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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;
err = snd_dg00x_stream_lock_try(dg00x);
if (err < 0)
return err;
mutex_lock(&dg00x->mutex);
err = snd_dg00x_stream_reserve_duplex(dg00x, 0);
if (err >= 0) {
++dg00x->substreams_counter;
err = snd_dg00x_stream_start_duplex(dg00x);
if (err < 0)
--dg00x->substreams_counter;
}
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;
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 *substream,
int up)
{
struct snd_dg00x *dg00x = substream->rmidi->private_data;
unsigned int port;
unsigned long flags;
if (substream->rmidi->device == 0)
port = substream->number;
else
port = 2;
spin_lock_irqsave(&dg00x->lock, flags);
if (up)
amdtp_dot_midi_trigger(&dg00x->tx_stream, port, substream);
else
amdtp_dot_midi_trigger(&dg00x->tx_stream, port, NULL);
spin_unlock_irqrestore(&dg00x->lock, flags);
}
static void midi_playback_trigger(struct snd_rawmidi_substream *substream,
int up)
{
struct snd_dg00x *dg00x = substream->rmidi->private_data;
unsigned int port;
unsigned long flags;
if (substream->rmidi->device == 0)
port = substream->number;
else
port = 2;
spin_lock_irqsave(&dg00x->lock, flags);
if (up)
amdtp_dot_midi_trigger(&dg00x->rx_stream, port, substream);
else
amdtp_dot_midi_trigger(&dg00x->rx_stream, port, NULL);
spin_unlock_irqrestore(&dg00x->lock, flags);
}
static void set_substream_names(struct snd_dg00x *dg00x,
struct snd_rawmidi *rmidi, bool is_console)
{
struct snd_rawmidi_substream *subs;
struct snd_rawmidi_str *str;
int i;
for (i = 0; i < 2; ++i) {
str = &rmidi->streams[i];
list_for_each_entry(subs, &str->substreams, list) {
if (!is_console) {
snprintf(subs->name, sizeof(subs->name),
"%s MIDI %d",
dg00x->card->shortname,
subs->number + 1);
} else {
snprintf(subs->name, sizeof(subs->name),
"%s control",
dg00x->card->shortname);
}
}
}
}
static int add_substream_pair(struct snd_dg00x *dg00x, unsigned int out_ports,
unsigned int in_ports, bool is_console)
{
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,
};
const char *label;
struct snd_rawmidi *rmidi;
int err;
/* Add physical midi ports. */
err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, is_console,
out_ports, in_ports, &rmidi);
if (err < 0)
return err;
rmidi->private_data = dg00x;
if (!is_console)
label = "%s control";
else
label = "%s MIDI";
snprintf(rmidi->name, sizeof(rmidi->name), label,
dg00x->card->shortname);
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &playback_ops);
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &capture_ops);
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT |
SNDRV_RAWMIDI_INFO_OUTPUT |
SNDRV_RAWMIDI_INFO_DUPLEX;
set_substream_names(dg00x, rmidi, is_console);
return 0;
}
int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x)
{
int err;
/* Add physical midi ports. */
err = add_substream_pair(dg00x, DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS,
false);
if (err < 0)
return err;
if (dg00x->is_console)
err = add_substream_pair(dg00x, 1, 1, true);
return err;
}
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