aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/sound/firewire/digi00x/digi00x-midi.c
blob: 2b57ece891018814e69868396df6f48db0ee1253 (plain) (blame)
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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
// SPDX-License-Identifier: GPL-2.0-only
/*
 * digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family
 *
 * Copyright (c) 2014-2015 Takashi Sakamoto
 */

#include "digi00x.h"

static int midi_open(struct snd_rawmidi_substream *substream)
{
	struct snd_dg00x *dg00x = substream->rmidi->private_data;
	int err;

	err = snd_dg00x_stream_lock_try(dg00x);
	if (err < 0)
		return err;

	mutex_lock(&dg00x->mutex);
	err = snd_dg00x_stream_reserve_duplex(dg00x, 0);
	if (err >= 0) {
		++dg00x->substreams_counter;
		err = snd_dg00x_stream_start_duplex(dg00x);
		if (err < 0)
			--dg00x->substreams_counter;
	}
	mutex_unlock(&dg00x->mutex);
	if (err < 0)
		snd_dg00x_stream_lock_release(dg00x);

	return err;
}

static int midi_close(struct snd_rawmidi_substream *substream)
{
	struct snd_dg00x *dg00x = substream->rmidi->private_data;

	mutex_lock(&dg00x->mutex);
	--dg00x->substreams_counter;
	snd_dg00x_stream_stop_duplex(dg00x);
	mutex_unlock(&dg00x->mutex);

	snd_dg00x_stream_lock_release(dg00x);
	return 0;
}

static void midi_capture_trigger(struct snd_rawmidi_substream *substream,
				 int up)
{
	struct snd_dg00x *dg00x = substream->rmidi->private_data;
	unsigned int port;
	unsigned long flags;

	if (substream->rmidi->device == 0)
		port = substream->number;
	else
		port = 2;

	spin_lock_irqsave(&dg00x->lock, flags);

	if (up)
		amdtp_dot_midi_trigger(&dg00x->tx_stream, port, substream);
	else
		amdtp_dot_midi_trigger(&dg00x->tx_stream, port, NULL);

	spin_unlock_irqrestore(&dg00x->lock, flags);
}

static void midi_playback_trigger(struct snd_rawmidi_substream *substream,
				  int up)
{
	struct snd_dg00x *dg00x = substream->rmidi->private_data;
	unsigned int port;
	unsigned long flags;

	if (substream->rmidi->device == 0)
		port = substream->number;
	else
		port = 2;

	spin_lock_irqsave(&dg00x->lock, flags);

	if (up)
		amdtp_dot_midi_trigger(&dg00x->rx_stream, port, substream);
	else
		amdtp_dot_midi_trigger(&dg00x->rx_stream, port, NULL);

	spin_unlock_irqrestore(&dg00x->lock, flags);
}

static void set_substream_names(struct snd_dg00x *dg00x,
				struct snd_rawmidi *rmidi, bool is_console)
{
	struct snd_rawmidi_substream *subs;
	struct snd_rawmidi_str *str;
	int i;

	for (i = 0; i < 2; ++i) {
		str = &rmidi->streams[i];

		list_for_each_entry(subs, &str->substreams, list) {
			if (!is_console) {
				snprintf(subs->name, sizeof(subs->name),
					 "%s MIDI %d",
					 dg00x->card->shortname,
					 subs->number + 1);
			} else {
				snprintf(subs->name, sizeof(subs->name),
					 "%s control",
					 dg00x->card->shortname);
			}
		}
	}
}

static int add_substream_pair(struct snd_dg00x *dg00x, unsigned int out_ports,
			      unsigned int in_ports, bool is_console)
{
	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,
	};
	const char *label;
	struct snd_rawmidi *rmidi;
	int err;

	/* Add physical midi ports. */
	err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, is_console,
			      out_ports, in_ports, &rmidi);
	if (err < 0)
		return err;
	rmidi->private_data = dg00x;

	if (!is_console)
		label = "%s control";
	else
		label = "%s MIDI";
	snprintf(rmidi->name, sizeof(rmidi->name), label,
		 dg00x->card->shortname);

	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &playback_ops);
	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &capture_ops);

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

	set_substream_names(dg00x, rmidi, is_console);

	return 0;
}

int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x)
{
	int err;

	/* Add physical midi ports. */
	err = add_substream_pair(dg00x, DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS,
				 false);
	if (err < 0)
		return err;

	if (dg00x->is_console)
		err = add_substream_pair(dg00x, 1, 1, true);

	return err;
}