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/*
* digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family
*
* Copyright (c) 2014-2015 Takashi Sakamoto
*
* Licensed under the terms of the GNU General Public License, version 2.
*/
#include "digi00x.h"
static int midi_open(struct snd_rawmidi_substream *substream)
{
struct snd_dg00x *dg00x = substream->rmidi->private_data;
int err;
/* This port is for asynchronous transaction. */
if (substream->number == 0)
return 0;
err = snd_dg00x_stream_lock_try(dg00x);
if (err < 0)
return err;
mutex_lock(&dg00x->mutex);
dg00x->substreams_counter++;
err = snd_dg00x_stream_start_duplex(dg00x, 0);
mutex_unlock(&dg00x->mutex);
if (err < 0)
snd_dg00x_stream_lock_release(dg00x);
return err;
}
static int midi_close(struct snd_rawmidi_substream *substream)
{
struct snd_dg00x *dg00x = substream->rmidi->private_data;
/* This port is for asynchronous transaction. */
if (substream->number == 0)
return 0;
mutex_lock(&dg00x->mutex);
dg00x->substreams_counter--;
snd_dg00x_stream_stop_duplex(dg00x);
mutex_unlock(&dg00x->mutex);
snd_dg00x_stream_lock_release(dg00x);
return 0;
}
static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
{
struct snd_dg00x *dg00x = substrm->rmidi->private_data;
unsigned long flags;
spin_lock_irqsave(&dg00x->lock, flags);
/* This port is for asynchronous transaction. */
if (substrm->number == 0) {
if (up)
dg00x->in_control = substrm;
else
dg00x->in_control = NULL;
} else {
if (up)
amdtp_dot_midi_trigger(&dg00x->tx_stream,
substrm->number - 1, substrm);
else
amdtp_dot_midi_trigger(&dg00x->tx_stream,
substrm->number - 1, NULL);
}
spin_unlock_irqrestore(&dg00x->lock, flags);
}
static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
{
struct snd_dg00x *dg00x = substrm->rmidi->private_data;
unsigned long flags;
spin_lock_irqsave(&dg00x->lock, flags);
/* This port is for asynchronous transaction. */
if (substrm->number == 0) {
if (up)
snd_fw_async_midi_port_run(&dg00x->out_control,
substrm);
} else {
if (up)
amdtp_dot_midi_trigger(&dg00x->rx_stream,
substrm->number - 1, substrm);
else
amdtp_dot_midi_trigger(&dg00x->rx_stream,
substrm->number - 1, NULL);
}
spin_unlock_irqrestore(&dg00x->lock, flags);
}
static struct snd_rawmidi_ops midi_capture_ops = {
.open = midi_open,
.close = midi_close,
.trigger = midi_capture_trigger,
};
static struct snd_rawmidi_ops midi_playback_ops = {
.open = midi_open,
.close = midi_close,
.trigger = midi_playback_trigger,
};
static void set_midi_substream_names(struct snd_dg00x *dg00x,
struct snd_rawmidi_str *str)
{
struct snd_rawmidi_substream *subs;
list_for_each_entry(subs, &str->substreams, list) {
if (subs->number > 0)
snprintf(subs->name, sizeof(subs->name),
"%s MIDI %d",
dg00x->card->shortname, subs->number);
else
/* This port is for asynchronous transaction. */
snprintf(subs->name, sizeof(subs->name),
"%s control",
dg00x->card->shortname);
}
}
int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x)
{
struct snd_rawmidi *rmidi;
struct snd_rawmidi_str *str;
int err;
err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, 0,
DOT_MIDI_OUT_PORTS + 1, DOT_MIDI_IN_PORTS + 1, &rmidi);
if (err < 0)
return err;
snprintf(rmidi->name, sizeof(rmidi->name),
"%s MIDI", dg00x->card->shortname);
rmidi->private_data = dg00x;
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
&midi_capture_ops);
str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
set_midi_substream_names(dg00x, str);
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
&midi_playback_ops);
str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
set_midi_substream_names(dg00x, str);
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
return 0;
}
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