mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-07-14 21:43:02 +02:00
Liam BeguinandGreg Kroah-Hartman
c1eeb494f6
[ Upstream commita29c328365] This is a preparatory change required for the addition of temperature sensing front ends. Signed-off-by: Liam Beguin <liambeguin@gmail.com> Reviewed-by: Peter Rosin <peda@axentia.se> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20220213025739.2561834-4-liambeguin@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Stable-dep-of:bee448390e("iio: afe: rescale: Accept only offset channels") Signed-off-by: Sasha Levin <sashal@kernel.org>
37 lines
833 B
C
37 lines
833 B
C
/* 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__ */
|