# Bluetooth configuration options

# Copyright (c) 2016 Intel Corporation
# Copyright (c) 2021 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

menuconfig BT
	bool "Bluetooth"
	# Some BT threads use co-op priorities to implement critical sections,
	# will need some refactoring to work on SMP systems.
	depends on !SMP
	select NET_BUF
	help
	  This option enables Bluetooth support.

if BT

choice BT_STACK_SELECTION
	prompt "Bluetooth Stack Selection"
	default BT_HCI
	help
	  Select the Bluetooth stack to compile.

config BT_HCI
	bool "HCI-based"
	help
	  HCI-based stack with optional host & controller parts and an
	  HCI driver in between.

config BT_CUSTOM
	bool "Custom"
	help
	  Select a custom, non-HCI based stack. If you're not sure what
	  this is, you probably want the HCI-based stack instead.

endchoice

# The Bluetooth subsystem requires the system workqueue to execute at
# a cooperative priority.
config SYSTEM_WORKQUEUE_PRIORITY
	range -256 -1

if BT_HCI

config BT_HCI_RAW
	bool "RAW HCI access"
	help
	  This option allows to access Bluetooth controller
	  from the application with the RAW HCI protocol.

config BT_HCI_RAW_H4
	bool "RAW HCI H:4 transport"
	help
	  This option enables HCI RAW access to work over an H:4
	  transport, note that it still need to be selected at runtime.

config BT_HCI_RAW_H4_ENABLE
	bool "RAW HCI H:4 transport enable"
	depends on BT_HCI_RAW_H4
	help
	  This option enables use of H:4 transport for HCI RAW access at
	  build time.

config BT_HCI_RAW_CMD_EXT
	bool "RAW HCI Command Extension"
	help
	  This option enables HCI RAW command extension so the driver can
	  register it own command table extension.

config BT_PERIPHERAL
	bool "Peripheral Role support"
	select BT_BROADCASTER
	select BT_CONN
	default y if BT_HCI_RAW
	help
	  Select this for LE Peripheral role support.

config BT_CENTRAL
	bool "Central Role support"
	select BT_OBSERVER
	select BT_CONN
	default y if BT_HCI_RAW
	help
	  Select this for LE Central role support.

config BT_BROADCASTER
	bool "Broadcaster Role support"
	default y if !BT_OBSERVER
	help
	  Select this for LE Broadcaster role support.

config BT_OBSERVER
	bool "Observer Role support"
	help
	  Select this for LE Observer role support.

rsource "Kconfig.adv"

config BT_CONN
	bool

config BT_MAX_CONN
	int "Maximum number of simultaneous connections"
	depends on BT_CONN
	range 1 250
	default 2 if BT_MESH_GATT_CLIENT
	default 1
	help
	  Maximum number of simultaneous Bluetooth connections
	  supported.

config BT_CONN_TX
	bool
	default BT_CONN || BT_ISO_TX
	help
	  Hidden configuration that is true if ACL or broadcast ISO is enabled

if BT_CONN
config BT_HCI_ACL_FLOW_CONTROL
	bool "Controller to Host ACL flow control support"
	# Enable if building a Host-only build
	default y if !HAS_BT_CTLR && !BT_STM32_IPM && !BT_ESP32  && !BT_STM32WBA
	# Enable if building a Controller-only build
	default y if BT_HCI_RAW
	select POLL
	help
	  Enable support for throttling ACL buffers from the controller
	  to the host. This is particularly useful when the host and
	  controller are on separate cores since it ensures that we do
	  not run out of incoming ACL buffers.

config BT_REMOTE_VERSION
	bool "Allow fetching of remote version"
	# Enable if building a Controller-only build
	default y if BT_HCI_RAW
	help
	  Enable this to get access to the remote version in the Controller and
	  in the Host through bt_conn_get_remote_info(). The fields in question
	  can then be found in the bt_conn_remote_info struct.

config BT_PHY_UPDATE
	bool "PHY Update"
	default y
	depends on !HAS_BT_CTLR || BT_CTLR_PHY_UPDATE_SUPPORT
	help
	  Enable support for Bluetooth 5.0 PHY Update Procedure.

config BT_DATA_LEN_UPDATE
	bool "Data Length Update"
	default y if ((BT_BUF_ACL_TX_SIZE > 27) || (BT_BUF_ACL_RX_SIZE > 27))
	depends on !HAS_BT_CTLR || BT_CTLR_DATA_LEN_UPDATE_SUPPORT
	help
	  Enable support for Bluetooth v4.2 LE Data Length Update procedure.

config BT_PER_ADV_SYNC_TRANSFER_RECEIVER
	bool "Periodic Advertising Sync Transfer receiver"
	depends on BT_PER_ADV_SYNC && BT_CONN && (!HAS_BT_CTLR || BT_CTLR_SYNC_TRANSFER_RECEIVER_SUPPORT)

config BT_PER_ADV_SYNC_TRANSFER_SENDER
	bool "Periodic Advertising Sync Transfer sender"
	depends on (BT_PER_ADV_SYNC || BT_PER_ADV) && BT_CONN && (!HAS_BT_CTLR || BT_CTLR_SYNC_TRANSFER_SENDER_SUPPORT)

config BT_SCA_UPDATE
	bool "Sleep Clock Accuracy Update"
	default y if BT_ISO_PERIPHERAL || BT_ISO_CENTRAL
	depends on !HAS_BT_CTLR || BT_CTLR_SCA_UPDATE_SUPPORT
	help
	  Enable support for Bluetooth 5.1 Sleep Clock Accuracy Update Procedure

config BT_TRANSMIT_POWER_CONTROL
	bool "LE Power Control"
	depends on !HAS_BT_CTLR || BT_CTLR_LE_POWER_CONTROL_SUPPORT
	help
	  Enable support for LE Power Control Request feature that is defined in the
	  Bluetooth Core specification, Version 5.4 | Vol 6, Part B, Section 4.6.31.

config BT_PATH_LOSS_MONITORING
	bool "LE Path Loss Monitoring"
	depends on !HAS_BT_CTLR || BT_CTLR_LE_PATH_LOSS_MONITORING_SUPPORT
	help
	  Enable support for LE Path Loss Monitoring feature that is defined in the
	  Bluetooth Core specification, Version 5.4 | Vol 6, Part B, Section 4.6.32.

config BT_SUBRATING
	bool "LE Connection Subrating"
	depends on !HAS_BT_CTLR || BT_CTLR_SUBRATING_SUPPORT
	help
	  Enable support for LE Connection Subrating feature that is defined in the
	  Bluetooth Core specification, Version 5.4 | Vol 6, Part B, Section 4.6.35.

config BT_CHANNEL_SOUNDING
	bool "Channel Sounding [EXPERIMENTAL]"
	select EXPERIMENTAL
	depends on !HAS_BT_CTLR || BT_CTLR_CHANNEL_SOUNDING_SUPPORT
	help
	  Enable support for Bluetooth 6.0 Channel Sounding feature.

config BT_CHANNEL_SOUNDING_TEST
	bool "Channel Sounding Test [EXPERIMENTAL]"
	select EXPERIMENTAL
	depends on BT_CHANNEL_SOUNDING
	help
	  Enable support for Channel Sounding test mode.

config BT_CHANNEL_SOUNDING_REASSEMBLY_BUFFER_SIZE
	int "Subevent result reassembly buffer size"
	depends on BT_CHANNEL_SOUNDING
	range 239 5600
	default 5600
	help
	  When the results for a CS subevent cannot fit into a single HCI event,
	  it will be split up into multiple events and consequently, reassembled into a
	  full CS subevent. This config sets the size of the reassembly buffer.

config BT_CHANNEL_SOUNDING_REASSEMBLY_BUFFER_CNT
	int "Subevent result reassembly buffer count"
	depends on BT_CHANNEL_SOUNDING
	range 1 BT_MAX_CONN
	default 1
	help
	  Controls the number of the reassembly buffers for CS subevent
	  results. Each running CS procedure is allocated one buffer and the
	  number of concurrent CS procedures is limited by this value.

endif # BT_CONN

config BT_ISO
	bool

config BT_ISO_TX
	bool

config BT_ISO_RX
	bool

#TODO : Split between client(central) and server(peripheral)
config BT_ISO_UNICAST
	bool
	depends on BT_CONN
	select BT_ISO
	select BT_ISO_TX
	select BT_ISO_RX
	help
	  This option enables support for Bluetooth Unicast
	  Isochronous channels.

config BT_ISO_PERIPHERAL
	bool "Bluetooth Isochronous Channel Unicast Peripheral Support"
	depends on !HAS_BT_CTLR || BT_CTLR_PERIPHERAL_ISO_SUPPORT
	depends on BT_PERIPHERAL
	select BT_ISO_UNICAST
	help
	  This option enables support for Bluetooth Unicast
	  Isochronous channels for the peripheral role.

config BT_ISO_CENTRAL
	bool "Bluetooth Isochronous Channel Unicast Central Support"
	depends on !HAS_BT_CTLR || BT_CTLR_CENTRAL_ISO_SUPPORT
	depends on BT_CENTRAL
	select BT_ISO_UNICAST
	help
	  This option enables support for Bluetooth Broadcast
	  Isochronous channels for the central role.

config BT_ISO_BROADCAST
	bool
	select BT_ISO
	select BT_EXT_ADV

config BT_ISO_BROADCASTER
	bool "Bluetooth Isochronous Broadcaster Support"
	depends on !HAS_BT_CTLR || BT_CTLR_ADV_ISO_SUPPORT
	select BT_ISO_BROADCAST
	select BT_ISO_TX
	select BT_BROADCASTER
	select BT_PER_ADV
	help
	  This option enables support for the Bluetooth Isochronous Broadcaster.

config BT_ISO_SYNC_RECEIVER
	bool "Bluetooth Isochronous Synchronized Receiver Support"
	depends on !HAS_BT_CTLR || BT_CTLR_SYNC_ISO_SUPPORT
	depends on BT_OBSERVER
	select BT_ISO_BROADCAST
	select BT_ISO_RX
	select BT_PER_ADV_SYNC
	help
	  This option enables support for the Bluetooth Isochronous
	  Synchronized Receiver.

if BT_ISO

config BT_ISO_MAX_CHAN
	int "Maximum number of simultaneous ISO channels"
	depends on BT_ISO
	default BT_MAX_CONN if BT_CONN
	default 1
	range 1 64
	help
	  Maximum number of simultaneous Bluetooth isochronous channels
	  supported.

config BT_ISO_TX_BUF_COUNT
	int "Number of Isochronous TX buffers"
	default 1
	range 1 $(UINT8_MAX)
	help
	  Number of buffers available for outgoing Isochronous channel SDUs.

config BT_ISO_TX_FRAG_COUNT
	int "Number of ISO TX fragment buffers"
	default 2
	range 0 $(UINT8_MAX)
	help
	  Number of buffers available for fragments of TX buffers. Warning:
	  setting this to 0 means that the application must ensure that
	  queued TX buffers never need to be fragmented, i.e. that the
	  controller's buffer size is large enough. If this is not ensured,
	  and there are no dedicated fragment buffers, a deadlock may occur.
	  In most cases the default value of 2 is a safe bet.

config BT_ISO_TX_MTU
	int "Maximum supported MTU for Isochronous TX buffers"
	range 1 4095
	default 247
	help
	  Maximum MTU for Isochronous channels TX buffers.
	  This is the actual data payload. It doesn't include the optional
	  HCI ISO Data packet fields (e.g. `struct bt_hci_iso_sdu_ts_hdr`).
	  Set this value to 247 to fit 247 bytes of data within a single
	  HCI ISO Data packet with Data_Total_Length of 255, utilizing
	  timestamps.

config BT_ISO_RX_BUF_COUNT
	int "Number of Isochronous RX buffers"
	default 1
	range 1 $(UINT8_MAX)
	help
	  Number of buffers available for incoming Isochronous channel SDUs.

config BT_ISO_RX_MTU
	int "Maximum supported MTU for Isochronous RX buffers"
	default 251
	range 23 4095
	help
	  Maximum MTU for Isochronous channels RX buffers.
	  This is the actual data payload. It doesn't include the optional
	  HCI ISO Data packet fields (e.g. `struct bt_hci_iso_sdu_ts_hdr`)

config BT_ISO_TEST_PARAMS
	bool "ISO test parameters support"
	help
	  Enabling advanced ISO parameters will allow the use of the ISO test
	  parameters for creating a CIG or a BIG. These test parameters were
	  intended for testing, but can be used to allow the host to set more
	  settings that are otherwise usually controlled by the controller.

if BT_ISO_UNICAST

config BT_ISO_MAX_CIG
	int "Maximum number of Connected Isochronous Groups (CIGs) to support"
	default 1
	help
	  Maximum number of CIGs that are supported by the host. A CIG can be
	  used for either transmitting or receiving.

endif # BT_ISO_UNICAST

if BT_ISO_BROADCAST

config BT_ISO_MAX_BIG
	int "Maximum number of Broadcast Isochronous Groups (BIGs) to support"
	default 1
	range 1 BT_EXT_ADV_MAX_ADV_SET
	help
	  Maximum number of BIGs that are supported by the host. A BIG can be
	  used for either transmitting or receiving, but not at the same time.

endif # BT_ISO_BROADCAST
endif # BT_ISO

rsource "common/Kconfig"
rsource "host/Kconfig"
rsource "controller/Kconfig"
rsource "crypto/Kconfig"
rsource "lib/Kconfig"
rsource "Kconfig.logging"

config BT_SHELL
	bool "Bluetooth shell"
	select SHELL
	select BT_PRIVATE_SHELL
	select BT_TICKER_NEXT_SLOT_GET if BT_LL_SW_SPLIT
	help
	  Activate shell module that provides Bluetooth commands to the
	  console.

endif # BT_HCI

config BT_COMPANY_ID
	hex "Company Id"
	default 0x05F1
	range 0x0000 0xFFFF
	help
	  Set the Bluetooth Company Identifier for this device. The Linux
	  Foundation's Company Identifier (0x05F1) is the default value for
	  this option although silicon vendors and hardware manufacturers
	  can set their own. Note that the controller's Company Identifier is
	  controlled by BT_CTLR_COMPANY_ID. The full list of Bluetooth
	  Company Identifiers can be found here:
	  https://www.bluetooth.com/specifications/assigned-numbers/company-identifiers

endif # BT