Avionic Design N-bit GPIO expander
modulename: gpio-adnp.ko
configname: CONFIG_GPIO_ADNP
Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>I2C support
└─>Avionic Design N-bit GPIO expander
In linux kernel since version 3.1 (release Date: 2011-10-24)
This option enables support for N GPIOs found on Avionic Design
I2C GPIO expanders. The register space will be extended by powers
of two, so the controller will need to accomodate for that. For
example: if a controller provides 48 pins, 6 registers will be
enough to represent all pins, but the driver will assume a
register layout for 64 pins (8 registers).
I2C GPIO expanders. The register space will be extended by powers
of two, so the controller will need to accomodate for that. For
example: if a controller provides 48 pins, 6 registers will be
enough to represent all pins, but the driver will assume a
register layout for 64 pins (8 registers).