projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| c984b9cb AM |
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)) | |
| f8d9d3b4 | 45 | return -EOPNOTSUPP; |
| c984b9cb AM |
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"); |