drivers/iio/magnetometer/bmc150_magn_i2c.c

   1 /*
   2  * 3-axis magnetometer driver supporting following I2C Bosch-Sensortec chips:
   3  *  - BMC150
   4  *  - BMC156
   5  *  - BMM150
   6  *
   7  * Copyright (c) 2016, Intel Corporation.
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms and conditions of the GNU General Public License,
  11  * version 2, as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  */
  18 #include <linux/device.h>
  19 #include <linux/mod_devicetable.h>
  20 #include <linux/i2c.h>
  21 #include <linux/module.h>
  22 #include <linux/acpi.h>
  23 #include <linux/regmap.h>
  24
  25 #include "bmc150_magn.h"
  26
  27 static int bmc150_magn_i2c_probe(struct i2c_client *client,
  28                                  const struct i2c_device_id *id)
  29 {
  30         struct regmap *regmap;
  31         const char *name = NULL;
  32
  33         regmap = devm_regmap_init_i2c(client, &bmc150_magn_regmap_config);
  34         if (IS_ERR(regmap)) {
  35                 dev_err(&client->dev, "Failed to initialize i2c regmap\n");
  36                 return PTR_ERR(regmap);
  37         }
  38
  39         if (id)
  40                 name = id->name;
  41
  42         return bmc150_magn_probe(&client->dev, regmap, client->irq, name);
  43 }
  44
  45 static int bmc150_magn_i2c_remove(struct i2c_client *client)
  46 {
  47         return bmc150_magn_remove(&client->dev);
  48 }
  49
  50 static const struct acpi_device_id bmc150_magn_acpi_match[] = {
  51         {"BMC150B", 0},
  52         {"BMC156B", 0},
  53         {"BMM150B", 0},
  54         {},
  55 };
  56 MODULE_DEVICE_TABLE(acpi, bmc150_magn_acpi_match);
  57
  58 static const struct i2c_device_id bmc150_magn_i2c_id[] = {
  59         {"bmc150_magn", 0},
  60         {"bmc156_magn", 0},
  61         {"bmm150_magn", 0},
  62         {}
  63 };
  64 MODULE_DEVICE_TABLE(i2c, bmc150_magn_i2c_id);
  65
  66 static const struct of_device_id bmc150_magn_of_match[] = {
  67         { .compatible = "bosch,bmc150_magn" },
  68         { .compatible = "bosch,bmc156_magn" },
  69         { .compatible = "bosch,bmm150_magn" },
  70         { }
  71 };
  72 MODULE_DEVICE_TABLE(of, bmc150_magn_of_match);
  73
  74 static struct i2c_driver bmc150_magn_driver = {
  75         .driver = {
  76                 .name   = "bmc150_magn_i2c",
  77                 .of_match_table = bmc150_magn_of_match,
  78                 .acpi_match_table = ACPI_PTR(bmc150_magn_acpi_match),
  79                 .pm     = &bmc150_magn_pm_ops,
  80         },
  81         .probe          = bmc150_magn_i2c_probe,
  82         .remove         = bmc150_magn_i2c_remove,
  83         .id_table       = bmc150_magn_i2c_id,
  84 };
  85 module_i2c_driver(bmc150_magn_driver);
  86
  87 MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com");
  88 MODULE_LICENSE("GPL v2");
  89 MODULE_DESCRIPTION("BMC150 I2C magnetometer driver");