1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ADXL345 3-Axis Digital Accelerometer I2C driver 4 * 5 * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com> 6 * 7 * 7-bit I2C slave address: 0x1D (ALT ADDRESS pin tied to VDDIO) or 8 * 0x53 (ALT ADDRESS pin grounded) 9 */ 10 11 #include <linux/i2c.h> 12 #include <linux/module.h> 13 #include <linux/regmap.h> 14 15 #include "adxl345.h" 16 17 static const struct regmap_config adxl345_i2c_regmap_config = { 18 .reg_bits = 8, 19 .val_bits = 8, 20 }; 21 22 static int adxl345_i2c_probe(struct i2c_client *client, 23 const struct i2c_device_id *id) 24 { 25 struct regmap *regmap; 26 27 if (!id) 28 return -ENODEV; 29 30 regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config); 31 if (IS_ERR(regmap)) { 32 dev_err(&client->dev, "Error initializing i2c regmap: %ld\n", 33 PTR_ERR(regmap)); 34 return PTR_ERR(regmap); 35 } 36 37 return adxl345_core_probe(&client->dev, regmap, id->driver_data, 38 id->name); 39 } 40 41 static const struct i2c_device_id adxl345_i2c_id[] = { 42 { "adxl345", ADXL345 }, 43 { "adxl375", ADXL375 }, 44 { } 45 }; 46 47 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id); 48 49 static const struct of_device_id adxl345_of_match[] = { 50 { .compatible = "adi,adxl345" }, 51 { .compatible = "adi,adxl375" }, 52 { }, 53 }; 54 55 MODULE_DEVICE_TABLE(of, adxl345_of_match); 56 57 static struct i2c_driver adxl345_i2c_driver = { 58 .driver = { 59 .name = "adxl345_i2c", 60 .of_match_table = adxl345_of_match, 61 }, 62 .probe = adxl345_i2c_probe, 63 .id_table = adxl345_i2c_id, 64 }; 65 66 module_i2c_driver(adxl345_i2c_driver); 67 68 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>"); 69 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver"); 70 MODULE_LICENSE("GPL v2"); 71