Commit 41a7d671 authored Jun 26, 2022 by Jonathan Cameron

iio: ABI: stm32-timer-trigger: Fuse unusual ABI into main doc.

We can't duplicate the description of sampling_frequency. This device
has some unusual requirements which we solved by giving a
sampling_frequency of 0 special meaning. As such add a note
about this unusual usage to the main documentation.

Whilst I don't particularly like this resolution, it is the best
I could come up with given earlier discussion on this topic.

Link: https://lore.kernel.org/linux-iio/20210315101217.00002c50@Huawei.com/

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/20220626165511.602202-4-jic23@kernel.org

parent c089f6fc

Documentation/ABI/testing/sysfs-bus-iio

+3 −0

Original line number	Diff line number	Diff line
		@@ -107,6 +107,9 @@ Description:
		relevant directories. If it affects all of the above
		then it is to be found in the base device directory.

		The stm32-timer-trigger has the additional characteristic that
		a sampling_frequency of 0 is defined to stop sampling.

		What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
		What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available
		What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available

Documentation/ABI/testing/sysfs-bus-iio-timer-stm32

+0 −8

Original line number	Diff line number	Diff line
		@@ -90,14 +90,6 @@ Description:
		Reading returns the current master modes.
		Writing set the master mode

		What: /sys/bus/iio/devices/triggerX/sampling_frequency
		KernelVersion: 4.11
		Contact: benjamin.gaignard@st.com
		Description:
		Reading returns the current sampling frequency.
		Writing an value different of 0 set and start sampling.
		Writing 0 stop sampling.

		What: /sys/bus/iio/devices/iio:deviceX/in_count0_preset
		KernelVersion: 4.12
		Contact: benjamin.gaignard@st.com