drivers/iio/chemical/bme680_i2c.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * BME680 - I2C Driver
   4  *
   5  * Copyright (C) 2018 Himanshu Jha <himanshujha199640@gmail.com>
   6  *
   7  * 7-Bit I2C slave address is:
   8  *      - 0x76 if SDO is pulled to GND
   9  *      - 0x77 if SDO is pulled to VDDIO
  10  *
  11  * Note: SDO pin cannot be left floating otherwise I2C address
  12  *       will be undefined.
  13  */
  14 #include <linux/acpi.h>
  15 #include <linux/i2c.h>
  16 #include <linux/module.h>
  17 #include <linux/regmap.h>
  18
  19 #include "bme680.h"
  20
  21 static int bme680_i2c_probe(struct i2c_client *client,
  22                             const struct i2c_device_id *id)
  23 {
  24         struct regmap *regmap;
  25         const char *name = NULL;
  26
  27         regmap = devm_regmap_init_i2c(client, &bme680_regmap_config);
  28         if (IS_ERR(regmap)) {
  29                 dev_err(&client->dev, "Failed to register i2c regmap %d\n",
  30                                 (int)PTR_ERR(regmap));
  31                 return PTR_ERR(regmap);
  32         }
  33
  34         if (id)
  35                 name = id->name;
  36
  37         return bme680_core_probe(&client->dev, regmap, name);
  38 }
  39
  40 static const struct i2c_device_id bme680_i2c_id[] = {
  41         {"bme680", 0},
  42         {},
  43 };
  44 MODULE_DEVICE_TABLE(i2c, bme680_i2c_id);
  45
  46 static const struct acpi_device_id bme680_acpi_match[] = {
  47         {"BME0680", 0},
  48         {},
  49 };
  50 MODULE_DEVICE_TABLE(acpi, bme680_acpi_match);
  51
  52 static const struct of_device_id bme680_of_i2c_match[] = {
  53         { .compatible = "bosch,bme680", },
  54         {},
  55 };
  56 MODULE_DEVICE_TABLE(of, bme680_of_i2c_match);
  57
  58 static struct i2c_driver bme680_i2c_driver = {
  59         .driver = {
  60                 .name                   = "bme680_i2c",
  61                 .acpi_match_table       = ACPI_PTR(bme680_acpi_match),
  62                 .of_match_table         = bme680_of_i2c_match,
  63         },
  64         .probe = bme680_i2c_probe,
  65         .id_table = bme680_i2c_id,
  66 };
  67 module_i2c_driver(bme680_i2c_driver);
  68
  69 MODULE_AUTHOR("Himanshu Jha <himanshujha199640@gmail.com>");
  70 MODULE_DESCRIPTION("BME680 I2C driver");
  71 MODULE_LICENSE("GPL v2");