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1// SPDX-License-Identifier: GPL-2.02/*3 * AD7091R5 Analog to Digital converter driver4 *5 * Copyright 2014-2019 Analog Devices Inc.6 */7 8#include <linux/i2c.h>9#include <linux/iio/iio.h>10#include <linux/module.h>11#include <linux/regmap.h>12 13#include "ad7091r-base.h"14 15static const struct iio_chan_spec ad7091r5_channels_irq[] = {16 AD7091R_CHANNEL(0, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),17 AD7091R_CHANNEL(1, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),18 AD7091R_CHANNEL(2, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),19 AD7091R_CHANNEL(3, 12, ad7091r_events, ARRAY_SIZE(ad7091r_events)),20};21 22static const struct iio_chan_spec ad7091r5_channels_noirq[] = {23 AD7091R_CHANNEL(0, 12, NULL, 0),24 AD7091R_CHANNEL(1, 12, NULL, 0),25 AD7091R_CHANNEL(2, 12, NULL, 0),26 AD7091R_CHANNEL(3, 12, NULL, 0),27};28 29static int ad7091r5_set_mode(struct ad7091r_state *st, enum ad7091r_mode mode)30{31 int ret, conf;32 33 switch (mode) {34 case AD7091R_MODE_SAMPLE:35 conf = 0;36 break;37 case AD7091R_MODE_COMMAND:38 conf = AD7091R_REG_CONF_CMD;39 break;40 case AD7091R_MODE_AUTOCYCLE:41 conf = AD7091R_REG_CONF_AUTO;42 break;43 default:44 return -EINVAL;45 }46 47 ret = regmap_update_bits(st->map, AD7091R_REG_CONF,48 AD7091R_REG_CONF_MODE_MASK, conf);49 if (ret)50 return ret;51 52 st->mode = mode;53 54 return 0;55}56 57static unsigned int ad7091r5_reg_result_chan_id(unsigned int val)58{59 return AD7091R5_REG_RESULT_CH_ID(val);60}61 62static const struct ad7091r_chip_info ad7091r5_chip_info_irq = {63 .name = "ad7091r-5",64 .channels = ad7091r5_channels_irq,65 .num_channels = ARRAY_SIZE(ad7091r5_channels_irq),66 .vref_mV = 2500,67 .reg_result_chan_id = &ad7091r5_reg_result_chan_id,68 .set_mode = &ad7091r5_set_mode,69};70 71static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = {72 .name = "ad7091r-5",73 .channels = ad7091r5_channels_noirq,74 .num_channels = ARRAY_SIZE(ad7091r5_channels_noirq),75 .vref_mV = 2500,76 .reg_result_chan_id = &ad7091r5_reg_result_chan_id,77 .set_mode = &ad7091r5_set_mode,78};79 80static const struct regmap_config ad7091r_regmap_config = {81 .reg_bits = 8,82 .val_bits = 16,83 .writeable_reg = ad7091r_writeable_reg,84 .volatile_reg = ad7091r_volatile_reg,85};86 87static void ad7091r5_regmap_init(struct ad7091r_state *st,88 const struct regmap_config *regmap_conf)89{90 struct i2c_client *i2c = container_of(st->dev, struct i2c_client, dev);91 92 st->map = devm_regmap_init_i2c(i2c, regmap_conf);93}94 95static struct ad7091r_init_info ad7091r5_init_info = {96 .info_irq = &ad7091r5_chip_info_irq,97 .info_no_irq = &ad7091r5_chip_info_noirq,98 .regmap_config = &ad7091r_regmap_config,99 .init_adc_regmap = &ad7091r5_regmap_init100};101 102static int ad7091r5_i2c_probe(struct i2c_client *i2c)103{104 const struct ad7091r_init_info *init_info;105 106 init_info = i2c_get_match_data(i2c);107 if (!init_info)108 return -EINVAL;109 110 return ad7091r_probe(&i2c->dev, init_info, i2c->irq);111}112 113static const struct of_device_id ad7091r5_dt_ids[] = {114 { .compatible = "adi,ad7091r5", .data = &ad7091r5_init_info },115 { }116};117MODULE_DEVICE_TABLE(of, ad7091r5_dt_ids);118 119static const struct i2c_device_id ad7091r5_i2c_ids[] = {120 { "ad7091r5", (kernel_ulong_t)&ad7091r5_init_info },121 { }122};123MODULE_DEVICE_TABLE(i2c, ad7091r5_i2c_ids);124 125static struct i2c_driver ad7091r5_driver = {126 .driver = {127 .name = "ad7091r5",128 .of_match_table = ad7091r5_dt_ids,129 },130 .probe = ad7091r5_i2c_probe,131 .id_table = ad7091r5_i2c_ids,132};133module_i2c_driver(ad7091r5_driver);134 135MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>");136MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver");137MODULE_LICENSE("GPL v2");138MODULE_IMPORT_NS(IIO_AD7091R);139