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/*
* tascam-midi.c - a part of driver for TASCAM FireWire series
*
* Copyright (c) 2015 Takashi Sakamoto
*
* Licensed under the terms of the GNU General Public License, version 2.
*/
#include "tascam.h"
static int midi_capture_open(struct snd_rawmidi_substream *substream)
{
/* Do nothing. */
return 0;
}
static int midi_playback_open(struct snd_rawmidi_substream *substream)
{
struct snd_tscm *tscm = substream->rmidi->private_data;
snd_fw_async_midi_port_init(&tscm->out_ports[substream->number]);
return 0;
}
static int midi_capture_close(struct snd_rawmidi_substream *substream)
{
/* Do nothing. */
return 0;
}
static int midi_playback_close(struct snd_rawmidi_substream *substream)
{
struct snd_tscm *tscm = substream->rmidi->private_data;
snd_fw_async_midi_port_finish(&tscm->out_ports[substream->number]);
return 0;
}
static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
{
struct snd_tscm *tscm = substrm->rmidi->private_data;
unsigned long flags;
spin_lock_irqsave(&tscm->lock, flags);
if (up)
tscm->tx_midi_substreams[substrm->number] = substrm;
else
tscm->tx_midi_substreams[substrm->number] = NULL;
spin_unlock_irqrestore(&tscm->lock, flags);
}
static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
{
struct snd_tscm *tscm = substrm->rmidi->private_data;
unsigned long flags;
spin_lock_irqsave(&tscm->lock, flags);
if (up)
snd_fw_async_midi_port_run(&tscm->out_ports[substrm->number],
substrm);
spin_unlock_irqrestore(&tscm->lock, flags);
}
int snd_tscm_create_midi_devices(struct snd_tscm *tscm)
{
static const struct snd_rawmidi_ops capture_ops = {
.open = midi_capture_open,
.close = midi_capture_close,
.trigger = midi_capture_trigger,
};
static const struct snd_rawmidi_ops playback_ops = {
.open = midi_playback_open,
.close = midi_playback_close,
.trigger = midi_playback_trigger,
};
struct snd_rawmidi *rmidi;
struct snd_rawmidi_str *stream;
struct snd_rawmidi_substream *subs;
int err;
err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0,
tscm->spec->midi_playback_ports,
tscm->spec->midi_capture_ports,
&rmidi);
if (err < 0)
return err;
snprintf(rmidi->name, sizeof(rmidi->name),
"%s MIDI", tscm->card->shortname);
rmidi->private_data = tscm;
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
&capture_ops);
stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
/* Set port names for MIDI input. */
list_for_each_entry(subs, &stream->substreams, list) {
/* TODO: support virtual MIDI ports. */
if (subs->number < tscm->spec->midi_capture_ports) {
/* Hardware MIDI ports. */
snprintf(subs->name, sizeof(subs->name),
"%s MIDI %d",
tscm->card->shortname, subs->number + 1);
}
}
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
&playback_ops);
stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
/* Set port names for MIDI ourput. */
list_for_each_entry(subs, &stream->substreams, list) {
if (subs->number < tscm->spec->midi_playback_ports) {
/* Hardware MIDI ports only. */
snprintf(subs->name, sizeof(subs->name),
"%s MIDI %d",
tscm->card->shortname, subs->number + 1);
}
}
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
return 0;
}
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