drivers/bluetooth/Config.help

HCI UART driver
CONFIG_BLUEZ_HCIUART
  Bluetooth HCI UART driver.
  This driver is required if you want to use Bluetooth devices with
  serial port interface. You will also need this driver if you have 
  UART based Bluetooth PCMCIA and CF devices like Xircom Credit Card 
  adapter and BrainBoxes Bluetooth PC Card.

  Say Y here to compile support for Bluetooth UART devices into the
  kernel or say M to compile it as module (hci_uart.o).

HCI UART (H4) protocol support 
CONFIG_BLUEZ_HCIUART_H4
  UART (H4) is serial protocol for communication between Bluetooth 
  device and host. This protocol is required for most UART based 
  Bluetooth device (including PCMCIA and CF). 

  Say Y here to compile support for HCI UART (H4) protocol.

HCI USB driver
CONFIG_BLUEZ_HCIUSB
  Bluetooth HCI USB driver.
  This driver is required if you want to use Bluetooth devices with
  USB interface.

  Say Y here to compile support for Bluetooth USB devices into the
  kernel or say M to compile it as module (hci_usb.o).

HCI USB firmware download support
CONFIG_BLUEZ_USB_FW_LOAD
  Firmware download support for Bluetooth USB devices.
  This support is required for devices like Broadcom BCM2033.

  HCI USB driver uses external firmware downloader program provided 
  in BlueFW package.
  For more information, see <http://bluez.sf.net/>.

HCI USB zero packet support
CONFIG_BLUEZ_USB_ZERO_PACKET
  Support for USB zero packets. 
  This option is provided only as a work around for buggy Bluetooth USB 
  devices. Do _not_ enable it unless you know for sure that your device 
  requires zero packets.
  Most people should say N here.

HCI VHCI Virtual HCI device driver
CONFIG_BLUEZ_HCIVHCI
  Bluetooth Virtual HCI device driver.
  This driver is required if you want to use HCI Emulation software.

  Say Y here to compile support for virtual HCI devices into the
  kernel or say M to compile it as module (hci_vhci.o).

HCI DTL1 (PC Card) device driver
CONFIG_BLUEZ_HCIDTL1
  Bluetooth HCI DTL1 (PC Card) driver.
  This driver provides support for Bluetooth PCMCIA devices with
  Nokia DTL1 interface:
     Nokia Bluetooth Card
     Socket Bluetooth CF Card

  Say Y here to compile support for HCI DTL1 devices into the
  kernel or say M to compile it as module (dtl1_cs.o).

HCI BlueCard (PC Card) device driver
CONFIG_BLUEZ_HCIBLUECARD
  Bluetooth HCI BlueCard (PC Card) driver.
  This driver provides support for Bluetooth PCMCIA devices with
  Anycom BlueCard interface:
     Anycom Bluetooth PC Card
     Anycom Bluetooth CF Card

  Say Y here to compile support for HCI BlueCard devices into the
  kernel or say M to compile it as module (bluecard_cs.o).