Kernel module for the National Semiconductor\\ ADC<bb><c>S<sss> chip family, where\\ * bb is the resolution in number of bits (8, 10, 12)\\ * c is the number of channels (1, 2, 4, 8)\\ * sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500\\ kSPS and 101 for 1 MSPS)\\ \\ Examples : ADC081S101, ADC124S501, ...\\ \\