[linux-2.6-block.git] / drivers / bluetooth / btsdio.c

/*
 *
 *  Generic Bluetooth SDIO driver
 *
 *  Copyright (C) 2007  Cambridge Silicon Radio Ltd.
 *  Copyright (C) 2007  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/skbuff.h>

#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#define VERSION "0.1"

static const struct sdio_device_id btsdio_table[] = {
	/* Generic Bluetooth Type-A SDIO device */
	{ SDIO_DEVICE_CLASS(SDIO_CLASS_BT_A) },

	/* Generic Bluetooth Type-B SDIO device */
	{ SDIO_DEVICE_CLASS(SDIO_CLASS_BT_B) },

	/* Generic Bluetooth AMP controller */
	{ SDIO_DEVICE_CLASS(SDIO_CLASS_BT_AMP) },

	{ }	/* Terminating entry */
};

MODULE_DEVICE_TABLE(sdio, btsdio_table);

struct btsdio_data {
	struct hci_dev   *hdev;
	struct sdio_func *func;

	struct work_struct work;

	struct sk_buff_head txq;
};

#define REG_RDAT     0x00	/* Receiver Data */
#define REG_TDAT     0x00	/* Transmitter Data */
#define REG_PC_RRT   0x10	/* Read Packet Control */
#define REG_PC_WRT   0x11	/* Write Packet Control */
#define REG_RTC_STAT 0x12	/* Retry Control Status */
#define REG_RTC_SET  0x12	/* Retry Control Set */
#define REG_INTRD    0x13	/* Interrupt Indication */
#define REG_CL_INTRD 0x13	/* Interrupt Clear */
#define REG_EN_INTRD 0x14	/* Interrupt Enable */
#define REG_MD_STAT  0x20	/* Bluetooth Mode Status */
#define REG_MD_SET   0x20	/* Bluetooth Mode Set */

static int btsdio_tx_packet(struct btsdio_data *data, struct sk_buff *skb)
{
	int err;

	BT_DBG("%s", data->hdev->name);

	/* Prepend Type-A header */
	skb_push(skb, 4);
	skb->data[0] = (skb->len & 0x0000ff);
	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	skb->data[2] = (skb->len & 0xff0000) >> 16;
	skb->data[3] = bt_cb(skb)->pkt_type;

	err = sdio_writesb(data->func, REG_TDAT, skb->data, skb->len);
	if (err < 0) {
		skb_pull(skb, 4);
		sdio_writeb(data->func, 0x01, REG_PC_WRT, NULL);
		return err;
	}

	data->hdev->stat.byte_tx += skb->len;

	kfree_skb(skb);

	return 0;
}

static void btsdio_work(struct work_struct *work)
{
	struct btsdio_data *data = container_of(work, struct btsdio_data, work);
	struct sk_buff *skb;
	int err;

	BT_DBG("%s", data->hdev->name);

	sdio_claim_host(data->func);

	while ((skb = skb_dequeue(&data->txq))) {
		err = btsdio_tx_packet(data, skb);
		if (err < 0) {
			data->hdev->stat.err_tx++;
			skb_queue_head(&data->txq, skb);
			break;
		}
	}

	sdio_release_host(data->func);
}

static int btsdio_rx_packet(struct btsdio_data *data)
{
	u8 hdr[4] __attribute__ ((aligned(4)));
	struct sk_buff *skb;
	int err, len;

	BT_DBG("%s", data->hdev->name);

	err = sdio_readsb(data->func, hdr, REG_RDAT, 4);
	if (err < 0)
		return err;

	len = hdr[0] | (hdr[1] << 8) | (hdr[2] << 16);
	if (len < 4 || len > 65543)
		return -EILSEQ;

	skb = bt_skb_alloc(len - 4, GFP_KERNEL);
	if (!skb) {
		/* Out of memory. Prepare a read retry and just
		 * return with the expectation that the next time
		 * we're called we'll have more memory. */
		return -ENOMEM;
	}

	skb_put(skb, len - 4);

	err = sdio_readsb(data->func, skb->data, REG_RDAT, len - 4);
	if (err < 0) {
		kfree_skb(skb);
		return err;
	}

	data->hdev->stat.byte_rx += len;

	bt_cb(skb)->pkt_type = hdr[3];

	err = hci_recv_frame(data->hdev, skb);
	if (err < 0)
		return err;

	sdio_writeb(data->func, 0x00, REG_PC_RRT, NULL);

	return 0;
}

static void btsdio_interrupt(struct sdio_func *func)
{
	struct btsdio_data *data = sdio_get_drvdata(func);
	int intrd;

	BT_DBG("%s", data->hdev->name);

	intrd = sdio_readb(func, REG_INTRD, NULL);
	if (intrd & 0x01) {
		sdio_writeb(func, 0x01, REG_CL_INTRD, NULL);

		if (btsdio_rx_packet(data) < 0) {
			data->hdev->stat.err_rx++;
			sdio_writeb(data->func, 0x01, REG_PC_RRT, NULL);
		}
	}
}

static int btsdio_open(struct hci_dev *hdev)
{
	struct btsdio_data *data = hci_get_drvdata(hdev);
	int err;

	BT_DBG("%s", hdev->name);

	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
		return 0;

	sdio_claim_host(data->func);

	err = sdio_enable_func(data->func);
	if (err < 0) {
		clear_bit(HCI_RUNNING, &hdev->flags);
		goto release;
	}

	err = sdio_claim_irq(data->func, btsdio_interrupt);
	if (err < 0) {
		sdio_disable_func(data->func);
		clear_bit(HCI_RUNNING, &hdev->flags);
		goto release;
	}

	if (data->func->class == SDIO_CLASS_BT_B)
		sdio_writeb(data->func, 0x00, REG_MD_SET, NULL);

	sdio_writeb(data->func, 0x01, REG_EN_INTRD, NULL);

release:
	sdio_release_host(data->func);

	return err;
}

static int btsdio_close(struct hci_dev *hdev)
{
	struct btsdio_data *data = hci_get_drvdata(hdev);

	BT_DBG("%s", hdev->name);

	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
		return 0;

	sdio_claim_host(data->func);

	sdio_writeb(data->func, 0x00, REG_EN_INTRD, NULL);

	sdio_release_irq(data->func);
	sdio_disable_func(data->func);

	sdio_release_host(data->func);

	return 0;
}

static int btsdio_flush(struct hci_dev *hdev)
{
	struct btsdio_data *data = hci_get_drvdata(hdev);

	BT_DBG("%s", hdev->name);

	skb_queue_purge(&data->txq);

	return 0;
}

static int btsdio_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct btsdio_data *data = hci_get_drvdata(hdev);

	BT_DBG("%s", hdev->name);

	if (!test_bit(HCI_RUNNING, &hdev->flags))
		return -EBUSY;

	switch (bt_cb(skb)->pkt_type) {
	case HCI_COMMAND_PKT:
		hdev->stat.cmd_tx++;
		break;

	case HCI_ACLDATA_PKT:
		hdev->stat.acl_tx++;
		break;

	case HCI_SCODATA_PKT:
		hdev->stat.sco_tx++;
		break;

	default:
		return -EILSEQ;
	}

	skb_queue_tail(&data->txq, skb);

	schedule_work(&data->work);

	return 0;
}

static int btsdio_probe(struct sdio_func *func,
				const struct sdio_device_id *id)
{
	struct btsdio_data *data;
	struct hci_dev *hdev;
	struct sdio_func_tuple *tuple = func->tuples;
	int err;

	BT_DBG("func %p id %p class 0x%04x", func, id, func->class);

	while (tuple) {
		BT_DBG("code 0x%x size %d", tuple->code, tuple->size);
		tuple = tuple->next;
	}

	data = devm_kzalloc(&func->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->func = func;

	INIT_WORK(&data->work, btsdio_work);

	skb_queue_head_init(&data->txq);

	hdev = hci_alloc_dev();
	if (!hdev)
		return -ENOMEM;

	hdev->bus = HCI_SDIO;
	hci_set_drvdata(hdev, data);

	if (id->class == SDIO_CLASS_BT_AMP)
		hdev->dev_type = HCI_AMP;
	else
		hdev->dev_type = HCI_BREDR;

	data->hdev = hdev;

	SET_HCIDEV_DEV(hdev, &func->dev);

	hdev->open     = btsdio_open;
	hdev->close    = btsdio_close;
	hdev->flush    = btsdio_flush;
	hdev->send     = btsdio_send_frame;

	if (func->vendor == 0x0104 && func->device == 0x00c5)
		set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);

	err = hci_register_dev(hdev);
	if (err < 0) {
		hci_free_dev(hdev);
		return err;
	}

	sdio_set_drvdata(func, data);

	return 0;
}

static void btsdio_remove(struct sdio_func *func)
{
	struct btsdio_data *data = sdio_get_drvdata(func);
	struct hci_dev *hdev;

	BT_DBG("func %p", func);

	if (!data)
		return;

	hdev = data->hdev;

	sdio_set_drvdata(func, NULL);

	hci_unregister_dev(hdev);

	hci_free_dev(hdev);
}

static struct sdio_driver btsdio_driver = {
	.name		= "btsdio",
	.probe		= btsdio_probe,
	.remove		= btsdio_remove,
	.id_table	= btsdio_table,
};

static int __init btsdio_init(void)
{
	BT_INFO("Generic Bluetooth SDIO driver ver %s", VERSION);

	return sdio_register_driver(&btsdio_driver);
}

static void __exit btsdio_exit(void)
{
	sdio_unregister_driver(&btsdio_driver);
}

module_init(btsdio_init);
module_exit(btsdio_exit);

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Generic Bluetooth SDIO driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
Commit	Line	Data
ddbaf13e MH	1	/*
	2	*
	3	* Generic Bluetooth SDIO driver
	4	*
	5	* Copyright (C) 2007 Cambridge Silicon Radio Ltd.
	6	* Copyright (C) 2007 Marcel Holtmann <marcel@holtmann.org>
	7	*
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	*/
	24
	25	#include <linux/kernel.h>
	26	#include <linux/module.h>
	27	#include <linux/init.h>
	28	#include <linux/slab.h>
	29	#include <linux/types.h>
	30	#include <linux/sched.h>
	31	#include <linux/errno.h>
	32	#include <linux/skbuff.h>
	33
	34	#include <linux/mmc/sdio_ids.h>
	35	#include <linux/mmc/sdio_func.h>
	36
	37	#include <net/bluetooth/bluetooth.h>
	38	#include <net/bluetooth/hci_core.h>
	39
ddbaf13e MH	40	#define VERSION "0.1"
	41
	42	static const struct sdio_device_id btsdio_table[] = {
	43	/* Generic Bluetooth Type-A SDIO device */
	44	{ SDIO_DEVICE_CLASS(SDIO_CLASS_BT_A) },
	45
	46	/* Generic Bluetooth Type-B SDIO device */
	47	{ SDIO_DEVICE_CLASS(SDIO_CLASS_BT_B) },
	48
fb3d8eb4 DV	49	/* Generic Bluetooth AMP controller */
	50	{ SDIO_DEVICE_CLASS(SDIO_CLASS_BT_AMP) },
	51
ddbaf13e MH	52	{ } /* Terminating entry */
	53	};
	54
	55	MODULE_DEVICE_TABLE(sdio, btsdio_table);
	56
	57	struct btsdio_data {
	58	struct hci_dev *hdev;
	59	struct sdio_func *func;
	60
	61	struct work_struct work;
	62
	63	struct sk_buff_head txq;
	64	};
	65
	66	#define REG_RDAT 0x00 /* Receiver Data */
	67	#define REG_TDAT 0x00 /* Transmitter Data */
	68	#define REG_PC_RRT 0x10 /* Read Packet Control */
	69	#define REG_PC_WRT 0x11 /* Write Packet Control */
	70	#define REG_RTC_STAT 0x12 /* Retry Control Status */
	71	#define REG_RTC_SET 0x12 /* Retry Control Set */
	72	#define REG_INTRD 0x13 /* Interrupt Indication */
	73	#define REG_CL_INTRD 0x13 /* Interrupt Clear */
	74	#define REG_EN_INTRD 0x14 /* Interrupt Enable */
	75	#define REG_MD_STAT 0x20 /* Bluetooth Mode Status */
bc721970	76	#define REG_MD_SET 0x20 /* Bluetooth Mode Set */
ddbaf13e MH	77
	78	static int btsdio_tx_packet(struct btsdio_data data, struct sk_buff skb)
	79	{
	80	int err;
	81
	82	BT_DBG("%s", data->hdev->name);
	83
	84	/* Prepend Type-A header */
	85	skb_push(skb, 4);
	86	skb->data[0] = (skb->len & 0x0000ff);
	87	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	88	skb->data[2] = (skb->len & 0xff0000) >> 16;
	89	skb->data[3] = bt_cb(skb)->pkt_type;
	90
	91	err = sdio_writesb(data->func, REG_TDAT, skb->data, skb->len);
	92	if (err < 0) {
7644d63d	93	skb_pull(skb, 4);
ddbaf13e MH	94	sdio_writeb(data->func, 0x01, REG_PC_WRT, NULL);
	95	return err;
	96	}
	97
	98	data->hdev->stat.byte_tx += skb->len;
	99
	100	kfree_skb(skb);
	101
	102	return 0;
	103	}
	104
	105	static void btsdio_work(struct work_struct *work)
	106	{
	107	struct btsdio_data *data = container_of(work, struct btsdio_data, work);
	108	struct sk_buff *skb;
	109	int err;
	110
	111	BT_DBG("%s", data->hdev->name);
	112
	113	sdio_claim_host(data->func);
	114
	115	while ((skb = skb_dequeue(&data->txq))) {
	116	err = btsdio_tx_packet(data, skb);
	117	if (err < 0) {
	118	data->hdev->stat.err_tx++;
	119	skb_queue_head(&data->txq, skb);
	120	break;
	121	}
	122	}
	123
	124	sdio_release_host(data->func);
	125	}
	126
	127	static int btsdio_rx_packet(struct btsdio_data *data)
	128	{
	129	u8 hdr[4] __attribute__ ((aligned(4)));
	130	struct sk_buff *skb;
	131	int err, len;
	132
	133	BT_DBG("%s", data->hdev->name);
	134
	135	err = sdio_readsb(data->func, hdr, REG_RDAT, 4);
	136	if (err < 0)
	137	return err;
	138
	139	len = hdr[0] \| (hdr[1] << 8) \| (hdr[2] << 16);
	140	if (len < 4 \|\| len > 65543)
	141	return -EILSEQ;
	142
	143	skb = bt_skb_alloc(len - 4, GFP_KERNEL);
	144	if (!skb) {
	145	/* Out of memory. Prepare a read retry and just
	146	* return with the expectation that the next time
	147	* we're called we'll have more memory. */
	148	return -ENOMEM;
	149	}
	150
	151	skb_put(skb, len - 4);
	152
	153	err = sdio_readsb(data->func, skb->data, REG_RDAT, len - 4);
	154	if (err < 0) {
cbfd24a7	155	kfree_skb(skb);
ddbaf13e MH	156	return err;
	157	}
	158
	159	data->hdev->stat.byte_rx += len;
	160
ddbaf13e MH	161	bt_cb(skb)->pkt_type = hdr[3];
ddbaf13e MH	162
e1a26170	163	err = hci_recv_frame(data->hdev, skb);
2fa99342	164	if (err < 0)
ddbaf13e	165	return err;
ddbaf13e MH	166
	167	sdio_writeb(data->func, 0x00, REG_PC_RRT, NULL);
	168
	169	return 0;
	170	}
	171
	172	static void btsdio_interrupt(struct sdio_func *func)
	173	{
	174	struct btsdio_data *data = sdio_get_drvdata(func);
	175	int intrd;
	176
	177	BT_DBG("%s", data->hdev->name);
	178
	179	intrd = sdio_readb(func, REG_INTRD, NULL);
	180	if (intrd & 0x01) {
	181	sdio_writeb(func, 0x01, REG_CL_INTRD, NULL);
	182
	183	if (btsdio_rx_packet(data) < 0) {
	184	data->hdev->stat.err_rx++;
	185	sdio_writeb(data->func, 0x01, REG_PC_RRT, NULL);
	186	}
	187	}
	188	}
	189
	190	static int btsdio_open(struct hci_dev *hdev)
	191	{
155961e8	192	struct btsdio_data *data = hci_get_drvdata(hdev);
ddbaf13e MH	193	int err;
	194
	195	BT_DBG("%s", hdev->name);
	196
	197	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
	198	return 0;
	199
	200	sdio_claim_host(data->func);
	201
	202	err = sdio_enable_func(data->func);
	203	if (err < 0) {
	204	clear_bit(HCI_RUNNING, &hdev->flags);
	205	goto release;
	206	}
	207
	208	err = sdio_claim_irq(data->func, btsdio_interrupt);
	209	if (err < 0) {
	210	sdio_disable_func(data->func);
	211	clear_bit(HCI_RUNNING, &hdev->flags);
	212	goto release;
	213	}
	214
	215	if (data->func->class == SDIO_CLASS_BT_B)
bc721970	216	sdio_writeb(data->func, 0x00, REG_MD_SET, NULL);
ddbaf13e MH	217
	218	sdio_writeb(data->func, 0x01, REG_EN_INTRD, NULL);
	219
	220	release:
	221	sdio_release_host(data->func);
	222
	223	return err;
	224	}
	225
	226	static int btsdio_close(struct hci_dev *hdev)
	227	{
155961e8	228	struct btsdio_data *data = hci_get_drvdata(hdev);
ddbaf13e MH	229
	230	BT_DBG("%s", hdev->name);
	231
	232	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
	233	return 0;
	234
	235	sdio_claim_host(data->func);
	236
	237	sdio_writeb(data->func, 0x00, REG_EN_INTRD, NULL);
	238
	239	sdio_release_irq(data->func);
	240	sdio_disable_func(data->func);
	241
	242	sdio_release_host(data->func);
	243
	244	return 0;
	245	}
	246
	247	static int btsdio_flush(struct hci_dev *hdev)
	248	{
155961e8	249	struct btsdio_data *data = hci_get_drvdata(hdev);
ddbaf13e MH	250
	251	BT_DBG("%s", hdev->name);
	252
	253	skb_queue_purge(&data->txq);
	254
	255	return 0;
	256	}
	257
7bd8f09f	258	static int btsdio_send_frame(struct hci_dev hdev, struct sk_buff skb)
ddbaf13e	259	{
155961e8	260	struct btsdio_data *data = hci_get_drvdata(hdev);
ddbaf13e MH	261
	262	BT_DBG("%s", hdev->name);
	263
	264	if (!test_bit(HCI_RUNNING, &hdev->flags))
	265	return -EBUSY;
	266
	267	switch (bt_cb(skb)->pkt_type) {
	268	case HCI_COMMAND_PKT:
	269	hdev->stat.cmd_tx++;
	270	break;
	271
	272	case HCI_ACLDATA_PKT:
	273	hdev->stat.acl_tx++;
	274	break;
	275
	276	case HCI_SCODATA_PKT:
	277	hdev->stat.sco_tx++;
	278	break;
	279
	280	default:
	281	return -EILSEQ;
	282	}
	283
	284	skb_queue_tail(&data->txq, skb);
	285
	286	schedule_work(&data->work);
	287
	288	return 0;
	289	}
	290
ddbaf13e MH	291	static int btsdio_probe(struct sdio_func *func,
	292	const struct sdio_device_id *id)
	293	{
	294	struct btsdio_data *data;
	295	struct hci_dev *hdev;
	296	struct sdio_func_tuple *tuple = func->tuples;
	297	int err;
	298
	299	BT_DBG("func %p id %p class 0x%04x", func, id, func->class);
	300
	301	while (tuple) {
	302	BT_DBG("code 0x%x size %d", tuple->code, tuple->size);
	303	tuple = tuple->next;
	304	}
	305
3a382772	306	data = devm_kzalloc(&func->dev, sizeof(*data), GFP_KERNEL);
ddbaf13e MH	307	if (!data)
	308	return -ENOMEM;
	309
	310	data->func = func;
	311
	312	INIT_WORK(&data->work, btsdio_work);
	313
	314	skb_queue_head_init(&data->txq);
	315
	316	hdev = hci_alloc_dev();
3a382772	317	if (!hdev)
ddbaf13e	318	return -ENOMEM;
ddbaf13e	319
c13854ce	320	hdev->bus = HCI_SDIO;
155961e8	321	hci_set_drvdata(hdev, data);
ddbaf13e	322
fb3d8eb4 DV	323	if (id->class == SDIO_CLASS_BT_AMP)
	324	hdev->dev_type = HCI_AMP;
	325	else
	326	hdev->dev_type = HCI_BREDR;
	327
ddbaf13e MH	328	data->hdev = hdev;
	329
	330	SET_HCIDEV_DEV(hdev, &func->dev);
	331
	332	hdev->open = btsdio_open;
	333	hdev->close = btsdio_close;
	334	hdev->flush = btsdio_flush;
	335	hdev->send = btsdio_send_frame;
ddbaf13e	336
de8b5828 MH	337	if (func->vendor == 0x0104 && func->device == 0x00c5)
	338	set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
	339
ddbaf13e MH	340	err = hci_register_dev(hdev);
	341	if (err < 0) {
	342	hci_free_dev(hdev);
ddbaf13e MH	343	return err;
	344	}
	345
	346	sdio_set_drvdata(func, data);
	347
	348	return 0;
	349	}
	350
	351	static void btsdio_remove(struct sdio_func *func)
	352	{
	353	struct btsdio_data *data = sdio_get_drvdata(func);
	354	struct hci_dev *hdev;
	355
	356	BT_DBG("func %p", func);
	357
	358	if (!data)
	359	return;
	360
	361	hdev = data->hdev;
	362
	363	sdio_set_drvdata(func, NULL);
	364
	365	hci_unregister_dev(hdev);
	366
	367	hci_free_dev(hdev);
	368	}
	369
	370	static struct sdio_driver btsdio_driver = {
	371	.name = "btsdio",
	372	.probe = btsdio_probe,
	373	.remove = btsdio_remove,
	374	.id_table = btsdio_table,
	375	};
	376
	377	static int __init btsdio_init(void)
	378	{
	379	BT_INFO("Generic Bluetooth SDIO driver ver %s", VERSION);
	380
	381	return sdio_register_driver(&btsdio_driver);
	382	}
	383
	384	static void __exit btsdio_exit(void)
	385	{
	386	sdio_unregister_driver(&btsdio_driver);
	387	}
	388
	389	module_init(btsdio_init);
	390	module_exit(btsdio_exit);
	391
	392	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	393	MODULE_DESCRIPTION("Generic Bluetooth SDIO driver ver " VERSION);
	394	MODULE_VERSION(VERSION);
	395	MODULE_LICENSE("GPL");