a7014d01da
This PR adds a custom driver for the ADS1112 ADCs. Unlike ADS1113/4/5 family served by the ADS1x1x driver, the ADS1112 does not use an address pointer to address config registers. Instead, there is only one writable register and all i2c writes will set it. The registers resemble the ADS1119 device, but config bitmap is different, include a distinct data rate table, gain table, and input multiplexing table. There is also not a status register to be monitored with the ADS1112, as it uses config bit 7 for the same purpose instead of a separate register. The driver was tested on hardware using the ADC shell interface. Manual probing validated the voltages for the MUX_SINGLE configs at datarate 15 in CM_SINGLE. Higher gains were not tested and CM_CONTINUOUS is not supported in this initial implementation. The new driver has also been added to the existing ADC test using adc_emul for completeness. Origin: original License: Apache 2.0 Purpose: Adding support for ADS1112 ADCs Signed-off-by: Jordan Montgomery <jordan.montgomery@getcruise.com>
202 lines
4.3 KiB
Text
202 lines
4.3 KiB
Text
/*
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* Copyright (c) 2020, Linaro Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Application overlay for testing driver builds
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*
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* Names in this file should be chosen in a way that won't conflict
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* with real-world devicetree nodes, to allow these tests to run on
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* (and be extended to test) real hardware.
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*/
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/ {
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test {
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#address-cells = <1>;
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#size-cells = <1>;
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adc_emul {
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compatible = "zephyr,adc-emul";
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nchannels = <2>;
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ref-internal-mv = <3300>;
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ref-external1-mv = <5000>;
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#io-channel-cells = <1>;
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status = "okay";
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};
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test_gpio: gpio@deadbeef {
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compatible = "vnd,gpio";
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gpio-controller;
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reg = <0xdeadbeef 0x1000>;
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#gpio-cells = <0x2>;
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status = "okay";
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};
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test_i2c: i2c@11112222 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "vnd,i2c";
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reg = <0x11112222 0x1000>;
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status = "okay";
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clock-frequency = <100000>;
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test_i2c_ads1013: ads1013@0 {
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compatible = "ti,ads1013";
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reg = <0x0>;
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#io-channel-cells = <1>;
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};
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test_i2c_ads1014: ads1014@1 {
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compatible = "ti,ads1014";
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reg = <0x1>;
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#io-channel-cells = <1>;
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};
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test_i2c_ads1015: ads1015@2 {
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compatible = "ti,ads1015";
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reg = <0x2>;
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#io-channel-cells = <1>;
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};
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test_i2c_ads1113: ads1113@3 {
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compatible = "ti,ads1113";
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reg = <0x3>;
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#io-channel-cells = <1>;
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};
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test_i2c_ads1114: ads1114@4 {
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compatible = "ti,ads1114";
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reg = <0x4>;
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#io-channel-cells = <1>;
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};
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test_i2c_ads1115: ads1115@5 {
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compatible = "ti,ads1115";
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reg = <0x5>;
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#io-channel-cells = <1>;
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};
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test_i2c_ads1119: ads1119@6 {
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compatible = "ti,ads1119";
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reg = <0x6>;
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#io-channel-cells = <1>;
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};
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test_i2c_ads1112: ads1112@7 {
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compatible = "ti,ads1112";
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reg = <0x7>;
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#io-channel-cells = <1>;
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};
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};
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test_spi: spi@33334444 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "vnd,spi";
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reg = <0x33334444 0x1000>;
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status = "okay";
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clock-frequency = <2000000>;
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/* one entry for every devices at spi.dtsi */
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cs-gpios = <&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>,
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<&test_gpio 0 0>;
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test_spi_mcp3204: mcp3204@0 {
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compatible = "microchip,mcp3204";
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reg = <0>;
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spi-max-frequency = <0>;
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#io-channel-cells = <1>;
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};
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test_spi_lmp90077: lmp90077@1 {
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compatible = "ti,lmp90077";
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reg = <0x1>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_lmp90078: lmp90078@2 {
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compatible = "ti,lmp90078";
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reg = <0x2>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_lmp90079: lmp90079@3 {
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compatible = "ti,lmp90079";
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reg = <0x3>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_lmp90080: lmp90080@4 {
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compatible = "ti,lmp90080";
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reg = <0x4>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_lmp90097: lmp90097@5 {
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compatible = "ti,lmp90097";
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reg = <0x5>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_lmp90098: lmp90098@6 {
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compatible = "ti,lmp90098";
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reg = <0x6>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_lmp90099: lmp90099@7 {
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compatible = "ti,lmp90099";
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reg = <0x7>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_lmp90100: lmp90100@8 {
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compatible = "ti,lmp90100";
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reg = <0x8>;
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spi-max-frequency = <0>;
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drdyb-gpios = <&test_gpio 0 0>;
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#io-channel-cells = <2>;
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};
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test_spi_ads7052: ads7052@9 {
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compatible = "ti,ads7052";
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reg = <0x9>;
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spi-max-frequency = <12000000>;
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#io-channel-cells = <1>;
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};
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test_spi_ads114s08: ads114s08@9 {
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compatible = "ti,ads114s08";
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reg = <0x9>;
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spi-max-frequency = <0>;
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#io-channel-cells = <1>;
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reset-gpios = <&test_gpio 0 0>;
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drdy-gpios = <&test_gpio 0 0>;
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start-sync-gpios = <&test_gpio 0 0>;
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};
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};
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};
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};
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