drivers/bluetooth/btbcm.c

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