kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_AD2S1210_GPIO_OUTPUT.
Result is shown for kernelversion 3.0.99

set gpio pins to set resolution

configname: CONFIG_AD2S1210_GPIO_OUTPUT

Resolution Control
└─> set gpio pins to set resolution

RES0 and RES1 pins are controlled by GPIOs, setting GPIO pins to
set the resolution.