Some magnetometers can perform a number of repetitions in HW for each measurement to increase accuracy. One example is Bosch BMC150: http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS000-04.pdf. Introduce an interface to set the number of repetitions for these devices. Signed-off-by: Irina Tirdea <irina.tirdea@xxxxxxxxx> --- Documentation/ABI/testing/sysfs-bus-iio | 10 ++++++++++ drivers/iio/industrialio-core.c | 1 + include/linux/iio/iio.h | 1 + 3 files changed, 12 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 866b4ec..74c1444 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -1375,3 +1375,13 @@ Description: The emissivity ratio of the surface in the field of view of the contactless temperature sensor. Emissivity varies from 0 to 1, with 1 being the emissivity of a black body. + +What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_calibrepetitions +What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_calibrepetitions +What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_calibrepetitions +KernelVersion: 4.2 +Contact: linux-iio@xxxxxxxxxxxxxxx +Description: + Hardware applied number of repetitions for acquiring one + data point. The HW will do <type>[_name]_calibrepetitions + measurements and return the average value as output data. diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 7c98bc1..9e0da7f 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -129,6 +129,7 @@ static const char * const iio_chan_info_postfix[] = { [IIO_CHAN_INFO_DEBOUNCE_COUNT] = "debounce_count", [IIO_CHAN_INFO_DEBOUNCE_TIME] = "debounce_time", [IIO_CHAN_INFO_CALIBEMISSIVITY] = "calibemissivity", + [IIO_CHAN_INFO_CALIBREPETITIONS] = "calibrepetitions", }; /** diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index b1e46ae..07fbfb2 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -44,6 +44,7 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_DEBOUNCE_COUNT, IIO_CHAN_INFO_DEBOUNCE_TIME, IIO_CHAN_INFO_CALIBEMISSIVITY, + IIO_CHAN_INFO_CALIBREPETITIONS, }; enum iio_shared_by { -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
