forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
3.2 KiB
136 lines
3.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* motu-midi.h - a part of driver for MOTU FireWire series |
|
* |
|
* Copyright (c) 2015-2017 Takashi Sakamoto <[email protected]> |
|
*/ |
|
#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, 0, 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; |
|
}
|
|
|