| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * ADXL345 3-Axis Digital Accelerometer |
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| 4 | * |
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| 5 | * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com> |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef _ADXL345_H_ |
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| 9 | #define _ADXL345_H_ |
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| 10 | |
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| 11 | /* |
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| 12 | * In full-resolution mode, scale factor is maintained at ~4 mg/LSB |
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| 13 | * in all g ranges. |
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| 14 | * |
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| 15 | * At +/- 16g with 13-bit resolution, scale is computed as: |
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| 16 | * (16 + 16) * 9.81 / (2^13 - 1) = 0.0383 |
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| 17 | */ |
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| 18 | #define ADXL345_USCALE 38300 |
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| 19 | |
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| 20 | /* |
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| 21 | * The Datasheet lists a resolution of Resolution is ~49 mg per LSB. That's |
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| 22 | * ~480mm/s**2 per LSB. |
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| 23 | */ |
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| 24 | #define ADXL375_USCALE 480000 |
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| 25 | |
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| 26 | struct adxl345_chip_info { |
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| 27 | const char *name; |
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| 28 | int uscale; |
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| 29 | }; |
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| 30 | |
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| 31 | int adxl345_core_probe(struct device *dev, struct regmap *regmap); |
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| 32 | |
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| 33 | #endif /* _ADXL345_H_ */ |
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| 34 | |
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