linux-kernel - [PATCH v5 2/3] Bluetooth: btrtl: Add the support for RTL8922D

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Message-ID: <20251210123407.3971233-2-hildawu@realtek.com>
Date: Wed, 10 Dec 2025 20:34:06 +0800
From: Hilda Wu <hildawu@...ltek.com>
To: <marcel@...tmann.org>
CC: <luiz.dentz@...il.com>, <linux-bluetooth@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <alex_lu@...lsil.com.cn>,
        <jason_mao@...lsil.com.cn>, <zoey_zhou@...lsil.com.cn>,
        <max.chou@...ltek.com>
Subject: [PATCH v5 2/3] Bluetooth: btrtl: Add the support for RTL8922D

Add the support for RTL8922D BT controller on USB interface.
The necessary firmware will be submitted to linux-firmware project.

The device info from /sys/kernel/debug/usb/devices as below.

T:  Bus=01 Lev=01 Prnt=01 Port=07 Cnt=03 Dev#=  4 Spd=12   MxCh= 0
D:  Ver= 1.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0bda ProdID=892d Rev= 0.00
S:  Manufacturer=Realtek
S:  Product=Bluetoo
S:  SerialNumber=00E04C885A01
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
I:  If#= 1 Alt= 6 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  63 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  63 Ivl=1ms

Signed-off-by: Alex Lu <alex_lu@...lsil.com.cn>
Signed-off-by: Zoey Zhou <zoey_zhou@...lsil.com.cn>
Signed-off-by: Hilda Wu <hildawu@...ltek.com>
---
 drivers/bluetooth/btrtl.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index c90aa4ff5918..313005f37e33 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -90,6 +90,7 @@ enum btrtl_chip_id {
 	CHIP_ID_8922A = 44,
 	CHIP_ID_8852BT = 47,
 	CHIP_ID_8761C = 51,
+	CHIP_ID_8922D = 55,
 };
 
 struct id_table {
@@ -357,6 +358,15 @@ static const struct id_table ic_id_table[] = {
 	  .fw_name  = "rtl_bt/rtl8852btu_fw",
 	  .cfg_name = "rtl_bt/rtl8852btu_config",
 	  .hw_info  = "rtl8852btu" },
+
+	/* 8922DU */
+	{ IC_INFO(RTL_ROM_LMP_8922A, 0xd, 0xe, HCI_USB),
+	  .config_needed = false,
+	  .has_rom_version = true,
+	  .has_msft_ext = true,
+	  .fw_name  = "rtl_bt/rtl8922du_fw",
+	  .cfg_name = "rtl_bt/rtl8922du_config",
+	  .hw_info  = "rtl8922du" },
 	};
 
 static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev,
@@ -1952,6 +1962,7 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev)
 	case CHIP_ID_8922A:
 	case CHIP_ID_8852BT:
 	case CHIP_ID_8761C:
+	case CHIP_ID_8922D:
 		hci_set_quirk(hdev, HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED);
 
 		/* RTL8852C needs to transmit mSBC data continuously without
@@ -2229,3 +2240,5 @@ MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin");
 MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin");
 MODULE_FIRMWARE("rtl_bt/rtl8922au_fw.bin");
 MODULE_FIRMWARE("rtl_bt/rtl8922au_config.bin");
+MODULE_FIRMWARE("rtl_bt/rtl8922du_fw.bin");
+MODULE_FIRMWARE("rtl_bt/rtl8922du_config.bin");
-- 
2.34.1