[net-next-2.6.git] / drivers / bluetooth / bcm203x.c

/*
 *
 *  Broadcom Blutonium firmware driver
 *
 *  Copyright (C) 2003  Maxim Krasnyansky <maxk@qualcomm.com>
 *  Copyright (C) 2003  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/module.h>

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

#include <linux/device.h>
#include <linux/firmware.h>

#include <linux/usb.h>

#include <net/bluetooth/bluetooth.h>

#define VERSION "1.2"

static const struct usb_device_id bcm203x_table[] = {
	/* Broadcom Blutonium (BCM2033) */
	{ USB_DEVICE(0x0a5c, 0x2033) },

	{ }	/* Terminating entry */
};

MODULE_DEVICE_TABLE(usb, bcm203x_table);

#define BCM203X_ERROR		0
#define BCM203X_RESET		1
#define BCM203X_LOAD_MINIDRV	2
#define BCM203X_SELECT_MEMORY	3
#define BCM203X_CHECK_MEMORY	4
#define BCM203X_LOAD_FIRMWARE	5
#define BCM203X_CHECK_FIRMWARE	6

#define BCM203X_IN_EP		0x81
#define BCM203X_OUT_EP		0x02

struct bcm203x_data {
	struct usb_device	*udev;

	unsigned long		state;

	struct work_struct	work;

	struct urb		*urb;
	unsigned char		*buffer;

	unsigned char		*fw_data;
	unsigned int		fw_size;
	unsigned int		fw_sent;
};

static void bcm203x_complete(struct urb *urb)
{
	struct bcm203x_data *data = urb->context;
	struct usb_device *udev = urb->dev;
	int len;

	BT_DBG("udev %p urb %p", udev, urb);

	if (urb->status) {
		BT_ERR("URB failed with status %d", urb->status);
		data->state = BCM203X_ERROR;
		return;
	}

	switch (data->state) {
	case BCM203X_LOAD_MINIDRV:
		memcpy(data->buffer, "#", 1);

		usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
				data->buffer, 1, bcm203x_complete, data);

		data->state = BCM203X_SELECT_MEMORY;

		schedule_work(&data->work);
		break;

	case BCM203X_SELECT_MEMORY:
		usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
				data->buffer, 32, bcm203x_complete, data, 1);

		data->state = BCM203X_CHECK_MEMORY;

		if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
			BT_ERR("Can't submit URB");
		break;

	case BCM203X_CHECK_MEMORY:
		if (data->buffer[0] != '#') {
			BT_ERR("Memory select failed");
			data->state = BCM203X_ERROR;
			break;
		}

		data->state = BCM203X_LOAD_FIRMWARE;

	case BCM203X_LOAD_FIRMWARE:
		if (data->fw_sent == data->fw_size) {
			usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
				data->buffer, 32, bcm203x_complete, data, 1);

			data->state = BCM203X_CHECK_FIRMWARE;
		} else {
			len = min_t(uint, data->fw_size - data->fw_sent, 4096);

			usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
				data->fw_data + data->fw_sent, len, bcm203x_complete, data);

			data->fw_sent += len;
		}

		if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
			BT_ERR("Can't submit URB");
		break;

	case BCM203X_CHECK_FIRMWARE:
		if (data->buffer[0] != '.') {
			BT_ERR("Firmware loading failed");
			data->state = BCM203X_ERROR;
			break;
		}

		data->state = BCM203X_RESET;
		break;
	}
}

static void bcm203x_work(struct work_struct *work)
{
	struct bcm203x_data *data =
		container_of(work, struct bcm203x_data, work);

	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
		BT_ERR("Can't submit URB");
}

static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	const struct firmware *firmware;
	struct usb_device *udev = interface_to_usbdev(intf);
	struct bcm203x_data *data;
	int size;

	BT_DBG("intf %p id %p", intf, id);

	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
		return -ENODEV;

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data) {
		BT_ERR("Can't allocate memory for data structure");
		return -ENOMEM;
	}

	data->udev  = udev;
	data->state = BCM203X_LOAD_MINIDRV;

	data->urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!data->urb) {
		BT_ERR("Can't allocate URB");
		kfree(data);
		return -ENOMEM;
	}

	if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
		BT_ERR("Mini driver request failed");
		usb_free_urb(data->urb);
		kfree(data);
		return -EIO;
	}

	BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size);

	size = max_t(uint, firmware->size, 4096);

	data->buffer = kmalloc(size, GFP_KERNEL);
	if (!data->buffer) {
		BT_ERR("Can't allocate memory for mini driver");
		release_firmware(firmware);
		usb_free_urb(data->urb);
		kfree(data);
		return -ENOMEM;
	}

	memcpy(data->buffer, firmware->data, firmware->size);

	usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
			data->buffer, firmware->size, bcm203x_complete, data);

	release_firmware(firmware);

	if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
		BT_ERR("Firmware request failed");
		usb_free_urb(data->urb);
		kfree(data->buffer);
		kfree(data);
		return -EIO;
	}

	BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);

	data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL);
	if (!data->fw_data) {
		BT_ERR("Can't allocate memory for firmware image");
		release_firmware(firmware);
		usb_free_urb(data->urb);
		kfree(data->buffer);
		kfree(data);
		return -ENOMEM;
	}

	data->fw_size = firmware->size;
	data->fw_sent = 0;

	release_firmware(firmware);

	INIT_WORK(&data->work, bcm203x_work);

	usb_set_intfdata(intf, data);

	schedule_work(&data->work);

	return 0;
}

static void bcm203x_disconnect(struct usb_interface *intf)
{
	struct bcm203x_data *data = usb_get_intfdata(intf);

	BT_DBG("intf %p", intf);

	usb_kill_urb(data->urb);

	usb_set_intfdata(intf, NULL);

	usb_free_urb(data->urb);
	kfree(data->fw_data);
	kfree(data->buffer);
	kfree(data);
}

static struct usb_driver bcm203x_driver = {
	.name		= "bcm203x",
	.probe		= bcm203x_probe,
	.disconnect	= bcm203x_disconnect,
	.id_table	= bcm203x_table,
};

static int __init bcm203x_init(void)
{
	int err;

	BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION);

	err = usb_register(&bcm203x_driver);
	if (err < 0)
		BT_ERR("Failed to register USB driver");

	return err;
}

static void __exit bcm203x_exit(void)
{
	usb_deregister(&bcm203x_driver);
}

module_init(bcm203x_init);
module_exit(bcm203x_exit);

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("BCM2033-MD.hex");
MODULE_FIRMWARE("BCM2033-FW.bin");
Commit	Line	Data
1da177e4 LT	1	/*
	2	*
	3	* Broadcom Blutonium firmware driver
	4	*
	5	* Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
	6	* Copyright (C) 2003 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
1da177e4 LT	25	#include <linux/module.h>
	26
	27	#include <linux/kernel.h>
	28	#include <linux/init.h>
	29	#include <linux/slab.h>
	30	#include <linux/types.h>
	31	#include <linux/errno.h>
1da177e4 LT	32
	33	#include <linux/device.h>
	34	#include <linux/firmware.h>
	35
	36	#include <linux/usb.h>
	37
	38	#include <net/bluetooth/bluetooth.h>
	39
943d56b0	40	#define VERSION "1.2"
1da177e4	41
8978111e	42	static const struct usb_device_id bcm203x_table[] = {
1da177e4 LT	43	/* Broadcom Blutonium (BCM2033) */
	44	{ USB_DEVICE(0x0a5c, 0x2033) },
	45
	46	{ } /* Terminating entry */
	47	};
	48
	49	MODULE_DEVICE_TABLE(usb, bcm203x_table);
	50
	51	#define BCM203X_ERROR 0
	52	#define BCM203X_RESET 1
	53	#define BCM203X_LOAD_MINIDRV 2
	54	#define BCM203X_SELECT_MEMORY 3
	55	#define BCM203X_CHECK_MEMORY 4
	56	#define BCM203X_LOAD_FIRMWARE 5
	57	#define BCM203X_CHECK_FIRMWARE 6
	58
	59	#define BCM203X_IN_EP 0x81
	60	#define BCM203X_OUT_EP 0x02
	61
	62	struct bcm203x_data {
	63	struct usb_device *udev;
	64
	65	unsigned long state;
	66
3f530692	67	struct work_struct work;
1da177e4 LT	68
	69	struct urb *urb;
	70	unsigned char *buffer;
	71
	72	unsigned char *fw_data;
	73	unsigned int fw_size;
	74	unsigned int fw_sent;
	75	};
	76
7d12e780	77	static void bcm203x_complete(struct urb *urb)
1da177e4 LT	78	{
	79	struct bcm203x_data *data = urb->context;
	80	struct usb_device *udev = urb->dev;
	81	int len;
	82
	83	BT_DBG("udev %p urb %p", udev, urb);
	84
	85	if (urb->status) {
	86	BT_ERR("URB failed with status %d", urb->status);
	87	data->state = BCM203X_ERROR;
	88	return;
	89	}
	90
	91	switch (data->state) {
	92	case BCM203X_LOAD_MINIDRV:
	93	memcpy(data->buffer, "#", 1);
	94
	95	usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
	96	data->buffer, 1, bcm203x_complete, data);
	97
	98	data->state = BCM203X_SELECT_MEMORY;
	99
3f530692	100	schedule_work(&data->work);
1da177e4 LT	101	break;
	102
	103	case BCM203X_SELECT_MEMORY:
	104	usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
	105	data->buffer, 32, bcm203x_complete, data, 1);
	106
	107	data->state = BCM203X_CHECK_MEMORY;
	108
	109	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
	110	BT_ERR("Can't submit URB");
	111	break;
	112
	113	case BCM203X_CHECK_MEMORY:
	114	if (data->buffer[0] != '#') {
	115	BT_ERR("Memory select failed");
	116	data->state = BCM203X_ERROR;
	117	break;
	118	}
	119
	120	data->state = BCM203X_LOAD_FIRMWARE;
	121
	122	case BCM203X_LOAD_FIRMWARE:
	123	if (data->fw_sent == data->fw_size) {
	124	usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
	125	data->buffer, 32, bcm203x_complete, data, 1);
	126
	127	data->state = BCM203X_CHECK_FIRMWARE;
	128	} else {
	129	len = min_t(uint, data->fw_size - data->fw_sent, 4096);
	130
	131	usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
	132	data->fw_data + data->fw_sent, len, bcm203x_complete, data);
	133
	134	data->fw_sent += len;
	135	}
	136
	137	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
	138	BT_ERR("Can't submit URB");
	139	break;
	140
	141	case BCM203X_CHECK_FIRMWARE:
	142	if (data->buffer[0] != '.') {
	143	BT_ERR("Firmware loading failed");
	144	data->state = BCM203X_ERROR;
	145	break;
	146	}
	147
	148	data->state = BCM203X_RESET;
	149	break;
	150	}
	151	}
	152
c4028958	153	static void bcm203x_work(struct work_struct *work)
1da177e4	154	{
c4028958 DH	155	struct bcm203x_data *data =
c4028958 DH	156	container_of(work, struct bcm203x_data, work);
1da177e4 LT	157
	158	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
	159	BT_ERR("Can't submit URB");
	160	}
	161
	162	static int bcm203x_probe(struct usb_interface intf, const struct usb_device_id id)
	163	{
	164	const struct firmware *firmware;
	165	struct usb_device *udev = interface_to_usbdev(intf);
	166	struct bcm203x_data *data;
	167	int size;
	168
	169	BT_DBG("intf %p id %p", intf, id);
	170
943d56b0	171	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1da177e4 LT	172	return -ENODEV;
1da177e4 LT	173
089b1dbb	174	data = kzalloc(sizeof(*data), GFP_KERNEL);
1da177e4 LT	175	if (!data) {
	176	BT_ERR("Can't allocate memory for data structure");
	177	return -ENOMEM;
	178	}
	179
1da177e4 LT	180	data->udev = udev;
	181	data->state = BCM203X_LOAD_MINIDRV;
	182
	183	data->urb = usb_alloc_urb(0, GFP_KERNEL);
	184	if (!data->urb) {
	185	BT_ERR("Can't allocate URB");
	186	kfree(data);
	187	return -ENOMEM;
	188	}
	189
	190	if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
	191	BT_ERR("Mini driver request failed");
	192	usb_free_urb(data->urb);
	193	kfree(data);
	194	return -EIO;
	195	}
	196
a418b893	197	BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size);
1da177e4 LT	198
	199	size = max_t(uint, firmware->size, 4096);
	200
	201	data->buffer = kmalloc(size, GFP_KERNEL);
	202	if (!data->buffer) {
	203	BT_ERR("Can't allocate memory for mini driver");
	204	release_firmware(firmware);
	205	usb_free_urb(data->urb);
	206	kfree(data);
	207	return -ENOMEM;
	208	}
	209
	210	memcpy(data->buffer, firmware->data, firmware->size);
	211
	212	usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
	213	data->buffer, firmware->size, bcm203x_complete, data);
	214
	215	release_firmware(firmware);
	216
	217	if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
	218	BT_ERR("Firmware request failed");
	219	usb_free_urb(data->urb);
	220	kfree(data->buffer);
	221	kfree(data);
	222	return -EIO;
	223	}
	224
a418b893	225	BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
1da177e4	226
5ee283c0	227	data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL);
1da177e4 LT	228	if (!data->fw_data) {
1da177e4 LT	229	BT_ERR("Can't allocate memory for firmware image");
73ca66b9	230	release_firmware(firmware);
1da177e4 LT	231	usb_free_urb(data->urb);
	232	kfree(data->buffer);
	233	kfree(data);
	234	return -ENOMEM;
	235	}
	236
1da177e4 LT	237	data->fw_size = firmware->size;
	238	data->fw_sent = 0;
	239
	240	release_firmware(firmware);
	241
c4028958	242	INIT_WORK(&data->work, bcm203x_work);
1da177e4 LT	243
	244	usb_set_intfdata(intf, data);
	245
3f530692	246	schedule_work(&data->work);
1da177e4 LT	247
	248	return 0;
	249	}
	250
	251	static void bcm203x_disconnect(struct usb_interface *intf)
	252	{
	253	struct bcm203x_data *data = usb_get_intfdata(intf);
	254
	255	BT_DBG("intf %p", intf);
	256
	257	usb_kill_urb(data->urb);
	258
	259	usb_set_intfdata(intf, NULL);
	260
	261	usb_free_urb(data->urb);
	262	kfree(data->fw_data);
	263	kfree(data->buffer);
	264	kfree(data);
	265	}
	266
	267	static struct usb_driver bcm203x_driver = {
1da177e4 LT	268	.name = "bcm203x",
	269	.probe = bcm203x_probe,
	270	.disconnect = bcm203x_disconnect,
	271	.id_table = bcm203x_table,
	272	};
	273
	274	static int __init bcm203x_init(void)
	275	{
	276	int err;
	277
	278	BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION);
	279
	280	err = usb_register(&bcm203x_driver);
	281	if (err < 0)
	282	BT_ERR("Failed to register USB driver");
	283
	284	return err;
	285	}
	286
	287	static void __exit bcm203x_exit(void)
	288	{
	289	usb_deregister(&bcm203x_driver);
	290	}
	291
	292	module_init(bcm203x_init);
	293	module_exit(bcm203x_exit);
	294
1da177e4 LT	295	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	296	MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
	297	MODULE_VERSION(VERSION);
	298	MODULE_LICENSE("GPL");
2312119a MH	299	MODULE_FIRMWARE("BCM2033-MD.hex");
2312119a MH	300	MODULE_FIRMWARE("BCM2033-FW.bin");