170 lines
3.9 KiB
C
170 lines
3.9 KiB
C
/*
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* motu-midi.h - a part of driver for MOTU FireWire series
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*
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* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include "motu.h"
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static int midi_capture_open(struct snd_rawmidi_substream *substream)
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{
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struct snd_motu *motu = substream->rmidi->private_data;
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int err;
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err = snd_motu_stream_lock_try(motu);
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if (err < 0)
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return err;
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mutex_lock(&motu->mutex);
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motu->capture_substreams++;
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err = snd_motu_stream_start_duplex(motu, 0);
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mutex_unlock(&motu->mutex);
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if (err < 0)
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snd_motu_stream_lock_release(motu);
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return err;
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}
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static int midi_playback_open(struct snd_rawmidi_substream *substream)
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{
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struct snd_motu *motu = substream->rmidi->private_data;
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int err;
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err = snd_motu_stream_lock_try(motu);
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if (err < 0)
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return err;
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mutex_lock(&motu->mutex);
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motu->playback_substreams++;
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err = snd_motu_stream_start_duplex(motu, 0);
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mutex_unlock(&motu->mutex);
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if (err < 0)
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snd_motu_stream_lock_release(motu);
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return err;
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}
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static int midi_capture_close(struct snd_rawmidi_substream *substream)
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{
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struct snd_motu *motu = substream->rmidi->private_data;
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mutex_lock(&motu->mutex);
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motu->capture_substreams--;
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snd_motu_stream_stop_duplex(motu);
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mutex_unlock(&motu->mutex);
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snd_motu_stream_lock_release(motu);
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return 0;
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}
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static int midi_playback_close(struct snd_rawmidi_substream *substream)
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{
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struct snd_motu *motu = substream->rmidi->private_data;
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mutex_lock(&motu->mutex);
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motu->playback_substreams--;
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snd_motu_stream_stop_duplex(motu);
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mutex_unlock(&motu->mutex);
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snd_motu_stream_lock_release(motu);
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return 0;
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}
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static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
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{
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struct snd_motu *motu = substrm->rmidi->private_data;
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unsigned long flags;
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spin_lock_irqsave(&motu->lock, flags);
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if (up)
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amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
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substrm);
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else
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amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
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NULL);
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spin_unlock_irqrestore(&motu->lock, flags);
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}
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static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
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{
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struct snd_motu *motu = substrm->rmidi->private_data;
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unsigned long flags;
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spin_lock_irqsave(&motu->lock, flags);
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if (up)
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amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
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substrm);
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else
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amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
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NULL);
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spin_unlock_irqrestore(&motu->lock, flags);
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}
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static void set_midi_substream_names(struct snd_motu *motu,
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struct snd_rawmidi_str *str)
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{
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struct snd_rawmidi_substream *subs;
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list_for_each_entry(subs, &str->substreams, list) {
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snprintf(subs->name, sizeof(subs->name),
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"%s MIDI %d", motu->card->shortname, subs->number + 1);
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}
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}
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int snd_motu_create_midi_devices(struct snd_motu *motu)
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{
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static const struct snd_rawmidi_ops capture_ops = {
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.open = midi_capture_open,
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.close = midi_capture_close,
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.trigger = midi_capture_trigger,
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};
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static const struct snd_rawmidi_ops playback_ops = {
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.open = midi_playback_open,
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.close = midi_playback_close,
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.trigger = midi_playback_trigger,
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};
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struct snd_rawmidi *rmidi;
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struct snd_rawmidi_str *str;
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int err;
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/* create midi ports */
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err = snd_rawmidi_new(motu->card, motu->card->driver, 0, 1, 1, &rmidi);
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if (err < 0)
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return err;
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snprintf(rmidi->name, sizeof(rmidi->name),
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"%s MIDI", motu->card->shortname);
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rmidi->private_data = motu;
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT |
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SNDRV_RAWMIDI_INFO_OUTPUT |
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SNDRV_RAWMIDI_INFO_DUPLEX;
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
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&capture_ops);
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str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
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set_midi_substream_names(motu, str);
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
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&playback_ops);
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str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
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set_midi_substream_names(motu, str);
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return 0;
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}
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