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Merge tag 'rpmsg-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc...
[linux-2.6-block.git] / drivers / bluetooth / btbcm.c
CommitLineData
1a59d1b8 1// SPDX-License-Identifier: GPL-2.0-or-later
4fba30f0
MH		 2/*
3 *
4 * Bluetooth support for Broadcom devices
5 *
6 * Copyright (C) 2015 Intel Corporation
4fba30f0
MH		 7 */
8
0d218c36 9#include <linux/efi.h>
4fba30f0 10#include <linux/module.h>
1c8ba6d0 11#include <linux/firmware.h>
801b4c02 12#include <linux/dmi.h>
63fac334 13#include <linux/of.h>
1c8ba6d0 14#include <asm/unaligned.h>
4fba30f0
MH		 15
16#include <net/bluetooth/bluetooth.h>
17#include <net/bluetooth/hci_core.h>
18
19#include "btbcm.h"
20
21#define VERSION "0.1"
22
23#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
92ffe0db 24#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
300926b1 25#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
0697607a 26#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
47e90f6b 27#define BDADDR_BCM43430A1 (&(bdaddr_t) {{0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa}})
a8f3b941 28#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
4a546ec3 29#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
b8dc6476 30#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
52c8c7a7 31#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
50357261 32#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
4fba30f0 33
0287c5d8 34#define BCM_FW_NAME_LEN 64
63fac334 35#define BCM_FW_NAME_COUNT_MAX 4
74530a63
HG		 36/* For kmalloc-ing the fw-name array instead of putting it on the stack */
37typedef char bcm_fw_name[BCM_FW_NAME_LEN];
0287c5d8 38
0d218c36
HG		 39#ifdef CONFIG_EFI
40static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
41{
42 efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f,
43 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13);
44 bdaddr_t efi_bdaddr, bdaddr;
45 efi_status_t status;
46 unsigned long len;
47 int ret;
48
49 if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
50 return -EOPNOTSUPP;
51
52 len = sizeof(efi_bdaddr);
53 status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr);
54 if (status != EFI_SUCCESS)
55 return -ENXIO;
56
57 if (len != sizeof(efi_bdaddr))
58 return -EIO;
59
60 baswap(&bdaddr, &efi_bdaddr);
61
62 ret = btbcm_set_bdaddr(hdev, &bdaddr);
63 if (ret)
64 return ret;
65
66 bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr);
67 return 0;
68}
69#else
70static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
71{
72 return -EOPNOTSUPP;
73}
74#endif
75
4fba30f0
MH		 76int btbcm_check_bdaddr(struct hci_dev *hdev)
77{
78 struct hci_rp_read_bd_addr *bda;
79 struct sk_buff *skb;
80
81 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
82 HCI_INIT_TIMEOUT);
83 if (IS_ERR(skb)) {
84 int err = PTR_ERR(skb);
dde8010b 85
2064ee33 86 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
4fba30f0
MH		 87 return err;
88 }
89
90 if (skb->len != sizeof(*bda)) {
2064ee33 91 bt_dev_err(hdev, "BCM: Device address length mismatch");
4fba30f0
MH		 92 kfree_skb(skb);
93 return -EIO;
94 }
95
96 bda = (struct hci_rp_read_bd_addr *)skb->data;
4fba30f0 97
a8f3b941
FD		 98 /* Check if the address indicates a controller with either an
99 * invalid or default address. In both cases the device needs
100 * to be marked as not having a valid address.
101 *
102 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
4fba30f0 103 * with no configured address.
a8f3b941 104 *
92ffe0db
MR		 105 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
106 * with no configured address.
107 *
300926b1
SG		 108 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
109 * with no configured address.
110 *
a8f3b941
FD		 111 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
112 * with waiting for configuration state.
4a546ec3
FD		 113 *
114 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
115 * with waiting for configuration state.
0697607a
CYT		 116 *
117 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
118 * with no configured address.
47e90f6b
MR		 119 *
120 * The address AA:AA:AA:AA:AA:AA indicates a BCM43430A1 controller
121 * with no configured address.
4fba30f0 122 */
a8f3b941 123 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
92ffe0db 124 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
300926b1 125 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
4a546ec3 126 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
0697607a 127 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
b8dc6476 128 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
52c8c7a7 129 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
50357261 130 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
47e90f6b 131 !bacmp(&bda->bdaddr, BDADDR_BCM43430A1) ||
50357261 132 !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
0d218c36
HG		 133 /* Try falling back to BDADDR EFI variable */
134 if (btbcm_set_bdaddr_from_efi(hdev) != 0) {
135 bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
136 &bda->bdaddr);
137 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
138 }
4fba30f0
MH		 139 }
140
141 kfree_skb(skb);
142
143 return 0;
144}
145EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
146
147int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
148{
149 struct sk_buff *skb;
150 int err;
151
152 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
153 if (IS_ERR(skb)) {
154 err = PTR_ERR(skb);
2064ee33 155 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
4fba30f0
MH		 156 return err;
157 }
158 kfree_skb(skb);
159
160 return 0;
161}
162EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
163
52837990
APS		 164int btbcm_read_pcm_int_params(struct hci_dev *hdev,
165 struct bcm_set_pcm_int_params *params)
166{
167 struct sk_buff *skb;
168 int err = 0;
169
170 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
171 if (IS_ERR(skb)) {
172 err = PTR_ERR(skb);
173 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
174 return err;
175 }
176
177 if (skb->len != 6 || skb->data[0]) {
178 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
179 kfree_skb(skb);
180 return -EIO;
181 }
182
183 if (params)
184 memcpy(params, skb->data + 1, 5);
185
186 kfree_skb(skb);
187
188 return 0;
189}
190EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
191
192int btbcm_write_pcm_int_params(struct hci_dev *hdev,
193 const struct bcm_set_pcm_int_params *params)
194{
195 struct sk_buff *skb;
196 int err;
197
198 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
199 if (IS_ERR(skb)) {
200 err = PTR_ERR(skb);
201 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
202 return err;
203 }
204 kfree_skb(skb);
205
206 return 0;
207}
208EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
209
18aeb444 210int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
50862ee5
MH		 211{
212 const struct hci_command_hdr *cmd;
50862ee5
MH		 213 const u8 *fw_ptr;
214 size_t fw_size;
215 struct sk_buff *skb;
216 u16 opcode;
18aeb444 217 int err = 0;
50862ee5
MH		 218
219 /* Start Download */
220 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
221 if (IS_ERR(skb)) {
222 err = PTR_ERR(skb);
2064ee33
MH		 223 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
224 err);
50862ee5
MH		 225 goto done;
226 }
227 kfree_skb(skb);
228
229 /* 50 msec delay after Download Minidrv completes */
230 msleep(50);
231
232 fw_ptr = fw->data;
233 fw_size = fw->size;
234
235 while (fw_size >= sizeof(*cmd)) {
236 const u8 *cmd_param;
237
238 cmd = (struct hci_command_hdr *)fw_ptr;
239 fw_ptr += sizeof(*cmd);
240 fw_size -= sizeof(*cmd);
241
242 if (fw_size < cmd->plen) {
2064ee33 243 bt_dev_err(hdev, "BCM: Patch is corrupted");
50862ee5
MH		 244 err = -EINVAL;
245 goto done;
246 }
247
248 cmd_param = fw_ptr;
249 fw_ptr += cmd->plen;
250 fw_size -= cmd->plen;
251
252 opcode = le16_to_cpu(cmd->opcode);
253
254 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
255 HCI_INIT_TIMEOUT);
256 if (IS_ERR(skb)) {
257 err = PTR_ERR(skb);
2064ee33
MH		 258 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
259 opcode, err);
50862ee5
MH		 260 goto done;
261 }
262 kfree_skb(skb);
263 }
264
265 /* 250 msec delay after Launch Ram completes */
266 msleep(250);
267
268done:
50862ee5
MH		 269 return err;
270}
271EXPORT_SYMBOL(btbcm_patchram);
272
1c8ba6d0
MH		 273static int btbcm_reset(struct hci_dev *hdev)
274{
275 struct sk_buff *skb;
276
277 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
278 if (IS_ERR(skb)) {
279 int err = PTR_ERR(skb);
dde8010b 280
2064ee33 281 bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
1c8ba6d0
MH		 282 return err;
283 }
284 kfree_skb(skb);
285
3af3a594
WJS		 286 /* 100 msec delay for module to complete reset process */
287 msleep(100);
288
1c8ba6d0
MH		 289 return 0;
290}
291
9bc63ca0
MH		 292static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
293{
294 struct sk_buff *skb;
295
296 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
297 HCI_INIT_TIMEOUT);
298 if (IS_ERR(skb)) {
2064ee33
MH		 299 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
300 PTR_ERR(skb));
9bc63ca0
MH		 301 return skb;
302 }
303
304 if (skb->len != sizeof(struct hci_rp_read_local_name)) {
2064ee33 305 bt_dev_err(hdev, "BCM: Local name length mismatch");
9bc63ca0
MH		 306 kfree_skb(skb);
307 return ERR_PTR(-EIO);
308 }
309
310 return skb;
311}
312
1c8ba6d0
MH		 313static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
314{
315 struct sk_buff *skb;
316
317 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
318 HCI_INIT_TIMEOUT);
319 if (IS_ERR(skb)) {
2064ee33
MH		 320 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
321 PTR_ERR(skb));
1c8ba6d0
MH		 322 return skb;
323 }
324
325 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
2064ee33 326 bt_dev_err(hdev, "BCM: Local version length mismatch");
1c8ba6d0
MH		 327 kfree_skb(skb);
328 return ERR_PTR(-EIO);
329 }
330
331 return skb;
332}
333
334static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
335{
336 struct sk_buff *skb;
337
338 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
339 if (IS_ERR(skb)) {
2064ee33
MH		 340 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
341 PTR_ERR(skb));
1c8ba6d0
MH		 342 return skb;
343 }
344
345 if (skb->len != 7) {
2064ee33 346 bt_dev_err(hdev, "BCM: Verbose config length mismatch");
1c8ba6d0
MH		 347 kfree_skb(skb);
348 return ERR_PTR(-EIO);
349 }
350
351 return skb;
352}
353
4284ecbe
MH		 354static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
355{
356 struct sk_buff *skb;
357
358 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
359 if (IS_ERR(skb)) {
2064ee33
MH		 360 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
361 PTR_ERR(skb));
4284ecbe
MH		 362 return skb;
363 }
364
365 if (skb->len != 9) {
2064ee33 366 bt_dev_err(hdev, "BCM: Controller features length mismatch");
4284ecbe
MH		 367 kfree_skb(skb);
368 return ERR_PTR(-EIO);
369 }
370
371 return skb;
372}
373
1c8ba6d0
MH		 374static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
375{
376 struct sk_buff *skb;
377
378 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
379 if (IS_ERR(skb)) {
2064ee33
MH		 380 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
381 PTR_ERR(skb));
1c8ba6d0
MH		 382 return skb;
383 }
384
385 if (skb->len != 5) {
2064ee33 386 bt_dev_err(hdev, "BCM: USB product length mismatch");
1c8ba6d0
MH		 387 kfree_skb(skb);
388 return ERR_PTR(-EIO);
389 }
390
391 return skb;
392}
393
801b4c02
AG		 394static const struct dmi_system_id disable_broken_read_transmit_power[] = {
395 {
396 .matches = {
397 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
398 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"),
399 },
400 },
401 {
402 .matches = {
403 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
404 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"),
405 },
406 },
407 {
408 .matches = {
409 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
410 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"),
411 },
412 },
3318ae23
AG		 413 {
414 .matches = {
415 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
416 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"),
417 },
418 },
419 {
420 .matches = {
421 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
422 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"),
423 },
424 },
801b4c02
AG		 425 {
426 .matches = {
427 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
428 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"),
429 },
430 },
431 {
432 .matches = {
433 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
434 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"),
435 },
436 },
437 { }
438};
439
e76dc1dd
MH		 440static int btbcm_read_info(struct hci_dev *hdev)
441{
442 struct sk_buff *skb;
443
444 /* Read Verbose Config Version Info */
445 skb = btbcm_read_verbose_config(hdev);
446 if (IS_ERR(skb))
447 return PTR_ERR(skb);
448
2064ee33 449 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
e76dc1dd
MH		 450 kfree_skb(skb);
451
af35e28f
HJ		 452 return 0;
453}
454
455static int btbcm_print_controller_features(struct hci_dev *hdev)
456{
457 struct sk_buff *skb;
458
e76dc1dd
MH		 459 /* Read Controller Features */
460 skb = btbcm_read_controller_features(hdev);
461 if (IS_ERR(skb))
462 return PTR_ERR(skb);
463
2064ee33 464 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
e76dc1dd
MH		 465 kfree_skb(skb);
466
801b4c02
AG		 467 /* Read DMI and disable broken Read LE Min/Max Tx Power */
468 if (dmi_first_match(disable_broken_read_transmit_power))
469 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
470
2fcdd562
HG		 471 return 0;
472}
473
474static int btbcm_print_local_name(struct hci_dev *hdev)
475{
476 struct sk_buff *skb;
477
e76dc1dd
MH		 478 /* Read Local Name */
479 skb = btbcm_read_local_name(hdev);
480 if (IS_ERR(skb))
481 return PTR_ERR(skb);
482
2064ee33 483 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
e76dc1dd
MH		 484 kfree_skb(skb);
485
486 return 0;
487}
488
f7328381 489struct bcm_subver_table {
1c8ba6d0
MH		 490 u16 subver;
491 const char *name;
f7328381
HG		 492};
493
494static const struct bcm_subver_table bcm_uart_subver_table[] = {
192aa65a 495 { 0x1111, "BCM4362A2" }, /* 000.017.017 */
4a546ec3 496 { 0x4103, "BCM4330B1" }, /* 002.001.003 */
b8dc6476 497 { 0x410d, "BCM4334B0" }, /* 002.001.013 */
9a0bb57d 498 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
039287aa 499 { 0x4204, "BCM2076B1" }, /* 002.002.004 */
a8f3b941 500 { 0x4406, "BCM4324B3" }, /* 002.004.006 */
c03ee9af 501 { 0x4606, "BCM4324B5" }, /* 002.006.006 */
a357ea09 502 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
40db5f0e 503 { 0x610c, "BCM4354" }, /* 003.001.012 */
d456f678 504 { 0x2122, "BCM4343A0" }, /* 001.001.034 */
feb16722 505 { 0x2209, "BCM43430A1" }, /* 001.002.009 */
18a39b9a 506 { 0x6119, "BCM4345C0" }, /* 003.001.025 */
52c8c7a7 507 { 0x6606, "BCM4345C5" }, /* 003.006.006 */
b133e0c4 508 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
92ffe0db 509 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
4f17c2b6
AF		 510 { 0x420d, "BCM4349B1" }, /* 002.002.013 */
511 { 0x420e, "BCM4349B1" }, /* 002.002.014 */
e3ca60d0 512 { 0x4217, "BCM4329B1" }, /* 002.002.023 */
f4d297ee 513 { 0x6106, "BCM4359C0" }, /* 003.001.006 */
1199ab4c 514 { 0x4106, "BCM4335A0" }, /* 002.001.006 */
27f4d1f2 515 { 0x410c, "BCM43430B0" }, /* 002.001.012 */
0d37ddfc 516 { 0x2119, "BCM4373A0" }, /* 001.001.025 */
9a0bb57d
MH		 517 { }
518};
519
fec0de23 520static const struct bcm_subver_table bcm_usb_subver_table[] = {
c03ee9af 521 { 0x2105, "BCM20703A1" }, /* 001.001.005 */
fec0de23
HG		 522 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
523 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
524 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
525 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
526 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
bf0ddd10 527 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
fec0de23
HG		 528 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
529 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
530 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
531 { 0x610c, "BCM4354" }, /* 003.001.012 */
bf0ddd10 532 { 0x6607, "BCM4350C5" }, /* 003.006.007 */
fec0de23
HG		 533 { }
534};
535
63fac334
LW		 536/*
537 * This currently only looks up the device tree board appendix,
538 * but can be expanded to other mechanisms.
539 */
540static const char *btbcm_get_board_name(struct device *dev)
541{
542#ifdef CONFIG_OF
543 struct device_node *root;
544 char *board_type;
545 const char *tmp;
546 int len;
547 int i;
548
549 root = of_find_node_by_path("/");
550 if (!root)
551 return NULL;
552
553 if (of_property_read_string_index(root, "compatible", 0, &tmp))
554 return NULL;
555
556 /* get rid of any '/' in the compatible string */
557 len = strlen(tmp) + 1;
558 board_type = devm_kzalloc(dev, len, GFP_KERNEL);
559 strscpy(board_type, tmp, len);
b76abe46 560 for (i = 0; i < len; i++) {
63fac334
LW		 561 if (board_type[i] == '/')
562 board_type[i] = '-';
563 }
564 of_node_put(root);
565
566 return board_type;
567#else
568 return NULL;
569#endif
570}
571
af35e28f 572int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
75e167e6 573{
fec0de23 574 u16 subver, rev, pid, vid;
75e167e6
FD		 575 struct sk_buff *skb;
576 struct hci_rp_read_local_version *ver;
fec0de23 577 const struct bcm_subver_table *bcm_subver_table;
74530a63 578 const char *hw_name = NULL;
63fac334 579 const char *board_name;
74530a63
HG		 580 char postfix[16] = "";
581 int fw_name_count = 0;
582 bcm_fw_name *fw_name;
0287c5d8 583 const struct firmware *fw;
75e167e6
FD		 584 int i, err;
585
63fac334
LW		 586 board_name = btbcm_get_board_name(&hdev->dev);
587
75e167e6
FD		 588 /* Reset */
589 err = btbcm_reset(hdev);
590 if (err)
591 return err;
592
593 /* Read Local Version Info */
594 skb = btbcm_read_local_version(hdev);
595 if (IS_ERR(skb))
596 return PTR_ERR(skb);
597
598 ver = (struct hci_rp_read_local_version *)skb->data;
599 rev = le16_to_cpu(ver->hci_rev);
600 subver = le16_to_cpu(ver->lmp_subver);
601 kfree_skb(skb);
602
e76dc1dd 603 /* Read controller information */
0287c5d8 604 if (!(*fw_load_done)) {
22ac1916
HG		 605 err = btbcm_read_info(hdev);
606 if (err)
607 return err;
608 }
af35e28f
HJ		 609
610 if (!use_autobaud_mode) {
611 err = btbcm_print_controller_features(hdev);
612 if (err)
613 return err;
614
615 err = btbcm_print_local_name(hdev);
616 if (err)
617 return err;
618 }
75e167e6 619
fec0de23
HG		 620 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
621 bcm_uart_subver_table;
622
623 for (i = 0; bcm_subver_table[i].name; i++) {
624 if (subver == bcm_subver_table[i].subver) {
625 hw_name = bcm_subver_table[i].name;
626 break;
75e167e6 627 }
fec0de23 628 }
75e167e6 629
f53b975c 630 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
74530a63 631 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
f53b975c
HG		 632 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
633
634 if (*fw_load_done)
635 return 0;
636
fec0de23
HG		 637 if (hdev->bus == HCI_USB) {
638 /* Read USB Product Info */
639 skb = btbcm_read_usb_product(hdev);
640 if (IS_ERR(skb))
641 return PTR_ERR(skb);
642
643 vid = get_unaligned_le16(skb->data + 1);
644 pid = get_unaligned_le16(skb->data + 3);
645 kfree_skb(skb);
646
74530a63 647 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid);
75e167e6
FD		 648 }
649
74530a63
HG		 650 fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
651 if (!fw_name)
652 return -ENOMEM;
653
654 if (hw_name) {
63fac334
LW		 655 if (board_name) {
656 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
657 "brcm/%s%s.%s.hcd", hw_name, postfix, board_name);
658 fw_name_count++;
659 }
74530a63
HG		 660 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
661 "brcm/%s%s.hcd", hw_name, postfix);
662 fw_name_count++;
0287c5d8
HG		 663 }
664
63fac334
LW		 665 if (board_name) {
666 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
667 "brcm/BCM%s.%s.hcd", postfix, board_name);
668 fw_name_count++;
669 }
74530a63
HG		 670 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
671 "brcm/BCM%s.hcd", postfix);
672 fw_name_count++;
673
674 for (i = 0; i < fw_name_count; i++) {
675 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
676 if (err == 0) {
677 bt_dev_info(hdev, "%s '%s' Patch",
678 hw_name ? hw_name : "BCM", fw_name[i]);
679 *fw_load_done = true;
680 break;
681 }
682 }
683
684 if (*fw_load_done) {
685 err = btbcm_patchram(hdev, fw);
686 if (err)
687 bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
688
689 release_firmware(fw);
690 } else {
691 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
692 for (i = 0; i < fw_name_count; i++)
693 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
694 }
0287c5d8 695
74530a63 696 kfree(fw_name);
75e167e6
FD		 697 return 0;
698}
699EXPORT_SYMBOL_GPL(btbcm_initialize);
700
af35e28f 701int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
75e167e6 702{
75e167e6
FD		 703 int err;
704
0383f16a
HG		 705 /* Re-initialize if necessary */
706 if (*fw_load_done) {
af35e28f 707 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode);
0383f16a
HG		 708 if (err)
709 return err;
710 }
75e167e6 711
75e167e6
FD		 712 btbcm_check_bdaddr(hdev);
713
714 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
715
716 return 0;
717}
718EXPORT_SYMBOL_GPL(btbcm_finalize);
719
1c8ba6d0
MH		 720int btbcm_setup_patchram(struct hci_dev *hdev)
721{
0287c5d8 722 bool fw_load_done = false;
af35e28f 723 bool use_autobaud_mode = false;
59ce5699 724 int err;
1c8ba6d0 725
59ce5699 726 /* Initialize */
af35e28f 727 err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode);
e76dc1dd
MH		 728 if (err)
729 return err;
9bc63ca0 730
0287c5d8 731 /* Re-initialize after loading Patch */
af35e28f 732 return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode);
1c8ba6d0
MH		 733}
734EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
735
736int btbcm_setup_apple(struct hci_dev *hdev)
737{
738 struct sk_buff *skb;
b224d3ff
MH		 739 int err;
740
741 /* Reset */
742 err = btbcm_reset(hdev);
743 if (err)
744 return err;
1c8ba6d0
MH		 745
746 /* Read Verbose Config Version Info */
747 skb = btbcm_read_verbose_config(hdev);
7bee8b08 748 if (!IS_ERR(skb)) {
2064ee33
MH		 749 bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
750 skb->data[1], get_unaligned_le16(skb->data + 5));
7bee8b08
CM		 751 kfree_skb(skb);
752 }
1c8ba6d0 753
34cea41e
MH		 754 /* Read USB Product Info */
755 skb = btbcm_read_usb_product(hdev);
756 if (!IS_ERR(skb)) {
2064ee33
MH		 757 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
758 get_unaligned_le16(skb->data + 1),
759 get_unaligned_le16(skb->data + 3));
34cea41e
MH		 760 kfree_skb(skb);
761 }
762
4284ecbe
MH		 763 /* Read Controller Features */
764 skb = btbcm_read_controller_features(hdev);
765 if (!IS_ERR(skb)) {
2064ee33 766 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
4284ecbe
MH		 767 kfree_skb(skb);
768 }
769
9bc63ca0
MH		 770 /* Read Local Name */
771 skb = btbcm_read_local_name(hdev);
772 if (!IS_ERR(skb)) {
2064ee33 773 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
9bc63ca0
MH		 774 kfree_skb(skb);
775 }
776
941521e2
MH		 777 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
778
1c8ba6d0
MH		 779 return 0;
780}
781EXPORT_SYMBOL_GPL(btbcm_setup_apple);
782
4fba30f0
MH		 783MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
784MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
785MODULE_VERSION(VERSION);
786MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)