diff options
Diffstat (limited to 'drivers/iio/pressure/mpl115_i2c.c')
-rw-r--r-- | drivers/iio/pressure/mpl115_i2c.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/iio/pressure/mpl115_i2c.c b/drivers/iio/pressure/mpl115_i2c.c new file mode 100644 index 0000000000..fcbdadf4a5 --- /dev/null +++ b/drivers/iio/pressure/mpl115_i2c.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Freescale MPL115A2 pressure/temperature sensor + * + * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net> + * + * (7-bit I2C slave address 0x60) + * + * Datasheet: http://www.nxp.com/files/sensors/doc/data_sheet/MPL115A2.pdf + */ + +#include <linux/module.h> +#include <linux/i2c.h> + +#include "mpl115.h" + +static int mpl115_i2c_init(struct device *dev) +{ + return 0; +} + +static int mpl115_i2c_read(struct device *dev, u8 address) +{ + return i2c_smbus_read_word_swapped(to_i2c_client(dev), address); +} + +static int mpl115_i2c_write(struct device *dev, u8 address, u8 value) +{ + return i2c_smbus_write_byte_data(to_i2c_client(dev), address, value); +} + +static const struct mpl115_ops mpl115_i2c_ops = { + .init = mpl115_i2c_init, + .read = mpl115_i2c_read, + .write = mpl115_i2c_write, +}; + +static int mpl115_i2c_probe(struct i2c_client *client) +{ + const struct i2c_device_id *id = i2c_client_get_device_id(client); + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) + return -EOPNOTSUPP; + + return mpl115_probe(&client->dev, id->name, &mpl115_i2c_ops); +} + +static const struct i2c_device_id mpl115_i2c_id[] = { + { "mpl115", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, mpl115_i2c_id); + +static struct i2c_driver mpl115_i2c_driver = { + .driver = { + .name = "mpl115", + .pm = pm_ptr(&mpl115_dev_pm_ops), + }, + .probe = mpl115_i2c_probe, + .id_table = mpl115_i2c_id, +}; +module_i2c_driver(mpl115_i2c_driver); + +MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>"); +MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(IIO_MPL115); |