1 /* 2 * Linux driver for TerraTec DMX 6Fire USB 3 * 4 * Main routines and module definitions. 5 * 6 * Author: Torsten Schenk <torsten.schenk@zoho.com> 7 * Created: Jan 01, 2011 8 * Copyright: (C) Torsten Schenk 9 * 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. 14 */ 15 16 #include "chip.h" 17 #include "firmware.h" 18 #include "pcm.h" 19 #include "control.h" 20 #include "comm.h" 21 #include "midi.h" 22 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> 29 30 MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>"); 31 MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver"); 32 MODULE_LICENSE("GPL v2"); 33 MODULE_SUPPORTED_DEVICE("{{TerraTec,DMX 6Fire USB}}"); 34 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; 40 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."); 47 48 static DEFINE_MUTEX(register_mutex); 49 50 static void usb6fire_chip_abort(struct sfire_chip *chip) 51 { 52 if (chip) { 53 if (chip->pcm) 54 usb6fire_pcm_abort(chip); 55 if (chip->midi) 56 usb6fire_midi_abort(chip); 57 if (chip->comm) 58 usb6fire_comm_abort(chip); 59 if (chip->control) 60 usb6fire_control_abort(chip); 61 if (chip->card) { 62 snd_card_disconnect(chip->card); 63 snd_card_free_when_closed(chip->card); 64 chip->card = NULL; 65 } 66 } 67 } 68 69 static void usb6fire_chip_destroy(struct sfire_chip *chip) 70 { 71 if (chip) { 72 if (chip->pcm) 73 usb6fire_pcm_destroy(chip); 74 if (chip->midi) 75 usb6fire_midi_destroy(chip); 76 if (chip->comm) 77 usb6fire_comm_destroy(chip); 78 if (chip->control) 79 usb6fire_control_destroy(chip); 80 if (chip->card) 81 snd_card_free(chip->card); 82 } 83 } 84 85 static int usb6fire_chip_probe(struct usb_interface *intf, 86 const struct usb_device_id *usb_id) 87 { 88 int ret; 89 int i; 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; 94 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) { 99 if (chips[i]) 100 chips[i]->intf_count++; 101 usb_set_intfdata(intf, chips[i]); 102 mutex_unlock(®ister_mutex); 103 return 0; 104 } else if (!devices[i] && regidx < 0) 105 regidx = i; 106 } 107 if (regidx < 0) { 108 mutex_unlock(®ister_mutex); 109 dev_err(&intf->dev, "too many cards registered.\n"); 110 return -ENODEV; 111 } 112 devices[regidx] = device; 113 mutex_unlock(®ister_mutex); 114 115 /* check, if firmware is present on device, upload it if not */ 116 ret = usb6fire_fw_init(intf); 117 if (ret < 0) 118 return ret; 119 else if (ret == FW_NOT_READY) /* firmware update performed */ 120 return 0; 121 122 /* 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"); 125 return -EIO; 126 } 127 ret = snd_card_new(&intf->dev, index[regidx], id[regidx], 128 THIS_MODULE, sizeof(struct sfire_chip), &card); 129 if (ret < 0) { 130 dev_err(&intf->dev, "cannot create alsa card.\n"); 131 return ret; 132 } 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); 137 138 chip = card->private_data; 139 chips[regidx] = chip; 140 chip->dev = device; 141 chip->regidx = regidx; 142 chip->intf_count = 1; 143 chip->card = card; 144 145 ret = usb6fire_comm_init(chip); 146 if (ret < 0) 147 goto destroy_chip; 148 149 ret = usb6fire_midi_init(chip); 150 if (ret < 0) 151 goto destroy_chip; 152 153 ret = usb6fire_pcm_init(chip); 154 if (ret < 0) 155 goto destroy_chip; 156 157 ret = usb6fire_control_init(chip); 158 if (ret < 0) 159 goto destroy_chip; 160 161 ret = snd_card_register(card); 162 if (ret < 0) { 163 dev_err(&intf->dev, "cannot register card."); 164 goto destroy_chip; 165 } 166 usb_set_intfdata(intf, chip); 167 return 0; 168 169 destroy_chip: 170 usb6fire_chip_destroy(chip); 171 return ret; 172 } 173 174 static void usb6fire_chip_disconnect(struct usb_interface *intf) 175 { 176 struct sfire_chip *chip; 177 struct snd_card *card; 178 179 chip = usb_get_intfdata(intf); 180 if (chip) { /* if !chip, fw upload has been performed */ 181 card = chip->card; 182 chip->intf_count--; 183 if (!chip->intf_count) { 184 mutex_lock(®ister_mutex); 185 devices[chip->regidx] = NULL; 186 chips[chip->regidx] = NULL; 187 mutex_unlock(®ister_mutex); 188 189 chip->shutdown = true; 190 usb6fire_chip_abort(chip); 191 usb6fire_chip_destroy(chip); 192 } 193 } 194 } 195 196 static const struct usb_device_id device_table[] = { 197 { 198 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 199 .idVendor = 0x0ccd, 200 .idProduct = 0x0080 201 }, 202 {} 203 }; 204 205 MODULE_DEVICE_TABLE(usb, device_table); 206 207 static struct usb_driver usb_driver = { 208 .name = "snd-usb-6fire", 209 .probe = usb6fire_chip_probe, 210 .disconnect = usb6fire_chip_disconnect, 211 .id_table = device_table, 212 }; 213 214 module_usb_driver(usb_driver); 215