diff options
Diffstat (limited to 'drivers/bluetooth/btrtl.c')
| -rw-r--r-- | drivers/bluetooth/btrtl.c | 1510 |
1 files changed, 1510 insertions, 0 deletions
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c new file mode 100644 index 000000000..277d039ec --- /dev/null +++ b/drivers/bluetooth/btrtl.c @@ -0,0 +1,1510 @@ +// 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_CHIP_8723CS_CG 3 +#define RTL_CHIP_8723CS_VF 4 +#define RTL_CHIP_8723CS_XX 5 +#define RTL_EPATCH_SIGNATURE "Realtech" +#define RTL_EPATCH_SIGNATURE_V2 "RTBTCore" +#define RTL_ROM_LMP_8703B 0x8703 +#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_ROM_LMP_8851B 0x8851 +#define RTL_CONFIG_MAGIC 0x8723ab55 + +#define RTL_VSC_OP_COREDUMP 0xfcff + +#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_MATCH_FL_CHIP_TYPE (1 << 4) +#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) + +#define RTL_CHIP_SUBVER (&(struct rtl_vendor_cmd) {{0x10, 0x38, 0x04, 0x28, 0x80}}) +#define RTL_CHIP_REV (&(struct rtl_vendor_cmd) {{0x10, 0x3A, 0x04, 0x28, 0x80}}) +#define RTL_SEC_PROJ (&(struct rtl_vendor_cmd) {{0x10, 0xA4, 0x0D, 0x00, 0xb0}}) + +#define RTL_PATCH_SNIPPETS 0x01 +#define RTL_PATCH_DUMMY_HEADER 0x02 +#define RTL_PATCH_SECURITY_HEADER 0x03 + +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, + CHIP_ID_8852B = 20, + CHIP_ID_8852C = 25, + CHIP_ID_8851B = 36, +}; + +struct id_table { + __u16 match_flags; + __u16 lmp_subver; + __u16 hci_rev; + __u8 hci_ver; + __u8 hci_bus; + __u8 chip_type; + bool config_needed; + bool has_rom_version; + bool has_msft_ext; + char *fw_name; + char *cfg_name; + char *hw_info; +}; + +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; + u8 key_id; + struct list_head patch_subsecs; +}; + +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", + .cfg_name = NULL, + .hw_info = "rtl8723au" }, + + /* 8723BS */ + { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART), + .config_needed = true, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8723bs_fw", + .cfg_name = "rtl_bt/rtl8723bs_config", + .hw_info = "rtl8723bs" }, + + /* 8723B */ + { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8723b_fw", + .cfg_name = "rtl_bt/rtl8723b_config", + .hw_info = "rtl8723bu" }, + + /* 8723CS-CG */ + { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | + IC_MATCH_FL_HCIBUS, + .lmp_subver = RTL_ROM_LMP_8703B, + .chip_type = RTL_CHIP_8723CS_CG, + .hci_bus = HCI_UART, + .config_needed = true, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8723cs_cg_fw", + .cfg_name = "rtl_bt/rtl8723cs_cg_config", + .hw_info = "rtl8723cs-cg" }, + + /* 8723CS-VF */ + { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | + IC_MATCH_FL_HCIBUS, + .lmp_subver = RTL_ROM_LMP_8703B, + .chip_type = RTL_CHIP_8723CS_VF, + .hci_bus = HCI_UART, + .config_needed = true, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8723cs_vf_fw", + .cfg_name = "rtl_bt/rtl8723cs_vf_config", + .hw_info = "rtl8723cs-vf" }, + + /* 8723CS-XX */ + { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | + IC_MATCH_FL_HCIBUS, + .lmp_subver = RTL_ROM_LMP_8703B, + .chip_type = RTL_CHIP_8723CS_XX, + .hci_bus = HCI_UART, + .config_needed = true, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8723cs_xx_fw", + .cfg_name = "rtl_bt/rtl8723cs_xx_config", + .hw_info = "rtl8723cs" }, + + /* 8723D */ + { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB), + .config_needed = true, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8723d_fw", + .cfg_name = "rtl_bt/rtl8723d_config", + .hw_info = "rtl8723du" }, + + /* 8723DS */ + { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART), + .config_needed = true, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8723ds_fw", + .cfg_name = "rtl_bt/rtl8723ds_config", + .hw_info = "rtl8723ds" }, + + /* 8821A */ + { IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8821a_fw", + .cfg_name = "rtl_bt/rtl8821a_config", + .hw_info = "rtl8821au" }, + + /* 8821C */ + { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8821c_fw", + .cfg_name = "rtl_bt/rtl8821c_config", + .hw_info = "rtl8821cu" }, + + /* 8821CS */ + { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_UART), + .config_needed = true, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8821cs_fw", + .cfg_name = "rtl_bt/rtl8821cs_config", + .hw_info = "rtl8821cs" }, + + /* 8761A */ + { IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8761a_fw", + .cfg_name = "rtl_bt/rtl8761a_config", + .hw_info = "rtl8761au" }, + + /* 8761B */ + { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_UART), + .config_needed = false, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8761b_fw", + .cfg_name = "rtl_bt/rtl8761b_config", + .hw_info = "rtl8761btv" }, + + /* 8761BU */ + { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .fw_name = "rtl_bt/rtl8761bu_fw", + .cfg_name = "rtl_bt/rtl8761bu_config", + .hw_info = "rtl8761bu" }, + + /* 8822C with UART interface */ + { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART), + .config_needed = true, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8822cs_fw", + .cfg_name = "rtl_bt/rtl8822cs_config", + .hw_info = "rtl8822cs" }, + + /* 8822C with UART interface */ + { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART), + .config_needed = true, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8822cs_fw", + .cfg_name = "rtl_bt/rtl8822cs_config", + .hw_info = "rtl8822cs" }, + + /* 8822C with USB interface */ + { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8822cu_fw", + .cfg_name = "rtl_bt/rtl8822cu_config", + .hw_info = "rtl8822cu" }, + + /* 8822B */ + { IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB), + .config_needed = true, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8822b_fw", + .cfg_name = "rtl_bt/rtl8822b_config", + .hw_info = "rtl8822bu" }, + + /* 8852A */ + { IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8852au_fw", + .cfg_name = "rtl_bt/rtl8852au_config", + .hw_info = "rtl8852au" }, + + /* 8852B with UART interface */ + { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_UART), + .config_needed = true, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8852bs_fw", + .cfg_name = "rtl_bt/rtl8852bs_config", + .hw_info = "rtl8852bs" }, + + /* 8852B */ + { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8852bu_fw", + .cfg_name = "rtl_bt/rtl8852bu_config", + .hw_info = "rtl8852bu" }, + + /* 8852C */ + { IC_INFO(RTL_ROM_LMP_8852A, 0xc, 0xc, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .has_msft_ext = true, + .fw_name = "rtl_bt/rtl8852cu_fw", + .cfg_name = "rtl_bt/rtl8852cu_config", + .hw_info = "rtl8852cu" }, + + /* 8851B */ + { IC_INFO(RTL_ROM_LMP_8851B, 0xb, 0xc, HCI_USB), + .config_needed = false, + .has_rom_version = true, + .has_msft_ext = false, + .fw_name = "rtl_bt/rtl8851bu_fw", + .cfg_name = "rtl_bt/rtl8851bu_config", + .hw_info = "rtl8851bu" }, + }; + +static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev, + u8 hci_ver, u8 hci_bus, + u8 chip_type) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) { + if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) && + (ic_id_table[i].lmp_subver != lmp_subver)) + continue; + if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) && + (ic_id_table[i].hci_rev != hci_rev)) + continue; + if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) && + (ic_id_table[i].hci_ver != hci_ver)) + continue; + if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) && + (ic_id_table[i].hci_bus != hci_bus)) + continue; + if ((ic_id_table[i].match_flags & IC_MATCH_FL_CHIP_TYPE) && + (ic_id_table[i].chip_type != chip_type)) + continue; + + break; + } + if (i >= ARRAY_SIZE(ic_id_table)) + return NULL; + + return &ic_id_table[i]; +} + +static struct sk_buff *btrtl_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)) { + rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)", + PTR_ERR(skb)); + return skb; + } + + if (skb->len != sizeof(struct hci_rp_read_local_version)) { + rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch"); + kfree_skb(skb); + return ERR_PTR(-EIO); + } + + return skb; +} + +static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version) +{ + struct rtl_rom_version_evt *rom_version; + struct sk_buff *skb; + + /* Read RTL ROM version command */ + skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + rtl_dev_err(hdev, "Read ROM version failed (%ld)", + PTR_ERR(skb)); + return PTR_ERR(skb); + } + + if (skb->len != sizeof(*rom_version)) { + rtl_dev_err(hdev, "version event length mismatch"); + kfree_skb(skb); + return -EIO; + } + + rom_version = (struct rtl_rom_version_evt *)skb->data; + rtl_dev_info(hdev, "rom_version status=%x version=%x", + rom_version->status, rom_version->version); + + *version = rom_version->version; + + kfree_skb(skb); + return 0; +} + +static int btrtl_vendor_read_reg16(struct hci_dev *hdev, + struct rtl_vendor_cmd *cmd, u8 *rp) +{ + struct sk_buff *skb; + int err = 0; + + skb = __hci_cmd_sync(hdev, 0xfc61, sizeof(*cmd), cmd, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + rtl_dev_err(hdev, "RTL: Read reg16 failed (%d)", err); + return err; + } + + if (skb->len != 3 || skb->data[0]) { + bt_dev_err(hdev, "RTL: Read reg16 length mismatch"); + kfree_skb(skb); + return -EIO; + } + + if (rp) + memcpy(rp, skb->data + 1, 2); + + kfree_skb(skb); + + return 0; +} + +static void *rtl_iov_pull_data(struct rtl_iovec *iov, u32 len) +{ + void *data = iov->data; + + if (iov->len < len) + return NULL; + + iov->data += len; + iov->len -= len; + + return data; +} + +static void btrtl_insert_ordered_subsec(struct rtl_subsection *node, + struct btrtl_device_info *btrtl_dev) +{ + struct list_head *pos; + struct list_head *next; + struct rtl_subsection *subsec; + + list_for_each_safe(pos, next, &btrtl_dev->patch_subsecs) { + subsec = list_entry(pos, struct rtl_subsection, list); + if (subsec->prio >= node->prio) + break; + } + __list_add(&node->list, pos->prev, pos); +} + +static int btrtl_parse_section(struct hci_dev *hdev, + struct btrtl_device_info *btrtl_dev, u32 opcode, + u8 *data, u32 len) +{ + struct rtl_section_hdr *hdr; + struct rtl_subsection *subsec; + struct rtl_common_subsec *common_subsec; + struct rtl_sec_hdr *sec_hdr; + int i; + u8 *ptr; + u16 num_subsecs; + u32 subsec_len; + int rc = 0; + struct rtl_iovec iov = { + .data = data, + .len = len, + }; + + hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); + if (!hdr) + return -EINVAL; + num_subsecs = le16_to_cpu(hdr->num); + + for (i = 0; i < num_subsecs; i++) { + common_subsec = rtl_iov_pull_data(&iov, sizeof(*common_subsec)); + if (!common_subsec) + break; + subsec_len = le32_to_cpu(common_subsec->len); + + rtl_dev_dbg(hdev, "subsec, eco 0x%02x, len %08x", + common_subsec->eco, subsec_len); + + ptr = rtl_iov_pull_data(&iov, subsec_len); + if (!ptr) + break; + + if (common_subsec->eco != btrtl_dev->rom_version + 1) + continue; + + switch (opcode) { + case RTL_PATCH_SECURITY_HEADER: + sec_hdr = (void *)common_subsec; + if (sec_hdr->key_id != btrtl_dev->key_id) + continue; + break; + } + + subsec = kzalloc(sizeof(*subsec), GFP_KERNEL); + if (!subsec) + return -ENOMEM; + subsec->opcode = opcode; + subsec->prio = common_subsec->prio; + subsec->len = subsec_len; + subsec->data = ptr; + btrtl_insert_ordered_subsec(subsec, btrtl_dev); + rc += subsec_len; + } + + return rc; +} + +static int rtlbt_parse_firmware_v2(struct hci_dev *hdev, + struct btrtl_device_info *btrtl_dev, + unsigned char **_buf) +{ + struct rtl_epatch_header_v2 *hdr; + int rc; + u8 reg_val[2]; + u8 key_id; + u32 num_sections; + struct rtl_section *section; + struct rtl_subsection *entry, *tmp; + u32 section_len; + u32 opcode; + int len = 0; + int i; + u8 *ptr; + struct rtl_iovec iov = { + .data = btrtl_dev->fw_data, + .len = btrtl_dev->fw_len - 7, /* Cut the tail */ + }; + + rc = btrtl_vendor_read_reg16(hdev, RTL_SEC_PROJ, reg_val); + if (rc < 0) + return -EIO; + key_id = reg_val[0]; + + rtl_dev_dbg(hdev, "%s: key id %u", __func__, key_id); + + btrtl_dev->key_id = key_id; + + hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); + if (!hdr) + return -EINVAL; + num_sections = le32_to_cpu(hdr->num_sections); + + rtl_dev_dbg(hdev, "FW version %08x-%08x", *((u32 *)hdr->fw_version), + *((u32 *)(hdr->fw_version + 4))); + + for (i = 0; i < num_sections; i++) { + section = rtl_iov_pull_data(&iov, sizeof(*section)); + if (!section) + break; + section_len = le32_to_cpu(section->len); + opcode = le32_to_cpu(section->opcode); + + rtl_dev_dbg(hdev, "opcode 0x%04x", section->opcode); + + ptr = rtl_iov_pull_data(&iov, section_len); + if (!ptr) + break; + + switch (opcode) { + case RTL_PATCH_SNIPPETS: + rc = btrtl_parse_section(hdev, btrtl_dev, opcode, + ptr, section_len); + break; + case RTL_PATCH_SECURITY_HEADER: + /* If key_id from chip is zero, ignore all security + * headers. + */ + if (!key_id) + break; + rc = btrtl_parse_section(hdev, btrtl_dev, opcode, + ptr, section_len); + break; + case RTL_PATCH_DUMMY_HEADER: + rc = btrtl_parse_section(hdev, btrtl_dev, opcode, + ptr, section_len); + break; + default: + rc = 0; + break; + } + if (rc < 0) { + rtl_dev_err(hdev, "RTL: Parse section (%u) err %d", + opcode, rc); + return rc; + } + len += rc; + } + + if (!len) + return -ENODATA; + + /* Allocate mem and copy all found subsecs. */ + ptr = kvmalloc(len, GFP_KERNEL); + if (!ptr) + return -ENOMEM; + + len = 0; + list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { + rtl_dev_dbg(hdev, "RTL: opcode %08x, addr %p, len 0x%x", + entry->opcode, entry->data, entry->len); + memcpy(ptr + len, entry->data, entry->len); + len += entry->len; + } + + if (!len) + return -EPERM; + + *_buf = ptr; + return len; +} + +static int rtlbt_parse_firmware(struct hci_dev *hdev, + struct btrtl_device_info *btrtl_dev, + unsigned char **_buf) +{ + static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 }; + struct btrealtek_data *coredump_info = hci_get_priv(hdev); + struct rtl_epatch_header *epatch_info; + unsigned char *buf; + int i, len; + size_t min_size; + u8 opcode, length, data; + int project_id = -1; + const unsigned char *fwptr, *chip_id_base; + const unsigned char *patch_length_base, *patch_offset_base; + u32 patch_offset = 0; + u16 patch_length, num_patches; + static const struct { + __u16 lmp_subver; + __u8 id; + } project_id_to_lmp_subver[] = { + { RTL_ROM_LMP_8723A, 0 }, + { RTL_ROM_LMP_8723B, 1 }, + { RTL_ROM_LMP_8821A, 2 }, + { RTL_ROM_LMP_8761A, 3 }, + { RTL_ROM_LMP_8703B, 7 }, + { RTL_ROM_LMP_8822B, 8 }, + { RTL_ROM_LMP_8723B, 9 }, /* 8723D */ + { RTL_ROM_LMP_8821A, 10 }, /* 8821C */ + { RTL_ROM_LMP_8822B, 13 }, /* 8822C */ + { RTL_ROM_LMP_8761A, 14 }, /* 8761B */ + { RTL_ROM_LMP_8852A, 18 }, /* 8852A */ + { RTL_ROM_LMP_8852A, 20 }, /* 8852B */ + { RTL_ROM_LMP_8852A, 25 }, /* 8852C */ + { RTL_ROM_LMP_8851B, 36 }, /* 8851B */ + }; + + if (btrtl_dev->fw_len <= 8) + return -EINVAL; + + if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) + min_size = sizeof(struct rtl_epatch_header) + + sizeof(extension_sig) + 3; + else if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) + min_size = sizeof(struct rtl_epatch_header_v2) + + sizeof(extension_sig) + 3; + else + return -EINVAL; + + 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 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) { + btrtl_dev->project_id = project_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; + } + + if (memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8) != 0) { + if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) + return rtlbt_parse_firmware_v2(hdev, btrtl_dev, _buf); + rtl_dev_err(hdev, "bad EPATCH signature"); + return -EINVAL; + } + + epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data; + 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); + coredump_info->rtl_dump.fw_version = le32_to_cpu(epatch_info->fw_version); + + /* 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; + int j = 0; + 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; + + dl_cmd->index = j++; + if (dl_cmd->index == 0x7f) + j = 1; + + if (i == (frag_num - 1)) { + dl_cmd->index |= 0x80; /* data end */ + frag_len = fw_len % RTL_FRAG_LEN; + } + rtl_dev_dbg(hdev, "download fw (%d/%d). index = %d", i, + frag_num, dl_cmd->index); + 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; +} + +static void btrtl_coredump(struct hci_dev *hdev) +{ + static const u8 param[] = { 0x00, 0x00 }; + + __hci_cmd_send(hdev, RTL_VSC_OP_COREDUMP, sizeof(param), param); +} + +static void btrtl_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb) +{ + struct btrealtek_data *coredump_info = hci_get_priv(hdev); + char buf[80]; + + if (coredump_info->rtl_dump.controller) + snprintf(buf, sizeof(buf), "Controller Name: %s\n", + coredump_info->rtl_dump.controller); + else + snprintf(buf, sizeof(buf), "Controller Name: Unknown\n"); + skb_put_data(skb, buf, strlen(buf)); + + snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n", + coredump_info->rtl_dump.fw_version); + skb_put_data(skb, buf, strlen(buf)); + + snprintf(buf, sizeof(buf), "Driver: %s\n", coredump_info->rtl_dump.driver_name); + skb_put_data(skb, buf, strlen(buf)); + + snprintf(buf, sizeof(buf), "Vendor: Realtek\n"); + skb_put_data(skb, buf, strlen(buf)); +} + +static void btrtl_register_devcoredump_support(struct hci_dev *hdev) +{ + hci_devcd_register(hdev, btrtl_coredump, btrtl_dmp_hdr, NULL); + +} + +void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name) +{ + struct btrealtek_data *coredump_info = hci_get_priv(hdev); + + coredump_info->rtl_dump.driver_name = driver_name; +} +EXPORT_SYMBOL_GPL(btrtl_set_driver_name); + +static bool rtl_has_chip_type(u16 lmp_subver) +{ + switch (lmp_subver) { + case RTL_ROM_LMP_8703B: + return true; + default: + break; + } + + return false; +} + +static int rtl_read_chip_type(struct hci_dev *hdev, u8 *type) +{ + struct rtl_chip_type_evt *chip_type; + struct sk_buff *skb; + const unsigned char cmd_buf[] = {0x00, 0x94, 0xa0, 0x00, 0xb0}; + + /* Read RTL chip type command */ + skb = __hci_cmd_sync(hdev, 0xfc61, 5, cmd_buf, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + rtl_dev_err(hdev, "Read chip type failed (%ld)", + PTR_ERR(skb)); + return PTR_ERR(skb); + } + + chip_type = skb_pull_data(skb, sizeof(*chip_type)); + if (!chip_type) { + rtl_dev_err(hdev, "RTL chip type event length mismatch"); + kfree_skb(skb); + return -EIO; + } + + rtl_dev_info(hdev, "chip_type status=%x type=%x", + chip_type->status, chip_type->type); + + *type = chip_type->type & 0x0f; + + kfree_skb(skb); + return 0; +} + +void btrtl_free(struct btrtl_device_info *btrtl_dev) +{ + struct rtl_subsection *entry, *tmp; + + kvfree(btrtl_dev->fw_data); + kvfree(btrtl_dev->cfg_data); + + list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { + list_del(&entry->list); + kfree(entry); + } + + kfree(btrtl_dev); +} +EXPORT_SYMBOL_GPL(btrtl_free); + +struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, + const char *postfix) +{ + struct btrealtek_data *coredump_info = hci_get_priv(hdev); + struct btrtl_device_info *btrtl_dev; + struct sk_buff *skb; + struct hci_rp_read_local_version *resp; + struct hci_command_hdr *cmd; + char fw_name[40]; + char cfg_name[40]; + u16 hci_rev, lmp_subver; + u8 hci_ver, lmp_ver, chip_type = 0; + int ret; + u8 reg_val[2]; + + btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL); + if (!btrtl_dev) { + ret = -ENOMEM; + goto err_alloc; + } + + INIT_LIST_HEAD(&btrtl_dev->patch_subsecs); + +check_version: + ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_SUBVER, reg_val); + if (ret < 0) + goto err_free; + lmp_subver = get_unaligned_le16(reg_val); + + if (lmp_subver == RTL_ROM_LMP_8822B) { + ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_REV, reg_val); + if (ret < 0) + goto err_free; + hci_rev = get_unaligned_le16(reg_val); + + /* 8822E */ + if (hci_rev == 0x000e) { + hci_ver = 0x0c; + lmp_ver = 0x0c; + btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, + hci_ver, hdev->bus, + chip_type); + goto next; + } + } + + 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; + + hci_ver = resp->hci_ver; + hci_rev = le16_to_cpu(resp->hci_rev); + lmp_ver = resp->lmp_ver; + lmp_subver = le16_to_cpu(resp->lmp_subver); + + kfree_skb(skb); + + if (rtl_has_chip_type(lmp_subver)) { + ret = rtl_read_chip_type(hdev, &chip_type); + if (ret) + goto err_free; + } + + btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver, + hdev->bus, chip_type); + +next: + rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x", + hci_ver, hci_rev, + lmp_ver, lmp_subver); + + if (!btrtl_dev->ic_info && !btrtl_dev->drop_fw) + btrtl_dev->drop_fw = true; + else + btrtl_dev->drop_fw = false; + + if (btrtl_dev->drop_fw) { + skb = bt_skb_alloc(sizeof(*cmd), GFP_KERNEL); + if (!skb) + goto err_free; + + cmd = skb_put(skb, HCI_COMMAND_HDR_SIZE); + cmd->opcode = cpu_to_le16(0xfc66); + cmd->plen = 0; + + hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; + + ret = hdev->send(hdev, skb); + if (ret < 0) { + bt_dev_err(hdev, "sending frame failed (%d)", ret); + kfree_skb(skb); + goto err_free; + } + + /* Ensure the above vendor command is sent to controller and + * process has done. + */ + msleep(200); + + goto check_version; + } + + 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; + } + + if (!btrtl_dev->ic_info->fw_name) { + ret = -ENOMEM; + goto err_free; + } + + btrtl_dev->fw_len = -EIO; + if (lmp_subver == RTL_ROM_LMP_8852A && hci_rev == 0x000c) { + snprintf(fw_name, sizeof(fw_name), "%s_v2.bin", + btrtl_dev->ic_info->fw_name); + btrtl_dev->fw_len = rtl_load_file(hdev, fw_name, + &btrtl_dev->fw_data); + } + + if (btrtl_dev->fw_len < 0) { + snprintf(fw_name, sizeof(fw_name), "%s.bin", + btrtl_dev->ic_info->fw_name); + btrtl_dev->fw_len = rtl_load_file(hdev, 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; + } + } + + /* The following chips supports the Microsoft vendor extension, + * therefore set the corresponding VsMsftOpCode. + */ + if (btrtl_dev->ic_info->has_msft_ext) + hci_set_msft_opcode(hdev, 0xFCF0); + + if (btrtl_dev->ic_info) + coredump_info->rtl_dump.controller = btrtl_dev->ic_info->hw_info; + + 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) +{ + int err = 0; + + /* 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"); + err = 0; + goto done; + } + + switch (btrtl_dev->ic_info->lmp_subver) { + case RTL_ROM_LMP_8723A: + err = btrtl_setup_rtl8723a(hdev, btrtl_dev); + break; + case RTL_ROM_LMP_8723B: + case RTL_ROM_LMP_8821A: + case RTL_ROM_LMP_8761A: + case RTL_ROM_LMP_8822B: + case RTL_ROM_LMP_8852A: + case RTL_ROM_LMP_8703B: + case RTL_ROM_LMP_8851B: + err = btrtl_setup_rtl8723b(hdev, btrtl_dev); + break; + default: + rtl_dev_info(hdev, "assuming no firmware upload needed"); + break; + } + +done: + btrtl_register_devcoredump_support(hdev); + + return err; +} +EXPORT_SYMBOL_GPL(btrtl_download_firmware); + +void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev) +{ + /* Enable controller to do both LE scan and BR/EDR inquiry + * simultaneously. + */ + set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); + + /* Enable central-peripheral role (able to create new connections with + * an existing connection in slave role). + */ + /* Enable WBS supported for the specific Realtek devices. */ + switch (btrtl_dev->project_id) { + case CHIP_ID_8822C: + case CHIP_ID_8852A: + case CHIP_ID_8852B: + case CHIP_ID_8852C: + case CHIP_ID_8851B: + set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); + set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); + + /* RTL8852C needs to transmit mSBC data continuously without + * the zero length of USB packets for the ALT 6 supported chips + */ + if (btrtl_dev->project_id == CHIP_ID_8852C) + btrealtek_set_flag(hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP); + + if (btrtl_dev->project_id == CHIP_ID_8852A || + btrtl_dev->project_id == CHIP_ID_8852C) + set_bit(HCI_QUIRK_USE_MSFT_EXT_ADDRESS_FILTER, &hdev->quirks); + + hci_set_aosp_capable(hdev); + break; + default: + rtl_dev_dbg(hdev, "Central-peripheral role not enabled."); + rtl_dev_dbg(hdev, "WBS supported not enabled."); + break; + } + + if (!btrtl_dev->ic_info) + return; + + switch (btrtl_dev->ic_info->lmp_subver) { + case RTL_ROM_LMP_8703B: + /* 8723CS reports two pages for local ext features, + * but it doesn't support any features from page 2 - + * it either responds with garbage or with error status + */ + set_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, + &hdev->quirks); + break; + default: + break; + } +} +EXPORT_SYMBOL_GPL(btrtl_set_quirks); + +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_set_quirks(hdev, btrtl_dev); + + btrtl_free(btrtl_dev); + 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/rtl8723cs_cg_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8723d_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8723d_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/rtl8761b_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8761b_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8761bu_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8761bu_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8821a_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8821a_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8821c_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8821c_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8821cs_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8821cs_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8822b_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8822b_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8822cs_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8822cs_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8822cu_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8822cu_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8851bu_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8851bu_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852au_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852au_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852bs_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852bs_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852bu_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852bu_config.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin"); |