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review.shift-gmbh.com / SHIFTPHONES / kernel / common / 9e796e7d59e71f8a556cfbdc2ffa3aff0555dd0e / . / sound / firewire / motu / motu-midi.c
blob: f232f29589d0cd6de163a16e3d0f22986b519c40 [file] [log] [blame]
Takashi Sakamoto9e796e72017-03-22 21:30:23 +0900[diff] [blame^]1/*
2 * motu-midi.h - a part of driver for MOTU FireWire series
3 *
4 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
5 *
6 * Licensed under the terms of the GNU General Public License, version 2.
7 */
8#include "motu.h"
9
10static int midi_capture_open(struct snd_rawmidi_substream *substream)
11{
12 struct snd_motu *motu = substream->rmidi->private_data;
13 int err;
14
15 mutex_lock(&motu->mutex);
16
17 motu->capture_substreams++;
18 err = snd_motu_stream_start_duplex(motu, 0);
19
20 mutex_unlock(&motu->mutex);
21
22 return err;
23}
24
25static int midi_playback_open(struct snd_rawmidi_substream *substream)
26{
27 struct snd_motu *motu = substream->rmidi->private_data;
28 int err;
29
30 mutex_lock(&motu->mutex);
31
32 motu->playback_substreams++;
33 err = snd_motu_stream_start_duplex(motu, 0);
34
35 mutex_unlock(&motu->mutex);
36
37 return err;
38}
39
40static int midi_capture_close(struct snd_rawmidi_substream *substream)
41{
42 struct snd_motu *motu = substream->rmidi->private_data;
43
44 mutex_lock(&motu->mutex);
45
46 motu->capture_substreams--;
47 snd_motu_stream_stop_duplex(motu);
48
49 mutex_unlock(&motu->mutex);
50
51 return 0;
52}
53
54static int midi_playback_close(struct snd_rawmidi_substream *substream)
55{
56 struct snd_motu *motu = substream->rmidi->private_data;
57
58 mutex_lock(&motu->mutex);
59
60 motu->playback_substreams--;
61 snd_motu_stream_stop_duplex(motu);
62
63 mutex_unlock(&motu->mutex);
64
65 return 0;
66}
67
68static void midi_capture_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->tx_stream, substrm->number,
77 substrm);
78 else
79 amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
80 NULL);
81
82 spin_unlock_irqrestore(&motu->lock, flags);
83}
84
85static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
86{
87 struct snd_motu *motu = substrm->rmidi->private_data;
88 unsigned long flags;
89
90 spin_lock_irqsave(&motu->lock, flags);
91
92 if (up)
93 amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
94 substrm);
95 else
96 amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
97 NULL);
98
99 spin_unlock_irqrestore(&motu->lock, flags);
100}
101
102static void set_midi_substream_names(struct snd_motu *motu,
103 struct snd_rawmidi_str *str)
104{
105 struct snd_rawmidi_substream *subs;
106
107 list_for_each_entry(subs, &str->substreams, list) {
108 snprintf(subs->name, sizeof(subs->name),
109 "%s MIDI %d", motu->card->shortname, subs->number + 1);
110 }
111}
112
113int snd_motu_create_midi_devices(struct snd_motu *motu)
114{
115 static struct snd_rawmidi_ops capture_ops = {
116 .open = midi_capture_open,
117 .close = midi_capture_close,
118 .trigger = midi_capture_trigger,
119 };
120 static struct snd_rawmidi_ops playback_ops = {
121 .open = midi_playback_open,
122 .close = midi_playback_close,
123 .trigger = midi_playback_trigger,
124 };
125 struct snd_rawmidi *rmidi;
126 struct snd_rawmidi_str *str;
127 int err;
128
129 /* create midi ports */
130 err = snd_rawmidi_new(motu->card, motu->card->driver, 0, 1, 1, &rmidi);
131 if (err < 0)
132 return err;
133
134 snprintf(rmidi->name, sizeof(rmidi->name),
135 "%s MIDI", motu->card->shortname);
136 rmidi->private_data = motu;
137
138 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT |
139 SNDRV_RAWMIDI_INFO_OUTPUT |
140 SNDRV_RAWMIDI_INFO_DUPLEX;
141
142 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
143 &capture_ops);
144 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
145 set_midi_substream_names(motu, str);
146
147 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
148 &playback_ops);
149 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
150 set_midi_substream_names(motu, str);
151
152 return 0;
153}