2 * Linux driver for TerraTec DMX 6Fire USB
4 * Main routines and module definitions.
7 * Created: Jan 01, 2011
8 * Copyright: (C) Torsten Schenk
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
23 #include <linux/moduleparam.h>
24 #include <linux/interrupt.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/gfp.h>
28 #include <sound/initval.h>
31 MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver");
32 MODULE_LICENSE("GPL v2");
33 MODULE_SUPPORTED_DEVICE("{{TerraTec,DMX 6Fire USB}}");
35 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
36 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */
37 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */
38 static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
39 static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
41 module_param_array(index, int, NULL, 0444);
42 MODULE_PARM_DESC(index, "Index value for the 6fire sound device");
43 module_param_array(id, charp, NULL, 0444);
44 MODULE_PARM_DESC(id, "ID string for the 6fire sound device.");
45 module_param_array(enable, bool, NULL, 0444);
46 MODULE_PARM_DESC(enable, "Enable the 6fire sound device.");
48 static DEFINE_MUTEX(register_mutex);
50 static void usb6fire_chip_abort(struct sfire_chip *chip)
54 usb6fire_pcm_abort(chip);
56 usb6fire_midi_abort(chip);
58 usb6fire_comm_abort(chip);
60 usb6fire_control_abort(chip);
62 snd_card_disconnect(chip->card);
63 snd_card_free_when_closed(chip->card);
69 static void usb6fire_chip_destroy(struct sfire_chip *chip)
73 usb6fire_pcm_destroy(chip);
75 usb6fire_midi_destroy(chip);
77 usb6fire_comm_destroy(chip);
79 usb6fire_control_destroy(chip);
81 snd_card_free(chip->card);
85 static int usb6fire_chip_probe(struct usb_interface *intf,
86 const struct usb_device_id *usb_id)
90 struct sfire_chip *chip = NULL;
91 struct usb_device *device = interface_to_usbdev(intf);
92 int regidx = -1; /* index in module parameter array */
93 struct snd_card *card = NULL;
95 /* look if we already serve this card and return if so */
96 mutex_lock(®ister_mutex);
97 for (i = 0; i < SNDRV_CARDS; i++) {
98 if (devices[i] == device) {
100 chips[i]->intf_count++;
101 usb_set_intfdata(intf, chips[i]);
102 mutex_unlock(®ister_mutex);
104 } else if (!devices[i] && regidx < 0)
108 mutex_unlock(®ister_mutex);
109 dev_err(&intf->dev, "too many cards registered.\n");
112 devices[regidx] = device;
113 mutex_unlock(®ister_mutex);
115 /* check, if firmware is present on device, upload it if not */
116 ret = usb6fire_fw_init(intf);
119 else if (ret == FW_NOT_READY) /* firmware update performed */
122 /* if we are here, card can be registered in alsa. */
123 if (usb_set_interface(device, 0, 0) != 0) {
124 dev_err(&intf->dev, "can't set first interface.\n");
127 ret = snd_card_new(&intf->dev, index[regidx], id[regidx],
128 THIS_MODULE, sizeof(struct sfire_chip), &card);
130 dev_err(&intf->dev, "cannot create alsa card.\n");
133 strcpy(card->driver, "6FireUSB");
134 strcpy(card->shortname, "TerraTec DMX6FireUSB");
135 sprintf(card->longname, "%s at %d:%d", card->shortname,
136 device->bus->busnum, device->devnum);
138 chip = card->private_data;
139 chips[regidx] = chip;
141 chip->regidx = regidx;
142 chip->intf_count = 1;
145 ret = usb6fire_comm_init(chip);
149 ret = usb6fire_midi_init(chip);
153 ret = usb6fire_pcm_init(chip);
157 ret = usb6fire_control_init(chip);
161 ret = snd_card_register(card);
163 dev_err(&intf->dev, "cannot register card.");
166 usb_set_intfdata(intf, chip);
170 usb6fire_chip_destroy(chip);
174 static void usb6fire_chip_disconnect(struct usb_interface *intf)
176 struct sfire_chip *chip;
178 chip = usb_get_intfdata(intf);
179 if (chip) { /* if !chip, fw upload has been performed */
181 if (!chip->intf_count) {
182 mutex_lock(®ister_mutex);
183 devices[chip->regidx] = NULL;
184 chips[chip->regidx] = NULL;
185 mutex_unlock(®ister_mutex);
187 chip->shutdown = true;
188 usb6fire_chip_abort(chip);
189 usb6fire_chip_destroy(chip);
194 static const struct usb_device_id device_table[] = {
196 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
203 MODULE_DEVICE_TABLE(usb, device_table);
205 static struct usb_driver usb_driver = {
206 .name = "snd-usb-6fire",
207 .probe = usb6fire_chip_probe,
208 .disconnect = usb6fire_chip_disconnect,
209 .id_table = device_table,
212 module_usb_driver(usb_driver);