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/*
* fireworks_midi.c - a part of driver for Fireworks based devices
*
* Copyright (c) 2009-2010 Clemens Ladisch
* Copyright (c) 2013-2014 Takashi Sakamoto
*
* Licensed under the terms of the GNU General Public License, version 2.
*/
#include "fireworks.h"
static int midi_open(struct snd_rawmidi_substream *substream)
{
struct snd_efw *efw = substream->rmidi->private_data;
int err;
err = snd_efw_stream_lock_try(efw);
if (err < 0)
goto end;
mutex_lock(&efw->mutex);
err = snd_efw_stream_reserve_duplex(efw, 0);
if (err >= 0) {
++efw->substreams_counter;
err = snd_efw_stream_start_duplex(efw);
if (err < 0)
--efw->substreams_counter;
}
mutex_unlock(&efw->mutex);
if (err < 0)
snd_efw_stream_lock_release(efw);
end:
return err;
}
static int midi_close(struct snd_rawmidi_substream *substream)
{
struct snd_efw *efw = substream->rmidi->private_data;
mutex_lock(&efw->mutex);
--efw->substreams_counter;
snd_efw_stream_stop_duplex(efw);
mutex_unlock(&efw->mutex);
snd_efw_stream_lock_release(efw);
return 0;
}
static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
{
struct snd_efw *efw = substrm->rmidi->private_data;
unsigned long flags;
spin_lock_irqsave(&efw->lock, flags);
if (up)
amdtp_am824_midi_trigger(&efw->tx_stream,
substrm->number, substrm);
else
amdtp_am824_midi_trigger(&efw->tx_stream,
substrm->number, NULL);
spin_unlock_irqrestore(&efw->lock, flags);
}
static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
{
struct snd_efw *efw = substrm->rmidi->private_data;
unsigned long flags;
spin_lock_irqsave(&efw->lock, flags);
if (up)
amdtp_am824_midi_trigger(&efw->rx_stream,
substrm->number, substrm);
else
amdtp_am824_midi_trigger(&efw->rx_stream,
substrm->number, NULL);
spin_unlock_irqrestore(&efw->lock, flags);
}
static void set_midi_substream_names(struct snd_efw *efw,
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", efw->card->shortname, subs->number + 1);
}
}
int snd_efw_create_midi_devices(struct snd_efw *efw)
{
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(efw->card, efw->card->driver, 0,
efw->midi_out_ports, efw->midi_in_ports,
&rmidi);
if (err < 0)
return err;
snprintf(rmidi->name, sizeof(rmidi->name),
"%s MIDI", efw->card->shortname);
rmidi->private_data = efw;
if (efw->midi_in_ports > 0) {
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
&capture_ops);
str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
set_midi_substream_names(efw, str);
}
if (efw->midi_out_ports > 0) {
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
&playback_ops);
str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
set_midi_substream_names(efw, str);
}
if ((efw->midi_out_ports > 0) && (efw->midi_in_ports > 0))
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
return 0;
}
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