CONFIG_BCM43XX_PIO (not configurable)

modulename: bcm43xx_pio.ko

configname: CONFIG_BCM43XX_PIO

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>BCM43XX_PIO
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
source code:
drivers/net//wireless/bcm43xx/bcm43xx_pio.c