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Diffstat (limited to 'include/linux/iio/afe/rescale.h')
| -rw-r--r-- | include/linux/iio/afe/rescale.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/iio/afe/rescale.h b/include/linux/iio/afe/rescale.h new file mode 100644 index 000000000000..6eecb435488f --- /dev/null +++ b/include/linux/iio/afe/rescale.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2018 Axentia Technologies AB + */ + +#ifndef __IIO_RESCALE_H__ +#define __IIO_RESCALE_H__ + +#include <linux/types.h> +#include <linux/iio/iio.h> + +struct device; +struct rescale; + +struct rescale_cfg { + enum iio_chan_type type; + int (*props)(struct device *dev, struct rescale *rescale); +}; + +struct rescale { + const struct rescale_cfg *cfg; + struct iio_channel *source; + struct iio_chan_spec chan; + struct iio_chan_spec_ext_info *ext_info; + bool chan_processed; + s32 numerator; + s32 denominator; + s32 offset; +}; + +int rescale_process_scale(struct rescale *rescale, int scale_type, + int *val, int *val2); +int rescale_process_offset(struct rescale *rescale, int scale_type, + int scale, int scale2, int schan_off, + int *val, int *val2); +#endif /* __IIO_RESCALE_H__ */ |