Edit File: ad7793.h
/* * AD7792/AD7793 SPI ADC driver * * Copyright 2011 Analog Devices Inc. * * Licensed under the GPL-2. */ #ifndef __LINUX_PLATFORM_DATA_AD7793_H__ #define __LINUX_PLATFORM_DATA_AD7793_H__ /** * enum ad7793_clock_source - AD7793 clock source selection * @AD7793_CLK_SRC_INT: Internal 64 kHz clock, not available at the CLK pin. * @AD7793_CLK_SRC_INT_CO: Internal 64 kHz clock, available at the CLK pin. * @AD7793_CLK_SRC_EXT: Use external clock. * @AD7793_CLK_SRC_EXT_DIV2: Use external clock divided by 2. */ enum ad7793_clock_source { AD7793_CLK_SRC_INT, AD7793_CLK_SRC_INT_CO, AD7793_CLK_SRC_EXT, AD7793_CLK_SRC_EXT_DIV2, }; /** * enum ad7793_bias_voltage - AD7793 bias voltage selection * @AD7793_BIAS_VOLTAGE_DISABLED: Bias voltage generator disabled * @AD7793_BIAS_VOLTAGE_AIN1: Bias voltage connected to AIN1(-). * @AD7793_BIAS_VOLTAGE_AIN2: Bias voltage connected to AIN2(-). * @AD7793_BIAS_VOLTAGE_AIN3: Bias voltage connected to AIN3(-). * Only valid for AD7795/AD7796. */ enum ad7793_bias_voltage { AD7793_BIAS_VOLTAGE_DISABLED, AD7793_BIAS_VOLTAGE_AIN1, AD7793_BIAS_VOLTAGE_AIN2, AD7793_BIAS_VOLTAGE_AIN3, }; /** * enum ad7793_refsel - AD7793 reference voltage selection * @AD7793_REFSEL_REFIN1: External reference applied between REFIN1(+) * and REFIN1(-). * @AD7793_REFSEL_REFIN2: External reference applied between REFIN2(+) and * and REFIN1(-). Only valid for AD7795/AD7796. * @AD7793_REFSEL_INTERNAL: Internal 1.17 V reference. */ enum ad7793_refsel { AD7793_REFSEL_REFIN1 = 0, AD7793_REFSEL_REFIN2 = 1, AD7793_REFSEL_INTERNAL = 2, }; /** * enum ad7793_current_source_direction - AD7793 excitation current direction * @AD7793_IEXEC1_IOUT1_IEXEC2_IOUT2: Current source IEXC1 connected to pin * IOUT1, current source IEXC2 connected to pin IOUT2. * @AD7793_IEXEC1_IOUT2_IEXEC2_IOUT1: Current source IEXC2 connected to pin * IOUT1, current source IEXC1 connected to pin IOUT2. * @AD7793_IEXEC1_IEXEC2_IOUT1: Both current sources connected to pin IOUT1. * Only valid when the current sources are set to 10 uA or 210 uA. * @AD7793_IEXEC1_IEXEC2_IOUT2: Both current sources connected to Pin IOUT2. * Only valid when the current ources are set to 10 uA or 210 uA. */ enum ad7793_current_source_direction { AD7793_IEXEC1_IOUT1_IEXEC2_IOUT2 = 0, AD7793_IEXEC1_IOUT2_IEXEC2_IOUT1 = 1, AD7793_IEXEC1_IEXEC2_IOUT1 = 2, AD7793_IEXEC1_IEXEC2_IOUT2 = 3, }; /** * enum ad7793_excitation_current - AD7793 excitation current selection * @AD7793_IX_DISABLED: Excitation current Disabled. * @AD7793_IX_10uA: Enable 10 micro-ampere excitation current. * @AD7793_IX_210uA: Enable 210 micro-ampere excitation current. * @AD7793_IX_1mA: Enable 1 milli-Ampere excitation current. */ enum ad7793_excitation_current { AD7793_IX_DISABLED = 0, AD7793_IX_10uA = 1, AD7793_IX_210uA = 2, AD7793_IX_1mA = 3, }; /** * struct ad7793_platform_data - AD7793 platform data * @clock_src: Clock source selection * @burnout_current: If set to true the 100nA burnout current is enabled. * @boost_enable: Enable boost for the bias voltage generator. * @buffered: If set to true configure the device for buffered input mode. * @unipolar: If set to true sample in unipolar mode, if set to false sample in * bipolar mode. * @refsel: Reference voltage selection * @bias_voltage: Bias voltage selection * @exitation_current: Excitation current selection * @current_source_direction: Excitation current direction selection */ struct ad7793_platform_data { enum ad7793_clock_source clock_src; bool burnout_current; bool boost_enable; bool buffered; bool unipolar; enum ad7793_refsel refsel; enum ad7793_bias_voltage bias_voltage; enum ad7793_excitation_current exitation_current; enum ad7793_current_source_direction current_source_direction; }; #endif /* IIO_ADC_AD7793_H_ */