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iio: addac: add AD74413R driver

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The AD74412R and AD74413R are quad-channel, software configurable,
input/output solutions for building and process control applications.

They contain functionality for analog output, analog input, digital input,
resistance temperature detector, and thermocouple measurements integrated
into a single chip solution with an SPI interface.

The devices feature a 16-bit ADC and four configurable 13-bit DACs to
provide four configurable input/output channels and a suite of diagnostic
functions.

The AD74413R differentiates itself from the AD74412R by being
HART-compatible.

When configured with channel 0 as voltage output, channel 1 as current
output, channel 2 as voltage input and channel 3 as current input, the
following structure is created under the corresponding IIO device.

.
├── in_current0_offset
├── in_current0_raw
├── in_current0_sampling_frequency
├── in_current0_sampling_frequency_available
├── in_current0_scale
├── in_voltage1_offset
├── in_voltage1_raw
├── in_voltage1_sampling_frequency
├── in_voltage1_sampling_frequency_available
├── in_voltage1_scale
├── in_voltage2_offset
├── in_voltage2_raw
├── in_voltage2_sampling_frequency
├── in_voltage2_sampling_frequency_available
├── in_voltage2_scale
├── in_current3_offset
├── in_current3_raw
├── in_current3_sampling_frequency
├── in_current3_sampling_frequency_available
├── in_current3_scale
├── out_voltage0_raw
├── out_voltage0_scale
├── out_current1_raw
├── out_current1_scale
├── name
├── buffer
│   ├── data_available
│   ├── enable
│   ├── length
│   └── watermark
└── scan_elements
    ├── in_current0_en
    ├── in_current0_index
    ├── in_current0_type
    ├── in_voltage1_en
    ├── in_voltage1_index
    ├── in_voltage1_type
    ├── in_voltage2_en
    ├── in_voltage2_index
    ├── in_voltage2_type
    ├── in_current3_en
    ├── in_current3_index
    └── in_current3_type

Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211205114045.173612-4-cosmin.tanislav@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Cosmin Tanislav 2021-12-05 13:40:45 +02:00 committed by Jonathan Cameron
parent 3cf3cdea6f
commit fea251b6a5
4 changed files with 1497 additions and 0 deletions
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9
MAINTAINERS
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@ -1069,6 +1069,15 @@ W: http://ez.analog.com/community/linux-device-drivers
F: Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml
F: drivers/iio/adc/ad7780.c
ANALOG DEVICES INC AD74413R DRIVER
M: Cosmin Tanislav <cosmin.tanislav@analog.com>
L: linux-iio@vger.kernel.org
S: Supported
W: http://ez.analog.com/community/linux-device-drivers
F: Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
F: drivers/iio/addac/ad74413r.c
F: include/dt-bindings/iio/addac/adi,ad74413r.h
ANALOG DEVICES INC AD9389B DRIVER
M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
L: linux-media@vger.kernel.org

12
drivers/iio/addac/Kconfig
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@ -5,4 +5,16 @@
menu "Analog to digital and digital to analog converters"
config AD74413R
tristate "Analog Devices AD74412R/AD74413R driver"
depends on GPIOLIB && SPI
select REGMAP_SPI
select CRC8
help
Say yes here to build support for Analog Devices AD74412R/AD74413R
quad-channel software configurable input/output solution.
To compile this driver as a module, choose M here: the
module will be called ad74413r.
endmenu

1
drivers/iio/addac/Makefile
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@ -4,3 +4,4 @@
#
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_AD74413R) += ad74413r.o

1475
drivers/iio/addac/ad74413r.c Normal file
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