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 int adxl345_i2c_remove(struct i2c_client *client) 42 { 43 return adxl345_core_remove(&client->dev); 44 } 45 46 static const struct i2c_device_id adxl345_i2c_id[] = { 47 { "adxl345", ADXL345 }, 48 { "adxl375", ADXL375 }, 49 { } 50 }; 51 52 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id); 53 54 static const struct of_device_id adxl345_of_match[] = { 55 { .compatible = "adi,adxl345" }, 56 { .compatible = "adi,adxl375" }, 57 { }, 58 }; 59 60 MODULE_DEVICE_TABLE(of, adxl345_of_match); 61 62 static struct i2c_driver adxl345_i2c_driver = { 63 .driver = { 64 .name = "adxl345_i2c", 65 .of_match_table = adxl345_of_match, 66 }, 67 .probe = adxl345_i2c_probe, 68 .remove = adxl345_i2c_remove, 69 .id_table = adxl345_i2c_id, 70 }; 71 72 module_i2c_driver(adxl345_i2c_driver); 73 74 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>"); 75 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver"); 76 MODULE_LICENSE("GPL v2"); 77