diff options
Diffstat (limited to 'sound/usb/6fire/chip.c')
| -rw-r--r-- | sound/usb/6fire/chip.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/sound/usb/6fire/chip.c b/sound/usb/6fire/chip.c new file mode 100644 index 0000000..c7dca7b --- /dev/null +++ b/sound/usb/6fire/chip.c @@ -0,0 +1,232 @@ +/* + * Linux driver for TerraTec DMX 6Fire USB + * + * Main routines and module definitions. + * + * Author: Torsten Schenk <torsten.schenk@zoho.com> + * Created: Jan 01, 2011 + * Version: 0.3.0 + * 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, version 0.3.0"); +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 int 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 __devinit 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 (regidx < 0) + regidx = i; + } + if (regidx < 0) { + mutex_unlock(®ister_mutex); + snd_printk(KERN_ERR PREFIX "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) { + snd_printk(KERN_ERR PREFIX "can't set first interface.\n"); + return -EIO; + } + ret = snd_card_create(index[regidx], id[regidx], THIS_MODULE, + sizeof(struct sfire_chip), &card); + if (ret < 0) { + snd_printk(KERN_ERR PREFIX "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); + snd_card_set_dev(card, &intf->dev); + + 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) { + usb6fire_chip_destroy(chip); + return ret; + } + + ret = usb6fire_midi_init(chip); + if (ret < 0) { + usb6fire_chip_destroy(chip); + return ret; + } + + ret = usb6fire_pcm_init(chip); + if (ret < 0) { + usb6fire_chip_destroy(chip); + return ret; + } + + ret = usb6fire_control_init(chip); + if (ret < 0) { + usb6fire_chip_destroy(chip); + return ret; + } + + ret = snd_card_register(card); + if (ret < 0) { + snd_printk(KERN_ERR PREFIX "cannot register card."); + usb6fire_chip_destroy(chip); + return ret; + } + usb_set_intfdata(intf, chip); + return 0; +} + +static void usb6fire_chip_disconnect(struct usb_interface *intf) +{ + struct sfire_chip *chip; + struct snd_card *card; + + chip = usb_get_intfdata(intf); + if (chip) { /* if !chip, fw upload has been performed */ + card = chip->card; + 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 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 driver = { + .name = "snd-usb-6fire", + .probe = usb6fire_chip_probe, + .disconnect = usb6fire_chip_disconnect, + .id_table = device_table, +}; + +static int __init usb6fire_chip_init(void) +{ + return usb_register(&driver); +} + +static void __exit usb6fire_chip_cleanup(void) +{ + usb_deregister(&driver); +} + +module_init(usb6fire_chip_init); +module_exit(usb6fire_chip_cleanup); |