staging: IIO: DAC: New driver for the AD5504 and AD55041 High Voltage…

… DACs

Changes since V1:

IIO: DAC: Apply review feedback from Jonathan

Fix array size and declare const.
Fix reversed dacY_powerdown read back.
Use individual attribute groups instead of is_visible.
Fix event naming and add the _en file.

Changes since V2:

IIO: DAC: AD5504 use proper event type

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/dac/Kconfig

@@ -21,6 +21,16 @@ config AD5446
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad5446.
 
+config AD5504
+	tristate "Analog Devices AD5504/AD5501 DAC SPI driver"
+	depends on SPI
+	help
+	  Say yes here to build support for Analog Devices AD5504, AD5501,
+	  High Voltage Digital to Analog Converter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5504.
+
 config MAX517
 	tristate "Maxim MAX517/518/519 DAC driver"
 	depends on I2C && EXPERIMENTAL

drivers/staging/iio/dac/Makefile

@@ -3,5 +3,6 @@
 #
 
 obj-$(CONFIG_AD5624R_SPI) += ad5624r_spi.o
+obj-$(CONFIG_AD5504) += ad5504.o
 obj-$(CONFIG_AD5446) += ad5446.o
 obj-$(CONFIG_MAX517) += max517.o