iio: Add driver for AMS/TAOS tcs3414 digital color sensor

16-bit digital color sensor with red, green, blue and clear channel

datasheet: http://ams.com/eng/content/download/250258/975997/TCS3414_Datasheet_EN_v1.pdfSigned-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/light/Kconfig

@@ -128,6 +128,18 @@ config LTR501
 	 This driver can also be built as a module.  If so, the module
          will be called ltr501.
 
+config TCS3414
+	tristate "TAOS TCS3414 digital color sensor"
+	depends on I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	 If you say yes here you get support for the TAOS TCS3414
+	 family of digital color sensors.
+
+	 This driver can also be built as a module.  If so, the module
+	 will be called tcs3414.
+
 config TCS3472
 	tristate "TAOS TCS3472 color light-to-digital converter"
 	depends on I2C

drivers/iio/light/Makefile

@@ -14,6 +14,7 @@ obj-$(CONFIG_ISL29125)		+= isl29125.o
 obj-$(CONFIG_SENSORS_LM3533)	+= lm3533-als.o
 obj-$(CONFIG_LTR501)		+= ltr501.o
 obj-$(CONFIG_SENSORS_TSL2563)	+= tsl2563.o
+obj-$(CONFIG_TCS3414)		+= tcs3414.o
 obj-$(CONFIG_TCS3472)		+= tcs3472.o
 obj-$(CONFIG_TSL4531)		+= tsl4531.o
 obj-$(CONFIG_VCNL4000)		+= vcnl4000.o