From 5bc2ea60897e0f899fb93930dd867dae7c8eb11f Mon Sep 17 00:00:00 2001 From: Javier Carrasco Date: Mon, 11 Dec 2023 20:27:47 +0800 Subject: [PATCH] iio: core: introduce trough info element for minimum values The IIO_CHAN_INFO_PEAK info element is used for maximum values and currently there is no equivalent for minimum values. Instead of overloading the existing peak info element, a new info element can be added. In principle there is no need to add a _TROUGH_SCALE element as the scale will be the same as the one required for INFO_PEAK, which in turn is sometimes omitted if a single scale for peaks and raw values is required. Add an IIO_CHAN_INFO_TROUGH info element for minimum values. Signed-off-by: Javier Carrasco Link: https://lore.kernel.org/r/20231211122747.9723-1-579lpy@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 1 + include/linux/iio/types.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index f6a123d397db..9a85752124dd 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -184,6 +184,7 @@ static const char * const iio_chan_info_postfix[] = { [IIO_CHAN_INFO_THERMOCOUPLE_TYPE] = "thermocouple_type", [IIO_CHAN_INFO_CALIBAMBIENT] = "calibambient", [IIO_CHAN_INFO_ZEROPOINT] = "zeropoint", + [IIO_CHAN_INFO_TROUGH] = "trough_raw", }; /** * iio_device_id() - query the unique ID for the device diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 117bde7d6ad7..d89982c98368 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -68,6 +68,7 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_THERMOCOUPLE_TYPE, IIO_CHAN_INFO_CALIBAMBIENT, IIO_CHAN_INFO_ZEROPOINT, + IIO_CHAN_INFO_TROUGH, }; #endif /* _IIO_TYPES_H_ */