Bluetooth: btrtl: Add support for RTL8852C

Add the support for RTL8852C BT controller on USB interface.
The necessary firmware file will be submitted to linux-firmware.

Signed-off-by: Max Chou <max.chou@realtek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btrtl.c

@@ -50,6 +50,7 @@ enum btrtl_chip_id {
 	CHIP_ID_8761B,
 	CHIP_ID_8852A = 18,
 	CHIP_ID_8852B = 20,
+	CHIP_ID_8852C = 25,
 };
 
 struct id_table {
@@ -196,6 +197,14 @@ static const struct id_table ic_id_table[] = {
 	  .has_msft_ext = true,
 	  .fw_name  = "rtl_bt/rtl8852bu_fw.bin",
 	  .cfg_name = "rtl_bt/rtl8852bu_config" },
+
+	/* 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.bin",
+	  .cfg_name = "rtl_bt/rtl8852cu_config" },
 	};
 
 static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev,
@@ -305,6 +314,7 @@ static int rtlbt_parse_firmware(struct hci_dev *hdev,
 		{ RTL_ROM_LMP_8761A, 14 },	/* 8761B */
 		{ RTL_ROM_LMP_8852A, 18 },	/* 8852A */
 		{ RTL_ROM_LMP_8852A, 20 },	/* 8852B */
+		{ RTL_ROM_LMP_8852A, 25 },	/* 8852C */
 	};
 
 	min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
@@ -768,6 +778,7 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev)
 	case CHIP_ID_8822C:
 	case CHIP_ID_8852A:
 	case CHIP_ID_8852B:
+	case CHIP_ID_8852C:
 		set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
 		set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
 		hci_set_aosp_capable(hdev);
@@ -947,3 +958,5 @@ MODULE_FIRMWARE("rtl_bt/rtl8852au_fw.bin");
 MODULE_FIRMWARE("rtl_bt/rtl8852au_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_config.bin");