1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Freescale MPL115A2 pressure/temperature sensor
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * (7-bit I2C slave address 0x60)
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Datasheet: http://www.nxp.com/files/sensors/doc/data_sheet/MPL115A2.pdf
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/module.h>
13*4882a593Smuzhiyun #include <linux/i2c.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include "mpl115.h"
16*4882a593Smuzhiyun
mpl115_i2c_init(struct device * dev)17*4882a593Smuzhiyun static int mpl115_i2c_init(struct device *dev)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun return 0;
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun
mpl115_i2c_read(struct device * dev,u8 address)22*4882a593Smuzhiyun static int mpl115_i2c_read(struct device *dev, u8 address)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun return i2c_smbus_read_word_swapped(to_i2c_client(dev), address);
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun
mpl115_i2c_write(struct device * dev,u8 address,u8 value)27*4882a593Smuzhiyun static int mpl115_i2c_write(struct device *dev, u8 address, u8 value)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun return i2c_smbus_write_byte_data(to_i2c_client(dev), address, value);
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun static const struct mpl115_ops mpl115_i2c_ops = {
33*4882a593Smuzhiyun .init = mpl115_i2c_init,
34*4882a593Smuzhiyun .read = mpl115_i2c_read,
35*4882a593Smuzhiyun .write = mpl115_i2c_write,
36*4882a593Smuzhiyun };
37*4882a593Smuzhiyun
mpl115_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)38*4882a593Smuzhiyun static int mpl115_i2c_probe(struct i2c_client *client,
39*4882a593Smuzhiyun const struct i2c_device_id *id)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
42*4882a593Smuzhiyun return -EOPNOTSUPP;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun return mpl115_probe(&client->dev, id->name, &mpl115_i2c_ops);
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun static const struct i2c_device_id mpl115_i2c_id[] = {
48*4882a593Smuzhiyun { "mpl115", 0 },
49*4882a593Smuzhiyun { }
50*4882a593Smuzhiyun };
51*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun static struct i2c_driver mpl115_i2c_driver = {
54*4882a593Smuzhiyun .driver = {
55*4882a593Smuzhiyun .name = "mpl115",
56*4882a593Smuzhiyun },
57*4882a593Smuzhiyun .probe = mpl115_i2c_probe,
58*4882a593Smuzhiyun .id_table = mpl115_i2c_id,
59*4882a593Smuzhiyun };
60*4882a593Smuzhiyun module_i2c_driver(mpl115_i2c_driver);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
63*4882a593Smuzhiyun MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver");
64*4882a593Smuzhiyun MODULE_LICENSE("GPL");
65