// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Bluetooth support for Realtek devices
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*
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* Copyright (C) 2015 Endless Mobile, Inc.
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*/
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <asm/unaligned.h>
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#include <linux/usb.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btrtl.h"
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#define VERSION "0.1"
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#define RTL_EPATCH_SIGNATURE "Realtech"
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#define RTL_ROM_LMP_3499 0x3499
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#define RTL_ROM_LMP_8723A 0x1200
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#define RTL_ROM_LMP_8723B 0x8723
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#define RTL_ROM_LMP_8723D 0x8873
|
#define RTL_ROM_LMP_8821A 0x8821
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#define RTL_ROM_LMP_8761A 0x8761
|
#define RTL_ROM_LMP_8822B 0x8822
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#define RTL_CONFIG_MAGIC 0x8723ab55
|
|
#define IC_MATCH_FL_LMPSUBV (1 << 0)
|
#define IC_MATCH_FL_HCIREV (1 << 1)
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#define IC_MATCH_FL_HCIVER (1 << 2)
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#define IC_MATCH_FL_HCIBUS (1 << 3)
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#define IC_INFO(lmps, hcir) \
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.match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV, \
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.lmp_subver = (lmps), \
|
.hci_rev = (hcir)
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struct id_table {
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__u16 match_flags;
|
__u16 lmp_subver;
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__u16 hci_rev;
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__u8 hci_ver;
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__u8 hci_bus;
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bool config_needed;
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bool has_rom_version;
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char *fw_name;
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char *cfg_name;
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};
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struct btrtl_device_info {
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const struct id_table *ic_info;
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u8 rom_version;
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u8 *fw_data;
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int fw_len;
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u8 *cfg_data;
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int cfg_len;
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};
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|
static const struct id_table ic_id_table[] = {
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{ IC_MATCH_FL_LMPSUBV, RTL_ROM_LMP_8723A, 0x0,
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.config_needed = false,
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.has_rom_version = false,
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.fw_name = "rtl_bt/rtl8723a_fw.bin",
|
.cfg_name = NULL },
|
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{ IC_MATCH_FL_LMPSUBV, RTL_ROM_LMP_3499, 0x0,
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.config_needed = false,
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.has_rom_version = false,
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.fw_name = "rtl_bt/rtl8723a_fw.bin",
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.cfg_name = NULL },
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|
/* 8723BS */
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{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV |
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IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS,
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.lmp_subver = RTL_ROM_LMP_8723B,
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.hci_rev = 0xb,
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.hci_ver = 6,
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.hci_bus = HCI_UART,
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.config_needed = true,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8723bs_fw.bin",
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.cfg_name = "rtl_bt/rtl8723bs_config" },
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/* 8723B */
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{ IC_INFO(RTL_ROM_LMP_8723B, 0xb),
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.config_needed = false,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8723b_fw.bin",
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.cfg_name = "rtl_bt/rtl8723b_config" },
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/* 8723D */
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{ IC_INFO(RTL_ROM_LMP_8723B, 0xd),
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.config_needed = true,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8723d_fw.bin",
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.cfg_name = "rtl_bt/rtl8723d_config" },
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/* 8723DS */
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{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV |
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IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS,
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.lmp_subver = RTL_ROM_LMP_8723B,
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.hci_rev = 0xd,
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.hci_ver = 8,
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.hci_bus = HCI_UART,
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.config_needed = true,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8723ds_fw.bin",
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.cfg_name = "rtl_bt/rtl8723ds_config" },
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/* 8723DU */
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{ IC_INFO(RTL_ROM_LMP_8723D, 0x826C),
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.config_needed = true,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8723d_fw.bin",
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.cfg_name = "rtl_bt/rtl8723d_config" },
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/* 8821A */
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{ IC_INFO(RTL_ROM_LMP_8821A, 0xa),
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.config_needed = false,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8821a_fw.bin",
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.cfg_name = "rtl_bt/rtl8821a_config" },
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/* 8821C */
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{ IC_INFO(RTL_ROM_LMP_8821A, 0xc),
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.config_needed = false,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8821c_fw.bin",
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.cfg_name = "rtl_bt/rtl8821c_config" },
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/* 8761A */
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{ IC_INFO(RTL_ROM_LMP_8761A, 0xa),
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.config_needed = false,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8761a_fw.bin",
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.cfg_name = "rtl_bt/rtl8761a_config" },
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/* 8761B */
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{ IC_INFO(RTL_ROM_LMP_8761A, 0xb),
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.config_needed = false,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8761b_fw.bin",
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.cfg_name = "rtl_bt/rtl8761b_config" },
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/* 8822C with UART interface */
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{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV |
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IC_MATCH_FL_HCIBUS,
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.lmp_subver = RTL_ROM_LMP_8822B,
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.hci_rev = 0x000c,
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.hci_ver = 0x0a,
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.hci_bus = HCI_UART,
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.config_needed = true,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8822cs_fw.bin",
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.cfg_name = "rtl_bt/rtl8822cs_config" },
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/* 8822C with USB interface */
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{ IC_INFO(RTL_ROM_LMP_8822B, 0xc),
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.config_needed = false,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8822cu_fw.bin",
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.cfg_name = "rtl_bt/rtl8822cu_config" },
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/* 8822B */
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{ IC_INFO(RTL_ROM_LMP_8822B, 0xb),
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.config_needed = true,
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.has_rom_version = true,
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.fw_name = "rtl_bt/rtl8822b_fw.bin",
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.cfg_name = "rtl_bt/rtl8822b_config" },
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};
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static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev,
|
u8 hci_ver, u8 hci_bus)
|
{
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int i;
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for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) {
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) &&
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(ic_id_table[i].lmp_subver != lmp_subver))
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continue;
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) &&
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(ic_id_table[i].hci_rev != hci_rev))
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continue;
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) &&
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(ic_id_table[i].hci_ver != hci_ver))
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continue;
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) &&
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(ic_id_table[i].hci_bus != hci_bus))
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continue;
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break;
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}
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if (i >= ARRAY_SIZE(ic_id_table))
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return NULL;
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return &ic_id_table[i];
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}
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static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev)
|
{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)",
|
PTR_ERR(skb));
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return skb;
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}
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if (skb->len != sizeof(struct hci_rp_read_local_version)) {
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rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch");
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
|
{
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struct rtl_rom_version_evt *rom_version;
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struct sk_buff *skb;
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/* Read RTL ROM version command */
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skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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rtl_dev_err(hdev, "Read ROM version failed (%ld)",
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PTR_ERR(skb));
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return PTR_ERR(skb);
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}
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if (skb->len != sizeof(*rom_version)) {
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rtl_dev_err(hdev, "version event length mismatch");
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kfree_skb(skb);
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return -EIO;
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}
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rom_version = (struct rtl_rom_version_evt *)skb->data;
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rtl_dev_info(hdev, "rom_version status=%x version=%x",
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rom_version->status, rom_version->version);
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*version = rom_version->version;
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kfree_skb(skb);
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return 0;
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}
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static int rtlbt_parse_firmware(struct hci_dev *hdev,
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struct btrtl_device_info *btrtl_dev,
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unsigned char **_buf)
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{
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static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
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struct rtl_epatch_header *epatch_info;
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unsigned char *buf;
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int i, len;
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size_t min_size;
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u8 opcode, length, data;
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int project_id = -1;
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const unsigned char *fwptr, *chip_id_base;
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const unsigned char *patch_length_base, *patch_offset_base;
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u32 patch_offset = 0;
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u16 patch_length, num_patches;
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static const struct {
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__u16 lmp_subver;
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__u8 id;
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} project_id_to_lmp_subver[] = {
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{ RTL_ROM_LMP_8723A, 0 },
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{ RTL_ROM_LMP_8723B, 1 },
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{ RTL_ROM_LMP_8821A, 2 },
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{ RTL_ROM_LMP_8761A, 3 },
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{ RTL_ROM_LMP_8822B, 8 },
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{ RTL_ROM_LMP_8723B, 9 }, /* 8723D */
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{ RTL_ROM_LMP_8821A, 10 }, /* 8821C */
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{ RTL_ROM_LMP_8822B, 13 }, /* 8822C */
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{ RTL_ROM_LMP_8761A, 14 }, /* 8761B */
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};
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min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
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if (btrtl_dev->fw_len < min_size)
|
return -EINVAL;
|
|
fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig);
|
if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
|
rtl_dev_err(hdev, "extension section signature mismatch");
|
return -EINVAL;
|
}
|
|
/* Loop from the end of the firmware parsing instructions, until
|
* we find an instruction that identifies the "project ID" for the
|
* hardware supported by this firwmare file.
|
* Once we have that, we double-check that that project_id is suitable
|
* for the hardware we are working with.
|
*/
|
while (fwptr >= btrtl_dev->fw_data + (sizeof(*epatch_info) + 3)) {
|
opcode = *--fwptr;
|
length = *--fwptr;
|
data = *--fwptr;
|
|
BT_DBG("check op=%x len=%x data=%x", opcode, length, data);
|
|
if (opcode == 0xff) /* EOF */
|
break;
|
|
if (length == 0) {
|
rtl_dev_err(hdev, "found instruction with length 0");
|
return -EINVAL;
|
}
|
|
if (opcode == 0 && length == 1) {
|
project_id = data;
|
break;
|
}
|
|
fwptr -= length;
|
}
|
|
if (project_id < 0) {
|
rtl_dev_err(hdev, "failed to find version instruction");
|
return -EINVAL;
|
}
|
|
/* Find project_id in table */
|
for (i = 0; i < ARRAY_SIZE(project_id_to_lmp_subver); i++) {
|
if (project_id == project_id_to_lmp_subver[i].id)
|
break;
|
}
|
|
if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) {
|
rtl_dev_err(hdev, "unknown project id %d", project_id);
|
return -EINVAL;
|
}
|
|
if (btrtl_dev->ic_info->lmp_subver !=
|
project_id_to_lmp_subver[i].lmp_subver) {
|
rtl_dev_err(hdev, "firmware is for %x but this is a %x",
|
project_id_to_lmp_subver[i].lmp_subver,
|
btrtl_dev->ic_info->lmp_subver);
|
return -EINVAL;
|
}
|
|
epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data;
|
if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) {
|
rtl_dev_err(hdev, "bad EPATCH signature");
|
return -EINVAL;
|
}
|
|
num_patches = le16_to_cpu(epatch_info->num_patches);
|
BT_DBG("fw_version=%x, num_patches=%d",
|
le32_to_cpu(epatch_info->fw_version), num_patches);
|
|
/* After the rtl_epatch_header there is a funky patch metadata section.
|
* Assuming 2 patches, the layout is:
|
* ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2
|
*
|
* Find the right patch for this chip.
|
*/
|
min_size += 8 * num_patches;
|
if (btrtl_dev->fw_len < min_size)
|
return -EINVAL;
|
|
chip_id_base = btrtl_dev->fw_data + sizeof(struct rtl_epatch_header);
|
patch_length_base = chip_id_base + (sizeof(u16) * num_patches);
|
patch_offset_base = patch_length_base + (sizeof(u16) * num_patches);
|
for (i = 0; i < num_patches; i++) {
|
u16 chip_id = get_unaligned_le16(chip_id_base +
|
(i * sizeof(u16)));
|
if (chip_id == btrtl_dev->rom_version + 1) {
|
patch_length = get_unaligned_le16(patch_length_base +
|
(i * sizeof(u16)));
|
patch_offset = get_unaligned_le32(patch_offset_base +
|
(i * sizeof(u32)));
|
break;
|
}
|
}
|
|
if (!patch_offset) {
|
rtl_dev_err(hdev, "didn't find patch for chip id %d",
|
btrtl_dev->rom_version);
|
return -EINVAL;
|
}
|
|
BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i);
|
min_size = patch_offset + patch_length;
|
if (btrtl_dev->fw_len < min_size)
|
return -EINVAL;
|
|
/* Copy the firmware into a new buffer and write the version at
|
* the end.
|
*/
|
len = patch_length;
|
buf = kvmalloc(patch_length, GFP_KERNEL);
|
if (!buf)
|
return -ENOMEM;
|
|
memcpy(buf, btrtl_dev->fw_data + patch_offset, patch_length - 4);
|
memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4);
|
|
*_buf = buf;
|
return len;
|
}
|
|
static int rtl_download_firmware(struct hci_dev *hdev,
|
const unsigned char *data, int fw_len)
|
{
|
struct rtl_download_cmd *dl_cmd;
|
int frag_num = fw_len / RTL_FRAG_LEN + 1;
|
int frag_len = RTL_FRAG_LEN;
|
int ret = 0;
|
int i;
|
struct sk_buff *skb;
|
struct hci_rp_read_local_version *rp;
|
|
dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
|
if (!dl_cmd)
|
return -ENOMEM;
|
|
for (i = 0; i < frag_num; i++) {
|
struct sk_buff *skb;
|
|
BT_DBG("download fw (%d/%d)", i, frag_num);
|
|
if (i > 0x7f)
|
dl_cmd->index = (i & 0x7f) + 1;
|
else
|
dl_cmd->index = i;
|
|
if (i == (frag_num - 1)) {
|
dl_cmd->index |= 0x80; /* data end */
|
frag_len = fw_len % RTL_FRAG_LEN;
|
}
|
memcpy(dl_cmd->data, data, frag_len);
|
|
/* Send download command */
|
skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
|
HCI_INIT_TIMEOUT);
|
if (IS_ERR(skb)) {
|
rtl_dev_err(hdev, "download fw command failed (%ld)",
|
PTR_ERR(skb));
|
ret = PTR_ERR(skb);
|
goto out;
|
}
|
|
if (skb->len != sizeof(struct rtl_download_response)) {
|
rtl_dev_err(hdev, "download fw event length mismatch");
|
kfree_skb(skb);
|
ret = -EIO;
|
goto out;
|
}
|
|
kfree_skb(skb);
|
data += RTL_FRAG_LEN;
|
}
|
|
skb = btrtl_read_local_version(hdev);
|
if (IS_ERR(skb)) {
|
ret = PTR_ERR(skb);
|
rtl_dev_err(hdev, "read local version failed");
|
goto out;
|
}
|
|
rp = (struct hci_rp_read_local_version *)skb->data;
|
rtl_dev_info(hdev, "fw version 0x%04x%04x",
|
__le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver));
|
kfree_skb(skb);
|
|
out:
|
kfree(dl_cmd);
|
return ret;
|
}
|
|
static int rtl_load_file(struct hci_dev *hdev, const char *name, u8 **buff)
|
{
|
const struct firmware *fw;
|
int ret;
|
|
rtl_dev_info(hdev, "loading %s", name);
|
ret = request_firmware(&fw, name, &hdev->dev);
|
if (ret < 0)
|
return ret;
|
ret = fw->size;
|
*buff = kvmalloc(fw->size, GFP_KERNEL);
|
if (*buff)
|
memcpy(*buff, fw->data, ret);
|
else
|
ret = -ENOMEM;
|
|
release_firmware(fw);
|
|
return ret;
|
}
|
|
static int btrtl_setup_rtl8723a(struct hci_dev *hdev,
|
struct btrtl_device_info *btrtl_dev)
|
{
|
if (btrtl_dev->fw_len < 8)
|
return -EINVAL;
|
|
/* Check that the firmware doesn't have the epatch signature
|
* (which is only for RTL8723B and newer).
|
*/
|
if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) {
|
rtl_dev_err(hdev, "unexpected EPATCH signature!");
|
return -EINVAL;
|
}
|
|
return rtl_download_firmware(hdev, btrtl_dev->fw_data,
|
btrtl_dev->fw_len);
|
}
|
|
static int btrtl_setup_rtl8723b(struct hci_dev *hdev,
|
struct btrtl_device_info *btrtl_dev)
|
{
|
unsigned char *fw_data = NULL;
|
int ret;
|
u8 *tbuff;
|
|
ret = rtlbt_parse_firmware(hdev, btrtl_dev, &fw_data);
|
if (ret < 0)
|
goto out;
|
|
if (btrtl_dev->cfg_len > 0) {
|
tbuff = kvzalloc(ret + btrtl_dev->cfg_len, GFP_KERNEL);
|
if (!tbuff) {
|
ret = -ENOMEM;
|
goto out;
|
}
|
|
memcpy(tbuff, fw_data, ret);
|
kvfree(fw_data);
|
|
memcpy(tbuff + ret, btrtl_dev->cfg_data, btrtl_dev->cfg_len);
|
ret += btrtl_dev->cfg_len;
|
|
fw_data = tbuff;
|
}
|
|
rtl_dev_info(hdev, "cfg_sz %d, total sz %d", btrtl_dev->cfg_len, ret);
|
|
ret = rtl_download_firmware(hdev, fw_data, ret);
|
|
out:
|
kvfree(fw_data);
|
return ret;
|
}
|
|
void btrtl_free(struct btrtl_device_info *btrtl_dev)
|
{
|
kvfree(btrtl_dev->fw_data);
|
kvfree(btrtl_dev->cfg_data);
|
kfree(btrtl_dev);
|
}
|
EXPORT_SYMBOL_GPL(btrtl_free);
|
|
struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
|
const char *postfix)
|
{
|
struct btrtl_device_info *btrtl_dev;
|
struct sk_buff *skb;
|
struct hci_rp_read_local_version *resp;
|
char cfg_name[40];
|
u16 hci_rev, lmp_subver;
|
u8 hci_ver;
|
int ret;
|
|
btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL);
|
if (!btrtl_dev) {
|
ret = -ENOMEM;
|
goto err_alloc;
|
}
|
|
skb = btrtl_read_local_version(hdev);
|
if (IS_ERR(skb)) {
|
ret = PTR_ERR(skb);
|
goto err_free;
|
}
|
|
resp = (struct hci_rp_read_local_version *)skb->data;
|
rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x",
|
resp->hci_ver, resp->hci_rev,
|
resp->lmp_ver, resp->lmp_subver);
|
|
hci_ver = resp->hci_ver;
|
hci_rev = le16_to_cpu(resp->hci_rev);
|
lmp_subver = le16_to_cpu(resp->lmp_subver);
|
kfree_skb(skb);
|
|
btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
|
hdev->bus);
|
|
if (!btrtl_dev->ic_info) {
|
rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x",
|
lmp_subver, hci_rev, hci_ver);
|
return btrtl_dev;
|
}
|
|
if (btrtl_dev->ic_info->has_rom_version) {
|
ret = rtl_read_rom_version(hdev, &btrtl_dev->rom_version);
|
if (ret)
|
goto err_free;
|
}
|
|
btrtl_dev->fw_len = rtl_load_file(hdev, btrtl_dev->ic_info->fw_name,
|
&btrtl_dev->fw_data);
|
if (btrtl_dev->fw_len < 0) {
|
rtl_dev_err(hdev, "firmware file %s not found",
|
btrtl_dev->ic_info->fw_name);
|
ret = btrtl_dev->fw_len;
|
goto err_free;
|
}
|
|
if (btrtl_dev->ic_info->cfg_name) {
|
if (postfix) {
|
snprintf(cfg_name, sizeof(cfg_name), "%s-%s.bin",
|
btrtl_dev->ic_info->cfg_name, postfix);
|
} else {
|
snprintf(cfg_name, sizeof(cfg_name), "%s.bin",
|
btrtl_dev->ic_info->cfg_name);
|
}
|
btrtl_dev->cfg_len = rtl_load_file(hdev, cfg_name,
|
&btrtl_dev->cfg_data);
|
if (btrtl_dev->ic_info->config_needed &&
|
btrtl_dev->cfg_len <= 0) {
|
rtl_dev_err(hdev, "mandatory config file %s not found",
|
btrtl_dev->ic_info->cfg_name);
|
ret = btrtl_dev->cfg_len;
|
goto err_free;
|
}
|
}
|
|
return btrtl_dev;
|
|
err_free:
|
btrtl_free(btrtl_dev);
|
err_alloc:
|
return ERR_PTR(ret);
|
}
|
EXPORT_SYMBOL_GPL(btrtl_initialize);
|
|
int btrtl_download_firmware(struct hci_dev *hdev,
|
struct btrtl_device_info *btrtl_dev)
|
{
|
/* Match a set of subver values that correspond to stock firmware,
|
* which is not compatible with standard btusb.
|
* If matched, upload an alternative firmware that does conform to
|
* standard btusb. Once that firmware is uploaded, the subver changes
|
* to a different value.
|
*/
|
if (!btrtl_dev->ic_info) {
|
rtl_dev_info(hdev, "assuming no firmware upload needed");
|
return 0;
|
}
|
|
switch (btrtl_dev->ic_info->lmp_subver) {
|
case RTL_ROM_LMP_8723A:
|
case RTL_ROM_LMP_3499:
|
return btrtl_setup_rtl8723a(hdev, btrtl_dev);
|
case RTL_ROM_LMP_8723B:
|
case RTL_ROM_LMP_8821A:
|
case RTL_ROM_LMP_8761A:
|
case RTL_ROM_LMP_8822B:
|
return btrtl_setup_rtl8723b(hdev, btrtl_dev);
|
default:
|
rtl_dev_info(hdev, "assuming no firmware upload needed");
|
return 0;
|
}
|
}
|
EXPORT_SYMBOL_GPL(btrtl_download_firmware);
|
|
int btrtl_setup_realtek(struct hci_dev *hdev)
|
{
|
struct btrtl_device_info *btrtl_dev;
|
int ret;
|
|
btrtl_dev = btrtl_initialize(hdev, NULL);
|
if (IS_ERR(btrtl_dev))
|
return PTR_ERR(btrtl_dev);
|
|
ret = btrtl_download_firmware(hdev, btrtl_dev);
|
|
btrtl_free(btrtl_dev);
|
|
/* Enable controller to do both LE scan and BR/EDR inquiry
|
* simultaneously.
|
*/
|
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
|
|
return ret;
|
}
|
EXPORT_SYMBOL_GPL(btrtl_setup_realtek);
|
|
int btrtl_shutdown_realtek(struct hci_dev *hdev)
|
{
|
struct sk_buff *skb;
|
int ret;
|
|
/* According to the vendor driver, BT must be reset on close to avoid
|
* firmware crash.
|
*/
|
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
|
if (IS_ERR(skb)) {
|
ret = PTR_ERR(skb);
|
bt_dev_err(hdev, "HCI reset during shutdown failed");
|
return ret;
|
}
|
kfree_skb(skb);
|
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(btrtl_shutdown_realtek);
|
|
static unsigned int btrtl_convert_baudrate(u32 device_baudrate)
|
{
|
switch (device_baudrate) {
|
case 0x0252a00a:
|
return 230400;
|
|
case 0x05f75004:
|
return 921600;
|
|
case 0x00005004:
|
return 1000000;
|
|
case 0x04928002:
|
case 0x01128002:
|
return 1500000;
|
|
case 0x00005002:
|
return 2000000;
|
|
case 0x0000b001:
|
return 2500000;
|
|
case 0x04928001:
|
return 3000000;
|
|
case 0x052a6001:
|
return 3500000;
|
|
case 0x00005001:
|
return 4000000;
|
|
case 0x0252c014:
|
default:
|
return 115200;
|
}
|
}
|
|
int btrtl_get_uart_settings(struct hci_dev *hdev,
|
struct btrtl_device_info *btrtl_dev,
|
unsigned int *controller_baudrate,
|
u32 *device_baudrate, bool *flow_control)
|
{
|
struct rtl_vendor_config *config;
|
struct rtl_vendor_config_entry *entry;
|
int i, total_data_len;
|
bool found = false;
|
|
total_data_len = btrtl_dev->cfg_len - sizeof(*config);
|
if (total_data_len <= 0) {
|
rtl_dev_warn(hdev, "no config loaded");
|
return -EINVAL;
|
}
|
|
config = (struct rtl_vendor_config *)btrtl_dev->cfg_data;
|
if (le32_to_cpu(config->signature) != RTL_CONFIG_MAGIC) {
|
rtl_dev_err(hdev, "invalid config magic");
|
return -EINVAL;
|
}
|
|
if (total_data_len < le16_to_cpu(config->total_len)) {
|
rtl_dev_err(hdev, "config is too short");
|
return -EINVAL;
|
}
|
|
for (i = 0; i < total_data_len; ) {
|
entry = ((void *)config->entry) + i;
|
|
switch (le16_to_cpu(entry->offset)) {
|
case 0xc:
|
if (entry->len < sizeof(*device_baudrate)) {
|
rtl_dev_err(hdev, "invalid UART config entry");
|
return -EINVAL;
|
}
|
|
*device_baudrate = get_unaligned_le32(entry->data);
|
*controller_baudrate = btrtl_convert_baudrate(
|
*device_baudrate);
|
|
if (entry->len >= 13)
|
*flow_control = !!(entry->data[12] & BIT(2));
|
else
|
*flow_control = false;
|
|
found = true;
|
break;
|
|
default:
|
rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)",
|
le16_to_cpu(entry->offset), entry->len);
|
break;
|
}
|
|
i += sizeof(*entry) + entry->len;
|
}
|
|
if (!found) {
|
rtl_dev_err(hdev, "no UART config entry found");
|
return -ENOENT;
|
}
|
|
rtl_dev_dbg(hdev, "device baudrate = 0x%08x", *device_baudrate);
|
rtl_dev_dbg(hdev, "controller baudrate = %u", *controller_baudrate);
|
rtl_dev_dbg(hdev, "flow control %d", *flow_control);
|
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(btrtl_get_uart_settings);
|
|
MODULE_AUTHOR("Daniel Drake <drake@endlessm.com>");
|
MODULE_DESCRIPTION("Bluetooth support for Realtek devices ver " VERSION);
|
MODULE_VERSION(VERSION);
|
MODULE_LICENSE("GPL");
|
MODULE_FIRMWARE("rtl_bt/rtl8723a_fw.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8723b_fw.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8723b_config.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8723bs_fw.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8723bs_config.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8723ds_fw.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8723ds_config.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8761a_fw.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8761a_config.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8821a_fw.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8821a_config.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8822b_fw.bin");
|
MODULE_FIRMWARE("rtl_bt/rtl8822b_config.bin");
|
