
	15	if (err < 0)
	16	return err;
	17
9e796e7d TS	18	mutex_lock(&motu->mutex);
9e796e7d TS	19
0d39cd0e	20	err = snd_motu_stream_reserve_duplex(motu, 0, 0);
8edc56ec TS	21	if (err >= 0) {
	22	++motu->substreams_counter;
	23	err = snd_motu_stream_start_duplex(motu);
ba18ca2b TS	24	if (err < 0)
ba18ca2b TS	25	--motu->substreams_counter;
8edc56ec	26	}
9e796e7d TS	27
	28	mutex_unlock(&motu->mutex);
	29
71c37977 TS	30	if (err < 0)
	31	snd_motu_stream_lock_release(motu);
	32
9e796e7d TS	33	return err;
	34	}
	35
f6341db6	36	static int midi_close(struct snd_rawmidi_substream *substream)
9e796e7d TS	37	{
	38	struct snd_motu *motu = substream->rmidi->private_data;
	39
	40	mutex_lock(&motu->mutex);
	41
8edc56ec	42	--motu->substreams_counter;
9e796e7d TS	43	snd_motu_stream_stop_duplex(motu);
	44
	45	mutex_unlock(&motu->mutex);
	46
71c37977	47	snd_motu_stream_lock_release(motu);
9e796e7d TS	48	return 0;
	49	}
	50
	51	static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
	52	{
	53	struct snd_motu *motu = substrm->rmidi->private_data;
	54	unsigned long flags;
	55
	56	spin_lock_irqsave(&motu->lock, flags);
	57
	58	if (up)
	59	amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
	60	substrm);
	61	else
	62	amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
	63	NULL);
	64
	65	spin_unlock_irqrestore(&motu->lock, flags);
	66	}
	67
	68	static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
	69	{
	70	struct snd_motu *motu = substrm->rmidi->private_data;
	71	unsigned long flags;
	72
	73	spin_lock_irqsave(&motu->lock, flags);
	74
	75	if (up)
	76	amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
	77	substrm);
	78	else
	79	amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
	80	NULL);
	81
	82	spin_unlock_irqrestore(&motu->lock, flags);
	83	}
	84
	85	static void set_midi_substream_names(struct snd_motu *motu,
	86	struct snd_rawmidi_str *str)
	87	{
	88	struct snd_rawmidi_substream *subs;
	89
	90	list_for_each_entry(subs, &str->substreams, list) {
	91	snprintf(subs->name, sizeof(subs->name),
	92	"%s MIDI %d", motu->card->shortname, subs->number + 1);
	93	}
	94	}
	95
	96	int snd_motu_create_midi_devices(struct snd_motu *motu)
	97	{
eb2c1830	98	static const struct snd_rawmidi_ops capture_ops = {
f6341db6 TS	99	.open = midi_open,
f6341db6 TS	100	.close = midi_close,
9e796e7d TS	101	.trigger = midi_capture_trigger,
9e796e7d TS	102	};
eb2c1830	103	static const struct snd_rawmidi_ops playback_ops = {
f6341db6 TS	104	.open = midi_open,
f6341db6 TS	105	.close = midi_close,
9e796e7d TS	106	.trigger = midi_playback_trigger,
	107	};
	108	struct snd_rawmidi *rmidi;
	109	struct snd_rawmidi_str *str;
	110	int err;
	111
	112	/* create midi ports */
	113	err = snd_rawmidi_new(motu->card, motu->card->driver, 0, 1, 1, &rmidi);
	114	if (err < 0)
	115	return err;
	116
	117	snprintf(rmidi->name, sizeof(rmidi->name),
	118	"%s MIDI", motu->card->shortname);
	119	rmidi->private_data = motu;
	120
	121	rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_INPUT \|
	122	SNDRV_RAWMIDI_INFO_OUTPUT \|
	123	SNDRV_RAWMIDI_INFO_DUPLEX;
	124
	125	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
	126	&capture_ops);
	127	str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
	128	set_midi_substream_names(motu, str);
	129
	130	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
	131	&playback_ops);
	132	str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
	133	set_midi_substream_names(motu, str);
	134
	135	return 0;
	136	}