1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * AD7746 capacitive sensor driver supporting AD7745, AD7746 and AD7747
4 *
5 * Copyright 2011 Analog Devices Inc.
6 */
7
8 #ifndef IIO_CDC_AD7746_H_
9 #define IIO_CDC_AD7746_H_
10
11 /*
12 * TODO: struct ad7746_platform_data needs to go into include/linux/iio
13 */
14
15 #define AD7466_EXCLVL_0 0 /* +-VDD/8 */
16 #define AD7466_EXCLVL_1 1 /* +-VDD/4 */
17 #define AD7466_EXCLVL_2 2 /* +-VDD * 3/8 */
18 #define AD7466_EXCLVL_3 3 /* +-VDD/2 */
19
20 struct ad7746_platform_data {
21 unsigned char exclvl; /*Excitation Voltage Level */
22 bool exca_en; /* enables EXCA pin as the excitation output */
23 bool exca_inv_en; /* enables /EXCA pin as the excitation output */
24 bool excb_en; /* enables EXCB pin as the excitation output */
25 bool excb_inv_en; /* enables /EXCB pin as the excitation output */
26 };
27
28 #endif /* IIO_CDC_AD7746_H_ */