v4.19.13 snapshot.
diff --git a/sound/usb/6fire/chip.c b/sound/usb/6fire/chip.c
new file mode 100644
index 0000000..17d5e3e
--- /dev/null
+++ b/sound/usb/6fire/chip.c
@@ -0,0 +1,212 @@
+/*
+ * Linux driver for TerraTec DMX 6Fire USB
+ *
+ * Main routines and module definitions.
+ *
+ * Author: Torsten Schenk <torsten.schenk@zoho.com>
+ * Created: Jan 01, 2011
+ * Copyright: (C) Torsten Schenk
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "chip.h"
+#include "firmware.h"
+#include "pcm.h"
+#include "control.h"
+#include "comm.h"
+#include "midi.h"
+
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/gfp.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>");
+MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver");
+MODULE_LICENSE("GPL v2");
+MODULE_SUPPORTED_DEVICE("{{TerraTec,DMX 6Fire USB}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */
+static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for the 6fire sound device");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for the 6fire sound device.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable the 6fire sound device.");
+
+static DEFINE_MUTEX(register_mutex);
+
+static void usb6fire_chip_abort(struct sfire_chip *chip)
+{
+ if (chip) {
+ if (chip->pcm)
+ usb6fire_pcm_abort(chip);
+ if (chip->midi)
+ usb6fire_midi_abort(chip);
+ if (chip->comm)
+ usb6fire_comm_abort(chip);
+ if (chip->control)
+ usb6fire_control_abort(chip);
+ if (chip->card) {
+ snd_card_disconnect(chip->card);
+ snd_card_free_when_closed(chip->card);
+ chip->card = NULL;
+ }
+ }
+}
+
+static void usb6fire_chip_destroy(struct sfire_chip *chip)
+{
+ if (chip) {
+ if (chip->pcm)
+ usb6fire_pcm_destroy(chip);
+ if (chip->midi)
+ usb6fire_midi_destroy(chip);
+ if (chip->comm)
+ usb6fire_comm_destroy(chip);
+ if (chip->control)
+ usb6fire_control_destroy(chip);
+ if (chip->card)
+ snd_card_free(chip->card);
+ }
+}
+
+static int usb6fire_chip_probe(struct usb_interface *intf,
+ const struct usb_device_id *usb_id)
+{
+ int ret;
+ int i;
+ struct sfire_chip *chip = NULL;
+ struct usb_device *device = interface_to_usbdev(intf);
+ int regidx = -1; /* index in module parameter array */
+ struct snd_card *card = NULL;
+
+ /* look if we already serve this card and return if so */
+ mutex_lock(®ister_mutex);
+ for (i = 0; i < SNDRV_CARDS; i++) {
+ if (devices[i] == device) {
+ if (chips[i])
+ chips[i]->intf_count++;
+ usb_set_intfdata(intf, chips[i]);
+ mutex_unlock(®ister_mutex);
+ return 0;
+ } else if (!devices[i] && regidx < 0)
+ regidx = i;
+ }
+ if (regidx < 0) {
+ mutex_unlock(®ister_mutex);
+ dev_err(&intf->dev, "too many cards registered.\n");
+ return -ENODEV;
+ }
+ devices[regidx] = device;
+ mutex_unlock(®ister_mutex);
+
+ /* check, if firmware is present on device, upload it if not */
+ ret = usb6fire_fw_init(intf);
+ if (ret < 0)
+ return ret;
+ else if (ret == FW_NOT_READY) /* firmware update performed */
+ return 0;
+
+ /* if we are here, card can be registered in alsa. */
+ if (usb_set_interface(device, 0, 0) != 0) {
+ dev_err(&intf->dev, "can't set first interface.\n");
+ return -EIO;
+ }
+ ret = snd_card_new(&intf->dev, index[regidx], id[regidx],
+ THIS_MODULE, sizeof(struct sfire_chip), &card);
+ if (ret < 0) {
+ dev_err(&intf->dev, "cannot create alsa card.\n");
+ return ret;
+ }
+ strcpy(card->driver, "6FireUSB");
+ strcpy(card->shortname, "TerraTec DMX6FireUSB");
+ sprintf(card->longname, "%s at %d:%d", card->shortname,
+ device->bus->busnum, device->devnum);
+
+ chip = card->private_data;
+ chips[regidx] = chip;
+ chip->dev = device;
+ chip->regidx = regidx;
+ chip->intf_count = 1;
+ chip->card = card;
+
+ ret = usb6fire_comm_init(chip);
+ if (ret < 0)
+ goto destroy_chip;
+
+ ret = usb6fire_midi_init(chip);
+ if (ret < 0)
+ goto destroy_chip;
+
+ ret = usb6fire_pcm_init(chip);
+ if (ret < 0)
+ goto destroy_chip;
+
+ ret = usb6fire_control_init(chip);
+ if (ret < 0)
+ goto destroy_chip;
+
+ ret = snd_card_register(card);
+ if (ret < 0) {
+ dev_err(&intf->dev, "cannot register card.");
+ goto destroy_chip;
+ }
+ usb_set_intfdata(intf, chip);
+ return 0;
+
+destroy_chip:
+ usb6fire_chip_destroy(chip);
+ return ret;
+}
+
+static void usb6fire_chip_disconnect(struct usb_interface *intf)
+{
+ struct sfire_chip *chip;
+
+ chip = usb_get_intfdata(intf);
+ if (chip) { /* if !chip, fw upload has been performed */
+ chip->intf_count--;
+ if (!chip->intf_count) {
+ mutex_lock(®ister_mutex);
+ devices[chip->regidx] = NULL;
+ chips[chip->regidx] = NULL;
+ mutex_unlock(®ister_mutex);
+
+ chip->shutdown = true;
+ usb6fire_chip_abort(chip);
+ usb6fire_chip_destroy(chip);
+ }
+ }
+}
+
+static const struct usb_device_id device_table[] = {
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x0ccd,
+ .idProduct = 0x0080
+ },
+ {}
+};
+
+MODULE_DEVICE_TABLE(usb, device_table);
+
+static struct usb_driver usb_driver = {
+ .name = "snd-usb-6fire",
+ .probe = usb6fire_chip_probe,
+ .disconnect = usb6fire_chip_disconnect,
+ .id_table = device_table,
+};
+
+module_usb_driver(usb_driver);