281 lines
7.2 KiB
C
281 lines
7.2 KiB
C
/*
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* Linux driver for TerraTec DMX 6Fire USB
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*
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* Main routines and module definitions.
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*
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* Author: Torsten Schenk <torsten.schenk@zoho.com>
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* Created: Jan 01, 2011
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* Copyright: (C) Torsten Schenk
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include "chip.h"
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#include "firmware.h"
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#include "control.h"
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#include "comm.h"
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#include "midi.h"
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#include "substream.h"
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#include "urbs.h"
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#include "pcm.h"
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#include <linux/version.h>
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#include <linux/moduleparam.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/gfp.h>
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#include <sound/initval.h>
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MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>");
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MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver, version 0.6.1");
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MODULE_LICENSE("GPL v2");
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MODULE_SUPPORTED_DEVICE("{{TerraTec, DMX 6Fire USB}}");
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */
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static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */
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static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
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static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
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static int tasklet_thresh[SNDRV_CARDS] = { PCM_TASKLET_THRESH_DEFAULT };
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static int pcm_mode[SNDRV_CARDS] = { PCM_MODE_DEFAULT };
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for the 6fire sound device");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for the 6fire sound device.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable the 6fire sound device.");
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module_param_array(tasklet_thresh, int, NULL, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
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MODULE_PARM_DESC(tasklet_thresh, "Tasklet threshold (packets/urb, default = 128).");
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module_param_array(pcm_mode, int, NULL, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
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MODULE_PARM_DESC(pcm_mode, "PCM mode (default = 3).");
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static DEFINE_MUTEX(register_mutex);
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static void usb6fire_chip_abort(struct sfire_chip *chip)
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{
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if (chip) {
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if (chip->card)
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snd_card_disconnect(chip->card);
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if (chip->midi)
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usb6fire_midi_abort(chip);
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if (chip->comm)
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usb6fire_comm_abort(chip);
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if (chip->control)
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usb6fire_control_abort(chip);
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if (chip->pcm)
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usb6fire_pcm_abort(chip);
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if (chip->urbs)
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usb6fire_urbs_abort(chip);
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if (chip->substream)
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usb6fire_substream_abort(chip);
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if (chip->card) {
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snd_card_free_when_closed(chip->card);
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chip->card = NULL;
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}
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}
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}
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static void usb6fire_chip_destroy(struct sfire_chip *chip)
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{
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if (chip) {
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if (chip->midi)
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usb6fire_midi_destroy(chip);
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if (chip->comm)
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usb6fire_comm_destroy(chip);
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if (chip->control)
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usb6fire_control_destroy(chip);
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if (chip->pcm)
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usb6fire_pcm_destroy(chip);
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if (chip->urbs)
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usb6fire_urbs_destroy(chip);
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if (chip->substream)
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usb6fire_substream_destroy(chip);
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if (chip->card)
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snd_card_free(chip->card);
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}
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}
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static int usb6fire_chip_probe(struct usb_interface *intf,
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const struct usb_device_id *usb_id)
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{
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int ret;
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int i;
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struct sfire_chip *chip = NULL;
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struct usb_device *device = interface_to_usbdev(intf);
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int regidx = -1; /* index in module parameter array */
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struct snd_card *card = NULL;
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/* check, if firmware is present on device, upload it if not */
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ret = usb6fire_fw_init(intf);
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if (ret < 0)
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return ret;
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else if (ret == FW_NOT_READY) /* firmware update performed */
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return 0;
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/* look if we already serve this card and return if so */
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mutex_lock(®ister_mutex);
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for (i = 0; i < SNDRV_CARDS; i++) {
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if (devices[i] == device) {
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if (chips[i])
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chips[i]->intf_count++;
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usb_set_intfdata(intf, chips[i]);
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mutex_unlock(®ister_mutex);
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return 0;
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} else if (regidx < 0)
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regidx = i;
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}
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if (regidx < 0) {
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mutex_unlock(®ister_mutex);
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snd_printk(KERN_ERR PREFIX "too many cards registered.\n");
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return -ENODEV;
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}
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devices[regidx] = device;
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mutex_unlock(®ister_mutex);
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/* if we are here, card can be registered in alsa. */
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if (usb_set_interface(device, 0, 0) != 0) {
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snd_printk(KERN_ERR PREFIX "can't set first interface.\n");
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return -EIO;
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}
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 15, 0)
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ret = snd_card_new(&intf->dev, index[regidx], id[regidx],
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THIS_MODULE, sizeof(struct sfire_chip), &card);
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#else
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ret = snd_card_create(index[regidx], id[regidx],
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THIS_MODULE, sizeof(struct sfire_chip), &card);
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#endif
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if (ret < 0) {
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snd_printk(KERN_ERR PREFIX "cannot create alsa card.\n");
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return ret;
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}
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strcpy(card->driver, "6FireUSB");
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strcpy(card->shortname, "TerraTec DMX6FireUSB");
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sprintf(card->longname, "%s at %d:%d", card->shortname,
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device->bus->busnum, device->devnum);
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snd_card_set_dev(card, &intf->dev);
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chip = card->private_data;
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chips[regidx] = chip;
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chip->tasklet_thresh = tasklet_thresh[regidx];
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if (chip->tasklet_thresh < 0)
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chip->tasklet_thresh = PCM_TASKLET_THRESH_DEFAULT;
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chip->pcm_mode = pcm_mode[regidx];
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if (chip->pcm_mode < 0 || chip->pcm_mode >= PCM_MODES)
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chip->pcm_mode = PCM_MODE_DEFAULT;
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chip->dev = device;
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chip->regidx = regidx;
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chip->intf_count = 1;
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chip->card = card;
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ret = usb6fire_comm_init(chip);
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if (ret < 0) {
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usb6fire_chip_destroy(chip);
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return ret;
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}
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ret = usb6fire_midi_init(chip);
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if (ret < 0) {
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usb6fire_chip_destroy(chip);
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return ret;
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}
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ret = usb6fire_control_init(chip);
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if (ret < 0) {
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usb6fire_chip_destroy(chip);
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return ret;
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}
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if (chip->pcm_mode != PCM_MODE_OFF) {
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ret = usb6fire_substream_init(chip);
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if (ret < 0) {
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usb6fire_chip_destroy(chip);
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return ret;
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}
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ret = usb6fire_urbs_init(chip);
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if (ret < 0) {
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usb6fire_chip_destroy(chip);
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return ret;
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}
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ret = usb6fire_pcm_init(chip);
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if (ret < 0) {
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usb6fire_chip_destroy(chip);
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return ret;
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}
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}
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ret = snd_card_register(card);
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if (ret < 0) {
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snd_printk(KERN_ERR PREFIX "cannot register card.");
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usb6fire_chip_destroy(chip);
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return ret;
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}
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usb_set_intfdata(intf, chip);
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return 0;
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}
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static void usb6fire_chip_disconnect(struct usb_interface *intf)
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{
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struct sfire_chip *chip;
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struct snd_card *card;
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chip = usb_get_intfdata(intf);
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if (chip) { /* if !chip, fw upload has been performed */
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card = chip->card;
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chip->intf_count--;
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if (!chip->intf_count) {
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mutex_lock(®ister_mutex);
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devices[chip->regidx] = NULL;
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chips[chip->regidx] = NULL;
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mutex_unlock(®ister_mutex);
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chip->shutdown = true;
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usb6fire_chip_abort(chip);
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usb6fire_chip_destroy(chip);
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}
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}
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}
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static struct usb_device_id device_table[] = {
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{
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.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
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.idVendor = 0x0ccd,
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.idProduct = 0x0080
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},
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{}
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};
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MODULE_DEVICE_TABLE(usb, device_table);
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static struct usb_driver usb_driver = {
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.name = "snd-usb-6fire",
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.probe = usb6fire_chip_probe,
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.disconnect = usb6fire_chip_disconnect,
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.id_table = device_table,
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};
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0)
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module_usb_driver(usb_driver);
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#else
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static int __init usb6fire_chip_init(void)
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{
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return usb_register(&usb_driver);
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}
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static void __exit usb6fire_chip_cleanup(void)
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{
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usb_deregister(&usb_driver);
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}
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module_init(usb6fire_chip_init);
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module_exit(usb6fire_chip_cleanup);
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#endif
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