drivers/staging/iio/cdc/ad7746.h

   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_ */