137 lines
3.2 KiB
C
137 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* motu-midi.h - a part of driver for MOTU FireWire series
|
|
*
|
|
* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
|
|
*/
|
|
#include "motu.h"
|
|
|
|
static int midi_open(struct snd_rawmidi_substream *substream)
|
|
{
|
|
struct snd_motu *motu = substream->rmidi->private_data;
|
|
int err;
|
|
|
|
err = snd_motu_stream_lock_try(motu);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
mutex_lock(&motu->mutex);
|
|
|
|
err = snd_motu_stream_reserve_duplex(motu, 0);
|
|
if (err >= 0) {
|
|
++motu->substreams_counter;
|
|
err = snd_motu_stream_start_duplex(motu);
|
|
if (err < 0)
|
|
--motu->substreams_counter;
|
|
}
|
|
|
|
mutex_unlock(&motu->mutex);
|
|
|
|
if (err < 0)
|
|
snd_motu_stream_lock_release(motu);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int midi_close(struct snd_rawmidi_substream *substream)
|
|
{
|
|
struct snd_motu *motu = substream->rmidi->private_data;
|
|
|
|
mutex_lock(&motu->mutex);
|
|
|
|
--motu->substreams_counter;
|
|
snd_motu_stream_stop_duplex(motu);
|
|
|
|
mutex_unlock(&motu->mutex);
|
|
|
|
snd_motu_stream_lock_release(motu);
|
|
return 0;
|
|
}
|
|
|
|
static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
|
|
{
|
|
struct snd_motu *motu = substrm->rmidi->private_data;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&motu->lock, flags);
|
|
|
|
if (up)
|
|
amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
|
|
substrm);
|
|
else
|
|
amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
|
|
NULL);
|
|
|
|
spin_unlock_irqrestore(&motu->lock, flags);
|
|
}
|
|
|
|
static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
|
|
{
|
|
struct snd_motu *motu = substrm->rmidi->private_data;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&motu->lock, flags);
|
|
|
|
if (up)
|
|
amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
|
|
substrm);
|
|
else
|
|
amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
|
|
NULL);
|
|
|
|
spin_unlock_irqrestore(&motu->lock, flags);
|
|
}
|
|
|
|
static void set_midi_substream_names(struct snd_motu *motu,
|
|
struct snd_rawmidi_str *str)
|
|
{
|
|
struct snd_rawmidi_substream *subs;
|
|
|
|
list_for_each_entry(subs, &str->substreams, list) {
|
|
snprintf(subs->name, sizeof(subs->name),
|
|
"%s MIDI %d", motu->card->shortname, subs->number + 1);
|
|
}
|
|
}
|
|
|
|
int snd_motu_create_midi_devices(struct snd_motu *motu)
|
|
{
|
|
static const struct snd_rawmidi_ops capture_ops = {
|
|
.open = midi_open,
|
|
.close = midi_close,
|
|
.trigger = midi_capture_trigger,
|
|
};
|
|
static const struct snd_rawmidi_ops playback_ops = {
|
|
.open = midi_open,
|
|
.close = midi_close,
|
|
.trigger = midi_playback_trigger,
|
|
};
|
|
struct snd_rawmidi *rmidi;
|
|
struct snd_rawmidi_str *str;
|
|
int err;
|
|
|
|
/* create midi ports */
|
|
err = snd_rawmidi_new(motu->card, motu->card->driver, 0, 1, 1, &rmidi);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
snprintf(rmidi->name, sizeof(rmidi->name),
|
|
"%s MIDI", motu->card->shortname);
|
|
rmidi->private_data = motu;
|
|
|
|
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT |
|
|
SNDRV_RAWMIDI_INFO_OUTPUT |
|
|
SNDRV_RAWMIDI_INFO_DUPLEX;
|
|
|
|
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
|
|
&capture_ops);
|
|
str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
|
|
set_midi_substream_names(motu, str);
|
|
|
|
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
|
|
&playback_ops);
|
|
str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
|
|
set_midi_substream_names(motu, str);
|
|
|
|
return 0;
|
|
}
|