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 if (!id) 31 return -ENODEV; 32 33 regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config); 34 if (IS_ERR(regmap)) { 35 dev_err(&client->dev, "Error initializing i2c regmap: %ld\n", 36 PTR_ERR(regmap)); 37 return PTR_ERR(regmap); 38 } 39 40 return adxl345_core_probe(&client->dev, regmap, id->driver_data, 41 id->name); 42 } 43 44 static int adxl345_i2c_remove(struct i2c_client *client) 45 { 46 return adxl345_core_remove(&client->dev); 47 } 48 49 static const struct i2c_device_id adxl345_i2c_id[] = { 50 { "adxl345", ADXL345 }, 51 { "adxl375", ADXL375 }, 52 { } 53 }; 54 55 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id); 56 57 static const struct of_device_id adxl345_of_match[] = { 58 { .compatible = "adi,adxl345" }, 59 { .compatible = "adi,adxl375" }, 60 { }, 61 }; 62 63 MODULE_DEVICE_TABLE(of, adxl345_of_match); 64 65 static struct i2c_driver adxl345_i2c_driver = { 66 .driver = { 67 .name = "adxl345_i2c", 68 .of_match_table = adxl345_of_match, 69 }, 70 .probe = adxl345_i2c_probe, 71 .remove = adxl345_i2c_remove, 72 .id_table = adxl345_i2c_id, 73 }; 74 75 module_i2c_driver(adxl345_i2c_driver); 76 77 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>"); 78 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver"); 79 MODULE_LICENSE("GPL v2"); 80