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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2021 Analog Devices, Inc.
* Author: Cosmin Tanislav <cosmin.tanislav@analog.com>
*/
#include <linux/i2c.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include "adxl367.h"
#define ADXL367_I2C_FIFO_DATA 0x42
struct adxl367_i2c_state {
struct regmap *regmap;
};
static bool adxl367_readable_noinc_reg(struct device *dev, unsigned int reg)
{
return reg == ADXL367_I2C_FIFO_DATA;
}
static int adxl367_i2c_read_fifo(void *context, __be16 *fifo_buf,
unsigned int fifo_entries)
{
struct adxl367_i2c_state *st = context;
return regmap_noinc_read(st->regmap, ADXL367_I2C_FIFO_DATA, fifo_buf,
fifo_entries * sizeof(*fifo_buf));
}
static const struct regmap_config adxl367_i2c_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.readable_noinc_reg = adxl367_readable_noinc_reg,
};
static const struct adxl367_ops adxl367_i2c_ops = {
.read_fifo = adxl367_i2c_read_fifo,
};
static int adxl367_i2c_probe(struct i2c_client *client)
{
struct adxl367_i2c_state *st;
struct regmap *regmap;
st = devm_kzalloc(&client->dev, sizeof(*st), GFP_KERNEL);
if (!st)
return -ENOMEM;
regmap = devm_regmap_init_i2c(client, &adxl367_i2c_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
st->regmap = regmap;
return adxl367_probe(&client->dev, &adxl367_i2c_ops, st, regmap,
client->irq);
}
static const struct i2c_device_id adxl367_i2c_id[] = {
{ "adxl367", 0 },
{ },
};
MODULE_DEVICE_TABLE(i2c, adxl367_i2c_id);
static const struct of_device_id adxl367_of_match[] = {
{ .compatible = "adi,adxl367" },
{ },
};
MODULE_DEVICE_TABLE(of, adxl367_of_match);
static struct i2c_driver adxl367_i2c_driver = {
.driver = {
.name = "adxl367_i2c",
.of_match_table = adxl367_of_match,
},
.probe = adxl367_i2c_probe,
.id_table = adxl367_i2c_id,
};
module_i2c_driver(adxl367_i2c_driver);
MODULE_IMPORT_NS(IIO_ADXL367);
MODULE_AUTHOR("Cosmin Tanislav <cosmin.tanislav@analog.com>");
MODULE_DESCRIPTION("Analog Devices ADXL367 3-axis accelerometer I2C driver");
MODULE_LICENSE("GPL");
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