2 * oxfw_midi.c - a part of driver for OXFW970/971 based devices
4 * Copyright (c) 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_oxfw *oxfw = substream->rmidi->private_data;
16 err = snd_oxfw_stream_lock_try(oxfw);
20 mutex_lock(&oxfw->mutex);
22 oxfw->capture_substreams++;
23 err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->tx_stream, 0, 0);
25 mutex_unlock(&oxfw->mutex);
28 snd_oxfw_stream_lock_release(oxfw);
33 static int midi_playback_open(struct snd_rawmidi_substream *substream)
35 struct snd_oxfw *oxfw = substream->rmidi->private_data;
38 err = snd_oxfw_stream_lock_try(oxfw);
42 mutex_lock(&oxfw->mutex);
44 oxfw->playback_substreams++;
45 err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->rx_stream, 0, 0);
47 mutex_unlock(&oxfw->mutex);
50 snd_oxfw_stream_lock_release(oxfw);
55 static int midi_capture_close(struct snd_rawmidi_substream *substream)
57 struct snd_oxfw *oxfw = substream->rmidi->private_data;
59 mutex_lock(&oxfw->mutex);
61 oxfw->capture_substreams--;
62 snd_oxfw_stream_stop_simplex(oxfw, &oxfw->tx_stream);
64 mutex_unlock(&oxfw->mutex);
66 snd_oxfw_stream_lock_release(oxfw);
70 static int midi_playback_close(struct snd_rawmidi_substream *substream)
72 struct snd_oxfw *oxfw = substream->rmidi->private_data;
74 mutex_lock(&oxfw->mutex);
76 oxfw->playback_substreams--;
77 snd_oxfw_stream_stop_simplex(oxfw, &oxfw->rx_stream);
79 mutex_unlock(&oxfw->mutex);
81 snd_oxfw_stream_lock_release(oxfw);
85 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
87 struct snd_oxfw *oxfw = substrm->rmidi->private_data;
90 spin_lock_irqsave(&oxfw->lock, flags);
93 amdtp_stream_midi_trigger(&oxfw->tx_stream,
94 substrm->number, substrm);
96 amdtp_stream_midi_trigger(&oxfw->tx_stream,
97 substrm->number, NULL);
99 spin_unlock_irqrestore(&oxfw->lock, flags);
102 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
104 struct snd_oxfw *oxfw = substrm->rmidi->private_data;
107 spin_lock_irqsave(&oxfw->lock, flags);
110 amdtp_stream_midi_trigger(&oxfw->rx_stream,
111 substrm->number, substrm);
113 amdtp_stream_midi_trigger(&oxfw->rx_stream,
114 substrm->number, NULL);
116 spin_unlock_irqrestore(&oxfw->lock, flags);
119 static struct snd_rawmidi_ops midi_capture_ops = {
120 .open = midi_capture_open,
121 .close = midi_capture_close,
122 .trigger = midi_capture_trigger,
125 static struct snd_rawmidi_ops midi_playback_ops = {
126 .open = midi_playback_open,
127 .close = midi_playback_close,
128 .trigger = midi_playback_trigger,
131 static void set_midi_substream_names(struct snd_oxfw *oxfw,
132 struct snd_rawmidi_str *str)
134 struct snd_rawmidi_substream *subs;
136 list_for_each_entry(subs, &str->substreams, list) {
137 snprintf(subs->name, sizeof(subs->name),
139 oxfw->card->shortname, subs->number + 1);
143 int snd_oxfw_create_midi(struct snd_oxfw *oxfw)
145 struct snd_oxfw_stream_formation formation;
146 struct snd_rawmidi *rmidi;
147 struct snd_rawmidi_str *str;
151 /* If its stream has MIDI conformant data channel, add one MIDI port */
152 for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
153 format = oxfw->tx_stream_formats[i];
154 if (format != NULL) {
155 err = snd_oxfw_stream_parse_format(format, &formation);
156 if (err >= 0 && formation.midi > 0)
157 oxfw->midi_input_ports = 1;
160 format = oxfw->rx_stream_formats[i];
161 if (format != NULL) {
162 err = snd_oxfw_stream_parse_format(format, &formation);
163 if (err >= 0 && formation.midi > 0)
164 oxfw->midi_output_ports = 1;
167 if ((oxfw->midi_input_ports == 0) && (oxfw->midi_output_ports == 0))
170 /* create midi ports */
171 err = snd_rawmidi_new(oxfw->card, oxfw->card->driver, 0,
172 oxfw->midi_output_ports, oxfw->midi_input_ports,
177 snprintf(rmidi->name, sizeof(rmidi->name),
178 "%s MIDI", oxfw->card->shortname);
179 rmidi->private_data = oxfw;
181 if (oxfw->midi_input_ports > 0) {
182 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
184 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
187 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
189 set_midi_substream_names(oxfw, str);
192 if (oxfw->midi_output_ports > 0) {
193 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
195 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
198 str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
200 set_midi_substream_names(oxfw, str);
203 if ((oxfw->midi_output_ports > 0) && (oxfw->midi_input_ports > 0))
204 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;