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 { 24 struct regmap *regmap; 25 26 regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config); 27 if (IS_ERR(regmap)) 28 return dev_err_probe(&client->dev, PTR_ERR(regmap), "Error initializing regmap\n"); 29 30 return adxl345_core_probe(&client->dev, regmap); 31 } 32 33 static const struct adxl345_chip_info adxl345_i2c_info = { 34 .name = "adxl345", 35 .uscale = ADXL345_USCALE, 36 }; 37 38 static const struct adxl345_chip_info adxl375_i2c_info = { 39 .name = "adxl375", 40 .uscale = ADXL375_USCALE, 41 }; 42 43 static const struct i2c_device_id adxl345_i2c_id[] = { 44 { "adxl345", (kernel_ulong_t)&adxl345_i2c_info }, 45 { "adxl375", (kernel_ulong_t)&adxl375_i2c_info }, 46 { } 47 }; 48 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id); 49 50 static const struct of_device_id adxl345_of_match[] = { 51 { .compatible = "adi,adxl345", .data = &adxl345_i2c_info }, 52 { .compatible = "adi,adxl375", .data = &adxl375_i2c_info }, 53 { } 54 }; 55 MODULE_DEVICE_TABLE(of, adxl345_of_match); 56 57 static const struct acpi_device_id adxl345_acpi_match[] = { 58 { "ADS0345", (kernel_ulong_t)&adxl345_i2c_info }, 59 { } 60 }; 61 MODULE_DEVICE_TABLE(acpi, adxl345_acpi_match); 62 63 static struct i2c_driver adxl345_i2c_driver = { 64 .driver = { 65 .name = "adxl345_i2c", 66 .of_match_table = adxl345_of_match, 67 .acpi_match_table = adxl345_acpi_match, 68 }, 69 .probe = adxl345_i2c_probe, 70 .id_table = adxl345_i2c_id, 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 MODULE_IMPORT_NS(IIO_ADXL345); 78