]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/bluetooth/ath3k.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
[mirror_ubuntu-artful-kernel.git] / drivers / bluetooth / ath3k.c
1 /*
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
35 static struct usb_device_id ath3k_table[] = {
36 /* Atheros AR3011 */
37 { USB_DEVICE(0x0CF3, 0x3000) },
38 { } /* Terminating entry */
39 };
40
41 MODULE_DEVICE_TABLE(usb, ath3k_table);
42
43 #define USB_REQ_DFU_DNLOAD 1
44 #define BULK_SIZE 4096
45
46 struct ath3k_data {
47 struct usb_device *udev;
48 u8 *fw_data;
49 u32 fw_size;
50 u32 fw_sent;
51 };
52
53 static int ath3k_load_firmware(struct ath3k_data *data,
54 unsigned char *firmware,
55 int count)
56 {
57 u8 *send_buf;
58 int err, pipe, len, size, sent = 0;
59
60 BT_DBG("ath3k %p udev %p", data, data->udev);
61
62 pipe = usb_sndctrlpipe(data->udev, 0);
63
64 if ((usb_control_msg(data->udev, pipe,
65 USB_REQ_DFU_DNLOAD,
66 USB_TYPE_VENDOR, 0, 0,
67 firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) {
68 BT_ERR("Can't change to loading configuration err");
69 return -EBUSY;
70 }
71 sent += 20;
72 count -= 20;
73
74 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC);
75 if (!send_buf) {
76 BT_ERR("Can't allocate memory chunk for firmware");
77 return -ENOMEM;
78 }
79
80 while (count) {
81 size = min_t(uint, count, BULK_SIZE);
82 pipe = usb_sndbulkpipe(data->udev, 0x02);
83 memcpy(send_buf, firmware + sent, size);
84
85 err = usb_bulk_msg(data->udev, pipe, send_buf, size,
86 &len, 3000);
87
88 if (err || (len != size)) {
89 BT_ERR("Error in firmware loading err = %d,"
90 "len = %d, size = %d", err, len, size);
91 goto error;
92 }
93
94 sent += size;
95 count -= size;
96 }
97
98 kfree(send_buf);
99 return 0;
100
101 error:
102 kfree(send_buf);
103 return err;
104 }
105
106 static int ath3k_probe(struct usb_interface *intf,
107 const struct usb_device_id *id)
108 {
109 const struct firmware *firmware;
110 struct usb_device *udev = interface_to_usbdev(intf);
111 struct ath3k_data *data;
112 int size;
113
114 BT_DBG("intf %p id %p", intf, id);
115
116 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
117 return -ENODEV;
118
119 data = kzalloc(sizeof(*data), GFP_KERNEL);
120 if (!data)
121 return -ENOMEM;
122
123 data->udev = udev;
124
125 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) {
126 kfree(data);
127 return -EIO;
128 }
129
130 size = max_t(uint, firmware->size, 4096);
131 data->fw_data = kmalloc(size, GFP_KERNEL);
132 if (!data->fw_data) {
133 release_firmware(firmware);
134 kfree(data);
135 return -ENOMEM;
136 }
137
138 memcpy(data->fw_data, firmware->data, firmware->size);
139 data->fw_size = firmware->size;
140 data->fw_sent = 0;
141 release_firmware(firmware);
142
143 usb_set_intfdata(intf, data);
144 if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) {
145 usb_set_intfdata(intf, NULL);
146 kfree(data->fw_data);
147 kfree(data);
148 return -EIO;
149 }
150
151 return 0;
152 }
153
154 static void ath3k_disconnect(struct usb_interface *intf)
155 {
156 struct ath3k_data *data = usb_get_intfdata(intf);
157
158 BT_DBG("ath3k_disconnect intf %p", intf);
159
160 kfree(data->fw_data);
161 kfree(data);
162 }
163
164 static struct usb_driver ath3k_driver = {
165 .name = "ath3k",
166 .probe = ath3k_probe,
167 .disconnect = ath3k_disconnect,
168 .id_table = ath3k_table,
169 };
170
171 static int __init ath3k_init(void)
172 {
173 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION);
174 return usb_register(&ath3k_driver);
175 }
176
177 static void __exit ath3k_exit(void)
178 {
179 usb_deregister(&ath3k_driver);
180 }
181
182 module_init(ath3k_init);
183 module_exit(ath3k_exit);
184
185 MODULE_AUTHOR("Atheros Communications");
186 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
187 MODULE_VERSION(VERSION);
188 MODULE_LICENSE("GPL");
189 MODULE_FIRMWARE("ath3k-1.fw");