linux/drivers/iio/accel/mma7455_i2c.c
Javier Martinez Canillas f414bb19b7 iio: accel: mma7455_i2c: Add OF device ID table
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-19 10:57:43 +00:00

65 lines
1.6 KiB
C

/*
* IIO accel I2C driver for Freescale MMA7455L 3-axis 10-bit accelerometer
* Copyright 2015 Joachim Eastwood <manabian@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include "mma7455.h"
static int mma7455_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct regmap *regmap;
const char *name = NULL;
regmap = devm_regmap_init_i2c(i2c, &mma7455_core_regmap);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
if (id)
name = id->name;
return mma7455_core_probe(&i2c->dev, regmap, name);
}
static int mma7455_i2c_remove(struct i2c_client *i2c)
{
return mma7455_core_remove(&i2c->dev);
}
static const struct i2c_device_id mma7455_i2c_ids[] = {
{ "mma7455", 0 },
{ "mma7456", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, mma7455_i2c_ids);
static const struct of_device_id mma7455_of_match[] = {
{ .compatible = "fsl,mma7455" },
{ .compatible = "fsl,mma7456" },
{ }
};
MODULE_DEVICE_TABLE(of, mma7455_of_match);
static struct i2c_driver mma7455_i2c_driver = {
.probe = mma7455_i2c_probe,
.remove = mma7455_i2c_remove,
.id_table = mma7455_i2c_ids,
.driver = {
.name = "mma7455-i2c",
.of_match_table = mma7455_of_match,
},
};
module_i2c_driver(mma7455_i2c_driver);
MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>");
MODULE_DESCRIPTION("Freescale MMA7455L I2C accelerometer driver");
MODULE_LICENSE("GPL v2");