2 * bebob_midi.c - a part of driver for BeBoB based devices
4 * Copyright (c) 2013-2014 Takashi Sakamoto
6 * Licensed under the terms of the GNU General Public License, version 2.
11 static int midi_capture_open(struct snd_rawmidi_substream *substream)
13 struct snd_bebob *bebob = substream->rmidi->private_data;
16 err = snd_bebob_stream_lock_try(bebob);
20 mutex_lock(&bebob->mutex);
21 bebob->substreams_counter++;
22 err = snd_bebob_stream_start_duplex(bebob, 0);
23 mutex_unlock(&bebob->mutex);
25 snd_bebob_stream_lock_release(bebob);
30 static int midi_playback_open(struct snd_rawmidi_substream *substream)
32 struct snd_bebob *bebob = substream->rmidi->private_data;
35 err = snd_bebob_stream_lock_try(bebob);
39 mutex_lock(&bebob->mutex);
40 bebob->substreams_counter++;
41 err = snd_bebob_stream_start_duplex(bebob, 0);
42 mutex_unlock(&bebob->mutex);
44 snd_bebob_stream_lock_release(bebob);
49 static int midi_capture_close(struct snd_rawmidi_substream *substream)
51 struct snd_bebob *bebob = substream->rmidi->private_data;
53 mutex_lock(&bebob->mutex);
54 bebob->substreams_counter--;
55 snd_bebob_stream_stop_duplex(bebob);
56 mutex_unlock(&bebob->mutex);
58 snd_bebob_stream_lock_release(bebob);
62 static int midi_playback_close(struct snd_rawmidi_substream *substream)
64 struct snd_bebob *bebob = substream->rmidi->private_data;
66 mutex_lock(&bebob->mutex);
67 bebob->substreams_counter--;
68 snd_bebob_stream_stop_duplex(bebob);
69 mutex_unlock(&bebob->mutex);
71 snd_bebob_stream_lock_release(bebob);
75 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
77 struct snd_bebob *bebob = substrm->rmidi->private_data;
80 spin_lock_irqsave(&bebob->lock, flags);
83 amdtp_am824_midi_trigger(&bebob->tx_stream,
84 substrm->number, substrm);
86 amdtp_am824_midi_trigger(&bebob->tx_stream,
87 substrm->number, NULL);
89 spin_unlock_irqrestore(&bebob->lock, flags);
92 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
94 struct snd_bebob *bebob = substrm->rmidi->private_data;
97 spin_lock_irqsave(&bebob->lock, flags);
100 amdtp_am824_midi_trigger(&bebob->rx_stream,
101 substrm->number, substrm);
103 amdtp_am824_midi_trigger(&bebob->rx_stream,
104 substrm->number, NULL);
106 spin_unlock_irqrestore(&bebob->lock, flags);
109 static struct snd_rawmidi_ops midi_capture_ops = {
110 .open = midi_capture_open,
111 .close = midi_capture_close,
112 .trigger = midi_capture_trigger,
115 static struct snd_rawmidi_ops midi_playback_ops = {
116 .open = midi_playback_open,
117 .close = midi_playback_close,
118 .trigger = midi_playback_trigger,
121 static void set_midi_substream_names(struct snd_bebob *bebob,
122 struct snd_rawmidi_str *str)
124 struct snd_rawmidi_substream *subs;
126 list_for_each_entry(subs, &str->substreams, list) {
127 snprintf(subs->name, sizeof(subs->name),
129 bebob->card->shortname, subs->number + 1);
133 int snd_bebob_create_midi_devices(struct snd_bebob *bebob)
135 struct snd_rawmidi *rmidi;
136 struct snd_rawmidi_str *str;
139 /* create midi ports */
140 err = snd_rawmidi_new(bebob->card, bebob->card->driver, 0,
141 bebob->midi_output_ports, bebob->midi_input_ports,
146 snprintf(rmidi->name, sizeof(rmidi->name),
147 "%s MIDI", bebob->card->shortname);
148 rmidi->private_data = bebob;
150 if (bebob->midi_input_ports > 0) {
151 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
153 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
156 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
158 set_midi_substream_names(bebob, str);
161 if (bebob->midi_output_ports > 0) {
162 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
164 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
167 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
169 set_midi_substream_names(bebob, str);
172 if ((bebob->midi_output_ports > 0) && (bebob->midi_input_ports > 0))
173 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;