[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / 6fire / chip.c

/*
 * 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 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 __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(&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 (regidx < 0)
			regidx = i;
	}
	if (regidx < 0) {
		mutex_unlock(&register_mutex);
		snd_printk(KERN_ERR PREFIX "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) {
		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(&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 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);
Commit	Line	Data
c6d43ba8 TS	1	/*
	2	* Linux driver for TerraTec DMX 6Fire USB
	3	*
	4	* Main routines and module definitions.
	5	*
	6	* Author: Torsten Schenk <torsten.schenk@zoho.com>
	7	* Created: Jan 01, 2011
	8	* Version: 0.3.0
	9	* Copyright: (C) Torsten Schenk
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2 of the License, or
	14	* (at your option) any later version.
	15	*/
	16
	17	#include "chip.h"
	18	#include "firmware.h"
	19	#include "pcm.h"
	20	#include "control.h"
	21	#include "comm.h"
	22	#include "midi.h"
	23
	24	#include <linux/moduleparam.h>
	25	#include <linux/interrupt.h>
	26	#include <linux/module.h>
	27	#include <linux/init.h>
	28	#include <linux/gfp.h>
	29	#include <sound/initval.h>
	30
	31	MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>");
	32	MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver, version 0.3.0");
	33	MODULE_LICENSE("GPL v2");
	34	MODULE_SUPPORTED_DEVICE("{{TerraTec, DMX 6Fire USB}}");
	35
	36	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
	37	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / Id for card */
a67ff6a5	38	static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */
c6d43ba8 TS	39	static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
	40	static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
	41
	42	module_param_array(index, int, NULL, 0444);
	43	MODULE_PARM_DESC(index, "Index value for the 6fire sound device");
	44	module_param_array(id, charp, NULL, 0444);
	45	MODULE_PARM_DESC(id, "ID string for the 6fire sound device.");
	46	module_param_array(enable, bool, NULL, 0444);
	47	MODULE_PARM_DESC(enable, "Enable the 6fire sound device.");
	48
	49	static DEFINE_MUTEX(register_mutex);
	50
	51	static void usb6fire_chip_abort(struct sfire_chip *chip)
	52	{
	53	if (chip) {
	54	if (chip->pcm)
	55	usb6fire_pcm_abort(chip);
	56	if (chip->midi)
	57	usb6fire_midi_abort(chip);
	58	if (chip->comm)
	59	usb6fire_comm_abort(chip);
	60	if (chip->control)
	61	usb6fire_control_abort(chip);
	62	if (chip->card) {
	63	snd_card_disconnect(chip->card);
	64	snd_card_free_when_closed(chip->card);
	65	chip->card = NULL;
	66	}
	67	}
	68	}
	69
	70	static void usb6fire_chip_destroy(struct sfire_chip *chip)
	71	{
	72	if (chip) {
	73	if (chip->pcm)
	74	usb6fire_pcm_destroy(chip);
	75	if (chip->midi)
	76	usb6fire_midi_destroy(chip);
	77	if (chip->comm)
	78	usb6fire_comm_destroy(chip);
	79	if (chip->control)
	80	usb6fire_control_destroy(chip);
	81	if (chip->card)
	82	snd_card_free(chip->card);
	83	}
	84	}
	85
	86	static int __devinit usb6fire_chip_probe(struct usb_interface *intf,
	87	const struct usb_device_id *usb_id)
	88	{
	89	int ret;
	90	int i;
	91	struct sfire_chip *chip = NULL;
	92	struct usb_device *device = interface_to_usbdev(intf);
	93	int regidx = -1; /* index in module parameter array */
	94	struct snd_card *card = NULL;
	95
	96	/* look if we already serve this card and return if so */
	97	mutex_lock(&register_mutex);
	98	for (i = 0; i < SNDRV_CARDS; i++) {
	99	if (devices[i] == device) {
	100	if (chips[i])
	101	chips[i]->intf_count++;
	102	usb_set_intfdata(intf, chips[i]);
103	mutex_unlock(&register_mutex);
104	return 0;
105	} else if (regidx < 0)
106	regidx = i;
107	}
108	if (regidx < 0) {
109	mutex_unlock(&register_mutex);
110	snd_printk(KERN_ERR PREFIX "too many cards registered.\n");
111	return -ENODEV;
112	}
113	devices[regidx] = device;
114	mutex_unlock(&register_mutex);
115
116	/* check, if firmware is present on device, upload it if not */
117	ret = usb6fire_fw_init(intf);
118	if (ret < 0)
119	return ret;
120	else if (ret == FW_NOT_READY) /* firmware update performed */
121	return 0;
122
123	/* if we are here, card can be registered in alsa. */
124	if (usb_set_interface(device, 0, 0) != 0) {
125	snd_printk(KERN_ERR PREFIX "can't set first interface.\n");
126	return -EIO;
127	}
128	ret = snd_card_create(index[regidx], id[regidx], THIS_MODULE,
129	sizeof(struct sfire_chip), &card);
130	if (ret < 0) {
131	snd_printk(KERN_ERR PREFIX "cannot create alsa card.\n");
132	return ret;
133	}
134	strcpy(card->driver, "6FireUSB");
135	strcpy(card->shortname, "TerraTec DMX6FireUSB");
136	sprintf(card->longname, "%s at %d:%d", card->shortname,
137	device->bus->busnum, device->devnum);
138	snd_card_set_dev(card, &intf->dev);
139
140	chip = card->private_data;
141	chips[regidx] = chip;
142	chip->dev = device;
143	chip->regidx = regidx;
144	chip->intf_count = 1;
145	chip->card = card;
146
147	ret = usb6fire_comm_init(chip);
148	if (ret < 0) {
149	usb6fire_chip_destroy(chip);
150	return ret;
151	}
152
153	ret = usb6fire_midi_init(chip);
154	if (ret < 0) {
155	usb6fire_chip_destroy(chip);
156	return ret;
157	}
158
159	ret = usb6fire_pcm_init(chip);
160	if (ret < 0) {
161	usb6fire_chip_destroy(chip);
162	return ret;
163	}
164
165	ret = usb6fire_control_init(chip);
166	if (ret < 0) {
167	usb6fire_chip_destroy(chip);
168	return ret;
169	}
170
171	ret = snd_card_register(card);
172	if (ret < 0) {
173	snd_printk(KERN_ERR PREFIX "cannot register card.");
174	usb6fire_chip_destroy(chip);
175	return ret;
176	}
177	usb_set_intfdata(intf, chip);
178	return 0;
179	}
180
181	static void usb6fire_chip_disconnect(struct usb_interface *intf)
182	{
183	struct sfire_chip *chip;
184	struct snd_card *card;
185
186	chip = usb_get_intfdata(intf);
187	if (chip) { /* if !chip, fw upload has been performed */
188	card = chip->card;
189	chip->intf_count--;
190	if (!chip->intf_count) {
191	mutex_lock(&register_mutex);
192	devices[chip->regidx] = NULL;
193	chips[chip->regidx] = NULL;
194	mutex_unlock(&register_mutex);
195
196	chip->shutdown = true;
197	usb6fire_chip_abort(chip);
198	usb6fire_chip_destroy(chip);
199	}
200	}
201	}
202
203	static struct usb_device_id device_table[] = {
204	{
205	.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
206	.idVendor = 0x0ccd,
207	.idProduct = 0x0080
208	},
209	{}
210	};
211
212	MODULE_DEVICE_TABLE(usb, device_table);
213
214	static struct usb_driver driver = {
215	.name = "snd-usb-6fire",
216	.probe = usb6fire_chip_probe,
217	.disconnect = usb6fire_chip_disconnect,
218	.id_table = device_table,
219	};
220
221	static int __init usb6fire_chip_init(void)
222	{
223	return usb_register(&driver);
224	}
225
226	static void __exit usb6fire_chip_cleanup(void)
227	{
228	usb_deregister(&driver);
229	}
230
231	module_init(usb6fire_chip_init);
232	module_exit(usb6fire_chip_cleanup);