| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2018 Axentia Technologies AB |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef __IIO_RESCALE_H__ |
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| 7 | #define __IIO_RESCALE_H__ |
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| 8 | |
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| 9 | #include <linux/types.h> |
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| 10 | #include <linux/iio/iio.h> |
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| 11 | |
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| 12 | struct device; |
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| 13 | struct rescale; |
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| 14 | |
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| 15 | struct rescale_cfg { |
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| 16 | enum iio_chan_type type; |
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| 17 | int (*props)(struct device *dev, struct rescale *rescale); |
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| 18 | }; |
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| 19 | |
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| 20 | struct rescale { |
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| 21 | const struct rescale_cfg *cfg; |
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| 22 | struct iio_channel *source; |
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| 23 | struct iio_chan_spec chan; |
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| 24 | struct iio_chan_spec_ext_info *ext_info; |
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| 25 | bool chan_processed; |
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| 26 | s32 numerator; |
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| 27 | s32 denominator; |
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| 28 | s32 offset; |
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| 29 | }; |
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| 30 | |
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| 31 | int rescale_process_scale(struct rescale *rescale, int scale_type, |
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| 32 | int *val, int *val2); |
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| 33 | int rescale_process_offset(struct rescale *rescale, int scale_type, |
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| 34 | int scale, int scale2, int schan_off, |
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| 35 | int *val, int *val2); |
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| 36 | #endif /* __IIO_RESCALE_H__ */ |
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| 37 | |
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