summaryrefslogtreecommitdiff
path: root/sound/firewire/tascam/tascam-midi.c
blob: 02eed2dce435f24e41f2f5a5b06104d52c2f10e0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
// SPDX-License-Identifier: GPL-2.0-only
/*
 * tascam-midi.c - a part of driver for TASCAM FireWire series
 *
 * Copyright (c) 2015 Takashi Sakamoto
 */

#include "tascam.h"

static int midi_capture_open(struct snd_rawmidi_substream *substream)
{
	/* Do nothing. */
	return 0;
}

static int midi_playback_open(struct snd_rawmidi_substream *substream)
{
	struct snd_tscm *tscm = substream->rmidi->private_data;

	snd_fw_async_midi_port_init(&tscm->out_ports[substream->number]);

	return 0;
}

static int midi_capture_close(struct snd_rawmidi_substream *substream)
{
	/* Do nothing. */
	return 0;
}

static int midi_playback_close(struct snd_rawmidi_substream *substream)
{
	return 0;
}

static void midi_playback_drain(struct snd_rawmidi_substream *substream)
{
	struct snd_tscm *tscm = substream->rmidi->private_data;

	snd_fw_async_midi_port_finish(&tscm->out_ports[substream->number]);
}

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

	spin_lock_irqsave(&tscm->lock, flags);

	if (up)
		tscm->tx_midi_substreams[substrm->number] = substrm;
	else
		tscm->tx_midi_substreams[substrm->number] = NULL;

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

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

	spin_lock_irqsave(&tscm->lock, flags);

	if (up)
		snd_fw_async_midi_port_run(&tscm->out_ports[substrm->number],
					   substrm);

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

int snd_tscm_create_midi_devices(struct snd_tscm *tscm)
{
	static const struct snd_rawmidi_ops capture_ops = {
		.open		= midi_capture_open,
		.close		= midi_capture_close,
		.trigger	= midi_capture_trigger,
	};
	static const struct snd_rawmidi_ops playback_ops = {
		.open		= midi_playback_open,
		.close		= midi_playback_close,
		.drain		= midi_playback_drain,
		.trigger	= midi_playback_trigger,
	};
	struct snd_rawmidi *rmidi;
	struct snd_rawmidi_str *stream;
	struct snd_rawmidi_substream *subs;
	int err;

	err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0,
			      tscm->spec->midi_playback_ports,
			      tscm->spec->midi_capture_ports,
			      &rmidi);
	if (err < 0)
		return err;

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

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
			    &capture_ops);
	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];

	/* Set port names for MIDI input. */
	list_for_each_entry(subs, &stream->substreams, list) {
		/* TODO: support virtual MIDI ports. */
		if (subs->number < tscm->spec->midi_capture_ports) {
			/* Hardware MIDI ports. */
			snprintf(subs->name, sizeof(subs->name),
				 "%s MIDI %d",
				 tscm->card->shortname, subs->number + 1);
		}
	}

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
			    &playback_ops);
	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];

	/* Set port names for MIDI ourput. */
	list_for_each_entry(subs, &stream->substreams, list) {
		if (subs->number < tscm->spec->midi_playback_ports) {
			/* Hardware MIDI ports only. */
			snprintf(subs->name, sizeof(subs->name),
				 "%s MIDI %d",
				 tscm->card->shortname, subs->number + 1);
		}
	}

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;

	return 0;
}