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 atomic_inc(&bebob->capture_substreams);
21 err = snd_bebob_stream_start_duplex(bebob, 0);
23 snd_bebob_stream_lock_release(bebob);
28 static int midi_playback_open(struct snd_rawmidi_substream *substream)
30 struct snd_bebob *bebob = substream->rmidi->private_data;
33 err = snd_bebob_stream_lock_try(bebob);
37 atomic_inc(&bebob->playback_substreams);
38 err = snd_bebob_stream_start_duplex(bebob, 0);
40 snd_bebob_stream_lock_release(bebob);
45 static int midi_capture_close(struct snd_rawmidi_substream *substream)
47 struct snd_bebob *bebob = substream->rmidi->private_data;
49 atomic_dec(&bebob->capture_substreams);
50 snd_bebob_stream_stop_duplex(bebob);
52 snd_bebob_stream_lock_release(bebob);
56 static int midi_playback_close(struct snd_rawmidi_substream *substream)
58 struct snd_bebob *bebob = substream->rmidi->private_data;
60 atomic_dec(&bebob->playback_substreams);
61 snd_bebob_stream_stop_duplex(bebob);
63 snd_bebob_stream_lock_release(bebob);
67 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
69 struct snd_bebob *bebob = substrm->rmidi->private_data;
72 spin_lock_irqsave(&bebob->lock, flags);
75 amdtp_stream_midi_trigger(&bebob->tx_stream,
76 substrm->number, substrm);
78 amdtp_stream_midi_trigger(&bebob->tx_stream,
79 substrm->number, NULL);
81 spin_unlock_irqrestore(&bebob->lock, flags);
84 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
86 struct snd_bebob *bebob = substrm->rmidi->private_data;
89 spin_lock_irqsave(&bebob->lock, flags);
92 amdtp_stream_midi_trigger(&bebob->rx_stream,
93 substrm->number, substrm);
95 amdtp_stream_midi_trigger(&bebob->rx_stream,
96 substrm->number, NULL);
98 spin_unlock_irqrestore(&bebob->lock, flags);
101 static struct snd_rawmidi_ops midi_capture_ops = {
102 .open = midi_capture_open,
103 .close = midi_capture_close,
104 .trigger = midi_capture_trigger,
107 static struct snd_rawmidi_ops midi_playback_ops = {
108 .open = midi_playback_open,
109 .close = midi_playback_close,
110 .trigger = midi_playback_trigger,
113 static void set_midi_substream_names(struct snd_bebob *bebob,
114 struct snd_rawmidi_str *str)
116 struct snd_rawmidi_substream *subs;
118 list_for_each_entry(subs, &str->substreams, list) {
119 snprintf(subs->name, sizeof(subs->name),
121 bebob->card->shortname, subs->number + 1);
125 int snd_bebob_create_midi_devices(struct snd_bebob *bebob)
127 struct snd_rawmidi *rmidi;
128 struct snd_rawmidi_str *str;
131 /* create midi ports */
132 err = snd_rawmidi_new(bebob->card, bebob->card->driver, 0,
133 bebob->midi_output_ports, bebob->midi_input_ports,
138 snprintf(rmidi->name, sizeof(rmidi->name),
139 "%s MIDI", bebob->card->shortname);
140 rmidi->private_data = bebob;
142 if (bebob->midi_input_ports > 0) {
143 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
145 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
148 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
150 set_midi_substream_names(bebob, str);
153 if (bebob->midi_output_ports > 0) {
154 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
156 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
159 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
161 set_midi_substream_names(bebob, str);
164 if ((bebob->midi_output_ports > 0) && (bebob->midi_input_ports > 0))
165 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;