drivers/iio/magnetometer/bmc150_magn_i2c.c

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