From ddfb97d8f06c98fa5d80bbb6a997155a838161e9 Mon Sep 17 00:00:00 2001 From: Andrea Merello Date: Wed, 20 Nov 2019 15:47:52 +0100 Subject: iio: core: add thermocouple_type standard attribute We have a couple of thermocouple IIO drivers, supporting several chips. Some of them support only one specific thermocouple type (e.g. "K", "J"), one of them can be configured to work with several different thermocouple types. In certain applications thermocouples could be externally connected to the chip by the user. This patch introduces a new IIO standard attribute to report the supported thermocouple type and, where applicable, to allow it to be dynamically set using sysfs. Cc: Hartmut Knaack Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Cc: Colin Ian King Cc: Patrick Havelange Cc: Matt Weber Cc: Matt Ranostay Cc: Chuhong Yuan Cc: Daniel Gomez Cc: linux-iio@vger.kernel.org Signed-off-by: Andrea Merello 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 958b5c48a86f..fa2c3b321bfd 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -161,6 +161,7 @@ static const char * const iio_chan_info_postfix[] = { [IIO_CHAN_INFO_DEBOUNCE_TIME] = "debounce_time", [IIO_CHAN_INFO_CALIBEMISSIVITY] = "calibemissivity", [IIO_CHAN_INFO_OVERSAMPLING_RATIO] = "oversampling_ratio", + [IIO_CHAN_INFO_THERMOCOUPLE_TYPE] = "thermocouple_type", }; /** diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 8e0026da38c9..e6fd3645963c 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -58,6 +58,7 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_DEBOUNCE_TIME, IIO_CHAN_INFO_CALIBEMISSIVITY, IIO_CHAN_INFO_OVERSAMPLING_RATIO, + IIO_CHAN_INFO_THERMOCOUPLE_TYPE, }; #endif /* _IIO_TYPES_H_ */ -- cgit v1.2.3