linux-kernel - [PATCH v3 2/3] Documentation: ABI: added filter mode doc in sysfs-bus-iio

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Date: Wed, 19 Jun 2024 15:22:43 +0300
From: Ramona Alexandra Nechita <ramona.nechita@...log.com>
To: <linux-iio@...r.kernel.org>
CC: Ramona Alexandra Nechita <ramona.nechita@...log.com>,
        Jonathan Cameron
	<jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Cosmin Tanislav
	<cosmin.tanislav@...log.com>,
        Michael Hennerich
	<Michael.Hennerich@...log.com>,
        Rob Herring <robh@...nel.org>,
        "Krzysztof
 Kozlowski" <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Andy
 Shevchenko" <andriy.shevchenko@...ux.intel.com>,
        Nuno Sa
	<nuno.sa@...log.com>, Maksim Kiselev <bigunclemax@...il.com>,
        Marcelo Schmitt
	<marcelo.schmitt@...log.com>,
        Marius Cristea <marius.cristea@...rochip.com>,
        Mike Looijmans <mike.looijmans@...ic.nl>,
        Okan Sahin <okan.sahin@...log.com>,
        Ivan Mikhaylov <fr0st61te@...il.com>,
        Marcus Folkesson
	<marcus.folkesson@...il.com>,
        Liam Beguin <liambeguin@...il.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: [PATCH v3 2/3] Documentation: ABI: added filter mode doc in sysfs-bus-iio

The filter mode / filter type property is used for ad4130
and ad7779 drivers, therefore the ABI doc file for ad4130
was removed, merging both of them in the sysfs-bus-iio

Signed-off-by: Ramona Alexandra Nechita <ramona.nechita@...log.com>
---
 Documentation/ABI/testing/sysfs-bus-iio       |  7 +++
 .../ABI/testing/sysfs-bus-iio-adc-ad4130      | 46 -------------------
 2 files changed, 7 insertions(+), 46 deletions(-)
 delete mode 100644 Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 2e6d5ebfd3c7..c808ec9c4a81 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -2225,6 +2225,13 @@ Description:
 		An example format is 16-bytes, 2-digits-per-byte, HEX-string
 		representing the sensor unique ID number.
 
+What:		/sys/bus/iio/devices/iio:deviceX/filter_type_available
+What:		/sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available
+KernelVersion:	6.1
+Contact:	linux-iio@...r.kernel.org
+Description:
+		Reading returns a list with the possible filter modes.
+
 What:		/sys/.../events/in_proximity_thresh_either_runningperiod
 KernelVersion:	6.6
 Contact:	linux-iio@...r.kernel.org
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130 b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130
deleted file mode 100644
index f24ed6687e90..000000000000
--- a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130
+++ /dev/null
@@ -1,46 +0,0 @@
-What:		/sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available
-KernelVersion:  6.2
-Contact:	linux-iio@...r.kernel.org
-Description:
-		Reading returns a list with the possible filter modes.
-
-		  * "sinc4"       - Sinc 4. Excellent noise performance. Long
-                    1st conversion time. No natural 50/60Hz rejection.
-
-		  * "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion
-		    time.
-
-		  * "sinc3"	      - Sinc3. Moderate 1st conversion time.
-		    Good noise performance.
-
-		  * "sinc3+rej60" - Sinc3 + 60Hz rejection. At a sampling
-		    frequency of 50Hz, achieves simultaneous 50Hz and 60Hz
-		    rejection.
-
-		  * "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion
-		    time. Best used with a sampling frequency of at least
-		    216.19Hz.
-
-		  * "sinc3+pf1"   - Sinc3 + Post Filter 1. 53dB rejection @
-		    50Hz, 58dB rejection @ 60Hz.
-
-		  * "sinc3+pf2"   - Sinc3 + Post Filter 2. 70dB rejection @
-		    50Hz, 70dB rejection @ 60Hz.
-
-		  * "sinc3+pf3"   - Sinc3 + Post Filter 3. 99dB rejection @
-		    50Hz, 103dB rejection @ 60Hz.
-
-		  * "sinc3+pf4"   - Sinc3 + Post Filter 4. 103dB rejection @
-		    50Hz, 109dB rejection @ 60Hz.
-
-What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_mode
-KernelVersion:  6.2
-Contact:	linux-iio@...r.kernel.org
-Description:
-		Set the filter mode of the differential channel. When the filter
-		mode changes, the in_voltageY-voltageZ_sampling_frequency and
-		in_voltageY-voltageZ_sampling_frequency_available attributes
-		might also change to accommodate the new filter mode.
-		If the current sampling frequency is out of range for the new
-		filter mode, the sampling frequency will be changed to the
-		closest valid one.
-- 
2.43.0