linux-stable/sound/usb/6fire/chip.c
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00

208 lines
5.1 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Linux driver for TerraTec DMX 6Fire USB
*
* Main routines and module definitions.
*
* Author: Torsten Schenk <torsten.schenk@zoho.com>
* Created: Jan 01, 2011
* Copyright: (C) Torsten Schenk
*/
#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");
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 bool 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 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(&register_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(&register_mutex);
return 0;
} else if (!devices[i] && regidx < 0)
regidx = i;
}
if (regidx < 0) {
mutex_unlock(&register_mutex);
dev_err(&intf->dev, "too many cards registered.\n");
return -ENODEV;
}
devices[regidx] = device;
mutex_unlock(&register_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) {
dev_err(&intf->dev, "can't set first interface.\n");
return -EIO;
}
ret = snd_card_new(&intf->dev, index[regidx], id[regidx],
THIS_MODULE, sizeof(struct sfire_chip), &card);
if (ret < 0) {
dev_err(&intf->dev, "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);
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)
goto destroy_chip;
ret = usb6fire_midi_init(chip);
if (ret < 0)
goto destroy_chip;
ret = usb6fire_pcm_init(chip);
if (ret < 0)
goto destroy_chip;
ret = usb6fire_control_init(chip);
if (ret < 0)
goto destroy_chip;
ret = snd_card_register(card);
if (ret < 0) {
dev_err(&intf->dev, "cannot register card.");
goto destroy_chip;
}
usb_set_intfdata(intf, chip);
return 0;
destroy_chip:
usb6fire_chip_destroy(chip);
return ret;
}
static void usb6fire_chip_disconnect(struct usb_interface *intf)
{
struct sfire_chip *chip;
chip = usb_get_intfdata(intf);
if (chip) { /* if !chip, fw upload has been performed */
chip->intf_count--;
if (!chip->intf_count) {
mutex_lock(&register_mutex);
devices[chip->regidx] = NULL;
chips[chip->regidx] = NULL;
mutex_unlock(&register_mutex);
chip->shutdown = true;
usb6fire_chip_abort(chip);
usb6fire_chip_destroy(chip);
}
}
}
static const 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 usb_driver = {
.name = "snd-usb-6fire",
.probe = usb6fire_chip_probe,
.disconnect = usb6fire_chip_disconnect,
.id_table = device_table,
};
module_usb_driver(usb_driver);