# Copyright (c) 2023 Trackunit Corporation
# SPDX-License-Identifier: Apache-2.0

menuconfig MODEM_MODULES
	bool "Modem modules"

if MODEM_MODULES

config MODEM_DEDICATED_WORKQUEUE
	bool "Use a dedicated workqueue for modem operations"

if MODEM_DEDICATED_WORKQUEUE

config MODEM_DEDICATED_WORKQUEUE_STACK_SIZE
	int "Modem dedicated workqueue stack size"
	default 1024

config MODEM_DEDICATED_WORKQUEUE_PRIORITY
	int "Modem dedicated workqueue priority"
	default SYSTEM_WORKQUEUE_PRIORITY

endif # MODEM_DEDICATED_WORKQUEUE

config MODEM_CHAT
	bool "Modem chat module"
	select RING_BUFFER
	select MODEM_PIPE

if MODEM_CHAT

config MODEM_CHAT_LOG_BUFFER_SIZE
	int "Modem chat log buffer size in bytes"
	default 128

endif

config MODEM_CMUX
	bool "Modem CMUX module"
	select MODEM_PIPE
	select RING_BUFFER
	select EVENTS
	select CRC

if MODEM_CMUX

config MODEM_CMUX_DEFAULT_MTU_127
	bool
	help
	  Hint that the default MODEM_CMUX_MTU size should be 127 bytes.

config MODEM_CMUX_MTU
	int "CMUX MTU size in bytes"
	range 16 1500
	default 127 if MODEM_CMUX_DEFAULT_MTU_127
	default 31
	help
	  Maximum Transmission Unit (MTU) size for the CMUX module.
	  Linux ldattach defaults to 127 bytes, 3GPP TS 27.010 to 31.

config MODEM_CMUX_WORK_BUFFER_SIZE_EXTRA
	int "CMUX module extra work buffer size in bytes"
	default 0
	help
	  Extra bytes to add to the work buffers used by the CMUX module.
	  The default size of these buffers is MODEM_CMUX_MTU + 7 (CMUX header size).

config MODEM_CMUX_MSC_FC_THRESHOLD
	int "Enable flow control when the DLCI ring buffer has less than this many bytes free"
	range 0 MODEM_CMUX_MTU
	default MODEM_CMUX_MTU if MODEM_CMUX_WORK_BUFFER_SIZE_EXTRA > 0
	default 0
	help
	  When the available space in a DLCI receive ring buffer is less than this
	  value, the CMUX module will send Modem Status Command frame with the
	  flow control bit set to indicate that the sender should stop sending data.
	  Flow control is released once the incoming buffer has at least MODEM_CMUX_MTU
	  bytes free again.
	  This only works if the peer supports MSC messages.
	  Disable flow control by setting this value to 0.

config MODEM_CMUX_T1_TIMEOUT
	int "CMUX T1 timeout in milliseconds"
	range 10 2550
	default 100
	help
	  Acknowledgment Timer (T1).
	  Time in milliseconds to wait for an acknowledgment before retransmitting
	  a frame.

config MODEM_CMUX_T2_TIMEOUT
	int "CMUX T2 timeout in milliseconds"
	range 20 2550
	default 300
	help
	  Response Timer for multiplexer control channel (T2).
	  Time in milliseconds to wait for a response to a multiplexer control
	  command before considering the link dead.
	  NOTE: Zephyr's CMUX implementation deviates from the 3GPP TS 27.010
	  specification by using T1 for all retry timers and T2 only for
	  a total response timeout.

config MODEM_CMUX_T3_TIMEOUT
	int "CMUX T3 timeout in seconds"
	range 1 255
	default 10
	help
	  Response Timer for wake-up procedure(T3).
	  Time in seconds before the link is considered dead.

module = MODEM_CMUX
module-str = modem_cmux
source "subsys/logging/Kconfig.template.log_config"

config MODEM_CMUX_LOG_FRAMES
	bool "Log CMUX frames"
	depends on MODEM_CMUX_LOG_LEVEL_DBG
	help
	  Enable logging of CMUX frames. This can produce a lot of log data.

endif

config MODEM_PIPE
	bool "Modem pipe module"
	select EVENTS

config MODEM_PIPELINK
	bool "Modem pipelink module"
	depends on MODEM_PIPE

config MODEM_PPP
	bool "Modem PPP module"
	depends on NET_L2_PPP
	select MODEM_PIPE
	select RING_BUFFER
	select CRC
	select PM_DEVICE_RUNTIME_ASYNC if PM_DEVICE_RUNTIME

if MODEM_PPP

config MODEM_PPP_NET_BUF_FRAG_SIZE
	int "Network buffer fragment size"
	default NET_BUF_DATA_SIZE if NET_BUF_FIXED_DATA_SIZE
	default 128

endif

config MODEM_STATS
	bool "Modem statistics"
	depends on SHELL
	help
	  Enables modem statistics shell commands which track the usage of
	  buffers across the modem modules. The statistics are useful for
	  scaling buffer sizes, as these are application specific.

config MODEM_STATS_BUFFER_NAME_SIZE
	int "Maximum string size of modem stats buffer name"
	default 32
	range 8 64

config MODEM_UBX
	bool "Modem U-BLOX module"
	select RING_BUFFER
	select MODEM_PIPE
	help
	  Enable Modem U-BLOX module.

if MODEM_UBX

config MODEM_UBX_LOG_BUFFER
	int "Modem U-BLOX log buffer size"
	default 128

endif

module = MODEM_MODULES
module-str = modem_modules
source "subsys/logging/Kconfig.template.log_config"

rsource "backends/Kconfig"

endif