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9670d80a VK |
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) }, | |
be93112a BS |
38 | |
39 | /* Atheros AR3011 with sflash firmware*/ | |
40 | { USB_DEVICE(0x0CF3, 0x3002) }, | |
41 | ||
9670d80a VK |
42 | { } /* Terminating entry */ |
43 | }; | |
44 | ||
45 | MODULE_DEVICE_TABLE(usb, ath3k_table); | |
46 | ||
47 | #define USB_REQ_DFU_DNLOAD 1 | |
48 | #define BULK_SIZE 4096 | |
49 | ||
86e09287 AH |
50 | static int ath3k_load_firmware(struct usb_device *udev, |
51 | const struct firmware *firmware) | |
9670d80a VK |
52 | { |
53 | u8 *send_buf; | |
54 | int err, pipe, len, size, sent = 0; | |
86e09287 | 55 | int count = firmware->size; |
9670d80a | 56 | |
86e09287 | 57 | BT_DBG("udev %p", udev); |
9670d80a | 58 | |
86e09287 | 59 | pipe = usb_sndctrlpipe(udev, 0); |
9670d80a | 60 | |
86e09287 AH |
61 | send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); |
62 | if (!send_buf) { | |
63 | BT_ERR("Can't allocate memory chunk for firmware"); | |
64 | return -ENOMEM; | |
65 | } | |
66 | ||
67 | memcpy(send_buf, firmware->data, 20); | |
68 | if ((err = usb_control_msg(udev, pipe, | |
9670d80a VK |
69 | USB_REQ_DFU_DNLOAD, |
70 | USB_TYPE_VENDOR, 0, 0, | |
86e09287 | 71 | send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { |
9670d80a | 72 | BT_ERR("Can't change to loading configuration err"); |
86e09287 | 73 | goto error; |
9670d80a VK |
74 | } |
75 | sent += 20; | |
76 | count -= 20; | |
77 | ||
9670d80a VK |
78 | while (count) { |
79 | size = min_t(uint, count, BULK_SIZE); | |
86e09287 AH |
80 | pipe = usb_sndbulkpipe(udev, 0x02); |
81 | memcpy(send_buf, firmware->data + sent, size); | |
9670d80a | 82 | |
86e09287 | 83 | err = usb_bulk_msg(udev, pipe, send_buf, size, |
9670d80a VK |
84 | &len, 3000); |
85 | ||
86 | if (err || (len != size)) { | |
87 | BT_ERR("Error in firmware loading err = %d," | |
88 | "len = %d, size = %d", err, len, size); | |
89 | goto error; | |
90 | } | |
91 | ||
92 | sent += size; | |
93 | count -= size; | |
94 | } | |
95 | ||
96 | kfree(send_buf); | |
97 | return 0; | |
98 | ||
99 | error: | |
100 | kfree(send_buf); | |
101 | return err; | |
102 | } | |
103 | ||
104 | static int ath3k_probe(struct usb_interface *intf, | |
105 | const struct usb_device_id *id) | |
106 | { | |
107 | const struct firmware *firmware; | |
108 | struct usb_device *udev = interface_to_usbdev(intf); | |
9670d80a VK |
109 | |
110 | BT_DBG("intf %p id %p", intf, id); | |
111 | ||
112 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) | |
113 | return -ENODEV; | |
114 | ||
9670d80a | 115 | if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { |
9670d80a VK |
116 | return -EIO; |
117 | } | |
118 | ||
86e09287 | 119 | if (ath3k_load_firmware(udev, firmware)) { |
9670d80a | 120 | release_firmware(firmware); |
9670d80a VK |
121 | return -EIO; |
122 | } | |
86e09287 | 123 | release_firmware(firmware); |
9670d80a VK |
124 | |
125 | return 0; | |
126 | } | |
127 | ||
128 | static void ath3k_disconnect(struct usb_interface *intf) | |
129 | { | |
9670d80a | 130 | BT_DBG("ath3k_disconnect intf %p", intf); |
9670d80a VK |
131 | } |
132 | ||
133 | static struct usb_driver ath3k_driver = { | |
134 | .name = "ath3k", | |
135 | .probe = ath3k_probe, | |
136 | .disconnect = ath3k_disconnect, | |
137 | .id_table = ath3k_table, | |
138 | }; | |
139 | ||
140 | static int __init ath3k_init(void) | |
141 | { | |
142 | BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION); | |
143 | return usb_register(&ath3k_driver); | |
144 | } | |
145 | ||
146 | static void __exit ath3k_exit(void) | |
147 | { | |
148 | usb_deregister(&ath3k_driver); | |
149 | } | |
150 | ||
151 | module_init(ath3k_init); | |
152 | module_exit(ath3k_exit); | |
153 | ||
154 | MODULE_AUTHOR("Atheros Communications"); | |
155 | MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); | |
156 | MODULE_VERSION(VERSION); | |
157 | MODULE_LICENSE("GPL"); | |
158 | MODULE_FIRMWARE("ath3k-1.fw"); |