68 lines
1.6 KiB
C
Executable file
68 lines
1.6 KiB
C
Executable file
/*
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* Freescale MPL115A2 pressure/temperature sensor
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*
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* Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
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*
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* This file is subject to the terms and conditions of version 2 of
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* the GNU General Public License. See the file COPYING in the main
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* directory of this archive for more details.
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*
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* (7-bit I2C slave address 0x60)
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*
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* Datasheet: http://www.nxp.com/files/sensors/doc/data_sheet/MPL115A2.pdf
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include "mpl115.h"
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static int mpl115_i2c_init(struct device *dev)
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{
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return 0;
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}
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static int mpl115_i2c_read(struct device *dev, u8 address)
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{
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return i2c_smbus_read_word_swapped(to_i2c_client(dev), address);
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}
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static int mpl115_i2c_write(struct device *dev, u8 address, u8 value)
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{
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return i2c_smbus_write_byte_data(to_i2c_client(dev), address, value);
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}
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static const struct mpl115_ops mpl115_i2c_ops = {
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.init = mpl115_i2c_init,
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.read = mpl115_i2c_read,
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.write = mpl115_i2c_write,
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};
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static int mpl115_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
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return -EOPNOTSUPP;
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return mpl115_probe(&client->dev, id->name, &mpl115_i2c_ops);
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}
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static const struct i2c_device_id mpl115_i2c_id[] = {
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{ "mpl115", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id);
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static struct i2c_driver mpl115_i2c_driver = {
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.driver = {
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.name = "mpl115",
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},
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.probe = mpl115_i2c_probe,
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.id_table = mpl115_i2c_id,
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};
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module_i2c_driver(mpl115_i2c_driver);
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MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
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MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver");
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MODULE_LICENSE("GPL");
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