staging:iio:adc: Add AD7791 driver

This patch adds support for the Analog Devices AD7787, AD7788, AD7789, AD7790
and AD7791 Sigma Delta Analog-to-Digital converters.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index a2c50713b0b6..d0ae71ec2aa0 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -18,6 +18,18 @@ config AD7266
           Say yes here to build support for Analog Devices AD7265 and AD7266
           ADCs.
 
+config AD7791
+        tristate "Analog Devices AD7791 ADC driver"
+        depends on SPI
+        select AD_SIGMA_DELTA
+        help
+          Say yes here to build support for Analog Devices AD7787, AD7788, AD7789,
+          AD7790 and AD7791 SPI analog to digital converters (ADC). If unsure, say
+          N (but it is safe to say "Y").
+
+          To compile this driver as a module, choose M here: the module will be
+          called ad7791.
+
 config AT91_ADC
         tristate "Atmel AT91 ADC"
         depends on ARCH_AT91