drivers/iio/accel/adxl345_i2c.c

   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, NULL);
  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);