add driver for ad5710r/ad5711r

Documentation/ABI/testing/sysfs-bus-iio

@@ -738,6 +738,8 @@ Description:
 
 What:		/sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
 What:		/sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
+What:		/sys/bus/iio/devices/iio:deviceX/out_currentY_powerdown_mode
+What:		/sys/bus/iio/devices/iio:deviceX/out_current_powerdown_mode
 What:		/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
 What:		/sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
 KernelVersion:	2.6.38
@@ -749,6 +751,7 @@ Description:
 		2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
 		6kohm_to_gnd: connected to ground via a 6kOhm resistor,
 		7.7kohm_to_gnd: connected to ground via a 7.7kOhm resistor,
+		15kohm_to_gnd: connected to ground via a 15kOhm resistor,
 		20kohm_to_gnd: connected to ground via a 20kOhm resistor,
 		32kohm_to_gnd: connected to ground via a 32kOhm resistor,
 		42kohm_to_gnd: connected to ground via a 42kOhm resistor,
@@ -757,13 +760,16 @@ Description:
 		125kohm_to_gnd: connected to ground via an 125kOhm resistor,
 		500kohm_to_gnd: connected to ground via a 500kOhm resistor,
 		640kohm_to_gnd: connected to ground via a 640kOhm resistor,
-		three_state: left floating.
+		three_state: left floating,
+		high_z: left floating.
 		For a list of available output power down options read
 		outX_powerdown_mode_available. If Y is not present the
 		mode is shared across all outputs.
 
 What:		/sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
 What:		/sys/.../iio:deviceX/out_voltage_powerdown_mode_available
+What:		/sys/.../iio:deviceX/out_currentY_powerdown_mode_available
+What:		/sys/.../iio:deviceX/out_current_powerdown_mode_available
 What:		/sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
 What:		/sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
 KernelVersion:	2.6.38
@@ -774,6 +780,8 @@ Description:
 
 What:		/sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
 What:		/sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
+What:		/sys/bus/iio/devices/iio:deviceX/out_currentY_powerdown
+What:		/sys/bus/iio/devices/iio:deviceX/out_current_powerdown
 What:		/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
 What:		/sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
 KernelVersion:	2.6.38

Documentation/devicetree/bindings/iio/dac/adi,ad5710r.yaml

@@ -0,0 +1,143 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad5710r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5710R/AD5711R 8-channel 12-/16-bit Configurable IDAC/VDAC
+
+maintainers:
+  - Kim Seer Paller <kimseer.paller@analog.com>
+
+description: |
+  The AD5710R (16-bit) and AD5711R (12-bit) are 8-channel, low-power,
+  configurable current/voltage output digital-to-analog converters (DACs) with
+  an on-chip 2.5V, 3ppm/°C reference. Each channel can be independently
+  configured as a voltage output (0V to VREF or 0V to 2xVREF) or a current
+  output (0mA to 50mA). These devices operate from a single 2.7V to 5.5V
+  supply and are guaranteed monotonic by design.
+  Datasheet can be found here:
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ad5711r-ad5710r.pdf
+
+properties:
+  compatible:
+    enum:
+      - adi,ad5710r
+      - adi,ad5711r
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 20000000
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  vdd-supply:
+    description: Power Supply Input.
+
+  iovdd-supply:
+    description: Digital Power Supply Input.
+
+  io-channels:
+    description:
+      ADC channel used to monitor internal die temperature, output voltages, and
+      current of a selected channel via the MUXOUT pin.
+    maxItems: 1
+
+  ref-supply:
+    description:
+      Reference Input/Output. The voltage at the REF pin sets the full-scale
+      range of all channels. If not provided the internal reference is used and
+      also provided on the VREF pin.
+
+  reset-gpios:
+    description:
+      Active low signal that is falling edge sensitive. When it is deasserted,
+      the digital core initialization is performed and all DAC registers except
+      the Interface Configuration A register are reset to their default values.
+    maxItems: 1
+
+  ldac-gpios:
+    description:
+      LDAC pin to be used as a hardware trigger to update the DAC channels. If
+      not present, the DAC channels are updated by Software LDAC.
+    maxItems: 1
+
+  adi,range-double:
+    description:
+      Configure the output range for all channels. If the property is present,
+      the output will range from 0V to 2Vref. If the property is not present,
+      the output will range from 0V to Vref.
+    type: boolean
+
+patternProperties:
+  "^channel@[0-7]$":
+    $ref: /schemas/iio/dac/dac.yaml#
+    type: object
+    description:
+      Represents the external channels which are connected to the DAC.
+
+    properties:
+      reg:
+        description: Channel number
+        items:
+          minimum: 0
+          maximum: 7
+
+      adi,ch-func:
+        description:
+          Channel output type. Use CH_FUNC_VOLTAGE_OUTPUT for voltage
+          output or CH_FUNC_CURRENT_OUTPUT for current output.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        enum: [1, 2]
+
+    required:
+      - reg
+      - adi,ch-func
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+  - iovdd-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/iio/addac/adi,ad74413r.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        dac@0 {
+            compatible = "adi,ad5710r";
+            reg = <0>;
+            spi-max-frequency = <1000000>;
+            vdd-supply = <&vdd>;
+            iovdd-supply = <&iovdd>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            channel@0 {
+                reg = <0>;
+                adi,ch-func = <CH_FUNC_VOLTAGE_OUTPUT>;
+            };
+
+            channel@1 {
+                reg = <1>;
+                adi,ch-func = <CH_FUNC_CURRENT_OUTPUT>;
+            };
+        };
+    };
+...

MAINTAINERS

@@ -1328,6 +1328,14 @@ F:	Documentation/iio/ad4695.rst
 F:	drivers/iio/adc/ad4695.c
 F:	include/dt-bindings/iio/adc/adc/adi,ad4695.h
 
+ANALOG DEVICES INC AD5710R DRIVER
+M:	Kim Seer Paller <kimseer.paller@analog.com>
+L:	linux-iio@vger.kernel.org
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/dac/adi,ad5710r.yaml
+F:	drivers/iio/dac/ad5710r.c
+
 ANALOG DEVICES INC AD7091R DRIVER
 M:	Marcelo Schmitt <marcelo.schmitt@analog.com>
 L:	linux-iio@vger.kernel.org

drivers/iio/Kconfig.adi

@@ -217,3 +217,4 @@ config IIO_ALL_ADI_DRIVERS
 	imply AD7091R8
 	imply AD9739A
 	imply MAX22007
+	imply AD5710R

drivers/iio/dac/Kconfig

@@ -250,6 +250,17 @@ config AD5696_I2C
 	  To compile this driver as a module, choose M here: the module will be
 	  called ad5696.
 
+config AD5710R
+	tristate "Analog Devices AD5710R/AD5711R DAC driver"
+	depends on SPI
+	select REGMAP_SPI
+	help
+	  Say yes here to build support for Analog Devices AD5710R, AD5711R
+	  Digital to Analog Converter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5710r.
+
 config AD5755
 	tristate "Analog Devices AD5755/AD5755-1/AD5757/AD5735/AD5737 DAC driver"
 	depends on SPI_MASTER

drivers/iio/dac/Makefile

@@ -30,6 +30,7 @@ obj-$(CONFIG_AD5791) += ad5791.o
 obj-$(CONFIG_AD5686) += ad5686.o
 obj-$(CONFIG_AD5686_SPI) += ad5686-spi.o
 obj-$(CONFIG_AD5696_I2C) += ad5696-i2c.o
+obj-$(CONFIG_AD5710R) += ad5710r.o
 obj-$(CONFIG_AD7293) += ad7293.o
 obj-$(CONFIG_AD7303) += ad7303.o
 obj-$(CONFIG_AD8460) += ad8460.o