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 BT_ERR("%s: BCM: Device address result failed (%02x)",
60 hdev->name, bda->status);
62 return -bt_to_errno(bda->status);
65 /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
66 * with no configured address.
68 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
69 BT_INFO("%s: BCM: Using default device address (%pMR)",
70 hdev->name, &bda->bdaddr);
71 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
78 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
80 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
85 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
88 BT_ERR("%s: BCM: Change address command failed (%d)",
96 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
98 int btbcm_patchram(struct hci_dev *hdev, const char *firmware)
100 const struct hci_command_hdr *cmd;
101 const struct firmware *fw;
108 err = request_firmware(&fw, firmware, &hdev->dev);
110 BT_INFO("%s: BCM: Patch %s not found", hdev->name, firmware);
115 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
118 BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
124 /* 50 msec delay after Download Minidrv completes */
130 while (fw_size >= sizeof(*cmd)) {
133 cmd = (struct hci_command_hdr *)fw_ptr;
134 fw_ptr += sizeof(*cmd);
135 fw_size -= sizeof(*cmd);
137 if (fw_size < cmd->plen) {
138 BT_ERR("%s: BCM: Patch %s is corrupted", hdev->name,
146 fw_size -= cmd->plen;
148 opcode = le16_to_cpu(cmd->opcode);
150 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
154 BT_ERR("%s: BCM: Patch command %04x failed (%d)",
155 hdev->name, opcode, err);
161 /* 250 msec delay after Launch Ram completes */
165 release_firmware(fw);
168 EXPORT_SYMBOL(btbcm_patchram);
170 static int btbcm_reset(struct hci_dev *hdev)
174 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
176 int err = PTR_ERR(skb);
177 BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
185 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
189 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
192 BT_ERR("%s: BCM: Reading local version info failed (%ld)",
193 hdev->name, PTR_ERR(skb));
197 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
198 BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
200 return ERR_PTR(-EIO);
206 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
210 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
212 BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
213 hdev->name, PTR_ERR(skb));
218 BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
220 return ERR_PTR(-EIO);
226 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
230 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
232 BT_ERR("%s: BCM: Read USB product info failed (%ld)",
233 hdev->name, PTR_ERR(skb));
238 BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
240 return ERR_PTR(-EIO);
246 static const struct {
249 } bcm_uart_subver_table[] = {
250 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
254 static const struct {
257 } bcm_usb_subver_table[] = {
258 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
259 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
260 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
261 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
262 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
263 { 0x230f, "BCM4354A2" }, /* 001.003.015 */
264 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
265 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
266 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
267 { 0x610c, "BCM4354" }, /* 003.001.012 */
271 int btbcm_setup_patchram(struct hci_dev *hdev)
274 u16 subver, rev, pid, vid;
275 const char *hw_name = NULL;
277 struct hci_rp_read_local_version *ver;
281 err = btbcm_reset(hdev);
285 /* Read Local Version Info */
286 skb = btbcm_read_local_version(hdev);
290 ver = (struct hci_rp_read_local_version *)skb->data;
291 rev = le16_to_cpu(ver->hci_rev);
292 subver = le16_to_cpu(ver->lmp_subver);
295 /* Read Verbose Config Version Info */
296 skb = btbcm_read_verbose_config(hdev);
300 BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
303 switch ((rev & 0xf000) >> 12) {
305 for (i = 0; bcm_uart_subver_table[i].name; i++) {
306 if (subver == bcm_uart_subver_table[i].subver) {
307 hw_name = bcm_uart_subver_table[i].name;
312 snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
317 /* Read USB Product Info */
318 skb = btbcm_read_usb_product(hdev);
322 vid = get_unaligned_le16(skb->data + 1);
323 pid = get_unaligned_le16(skb->data + 3);
326 for (i = 0; bcm_usb_subver_table[i].name; i++) {
327 if (subver == bcm_usb_subver_table[i].subver) {
328 hw_name = bcm_usb_subver_table[i].name;
333 snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
334 hw_name ? : "BCM", vid, pid);
340 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
341 hw_name ? : "BCM", (subver & 0x7000) >> 13,
342 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
344 err = btbcm_patchram(hdev, fw_name);
349 err = btbcm_reset(hdev);
353 /* Read Local Version Info */
354 skb = btbcm_read_local_version(hdev);
358 ver = (struct hci_rp_read_local_version *)skb->data;
359 rev = le16_to_cpu(ver->hci_rev);
360 subver = le16_to_cpu(ver->lmp_subver);
363 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
364 hw_name ? : "BCM", (subver & 0x7000) >> 13,
365 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
367 btbcm_check_bdaddr(hdev);
369 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
373 EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
375 int btbcm_setup_apple(struct hci_dev *hdev)
379 /* Read Verbose Config Version Info */
380 skb = btbcm_read_verbose_config(hdev);
384 BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
385 get_unaligned_le16(skb->data + 5));
388 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
392 EXPORT_SYMBOL_GPL(btbcm_setup_apple);
394 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
395 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
396 MODULE_VERSION(VERSION);
397 MODULE_LICENSE("GPL");