Parallel port adapter for AVR Butterfly (DEVELOPMENT)

modulename: spi-butterfly.ko

configname: CONFIG_SPI_BUTTERFLY

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>Parallel port support
└─>Parallel port adapter for AVR Butterfly (DEVELOPMENT)
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This uses a custom parallel port cable to connect to an AVR
Butterfly <http://www.atmel.com/products/avr/butterfly>, an
inexpensive battery powered microcontroller evaluation board.
This same cable can be used to flash new firmware.

source code:
drivers/spi/spi-butterfly.c