drivers/misc/bmp085-i2c.c

   1 /*
   2  * Copyright (c) 2012  Bosch Sensortec GmbH
   3  * Copyright (c) 2012  Unixphere AB
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/i2c.h>
  22 #include <linux/err.h>
  23 #include "bmp085.h"
  24
  25 #define BMP085_I2C_ADDRESS      0x77
  26
  27 static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS,
  28                                                         I2C_CLIENT_END };
  29
  30 static int bmp085_i2c_detect(struct i2c_client *client,
  31                              struct i2c_board_info *info)
  32 {
  33         if (client->addr != BMP085_I2C_ADDRESS)
  34                 return -ENODEV;
  35
  36         return bmp085_detect(&client->dev);
  37 }
  38
  39 static int bmp085_i2c_probe(struct i2c_client *client,
  40                                       const struct i2c_device_id *id)
  41 {
  42         int err;
  43         struct regmap *regmap = devm_regmap_init_i2c(client,
  44                                                      &bmp085_regmap_config);
  45
  46         if (IS_ERR(regmap)) {
  47                 err = PTR_ERR(regmap);
  48                 dev_err(&client->dev, "Failed to init regmap: %d\n", err);
  49                 return err;
  50         }
  51
  52         return bmp085_probe(&client->dev, regmap, client->irq);
  53 }
  54
  55 static int bmp085_i2c_remove(struct i2c_client *client)
  56 {
  57         return bmp085_remove(&client->dev);
  58 }
  59
  60 static const struct i2c_device_id bmp085_id[] = {
  61         { BMP085_NAME, 0 },
  62         { "bmp180", 0 },
  63         { }
  64 };
  65 MODULE_DEVICE_TABLE(i2c, bmp085_id);
  66
  67 static struct i2c_driver bmp085_i2c_driver = {
  68         .driver = {
  69                 .owner  = THIS_MODULE,
  70                 .name   = BMP085_NAME,
  71         },
  72         .id_table       = bmp085_id,
  73         .probe          = bmp085_i2c_probe,
  74         .remove         = bmp085_i2c_remove,
  75
  76         .detect         = bmp085_i2c_detect,
  77         .address_list   = normal_i2c
  78 };
  79
  80 module_i2c_driver(bmp085_i2c_driver);
  81
  82 MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
  83 MODULE_DESCRIPTION("BMP085 I2C bus driver");
  84 MODULE_LICENSE("GPL");