1 /* 2 * AD7746 capacitive sensor driver supporting AD7745, AD7746 and AD7747 3 * 4 * Copyright 2011 Analog Devices Inc. 5 * 6 * Licensed under the GPL-2. 7 */ 8 9 #ifndef IIO_CDC_AD7746_H_ 10 #define IIO_CDC_AD7746_H_ 11 12 /* 13 * TODO: struct ad7746_platform_data needs to go into include/linux/iio 14 */ 15 16 #define AD7466_EXCLVL_0 0 /* +-VDD/8 */ 17 #define AD7466_EXCLVL_1 1 /* +-VDD/4 */ 18 #define AD7466_EXCLVL_2 2 /* +-VDD * 3/8 */ 19 #define AD7466_EXCLVL_3 3 /* +-VDD/2 */ 20 21 struct ad7746_platform_data { 22 unsigned char exclvl; /*Excitation Voltage Level */ 23 bool exca_en; /* enables EXCA pin as the excitation output */ 24 bool exca_inv_en; /* enables /EXCA pin as the excitation output */ 25 bool excb_en; /* enables EXCB pin as the excitation output */ 26 bool excb_inv_en; /* enables /EXCB pin as the excitation output */ 27 }; 28 29 #endif /* IIO_CDC_AD7746_H_ */ 30