@brief Get the handle to the GPIO line at given offset. @param chip The GPIO chip object. @param offset The offset of the GPIO line. @return Pointer to the GPIO line handle or NULL if an error occured.
See Implementation
@brief Get the handle to the GPIO line at given offset. @param chip The GPIO chip object. @param offset The offset of the GPIO line. @return Pointer to the GPIO line handle or NULL if an error occured.