linux-kernel - [PATCH 2/4] iio: dac: ad3530r: Add ABI file for the AD3530R DAC

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Message-ID: <20250319-togreg-v1-2-d8244a502f2c@analog.com>
Date: Wed, 19 Mar 2025 11:47:56 +0800
From: Kim Seer Paller <kimseer.paller@...log.com>
To: Jonathan Cameron <jic23@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>
CC: <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        Kim Seer Paller <kimseer.paller@...log.com>
Subject: [PATCH 2/4] iio: dac: ad3530r: Add ABI file for the AD3530R DAC

Define muxout_select and muxout_select_available sysfs interface for the
AD3530R and AD3531R DAC.

Signed-off-by: Kim Seer Paller <kimseer.paller@...log.com>
---
 .../ABI/testing/sysfs-bus-iio-dac-ad3530r          | 68 ++++++++++++++++++++++
 MAINTAINERS                                        |  7 +++
 2 files changed, 75 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dac-ad3530r b/Documentation/ABI/testing/sysfs-bus-iio-dac-ad3530r
new file mode 100644
index 0000000000000000000000000000000000000000..9d3126952fd1c5214afb895c4972dc4a891ed7d4
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-dac-ad3530r
@@ -0,0 +1,68 @@
+What:		/sys/bus/iio/devices/iio:deviceX/muxout_select
+KernelVersion:
+Contact:	linux-iio@...r.kernel.org
+Description:
+		Selects which of the multiplexer's input signals will be
+		monitored on the MUX_OUT pin.
+		* powered_down - MUX_OUT pin is powered down. An 80kΩ impedance
+				 can be seen at the MUX_OUT pin.
+		* vout0 - Voltage representation of VOUT0.
+		* iout0_source - Voltage representation of IOUT0 (source mode).
+		* iout0_sink - Voltage representation of IOUT0 (sink mode).
+		* vout1 - Voltage representation of VOUT1.
+		* iout1_source - Voltage representation of IOUT1 (source mode).
+		* iout1_sink - Voltage representation of IOUT1 (sink mode).
+		* vout2 - Voltage representation of VOUT2.
+		* iout2_source - Voltage representation of IOUT2 (source mode).
+		* iout2_sink - Voltage representation of IOUT2 (sink mode).
+		* vout3 - Voltage representation of VOUT3
+		* iout3_source - Voltage representation of IOUT3 (source mode).
+		* iout3_sink - Voltage representation of IOUT3 (sink mode).
+		* vout4 - Voltage representation of VOUT4.
+		* iout4_source - Voltage representation of IOUT4 (source mode).
+		* iout4_sink - Voltage representation of IOUT4 (sink mode).
+		* vout5 - Voltage representation of VOUT5.
+		* iout5_source - Voltage representation of IOUT5 (source mode).
+		* iout5_sink - Voltage representation of IOUT5 (sink mode).
+		* vout6 - Voltage representation of VOUT6.
+		* iout6_source - Voltage representation of IOUT6 (source mode).
+		* iout6_sink - Voltage representation of IOUT6 (sink mode).
+		* vout7 - Voltage representation of VOUT7.
+		* iout7_source - Voltage representation of IOUT7 (source mode).
+		* iout7_sink - Voltage representation of IOUT7 (sink mode).
+		* die_temp - Voltage representation of internal die temperature.
+		* agnd - MUX_OUT pin internally tied to AGND.
+
+What:		/sys/bus/iio/devices/iio:deviceX/muxout_select_available
+KernelVersion:
+Contact:	linux-iio@...r.kernel.org
+Description:
+		Reading this returns the valid values that can be written to the
+		muxout_select attribute:
+		* powered_down
+		* vout0
+		* iout0_source
+		* iout0_sink
+		* vout1
+		* iout1_source
+		* iout1_sink
+		* vout2
+		* iout2_source
+		* iout2_sink
+		* vout3
+		* iout3_source
+		* iout3_sink
+		* vout4
+		* iout4_source
+		* iout4_sink
+		* vout5
+		* iout5_source
+		* iout5_sink
+		* vout6
+		* iout6_source
+		* iout6_sink
+		* vout7
+		* iout7_source
+		* iout7_sink
+		* die_temp
+		* agnd
diff --git a/MAINTAINERS b/MAINTAINERS
index ffdb3f21fc4fb35b349449afbb30fecd4fe72978..2d3c31c74594ca1934c67e7aad0a179feeaa39bf 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1289,6 +1289,13 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git
 F:	drivers/net/amt.c
 
+ANALOG DEVICES INC AD3530R DRIVER
+M:	Kim Seer Paller <kimseer.paller@...log.com>
+L:	linux-iio@...r.kernel.org
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/ABI/testing/sysfs-bus-iio-dac-ad3530r
+
 ANALOG DEVICES INC AD3552R DRIVER
 M:	Nuno Sá <nuno.sa@...log.com>
 L:	linux-iio@...r.kernel.org

-- 
2.34.1