linux_old1/drivers/net/can/Kconfig

menu "CAN Device Drivers"
	depends on CAN

config CAN_VCAN
	tristate "Virtual Local CAN Interface (vcan)"
	depends on CAN
	default N
	---help---
	  Similar to the network loopback devices, vcan offers a
	  virtual local CAN interface.

	  This driver can also be built as a module.  If so, the module
	  will be called vcan.

config CAN_DEV
	tristate "Platform CAN drivers with Netlink support"
	depends on CAN
	default Y
	---help---
	  Enables the common framework for platform CAN drivers with Netlink
	  support. This is the standard library for CAN drivers.
	  If unsure, say Y.

config CAN_CALC_BITTIMING
	bool "CAN bit-timing calculation"
	depends on CAN_DEV
	default Y
	---help---
	  If enabled, CAN bit-timing parameters will be calculated for the
	  bit-rate specified via Netlink argument "bitrate" when the device
	  get started. This works fine for the most common CAN controllers
	  with standard bit-rates but may fail for exotic bit-rates or CAN
	  source clock frequencies. Disabling saves some space, but then the
	  bit-timing parameters must be specified directly using the Netlink
	  arguments "tq", "prop_seg", "phase_seg1", "phase_seg2" and "sjw".
	  If unsure, say Y.

config CAN_DEBUG_DEVICES
	bool "CAN devices debugging messages"
	depends on CAN
	default N
	---help---
	  Say Y here if you want the CAN device drivers to produce a bunch of
	  debug messages to the system log.  Select this if you are having
	  a problem with CAN support and want to see more of what is going
	  on.

endmenu