71 lines · c
1// SPDX-License-Identifier: GPL-2.0+2/*3 * ADXL372 3-Axis Digital Accelerometer I2C driver4 *5 * Copyright 2018 Analog Devices Inc.6 */7 8#include <linux/i2c.h>9#include <linux/mod_devicetable.h>10#include <linux/module.h>11#include <linux/regmap.h>12 13#include "adxl372.h"14 15static const struct regmap_config adxl372_regmap_config = {16 .reg_bits = 8,17 .val_bits = 8,18 .readable_noinc_reg = adxl372_readable_noinc_reg,19};20 21static int adxl372_i2c_probe(struct i2c_client *client)22{23 const struct i2c_device_id *id = i2c_client_get_device_id(client);24 struct regmap *regmap;25 unsigned int regval;26 int ret;27 28 regmap = devm_regmap_init_i2c(client, &adxl372_regmap_config);29 if (IS_ERR(regmap))30 return PTR_ERR(regmap);31 32 ret = regmap_read(regmap, ADXL372_REVID, ®val);33 if (ret < 0)34 return ret;35 36 /* Starting with the 3rd revision an I2C chip bug was fixed */37 if (regval < 3)38 dev_warn(&client->dev,39 "I2C might not work properly with other devices on the bus");40 41 return adxl372_probe(&client->dev, regmap, client->irq, id->name);42}43 44static const struct i2c_device_id adxl372_i2c_id[] = {45 { "adxl372" },46 {}47};48MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id);49 50static const struct of_device_id adxl372_of_match[] = {51 { .compatible = "adi,adxl372" },52 { }53};54MODULE_DEVICE_TABLE(of, adxl372_of_match);55 56static struct i2c_driver adxl372_i2c_driver = {57 .driver = {58 .name = "adxl372_i2c",59 .of_match_table = adxl372_of_match,60 },61 .probe = adxl372_i2c_probe,62 .id_table = adxl372_i2c_id,63};64 65module_i2c_driver(adxl372_i2c_driver);66 67MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");68MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer I2C driver");69MODULE_LICENSE("GPL");70MODULE_IMPORT_NS(IIO_ADXL372);71