drivers/iio/imu/bmi160/bmi160_i2c.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * BMI160 - Bosch IMU, I2C bits
   4  *
   5  * Copyright (c) 2016, Intel Corporation.
   6  *
   7  * 7-bit I2C slave address is:
   8  *      - 0x68 if SDO is pulled to GND
   9  *      - 0x69 if SDO is pulled to VDDIO
  10  */
  11 #include <linux/i2c.h>
  12 #include <linux/mod_devicetable.h>
  13 #include <linux/module.h>
  14 #include <linux/regmap.h>
  15
  16 #include "bmi160.h"
  17
  18 static int bmi160_i2c_probe(struct i2c_client *client)
  19 {
  20         const struct i2c_device_id *id = i2c_client_get_device_id(client);
  21         struct regmap *regmap;
  22         const char *name;
  23
  24         regmap = devm_regmap_init_i2c(client, &bmi160_regmap_config);
  25         if (IS_ERR(regmap)) {
  26                 dev_err(&client->dev, "Failed to register i2c regmap: %pe\n",
  27                         regmap);
  28                 return PTR_ERR(regmap);
  29         }
  30
  31         if (id)
  32                 name = id->name;
  33         else
  34                 name = dev_name(&client->dev);
  35
  36         return bmi160_core_probe(&client->dev, regmap, name, false);
  37 }
  38
  39 static const struct i2c_device_id bmi160_i2c_id[] = {
  40         { "bmi120" },
  41         { "bmi160" },
  42         {}
  43 };
  44 MODULE_DEVICE_TABLE(i2c, bmi160_i2c_id);
  45
  46 static const struct acpi_device_id bmi160_acpi_match[] = {
  47         /*
  48          * FIRMWARE BUG WORKAROUND
  49          * Some manufacturers like GPD, Lenovo or Aya used the incorrect
  50          * ID "10EC5280" for bmi160 in their DSDT. A fixed firmware is not
  51          * available as of Feb 2024 after trying to work with OEMs, and
  52          * this is not expected to change anymore since at least some of
  53          * the affected devices are from 2021/2022.
  54          */
  55         {"10EC5280", 0},
  56         {"BMI0120", 0},
  57         {"BMI0160", 0},
  58         { },
  59 };
  60 MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);
  61
  62 static const struct of_device_id bmi160_of_match[] = {
  63         { .compatible = "bosch,bmi120" },
  64         { .compatible = "bosch,bmi160" },
  65         { },
  66 };
  67 MODULE_DEVICE_TABLE(of, bmi160_of_match);
  68
  69 static struct i2c_driver bmi160_i2c_driver = {
  70         .driver = {
  71                 .name                   = "bmi160_i2c",
  72                 .acpi_match_table       = bmi160_acpi_match,
  73                 .of_match_table         = bmi160_of_match,
  74         },
  75         .probe          = bmi160_i2c_probe,
  76         .id_table       = bmi160_i2c_id,
  77 };
  78 module_i2c_driver(bmi160_i2c_driver);
  79
  80 MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
  81 MODULE_DESCRIPTION("BMI160 I2C driver");
  82 MODULE_LICENSE("GPL v2");
  83 MODULE_IMPORT_NS("IIO_BMI160");