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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* ADXL345 3-Axis Digital Accelerometer
*
* Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
*/
#ifndef _ADXL345_H_
#define _ADXL345_H_
#define ADXL345_REG_DEVID 0x00
#define ADXL345_REG_OFSX 0x1E
#define ADXL345_REG_OFSY 0x1F
#define ADXL345_REG_OFSZ 0x20
#define ADXL345_REG_OFS_AXIS(index) (ADXL345_REG_OFSX + (index))
#define ADXL345_REG_BW_RATE 0x2C
#define ADXL345_REG_POWER_CTL 0x2D
#define ADXL345_REG_DATA_FORMAT 0x31
#define ADXL345_REG_DATAX0 0x32
#define ADXL345_REG_DATAY0 0x34
#define ADXL345_REG_DATAZ0 0x36
#define ADXL345_REG_DATA_AXIS(index) \
(ADXL345_REG_DATAX0 + (index) * sizeof(__le16))
#define ADXL345_BW_RATE GENMASK(3, 0)
#define ADXL345_BASE_RATE_NANO_HZ 97656250LL
#define ADXL345_POWER_CTL_MEASURE BIT(3)
#define ADXL345_POWER_CTL_STANDBY 0x00
#define ADXL345_DATA_FORMAT_RANGE GENMASK(1, 0) /* Set the g range */
#define ADXL345_DATA_FORMAT_JUSTIFY BIT(2) /* Left-justified (MSB) mode */
#define ADXL345_DATA_FORMAT_FULL_RES BIT(3) /* Up to 13-bits resolution */
#define ADXL345_DATA_FORMAT_SPI_3WIRE BIT(6) /* 3-wire SPI mode */
#define ADXL345_DATA_FORMAT_SELF_TEST BIT(7) /* Enable a self test */
#define ADXL345_DATA_FORMAT_2G 0
#define ADXL345_DATA_FORMAT_4G 1
#define ADXL345_DATA_FORMAT_8G 2
#define ADXL345_DATA_FORMAT_16G 3
#define ADXL345_DEVID 0xE5
/*
* In full-resolution mode, scale factor is maintained at ~4 mg/LSB
* in all g ranges.
*
* At +/- 16g with 13-bit resolution, scale is computed as:
* (16 + 16) * 9.81 / (2^13 - 1) = 0.0383
*/
#define ADXL345_USCALE 38300
/*
* The Datasheet lists a resolution of Resolution is ~49 mg per LSB. That's
* ~480mm/s**2 per LSB.
*/
#define ADXL375_USCALE 480000
struct adxl345_chip_info {
const char *name;
int uscale;
};
int adxl345_core_probe(struct device *dev, struct regmap *regmap,
int (*setup)(struct device*, struct regmap*));
#endif /* _ADXL345_H_ */
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