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Merge branch 'sched/urgent'
[linux-2.6/x86.git] / drivers / bluetooth / ath3k.c
bloba5854735bb2e7882124ad1dc2c1b9c9296c93820
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 #define ATH3K_DNLOAD 0x01
35 #define ATH3K_GETSTATE 0x05
36 #define ATH3K_SET_NORMAL_MODE 0x07
37 #define ATH3K_GETVERSION 0x09
38 #define USB_REG_SWITCH_VID_PID 0x0a
39
40 #define ATH3K_MODE_MASK 0x3F
41 #define ATH3K_NORMAL_MODE 0x0E
42
43 #define ATH3K_PATCH_UPDATE 0x80
44 #define ATH3K_SYSCFG_UPDATE 0x40
45
46 #define ATH3K_XTAL_FREQ_26M 0x00
47 #define ATH3K_XTAL_FREQ_40M 0x01
48 #define ATH3K_XTAL_FREQ_19P2 0x02
49 #define ATH3K_NAME_LEN 0xFF
50
51 struct ath3k_version {
52 unsigned int rom_version;
53 unsigned int build_version;
54 unsigned int ram_version;
55 unsigned char ref_clock;
56 unsigned char reserved[0x07];
57 };
58
59 static struct usb_device_id ath3k_table[] = {
60 /* Atheros AR3011 */
61 { USB_DEVICE(0x0CF3, 0x3000) },
62
63 /* Atheros AR3011 with sflash firmware*/
64 { USB_DEVICE(0x0CF3, 0x3002) },
65 { USB_DEVICE(0x13d3, 0x3304) },
66
67 /* Atheros AR9285 Malbec with sflash firmware */
68 { USB_DEVICE(0x03F0, 0x311D) },
69
70 /* Atheros AR3012 with sflash firmware*/
71 { USB_DEVICE(0x0CF3, 0x3004) },
72
73 /* Atheros AR5BBU12 with sflash firmware */
74 { USB_DEVICE(0x0489, 0xE02C) },
75
76 { } /* Terminating entry */
77 };
78
79 MODULE_DEVICE_TABLE(usb, ath3k_table);
80
81 #define BTUSB_ATH3012 0x80
82 /* This table is to load patch and sysconfig files
83 * for AR3012 */
84 static struct usb_device_id ath3k_blist_tbl[] = {
85
86 /* Atheros AR3012 with sflash firmware*/
87 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
88
89 { } /* Terminating entry */
90 };
91
92 #define USB_REQ_DFU_DNLOAD 1
93 #define BULK_SIZE 4096
94 #define FW_HDR_SIZE 20
95
96 static int ath3k_load_firmware(struct usb_device *udev,
97 const struct firmware *firmware)
98 {
99 u8 *send_buf;
100 int err, pipe, len, size, sent = 0;
101 int count = firmware->size;
102
103 BT_DBG("udev %p", udev);
104
105 pipe = usb_sndctrlpipe(udev, 0);
106
107 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC);
108 if (!send_buf) {
109 BT_ERR("Can't allocate memory chunk for firmware");
110 return -ENOMEM;
111 }
112
113 memcpy(send_buf, firmware->data, 20);
114 if ((err = usb_control_msg(udev, pipe,
115 USB_REQ_DFU_DNLOAD,
116 USB_TYPE_VENDOR, 0, 0,
117 send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) {
118 BT_ERR("Can't change to loading configuration err");
119 goto error;
120 }
121 sent += 20;
122 count -= 20;
123
124 while (count) {
125 size = min_t(uint, count, BULK_SIZE);
126 pipe = usb_sndbulkpipe(udev, 0x02);
127 memcpy(send_buf, firmware->data + sent, size);
128
129 err = usb_bulk_msg(udev, pipe, send_buf, size,
130 &len, 3000);
131
132 if (err || (len != size)) {
133 BT_ERR("Error in firmware loading err = %d,"
134 "len = %d, size = %d", err, len, size);
135 goto error;
136 }
137
138 sent += size;
139 count -= size;
140 }
141
142 error:
143 kfree(send_buf);
144 return err;
145 }
146
147 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
148 {
149 int pipe = 0;
150
151 pipe = usb_rcvctrlpipe(udev, 0);
152 return usb_control_msg(udev, pipe, ATH3K_GETSTATE,
153 USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
154 state, 0x01, USB_CTRL_SET_TIMEOUT);
155 }
156
157 static int ath3k_get_version(struct usb_device *udev,
158 struct ath3k_version *version)
159 {
160 int pipe = 0;
161
162 pipe = usb_rcvctrlpipe(udev, 0);
163 return usb_control_msg(udev, pipe, ATH3K_GETVERSION,
164 USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, version,
165 sizeof(struct ath3k_version),
166 USB_CTRL_SET_TIMEOUT);
167 }
168
169 static int ath3k_load_fwfile(struct usb_device *udev,
170 const struct firmware *firmware)
171 {
172 u8 *send_buf;
173 int err, pipe, len, size, count, sent = 0;
174 int ret;
175
176 count = firmware->size;
177
178 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC);
179 if (!send_buf) {
180 BT_ERR("Can't allocate memory chunk for firmware");
181 return -ENOMEM;
182 }
183
184 size = min_t(uint, count, FW_HDR_SIZE);
185 memcpy(send_buf, firmware->data, size);
186
187 pipe = usb_sndctrlpipe(udev, 0);
188 ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
189 USB_TYPE_VENDOR, 0, 0, send_buf,
190 size, USB_CTRL_SET_TIMEOUT);
191 if (ret < 0) {
192 BT_ERR("Can't change to loading configuration err");
193 kfree(send_buf);
194 return ret;
195 }
196
197 sent += size;
198 count -= size;
199
200 while (count) {
201 size = min_t(uint, count, BULK_SIZE);
202 pipe = usb_sndbulkpipe(udev, 0x02);
203
204 memcpy(send_buf, firmware->data + sent, size);
205
206 err = usb_bulk_msg(udev, pipe, send_buf, size,
207 &len, 3000);
208 if (err || (len != size)) {
209 BT_ERR("Error in firmware loading err = %d,"
210 "len = %d, size = %d", err, len, size);
211 kfree(send_buf);
212 return err;
213 }
214 sent += size;
215 count -= size;
216 }
217
218 kfree(send_buf);
219 return 0;
220 }
221
222 static int ath3k_switch_pid(struct usb_device *udev)
223 {
224 int pipe = 0;
225
226 pipe = usb_sndctrlpipe(udev, 0);
227 return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
228 USB_TYPE_VENDOR, 0, 0,
229 NULL, 0, USB_CTRL_SET_TIMEOUT);
230 }
231
232 static int ath3k_set_normal_mode(struct usb_device *udev)
233 {
234 unsigned char fw_state;
235 int pipe = 0, ret;
236
237 ret = ath3k_get_state(udev, &fw_state);
238 if (ret < 0) {
239 BT_ERR("Can't get state to change to normal mode err");
240 return ret;
241 }
242
243 if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
244 BT_DBG("firmware was already in normal mode");
245 return 0;
246 }
247
248 pipe = usb_sndctrlpipe(udev, 0);
249 return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
250 USB_TYPE_VENDOR, 0, 0,
251 NULL, 0, USB_CTRL_SET_TIMEOUT);
252 }
253
254 static int ath3k_load_patch(struct usb_device *udev)
255 {
256 unsigned char fw_state;
257 char filename[ATH3K_NAME_LEN] = {0};
258 const struct firmware *firmware;
259 struct ath3k_version fw_version, pt_version;
260 int ret;
261
262 ret = ath3k_get_state(udev, &fw_state);
263 if (ret < 0) {
264 BT_ERR("Can't get state to change to load ram patch err");
265 return ret;
266 }
267
268 if (fw_state & ATH3K_PATCH_UPDATE) {
269 BT_DBG("Patch was already downloaded");
270 return 0;
271 }
272
273 ret = ath3k_get_version(udev, &fw_version);
274 if (ret < 0) {
275 BT_ERR("Can't get version to change to load ram patch err");
276 return ret;
277 }
278
279 snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
280 fw_version.rom_version);
281
282 ret = request_firmware(&firmware, filename, &udev->dev);
283 if (ret < 0) {
284 BT_ERR("Patch file not found %s", filename);
285 return ret;
286 }
287
288 pt_version.rom_version = *(int *)(firmware->data + firmware->size - 8);
289 pt_version.build_version = *(int *)
290 (firmware->data + firmware->size - 4);
291
292 if ((pt_version.rom_version != fw_version.rom_version) ||
293 (pt_version.build_version <= fw_version.build_version)) {
294 BT_ERR("Patch file version did not match with firmware");
295 release_firmware(firmware);
296 return -EINVAL;
297 }
298
299 ret = ath3k_load_fwfile(udev, firmware);
300 release_firmware(firmware);
301
302 return ret;
303 }
304
305 static int ath3k_load_syscfg(struct usb_device *udev)
306 {
307 unsigned char fw_state;
308 char filename[ATH3K_NAME_LEN] = {0};
309 const struct firmware *firmware;
310 struct ath3k_version fw_version;
311 int clk_value, ret;
312
313 ret = ath3k_get_state(udev, &fw_state);
314 if (ret < 0) {
315 BT_ERR("Can't get state to change to load configration err");
316 return -EBUSY;
317 }
318
319 ret = ath3k_get_version(udev, &fw_version);
320 if (ret < 0) {
321 BT_ERR("Can't get version to change to load ram patch err");
322 return ret;
323 }
324
325 switch (fw_version.ref_clock) {
326
327 case ATH3K_XTAL_FREQ_26M:
328 clk_value = 26;
329 break;
330 case ATH3K_XTAL_FREQ_40M:
331 clk_value = 40;
332 break;
333 case ATH3K_XTAL_FREQ_19P2:
334 clk_value = 19;
335 break;
336 default:
337 clk_value = 0;
338 break;
339 }
340
341 snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
342 fw_version.rom_version, clk_value, ".dfu");
343
344 ret = request_firmware(&firmware, filename, &udev->dev);
345 if (ret < 0) {
346 BT_ERR("Configuration file not found %s", filename);
347 return ret;
348 }
349
350 ret = ath3k_load_fwfile(udev, firmware);
351 release_firmware(firmware);
352
353 return ret;
354 }
355
356 static int ath3k_probe(struct usb_interface *intf,
357 const struct usb_device_id *id)
358 {
359 const struct firmware *firmware;
360 struct usb_device *udev = interface_to_usbdev(intf);
361 int ret;
362
363 BT_DBG("intf %p id %p", intf, id);
364
365 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
366 return -ENODEV;
367
368 /* match device ID in ath3k blacklist table */
369 if (!id->driver_info) {
370 const struct usb_device_id *match;
371 match = usb_match_id(intf, ath3k_blist_tbl);
372 if (match)
373 id = match;
374 }
375
376 /* load patch and sysconfig files for AR3012 */
377 if (id->driver_info & BTUSB_ATH3012) {
378
379 /* New firmware with patch and sysconfig files already loaded */
380 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
381 return -ENODEV;
382
383 ret = ath3k_load_patch(udev);
384 if (ret < 0) {
385 BT_ERR("Loading patch file failed");
386 return ret;
387 }
388 ret = ath3k_load_syscfg(udev);
389 if (ret < 0) {
390 BT_ERR("Loading sysconfig file failed");
391 return ret;
392 }
393 ret = ath3k_set_normal_mode(udev);
394 if (ret < 0) {
395 BT_ERR("Set normal mode failed");
396 return ret;
397 }
398 ath3k_switch_pid(udev);
399 return 0;
400 }
401
402 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) {
403 BT_ERR("Error loading firmware");
404 return -EIO;
405 }
406
407 ret = ath3k_load_firmware(udev, firmware);
408 release_firmware(firmware);
409
410 return ret;
411 }
412
413 static void ath3k_disconnect(struct usb_interface *intf)
414 {
415 BT_DBG("ath3k_disconnect intf %p", intf);
416 }
417
418 static struct usb_driver ath3k_driver = {
419 .name = "ath3k",
420 .probe = ath3k_probe,
421 .disconnect = ath3k_disconnect,
422 .id_table = ath3k_table,
423 };
424
425 static int __init ath3k_init(void)
426 {
427 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION);
428 return usb_register(&ath3k_driver);
429 }
430
431 static void __exit ath3k_exit(void)
432 {
433 usb_deregister(&ath3k_driver);
434 }
435
436 module_init(ath3k_init);
437 module_exit(ath3k_exit);
438
439 MODULE_AUTHOR("Atheros Communications");
440 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
441 MODULE_VERSION(VERSION);
442 MODULE_LICENSE("GPL");
443 MODULE_FIRMWARE("ath3k-1.fw");
x86 "subsystem" repository