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checkpatch: fix left brace warning
[deliverable/linux.git] / drivers / bluetooth / btbcm.c
1 /*
2 *
3 * Bluetooth support for Broadcom devices
4 *
5 * Copyright (C) 2015 Intel Corporation
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/firmware.h>
26 #include <asm/unaligned.h>
27
28 #include <net/bluetooth/bluetooth.h>
29 #include <net/bluetooth/hci_core.h>
30
31 #include "btbcm.h"
32
33 #define VERSION "0.1"
34
35 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
36 #define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
37 #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
38
39 int btbcm_check_bdaddr(struct hci_dev *hdev)
40 {
41 struct hci_rp_read_bd_addr *bda;
42 struct sk_buff *skb;
43
44 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
45 HCI_INIT_TIMEOUT);
46 if (IS_ERR(skb)) {
47 int err = PTR_ERR(skb);
48 BT_ERR("%s: BCM: Reading device address failed (%d)",
49 hdev->name, err);
50 return err;
51 }
52
53 if (skb->len != sizeof(*bda)) {
54 BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
55 kfree_skb(skb);
56 return -EIO;
57 }
58
59 bda = (struct hci_rp_read_bd_addr *)skb->data;
60
61 /* Check if the address indicates a controller with either an
62 * invalid or default address. In both cases the device needs
63 * to be marked as not having a valid address.
64 *
65 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
66 * with no configured address.
67 *
68 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
69 * with waiting for configuration state.
70 *
71 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
72 * with waiting for configuration state.
73 */
74 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
75 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
76 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
77 BT_INFO("%s: BCM: Using default device address (%pMR)",
78 hdev->name, &bda->bdaddr);
79 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
80 }
81
82 kfree_skb(skb);
83
84 return 0;
85 }
86 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
87
88 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
89 {
90 struct sk_buff *skb;
91 int err;
92
93 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
94 if (IS_ERR(skb)) {
95 err = PTR_ERR(skb);
96 BT_ERR("%s: BCM: Change address command failed (%d)",
97 hdev->name, err);
98 return err;
99 }
100 kfree_skb(skb);
101
102 return 0;
103 }
104 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
105
106 int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
107 {
108 const struct hci_command_hdr *cmd;
109 const u8 *fw_ptr;
110 size_t fw_size;
111 struct sk_buff *skb;
112 u16 opcode;
113 int err = 0;
114
115 /* Start Download */
116 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
117 if (IS_ERR(skb)) {
118 err = PTR_ERR(skb);
119 BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
120 hdev->name, err);
121 goto done;
122 }
123 kfree_skb(skb);
124
125 /* 50 msec delay after Download Minidrv completes */
126 msleep(50);
127
128 fw_ptr = fw->data;
129 fw_size = fw->size;
130
131 while (fw_size >= sizeof(*cmd)) {
132 const u8 *cmd_param;
133
134 cmd = (struct hci_command_hdr *)fw_ptr;
135 fw_ptr += sizeof(*cmd);
136 fw_size -= sizeof(*cmd);
137
138 if (fw_size < cmd->plen) {
139 BT_ERR("%s: BCM: Patch is corrupted", hdev->name);
140 err = -EINVAL;
141 goto done;
142 }
143
144 cmd_param = fw_ptr;
145 fw_ptr += cmd->plen;
146 fw_size -= cmd->plen;
147
148 opcode = le16_to_cpu(cmd->opcode);
149
150 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
151 HCI_INIT_TIMEOUT);
152 if (IS_ERR(skb)) {
153 err = PTR_ERR(skb);
154 BT_ERR("%s: BCM: Patch command %04x failed (%d)",
155 hdev->name, opcode, err);
156 goto done;
157 }
158 kfree_skb(skb);
159 }
160
161 /* 250 msec delay after Launch Ram completes */
162 msleep(250);
163
164 done:
165 return err;
166 }
167 EXPORT_SYMBOL(btbcm_patchram);
168
169 static int btbcm_reset(struct hci_dev *hdev)
170 {
171 struct sk_buff *skb;
172
173 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
174 if (IS_ERR(skb)) {
175 int err = PTR_ERR(skb);
176 BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
177 return err;
178 }
179 kfree_skb(skb);
180
181 return 0;
182 }
183
184 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
185 {
186 struct sk_buff *skb;
187
188 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
189 HCI_INIT_TIMEOUT);
190 if (IS_ERR(skb)) {
191 BT_ERR("%s: BCM: Reading local version info failed (%ld)",
192 hdev->name, PTR_ERR(skb));
193 return skb;
194 }
195
196 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
197 BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
198 kfree_skb(skb);
199 return ERR_PTR(-EIO);
200 }
201
202 return skb;
203 }
204
205 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
206 {
207 struct sk_buff *skb;
208
209 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
210 if (IS_ERR(skb)) {
211 BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
212 hdev->name, PTR_ERR(skb));
213 return skb;
214 }
215
216 if (skb->len != 7) {
217 BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
218 kfree_skb(skb);
219 return ERR_PTR(-EIO);
220 }
221
222 return skb;
223 }
224
225 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
226 {
227 struct sk_buff *skb;
228
229 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
230 if (IS_ERR(skb)) {
231 BT_ERR("%s: BCM: Read USB product info failed (%ld)",
232 hdev->name, PTR_ERR(skb));
233 return skb;
234 }
235
236 if (skb->len != 5) {
237 BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
238 kfree_skb(skb);
239 return ERR_PTR(-EIO);
240 }
241
242 return skb;
243 }
244
245 static const struct {
246 u16 subver;
247 const char *name;
248 } bcm_uart_subver_table[] = {
249 { 0x4103, "BCM4330B1" }, /* 002.001.003 */
250 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
251 { 0x4406, "BCM4324B3" }, /* 002.004.006 */
252 { 0x610c, "BCM4354" }, /* 003.001.012 */
253 { }
254 };
255
256 int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
257 {
258 u16 subver, rev;
259 const char *hw_name = NULL;
260 struct sk_buff *skb;
261 struct hci_rp_read_local_version *ver;
262 int i, err;
263
264 /* Reset */
265 err = btbcm_reset(hdev);
266 if (err)
267 return err;
268
269 /* Read Local Version Info */
270 skb = btbcm_read_local_version(hdev);
271 if (IS_ERR(skb))
272 return PTR_ERR(skb);
273
274 ver = (struct hci_rp_read_local_version *)skb->data;
275 rev = le16_to_cpu(ver->hci_rev);
276 subver = le16_to_cpu(ver->lmp_subver);
277 kfree_skb(skb);
278
279 /* Read Verbose Config Version Info */
280 skb = btbcm_read_verbose_config(hdev);
281 if (IS_ERR(skb))
282 return PTR_ERR(skb);
283
284 BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
285 kfree_skb(skb);
286
287 switch ((rev & 0xf000) >> 12) {
288 case 0:
289 case 1:
290 case 3:
291 for (i = 0; bcm_uart_subver_table[i].name; i++) {
292 if (subver == bcm_uart_subver_table[i].subver) {
293 hw_name = bcm_uart_subver_table[i].name;
294 break;
295 }
296 }
297
298 snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
299 break;
300 default:
301 return 0;
302 }
303
304 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
305 hw_name ? : "BCM", (subver & 0x7000) >> 13,
306 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
307
308 return 0;
309 }
310 EXPORT_SYMBOL_GPL(btbcm_initialize);
311
312 int btbcm_finalize(struct hci_dev *hdev)
313 {
314 struct sk_buff *skb;
315 struct hci_rp_read_local_version *ver;
316 u16 subver, rev;
317 int err;
318
319 /* Reset */
320 err = btbcm_reset(hdev);
321 if (err)
322 return err;
323
324 /* Read Local Version Info */
325 skb = btbcm_read_local_version(hdev);
326 if (IS_ERR(skb))
327 return PTR_ERR(skb);
328
329 ver = (struct hci_rp_read_local_version *)skb->data;
330 rev = le16_to_cpu(ver->hci_rev);
331 subver = le16_to_cpu(ver->lmp_subver);
332 kfree_skb(skb);
333
334 BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
335 (subver & 0x7000) >> 13, (subver & 0x1f00) >> 8,
336 (subver & 0x00ff), rev & 0x0fff);
337
338 btbcm_check_bdaddr(hdev);
339
340 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
341
342 return 0;
343 }
344 EXPORT_SYMBOL_GPL(btbcm_finalize);
345
346 static const struct {
347 u16 subver;
348 const char *name;
349 } bcm_usb_subver_table[] = {
350 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
351 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
352 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
353 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
354 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
355 { 0x230f, "BCM4354A2" }, /* 001.003.015 */
356 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
357 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
358 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
359 { 0x610c, "BCM4354" }, /* 003.001.012 */
360 { }
361 };
362
363 int btbcm_setup_patchram(struct hci_dev *hdev)
364 {
365 char fw_name[64];
366 const struct firmware *fw;
367 u16 subver, rev, pid, vid;
368 const char *hw_name = NULL;
369 struct sk_buff *skb;
370 struct hci_rp_read_local_version *ver;
371 int i, err;
372
373 /* Reset */
374 err = btbcm_reset(hdev);
375 if (err)
376 return err;
377
378 /* Read Local Version Info */
379 skb = btbcm_read_local_version(hdev);
380 if (IS_ERR(skb))
381 return PTR_ERR(skb);
382
383 ver = (struct hci_rp_read_local_version *)skb->data;
384 rev = le16_to_cpu(ver->hci_rev);
385 subver = le16_to_cpu(ver->lmp_subver);
386 kfree_skb(skb);
387
388 /* Read Verbose Config Version Info */
389 skb = btbcm_read_verbose_config(hdev);
390 if (IS_ERR(skb))
391 return PTR_ERR(skb);
392
393 BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
394 kfree_skb(skb);
395
396 switch ((rev & 0xf000) >> 12) {
397 case 0:
398 case 3:
399 for (i = 0; bcm_uart_subver_table[i].name; i++) {
400 if (subver == bcm_uart_subver_table[i].subver) {
401 hw_name = bcm_uart_subver_table[i].name;
402 break;
403 }
404 }
405
406 snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
407 hw_name ? : "BCM");
408 break;
409 case 1:
410 case 2:
411 /* Read USB Product Info */
412 skb = btbcm_read_usb_product(hdev);
413 if (IS_ERR(skb))
414 return PTR_ERR(skb);
415
416 vid = get_unaligned_le16(skb->data + 1);
417 pid = get_unaligned_le16(skb->data + 3);
418 kfree_skb(skb);
419
420 for (i = 0; bcm_usb_subver_table[i].name; i++) {
421 if (subver == bcm_usb_subver_table[i].subver) {
422 hw_name = bcm_usb_subver_table[i].name;
423 break;
424 }
425 }
426
427 snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
428 hw_name ? : "BCM", vid, pid);
429 break;
430 default:
431 return 0;
432 }
433
434 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
435 hw_name ? : "BCM", (subver & 0x7000) >> 13,
436 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
437
438 err = request_firmware(&fw, fw_name, &hdev->dev);
439 if (err < 0) {
440 BT_INFO("%s: BCM: Patch %s not found", hdev->name, fw_name);
441 return 0;
442 }
443
444 btbcm_patchram(hdev, fw);
445
446 release_firmware(fw);
447
448 /* Reset */
449 err = btbcm_reset(hdev);
450 if (err)
451 return err;
452
453 /* Read Local Version Info */
454 skb = btbcm_read_local_version(hdev);
455 if (IS_ERR(skb))
456 return PTR_ERR(skb);
457
458 ver = (struct hci_rp_read_local_version *)skb->data;
459 rev = le16_to_cpu(ver->hci_rev);
460 subver = le16_to_cpu(ver->lmp_subver);
461 kfree_skb(skb);
462
463 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
464 hw_name ? : "BCM", (subver & 0x7000) >> 13,
465 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
466
467 btbcm_check_bdaddr(hdev);
468
469 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
470
471 return 0;
472 }
473 EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
474
475 int btbcm_setup_apple(struct hci_dev *hdev)
476 {
477 struct sk_buff *skb;
478
479 /* Read Verbose Config Version Info */
480 skb = btbcm_read_verbose_config(hdev);
481 if (!IS_ERR(skb)) {
482 BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
483 get_unaligned_le16(skb->data + 5));
484 kfree_skb(skb);
485 }
486
487 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
488
489 return 0;
490 }
491 EXPORT_SYMBOL_GPL(btbcm_setup_apple);
492
493 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
494 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
495 MODULE_VERSION(VERSION);
496 MODULE_LICENSE("GPL");
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