3 * Bluetooth support for Broadcom devices
5 * Copyright (C) 2015 Intel Corporation
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.
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.
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
24 #include <linux/module.h>
25 #include <linux/firmware.h>
26 #include <asm/unaligned.h>
28 #include <net/bluetooth/bluetooth.h>
29 #include <net/bluetooth/hci_core.h>
35 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
37 int btbcm_check_bdaddr(struct hci_dev *hdev)
39 struct hci_rp_read_bd_addr *bda;
42 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
45 int err = PTR_ERR(skb);
46 BT_ERR("%s: BCM: Reading device address failed (%d)",
51 if (skb->len != sizeof(*bda)) {
52 BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
57 bda = (struct hci_rp_read_bd_addr *)skb->data;
59 /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
60 * with no configured address.
62 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
63 BT_INFO("%s: BCM: Using default device address (%pMR)",
64 hdev->name, &bda->bdaddr);
65 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
72 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
74 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
79 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
82 BT_ERR("%s: BCM: Change address command failed (%d)",
90 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
92 int btbcm_patchram(struct hci_dev *hdev, const char *firmware)
94 const struct hci_command_hdr *cmd;
95 const struct firmware *fw;
102 err = request_firmware(&fw, firmware, &hdev->dev);
104 BT_INFO("%s: BCM: Patch %s not found", hdev->name, firmware);
109 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
112 BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
118 /* 50 msec delay after Download Minidrv completes */
124 while (fw_size >= sizeof(*cmd)) {
127 cmd = (struct hci_command_hdr *)fw_ptr;
128 fw_ptr += sizeof(*cmd);
129 fw_size -= sizeof(*cmd);
131 if (fw_size < cmd->plen) {
132 BT_ERR("%s: BCM: Patch %s is corrupted", hdev->name,
140 fw_size -= cmd->plen;
142 opcode = le16_to_cpu(cmd->opcode);
144 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
148 BT_ERR("%s: BCM: Patch command %04x failed (%d)",
149 hdev->name, opcode, err);
155 /* 250 msec delay after Launch Ram completes */
159 release_firmware(fw);
162 EXPORT_SYMBOL(btbcm_patchram);
164 static int btbcm_reset(struct hci_dev *hdev)
168 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
170 int err = PTR_ERR(skb);
171 BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
179 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
183 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
186 BT_ERR("%s: BCM: Reading local version info failed (%ld)",
187 hdev->name, PTR_ERR(skb));
191 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
192 BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
194 return ERR_PTR(-EIO);
200 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
204 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
206 BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
207 hdev->name, PTR_ERR(skb));
212 BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
214 return ERR_PTR(-EIO);
220 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
224 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
226 BT_ERR("%s: BCM: Read USB product info failed (%ld)",
227 hdev->name, PTR_ERR(skb));
232 BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
234 return ERR_PTR(-EIO);
240 static const struct {
243 } bcm_uart_subver_table[] = {
244 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
248 static const struct {
251 } bcm_usb_subver_table[] = {
252 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
253 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
254 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
255 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
256 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
257 { 0x230f, "BCM4354A2" }, /* 001.003.015 */
258 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
259 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
260 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
261 { 0x610c, "BCM4354" }, /* 003.001.012 */
265 int btbcm_setup_patchram(struct hci_dev *hdev)
268 u16 subver, rev, pid, vid;
269 const char *hw_name = NULL;
271 struct hci_rp_read_local_version *ver;
275 err = btbcm_reset(hdev);
279 /* Read Local Version Info */
280 skb = btbcm_read_local_version(hdev);
284 ver = (struct hci_rp_read_local_version *)skb->data;
285 rev = le16_to_cpu(ver->hci_rev);
286 subver = le16_to_cpu(ver->lmp_subver);
289 /* Read Verbose Config Version Info */
290 skb = btbcm_read_verbose_config(hdev);
294 BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
297 switch ((rev & 0xf000) >> 12) {
299 for (i = 0; bcm_uart_subver_table[i].name; i++) {
300 if (subver == bcm_uart_subver_table[i].subver) {
301 hw_name = bcm_uart_subver_table[i].name;
306 snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
311 /* Read USB Product Info */
312 skb = btbcm_read_usb_product(hdev);
316 vid = get_unaligned_le16(skb->data + 1);
317 pid = get_unaligned_le16(skb->data + 3);
320 for (i = 0; bcm_usb_subver_table[i].name; i++) {
321 if (subver == bcm_usb_subver_table[i].subver) {
322 hw_name = bcm_usb_subver_table[i].name;
327 snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
328 hw_name ? : "BCM", vid, pid);
334 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
335 hw_name ? : "BCM", (subver & 0x7000) >> 13,
336 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
338 err = btbcm_patchram(hdev, fw_name);
343 err = btbcm_reset(hdev);
347 /* Read Local Version Info */
348 skb = btbcm_read_local_version(hdev);
352 ver = (struct hci_rp_read_local_version *)skb->data;
353 rev = le16_to_cpu(ver->hci_rev);
354 subver = le16_to_cpu(ver->lmp_subver);
357 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
358 hw_name ? : "BCM", (subver & 0x7000) >> 13,
359 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
361 btbcm_check_bdaddr(hdev);
363 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
367 EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
369 int btbcm_setup_apple(struct hci_dev *hdev)
373 /* Read Verbose Config Version Info */
374 skb = btbcm_read_verbose_config(hdev);
378 BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
379 get_unaligned_le16(skb->data + 5));
382 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
386 EXPORT_SYMBOL_GPL(btbcm_setup_apple);
388 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
389 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
390 MODULE_VERSION(VERSION);
391 MODULE_LICENSE("GPL");