1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Linux driver for TerraTec DMX 6Fire USB 4 * 5 * Main routines and module definitions. 6 * 7 * Author: Torsten Schenk <torsten.schenk@zoho.com> 8 * Created: Jan 01, 2011 9 * Copyright: (C) Torsten Schenk 10 */ 11 12 #include "chip.h" 13 #include "firmware.h" 14 #include "pcm.h" 15 #include "control.h" 16 #include "comm.h" 17 #include "midi.h" 18 19 #include <linux/moduleparam.h> 20 #include <linux/interrupt.h> 21 #include <linux/module.h> 22 #include <linux/init.h> 23 #include <linux/gfp.h> 24 #include <sound/initval.h> 25 26 MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>"); 27 MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver"); 28 MODULE_LICENSE("GPL v2"); 29 MODULE_SUPPORTED_DEVICE("{{TerraTec,DMX 6Fire USB}}"); 30 31 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ 32 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */ 33 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */ 34 static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; 35 static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; 36 37 module_param_array(index, int, NULL, 0444); 38 MODULE_PARM_DESC(index, "Index value for the 6fire sound device"); 39 module_param_array(id, charp, NULL, 0444); 40 MODULE_PARM_DESC(id, "ID string for the 6fire sound device."); 41 module_param_array(enable, bool, NULL, 0444); 42 MODULE_PARM_DESC(enable, "Enable the 6fire sound device."); 43 44 static DEFINE_MUTEX(register_mutex); 45 46 static void usb6fire_chip_abort(struct sfire_chip *chip) 47 { 48 if (chip) { 49 if (chip->pcm) 50 usb6fire_pcm_abort(chip); 51 if (chip->midi) 52 usb6fire_midi_abort(chip); 53 if (chip->comm) 54 usb6fire_comm_abort(chip); 55 if (chip->control) 56 usb6fire_control_abort(chip); 57 if (chip->card) { 58 snd_card_disconnect(chip->card); 59 snd_card_free_when_closed(chip->card); 60 chip->card = NULL; 61 } 62 } 63 } 64 65 static void usb6fire_chip_destroy(struct sfire_chip *chip) 66 { 67 if (chip) { 68 if (chip->pcm) 69 usb6fire_pcm_destroy(chip); 70 if (chip->midi) 71 usb6fire_midi_destroy(chip); 72 if (chip->comm) 73 usb6fire_comm_destroy(chip); 74 if (chip->control) 75 usb6fire_control_destroy(chip); 76 if (chip->card) 77 snd_card_free(chip->card); 78 } 79 } 80 81 static int usb6fire_chip_probe(struct usb_interface *intf, 82 const struct usb_device_id *usb_id) 83 { 84 int ret; 85 int i; 86 struct sfire_chip *chip = NULL; 87 struct usb_device *device = interface_to_usbdev(intf); 88 int regidx = -1; /* index in module parameter array */ 89 struct snd_card *card = NULL; 90 91 /* look if we already serve this card and return if so */ 92 mutex_lock(®ister_mutex); 93 for (i = 0; i < SNDRV_CARDS; i++) { 94 if (devices[i] == device) { 95 if (chips[i]) 96 chips[i]->intf_count++; 97 usb_set_intfdata(intf, chips[i]); 98 mutex_unlock(®ister_mutex); 99 return 0; 100 } else if (!devices[i] && regidx < 0) 101 regidx = i; 102 } 103 if (regidx < 0) { 104 mutex_unlock(®ister_mutex); 105 dev_err(&intf->dev, "too many cards registered.\n"); 106 return -ENODEV; 107 } 108 devices[regidx] = device; 109 mutex_unlock(®ister_mutex); 110 111 /* check, if firmware is present on device, upload it if not */ 112 ret = usb6fire_fw_init(intf); 113 if (ret < 0) 114 return ret; 115 else if (ret == FW_NOT_READY) /* firmware update performed */ 116 return 0; 117 118 /* if we are here, card can be registered in alsa. */ 119 if (usb_set_interface(device, 0, 0) != 0) { 120 dev_err(&intf->dev, "can't set first interface.\n"); 121 return -EIO; 122 } 123 ret = snd_card_new(&intf->dev, index[regidx], id[regidx], 124 THIS_MODULE, sizeof(struct sfire_chip), &card); 125 if (ret < 0) { 126 dev_err(&intf->dev, "cannot create alsa card.\n"); 127 return ret; 128 } 129 strcpy(card->driver, "6FireUSB"); 130 strcpy(card->shortname, "TerraTec DMX6FireUSB"); 131 sprintf(card->longname, "%s at %d:%d", card->shortname, 132 device->bus->busnum, device->devnum); 133 134 chip = card->private_data; 135 chips[regidx] = chip; 136 chip->dev = device; 137 chip->regidx = regidx; 138 chip->intf_count = 1; 139 chip->card = card; 140 141 ret = usb6fire_comm_init(chip); 142 if (ret < 0) 143 goto destroy_chip; 144 145 ret = usb6fire_midi_init(chip); 146 if (ret < 0) 147 goto destroy_chip; 148 149 ret = usb6fire_pcm_init(chip); 150 if (ret < 0) 151 goto destroy_chip; 152 153 ret = usb6fire_control_init(chip); 154 if (ret < 0) 155 goto destroy_chip; 156 157 ret = snd_card_register(card); 158 if (ret < 0) { 159 dev_err(&intf->dev, "cannot register card."); 160 goto destroy_chip; 161 } 162 usb_set_intfdata(intf, chip); 163 return 0; 164 165 destroy_chip: 166 usb6fire_chip_destroy(chip); 167 return ret; 168 } 169 170 static void usb6fire_chip_disconnect(struct usb_interface *intf) 171 { 172 struct sfire_chip *chip; 173 174 chip = usb_get_intfdata(intf); 175 if (chip) { /* if !chip, fw upload has been performed */ 176 chip->intf_count--; 177 if (!chip->intf_count) { 178 mutex_lock(®ister_mutex); 179 devices[chip->regidx] = NULL; 180 chips[chip->regidx] = NULL; 181 mutex_unlock(®ister_mutex); 182 183 chip->shutdown = true; 184 usb6fire_chip_abort(chip); 185 usb6fire_chip_destroy(chip); 186 } 187 } 188 } 189 190 static const struct usb_device_id device_table[] = { 191 { 192 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 193 .idVendor = 0x0ccd, 194 .idProduct = 0x0080 195 }, 196 {} 197 }; 198 199 MODULE_DEVICE_TABLE(usb, device_table); 200 201 static struct usb_driver usb_driver = { 202 .name = "snd-usb-6fire", 203 .probe = usb6fire_chip_probe, 204 .disconnect = usb6fire_chip_disconnect, 205 .id_table = device_table, 206 }; 207 208 module_usb_driver(usb_driver); 209