| 1 | // SPDX-License-Identifier: GPL-2.0-only |
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| 2 | /* |
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| 3 | * Freescale MPL115A2 pressure/temperature sensor |
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| 4 | * |
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| 5 | * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net> |
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| 6 | * |
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| 7 | * (7-bit I2C slave address 0x60) |
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| 8 | * |
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| 9 | * Datasheet: http://www.nxp.com/files/sensors/doc/data_sheet/MPL115A2.pdf |
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| 10 | */ |
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| 11 | |
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| 12 | #include <linux/module.h> |
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| 13 | #include <linux/i2c.h> |
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| 14 | |
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| 15 | #include "mpl115.h" |
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| 16 | |
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| 17 | static int mpl115_i2c_init(struct device *dev) |
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| 18 | { |
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| 19 | return 0; |
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| 20 | } |
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| 21 | |
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| 22 | static int mpl115_i2c_read(struct device *dev, u8 address) |
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| 23 | { |
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| 24 | return i2c_smbus_read_word_swapped(to_i2c_client(dev), command: address); |
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| 25 | } |
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| 26 | |
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| 27 | static int mpl115_i2c_write(struct device *dev, u8 address, u8 value) |
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| 28 | { |
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| 29 | return i2c_smbus_write_byte_data(to_i2c_client(dev), command: address, value); |
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| 30 | } |
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| 31 | |
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| 32 | static const struct mpl115_ops mpl115_i2c_ops = { |
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| 33 | .init = mpl115_i2c_init, |
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| 34 | .read = mpl115_i2c_read, |
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| 35 | .write = mpl115_i2c_write, |
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| 36 | }; |
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| 37 | |
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| 38 | static int mpl115_i2c_probe(struct i2c_client *client) |
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| 39 | { |
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| 40 | const struct i2c_device_id *id = i2c_client_get_device_id(client); |
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| 41 | if (!i2c_check_functionality(adap: client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) |
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| 42 | return -EOPNOTSUPP; |
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| 43 | |
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| 44 | return mpl115_probe(dev: &client->dev, name: id->name, ops: &mpl115_i2c_ops); |
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| 45 | } |
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| 46 | |
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| 47 | static const struct i2c_device_id mpl115_i2c_id[] = { |
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| 48 | { "mpl115" , 0 }, |
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| 49 | { } |
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| 50 | }; |
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| 51 | MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id); |
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| 52 | |
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| 53 | static struct i2c_driver mpl115_i2c_driver = { |
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| 54 | .driver = { |
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| 55 | .name = "mpl115" , |
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| 56 | .pm = pm_ptr(&mpl115_dev_pm_ops), |
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| 57 | }, |
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| 58 | .probe = mpl115_i2c_probe, |
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| 59 | .id_table = mpl115_i2c_id, |
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| 60 | }; |
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| 61 | module_i2c_driver(mpl115_i2c_driver); |
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| 62 | |
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| 63 | MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>" ); |
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| 64 | MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver" ); |
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| 65 | MODULE_LICENSE("GPL" ); |
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| 66 | MODULE_IMPORT_NS(IIO_MPL115); |
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| 67 | |
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