LXR linux/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
  27static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS,
  28                                                        I2C_CLIENT_END };
  29
  30static 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
  39static 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
  55static int bmp085_i2c_remove(struct i2c_client *client)
  56{
  57        return bmp085_remove(&client->dev);
  58}
  59
  60static const struct i2c_device_id bmp085_id[] = {
  61        { BMP085_NAME, 0 },
  62        { "bmp180", 0 },
  63        { }
  64};
  65MODULE_DEVICE_TABLE(i2c, bmp085_id);
  66
  67static struct i2c_driver bmp085_i2c_driver = {
  68        .driver = {
  69                .name   = BMP085_NAME,
  70        },
  71        .id_table       = bmp085_id,
  72        .probe          = bmp085_i2c_probe,
  73        .remove         = bmp085_i2c_remove,
  74
  75        .detect         = bmp085_i2c_detect,
  76        .address_list   = normal_i2c
  77};
  78
  79module_i2c_driver(bmp085_i2c_driver);
  80
  81MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
  82MODULE_DESCRIPTION("BMP085 I2C bus driver");
  83MODULE_LICENSE("GPL");
  84