ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/sound/usb/caiaq/midi.c b/marvell/linux/sound/usb/caiaq/midi.c
new file mode 100644
index 0000000..512fbb3
--- /dev/null
+++ b/marvell/linux/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;
+
+ strlcpy(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);
+}