Loading...
1/*
2 * bebob_midi.c - a part of driver for BeBoB based devices
3 *
4 * Copyright (c) 2013-2014 Takashi Sakamoto
5 *
6 * Licensed under the terms of the GNU General Public License, version 2.
7 */
8
9#include "bebob.h"
10
11static int midi_capture_open(struct snd_rawmidi_substream *substream)
12{
13 struct snd_bebob *bebob = substream->rmidi->private_data;
14 int err;
15
16 err = snd_bebob_stream_lock_try(bebob);
17 if (err < 0)
18 goto end;
19
20 mutex_lock(&bebob->mutex);
21 bebob->substreams_counter++;
22 err = snd_bebob_stream_start_duplex(bebob, 0);
23 mutex_unlock(&bebob->mutex);
24 if (err < 0)
25 snd_bebob_stream_lock_release(bebob);
26end:
27 return err;
28}
29
30static int midi_playback_open(struct snd_rawmidi_substream *substream)
31{
32 struct snd_bebob *bebob = substream->rmidi->private_data;
33 int err;
34
35 err = snd_bebob_stream_lock_try(bebob);
36 if (err < 0)
37 goto end;
38
39 mutex_lock(&bebob->mutex);
40 bebob->substreams_counter++;
41 err = snd_bebob_stream_start_duplex(bebob, 0);
42 mutex_unlock(&bebob->mutex);
43 if (err < 0)
44 snd_bebob_stream_lock_release(bebob);
45end:
46 return err;
47}
48
49static int midi_capture_close(struct snd_rawmidi_substream *substream)
50{
51 struct snd_bebob *bebob = substream->rmidi->private_data;
52
53 mutex_lock(&bebob->mutex);
54 bebob->substreams_counter--;
55 snd_bebob_stream_stop_duplex(bebob);
56 mutex_unlock(&bebob->mutex);
57
58 snd_bebob_stream_lock_release(bebob);
59 return 0;
60}
61
62static int midi_playback_close(struct snd_rawmidi_substream *substream)
63{
64 struct snd_bebob *bebob = substream->rmidi->private_data;
65
66 mutex_lock(&bebob->mutex);
67 bebob->substreams_counter--;
68 snd_bebob_stream_stop_duplex(bebob);
69 mutex_unlock(&bebob->mutex);
70
71 snd_bebob_stream_lock_release(bebob);
72 return 0;
73}
74
75static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
76{
77 struct snd_bebob *bebob = substrm->rmidi->private_data;
78 unsigned long flags;
79
80 spin_lock_irqsave(&bebob->lock, flags);
81
82 if (up)
83 amdtp_am824_midi_trigger(&bebob->tx_stream,
84 substrm->number, substrm);
85 else
86 amdtp_am824_midi_trigger(&bebob->tx_stream,
87 substrm->number, NULL);
88
89 spin_unlock_irqrestore(&bebob->lock, flags);
90}
91
92static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
93{
94 struct snd_bebob *bebob = substrm->rmidi->private_data;
95 unsigned long flags;
96
97 spin_lock_irqsave(&bebob->lock, flags);
98
99 if (up)
100 amdtp_am824_midi_trigger(&bebob->rx_stream,
101 substrm->number, substrm);
102 else
103 amdtp_am824_midi_trigger(&bebob->rx_stream,
104 substrm->number, NULL);
105
106 spin_unlock_irqrestore(&bebob->lock, flags);
107}
108
109static struct snd_rawmidi_ops midi_capture_ops = {
110 .open = midi_capture_open,
111 .close = midi_capture_close,
112 .trigger = midi_capture_trigger,
113};
114
115static struct snd_rawmidi_ops midi_playback_ops = {
116 .open = midi_playback_open,
117 .close = midi_playback_close,
118 .trigger = midi_playback_trigger,
119};
120
121static void set_midi_substream_names(struct snd_bebob *bebob,
122 struct snd_rawmidi_str *str)
123{
124 struct snd_rawmidi_substream *subs;
125
126 list_for_each_entry(subs, &str->substreams, list) {
127 snprintf(subs->name, sizeof(subs->name),
128 "%s MIDI %d",
129 bebob->card->shortname, subs->number + 1);
130 }
131}
132
133int snd_bebob_create_midi_devices(struct snd_bebob *bebob)
134{
135 struct snd_rawmidi *rmidi;
136 struct snd_rawmidi_str *str;
137 int err;
138
139 /* create midi ports */
140 err = snd_rawmidi_new(bebob->card, bebob->card->driver, 0,
141 bebob->midi_output_ports, bebob->midi_input_ports,
142 &rmidi);
143 if (err < 0)
144 return err;
145
146 snprintf(rmidi->name, sizeof(rmidi->name),
147 "%s MIDI", bebob->card->shortname);
148 rmidi->private_data = bebob;
149
150 if (bebob->midi_input_ports > 0) {
151 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
152
153 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
154 &midi_capture_ops);
155
156 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
157
158 set_midi_substream_names(bebob, str);
159 }
160
161 if (bebob->midi_output_ports > 0) {
162 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
163
164 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
165 &midi_playback_ops);
166
167 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
168
169 set_midi_substream_names(bebob, str);
170 }
171
172 if ((bebob->midi_output_ports > 0) && (bebob->midi_input_ports > 0))
173 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
174
175 return 0;
176}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * bebob_midi.c - a part of driver for BeBoB based devices
4 *
5 * Copyright (c) 2013-2014 Takashi Sakamoto
6 */
7
8#include "bebob.h"
9
10static int midi_open(struct snd_rawmidi_substream *substream)
11{
12 struct snd_bebob *bebob = substream->rmidi->private_data;
13 int err;
14
15 err = snd_bebob_stream_lock_try(bebob);
16 if (err < 0)
17 return err;
18
19 mutex_lock(&bebob->mutex);
20 err = snd_bebob_stream_reserve_duplex(bebob, 0, 0, 0);
21 if (err >= 0) {
22 ++bebob->substreams_counter;
23 err = snd_bebob_stream_start_duplex(bebob);
24 if (err < 0)
25 --bebob->substreams_counter;
26 }
27 mutex_unlock(&bebob->mutex);
28 if (err < 0)
29 snd_bebob_stream_lock_release(bebob);
30
31 return err;
32}
33
34static int midi_close(struct snd_rawmidi_substream *substream)
35{
36 struct snd_bebob *bebob = substream->rmidi->private_data;
37
38 mutex_lock(&bebob->mutex);
39 bebob->substreams_counter--;
40 snd_bebob_stream_stop_duplex(bebob);
41 mutex_unlock(&bebob->mutex);
42
43 snd_bebob_stream_lock_release(bebob);
44 return 0;
45}
46
47static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
48{
49 struct snd_bebob *bebob = substrm->rmidi->private_data;
50 unsigned long flags;
51
52 spin_lock_irqsave(&bebob->lock, flags);
53
54 if (up)
55 amdtp_am824_midi_trigger(&bebob->tx_stream,
56 substrm->number, substrm);
57 else
58 amdtp_am824_midi_trigger(&bebob->tx_stream,
59 substrm->number, NULL);
60
61 spin_unlock_irqrestore(&bebob->lock, flags);
62}
63
64static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
65{
66 struct snd_bebob *bebob = substrm->rmidi->private_data;
67 unsigned long flags;
68
69 spin_lock_irqsave(&bebob->lock, flags);
70
71 if (up)
72 amdtp_am824_midi_trigger(&bebob->rx_stream,
73 substrm->number, substrm);
74 else
75 amdtp_am824_midi_trigger(&bebob->rx_stream,
76 substrm->number, NULL);
77
78 spin_unlock_irqrestore(&bebob->lock, flags);
79}
80
81static void set_midi_substream_names(struct snd_bebob *bebob,
82 struct snd_rawmidi_str *str)
83{
84 struct snd_rawmidi_substream *subs;
85
86 list_for_each_entry(subs, &str->substreams, list) {
87 scnprintf(subs->name, sizeof(subs->name),
88 "%s MIDI %d",
89 bebob->card->shortname, subs->number + 1);
90 }
91}
92
93int snd_bebob_create_midi_devices(struct snd_bebob *bebob)
94{
95 static const struct snd_rawmidi_ops capture_ops = {
96 .open = midi_open,
97 .close = midi_close,
98 .trigger = midi_capture_trigger,
99 };
100 static const struct snd_rawmidi_ops playback_ops = {
101 .open = midi_open,
102 .close = midi_close,
103 .trigger = midi_playback_trigger,
104 };
105 struct snd_rawmidi *rmidi;
106 struct snd_rawmidi_str *str;
107 int err;
108
109 /* create midi ports */
110 err = snd_rawmidi_new(bebob->card, bebob->card->driver, 0,
111 bebob->midi_output_ports, bebob->midi_input_ports,
112 &rmidi);
113 if (err < 0)
114 return err;
115
116 snprintf(rmidi->name, sizeof(rmidi->name),
117 "%s MIDI", bebob->card->shortname);
118 rmidi->private_data = bebob;
119
120 if (bebob->midi_input_ports > 0) {
121 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
122
123 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
124 &capture_ops);
125
126 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
127
128 set_midi_substream_names(bebob, str);
129 }
130
131 if (bebob->midi_output_ports > 0) {
132 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
133
134 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
135 &playback_ops);
136
137 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
138
139 set_midi_substream_names(bebob, str);
140 }
141
142 if ((bebob->midi_output_ports > 0) && (bebob->midi_input_ports > 0))
143 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
144
145 return 0;
146}