[deliverable/linux.git] / sound / firewire / dice / dice-midi.c

/*
 * dice_midi.c - a part of driver for Dice based devices
 *
 * Copyright (c) 2014 Takashi Sakamoto
 *
 * Licensed under the terms of the GNU General Public License, version 2.
 */
#include "dice.h"

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

	err = snd_dice_stream_lock_try(dice);
	if (err < 0)
		return err;

	mutex_lock(&dice->mutex);

	dice->substreams_counter++;
	err = snd_dice_stream_start_duplex(dice, 0);

	mutex_unlock(&dice->mutex);

	if (err < 0)
		snd_dice_stream_lock_release(dice);

	return err;
}

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

	mutex_lock(&dice->mutex);

	dice->substreams_counter--;
	snd_dice_stream_stop_duplex(dice);

	mutex_unlock(&dice->mutex);

	snd_dice_stream_lock_release(dice);
	return 0;
}

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

	spin_lock_irqsave(&dice->lock, flags);

	if (up)
		amdtp_stream_midi_trigger(&dice->tx_stream,
					  substrm->number, substrm);
	else
		amdtp_stream_midi_trigger(&dice->tx_stream,
					  substrm->number, NULL);

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

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

	spin_lock_irqsave(&dice->lock, flags);

	if (up)
		amdtp_stream_midi_trigger(&dice->rx_stream,
					  substrm->number, substrm);
	else
		amdtp_stream_midi_trigger(&dice->rx_stream,
					  substrm->number, NULL);

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

static struct snd_rawmidi_ops capture_ops = {
	.open		= midi_open,
	.close		= midi_close,
	.trigger	= midi_capture_trigger,
};

static struct snd_rawmidi_ops playback_ops = {
	.open		= midi_open,
	.close		= midi_close,
	.trigger	= midi_playback_trigger,
};

static void set_midi_substream_names(struct snd_dice *dice,
				     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", dice->card->shortname, subs->number + 1);
	}
}

int snd_dice_create_midi(struct snd_dice *dice)
{
	struct snd_rawmidi *rmidi;
	struct snd_rawmidi_str *str;
	unsigned int i, midi_in_ports, midi_out_ports;
	int err;

	midi_in_ports = midi_out_ports = 0;
	for (i = 0; i < 3; i++) {
		midi_in_ports = max(dice->tx_midi_ports[i], midi_in_ports);
		midi_out_ports = max(dice->rx_midi_ports[i], midi_out_ports);
	}

	if (midi_in_ports + midi_out_ports == 0)
		return 0;

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

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

	if (midi_in_ports > 0) {
		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;

		snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
				    &capture_ops);

		str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];

		set_midi_substream_names(dice, str);
	}

	if (midi_out_ports > 0) {
		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;

		snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
				    &playback_ops);

		str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];

		set_midi_substream_names(dice, str);
	}

	if ((midi_out_ports > 0) && (midi_in_ports > 0))
		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;

	return 0;
}
Commit	Line	Data
a113ff88 TS	1	/*
	2	* dice_midi.c - a part of driver for Dice based devices
	3	*
	4	* Copyright (c) 2014 Takashi Sakamoto
	5	*
	6	* Licensed under the terms of the GNU General Public License, version 2.
	7	*/
	8	#include "dice.h"
	9
	10	static int midi_open(struct snd_rawmidi_substream *substream)
	11	{
	12	struct snd_dice *dice = substream->rmidi->private_data;
	13	int err;
	14
	15	err = snd_dice_stream_lock_try(dice);
	16	if (err < 0)
	17	return err;
	18
	19	mutex_lock(&dice->mutex);
	20
	21	dice->substreams_counter++;
	22	err = snd_dice_stream_start_duplex(dice, 0);
	23
	24	mutex_unlock(&dice->mutex);
	25
	26	if (err < 0)
	27	snd_dice_stream_lock_release(dice);
	28
	29	return err;
	30	}
	31
	32	static int midi_close(struct snd_rawmidi_substream *substream)
	33	{
	34	struct snd_dice *dice = substream->rmidi->private_data;
	35
	36	mutex_lock(&dice->mutex);
	37
	38	dice->substreams_counter--;
	39	snd_dice_stream_stop_duplex(dice);
	40
	41	mutex_unlock(&dice->mutex);
	42
	43	snd_dice_stream_lock_release(dice);
	44	return 0;
	45	}
	46
	47	static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
	48	{
	49	struct snd_dice *dice = substrm->rmidi->private_data;
	50	unsigned long flags;
	51
	52	spin_lock_irqsave(&dice->lock, flags);
	53
	54	if (up)
	55	amdtp_stream_midi_trigger(&dice->tx_stream,
	56	substrm->number, substrm);
	57	else
	58	amdtp_stream_midi_trigger(&dice->tx_stream,
	59	substrm->number, NULL);
	60
	61	spin_unlock_irqrestore(&dice->lock, flags);
	62	}
	63
	64	static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
65	{
66	struct snd_dice *dice = substrm->rmidi->private_data;
67	unsigned long flags;
68
69	spin_lock_irqsave(&dice->lock, flags);
70
71	if (up)
72	amdtp_stream_midi_trigger(&dice->rx_stream,
73	substrm->number, substrm);
74	else
75	amdtp_stream_midi_trigger(&dice->rx_stream,
76	substrm->number, NULL);
77
78	spin_unlock_irqrestore(&dice->lock, flags);
79	}
80
81	static struct snd_rawmidi_ops capture_ops = {
82	.open = midi_open,
83	.close = midi_close,
84	.trigger = midi_capture_trigger,
85	};
86
87	static struct snd_rawmidi_ops playback_ops = {
88	.open = midi_open,
89	.close = midi_close,
90	.trigger = midi_playback_trigger,
91	};
92
93	static void set_midi_substream_names(struct snd_dice *dice,
94	struct snd_rawmidi_str *str)
95	{
96	struct snd_rawmidi_substream *subs;
97
98	list_for_each_entry(subs, &str->substreams, list) {
99	snprintf(subs->name, sizeof(subs->name),
100	"%s MIDI %d", dice->card->shortname, subs->number + 1);
101	}
102	}
103
104	int snd_dice_create_midi(struct snd_dice *dice)
105	{
106	struct snd_rawmidi *rmidi;
107	struct snd_rawmidi_str *str;
108	unsigned int i, midi_in_ports, midi_out_ports;
109	int err;
110
111	midi_in_ports = midi_out_ports = 0;
112	for (i = 0; i < 3; i++) {
113	midi_in_ports = max(dice->tx_midi_ports[i], midi_in_ports);
114	midi_out_ports = max(dice->rx_midi_ports[i], midi_out_ports);
115	}
116
117	if (midi_in_ports + midi_out_ports == 0)
118	return 0;
119
120	/* create midi ports */
121	err = snd_rawmidi_new(dice->card, dice->card->driver, 0,
122	midi_out_ports, midi_in_ports,
123	&rmidi);
124	if (err < 0)
125	return err;
126
127	snprintf(rmidi->name, sizeof(rmidi->name),
128	"%s MIDI", dice->card->shortname);
129	rmidi->private_data = dice;
130
131	if (midi_in_ports > 0) {
132	rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_INPUT;
133
134	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
135	&capture_ops);
136
137	str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
138
139	set_midi_substream_names(dice, str);
140	}
141
142	if (midi_out_ports > 0) {
143	rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_OUTPUT;
144
145	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
146	&playback_ops);
147
148	str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
149
150	set_midi_substream_names(dice, str);
151	}
152
153	if ((midi_out_ports > 0) && (midi_in_ports > 0))
154	rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_DUPLEX;
155
156	return 0;
157	}