blob: 949ed09c6361130c30c3ebda1bc4db02b00fa4c2 [file] [log] [blame]
Vikram Kandukuri9670d802010-01-06 19:04:15 +05301/*
2 * Copyright (c) 2008-2009 Atheros Communications Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 */
19
20
21#include <linux/module.h>
22#include <linux/kernel.h>
23#include <linux/init.h>
24#include <linux/slab.h>
25#include <linux/types.h>
26#include <linux/errno.h>
27#include <linux/device.h>
28#include <linux/firmware.h>
29#include <linux/usb.h>
30#include <net/bluetooth/bluetooth.h>
31
32#define VERSION "1.0"
33
34
35static struct usb_device_id ath3k_table[] = {
36 /* Atheros AR3011 */
37 { USB_DEVICE(0x0CF3, 0x3000) },
Bala Shanmugambe931122010-11-26 17:35:46 +053038
39 /* Atheros AR3011 with sflash firmware*/
40 { USB_DEVICE(0x0CF3, 0x3002) },
41
Vikram Kandukuri9670d802010-01-06 19:04:15 +053042 { } /* Terminating entry */
43};
44
45MODULE_DEVICE_TABLE(usb, ath3k_table);
46
47#define USB_REQ_DFU_DNLOAD 1
48#define BULK_SIZE 4096
49
50struct ath3k_data {
51 struct usb_device *udev;
52 u8 *fw_data;
53 u32 fw_size;
54 u32 fw_sent;
55};
56
57static int ath3k_load_firmware(struct ath3k_data *data,
58 unsigned char *firmware,
59 int count)
60{
61 u8 *send_buf;
62 int err, pipe, len, size, sent = 0;
63
64 BT_DBG("ath3k %p udev %p", data, data->udev);
65
66 pipe = usb_sndctrlpipe(data->udev, 0);
67
68 if ((usb_control_msg(data->udev, pipe,
69 USB_REQ_DFU_DNLOAD,
70 USB_TYPE_VENDOR, 0, 0,
71 firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) {
72 BT_ERR("Can't change to loading configuration err");
73 return -EBUSY;
74 }
75 sent += 20;
76 count -= 20;
77
78 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC);
79 if (!send_buf) {
80 BT_ERR("Can't allocate memory chunk for firmware");
81 return -ENOMEM;
82 }
83
84 while (count) {
85 size = min_t(uint, count, BULK_SIZE);
86 pipe = usb_sndbulkpipe(data->udev, 0x02);
87 memcpy(send_buf, firmware + sent, size);
88
89 err = usb_bulk_msg(data->udev, pipe, send_buf, size,
90 &len, 3000);
91
92 if (err || (len != size)) {
93 BT_ERR("Error in firmware loading err = %d,"
94 "len = %d, size = %d", err, len, size);
95 goto error;
96 }
97
98 sent += size;
99 count -= size;
100 }
101
102 kfree(send_buf);
103 return 0;
104
105error:
106 kfree(send_buf);
107 return err;
108}
109
110static int ath3k_probe(struct usb_interface *intf,
111 const struct usb_device_id *id)
112{
113 const struct firmware *firmware;
114 struct usb_device *udev = interface_to_usbdev(intf);
115 struct ath3k_data *data;
116 int size;
117
118 BT_DBG("intf %p id %p", intf, id);
119
120 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
121 return -ENODEV;
122
123 data = kzalloc(sizeof(*data), GFP_KERNEL);
124 if (!data)
125 return -ENOMEM;
126
127 data->udev = udev;
128
129 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) {
130 kfree(data);
131 return -EIO;
132 }
133
134 size = max_t(uint, firmware->size, 4096);
135 data->fw_data = kmalloc(size, GFP_KERNEL);
136 if (!data->fw_data) {
137 release_firmware(firmware);
138 kfree(data);
139 return -ENOMEM;
140 }
141
142 memcpy(data->fw_data, firmware->data, firmware->size);
143 data->fw_size = firmware->size;
144 data->fw_sent = 0;
145 release_firmware(firmware);
146
147 usb_set_intfdata(intf, data);
148 if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) {
149 usb_set_intfdata(intf, NULL);
Dan Carpenter10f78912010-02-08 08:43:17 +0300150 kfree(data->fw_data);
151 kfree(data);
Vikram Kandukuri9670d802010-01-06 19:04:15 +0530152 return -EIO;
153 }
154
155 return 0;
156}
157
158static void ath3k_disconnect(struct usb_interface *intf)
159{
160 struct ath3k_data *data = usb_get_intfdata(intf);
161
162 BT_DBG("ath3k_disconnect intf %p", intf);
163
164 kfree(data->fw_data);
165 kfree(data);
166}
167
168static struct usb_driver ath3k_driver = {
169 .name = "ath3k",
170 .probe = ath3k_probe,
171 .disconnect = ath3k_disconnect,
172 .id_table = ath3k_table,
173};
174
175static int __init ath3k_init(void)
176{
177 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION);
178 return usb_register(&ath3k_driver);
179}
180
181static void __exit ath3k_exit(void)
182{
183 usb_deregister(&ath3k_driver);
184}
185
186module_init(ath3k_init);
187module_exit(ath3k_exit);
188
189MODULE_AUTHOR("Atheros Communications");
190MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
191MODULE_VERSION(VERSION);
192MODULE_LICENSE("GPL");
193MODULE_FIRMWARE("ath3k-1.fw");