3 * Broadcom Blutonium firmware driver
5 * Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
6 * Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>
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.
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.
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
25 #include <linux/module.h>
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>
32 #include <linux/timer.h>
34 #include <linux/device.h>
35 #include <linux/firmware.h>
37 #include <linux/usb.h>
39 #include <net/bluetooth/bluetooth.h>
41 #ifndef CONFIG_BT_HCIBCM203X_DEBUG
48 static int ignore = 0;
50 static struct usb_device_id bcm203x_table[] = {
51 /* Broadcom Blutonium (BCM2033) */
52 { USB_DEVICE(0x0a5c, 0x2033) },
54 { } /* Terminating entry */
57 MODULE_DEVICE_TABLE(usb, bcm203x_table);
59 #define BCM203X_ERROR 0
60 #define BCM203X_RESET 1
61 #define BCM203X_LOAD_MINIDRV 2
62 #define BCM203X_SELECT_MEMORY 3
63 #define BCM203X_CHECK_MEMORY 4
64 #define BCM203X_LOAD_FIRMWARE 5
65 #define BCM203X_CHECK_FIRMWARE 6
67 #define BCM203X_IN_EP 0x81
68 #define BCM203X_OUT_EP 0x02
71 struct usb_device *udev;
75 struct timer_list timer;
78 unsigned char *buffer;
80 unsigned char *fw_data;
85 static void bcm203x_complete(struct urb *urb, struct pt_regs *regs)
87 struct bcm203x_data *data = urb->context;
88 struct usb_device *udev = urb->dev;
91 BT_DBG("udev %p urb %p", udev, urb);
94 BT_ERR("URB failed with status %d", urb->status);
95 data->state = BCM203X_ERROR;
99 switch (data->state) {
100 case BCM203X_LOAD_MINIDRV:
101 memcpy(data->buffer, "#", 1);
103 usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
104 data->buffer, 1, bcm203x_complete, data);
106 data->state = BCM203X_SELECT_MEMORY;
108 mod_timer(&data->timer, jiffies + (HZ / 10));
111 case BCM203X_SELECT_MEMORY:
112 usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
113 data->buffer, 32, bcm203x_complete, data, 1);
115 data->state = BCM203X_CHECK_MEMORY;
117 if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
118 BT_ERR("Can't submit URB");
121 case BCM203X_CHECK_MEMORY:
122 if (data->buffer[0] != '#') {
123 BT_ERR("Memory select failed");
124 data->state = BCM203X_ERROR;
128 data->state = BCM203X_LOAD_FIRMWARE;
130 case BCM203X_LOAD_FIRMWARE:
131 if (data->fw_sent == data->fw_size) {
132 usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
133 data->buffer, 32, bcm203x_complete, data, 1);
135 data->state = BCM203X_CHECK_FIRMWARE;
137 len = min_t(uint, data->fw_size - data->fw_sent, 4096);
139 usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
140 data->fw_data + data->fw_sent, len, bcm203x_complete, data);
142 data->fw_sent += len;
145 if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
146 BT_ERR("Can't submit URB");
149 case BCM203X_CHECK_FIRMWARE:
150 if (data->buffer[0] != '.') {
151 BT_ERR("Firmware loading failed");
152 data->state = BCM203X_ERROR;
156 data->state = BCM203X_RESET;
161 static void bcm203x_timer(unsigned long user_data)
163 struct bcm203x_data *data = (struct bcm203x_data *) user_data;
165 if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
166 BT_ERR("Can't submit URB");
169 static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id)
171 const struct firmware *firmware;
172 struct usb_device *udev = interface_to_usbdev(intf);
173 struct bcm203x_data *data;
176 BT_DBG("intf %p id %p", intf, id);
178 if (ignore || (intf->cur_altsetting->desc.bInterfaceNumber != 0))
181 data = kzalloc(sizeof(*data), GFP_KERNEL);
183 BT_ERR("Can't allocate memory for data structure");
188 data->state = BCM203X_LOAD_MINIDRV;
190 data->urb = usb_alloc_urb(0, GFP_KERNEL);
192 BT_ERR("Can't allocate URB");
197 if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
198 BT_ERR("Mini driver request failed");
199 usb_free_urb(data->urb);
204 BT_DBG("minidrv data %p size %d", firmware->data, firmware->size);
206 size = max_t(uint, firmware->size, 4096);
208 data->buffer = kmalloc(size, GFP_KERNEL);
210 BT_ERR("Can't allocate memory for mini driver");
211 release_firmware(firmware);
212 usb_free_urb(data->urb);
217 memcpy(data->buffer, firmware->data, firmware->size);
219 usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
220 data->buffer, firmware->size, bcm203x_complete, data);
222 release_firmware(firmware);
224 if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
225 BT_ERR("Firmware request failed");
226 usb_free_urb(data->urb);
232 BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
234 data->fw_data = kmalloc(firmware->size, GFP_KERNEL);
235 if (!data->fw_data) {
236 BT_ERR("Can't allocate memory for firmware image");
237 release_firmware(firmware);
238 usb_free_urb(data->urb);
244 memcpy(data->fw_data, firmware->data, firmware->size);
245 data->fw_size = firmware->size;
248 release_firmware(firmware);
250 init_timer(&data->timer);
251 data->timer.function = bcm203x_timer;
252 data->timer.data = (unsigned long) data;
254 usb_set_intfdata(intf, data);
256 mod_timer(&data->timer, jiffies + HZ);
261 static void bcm203x_disconnect(struct usb_interface *intf)
263 struct bcm203x_data *data = usb_get_intfdata(intf);
265 BT_DBG("intf %p", intf);
267 usb_kill_urb(data->urb);
269 usb_set_intfdata(intf, NULL);
271 usb_free_urb(data->urb);
272 kfree(data->fw_data);
277 static struct usb_driver bcm203x_driver = {
279 .probe = bcm203x_probe,
280 .disconnect = bcm203x_disconnect,
281 .id_table = bcm203x_table,
284 static int __init bcm203x_init(void)
288 BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION);
290 err = usb_register(&bcm203x_driver);
292 BT_ERR("Failed to register USB driver");
297 static void __exit bcm203x_exit(void)
299 usb_deregister(&bcm203x_driver);
302 module_init(bcm203x_init);
303 module_exit(bcm203x_exit);
305 module_param(ignore, bool, 0644);
306 MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
308 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
309 MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
310 MODULE_VERSION(VERSION);
311 MODULE_LICENSE("GPL");