audio.c

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/*
 * Line6 Linux USB driver - 0.9.1beta
 *
 * Copyright (C) 2004-2010 Markus Grabner ([email protected])
 *
 *  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, version 2.
 *
 */

#include <sound/core.h>
#include <sound/initval.h>
#include <linux/export.h>

#include "driver.h"
#include "audio.h"

static int line6_index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *line6_id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;

/*
    Initialize the Line6 USB audio system.
*/
int line6_init_audio(struct usb_line6 *line6)
{
    static int dev;
    struct snd_card *card;
    int err;

    err = snd_card_create(line6_index[dev], line6_id[dev], THIS_MODULE, 0,
                  &card);
    if (err < 0)
        return err;

    line6->card = card;

    strcpy(card->id, line6->properties->id);
    strcpy(card->driver, DRIVER_NAME);
    strcpy(card->shortname, line6->properties->name);
    /* longname is 80 chars - see asound.h */
    sprintf(card->longname, "Line6 %s at USB %s", line6->properties->name,
        dev_name(line6->ifcdev));
    return 0;
}

/*
    Register the Line6 USB audio system.
*/
int line6_register_audio(struct usb_line6 *line6)
{
    int err;

    err = snd_card_register(line6->card);
    if (err < 0)
        return err;

    return 0;
}

/*
    Cleanup the Line6 USB audio system.
*/
void line6_cleanup_audio(struct usb_line6 *line6)
{
    struct snd_card *card = line6->card;

    if (card == NULL)
        return;

    snd_card_disconnect(card);
    snd_card_free(card);
    line6->card = NULL;
}