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linux/drivers/bluetooth/btbcm.c
Jörg Krause d456f678a0 Bluetooth: btbcm: Add entry for BCM4343A0 UART bluetooth 
This patch adds the device ID for the bluetooth chip used in the
AMPAK AP6212 WiFi+Bluetooth module. The AP6212 is used on several
BananaPi boards, e.g. M2-Ultra.

The AP6212 is a combo module, where the WiFi chip is identified as
BCM43430A0 whereas the Bluetooth chip identifies itself as 4343A0. Note,
the missing '0' before the 'A0'.

The AP6212 needs a firmware blob. Loading the provided firmware file
from the BananaPi vendor, the adapter name is printed as
'BCM4343A0 26MHz AP6212_CL1-0061':

'''
hci0:	Type: Primary  Bus: UART
	BD Address: 43:43:A0:12:1F:AC  ACL MTU: 1021:8  SCO MTU: 64:1
	UP RUNNING
	RX bytes:3076 acl:0 sco:0 events:278 errors:0
	TX bytes:39726 acl:0 sco:0 commands:279 errors:0
	Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
	Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
	Link policy: RSWITCH SNIFF
	Link mode: SLAVE ACCEPT
	Name: 'BCM4343A0 26MHz AP6212_CL1-0061'
	Class: 0x000000
	Service Classes: Unspecified
	Device Class: Miscellaneous,
	HCI Version: 4.1 (0x7)  Revision: 0xf2
	LMP Version: 4.1 (0x7)  Subversion: 0x2122
	Manufacturer: Broadcom Corporation (15)
'''

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-01-18 10:24:38 +01:00

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/*
*
* Bluetooth support for Broadcom devices
*
* Copyright (C) 2015 Intel Corporation
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/module.h>
#include <linux/firmware.h>
#include <asm/unaligned.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btbcm.h"
#define VERSION "0.1"
#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
int btbcm_check_bdaddr(struct hci_dev *hdev)
{
struct hci_rp_read_bd_addr *bda;
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
int err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
return err;
}
if (skb->len != sizeof(*bda)) {
bt_dev_err(hdev, "BCM: Device address length mismatch");
kfree_skb(skb);
return -EIO;
}
bda = (struct hci_rp_read_bd_addr *)skb->data;
/* Check if the address indicates a controller with either an
* invalid or default address. In both cases the device needs
* to be marked as not having a valid address.
*
* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
* with no configured address.
*
* The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
* with waiting for configuration state.
*
* The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
* with waiting for configuration state.
*/
if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
!bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
!bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
&bda->bdaddr);
set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
int err;
skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
{
const struct hci_command_hdr *cmd;
const u8 *fw_ptr;
size_t fw_size;
struct sk_buff *skb;
u16 opcode;
int err = 0;
/* Start Download */
skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
err);
goto done;
}
kfree_skb(skb);
/* 50 msec delay after Download Minidrv completes */
msleep(50);
fw_ptr = fw->data;
fw_size = fw->size;
while (fw_size >= sizeof(*cmd)) {
const u8 *cmd_param;
cmd = (struct hci_command_hdr *)fw_ptr;
fw_ptr += sizeof(*cmd);
fw_size -= sizeof(*cmd);
if (fw_size < cmd->plen) {
bt_dev_err(hdev, "BCM: Patch is corrupted");
err = -EINVAL;
goto done;
}
cmd_param = fw_ptr;
fw_ptr += cmd->plen;
fw_size -= cmd->plen;
opcode = le16_to_cpu(cmd->opcode);
skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
opcode, err);
goto done;
}
kfree_skb(skb);
}
/* 250 msec delay after Launch Ram completes */
msleep(250);
done:
return err;
}
EXPORT_SYMBOL(btbcm_patchram);
static int btbcm_reset(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
int err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
return err;
}
kfree_skb(skb);
/* 100 msec delay for module to complete reset process */
msleep(100);
return 0;
}
static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != sizeof(struct hci_rp_read_local_name)) {
bt_dev_err(hdev, "BCM: Local name length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != sizeof(struct hci_rp_read_local_version)) {
bt_dev_err(hdev, "BCM: Local version length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != 7) {
bt_dev_err(hdev, "BCM: Verbose config length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != 9) {
bt_dev_err(hdev, "BCM: Controller features length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != 5) {
bt_dev_err(hdev, "BCM: USB product length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static int btbcm_read_info(struct hci_dev *hdev)
{
struct sk_buff *skb;
/* Read Verbose Config Version Info */
skb = btbcm_read_verbose_config(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
kfree_skb(skb);
/* Read Controller Features */
skb = btbcm_read_controller_features(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
kfree_skb(skb);
/* Read Local Name */
skb = btbcm_read_local_name(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
kfree_skb(skb);
return 0;
}
static const struct {
u16 subver;
const char *name;
} bcm_uart_subver_table[] = {
{ 0x4103, "BCM4330B1" }, /* 002.001.003 */
{ 0x410e, "BCM43341B0" }, /* 002.001.014 */
{ 0x4406, "BCM4324B3" }, /* 002.004.006 */
{ 0x610c, "BCM4354" }, /* 003.001.012 */
{ 0x2122, "BCM4343A0" }, /* 001.001.034 */
{ 0x2209, "BCM43430A1" }, /* 001.002.009 */
{ 0x6119, "BCM4345C0" }, /* 003.001.025 */
{ 0x230f, "BCM4356A2" }, /* 001.003.015 */
{ }
};
int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
{
u16 subver, rev;
const char *hw_name = NULL;
struct sk_buff *skb;
struct hci_rp_read_local_version *ver;
int i, err;
/* Reset */
err = btbcm_reset(hdev);
if (err)
return err;
/* Read Local Version Info */
skb = btbcm_read_local_version(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
ver = (struct hci_rp_read_local_version *)skb->data;
rev = le16_to_cpu(ver->hci_rev);
subver = le16_to_cpu(ver->lmp_subver);
kfree_skb(skb);
/* Read controller information */
err = btbcm_read_info(hdev);
if (err)
return err;
switch ((rev & 0xf000) >> 12) {
case 0:
case 1:
case 2:
case 3:
for (i = 0; bcm_uart_subver_table[i].name; i++) {
if (subver == bcm_uart_subver_table[i].subver) {
hw_name = bcm_uart_subver_table[i].name;
break;
}
}
snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
break;
default:
return 0;
}
bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
hw_name ? : "BCM", (subver & 0xe000) >> 13,
(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_initialize);
int btbcm_finalize(struct hci_dev *hdev)
{
struct sk_buff *skb;
struct hci_rp_read_local_version *ver;
u16 subver, rev;
int err;
/* Reset */
err = btbcm_reset(hdev);
if (err)
return err;
/* Read Local Version Info */
skb = btbcm_read_local_version(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
ver = (struct hci_rp_read_local_version *)skb->data;
rev = le16_to_cpu(ver->hci_rev);
subver = le16_to_cpu(ver->lmp_subver);
kfree_skb(skb);
bt_dev_info(hdev, "BCM (%3.3u.%3.3u.%3.3u) build %4.4u",
(subver & 0xe000) >> 13, (subver & 0x1f00) >> 8,
(subver & 0x00ff), rev & 0x0fff);
btbcm_check_bdaddr(hdev);
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_finalize);
static const struct {
u16 subver;
const char *name;
} bcm_usb_subver_table[] = {
{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
{ 0x230f, "BCM4354A2" }, /* 001.003.015 */
{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
{ 0x610c, "BCM4354" }, /* 003.001.012 */
{ }
};
int btbcm_setup_patchram(struct hci_dev *hdev)
{
char fw_name[64];
const struct firmware *fw;
u16 subver, rev, pid, vid;
const char *hw_name = NULL;
struct sk_buff *skb;
struct hci_rp_read_local_version *ver;
int i, err;
/* Reset */
err = btbcm_reset(hdev);
if (err)
return err;
/* Read Local Version Info */
skb = btbcm_read_local_version(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
ver = (struct hci_rp_read_local_version *)skb->data;
rev = le16_to_cpu(ver->hci_rev);
subver = le16_to_cpu(ver->lmp_subver);
kfree_skb(skb);
/* Read controller information */
err = btbcm_read_info(hdev);
if (err)
return err;
switch ((rev & 0xf000) >> 12) {
case 0:
case 3:
for (i = 0; bcm_uart_subver_table[i].name; i++) {
if (subver == bcm_uart_subver_table[i].subver) {
hw_name = bcm_uart_subver_table[i].name;
break;
}
}
snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
hw_name ? : "BCM");
break;
case 1:
case 2:
/* Read USB Product Info */
skb = btbcm_read_usb_product(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
vid = get_unaligned_le16(skb->data + 1);
pid = get_unaligned_le16(skb->data + 3);
kfree_skb(skb);
for (i = 0; bcm_usb_subver_table[i].name; i++) {
if (subver == bcm_usb_subver_table[i].subver) {
hw_name = bcm_usb_subver_table[i].name;
break;
}
}
snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
hw_name ? : "BCM", vid, pid);
break;
default:
return 0;
}
bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
hw_name ? : "BCM", (subver & 0xe000) >> 13,
(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
err = request_firmware(&fw, fw_name, &hdev->dev);
if (err < 0) {
bt_dev_info(hdev, "BCM: Patch %s not found", fw_name);
goto done;
}
btbcm_patchram(hdev, fw);
release_firmware(fw);
/* Reset */
err = btbcm_reset(hdev);
if (err)
return err;
/* Read Local Version Info */
skb = btbcm_read_local_version(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
ver = (struct hci_rp_read_local_version *)skb->data;
rev = le16_to_cpu(ver->hci_rev);
subver = le16_to_cpu(ver->lmp_subver);
kfree_skb(skb);
bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
hw_name ? : "BCM", (subver & 0xe000) >> 13,
(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
/* Read Local Name */
skb = btbcm_read_local_name(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
kfree_skb(skb);
done:
btbcm_check_bdaddr(hdev);
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
int btbcm_setup_apple(struct hci_dev *hdev)
{
struct sk_buff *skb;
int err;
/* Reset */
err = btbcm_reset(hdev);
if (err)
return err;
/* Read Verbose Config Version Info */
skb = btbcm_read_verbose_config(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
skb->data[1], get_unaligned_le16(skb->data + 5));
kfree_skb(skb);
}
/* Read USB Product Info */
skb = btbcm_read_usb_product(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
get_unaligned_le16(skb->data + 1),
get_unaligned_le16(skb->data + 3));
kfree_skb(skb);
}
/* Read Controller Features */
skb = btbcm_read_controller_features(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
kfree_skb(skb);
}
/* Read Local Name */
skb = btbcm_read_local_name(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
kfree_skb(skb);
}
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_setup_apple);
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
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