[linux.git] / drivers / bluetooth / bcm203x.c

/*
 *
 *  Broadcom Blutonium firmware driver
 *
 *  Copyright (C) 2003  Maxim Krasnyansky <[email protected]>
 *  Copyright (C) 2003  Marcel Holtmann <[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; 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/atomic.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;
	atomic_t		shutdown;

	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;

		/* use workqueue to have a small delay */
		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;
		/* fall through */
	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 (atomic_read(&data->shutdown))
		return;

	if (usb_submit_urb(data->urb, GFP_KERNEL) < 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 = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

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

	data->urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!data->urb)
		return -ENOMEM;

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

	/* use workqueue to have a small delay */
	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);

	atomic_inc(&data->shutdown);
	cancel_work_sync(&data->work);

	usb_kill_urb(data->urb);

	usb_set_intfdata(intf, NULL);

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

static struct usb_driver bcm203x_driver = {
	.name		= "bcm203x",
	.probe		= bcm203x_probe,
	.disconnect	= bcm203x_disconnect,
	.id_table	= bcm203x_table,
	.disable_hub_initiated_lpm = 1,
};

module_usb_driver(bcm203x_driver);

MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
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 <[email protected]>
	6	* Copyright (C) 2003 Marcel Holtmann <[email protected]>
	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>
1da177e4 LT	26
fc501ad7	27	#include <linux/atomic.h>
1da177e4 LT	28	#include <linux/kernel.h>
	29	#include <linux/init.h>
	30	#include <linux/slab.h>
	31	#include <linux/types.h>
	32	#include <linux/errno.h>
1da177e4 LT	33
	34	#include <linux/device.h>
	35	#include <linux/firmware.h>
	36
	37	#include <linux/usb.h>
	38
	39	#include <net/bluetooth/bluetooth.h>
	40
943d56b0	41	#define VERSION "1.2"
1da177e4	42
8978111e	43	static const struct usb_device_id bcm203x_table[] = {
1da177e4 LT	44	/* Broadcom Blutonium (BCM2033) */
	45	{ USB_DEVICE(0x0a5c, 0x2033) },
	46
	47	{ } /* Terminating entry */
	48	};
	49
	50	MODULE_DEVICE_TABLE(usb, bcm203x_table);
	51
	52	#define BCM203X_ERROR 0
	53	#define BCM203X_RESET 1
	54	#define BCM203X_LOAD_MINIDRV 2
	55	#define BCM203X_SELECT_MEMORY 3
	56	#define BCM203X_CHECK_MEMORY 4
	57	#define BCM203X_LOAD_FIRMWARE 5
	58	#define BCM203X_CHECK_FIRMWARE 6
	59
	60	#define BCM203X_IN_EP 0x81
	61	#define BCM203X_OUT_EP 0x02
	62
	63	struct bcm203x_data {
	64	struct usb_device *udev;
	65
	66	unsigned long state;
	67
3f530692	68	struct work_struct work;
fc501ad7	69	atomic_t shutdown;
1da177e4 LT	70
	71	struct urb *urb;
	72	unsigned char *buffer;
	73
	74	unsigned char *fw_data;
	75	unsigned int fw_size;
	76	unsigned int fw_sent;
	77	};
	78
7d12e780	79	static void bcm203x_complete(struct urb *urb)
1da177e4 LT	80	{
	81	struct bcm203x_data *data = urb->context;
	82	struct usb_device *udev = urb->dev;
	83	int len;
	84
	85	BT_DBG("udev %p urb %p", udev, urb);
	86
	87	if (urb->status) {
	88	BT_ERR("URB failed with status %d", urb->status);
	89	data->state = BCM203X_ERROR;
	90	return;
	91	}
	92
	93	switch (data->state) {
	94	case BCM203X_LOAD_MINIDRV:
	95	memcpy(data->buffer, "#", 1);
	96
	97	usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
	98	data->buffer, 1, bcm203x_complete, data);
	99
	100	data->state = BCM203X_SELECT_MEMORY;
	101
fc501ad7	102	/* use workqueue to have a small delay */
3f530692	103	schedule_work(&data->work);
1da177e4 LT	104	break;
	105
	106	case BCM203X_SELECT_MEMORY:
	107	usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
	108	data->buffer, 32, bcm203x_complete, data, 1);
	109
	110	data->state = BCM203X_CHECK_MEMORY;
	111
	112	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
	113	BT_ERR("Can't submit URB");
	114	break;
	115
	116	case BCM203X_CHECK_MEMORY:
	117	if (data->buffer[0] != '#') {
	118	BT_ERR("Memory select failed");
	119	data->state = BCM203X_ERROR;
	120	break;
	121	}
	122
	123	data->state = BCM203X_LOAD_FIRMWARE;
fac72b24	124	/* fall through */
1da177e4 LT	125	case BCM203X_LOAD_FIRMWARE:
	126	if (data->fw_sent == data->fw_size) {
	127	usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
	128	data->buffer, 32, bcm203x_complete, data, 1);
	129
	130	data->state = BCM203X_CHECK_FIRMWARE;
	131	} else {
	132	len = min_t(uint, data->fw_size - data->fw_sent, 4096);
	133
	134	usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
	135	data->fw_data + data->fw_sent, len, bcm203x_complete, data);
	136
	137	data->fw_sent += len;
	138	}
	139
	140	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
	141	BT_ERR("Can't submit URB");
	142	break;
	143
	144	case BCM203X_CHECK_FIRMWARE:
	145	if (data->buffer[0] != '.') {
	146	BT_ERR("Firmware loading failed");
	147	data->state = BCM203X_ERROR;
	148	break;
	149	}
	150
	151	data->state = BCM203X_RESET;
	152	break;
	153	}
	154	}
	155
c4028958	156	static void bcm203x_work(struct work_struct *work)
1da177e4	157	{
c4028958 DH	158	struct bcm203x_data *data =
c4028958 DH	159	container_of(work, struct bcm203x_data, work);
1da177e4	160
fc501ad7 DR	161	if (atomic_read(&data->shutdown))
	162	return;
	163
b91a4e3e	164	if (usb_submit_urb(data->urb, GFP_KERNEL) < 0)
1da177e4 LT	165	BT_ERR("Can't submit URB");
	166	}
	167
	168	static int bcm203x_probe(struct usb_interface intf, const struct usb_device_id id)
	169	{
	170	const struct firmware *firmware;
	171	struct usb_device *udev = interface_to_usbdev(intf);
	172	struct bcm203x_data *data;
	173	int size;
	174
	175	BT_DBG("intf %p id %p", intf, id);
	176
943d56b0	177	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1da177e4 LT	178	return -ENODEV;
1da177e4 LT	179
9357cc60	180	data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
17722e24	181	if (!data)
1da177e4	182	return -ENOMEM;
1da177e4	183
1da177e4 LT	184	data->udev = udev;
	185	data->state = BCM203X_LOAD_MINIDRV;
	186
	187	data->urb = usb_alloc_urb(0, GFP_KERNEL);
a2f195a7	188	if (!data->urb)
1da177e4	189	return -ENOMEM;
1da177e4 LT	190
	191	if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
	192	BT_ERR("Mini driver request failed");
	193	usb_free_urb(data->urb);
1da177e4 LT	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);
1da177e4 LT	206	return -ENOMEM;
	207	}
	208
	209	memcpy(data->buffer, firmware->data, firmware->size);
	210
	211	usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
	212	data->buffer, firmware->size, bcm203x_complete, data);
	213
	214	release_firmware(firmware);
	215
	216	if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
	217	BT_ERR("Firmware request failed");
	218	usb_free_urb(data->urb);
	219	kfree(data->buffer);
1da177e4 LT	220	return -EIO;
	221	}
	222
a418b893	223	BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
1da177e4	224
5ee283c0	225	data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL);
1da177e4 LT	226	if (!data->fw_data) {
1da177e4 LT	227	BT_ERR("Can't allocate memory for firmware image");
73ca66b9	228	release_firmware(firmware);
1da177e4 LT	229	usb_free_urb(data->urb);
1da177e4 LT	230	kfree(data->buffer);
1da177e4 LT	231	return -ENOMEM;
	232	}
	233
1da177e4 LT	234	data->fw_size = firmware->size;
	235	data->fw_sent = 0;
	236
	237	release_firmware(firmware);
	238
c4028958	239	INIT_WORK(&data->work, bcm203x_work);
1da177e4 LT	240
	241	usb_set_intfdata(intf, data);
	242
fc501ad7	243	/* use workqueue to have a small delay */
3f530692	244	schedule_work(&data->work);
1da177e4 LT	245
	246	return 0;
	247	}
	248
	249	static void bcm203x_disconnect(struct usb_interface *intf)
	250	{
	251	struct bcm203x_data *data = usb_get_intfdata(intf);
	252
	253	BT_DBG("intf %p", intf);
	254
fc501ad7 DR	255	atomic_inc(&data->shutdown);
	256	cancel_work_sync(&data->work);
	257
1da177e4 LT	258	usb_kill_urb(data->urb);
	259
	260	usb_set_intfdata(intf, NULL);
	261
	262	usb_free_urb(data->urb);
	263	kfree(data->fw_data);
	264	kfree(data->buffer);
1da177e4 LT	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,
e1f12eb6	272	.disable_hub_initiated_lpm = 1,
1da177e4 LT	273	};
1da177e4 LT	274
93f1508c	275	module_usb_driver(bcm203x_driver);
1da177e4	276
1da177e4 LT	277	MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
	278	MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
	279	MODULE_VERSION(VERSION);
	280	MODULE_LICENSE("GPL");
2312119a MH	281	MODULE_FIRMWARE("BCM2033-MD.hex");
2312119a MH	282	MODULE_FIRMWARE("BCM2033-FW.bin");