iio: dac: Add MAX22007 DAC driver support

Add support for the MAX22007 4 channel DAC
that drives a voltage or current output on each channel.

Signed-off-by: Janani Sunil <[email protected]>

Author: jansunil

MAINTAINERS

@@ -1600,6 +1600,7 @@ S:	Supported
 W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/iio/dac/adi,max22007.yaml
 F:	Documentation/iio/max22007.rst
+F:	drivers/iio/dac/max22007.c
 
 ANALOG DEVICES INC ADA4250 DRIVER
 M:	Antoniu Miclaus <[email protected]>

drivers/iio/dac/Kconfig

@@ -482,6 +482,19 @@ config MAX517
 	  This driver can also be built as a module.  If so, the module
 	  will be called max517.
 
+config MAX22007
+	tristate "Analog Devices MAX22007 DAC Driver"
+	depends on SPI
+	select REGMAP_SPI
+	select CRC8
+	help
+	  Say Y here if you want to build a driver for Analog Devices MAX22007.
+
+	  MAX22007 is a quad-channel, 12-bit, voltage-output digital to
+	  analog converter (DAC) with SPI interface.
+
+	  If compiled as a module, it will be called max22007.
+
 config MAX5522
 	tristate "Maxim MAX5522 DAC driver"
 	depends on SPI_MASTER

drivers/iio/dac/Makefile

@@ -48,6 +48,7 @@ obj-$(CONFIG_LTC2664) += ltc2664.o
 obj-$(CONFIG_LTC2688) += ltc2688.o
 obj-$(CONFIG_M62332) += m62332.o
 obj-$(CONFIG_MAX517) += max517.o
+obj-$(CONFIG_MAX22007) += max22007.o
 obj-$(CONFIG_MAX5522) += max5522.o
 obj-$(CONFIG_MAX5821) += max5821.o
 obj-$(CONFIG_MCP4725) += mcp4725.o