From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 sound/firewire/tascam/tascam-midi.c | 135 ++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 sound/firewire/tascam/tascam-midi.c

(limited to 'sound/firewire/tascam/tascam-midi.c')

diff --git a/sound/firewire/tascam/tascam-midi.c b/sound/firewire/tascam/tascam-midi.c
new file mode 100644
index 000000000..02eed2dce
--- /dev/null
+++ b/sound/firewire/tascam/tascam-midi.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * tascam-midi.c - a part of driver for TASCAM FireWire series
+ *
+ * Copyright (c) 2015 Takashi Sakamoto
+ */
+
+#include "tascam.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_tscm *tscm = substream->rmidi->private_data;
+
+	snd_fw_async_midi_port_init(&tscm->out_ports[substream->number]);
+
+	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)
+{
+	return 0;
+}
+
+static void midi_playback_drain(struct snd_rawmidi_substream *substream)
+{
+	struct snd_tscm *tscm = substream->rmidi->private_data;
+
+	snd_fw_async_midi_port_finish(&tscm->out_ports[substream->number]);
+}
+
+static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+	struct snd_tscm *tscm = substrm->rmidi->private_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&tscm->lock, flags);
+
+	if (up)
+		tscm->tx_midi_substreams[substrm->number] = substrm;
+	else
+		tscm->tx_midi_substreams[substrm->number] = NULL;
+
+	spin_unlock_irqrestore(&tscm->lock, flags);
+}
+
+static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+	struct snd_tscm *tscm = substrm->rmidi->private_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&tscm->lock, flags);
+
+	if (up)
+		snd_fw_async_midi_port_run(&tscm->out_ports[substrm->number],
+					   substrm);
+
+	spin_unlock_irqrestore(&tscm->lock, flags);
+}
+
+int snd_tscm_create_midi_devices(struct snd_tscm *tscm)
+{
+	static const struct snd_rawmidi_ops capture_ops = {
+		.open		= midi_capture_open,
+		.close		= midi_capture_close,
+		.trigger	= midi_capture_trigger,
+	};
+	static const struct snd_rawmidi_ops playback_ops = {
+		.open		= midi_playback_open,
+		.close		= midi_playback_close,
+		.drain		= midi_playback_drain,
+		.trigger	= midi_playback_trigger,
+	};
+	struct snd_rawmidi *rmidi;
+	struct snd_rawmidi_str *stream;
+	struct snd_rawmidi_substream *subs;
+	int err;
+
+	err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0,
+			      tscm->spec->midi_playback_ports,
+			      tscm->spec->midi_capture_ports,
+			      &rmidi);
+	if (err < 0)
+		return err;
+
+	snprintf(rmidi->name, sizeof(rmidi->name),
+		 "%s MIDI", tscm->card->shortname);
+	rmidi->private_data = tscm;
+
+	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
+	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+			    &capture_ops);
+	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
+
+	/* Set port names for MIDI input. */
+	list_for_each_entry(subs, &stream->substreams, list) {
+		/* TODO: support virtual MIDI ports. */
+		if (subs->number < tscm->spec->midi_capture_ports) {
+			/* Hardware MIDI ports. */
+			snprintf(subs->name, sizeof(subs->name),
+				 "%s MIDI %d",
+				 tscm->card->shortname, subs->number + 1);
+		}
+	}
+
+	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
+	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+			    &playback_ops);
+	stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
+
+	/* Set port names for MIDI ourput. */
+	list_for_each_entry(subs, &stream->substreams, list) {
+		if (subs->number < tscm->spec->midi_playback_ports) {
+			/* Hardware MIDI ports only. */
+			snprintf(subs->name, sizeof(subs->name),
+				 "%s MIDI %d",
+				 tscm->card->shortname, subs->number + 1);
+		}
+	}
+
+	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
+
+	return 0;
+}
-- 
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