[linux-2.6-block.git] / sound / firewire / fireface / ff-midi.c

/*
 * ff-midi.c - a part of driver for RME Fireface series
 *
 * Copyright (c) 2015-2017 Takashi Sakamoto
 *
 * Licensed under the terms of the GNU General Public License, version 2.
 */

#include "ff.h"

static int midi_capture_open(struct snd_rawmidi_substream *substream)
{
	/* Do nothing. */
	return 0;
}

static int midi_playback_open(struct snd_rawmidi_substream *substream)
{
	struct snd_ff *ff = substream->rmidi->private_data;

	/* Initialize internal status. */
	ff->running_status[substream->number] = 0;
	ff->rx_midi_error[substream->number] = false;

	WRITE_ONCE(ff->rx_midi_substreams[substream->number], substream);

	return 0;
}

static int midi_capture_close(struct snd_rawmidi_substream *substream)
{
	/* Do nothing. */
	return 0;
}

static int midi_playback_close(struct snd_rawmidi_substream *substream)
{
	struct snd_ff *ff = substream->rmidi->private_data;

	cancel_work_sync(&ff->rx_midi_work[substream->number]);
	WRITE_ONCE(ff->rx_midi_substreams[substream->number], NULL);

	return 0;
}

static void midi_capture_trigger(struct snd_rawmidi_substream *substream,
				 int up)
{
	struct snd_ff *ff = substream->rmidi->private_data;
	unsigned long flags;

	spin_lock_irqsave(&ff->lock, flags);

	if (up)
		WRITE_ONCE(ff->tx_midi_substreams[substream->number],
			   substream);
	else
		WRITE_ONCE(ff->tx_midi_substreams[substream->number], NULL);

	spin_unlock_irqrestore(&ff->lock, flags);
}

static void midi_playback_trigger(struct snd_rawmidi_substream *substream,
				  int up)
{
	struct snd_ff *ff = substream->rmidi->private_data;
	unsigned long flags;

	spin_lock_irqsave(&ff->lock, flags);

	if (up || !ff->rx_midi_error[substream->number])
		schedule_work(&ff->rx_midi_work[substream->number]);

	spin_unlock_irqrestore(&ff->lock, flags);
}

static void set_midi_substream_names(struct snd_rawmidi_str *stream,
				     const char *const name)
{
	struct snd_rawmidi_substream *substream;

	list_for_each_entry(substream, &stream->substreams, list) {
		snprintf(substream->name, sizeof(substream->name),
			 "%s MIDI %d", name, substream->number + 1);
	}
}

int snd_ff_create_midi_devices(struct snd_ff *ff)
{
	static const struct snd_rawmidi_ops midi_capture_ops = {
		.open		= midi_capture_open,
		.close		= midi_capture_close,
		.trigger	= midi_capture_trigger,
	};
	static const struct snd_rawmidi_ops midi_playback_ops = {
		.open		= midi_playback_open,
		.close		= midi_playback_close,
		.trigger	= midi_playback_trigger,
	};
	struct snd_rawmidi *rmidi;
	struct snd_rawmidi_str *stream;
	int err;

	err = snd_rawmidi_new(ff->card, ff->card->driver, 0,
			      ff->spec->midi_out_ports, ff->spec->midi_in_ports,
			      &rmidi);
	if (err < 0)
		return err;

	snprintf(rmidi->name, sizeof(rmidi->name),
		 "%s MIDI", ff->card->shortname);
	rmidi->private_data = ff;

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
			    &midi_capture_ops);
	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
	set_midi_substream_names(stream, ff->card->shortname);

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
			    &midi_playback_ops);
	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
	set_midi_substream_names(stream, ff->card->shortname);

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;

	return 0;
}
Commit	Line	Data
ff2c293e TS	1	/*
	2	* ff-midi.c - a part of driver for RME Fireface series
	3	*
	4	* Copyright (c) 2015-2017 Takashi Sakamoto
	5	*
	6	* Licensed under the terms of the GNU General Public License, version 2.
	7	*/
	8
	9	#include "ff.h"
	10
	11	static int midi_capture_open(struct snd_rawmidi_substream *substream)
	12	{
	13	/* Do nothing. */
	14	return 0;
	15	}
	16
	17	static int midi_playback_open(struct snd_rawmidi_substream *substream)
	18	{
	19	struct snd_ff *ff = substream->rmidi->private_data;
	20
	21	/* Initialize internal status. */
	22	ff->running_status[substream->number] = 0;
	23	ff->rx_midi_error[substream->number] = false;
	24
6aa7de05	25	WRITE_ONCE(ff->rx_midi_substreams[substream->number], substream);
ff2c293e TS	26
	27	return 0;
	28	}
	29
	30	static int midi_capture_close(struct snd_rawmidi_substream *substream)
	31	{
	32	/* Do nothing. */
	33	return 0;
	34	}
	35
	36	static int midi_playback_close(struct snd_rawmidi_substream *substream)
	37	{
	38	struct snd_ff *ff = substream->rmidi->private_data;
	39
	40	cancel_work_sync(&ff->rx_midi_work[substream->number]);
6aa7de05	41	WRITE_ONCE(ff->rx_midi_substreams[substream->number], NULL);
ff2c293e TS	42
	43	return 0;
	44	}
	45
	46	static void midi_capture_trigger(struct snd_rawmidi_substream *substream,
	47	int up)
	48	{
	49	struct snd_ff *ff = substream->rmidi->private_data;
	50	unsigned long flags;
	51
	52	spin_lock_irqsave(&ff->lock, flags);
	53
	54	if (up)
6aa7de05 MR	55	WRITE_ONCE(ff->tx_midi_substreams[substream->number],
6aa7de05 MR	56	substream);
ff2c293e	57	else
6aa7de05	58	WRITE_ONCE(ff->tx_midi_substreams[substream->number], NULL);
ff2c293e TS	59
	60	spin_unlock_irqrestore(&ff->lock, flags);
	61	}
	62
	63	static void midi_playback_trigger(struct snd_rawmidi_substream *substream,
	64	int up)
	65	{
	66	struct snd_ff *ff = substream->rmidi->private_data;
	67	unsigned long flags;
	68
	69	spin_lock_irqsave(&ff->lock, flags);
	70
	71	if (up \|\| !ff->rx_midi_error[substream->number])
	72	schedule_work(&ff->rx_midi_work[substream->number]);
	73
	74	spin_unlock_irqrestore(&ff->lock, flags);
	75	}
	76
ff2c293e TS	77	static void set_midi_substream_names(struct snd_rawmidi_str *stream,
	78	const char *const name)
	79	{
	80	struct snd_rawmidi_substream *substream;
	81
	82	list_for_each_entry(substream, &stream->substreams, list) {
	83	snprintf(substream->name, sizeof(substream->name),
	84	"%s MIDI %d", name, substream->number + 1);
	85	}
	86	}
	87
	88	int snd_ff_create_midi_devices(struct snd_ff *ff)
	89	{
d2dc2a96 TS	90	static const struct snd_rawmidi_ops midi_capture_ops = {
	91	.open = midi_capture_open,
	92	.close = midi_capture_close,
	93	.trigger = midi_capture_trigger,
	94	};
	95	static const struct snd_rawmidi_ops midi_playback_ops = {
	96	.open = midi_playback_open,
	97	.close = midi_playback_close,
	98	.trigger = midi_playback_trigger,
	99	};
ff2c293e TS	100	struct snd_rawmidi *rmidi;
	101	struct snd_rawmidi_str *stream;
	102	int err;
	103
	104	err = snd_rawmidi_new(ff->card, ff->card->driver, 0,
	105	ff->spec->midi_out_ports, ff->spec->midi_in_ports,
	106	&rmidi);
	107	if (err < 0)
	108	return err;
	109
	110	snprintf(rmidi->name, sizeof(rmidi->name),
	111	"%s MIDI", ff->card->shortname);
	112	rmidi->private_data = ff;
	113
	114	rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_INPUT;
	115	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
	116	&midi_capture_ops);
	117	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
	118	set_midi_substream_names(stream, ff->card->shortname);
	119
	120	rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_OUTPUT;
	121	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
	122	&midi_playback_ops);
	123	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
	124	set_midi_substream_names(stream, ff->card->shortname);
	125
	126	rmidi->info_flags \|= SNDRV_RAWMIDI_INFO_DUPLEX;
	127
	128	return 0;
	129	}