1 /* 2 * ADXL345 3-Axis Digital Accelerometer I2C driver 3 * 4 * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com> 5 * 6 * This file is subject to the terms and conditions of version 2 of 7 * the GNU General Public License. See the file COPYING in the main 8 * directory of this archive for more details. 9 * 10 * 7-bit I2C slave address: 0x1D (ALT ADDRESS pin tied to VDDIO) or 11 * 0x53 (ALT ADDRESS pin grounded) 12 */ 13 14 #include <linux/i2c.h> 15 #include <linux/module.h> 16 #include <linux/regmap.h> 17 18 #include "adxl345.h" 19 20 static const struct regmap_config adxl345_i2c_regmap_config = { 21 .reg_bits = 8, 22 .val_bits = 8, 23 }; 24 25 static int adxl345_i2c_probe(struct i2c_client *client, 26 const struct i2c_device_id *id) 27 { 28 struct regmap *regmap; 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 ? id->name : NULL); 38 } 39 40 static int adxl345_i2c_remove(struct i2c_client *client) 41 { 42 return adxl345_core_remove(&client->dev); 43 } 44 45 static const struct i2c_device_id adxl345_i2c_id[] = { 46 { "adxl345", 0 }, 47 { } 48 }; 49 50 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id); 51 52 static const struct of_device_id adxl345_of_match[] = { 53 { .compatible = "adi,adxl345" }, 54 { }, 55 }; 56 57 MODULE_DEVICE_TABLE(of, adxl345_of_match); 58 59 static struct i2c_driver adxl345_i2c_driver = { 60 .driver = { 61 .name = "adxl345_i2c", 62 .of_match_table = adxl345_of_match, 63 }, 64 .probe = adxl345_i2c_probe, 65 .remove = adxl345_i2c_remove, 66 .id_table = adxl345_i2c_id, 67 }; 68 69 module_i2c_driver(adxl345_i2c_driver); 70 71 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>"); 72 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver"); 73 MODULE_LICENSE("GPL v2"); 74