1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * AD7792/AD7793 SPI ADC driver 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright 2011 Analog Devices Inc. 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun #ifndef __LINUX_PLATFORM_DATA_AD7793_H__ 8*4882a593Smuzhiyun #define __LINUX_PLATFORM_DATA_AD7793_H__ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun /** 11*4882a593Smuzhiyun * enum ad7793_clock_source - AD7793 clock source selection 12*4882a593Smuzhiyun * @AD7793_CLK_SRC_INT: Internal 64 kHz clock, not available at the CLK pin. 13*4882a593Smuzhiyun * @AD7793_CLK_SRC_INT_CO: Internal 64 kHz clock, available at the CLK pin. 14*4882a593Smuzhiyun * @AD7793_CLK_SRC_EXT: Use external clock. 15*4882a593Smuzhiyun * @AD7793_CLK_SRC_EXT_DIV2: Use external clock divided by 2. 16*4882a593Smuzhiyun */ 17*4882a593Smuzhiyun enum ad7793_clock_source { 18*4882a593Smuzhiyun AD7793_CLK_SRC_INT, 19*4882a593Smuzhiyun AD7793_CLK_SRC_INT_CO, 20*4882a593Smuzhiyun AD7793_CLK_SRC_EXT, 21*4882a593Smuzhiyun AD7793_CLK_SRC_EXT_DIV2, 22*4882a593Smuzhiyun }; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /** 25*4882a593Smuzhiyun * enum ad7793_bias_voltage - AD7793 bias voltage selection 26*4882a593Smuzhiyun * @AD7793_BIAS_VOLTAGE_DISABLED: Bias voltage generator disabled 27*4882a593Smuzhiyun * @AD7793_BIAS_VOLTAGE_AIN1: Bias voltage connected to AIN1(-). 28*4882a593Smuzhiyun * @AD7793_BIAS_VOLTAGE_AIN2: Bias voltage connected to AIN2(-). 29*4882a593Smuzhiyun * @AD7793_BIAS_VOLTAGE_AIN3: Bias voltage connected to AIN3(-). 30*4882a593Smuzhiyun * Only valid for AD7795/AD7796. 31*4882a593Smuzhiyun */ 32*4882a593Smuzhiyun enum ad7793_bias_voltage { 33*4882a593Smuzhiyun AD7793_BIAS_VOLTAGE_DISABLED, 34*4882a593Smuzhiyun AD7793_BIAS_VOLTAGE_AIN1, 35*4882a593Smuzhiyun AD7793_BIAS_VOLTAGE_AIN2, 36*4882a593Smuzhiyun AD7793_BIAS_VOLTAGE_AIN3, 37*4882a593Smuzhiyun }; 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun /** 40*4882a593Smuzhiyun * enum ad7793_refsel - AD7793 reference voltage selection 41*4882a593Smuzhiyun * @AD7793_REFSEL_REFIN1: External reference applied between REFIN1(+) 42*4882a593Smuzhiyun * and REFIN1(-). 43*4882a593Smuzhiyun * @AD7793_REFSEL_REFIN2: External reference applied between REFIN2(+) 44*4882a593Smuzhiyun * and REFIN1(-). Only valid for AD7795/AD7796. 45*4882a593Smuzhiyun * @AD7793_REFSEL_INTERNAL: Internal 1.17 V reference. 46*4882a593Smuzhiyun */ 47*4882a593Smuzhiyun enum ad7793_refsel { 48*4882a593Smuzhiyun AD7793_REFSEL_REFIN1 = 0, 49*4882a593Smuzhiyun AD7793_REFSEL_REFIN2 = 1, 50*4882a593Smuzhiyun AD7793_REFSEL_INTERNAL = 2, 51*4882a593Smuzhiyun }; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun /** 54*4882a593Smuzhiyun * enum ad7793_current_source_direction - AD7793 excitation current direction 55*4882a593Smuzhiyun * @AD7793_IEXEC1_IOUT1_IEXEC2_IOUT2: Current source IEXC1 connected to pin 56*4882a593Smuzhiyun * IOUT1, current source IEXC2 connected to pin IOUT2. 57*4882a593Smuzhiyun * @AD7793_IEXEC1_IOUT2_IEXEC2_IOUT1: Current source IEXC2 connected to pin 58*4882a593Smuzhiyun * IOUT1, current source IEXC1 connected to pin IOUT2. 59*4882a593Smuzhiyun * @AD7793_IEXEC1_IEXEC2_IOUT1: Both current sources connected to pin IOUT1. 60*4882a593Smuzhiyun * Only valid when the current sources are set to 10 uA or 210 uA. 61*4882a593Smuzhiyun * @AD7793_IEXEC1_IEXEC2_IOUT2: Both current sources connected to Pin IOUT2. 62*4882a593Smuzhiyun * Only valid when the current ources are set to 10 uA or 210 uA. 63*4882a593Smuzhiyun */ 64*4882a593Smuzhiyun enum ad7793_current_source_direction { 65*4882a593Smuzhiyun AD7793_IEXEC1_IOUT1_IEXEC2_IOUT2 = 0, 66*4882a593Smuzhiyun AD7793_IEXEC1_IOUT2_IEXEC2_IOUT1 = 1, 67*4882a593Smuzhiyun AD7793_IEXEC1_IEXEC2_IOUT1 = 2, 68*4882a593Smuzhiyun AD7793_IEXEC1_IEXEC2_IOUT2 = 3, 69*4882a593Smuzhiyun }; 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun /** 72*4882a593Smuzhiyun * enum ad7793_excitation_current - AD7793 excitation current selection 73*4882a593Smuzhiyun * @AD7793_IX_DISABLED: Excitation current Disabled. 74*4882a593Smuzhiyun * @AD7793_IX_10uA: Enable 10 micro-ampere excitation current. 75*4882a593Smuzhiyun * @AD7793_IX_210uA: Enable 210 micro-ampere excitation current. 76*4882a593Smuzhiyun * @AD7793_IX_1mA: Enable 1 milli-Ampere excitation current. 77*4882a593Smuzhiyun */ 78*4882a593Smuzhiyun enum ad7793_excitation_current { 79*4882a593Smuzhiyun AD7793_IX_DISABLED = 0, 80*4882a593Smuzhiyun AD7793_IX_10uA = 1, 81*4882a593Smuzhiyun AD7793_IX_210uA = 2, 82*4882a593Smuzhiyun AD7793_IX_1mA = 3, 83*4882a593Smuzhiyun }; 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun /** 86*4882a593Smuzhiyun * struct ad7793_platform_data - AD7793 platform data 87*4882a593Smuzhiyun * @clock_src: Clock source selection 88*4882a593Smuzhiyun * @burnout_current: If set to true the 100nA burnout current is enabled. 89*4882a593Smuzhiyun * @boost_enable: Enable boost for the bias voltage generator. 90*4882a593Smuzhiyun * @buffered: If set to true configure the device for buffered input mode. 91*4882a593Smuzhiyun * @unipolar: If set to true sample in unipolar mode, if set to false sample in 92*4882a593Smuzhiyun * bipolar mode. 93*4882a593Smuzhiyun * @refsel: Reference voltage selection 94*4882a593Smuzhiyun * @bias_voltage: Bias voltage selection 95*4882a593Smuzhiyun * @exitation_current: Excitation current selection 96*4882a593Smuzhiyun * @current_source_direction: Excitation current direction selection 97*4882a593Smuzhiyun */ 98*4882a593Smuzhiyun struct ad7793_platform_data { 99*4882a593Smuzhiyun enum ad7793_clock_source clock_src; 100*4882a593Smuzhiyun bool burnout_current; 101*4882a593Smuzhiyun bool boost_enable; 102*4882a593Smuzhiyun bool buffered; 103*4882a593Smuzhiyun bool unipolar; 104*4882a593Smuzhiyun 105*4882a593Smuzhiyun enum ad7793_refsel refsel; 106*4882a593Smuzhiyun enum ad7793_bias_voltage bias_voltage; 107*4882a593Smuzhiyun enum ad7793_excitation_current exitation_current; 108*4882a593Smuzhiyun enum ad7793_current_source_direction current_source_direction; 109*4882a593Smuzhiyun }; 110*4882a593Smuzhiyun 111*4882a593Smuzhiyun #endif /* IIO_ADC_AD7793_H_ */ 112