iio/pressure/mpl115_i2c.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Freescale MPL115A2 pressure/temperature sensor
0004  *
0005  * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
0006  *
0007  * (7-bit I2C slave address 0x60)
0008  *
0009  * Datasheet: http://www.nxp.com/files/sensors/doc/data_sheet/MPL115A2.pdf
0010  */
0011
0012 #include <linux/module.h>
0013 #include <linux/i2c.h>
0014
0015 #include "mpl115.h"
0016
0017 static int mpl115_i2c_init(struct device *dev)
0018 {
0019     return 0;
0020 }
0021
0022 static int mpl115_i2c_read(struct device *dev, u8 address)
0023 {
0024     return i2c_smbus_read_word_swapped(to_i2c_client(dev), address);
0025 }
0026
0027 static int mpl115_i2c_write(struct device *dev, u8 address, u8 value)
0028 {
0029     return i2c_smbus_write_byte_data(to_i2c_client(dev), address, value);
0030 }
0031
0032 static const struct mpl115_ops mpl115_i2c_ops = {
0033     .init = mpl115_i2c_init,
0034     .read = mpl115_i2c_read,
0035     .write = mpl115_i2c_write,
0036 };
0037
0038 static int mpl115_i2c_probe(struct i2c_client *client,
0039              const struct i2c_device_id *id)
0040 {
0041     if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
0042         return -EOPNOTSUPP;
0043
0044     return mpl115_probe(&client->dev, id->name, &mpl115_i2c_ops);
0045 }
0046
0047 static const struct i2c_device_id mpl115_i2c_id[] = {
0048     { "mpl115", 0 },
0049     { }
0050 };
0051 MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id);
0052
0053 static struct i2c_driver mpl115_i2c_driver = {
0054     .driver = {
0055         .name   = "mpl115",
0056     },
0057     .probe = mpl115_i2c_probe,
0058     .id_table = mpl115_i2c_id,
0059 };
0060 module_i2c_driver(mpl115_i2c_driver);
0061
0062 MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
0063 MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver");
0064 MODULE_LICENSE("GPL");
0065 MODULE_IMPORT_NS(IIO_MPL115);