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