2 * ff-midi.c - a part of driver for RME Fireface series
4 * Copyright (c) 2015-2017 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)
17 static int midi_playback_open(struct snd_rawmidi_substream *substream)
19 struct snd_ff *ff = substream->rmidi->private_data;
21 /* Initialize internal status. */
22 ff->running_status[substream->number] = 0;
23 ff->rx_midi_error[substream->number] = false;
25 WRITE_ONCE(ff->rx_midi_substreams[substream->number], substream);
30 static int midi_capture_close(struct snd_rawmidi_substream *substream)
36 static int midi_playback_close(struct snd_rawmidi_substream *substream)
38 struct snd_ff *ff = substream->rmidi->private_data;
40 cancel_work_sync(&ff->rx_midi_work[substream->number]);
41 WRITE_ONCE(ff->rx_midi_substreams[substream->number], NULL);
46 static void midi_capture_trigger(struct snd_rawmidi_substream *substream,
49 struct snd_ff *ff = substream->rmidi->private_data;
52 spin_lock_irqsave(&ff->lock, flags);
55 WRITE_ONCE(ff->tx_midi_substreams[substream->number],
58 WRITE_ONCE(ff->tx_midi_substreams[substream->number], NULL);
60 spin_unlock_irqrestore(&ff->lock, flags);
63 static void midi_playback_trigger(struct snd_rawmidi_substream *substream,
66 struct snd_ff *ff = substream->rmidi->private_data;
69 spin_lock_irqsave(&ff->lock, flags);
71 if (up || !ff->rx_midi_error[substream->number])
72 schedule_work(&ff->rx_midi_work[substream->number]);
74 spin_unlock_irqrestore(&ff->lock, flags);
77 static void set_midi_substream_names(struct snd_rawmidi_str *stream,
78 const char *const name)
80 struct snd_rawmidi_substream *substream;
82 list_for_each_entry(substream, &stream->substreams, list) {
83 snprintf(substream->name, sizeof(substream->name),
84 "%s MIDI %d", name, substream->number + 1);
88 int snd_ff_create_midi_devices(struct snd_ff *ff)
90 static const struct snd_rawmidi_ops midi_capture_ops = {
91 .open = midi_capture_open,
92 .close = midi_capture_close,
93 .trigger = midi_capture_trigger,
95 static const struct snd_rawmidi_ops midi_playback_ops = {
96 .open = midi_playback_open,
97 .close = midi_playback_close,
98 .trigger = midi_playback_trigger,
100 struct snd_rawmidi *rmidi;
101 struct snd_rawmidi_str *stream;
104 err = snd_rawmidi_new(ff->card, ff->card->driver, 0,
105 ff->spec->midi_out_ports, ff->spec->midi_in_ports,
110 snprintf(rmidi->name, sizeof(rmidi->name),
111 "%s MIDI", ff->card->shortname);
112 rmidi->private_data = ff;
114 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
115 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
117 stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
118 set_midi_substream_names(stream, ff->card->shortname);
120 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
121 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
123 stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
124 set_midi_substream_names(stream, ff->card->shortname);
126 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;