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/i2c.h>
  15 #include <linux/module.h>
  16 #include <linux/regmap.h>
  17
  18 #include "bme680.h"
  19
  20 static int bme680_i2c_probe(struct i2c_client *client)
  21 {
  22         const struct i2c_device_id *id = i2c_client_get_device_id(client);
  23         struct regmap *regmap;
  24         const char *name = NULL;
  25
  26         regmap = devm_regmap_init_i2c(client, &bme680_regmap_config);
  27         if (IS_ERR(regmap)) {
  28                 dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
  29                 return PTR_ERR(regmap);
  30         }
  31
  32         if (id)
  33                 name = id->name;
  34
  35         return bme680_core_probe(&client->dev, regmap, name);
  36 }
  37
  38 static const struct i2c_device_id bme680_i2c_id[] = {
  39         { "bme680" },
  40         {}
  41 };
  42 MODULE_DEVICE_TABLE(i2c, bme680_i2c_id);
  43
  44 static const struct of_device_id bme680_of_i2c_match[] = {
  45         { .compatible = "bosch,bme680", },
  46         {},
  47 };
  48 MODULE_DEVICE_TABLE(of, bme680_of_i2c_match);
  49
  50 static struct i2c_driver bme680_i2c_driver = {
  51         .driver = {
  52                 .name                   = "bme680_i2c",
  53                 .of_match_table         = bme680_of_i2c_match,
  54         },
  55         .probe = bme680_i2c_probe,
  56         .id_table = bme680_i2c_id,
  57 };
  58 module_i2c_driver(bme680_i2c_driver);
  59
  60 MODULE_AUTHOR("Himanshu Jha <himanshujha199640@gmail.com>");
  61 MODULE_DESCRIPTION("BME680 I2C driver");
  62 MODULE_LICENSE("GPL v2");
  63 MODULE_IMPORT_NS(IIO_BME680);