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 .volatile_reg = adxl345_is_volatile_reg, 21 .cache_type = REGCACHE_MAPLE, 22 }; 23 24 static int adxl345_i2c_probe(struct i2c_client *client) 25 { 26 struct regmap *regmap; 27 28 regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config); 29 if (IS_ERR(regmap)) 30 return dev_err_probe(&client->dev, PTR_ERR(regmap), "Error initializing regmap\n"); 31 32 return adxl345_core_probe(&client->dev, regmap, false, NULL); 33 } 34 35 static const struct adxl345_chip_info adxl345_i2c_info = { 36 .name = "adxl345", 37 .uscale = ADXL345_USCALE, 38 }; 39 40 static const struct adxl345_chip_info adxl375_i2c_info = { 41 .name = "adxl375", 42 .uscale = ADXL375_USCALE, 43 }; 44 45 static const struct i2c_device_id adxl345_i2c_id[] = { 46 { "adxl345", (kernel_ulong_t)&adxl345_i2c_info }, 47 { "adxl375", (kernel_ulong_t)&adxl375_i2c_info }, 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", .data = &adxl345_i2c_info }, 54 { .compatible = "adi,adxl375", .data = &adxl375_i2c_info }, 55 { } 56 }; 57 MODULE_DEVICE_TABLE(of, adxl345_of_match); 58 59 static const struct acpi_device_id adxl345_acpi_match[] = { 60 { "ADS0345", (kernel_ulong_t)&adxl345_i2c_info }, 61 { } 62 }; 63 MODULE_DEVICE_TABLE(acpi, adxl345_acpi_match); 64 65 static struct i2c_driver adxl345_i2c_driver = { 66 .driver = { 67 .name = "adxl345_i2c", 68 .of_match_table = adxl345_of_match, 69 .acpi_match_table = adxl345_acpi_match, 70 }, 71 .probe = adxl345_i2c_probe, 72 .id_table = adxl345_i2c_id, 73 }; 74 module_i2c_driver(adxl345_i2c_driver); 75 76 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>"); 77 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver"); 78 MODULE_LICENSE("GPL v2"); 79 MODULE_IMPORT_NS("IIO_ADXL345"); 80