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 26 struct adxl345_chip_info { 27 const char *name; 28 int uscale; 29 }; 30 31 int adxl345_core_probe(struct device *dev, struct regmap *regmap); 32 33 #endif /* _ADXL345_H_ */ 34