Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 162 insertions, 0 deletions

diff --git a/sound/usb/caiaq/midi.c b/sound/usb/caiaq/midi.c
new file mode 100644
index 000000000..c656d0162
--- /dev/null
+++ b/sound/usb/caiaq/midi.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (c) 2006,2007 Daniel Mack
+*/
+
+#include <linux/device.h>
+#include <linux/usb.h>
+#include <linux/gfp.h>
+#include <sound/rawmidi.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "device.h"
+#include "midi.h"
+
+static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream)
+{
+	return 0;
+}
+
+static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream)
+{
+	return 0;
+}
+
+static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+	struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
+
+	if (!cdev)
+		return;
+
+	cdev->midi_receive_substream = up ? substream : NULL;
+}
+
+
+static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream)
+{
+	return 0;
+}
+
+static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream)
+{
+	struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
+	if (cdev->midi_out_active) {
+		usb_kill_urb(&cdev->midi_out_urb);
+		cdev->midi_out_active = 0;
+	}
+	return 0;
+}
+
+static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *cdev,
+				    struct snd_rawmidi_substream *substream)
+{
+	int len, ret;
+	struct device *dev = caiaqdev_to_dev(cdev);
+
+	cdev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
+	cdev->midi_out_buf[1] = 0; /* port */
+	len = snd_rawmidi_transmit(substream, cdev->midi_out_buf + 3,
+				   EP1_BUFSIZE - 3);
+
+	if (len <= 0)
+		return;
+
+	cdev->midi_out_buf[2] = len;
+	cdev->midi_out_urb.transfer_buffer_length = len+3;
+
+	ret = usb_submit_urb(&cdev->midi_out_urb, GFP_ATOMIC);
+	if (ret < 0)
+		dev_err(dev,
+			"snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed,"
+			"ret=%d, len=%d\n", substream, ret, len);
+	else
+		cdev->midi_out_active = 1;
+}
+
+static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+	struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
+
+	if (up) {
+		cdev->midi_out_substream = substream;
+		if (!cdev->midi_out_active)
+			snd_usb_caiaq_midi_send(cdev, substream);
+	} else {
+		cdev->midi_out_substream = NULL;
+	}
+}
+
+
+static const struct snd_rawmidi_ops snd_usb_caiaq_midi_output =
+{
+	.open =		snd_usb_caiaq_midi_output_open,
+	.close =	snd_usb_caiaq_midi_output_close,
+	.trigger =      snd_usb_caiaq_midi_output_trigger,
+};
+
+static const struct snd_rawmidi_ops snd_usb_caiaq_midi_input =
+{
+	.open =		snd_usb_caiaq_midi_input_open,
+	.close =	snd_usb_caiaq_midi_input_close,
+	.trigger =      snd_usb_caiaq_midi_input_trigger,
+};
+
+void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *cdev,
+				     int port, const char *buf, int len)
+{
+	if (!cdev->midi_receive_substream)
+		return;
+
+	snd_rawmidi_receive(cdev->midi_receive_substream, buf, len);
+}
+
+int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
+{
+	int ret;
+	struct snd_rawmidi *rmidi;
+
+	ret = snd_rawmidi_new(device->chip.card, device->product_name, 0,
+					device->spec.num_midi_out,
+					device->spec.num_midi_in,
+					&rmidi);
+
+	if (ret < 0)
+		return ret;
+
+	strscpy(rmidi->name, device->product_name, sizeof(rmidi->name));
+
+	rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX;
+	rmidi->private_data = device;
+
+	if (device->spec.num_midi_out > 0) {
+		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
+		snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+				    &snd_usb_caiaq_midi_output);
+	}
+
+	if (device->spec.num_midi_in > 0) {
+		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
+		snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+				    &snd_usb_caiaq_midi_input);
+	}
+
+	device->rmidi = rmidi;
+
+	return 0;
+}
+
+void snd_usb_caiaq_midi_output_done(struct urb* urb)
+{
+	struct snd_usb_caiaqdev *cdev = urb->context;
+
+	cdev->midi_out_active = 0;
+	if (urb->status != 0)
+		return;
+
+	if (!cdev->midi_out_substream)
+		return;
+
+	snd_usb_caiaq_midi_send(cdev, cdev->midi_out_substream);
+}