// SPDX-License-Identifier: GPL-2.0+ /* * ADXL372 3-Axis Digital Accelerometer I2C driver * * Copyright 2018 Analog Devices Inc. */ #include <linux/i2c.h> #include <linux/module.h> #include <linux/regmap.h> #include "adxl372.h" static const struct regmap_config adxl372_regmap_config = { .reg_bits = 8, .val_bits = 8, .readable_noinc_reg = adxl372_readable_noinc_reg, }; static int adxl372_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct regmap *regmap; unsigned int regval; int ret; regmap = devm_regmap_init_i2c(client, &adxl372_regmap_config); if (IS_ERR(regmap)) return PTR_ERR(regmap); ret = regmap_read(regmap, ADXL372_REVID, ®val); if (ret < 0) return ret; /* Starting with the 3rd revision an I2C chip bug was fixed */ if (regval < 3) dev_warn(&client->dev, "I2C might not work properly with other devices on the bus"); return adxl372_probe(&client->dev, regmap, client->irq, id->name); } static const struct i2c_device_id adxl372_i2c_id[] = { { "adxl372", 0 }, {} }; MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id); static struct i2c_driver adxl372_i2c_driver = { .driver = { .name = "adxl372_i2c", }, .probe = adxl372_i2c_probe, .id_table = adxl372_i2c_id, }; module_i2c_driver(adxl372_i2c_driver); MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>"); MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer I2C driver"); MODULE_LICENSE("GPL");