1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Freescale MPL115A2 pressure/temperature sensor
4 *
5 * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
6 *
7 * (7-bit I2C slave address 0x60)
8 *
9 * Datasheet: http://www.nxp.com/files/sensors/doc/data_sheet/MPL115A2.pdf
10 */
11
12 #include <linux/module.h>
13 #include <linux/i2c.h>
14
15 #include "mpl115.h"
16
mpl115_i2c_init(struct device * dev)17 static int mpl115_i2c_init(struct device *dev)
18 {
19 return 0;
20 }
21
mpl115_i2c_read(struct device * dev,u8 address)22 static int mpl115_i2c_read(struct device *dev, u8 address)
23 {
24 return i2c_smbus_read_word_swapped(to_i2c_client(dev), address);
25 }
26
mpl115_i2c_write(struct device * dev,u8 address,u8 value)27 static int mpl115_i2c_write(struct device *dev, u8 address, u8 value)
28 {
29 return i2c_smbus_write_byte_data(to_i2c_client(dev), address, value);
30 }
31
32 static const struct mpl115_ops mpl115_i2c_ops = {
33 .init = mpl115_i2c_init,
34 .read = mpl115_i2c_read,
35 .write = mpl115_i2c_write,
36 };
37
mpl115_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)38 static int mpl115_i2c_probe(struct i2c_client *client,
39 const struct i2c_device_id *id)
40 {
41 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
42 return -EOPNOTSUPP;
43
44 return mpl115_probe(&client->dev, id->name, &mpl115_i2c_ops);
45 }
46
47 static const struct i2c_device_id mpl115_i2c_id[] = {
48 { "mpl115", 0 },
49 { }
50 };
51 MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id);
52
53 static struct i2c_driver mpl115_i2c_driver = {
54 .driver = {
55 .name = "mpl115",
56 },
57 .probe = mpl115_i2c_probe,
58 .id_table = mpl115_i2c_id,
59 };
60 module_i2c_driver(mpl115_i2c_driver);
61
62 MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
63 MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver");
64 MODULE_LICENSE("GPL");
65