# SPDX-License-Identifier: GPL-2.0-only## Bluetooth subsystem configuration# menuconfig BT	tristate "Bluetooth subsystem support"	depends on !S390	depends on RFKILL || !RFKILL	select CRC16	select CRYPTO	select CRYPTO_LIB_AES	select CRYPTO_LIB_AES_CBC_MACS	select CRYPTO_ECDH	help	  Bluetooth is low-cost, low-power, short-range wireless technology.	  It was designed as a replacement for cables and other short-range	  technologies like IrDA.  Bluetooth operates in personal area range	  that typically extends up to 10 meters.  More information about	  Bluetooth can be found at <https://www.bluetooth.com/>. 	  Linux Bluetooth subsystem consist of several layers:	     Bluetooth Core		HCI device and connection manager, scheduler		SCO audio links		L2CAP (Logical Link Control and Adaptation Protocol)		SMP (Security Manager Protocol) on LE (Low Energy) links		ISO isochronous links	     HCI Device drivers (Interface to the hardware)	     RFCOMM Module (RFCOMM Protocol)  	     BNEP Module (Bluetooth Network Encapsulation Protocol)	     HIDP Module (Human Interface Device Protocol) 	  Say Y here to compile Bluetooth support into the kernel or say M to	  compile it as module (bluetooth). 	  To use Linux Bluetooth subsystem, you will need several user-space	  utilities like hciconfig and bluetoothd.  These utilities and updates	  to Bluetooth kernel modules are provided in the BlueZ packages.  For	  more information, see <http://www.bluez.org/>. config BT_BREDR	bool "Bluetooth Classic (BR/EDR) features"	depends on BT	default y	help	  Bluetooth Classic includes support for Basic Rate (BR)	  available with Bluetooth version 1.0b or later and support	  for Enhanced Data Rate (EDR) available with Bluetooth	  version 2.0 or later. source "net/bluetooth/rfcomm/Kconfig" source "net/bluetooth/bnep/Kconfig" source "net/bluetooth/hidp/Kconfig" config BT_LE	bool "Bluetooth Low Energy (LE) features"	depends on BT	default y	help	  Bluetooth Low Energy includes support low-energy physical	  layer available with Bluetooth version 4.0 or later. config BT_LE_L2CAP_ECRED	bool "Bluetooth L2CAP Enhanced Credit Flow Control"	depends on BT_LE	default y	help	  Bluetooth Low Energy L2CAP Enhanced Credit Flow Control available with	  Bluetooth version 5.2 or later. 	  This can be overridden by passing bluetooth.enable_ecred=[1|0]	  on the kernel commandline. config BT_6LOWPAN	tristate "Bluetooth 6LoWPAN support"	depends on BT && BT_LE && 6LOWPAN	help	  IPv6 compression over Bluetooth Low Energy. config BT_LEDS	bool "Enable LED triggers"	depends on BT	depends on LEDS_CLASS	select LEDS_TRIGGERS	help	  This option selects a few LED triggers for different	  Bluetooth events. config BT_MSFTEXT	bool "Enable Microsoft extensions"	depends on BT	help	  This options enables support for the Microsoft defined HCI	  vendor extensions. config BT_AOSPEXT	bool "Enable Android Open Source Project extensions"	depends on BT	help	  This options enables support for the Android Open Source	  Project defined HCI vendor extensions. config BT_DEBUGFS	bool "Export Bluetooth internals in debugfs"	depends on BT && DEBUG_FS	default y	help	  Provide extensive information about internal Bluetooth states	  in debugfs. config BT_SELFTEST	bool "Bluetooth self testing support"	depends on BT && DEBUG_KERNEL	help	  Run self tests when initializing the Bluetooth subsystem.  This	  is a developer option and can cause significant delay when booting	  the system. 	  When the Bluetooth subsystem is built as module, then the test	  cases are run first thing at module load time.  When the Bluetooth	  subsystem is compiled into the kernel image, then the test cases	  are run late in the initcall hierarchy. config BT_SELFTEST_ECDH	bool "ECDH test cases"	depends on BT_LE && BT_SELFTEST	help	  Run test cases for ECDH cryptographic functionality used by the	  Bluetooth Low Energy Secure Connections feature. config BT_SELFTEST_SMP	bool "SMP test cases"	depends on BT_LE && BT_SELFTEST	help	  Run test cases for SMP cryptographic functionality, including both	  legacy SMP as well as the Secure Connections features. config BT_FEATURE_DEBUG	bool "Enable runtime option for debugging statements"	depends on BT && !DYNAMIC_DEBUG	help	  This provides an option to enable/disable debugging statements	  at runtime via the experimental features interface. source "drivers/bluetooth/Kconfig"