tjh.dev
Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * ADXL345 3-Axis Digital Accelerometer
4 *
5 * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
6 */
7
8#ifndef _ADXL345_H_
9#define _ADXL345_H_
10
11/*
12 * In full-resolution mode, scale factor is maintained at ~4 mg/LSB
13 * in all g ranges.
14 *
15 * At +/- 16g with 13-bit resolution, scale is computed as:
16 * (16 + 16) * 9.81 / (2^13 - 1) = 0.0383
17 */
18#define ADXL345_USCALE 38300
19
20/*
21 * The Datasheet lists a resolution of Resolution is ~49 mg per LSB. That's
22 * ~480mm/s**2 per LSB.
23 */
24#define ADXL375_USCALE 480000
25
26struct adxl345_chip_info {
27 const char *name;
28 int uscale;
29};
30
31int adxl345_core_probe(struct device *dev, struct regmap *regmap);
32
33#endif /* _ADXL345_H_ */