LXR linux/drivers/iio/pressure/mpl115

   1/*
   2 * Freescale MPL115A2 pressure/temperature sensor
   3 *
   4 * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
   5 *
   6 * This file is subject to the terms and conditions of version 2 of
   7 * the GNU General Public License.  See the file COPYING in the main
   8 * directory of this archive for more details.
   9 *
  10 * (7-bit I2C slave address 0x60)
  11 *
  12 * Datasheet: http://www.nxp.com/files/sensors/doc/data_sheet/MPL115A2.pdf
  13 */
  14
  15#include <linux/module.h>
  16#include <linux/i2c.h>
  17
  18#include "mpl115.h"
  19
  20static int mpl115_i2c_init(struct device *dev)
  21{
  22        return 0;
  23}
  24
  25static int mpl115_i2c_read(struct device *dev, u8 address)
  26{
  27        return i2c_smbus_read_word_swapped(to_i2c_client(dev), address);
  28}
  29
  30static int mpl115_i2c_write(struct device *dev, u8 address, u8 value)
  31{
  32        return i2c_smbus_write_byte_data(to_i2c_client(dev), address, value);
  33}
  34
  35static const struct mpl115_ops mpl115_i2c_ops = {
  36        .init = mpl115_i2c_init,
  37        .read = mpl115_i2c_read,
  38        .write = mpl115_i2c_write,
  39};
  40
  41static int mpl115_i2c_probe(struct i2c_client *client,
  42                         const struct i2c_device_id *id)
  43{
  44        if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
  45                return -EOPNOTSUPP;
  46
  47        return mpl115_probe(&client->dev, id->name, &mpl115_i2c_ops);
  48}
  49
  50static const struct i2c_device_id mpl115_i2c_id[] = {
  51        { "mpl115", 0 },
  52        { }
  53};
  54MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id);
  55
  56static struct i2c_driver mpl115_i2c_driver = {
  57        .driver = {
  58                .name   = "mpl115",
  59        },
  60        .probe = mpl115_i2c_probe,
  61        .id_table = mpl115_i2c_id,
  62};
  63module_i2c_driver(mpl115_i2c_driver);
  64
  65MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
  66MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver");
  67MODULE_LICENSE("GPL");
  68