path: root/drivers/bluetooth/btrtl.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Bluetooth support for Realtek devices
 *
 *  Copyright (C) 2015 Endless Mobile, Inc.
 */

#include <linux/module.h>
#include <linux/firmware.h>
#include <asm/unaligned.h>
#include <linux/usb.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btrtl.h"

#define VERSION "0.1"

#define RTL_EPATCH_SIGNATURE	"Realtech"
#define RTL_ROM_LMP_8723A	0x1200
#define RTL_ROM_LMP_8723B	0x8723
#define RTL_ROM_LMP_8821A	0x8821
#define RTL_ROM_LMP_8761A	0x8761
#define RTL_ROM_LMP_8822B	0x8822
#define RTL_ROM_LMP_8852A	0x8852
#define RTL_CONFIG_MAGIC	0x8723ab55

#define IC_MATCH_FL_LMPSUBV	(1 << 0)
#define IC_MATCH_FL_HCIREV	(1 << 1)
#define IC_MATCH_FL_HCIVER	(1 << 2)
#define IC_MATCH_FL_HCIBUS	(1 << 3)
#define IC_INFO(lmps, hcir, hciv, bus) \
	.match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV | \
		       IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS, \
	.lmp_subver = (lmps), \
	.hci_rev = (hcir), \
	.hci_ver = (hciv), \
	.hci_bus = (bus)

enum btrtl_chip_id {
	CHIP_ID_8723A,
	CHIP_ID_8723B,
	CHIP_ID_8821A,
	CHIP_ID_8761A,
	CHIP_ID_8822B = 8,
	CHIP_ID_8723D,
	CHIP_ID_8821C,
	CHIP_ID_8822C = 13,
	CHIP_ID_8761B,
	CHIP_ID_8852A = 18,
};

struct id_table {
	__u16 match_flags;
	__u16 lmp_subver;
	__u16 hci_rev;
	__u8 hci_ver;
	__u8 hci_bus;
	bool config_needed;
	bool has_rom_version;
	char *fw_name;
	char *cfg_name;
};

struct btrtl_device_info {
	const struct id_table *ic_info;
	u8 rom_version;
	u8 *fw_data;
	int fw_len;
	u8 *cfg_data;
	int cfg_len;
	bool drop_fw;
	int project_id;
};

static const struct id_table ic_id_table[] = {
	/* 8723A */
	{ IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = false,
	  .fw_name = "rtl_bt/rtl8723a_fw.bin",
	  .cfg_name = NULL },

	/* 8723BS */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723bs_fw.bin",
	  .cfg_name = "rtl_bt/rtl8723bs_config" },

	/* 8723B */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723b_fw.bin",
	  .cfg_name = "rtl_bt/rtl8723b_config" },

	/* 8723D */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723d_fw.bin",
	  .cfg_name = "rtl_bt/rtl8723d_config" },

	/* 8723DS */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723ds_fw.bin",
	  .cfg_name = "rtl_bt/rtl8723ds_config" },

	/* 8821A */
	{ IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8821a_fw.bin",
	  .cfg_name = "rtl_bt/rtl8821a_config" },

	/* 8821C */
	{ IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8821c_fw.bin",
	  .cfg_name = "rtl_bt/rtl8821c_config" },

	/* 8761A */
	{ IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8761a_fw.bin",
	  .cfg_name = "rtl_bt/rtl8761a_config" },

	/* 8761B */
	{ IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8761b_fw.bin",
	  .cfg_name = "rtl_bt/rtl8761b_config" },

	/* 8822C with UART interface */
	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8822cs_fw.bin",
	  .cfg_name = "rtl_bt/rtl8822cs_config" },

	/* 8822C with USB interface */
	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8822cu_fw.bin",
	  .cfg_name = "rtl_bt/rtl8822cu_config" },

	/* 8822B */
	{ IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8822b_fw.bin",
	  .cfg_name = "rtl_bt/rtl8822b_config" },

	/* 8852A */
	{ IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8852au_fw.bin",
	  .cfg_name = "rtl_bt/rtl8852au_config" },
	};

static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16