2 * Linux driver for TerraTec DMX 6Fire USB
4 * Main routines and module definitions.
6 * Author: Torsten Schenk <torsten.schenk@zoho.com>
7 * Created: Jan 01, 2011
9 * Copyright: (C) Torsten Schenk
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
24 #include <linux/moduleparam.h>
25 #include <linux/interrupt.h>
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/gfp.h>
29 #include <sound/initval.h>
31 MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>");
32 MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver, version 0.3.0");
33 MODULE_LICENSE("GPL v2");
34 MODULE_SUPPORTED_DEVICE("{{TerraTec, DMX 6Fire USB}}");
36 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
37 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */
38 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */
39 static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
40 static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
42 module_param_array(index, int, NULL, 0444);
43 MODULE_PARM_DESC(index, "Index value for the 6fire sound device");
44 module_param_array(id, charp, NULL, 0444);
45 MODULE_PARM_DESC(id, "ID string for the 6fire sound device.");
46 module_param_array(enable, bool, NULL, 0444);
47 MODULE_PARM_DESC(enable, "Enable the 6fire sound device.");
49 static DEFINE_MUTEX(register_mutex);
51 static void usb6fire_chip_abort(struct sfire_chip *chip)
55 usb6fire_pcm_abort(chip);
57 usb6fire_midi_abort(chip);
59 usb6fire_comm_abort(chip);
61 usb6fire_control_abort(chip);
63 snd_card_disconnect(chip->card);
64 snd_card_free_when_closed(chip->card);
70 static void usb6fire_chip_destroy(struct sfire_chip *chip)
74 usb6fire_pcm_destroy(chip);
76 usb6fire_midi_destroy(chip);
78 usb6fire_comm_destroy(chip);
80 usb6fire_control_destroy(chip);
82 snd_card_free(chip->card);
86 static int __devinit usb6fire_chip_probe(struct usb_interface *intf,
87 const struct usb_device_id *usb_id)
91 struct sfire_chip *chip = NULL;
92 struct usb_device *device = interface_to_usbdev(intf);
93 int regidx = -1; /* index in module parameter array */
94 struct snd_card *card = NULL;
96 /* look if we already serve this card and return if so */
97 mutex_lock(®ister_mutex);
98 for (i = 0; i < SNDRV_CARDS; i++) {
99 if (devices[i] == device) {
101 chips[i]->intf_count++;
102 usb_set_intfdata(intf, chips[i]);
103 mutex_unlock(®ister_mutex);
105 } else if (regidx < 0)
109 mutex_unlock(®ister_mutex);
110 snd_printk(KERN_ERR PREFIX "too many cards registered.\n");
113 devices[regidx] = device;
114 mutex_unlock(®ister_mutex);
116 /* check, if firmware is present on device, upload it if not */
117 ret = usb6fire_fw_init(intf);
120 else if (ret == FW_NOT_READY) /* firmware update performed */
123 /* if we are here, card can be registered in alsa. */
124 if (usb_set_interface(device, 0, 0) != 0) {
125 snd_printk(KERN_ERR PREFIX "can't set first interface.\n");
128 ret = snd_card_create(index[regidx], id[regidx], THIS_MODULE,
129 sizeof(struct sfire_chip), &card);
131 snd_printk(KERN_ERR PREFIX "cannot create alsa card.\n");
134 strcpy(card->driver, "6FireUSB");
135 strcpy(card->shortname, "TerraTec DMX6FireUSB");
136 sprintf(card->longname, "%s at %d:%d", card->shortname,
137 device->bus->busnum, device->devnum);
138 snd_card_set_dev(card, &intf->dev);
140 chip = card->private_data;
141 chips[regidx] = chip;
143 chip->regidx = regidx;
144 chip->intf_count = 1;
147 ret = usb6fire_comm_init(chip);
149 usb6fire_chip_destroy(chip);
153 ret = usb6fire_midi_init(chip);
155 usb6fire_chip_destroy(chip);
159 ret = usb6fire_pcm_init(chip);
161 usb6fire_chip_destroy(chip);
165 ret = usb6fire_control_init(chip);
167 usb6fire_chip_destroy(chip);
171 ret = snd_card_register(card);
173 snd_printk(KERN_ERR PREFIX "cannot register card.");
174 usb6fire_chip_destroy(chip);
177 usb_set_intfdata(intf, chip);
181 static void usb6fire_chip_disconnect(struct usb_interface *intf)
183 struct sfire_chip *chip;
184 struct snd_card *card;
186 chip = usb_get_intfdata(intf);
187 if (chip) { /* if !chip, fw upload has been performed */
190 if (!chip->intf_count) {
191 mutex_lock(®ister_mutex);
192 devices[chip->regidx] = NULL;
193 chips[chip->regidx] = NULL;
194 mutex_unlock(®ister_mutex);
196 chip->shutdown = true;
197 usb6fire_chip_abort(chip);
198 usb6fire_chip_destroy(chip);
203 static struct usb_device_id device_table[] = {
205 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
212 MODULE_DEVICE_TABLE(usb, device_table);
214 static struct usb_driver driver = {
215 .name = "snd-usb-6fire",
216 .probe = usb6fire_chip_probe,
217 .disconnect = usb6fire_chip_disconnect,
218 .id_table = device_table,
221 static int __init usb6fire_chip_init(void)
223 return usb_register(&driver);
226 static void __exit usb6fire_chip_cleanup(void)
228 usb_deregister(&driver);
231 module_init(usb6fire_chip_init);
232 module_exit(usb6fire_chip_cleanup);