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 
20 static int mpl115_i2c_init(struct device *dev)
21 {
22 	return 0;
23 }
24 
25 static int mpl115_i2c_read(struct device *dev, u8 address)
26 {
27 	return i2c_smbus_read_word_swapped(to_i2c_client(dev), address);
28 }
29 
30 static 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 
35 static const struct mpl115_ops mpl115_i2c_ops = {
36 	.init = mpl115_i2c_init,
37 	.read = mpl115_i2c_read,
38 	.write = mpl115_i2c_write,
39 };
40 
41 static 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 
50 static const struct i2c_device_id mpl115_i2c_id[] = {
51 	{ "mpl115", 0 },
52 	{ }
53 };
54 MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id);
55 
56 static struct i2c_driver mpl115_i2c_driver = {
57 	.driver = {
58 		.name	= "mpl115",
59 	},
60 	.probe = mpl115_i2c_probe,
61 	.id_table = mpl115_i2c_id,
62 };
63 module_i2c_driver(mpl115_i2c_driver);
64 
65 MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
66 MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver");
67 MODULE_LICENSE("GPL");
68